diff --git a/.gitignore b/.gitignore new file mode 100644 index 00000000..5c0b4baf --- /dev/null +++ b/.gitignore @@ -0,0 +1,85 @@ +# +# NOTE! Don't add files that are generated in specific +# subdirectories here. Add them in the ".gitignore" file +# in that subdirectory instead. +# +# NOTE! Please use 'git ls-files -i --exclude-standard' +# command after changing this file, to see if there are +# any tracked files which get ignored after the change. +# +# Normal rules +# +.* +*.o +*.o.* +*.a +*.s +*.ko +*.so +*.so.dbg +*.mod.c +*.i +*.lst +*.symtypes +*.order +modules.builtin +*.elf +*.bin +*.gz +*.bz2 +*.lzma +*.lzo +*.patch +*.gcno + +# +# Top-level generic files +# +tags +TAGS +linux +vmlinux +vmlinuz +System.map +Module.markers +Module.symvers + +# +# git files that we don't want to ignore even it they are dot-files +# +!.gitignore +!.mailmap + +# +# Generated include files +# +include/asm +include/asm-*/asm-offsets.h +include/config +include/linux/autoconf.h +include/linux/compile.h +include/linux/version.h +include/linux/generated +include/linux/bounds.h +include/linux/utsrelease.h + +# stgit generated dirs +patches-* + +# quilt's files +patches +series + +# cscope files +cscope.* +ncscope.* + +# gnu global files +GPATH +GRTAGS +GSYMS +GTAGS + +*.orig +*~ +\#*# diff --git a/arch/arm/configs/incredikernel_defconfig b/arch/arm/configs/incredikernel_defconfig new file mode 100644 index 00000000..3c75915d --- /dev/null +++ b/arch/arm/configs/incredikernel_defconfig @@ -0,0 +1,1953 @@ +# +# Automatically generated make config: don't edit +# Linux kernel version: 2.6.32.27 +# Tue Dec 28 17:45:30 2010 +# +CONFIG_ARM=y +CONFIG_SYS_SUPPORTS_APM_EMULATION=y +CONFIG_GENERIC_GPIO=y +CONFIG_GENERIC_TIME=y +CONFIG_GENERIC_CLOCKEVENTS=y +CONFIG_GENERIC_HARDIRQS=y +CONFIG_STACKTRACE_SUPPORT=y +CONFIG_HAVE_LATENCYTOP_SUPPORT=y +CONFIG_LOCKDEP_SUPPORT=y +CONFIG_TRACE_IRQFLAGS_SUPPORT=y +CONFIG_HARDIRQS_SW_RESEND=y +CONFIG_GENERIC_IRQ_PROBE=y +CONFIG_RWSEM_GENERIC_SPINLOCK=y +CONFIG_ARCH_HAS_CPUFREQ=y +CONFIG_GENERIC_HWEIGHT=y +CONFIG_GENERIC_CALIBRATE_DELAY=y +CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ=y +CONFIG_VECTORS_BASE=0xffff0000 +CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config" +CONFIG_CONSTRUCTORS=y + +# +# General setup +# +CONFIG_EXPERIMENTAL=y +CONFIG_BROKEN_ON_SMP=y +CONFIG_LOCK_KERNEL=y +CONFIG_INIT_ENV_ARG_LIMIT=32 +CONFIG_LOCALVERSION="-incredikernel-12232010" +# CONFIG_LOCALVERSION_AUTO is not set +# CONFIG_SWAP is not set +# CONFIG_SYSVIPC is not set +# CONFIG_POSIX_MQUEUE is not set +# CONFIG_BSD_PROCESS_ACCT is not set +# CONFIG_TASKSTATS is not set +# CONFIG_AUDIT is not set + +# +# RCU Subsystem +# +# CONFIG_TREE_RCU is not set +# CONFIG_TREE_PREEMPT_RCU is not set +CONFIG_TINY_RCU=y +# CONFIG_TREE_RCU_TRACE is not set +CONFIG_IKCONFIG=y +CONFIG_IKCONFIG_PROC=y +CONFIG_LOG_BUF_SHIFT=17 +CONFIG_GROUP_SCHED=y +CONFIG_FAIR_GROUP_SCHED=y +CONFIG_RT_GROUP_SCHED=y +# CONFIG_USER_SCHED is not set +CONFIG_CGROUP_SCHED=y +CONFIG_CGROUPS=y +# CONFIG_CGROUP_DEBUG is not set +# CONFIG_CGROUP_NS is not set +CONFIG_CGROUP_FREEZER=y +# CONFIG_CGROUP_DEVICE is not set +# CONFIG_CPUSETS is not set +# CONFIG_CGROUP_CPUACCT is not set +CONFIG_RESOURCE_COUNTERS=y +# CONFIG_CGROUP_MEM_RES_CTLR is not set +# CONFIG_SYSFS_DEPRECATED_V2 is not set +# CONFIG_RELAY is not set +# CONFIG_NAMESPACES is not set +CONFIG_BLK_DEV_INITRD=y +CONFIG_INITRAMFS_SOURCE="" +CONFIG_RD_GZIP=y +# CONFIG_RD_BZIP2 is not set +CONFIG_RD_LZMA=y +CONFIG_CC_OPTIMIZE_FOR_SIZE=y +CONFIG_SYSCTL=y +CONFIG_ANON_INODES=y +CONFIG_PANIC_TIMEOUT=5 +CONFIG_EMBEDDED=y +CONFIG_UID16=y +# CONFIG_SYSCTL_SYSCALL is not set +# CONFIG_KALLSYMS is not set +CONFIG_HOTPLUG=y +CONFIG_PRINTK=y +CONFIG_BUG=y +# CONFIG_ELF_CORE is not set +CONFIG_BASE_FULL=y +CONFIG_FUTEX=y +CONFIG_EPOLL=y +CONFIG_SIGNALFD=y +CONFIG_TIMERFD=y +CONFIG_EVENTFD=y +CONFIG_SHMEM=y +CONFIG_ASHMEM=y +CONFIG_AIO=y + +# +# Kernel Performance Events And Counters +# +CONFIG_VM_EVENT_COUNTERS=y +CONFIG_SLUB_DEBUG=y +CONFIG_COMPAT_BRK=y +# CONFIG_SLAB is not set +CONFIG_SLUB=y +# CONFIG_SLOB is not set +# CONFIG_PROFILING is not set +CONFIG_HAVE_OPROFILE=y +CONFIG_HAVE_KPROBES=y +CONFIG_HAVE_KRETPROBES=y + +# +# GCOV-based kernel profiling +# +CONFIG_SLOW_WORK=y +CONFIG_HAVE_GENERIC_DMA_COHERENT=y +CONFIG_SLABINFO=y +CONFIG_RT_MUTEXES=y +CONFIG_BASE_SMALL=0 +CONFIG_MODULES=y +# CONFIG_MODULE_FORCE_LOAD is not set +CONFIG_MODULE_UNLOAD=y +CONFIG_MODULE_FORCE_UNLOAD=y +# CONFIG_MODVERSIONS is not set +# CONFIG_MODULE_SRCVERSION_ALL is not set +CONFIG_BLOCK=y +CONFIG_LBDAF=y +# CONFIG_BLK_DEV_BSG is not set +# CONFIG_BLK_DEV_INTEGRITY is not set + +# +# IO Schedulers +# +CONFIG_IOSCHED_NOOP=y +# CONFIG_IOSCHED_AS is not set +# CONFIG_IOSCHED_DEADLINE is not set +# CONFIG_IOSCHED_CFQ is not set +CONFIG_IOSCHED_BFQ=y +# CONFIG_CGROUP_BFQIO is not set +# CONFIG_DEFAULT_AS is not set +# CONFIG_DEFAULT_DEADLINE is not set +# CONFIG_DEFAULT_CFQ is not set +CONFIG_DEFAULT_BFQ=y +# CONFIG_DEFAULT_NOOP is not set +CONFIG_DEFAULT_IOSCHED="bfq" +CONFIG_FREEZER=y + +# +# System Type +# +CONFIG_MMU=y +# CONFIG_ARCH_AAEC2000 is not set +# CONFIG_ARCH_INTEGRATOR is not set +# CONFIG_ARCH_REALVIEW is not set +# CONFIG_ARCH_VERSATILE is not set +# CONFIG_ARCH_AT91 is not set +# CONFIG_ARCH_CLPS711X is not set +# CONFIG_ARCH_GEMINI is not set +# CONFIG_ARCH_EBSA110 is not set +# CONFIG_ARCH_EP93XX is not set +# CONFIG_ARCH_FOOTBRIDGE is not set +# CONFIG_ARCH_MXC is not set +# CONFIG_ARCH_STMP3XXX is not set +# CONFIG_ARCH_NETX is not set +# CONFIG_ARCH_H720X is not set +# CONFIG_ARCH_NOMADIK is not set +# CONFIG_ARCH_IOP13XX is not set +# CONFIG_ARCH_IOP32X is not set +# CONFIG_ARCH_IOP33X is not set +# CONFIG_ARCH_IXP23XX is not set +# CONFIG_ARCH_IXP2000 is not set +# CONFIG_ARCH_IXP4XX is not set +# CONFIG_ARCH_L7200 is not set +# CONFIG_ARCH_KIRKWOOD is not set +# CONFIG_ARCH_LOKI is not set +# CONFIG_ARCH_MV78XX0 is not set +# CONFIG_ARCH_ORION5X is not set +# CONFIG_ARCH_MMP is not set +# CONFIG_ARCH_KS8695 is not set +# CONFIG_ARCH_NS9XXX is not set +# CONFIG_ARCH_W90X900 is not set +# CONFIG_ARCH_PNX4008 is not set +# CONFIG_ARCH_PXA is not set +CONFIG_ARCH_MSM=y +# CONFIG_ARCH_RPC is not set +# CONFIG_ARCH_SA1100 is not set +# CONFIG_ARCH_S3C2410 is not set +# CONFIG_ARCH_S3C64XX is not set +# CONFIG_ARCH_S5PC1XX is not set +# CONFIG_ARCH_SHARK is not set +# CONFIG_ARCH_LH7A40X is not set +# CONFIG_ARCH_U300 is not set +# CONFIG_ARCH_DAVINCI is not set +# CONFIG_ARCH_OMAP is not set +# CONFIG_ARCH_BCMRING is not set +# CONFIG_ARCH_MSM7X00A is not set +# CONFIG_ARCH_MSM7225 is not set +# CONFIG_ARCH_MSM7227 is not set +# CONFIG_ARCH_MSM7X30 is not set +CONFIG_ARCH_QSD8X50=y +CONFIG_ARCH_MSM_SCORPION=y +CONFIG_MSM_MDP31=y +# CONFIG_PERFLOCK is not set +CONFIG_MSM_AMSS_VERSION=3200 +# CONFIG_MSM_AMSS_VERSION_6210 is not set +# CONFIG_MSM_AMSS_VERSION_6220 is not set +# CONFIG_MSM_AMSS_VERSION_6225 is not set +# CONFIG_MSM_AMSS_VERSION_6350 is not set +# CONFIG_MSM_AMSS_VERSION_6355 is not set +# CONFIG_MSM_AMSS_VERSION_1355 is not set +# CONFIG_MSM_AMSS_VERSION_4725 is not set +# CONFIG_MSM_AMSS_VERSION_4735 is not set +# CONFIG_MSM_AMSS_VERSION_4410 is not set +CONFIG_MSM_AMSS_VERSION_3200=y +# CONFIG_MSM_AMSS_VERSION_1170 is not set +# CONFIG_MSM_AMSS_VERSION_1200 is not set +CONFIG_MSM_DEBUG_UART=1 +# CONFIG_MSM_DEBUG_UART_NONE is not set +CONFIG_MSM_DEBUG_UART1=y +# CONFIG_MSM_DEBUG_UART2 is not set +# CONFIG_MSM_DEBUG_UART3 is not set + +# +# MSM Board Type +# +# CONFIG_MACH_SWORDFISH is not set +# CONFIG_MACH_ORCA is not set +# CONFIG_MACH_MAHIMAHI is not set +# CONFIG_MACH_BRAVO is not set +# CONFIG_MACH_PASSIONC is not set +# CONFIG_MACH_BRAVOC is not set +# CONFIG_MACH_INCREDIBLE is not set +CONFIG_MACH_INCREDIBLEC=y +# CONFIG_MACH_SUPERSONIC is not set +CONFIG_HTC_BATTCHG=y +CONFIG_HTC_BATTCHG_SMEM=y +# CONFIG_HTC_PWRSINK is not set +CONFIG_HTC_SLEEP_MODE_GPIO_DUMP=y +# CONFIG_HTC_POWER_COLLAPSE_MAGIC is not set +# CONFIG_SMEM_RPC_SERVER_STATE is not set +CONFIG_BUILD_OMA_DM=y +CONFIG_QSD_SVS=y +CONFIG_QSD_PMIC_DEFAULT_DCDC1=1275 +CONFIG_CACHE_FLUSH_RANGE_LIMIT=0x40000 +CONFIG_MSM7X00A_USE_GP_TIMER=y +# CONFIG_MSM7X00A_USE_DG_TIMER is not set +CONFIG_MSM7X00A_SLEEP_MODE_POWER_COLLAPSE_SUSPEND=y +# CONFIG_MSM7X00A_SLEEP_MODE_POWER_COLLAPSE is not set +# CONFIG_MSM7X00A_SLEEP_MODE_APPS_SLEEP is not set +# CONFIG_MSM7X00A_SLEEP_MODE_RAMP_DOWN_AND_WAIT_FOR_INTERRUPT is not set +# CONFIG_MSM7X00A_SLEEP_WAIT_FOR_INTERRUPT is not set +CONFIG_MSM7X00A_SLEEP_MODE=0 +# CONFIG_MSM7X00A_IDLE_SLEEP_MODE_POWER_COLLAPSE_SUSPEND is not set +# CONFIG_MSM7X00A_IDLE_SLEEP_MODE_POWER_COLLAPSE is not set +CONFIG_MSM7X00A_IDLE_SLEEP_MODE_APPS_SLEEP=y +# CONFIG_MSM7X00A_IDLE_SLEEP_MODE_RAMP_DOWN_AND_WAIT_FOR_INTERRUPT is not set +# CONFIG_MSM7X00A_IDLE_SLEEP_WAIT_FOR_INTERRUPT is not set +CONFIG_MSM7X00A_IDLE_SLEEP_MODE=2 +CONFIG_MSM7X00A_IDLE_SLEEP_MIN_TIME=20000000 +CONFIG_MSM7X00A_IDLE_SPIN_TIME=80000 +CONFIG_MSM7X00A_SLEEP_NO_LIMIT=y +# CONFIG_MSM7X00A_SLEEP_LIMITED_SLEEP is not set +# CONFIG_MSM7X00A_SLEEP_NEGATE_SLEEP is not set +CONFIG_MSM7X00A_SLEEP_LIMIT=0 +# CONFIG_MSM7X00A_IDLE_SLEEP_NO_LIMIT is not set +# CONFIG_MSM7X00A_IDLE_SLEEP_LIMITED_SLEEP is not set +CONFIG_MSM7X00A_IDLE_SLEEP_NEGATE_SLEEP=y +CONFIG_MSM7X00A_IDLE_SLEEP_LIMIT=2 +CONFIG_MSM_IDLE_STATS=y +CONFIG_MSM_IDLE_STATS_FIRST_BUCKET=62500 +CONFIG_MSM_IDLE_STATS_BUCKET_SHIFT=2 +CONFIG_MSM_IDLE_STATS_BUCKET_COUNT=10 +CONFIG_MSM_FIQ_SUPPORT=y +CONFIG_MSM_SERIAL_DEBUGGER=y +CONFIG_MSM_SERIAL_DEBUGGER_NO_SLEEP=y +# CONFIG_MSM_SERIAL_DEBUGGER_WAKEUP_IRQ_ALWAYS_ON is not set +# CONFIG_MSM_SERIAL_DEBUGGER_CONSOLE is not set +CONFIG_MSM_SMD=y +CONFIG_MSM_N_WAY_SMD=y +CONFIG_MSM_ONCRPCROUTER=y +CONFIG_MSM_RPCSERVERS=y +# CONFIG_MSM_RMT_STORAGE_SERVER is not set +CONFIG_MSM_DALRPC=y +# CONFIG_MSM_CPU_FREQ_SCREEN is not set +CONFIG_MSM_CPU_FREQ_ONDEMAND_MAX=1113600 +CONFIG_MSM_CPU_FREQ_ONDEMAND_MIN=245000 +CONFIG_MSM_CPU_AVS=y +# CONFIG_MSM_HW3D is not set +# CONFIG_HTC_ACOUSTIC is not set +CONFIG_HTC_ACOUSTIC_QSD=y +# CONFIG_MSM_QDSP6 is not set +CONFIG_WIFI_CONTROL_FUNC=y +# CONFIG_WIFI_MEM_PREALLOC is not set +CONFIG_WIFI_NVS_PROC_CREATE=y +# CONFIG_MMC_SUPPORT_EXTERNEL_DRIVER is not set +CONFIG_MMC_BUSCLK_PWRSAVE=y +# CONFIG_VIRTUAL_KPANIC_PARTITION is not set +CONFIG_QSD_AUDIO=y +CONFIG_QSD_HTC_FM=y +CONFIG_ARCH_MSM_FLASHLIGHT=y +CONFIG_MICROP_COMMON=y +CONFIG_HTC_HEADSET_MGR=y +# CONFIG_HTC_HEADSET_H2W is not set +CONFIG_HTC_HEADSET_GPIO=y +CONFIG_HTC_HEADSET_MICROP=y +# CONFIG_HTC_HEADSET_PMIC is not set +# CONFIG_BUILD_CIQ is not set +CONFIG_SMD_OFFSET_TCXO_STAT=0xFC2A0 +# CONFIG_AXI_SCREEN_POLICY is not set +# CONFIG_MSM_NPA is not set + +# +# Processor Type +# +CONFIG_CPU_32=y +CONFIG_CPU_32v6K=y +CONFIG_CPU_V7=y +CONFIG_CPU_32v7=y +CONFIG_CPU_ABRT_EV7=y +CONFIG_CPU_PABRT_V7=y +CONFIG_CPU_CACHE_V7=y +CONFIG_CPU_CACHE_VIPT=y +CONFIG_CPU_COPY_V6=y +CONFIG_CPU_TLB_V7=y +CONFIG_VERIFY_PERMISSION_FAULT=y +CONFIG_CPU_HAS_ASID=y +CONFIG_CPU_CP15=y +CONFIG_CPU_CP15_MMU=y + +# +# Processor Features +# +CONFIG_ARM_THUMB=y +CONFIG_ARM_THUMBEE=y +# CONFIG_CPU_ICACHE_DISABLE is not set +# CONFIG_CPU_DCACHE_DISABLE is not set +# CONFIG_CPU_BPREDICT_DISABLE is not set +CONFIG_HAS_TLS_REG=y +CONFIG_ARM_L1_CACHE_SHIFT=5 +# CONFIG_ARM_ERRATA_430973 is not set +# CONFIG_ARM_ERRATA_458693 is not set +# CONFIG_ARM_ERRATA_460075 is not set + +# +# Bus support +# +# CONFIG_PCI_SYSCALL is not set +# CONFIG_ARCH_SUPPORTS_MSI is not set +# CONFIG_PCCARD is not set + +# +# Kernel Features +# +CONFIG_TICK_ONESHOT=y +CONFIG_NO_HZ=y +CONFIG_HIGH_RES_TIMERS=y +CONFIG_GENERIC_CLOCKEVENTS_BUILD=y +CONFIG_VMSPLIT_3G=y +# CONFIG_VMSPLIT_2G is not set +# CONFIG_VMSPLIT_1G is not set +CONFIG_PAGE_OFFSET=0xC0000000 +# CONFIG_PREEMPT_NONE is not set +# CONFIG_PREEMPT_VOLUNTARY is not set +CONFIG_PREEMPT=y +CONFIG_HZ=100 +# CONFIG_THUMB2_KERNEL is not set +CONFIG_AEABI=y +# CONFIG_OABI_COMPAT is not set +# CONFIG_ARCH_SPARSEMEM_DEFAULT is not set +# CONFIG_ARCH_SELECT_MEMORY_MODEL is not set +CONFIG_HIGHMEM=y +# CONFIG_HIGHPTE is not set +CONFIG_VMALLOC_RESERVE=0x30000000 +CONFIG_SELECT_MEMORY_MODEL=y +CONFIG_FLATMEM_MANUAL=y +# CONFIG_DISCONTIGMEM_MANUAL is not set +# CONFIG_SPARSEMEM_MANUAL is not set +CONFIG_FLATMEM=y +CONFIG_FLAT_NODE_MEM_MAP=y +CONFIG_PAGEFLAGS_EXTENDED=y +CONFIG_SPLIT_PTLOCK_CPUS=4 +# CONFIG_PHYS_ADDR_T_64BIT is not set +CONFIG_ZONE_DMA_FLAG=0 +CONFIG_BOUNCE=y +CONFIG_VIRT_TO_BUS=y +CONFIG_HAVE_MLOCK=y +CONFIG_HAVE_MLOCKED_PAGE_BIT=y +# CONFIG_KSM is not set +CONFIG_DEFAULT_MMAP_MIN_ADDR=4096 +CONFIG_ALIGNMENT_TRAP=y +# CONFIG_UACCESS_WITH_MEMCPY is not set + +# +# Boot options +# +CONFIG_ZBOOT_ROM_TEXT=0x0 +CONFIG_ZBOOT_ROM_BSS=0x0 +CONFIG_CMDLINE="mem=64M console=ttyMSM,115200n8" +# CONFIG_XIP_KERNEL is not set +# CONFIG_KEXEC is not set + +# +# CPU Power Management +# +CONFIG_CPU_FREQ=y +CONFIG_CPU_FREQ_TABLE=y +# CONFIG_CPU_FREQ_DEBUG is not set +CONFIG_CPU_FREQ_STAT=y +CONFIG_CPU_FREQ_STAT_DETAILS=y +# CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is not set +# CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set +# CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set +# CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set +# CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set +# CONFIG_CPU_FREQ_DEFAULT_GOV_MINMAX is not set +CONFIG_CPU_FREQ_DEFAULT_GOV_SMARTASS=y +# CONFIG_CPU_FREQ_DEFAULT_GOV_INTERACTIVE is not set +CONFIG_CPU_FREQ_GOV_PERFORMANCE=y +CONFIG_CPU_FREQ_GOV_POWERSAVE=y +CONFIG_CPU_FREQ_GOV_USERSPACE=y +CONFIG_CPU_FREQ_GOV_ONDEMAND=y +CONFIG_CPU_FREQ_GOV_INTERACTIVE=y +CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y +# CONFIG_CPU_FREQ_GOV_MINMAX is not set +CONFIG_CPU_FREQ_GOV_SMARTASS=y +CONFIG_CPU_FREQ_MIN_TICKS=10 +CONFIG_CPU_FREQ_SAMPLING_LATENCY_MULTIPLIER=1000 +# CONFIG_CPU_IDLE is not set + +# +# Floating point emulation +# + +# +# At least one emulation must be selected +# +CONFIG_VFP=y +CONFIG_VFPv3=y +CONFIG_NEON=y + +# +# Userspace binary formats +# +CONFIG_BINFMT_ELF=y +CONFIG_HAVE_AOUT=y +# CONFIG_BINFMT_AOUT is not set +# CONFIG_BINFMT_MISC is not set + +# +# Power management options +# +CONFIG_PM=y +# CONFIG_PM_DEBUG is not set +CONFIG_PM_TRACE=y +CONFIG_PM_SLEEP=y +CONFIG_SUSPEND=y +CONFIG_SUSPEND_FREEZER=y +CONFIG_HAS_WAKELOCK=y +CONFIG_HAS_EARLYSUSPEND=y +CONFIG_WAKELOCK=y +CONFIG_WAKELOCK_STAT=y +CONFIG_USER_WAKELOCK=y +CONFIG_EARLYSUSPEND=y +# CONFIG_NO_USER_SPACE_SCREEN_ACCESS_CONTROL is not set +# CONFIG_CONSOLE_EARLYSUSPEND is not set +CONFIG_FB_EARLYSUSPEND=y +# CONFIG_APM_EMULATION is not set +# CONFIG_PM_RUNTIME is not set +CONFIG_ARCH_SUSPEND_POSSIBLE=y +CONFIG_NET=y + +# +# Networking options +# +CONFIG_PACKET=y +# CONFIG_PACKET_MMAP is not set +CONFIG_UNIX=y +CONFIG_XFRM=y +# CONFIG_XFRM_USER is not set +# CONFIG_XFRM_SUB_POLICY is not set +# CONFIG_XFRM_MIGRATE is not set +# CONFIG_XFRM_STATISTICS is not set +CONFIG_XFRM_IPCOMP=y +CONFIG_NET_KEY=y +# CONFIG_NET_KEY_MIGRATE is not set +CONFIG_INET=y +# CONFIG_IP_MULTICAST is not set +# CONFIG_IP_ADVANCED_ROUTER is not set +CONFIG_IP_FIB_HASH=y +# CONFIG_IP_PNP is not set +# CONFIG_NET_IPIP is not set +# CONFIG_NET_IPGRE is not set +# CONFIG_ARPD is not set +# CONFIG_SYN_COOKIES is not set +# CONFIG_INET_AH is not set +CONFIG_INET_ESP=y +# CONFIG_INET_IPCOMP is not set +# CONFIG_INET_XFRM_TUNNEL is not set +CONFIG_INET_TUNNEL=y +CONFIG_INET_XFRM_MODE_TRANSPORT=y +# CONFIG_INET_XFRM_MODE_TUNNEL is not set +# CONFIG_INET_XFRM_MODE_BEET is not set +# CONFIG_INET_LRO is not set +CONFIG_INET_DIAG=y +CONFIG_INET_TCP_DIAG=y +# CONFIG_TCP_CONG_ADVANCED is not set +CONFIG_TCP_CONG_CUBIC=y +CONFIG_DEFAULT_TCP_CONG="cubic" +# CONFIG_TCP_MD5SIG is not set +CONFIG_IPV6=y +CONFIG_IPV6_PRIVACY=y +CONFIG_IPV6_ROUTER_PREF=y +# CONFIG_IPV6_ROUTE_INFO is not set +CONFIG_IPV6_OPTIMISTIC_DAD=y +CONFIG_INET6_AH=y +CONFIG_INET6_ESP=y +CONFIG_INET6_IPCOMP=y +CONFIG_IPV6_MIP6=y +CONFIG_INET6_XFRM_TUNNEL=y +CONFIG_INET6_TUNNEL=y +CONFIG_INET6_XFRM_MODE_TRANSPORT=y +CONFIG_INET6_XFRM_MODE_TUNNEL=y +CONFIG_INET6_XFRM_MODE_BEET=y +# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set +CONFIG_IPV6_SIT=y +CONFIG_IPV6_NDISC_NODETYPE=y +CONFIG_IPV6_TUNNEL=y +CONFIG_IPV6_MULTIPLE_TABLES=y +# CONFIG_IPV6_SUBTREES is not set +# CONFIG_IPV6_MROUTE is not set +CONFIG_ANDROID_PARANOID_NETWORK=y +# CONFIG_NETWORK_SECMARK is not set +CONFIG_NETFILTER=y +# CONFIG_NETFILTER_DEBUG is not set +CONFIG_NETFILTER_ADVANCED=y + +# +# Core Netfilter Configuration +# +CONFIG_NETFILTER_NETLINK=y +CONFIG_NETFILTER_NETLINK_QUEUE=y +CONFIG_NETFILTER_NETLINK_LOG=y +CONFIG_NF_CONNTRACK=y +CONFIG_NF_CT_ACCT=y +CONFIG_NF_CONNTRACK_MARK=y +CONFIG_NF_CONNTRACK_EVENTS=y +CONFIG_NF_CT_PROTO_DCCP=y +CONFIG_NF_CT_PROTO_GRE=y +CONFIG_NF_CT_PROTO_SCTP=y +CONFIG_NF_CT_PROTO_UDPLITE=y +CONFIG_NF_CONNTRACK_AMANDA=y +CONFIG_NF_CONNTRACK_FTP=y +CONFIG_NF_CONNTRACK_H323=y +CONFIG_NF_CONNTRACK_IRC=y +CONFIG_NF_CONNTRACK_NETBIOS_NS=y +CONFIG_NF_CONNTRACK_PPTP=y +CONFIG_NF_CONNTRACK_SANE=y +CONFIG_NF_CONNTRACK_SIP=y +CONFIG_NF_CONNTRACK_TFTP=y +CONFIG_NF_CT_NETLINK=y +CONFIG_NETFILTER_XTABLES=y +CONFIG_NETFILTER_XT_TARGET_CLASSIFY=y +CONFIG_NETFILTER_XT_TARGET_CONNMARK=y +CONFIG_NETFILTER_XT_TARGET_LED=y +CONFIG_NETFILTER_XT_TARGET_MARK=y +CONFIG_NETFILTER_XT_TARGET_NFLOG=y +CONFIG_NETFILTER_XT_TARGET_NFQUEUE=y +CONFIG_NETFILTER_XT_TARGET_NOTRACK=y +# CONFIG_NETFILTER_XT_TARGET_RATEEST is not set +CONFIG_NETFILTER_XT_TARGET_TRACE=y +CONFIG_NETFILTER_XT_TARGET_TCPMSS=y +# CONFIG_NETFILTER_XT_MATCH_CLUSTER is not set +CONFIG_NETFILTER_XT_MATCH_COMMENT=y +CONFIG_NETFILTER_XT_MATCH_CONNBYTES=y +CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=y +CONFIG_NETFILTER_XT_MATCH_CONNMARK=y +CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y +CONFIG_NETFILTER_XT_MATCH_DCCP=y +CONFIG_NETFILTER_XT_MATCH_DSCP=y +CONFIG_NETFILTER_XT_MATCH_ESP=y +CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=y +CONFIG_NETFILTER_XT_MATCH_HELPER=y +CONFIG_NETFILTER_XT_MATCH_HL=y +CONFIG_NETFILTER_XT_MATCH_IPRANGE=y +CONFIG_NETFILTER_XT_MATCH_LENGTH=y +CONFIG_NETFILTER_XT_MATCH_LIMIT=y +CONFIG_NETFILTER_XT_MATCH_MAC=y +CONFIG_NETFILTER_XT_MATCH_MARK=y +CONFIG_NETFILTER_XT_MATCH_MULTIPORT=y +CONFIG_NETFILTER_XT_MATCH_OWNER=y +CONFIG_NETFILTER_XT_MATCH_POLICY=y +CONFIG_NETFILTER_XT_MATCH_PKTTYPE=y +CONFIG_NETFILTER_XT_MATCH_QUOTA=y +# CONFIG_NETFILTER_XT_MATCH_RATEEST is not set +CONFIG_NETFILTER_XT_MATCH_REALM=y +# CONFIG_NETFILTER_XT_MATCH_RECENT is not set +CONFIG_NETFILTER_XT_MATCH_SCTP=y +CONFIG_NETFILTER_XT_MATCH_STATE=y +CONFIG_NETFILTER_XT_MATCH_STATISTIC=y +CONFIG_NETFILTER_XT_MATCH_STRING=y +CONFIG_NETFILTER_XT_MATCH_TCPMSS=y +CONFIG_NETFILTER_XT_MATCH_TIME=y +CONFIG_NETFILTER_XT_MATCH_U32=y +# CONFIG_NETFILTER_XT_MATCH_OSF is not set +# CONFIG_IP_VS is not set + +# +# IP: Netfilter Configuration +# +CONFIG_NF_DEFRAG_IPV4=y +CONFIG_NF_CONNTRACK_IPV4=y +CONFIG_NF_CONNTRACK_PROC_COMPAT=y +# CONFIG_IP_NF_QUEUE is not set +CONFIG_IP_NF_IPTABLES=y +CONFIG_IP_NF_MATCH_ADDRTYPE=y +CONFIG_IP_NF_MATCH_AH=y +CONFIG_IP_NF_MATCH_ECN=y +CONFIG_IP_NF_MATCH_TTL=y +CONFIG_IP_NF_FILTER=y +CONFIG_IP_NF_TARGET_REJECT=y +CONFIG_IP_NF_TARGET_LOG=y +# CONFIG_IP_NF_TARGET_ULOG is not set +CONFIG_NF_NAT=y +CONFIG_NF_NAT_NEEDED=y +CONFIG_IP_NF_TARGET_MASQUERADE=y +CONFIG_IP_NF_TARGET_NETMAP=y +CONFIG_IP_NF_TARGET_REDIRECT=y +# CONFIG_NF_NAT_SNMP_BASIC is not set +CONFIG_NF_NAT_PROTO_DCCP=y +CONFIG_NF_NAT_PROTO_GRE=y +CONFIG_NF_NAT_PROTO_UDPLITE=y +CONFIG_NF_NAT_PROTO_SCTP=y +CONFIG_NF_NAT_FTP=y +CONFIG_NF_NAT_IRC=y +CONFIG_NF_NAT_TFTP=y +CONFIG_NF_NAT_AMANDA=y +CONFIG_NF_NAT_PPTP=y +CONFIG_NF_NAT_H323=y +CONFIG_NF_NAT_SIP=y +# CONFIG_IP_NF_MANGLE is not set +# CONFIG_IP_NF_TARGET_TTL is not set +CONFIG_IP_NF_RAW=y +CONFIG_IP_NF_ARPTABLES=y +CONFIG_IP_NF_ARPFILTER=y +CONFIG_IP_NF_ARP_MANGLE=y + +# +# IPv6: Netfilter Configuration +# +# CONFIG_NF_CONNTRACK_IPV6 is not set +# CONFIG_IP6_NF_QUEUE is not set +# CONFIG_IP6_NF_IPTABLES is not set +# CONFIG_IP_DCCP is not set +# CONFIG_IP_SCTP is not set +# CONFIG_RDS is not set +# CONFIG_TIPC is not set +# CONFIG_ATM is not set +# CONFIG_BRIDGE is not set +# CONFIG_NET_DSA is not set +# CONFIG_VLAN_8021Q is not set +# CONFIG_DECNET is not set +# CONFIG_LLC2 is not set +# CONFIG_IPX is not set +# CONFIG_ATALK is not set +# CONFIG_X25 is not set +# CONFIG_LAPB is not set +# CONFIG_ECONET is not set +# CONFIG_WAN_ROUTER is not set +# CONFIG_PHONET is not set +# CONFIG_IEEE802154 is not set +CONFIG_NET_SCHED=y + +# +# Queueing/Scheduling +# +# CONFIG_NET_SCH_CBQ is not set +CONFIG_NET_SCH_HTB=y +# CONFIG_NET_SCH_HFSC is not set +# CONFIG_NET_SCH_PRIO is not set +# CONFIG_NET_SCH_MULTIQ is not set +# CONFIG_NET_SCH_RED is not set +# CONFIG_NET_SCH_SFQ is not set +# CONFIG_NET_SCH_TEQL is not set +# CONFIG_NET_SCH_TBF is not set +# CONFIG_NET_SCH_GRED is not set +# CONFIG_NET_SCH_DSMARK is not set +# CONFIG_NET_SCH_NETEM is not set +# CONFIG_NET_SCH_DRR is not set +CONFIG_NET_SCH_INGRESS=y + +# +# Classification +# +CONFIG_NET_CLS=y +# CONFIG_NET_CLS_BASIC is not set +# CONFIG_NET_CLS_TCINDEX is not set +# CONFIG_NET_CLS_ROUTE4 is not set +CONFIG_NET_CLS_ROUTE=y +# CONFIG_NET_CLS_FW is not set +CONFIG_NET_CLS_U32=y +# CONFIG_CLS_U32_PERF is not set +# CONFIG_CLS_U32_MARK is not set +# CONFIG_NET_CLS_RSVP is not set +# CONFIG_NET_CLS_RSVP6 is not set +# CONFIG_NET_CLS_FLOW is not set +# CONFIG_NET_CLS_CGROUP is not set +CONFIG_NET_EMATCH=y +CONFIG_NET_EMATCH_STACK=32 +# CONFIG_NET_EMATCH_CMP is not set +# CONFIG_NET_EMATCH_NBYTE is not set +CONFIG_NET_EMATCH_U32=y +# CONFIG_NET_EMATCH_META is not set +# CONFIG_NET_EMATCH_TEXT is not set +CONFIG_NET_CLS_ACT=y +CONFIG_NET_ACT_POLICE=y +CONFIG_NET_ACT_GACT=y +# CONFIG_GACT_PROB is not set +CONFIG_NET_ACT_MIRRED=y +# CONFIG_NET_ACT_IPT is not set +# CONFIG_NET_ACT_NAT is not set +# CONFIG_NET_ACT_PEDIT is not set +# CONFIG_NET_ACT_SIMP is not set +# CONFIG_NET_ACT_SKBEDIT is not set +# CONFIG_NET_CLS_IND is not set +CONFIG_NET_SCH_FIFO=y +# CONFIG_DCB is not set + +# +# Network testing +# +# CONFIG_NET_PKTGEN is not set +# CONFIG_HAMRADIO is not set +# CONFIG_CAN is not set +# CONFIG_IRDA is not set +CONFIG_BT=y +CONFIG_BT_L2CAP=y +CONFIG_BT_SCO=y +CONFIG_BT_RFCOMM=y +CONFIG_BT_RFCOMM_TTY=y +CONFIG_BT_BNEP=y +# CONFIG_BT_BNEP_MC_FILTER is not set +# CONFIG_BT_BNEP_PROTO_FILTER is not set +CONFIG_BT_HIDP=y + +# +# Bluetooth device drivers +# +# CONFIG_BT_HCIBTSDIO is not set +CONFIG_BT_HCIUART=y +CONFIG_BT_HCIUART_H4=y +# CONFIG_BT_HCIUART_BCSP is not set +CONFIG_BT_HCIUART_LL=y +# CONFIG_BT_HCIVHCI is not set +# CONFIG_BT_MRVL is not set +# CONFIG_AF_RXRPC is not set +CONFIG_FIB_RULES=y +CONFIG_WIRELESS=y +# CONFIG_CFG80211 is not set +CONFIG_CFG80211_DEFAULT_PS_VALUE=0 +CONFIG_WIRELESS_OLD_REGULATORY=y +CONFIG_WIRELESS_EXT=y +CONFIG_WIRELESS_EXT_SYSFS=y +# CONFIG_LIB80211 is not set + +# +# CFG80211 needs to be enabled for MAC80211 +# +# CONFIG_WIMAX is not set +CONFIG_RFKILL=y +# CONFIG_RFKILL_PM is not set +CONFIG_RFKILL_LEDS=y +# CONFIG_RFKILL_INPUT is not set +# CONFIG_NET_9P is not set + +# +# Device Drivers +# + +# +# Generic Driver Options +# +CONFIG_UEVENT_HELPER_PATH="" +# CONFIG_DEVTMPFS is not set +CONFIG_STANDALONE=y +CONFIG_PREVENT_FIRMWARE_BUILD=y +CONFIG_FW_LOADER=y +# CONFIG_FIRMWARE_IN_KERNEL is not set +CONFIG_EXTRA_FIRMWARE="" +# CONFIG_SYS_HYPERVISOR is not set +# CONFIG_CONNECTOR is not set +CONFIG_MTD=y +# CONFIG_MTD_DEBUG is not set +# CONFIG_MTD_TESTS is not set +# CONFIG_MTD_CONCAT is not set +CONFIG_MTD_PARTITIONS=y +# CONFIG_MTD_REDBOOT_PARTS is not set +CONFIG_MTD_CMDLINE_PARTS=y +# CONFIG_MTD_AFS_PARTS is not set +# CONFIG_MTD_AR7_PARTS is not set + +# +# User Modules And Translation Layers +# +CONFIG_MTD_CHAR=y +CONFIG_MTD_BLKDEVS=y +CONFIG_MTD_BLOCK=y +# CONFIG_FTL is not set +# CONFIG_NFTL is not set +# CONFIG_INFTL is not set +# CONFIG_RFD_FTL is not set +# CONFIG_SSFDC is not set +# CONFIG_MTD_OOPS is not set + +# +# RAM/ROM/Flash chip drivers +# +# CONFIG_MTD_CFI is not set +# CONFIG_MTD_JEDECPROBE is not set +CONFIG_MTD_MAP_BANK_WIDTH_1=y +CONFIG_MTD_MAP_BANK_WIDTH_2=y +CONFIG_MTD_MAP_BANK_WIDTH_4=y +# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set +# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set +# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set +CONFIG_MTD_CFI_I1=y +CONFIG_MTD_CFI_I2=y +# CONFIG_MTD_CFI_I4 is not set +# CONFIG_MTD_CFI_I8 is not set +# CONFIG_MTD_RAM is not set +# CONFIG_MTD_ROM is not set +# CONFIG_MTD_ABSENT is not set + +# +# Mapping drivers for chip access +# +# CONFIG_MTD_COMPLEX_MAPPINGS is not set +# CONFIG_MTD_PLATRAM is not set + +# +# Self-contained MTD device drivers +# +CONFIG_MTD_MSM_NAND=y +# CONFIG_MTD_DATAFLASH is not set +# CONFIG_MTD_M25P80 is not set +# CONFIG_MTD_SST25L is not set +# CONFIG_MTD_SLRAM is not set +# CONFIG_MTD_PHRAM is not set +# CONFIG_MTD_MTDRAM is not set +# CONFIG_MTD_BLOCK2MTD is not set + +# +# Disk-On-Chip Device Drivers +# +# CONFIG_MTD_DOC2000 is not set +# CONFIG_MTD_DOC2001 is not set +# CONFIG_MTD_DOC2001PLUS is not set +CONFIG_MTD_NAND_IDS=y +# CONFIG_MTD_NAND is not set +# CONFIG_MTD_ONENAND is not set + +# +# LPDDR flash memory drivers +# +# CONFIG_MTD_LPDDR is not set + +# +# UBI - Unsorted block images +# +# CONFIG_MTD_UBI is not set +# CONFIG_PARPORT is not set +CONFIG_BLK_DEV=y +# CONFIG_BLK_DEV_COW_COMMON is not set +CONFIG_BLK_DEV_LOOP=y +# CONFIG_BLK_DEV_CRYPTOLOOP is not set +# CONFIG_BLK_DEV_NBD is not set +# CONFIG_BLK_DEV_RAM is not set +# CONFIG_CDROM_PKTCDVD is not set +# CONFIG_ATA_OVER_ETH is not set +# CONFIG_MG_DISK is not set +CONFIG_MISC_DEVICES=y +CONFIG_ANDROID_PMEM=y +# CONFIG_ICS932S401 is not set +# CONFIG_ENCLOSURE_SERVICES is not set +CONFIG_KERNEL_DEBUGGER_CORE=y +# CONFIG_ISL29003 is not set +CONFIG_UID_STAT=y +# CONFIG_WL127X_RFKILL is not set +# CONFIG_APANIC is not set +CONFIG_SENSORS_BMA150_SPI=y +# CONFIG_C2PORT is not set + +# +# EEPROM support +# +# CONFIG_EEPROM_AT24 is not set +# CONFIG_EEPROM_AT25 is not set +# CONFIG_EEPROM_LEGACY is not set +# CONFIG_EEPROM_MAX6875 is not set +# CONFIG_EEPROM_93CX6 is not set +CONFIG_HAVE_IDE=y +# CONFIG_IDE is not set + +# +# SCSI device support +# +# CONFIG_RAID_ATTRS is not set +# CONFIG_SCSI is not set +# CONFIG_SCSI_DMA is not set +# CONFIG_SCSI_NETLINK is not set +# CONFIG_ATA is not set +CONFIG_MD=y +# CONFIG_BLK_DEV_MD is not set +CONFIG_BLK_DEV_DM=y +CONFIG_DM_DEBUG=y +CONFIG_DM_CRYPT=y +# CONFIG_DM_SNAPSHOT is not set +# CONFIG_DM_MIRROR is not set +# CONFIG_DM_ZERO is not set +# CONFIG_DM_MULTIPATH is not set +# CONFIG_DM_DELAY is not set +CONFIG_DM_UEVENT=y +CONFIG_NETDEVICES=y +# CONFIG_IFB is not set +CONFIG_DUMMY=y +# CONFIG_BONDING is not set +# CONFIG_MACVLAN is not set +# CONFIG_EQUALIZER is not set +CONFIG_TUN=m +# CONFIG_VETH is not set +# CONFIG_PHYLIB is not set +CONFIG_NET_ETHERNET=y +CONFIG_MII=y +# CONFIG_AX88796 is not set +CONFIG_SMC91X=y +# CONFIG_DM9000 is not set +# CONFIG_ENC28J60 is not set +# CONFIG_ETHOC is not set +# CONFIG_SMC911X is not set +# CONFIG_SMSC911X is not set +# CONFIG_DNET is not set +# CONFIG_IBM_NEW_EMAC_ZMII is not set +# CONFIG_IBM_NEW_EMAC_RGMII is not set +# CONFIG_IBM_NEW_EMAC_TAH is not set +# CONFIG_IBM_NEW_EMAC_EMAC4 is not set +# CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set +# CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set +# CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set +# CONFIG_B44 is not set +# CONFIG_KS8842 is not set +# CONFIG_KS8851 is not set +# CONFIG_KS8851_MLL is not set +CONFIG_NETDEV_1000=y +CONFIG_NETDEV_10000=y +CONFIG_WLAN=y +# CONFIG_WLAN_PRE80211 is not set +# CONFIG_WLAN_80211 is not set +CONFIG_BCM4329=m +CONFIG_BCM4329_SOFTAP=y +CONFIG_BCM4329_FW_PATH="/system/etc/firmware/fw_bcm4329.bin" +CONFIG_BCM4329_NVRAM_PATH="/proc/calibration" + +# +# Enable WiMAX (Networking options) to see the WiMAX drivers +# +# CONFIG_WAN is not set +CONFIG_PPP=y +# CONFIG_PPP_MULTILINK is not set +# CONFIG_PPP_FILTER is not set +CONFIG_PPP_ASYNC=y +# CONFIG_PPP_SYNC_TTY is not set +CONFIG_PPP_DEFLATE=y +CONFIG_PPP_BSDCOMP=y +CONFIG_PPP_MPPE=y +# CONFIG_PPPOE is not set +# CONFIG_PPPOL2TP is not set +CONFIG_PPPOLAC=y +CONFIG_PPPOPNS=y +# CONFIG_SLIP is not set +CONFIG_SLHC=y +# CONFIG_NETCONSOLE is not set +CONFIG_MSM_RMNET=y +# CONFIG_MSM_RMNET_DEBUG is not set +# CONFIG_NETPOLL is not set +# CONFIG_NET_POLL_CONTROLLER is not set +# CONFIG_KINETO_GAN is not set +# CONFIG_ISDN is not set +# CONFIG_PHONE is not set + +# +# Input device support +# +CONFIG_INPUT=y +# CONFIG_INPUT_FF_MEMLESS is not set +# CONFIG_INPUT_POLLDEV is not set + +# +# Userland interfaces +# +# CONFIG_INPUT_MOUSEDEV is not set +# CONFIG_INPUT_JOYDEV is not set +CONFIG_INPUT_EVDEV=y +# CONFIG_INPUT_EVBUG is not set +CONFIG_INPUT_KEYRESET=y + +# +# Input Device Drivers +# +# CONFIG_INPUT_KEYBOARD is not set +# CONFIG_INPUT_MOUSE is not set +# CONFIG_INPUT_JOYSTICK is not set +# CONFIG_INPUT_TABLET is not set +CONFIG_INPUT_TOUCHSCREEN=y +CONFIG_TOUCHSCREEN_ATMEL=y +# CONFIG_TOUCHSCREEN_ADS7846 is not set +# CONFIG_TOUCHSCREEN_AD7877 is not set +# CONFIG_TOUCHSCREEN_AD7879_I2C is not set +# CONFIG_TOUCHSCREEN_AD7879_SPI is not set +# CONFIG_TOUCHSCREEN_AD7879 is not set +# CONFIG_TOUCHSCREEN_CYPRESS_TMG is not set +# CONFIG_TOUCHSCREEN_EETI is not set +# CONFIG_TOUCHSCREEN_FUJITSU is not set +# CONFIG_TOUCHSCREEN_GUNZE is not set +# CONFIG_TOUCHSCREEN_ELAN_I2C_8232 is not set +# CONFIG_TOUCHSCREEN_ELO is not set +# CONFIG_TOUCHSCREEN_WACOM_W8001 is not set +# CONFIG_TOUCHSCREEN_MCS5000 is not set +# CONFIG_TOUCHSCREEN_MTOUCH is not set +# CONFIG_TOUCHSCREEN_INEXIO is not set +# CONFIG_TOUCHSCREEN_MK712 is not set +# CONFIG_TOUCHSCREEN_PENMOUNT is not set +# CONFIG_TOUCHSCREEN_MSM is not set +# CONFIG_TOUCHSCREEN_SYNAPTICS_I2C_RMI is not set +# CONFIG_TOUCHSCREEN_COMPATIBLE_REPORT is not set +# CONFIG_TOUCHSCREEN_CONCATENATE_REPORT is not set +# CONFIG_TOUCHSCREEN_SYNAPTICS_T1021 is not set +# CONFIG_TOUCHSCREEN_TOUCHRIGHT is not set +# CONFIG_TOUCHSCREEN_TOUCHWIN is not set +# CONFIG_TOUCHSCREEN_USB_COMPOSITE is not set +# CONFIG_TOUCHSCREEN_TOUCHIT213 is not set +# CONFIG_TOUCHSCREEN_TSC2007 is not set +CONFIG_INPUT_MISC=y +# CONFIG_INPUT_ATI_REMOTE is not set +# CONFIG_INPUT_ATI_REMOTE2 is not set +CONFIG_INPUT_KEYCHORD=y +# CONFIG_INPUT_KEYSPAN_REMOTE is not set +# CONFIG_INPUT_POWERMATE is not set +# CONFIG_INPUT_YEALINK is not set +# CONFIG_INPUT_CM109 is not set +CONFIG_INPUT_UINPUT=y +CONFIG_INPUT_GPIO=y +# CONFIG_INPUT_GPIO_ROTARY_ENCODER is not set +CONFIG_LIGHTSENSOR_MICROP=y +# CONFIG_INPUT_CAPELLA_CM3602 is not set +# CONFIG_LIGHTSENSOR_SMD is not set +CONFIG_INPUT_DUMMY_KEYPAD=y +CONFIG_INPUT_OPTICALJOYSTICK=y +CONFIG_OPTICALJOYSTICK_CRUCIAL=y +CONFIG_OPTICALJOYSTICK_CRUCIAL_uP=y +# CONFIG_OPTICALJOYSTICK_CRUCIAL_SPI is not set + +# +# Hardware I/O ports +# +# CONFIG_SERIO is not set +# CONFIG_GAMEPORT is not set + +# +# Character devices +# +# CONFIG_VT is not set +# CONFIG_DEVMEM is not set +# CONFIG_DEVKMEM is not set +# CONFIG_SERIAL_NONSTANDARD is not set + +# +# Serial drivers +# +# CONFIG_SERIAL_8250 is not set + +# +# Non-8250 serial port support +# +# CONFIG_SERIAL_MAX3100 is not set +CONFIG_SERIAL_CORE=y +CONFIG_SERIAL_MSM=y +# CONFIG_SERIAL_MSM_CONSOLE is not set +# CONFIG_SERIAL_MSM_CLOCK_CONTROL is not set +CONFIG_SERIAL_MSM_HS=y +# CONFIG_SERIAL_MSM_HS_PURE_ANDROID is not set +# CONFIG_SERIAL_BCM_BT_LPM is not set +CONFIG_UNIX98_PTYS=y +# CONFIG_DEVPTS_MULTIPLE_INSTANCES is not set +# CONFIG_LEGACY_PTYS is not set +# CONFIG_IPMI_HANDLER is not set +# CONFIG_HW_RANDOM is not set +# CONFIG_R3964 is not set +# CONFIG_RAW_DRIVER is not set +# CONFIG_TCG_TPM is not set +# CONFIG_DCC_TTY is not set +CONFIG_I2C=y +CONFIG_I2C_BOARDINFO=y +CONFIG_I2C_COMPAT=y +# CONFIG_I2C_CHARDEV is not set +CONFIG_I2C_HELPER_AUTO=y + +# +# I2C Hardware Bus support +# + +# +# I2C system bus drivers (mostly embedded / system-on-chip) +# +# CONFIG_I2C_GPIO is not set +CONFIG_I2C_MSM=y +# CONFIG_I2C_OCORES is not set +# CONFIG_I2C_SIMTEC is not set + +# +# External I2C/SMBus adapter drivers +# +# CONFIG_I2C_PARPORT_LIGHT is not set +# CONFIG_I2C_TAOS_EVM is not set + +# +# Other I2C/SMBus bus drivers +# +# CONFIG_I2C_PCA_PLATFORM is not set +# CONFIG_I2C_STUB is not set + +# +# Miscellaneous I2C Chip support +# +# CONFIG_DS1682 is not set +# CONFIG_SENSORS_TSL2550 is not set +# CONFIG_SENSORS_AKM8976 is not set +CONFIG_SENSORS_AKM8973=y +# CONFIG_SENSORS_AKM8975 is not set +CONFIG_SMB329=y +# CONFIG_TPS65200 is not set +# CONFIG_SENSORS_BMA150 is not set +# CONFIG_SENSORS_PCA963X is not set +# CONFIG_SENSORS_MT9T013 is not set +CONFIG_VP_A1026=y +CONFIG_AMP_TPA6130A=y +CONFIG_AMP_TPA2018D1=y +# CONFIG_AMP_TPA2051D3 is not set +# CONFIG_INPUT_ISL29028 is not set +# CONFIG_I2C_DEBUG_CORE is not set +# CONFIG_I2C_DEBUG_ALGO is not set +# CONFIG_I2C_DEBUG_BUS is not set +# CONFIG_I2C_DEBUG_CHIP is not set +CONFIG_SPI=y +CONFIG_SPI_MASTER=y + +# +# SPI Master Controller Drivers +# +# CONFIG_SPI_BITBANG is not set +# CONFIG_SPI_GPIO is not set +CONFIG_SPI_QSD=y +# CONFIG_SPI_QSD_NEW is not set + +# +# SPI Protocol Masters +# +# CONFIG_SPI_SPIDEV is not set +# CONFIG_SPI_TLE62X0 is not set + +# +# PPS support +# +# CONFIG_PPS is not set +CONFIG_ARCH_REQUIRE_GPIOLIB=y +CONFIG_GPIOLIB=y +# CONFIG_GPIO_SYSFS is not set + +# +# Memory mapped GPIO expanders: +# + +# +# I2C GPIO expanders: +# +# CONFIG_GPIO_MAX732X is not set +# CONFIG_GPIO_PCA953X is not set +# CONFIG_GPIO_PCF857X is not set + +# +# PCI GPIO expanders: +# + +# +# SPI GPIO expanders: +# +# CONFIG_GPIO_MAX7301 is not set +# CONFIG_GPIO_MCP23S08 is not set +# CONFIG_GPIO_MC33880 is not set + +# +# AC97 GPIO expanders: +# +# CONFIG_W1 is not set +CONFIG_POWER_SUPPLY=y +# CONFIG_POWER_SUPPLY_DEBUG is not set +# CONFIG_PDA_POWER is not set +# CONFIG_BATTERY_DS2760 is not set +# CONFIG_BATTERY_DS2782 is not set +# CONFIG_BATTERY_DS2784 is not set +# CONFIG_BATTERY_DS2746 is not set +# CONFIG_BATTERY_BQ27x00 is not set +# CONFIG_BATTERY_MAX17040 is not set +# CONFIG_HWMON is not set +# CONFIG_THERMAL is not set +# CONFIG_WATCHDOG is not set +CONFIG_SSB_POSSIBLE=y + +# +# Sonics Silicon Backplane +# +# CONFIG_SSB is not set + +# +# Multifunction device drivers +# +# CONFIG_MFD_CORE is not set +# CONFIG_MFD_SM501 is not set +# CONFIG_MFD_ASIC3 is not set +# CONFIG_HTC_EGPIO is not set +# CONFIG_HTC_PASIC3 is not set +# CONFIG_TPS65010 is not set +# CONFIG_TWL4030_CORE is not set +# CONFIG_MFD_TMIO is not set +# CONFIG_MFD_TC6393XB is not set +# CONFIG_PMIC_DA903X is not set +# CONFIG_MFD_WM8400 is not set +# CONFIG_MFD_WM831X is not set +# CONFIG_MFD_WM8350_I2C is not set +# CONFIG_MFD_PCF50633 is not set +# CONFIG_MFD_MC13783 is not set +# CONFIG_AB3100_CORE is not set +# CONFIG_EZX_PCAP is not set +CONFIG_REGULATOR=y +CONFIG_REGULATOR_DEBUG=y +# CONFIG_REGULATOR_FIXED_VOLTAGE is not set +# CONFIG_REGULATOR_VIRTUAL_CONSUMER is not set +# CONFIG_REGULATOR_USERSPACE_CONSUMER is not set +# CONFIG_REGULATOR_BQ24022 is not set +# CONFIG_REGULATOR_MAX1586 is not set +# CONFIG_REGULATOR_LP3971 is not set +CONFIG_REGULATOR_TPS65023=y +# CONFIG_REGULATOR_TPS6507X is not set +CONFIG_MEDIA_SUPPORT=y + +# +# Multimedia core support +# +CONFIG_VIDEO_DEV=m +CONFIG_VIDEO_V4L2_COMMON=m +CONFIG_VIDEO_ALLOW_V4L1=y +CONFIG_VIDEO_V4L1_COMPAT=y +# CONFIG_DVB_CORE is not set +CONFIG_VIDEO_MEDIA=m + +# +# Multimedia drivers +# +# CONFIG_MEDIA_ATTACH is not set +CONFIG_MEDIA_TUNER=m +# CONFIG_MEDIA_TUNER_CUSTOMISE is not set +CONFIG_MEDIA_TUNER_SIMPLE=m +CONFIG_MEDIA_TUNER_TDA8290=m +CONFIG_MEDIA_TUNER_TDA9887=m +CONFIG_MEDIA_TUNER_TEA5761=m +CONFIG_MEDIA_TUNER_TEA5767=m +CONFIG_MEDIA_TUNER_MT20XX=m +CONFIG_MEDIA_TUNER_XC2028=m +CONFIG_MEDIA_TUNER_XC5000=m +CONFIG_MEDIA_TUNER_MC44S803=m +CONFIG_VIDEO_V4L2=m +CONFIG_VIDEO_V4L1=m +CONFIG_VIDEO_CAPTURE_DRIVERS=y +# CONFIG_VIDEO_ADV_DEBUG is not set +# CONFIG_VIDEO_FIXED_MINOR_RANGES is not set +CONFIG_VIDEO_HELPER_CHIPS_AUTO=y +# CONFIG_VIDEO_VIVI is not set +# CONFIG_VIDEO_CPIA is not set +# CONFIG_VIDEO_SAA5246A is not set +# CONFIG_VIDEO_SAA5249 is not set +# CONFIG_SOC_CAMERA is not set + +# +# Qualcomm MSM Camera And Video +# +CONFIG_MSM_CAMERA=y +CONFIG_MSM_CAMERA_LEGACY=y +# CONFIG_MSM_CAMERA_7X30 is not set +CONFIG_720P_CAMERA=y +# CONFIG_MSM_CAMERA_DEBUG is not set + +# +# Camera Sensor Selection +# +# CONFIG_MT9T013 is not set +# CONFIG_MT9D112 is not set +# CONFIG_MT9P012 is not set +# CONFIG_S5K3E2FX is not set +# CONFIG_S5K4E1GX is not set +CONFIG_OV8810=y +# CONFIG_OV9665 is not set +# CONFIG_S5K3H1GX is not set +# CONFIG_MT9V113 is not set +CONFIG_RADIO_ADAPTERS=y +# CONFIG_I2C_SI4713 is not set +# CONFIG_RADIO_SI4713 is not set +# CONFIG_RADIO_SI470X is not set +# CONFIG_RADIO_TEA5764 is not set +# CONFIG_DAB is not set + +# +# Graphics support +# +# CONFIG_VGASTATE is not set +CONFIG_VIDEO_OUTPUT_CONTROL=y +CONFIG_FB=y +# CONFIG_FIRMWARE_EDID is not set +# CONFIG_FB_DDC is not set +# CONFIG_FB_BOOT_VESA_SUPPORT is not set +CONFIG_FB_CFB_FILLRECT=y +CONFIG_FB_CFB_COPYAREA=y +CONFIG_FB_CFB_IMAGEBLIT=y +# CONFIG_FB_CFB_REV_PIXELS_IN_BYTE is not set +# CONFIG_FB_SYS_FILLRECT is not set +# CONFIG_FB_SYS_COPYAREA is not set +# CONFIG_FB_SYS_IMAGEBLIT is not set +# CONFIG_FB_FOREIGN_ENDIAN is not set +# CONFIG_FB_SYS_FOPS is not set +# CONFIG_FB_SVGALIB is not set +# CONFIG_FB_MACMODES is not set +# CONFIG_FB_BACKLIGHT is not set +# CONFIG_FB_MODE_HELPERS is not set +# CONFIG_FB_TILEBLITTING is not set + +# +# Frame buffer hardware drivers +# +# CONFIG_FB_S1D13XXX is not set +# CONFIG_FB_VIRTUAL is not set +# CONFIG_FB_METRONOME is not set +# CONFIG_FB_MB862XX is not set +# CONFIG_FB_BROADSHEET is not set +CONFIG_FB_MSM=y +CONFIG_FB_MSM_LCDC=y +CONFIG_FB_MSM_TVOUT=y +CONFIG_GPU_MSM_KGSL=y +CONFIG_MSM_KGSL_MMU=y +# CONFIG_MSM_KGSL_PER_FD_PAGETABLE is not set +# CONFIG_MSM_HDMI is not set +# CONFIG_BACKLIGHT_LCD_SUPPORT is not set + +# +# Display device support +# +# CONFIG_DISPLAY_SUPPORT is not set +# CONFIG_LOGO is not set +# CONFIG_SOUND is not set +CONFIG_HID_SUPPORT=y +CONFIG_HID=y +# CONFIG_HIDRAW is not set +# CONFIG_HID_PID is not set + +# +# Special HID drivers +# +# CONFIG_HID_APPLE is not set +# CONFIG_HID_WACOM is not set +CONFIG_USB_SUPPORT=y +CONFIG_USB_ARCH_HAS_HCD=y +# CONFIG_USB_ARCH_HAS_OHCI is not set +# CONFIG_USB_ARCH_HAS_EHCI is not set +# CONFIG_USB is not set +# CONFIG_USB_OTG_WHITELIST is not set +# CONFIG_USB_OTG_BLACKLIST_HUB is not set +# CONFIG_USB_MUSB_HDRC is not set +# CONFIG_USB_GADGET_MUSB_HDRC is not set + +# +# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may +# +CONFIG_USB_GADGET=y +# CONFIG_USB_GADGET_DEBUG_FILES is not set +CONFIG_USB_GADGET_VBUS_DRAW=500 +CONFIG_USB_GADGET_SELECTED=y +# CONFIG_USB_GADGET_AT91 is not set +# CONFIG_USB_GADGET_ATMEL_USBA is not set +# CONFIG_USB_GADGET_FSL_USB2 is not set +# CONFIG_USB_GADGET_LH7A40X is not set +# CONFIG_USB_GADGET_OMAP is not set +# CONFIG_USB_GADGET_PXA25X is not set +# CONFIG_USB_GADGET_R8A66597 is not set +# CONFIG_USB_GADGET_PXA27X is not set +# CONFIG_USB_GADGET_S3C_HSOTG is not set +# CONFIG_USB_GADGET_IMX is not set +# CONFIG_USB_GADGET_S3C2410 is not set +# CONFIG_USB_GADGET_M66592 is not set +# CONFIG_USB_GADGET_AMD5536UDC is not set +# CONFIG_USB_GADGET_FSL_QE is not set +# CONFIG_USB_GADGET_CI13XXX is not set +# CONFIG_USB_GADGET_NET2280 is not set +# CONFIG_USB_GADGET_GOKU is not set +# CONFIG_USB_GADGET_LANGWELL is not set +CONFIG_USB_GADGET_MSM_72K=y +CONFIG_USB_MSM_72K=y +# CONFIG_USB_GADGET_DUMMY_HCD is not set +CONFIG_USB_GADGET_DUALSPEED=y +# CONFIG_USB_ZERO is not set +# CONFIG_USB_AUDIO is not set +# CONFIG_USB_ETH is not set +# CONFIG_USB_GADGETFS is not set +# CONFIG_USB_FILE_STORAGE is not set +# CONFIG_USB_G_SERIAL is not set +# CONFIG_USB_MIDI_GADGET is not set +# CONFIG_USB_G_PRINTER is not set +CONFIG_USB_ANDROID=y +# CONFIG_USB_ANDROID_ACM is not set +CONFIG_USB_ANDROID_ADB=y +CONFIG_USB_ANDROID_DIAG=y +CONFIG_USB_ANDROID_MASS_STORAGE=y +CONFIG_USB_ANDROID_RNDIS=y +CONFIG_USB_ANDROID_SERIAL=y +CONFIG_USB_ANDROID_PROJECTOR=y +# CONFIG_USB_ANDROID_MTP is not set +# CONFIG_USB_CDC_COMPOSITE is not set +CONFIG_USB_ACCESSORY_DETECT=y +# CONFIG_USB_ACCESSORY_DETECT_BY_ADC is not set + +# +# OTG and related infrastructure +# +# CONFIG_USB_GPIO_VBUS is not set +# CONFIG_NOP_USB_XCEIV is not set + +# +# USB Function Support +# +# CONFIG_USB_FUNCTION is not set +CONFIG_MMC=y +# CONFIG_MMC_DEBUG is not set +CONFIG_MMC_UNSAFE_RESUME=y +CONFIG_MMC_EMBEDDED_SDIO=y +CONFIG_MMC_PARANOID_SD_INIT=y + +# +# MMC/SD/SDIO Card Drivers +# +CONFIG_MMC_BLOCK=y +# CONFIG_MMC_BLOCK_BOUNCE is not set +CONFIG_MMC_BLOCK_PARANOID_RESUME=y +CONFIG_MMC_BLOCK_DEFERRED_RESUME=y +# CONFIG_SDIO_UART is not set +# CONFIG_MMC_TEST is not set + +# +# MMC/SD/SDIO Host Controller Drivers +# +# CONFIG_MMC_SDHCI is not set +# CONFIG_MMC_AT91 is not set +# CONFIG_MMC_ATMELMCI is not set +CONFIG_MMC_MSM7X00A=y +# CONFIG_MEMSTICK is not set +CONFIG_NEW_LEDS=y +CONFIG_LEDS_CLASS=y + +# +# LED drivers +# +# CONFIG_LEDS_PCA9532 is not set +CONFIG_LEDS_GPIO=y +CONFIG_LEDS_GPIO_PLATFORM=y +# CONFIG_LEDS_LP3944 is not set +CONFIG_LEDS_CPLD=y +# CONFIG_LEDS_PCA955X is not set +# CONFIG_LEDS_DAC124S085 is not set +# CONFIG_LEDS_BD2802 is not set + +# +# LED Triggers +# +CONFIG_LEDS_TRIGGERS=y +CONFIG_LEDS_TRIGGER_TIMER=y +CONFIG_LEDS_TRIGGER_HEARTBEAT=y +# CONFIG_LEDS_TRIGGER_BACKLIGHT is not set +# CONFIG_LEDS_TRIGGER_GPIO is not set +# CONFIG_LEDS_TRIGGER_DEFAULT_ON is not set +CONFIG_LEDS_TRIGGER_SLEEP=y + +# +# iptables trigger is under Netfilter config (LED target) +# +CONFIG_SWITCH=y +CONFIG_SWITCH_GPIO=y +# CONFIG_ACCESSIBILITY is not set +CONFIG_RTC_LIB=y +CONFIG_RTC_CLASS=y +CONFIG_RTC_HCTOSYS=y +CONFIG_RTC_HCTOSYS_DEVICE="rtc0" +# CONFIG_RTC_DEBUG is not set + +# +# RTC interfaces +# +# CONFIG_RTC_INTF_SYSFS is not set +# CONFIG_RTC_INTF_PROC is not set +# CONFIG_RTC_INTF_DEV is not set +CONFIG_RTC_INTF_ALARM=y +CONFIG_RTC_INTF_ALARM_DEV=y +# CONFIG_RTC_DRV_TEST is not set + +# +# I2C RTC drivers +# +# CONFIG_RTC_DRV_DS1307 is not set +# CONFIG_RTC_DRV_DS1374 is not set +# CONFIG_RTC_DRV_DS1672 is not set +# CONFIG_RTC_DRV_MAX6900 is not set +# CONFIG_RTC_DRV_RS5C372 is not set +# CONFIG_RTC_DRV_ISL1208 is not set +# CONFIG_RTC_DRV_X1205 is not set +# CONFIG_RTC_DRV_PCF8563 is not set +# CONFIG_RTC_DRV_PCF8583 is not set +# CONFIG_RTC_DRV_M41T80 is not set +# CONFIG_RTC_DRV_S35390A is not set +# CONFIG_RTC_DRV_FM3130 is not set +# CONFIG_RTC_DRV_RX8581 is not set +# CONFIG_RTC_DRV_RX8025 is not set + +# +# SPI RTC drivers +# +# CONFIG_RTC_DRV_M41T94 is not set +# CONFIG_RTC_DRV_DS1305 is not set +# CONFIG_RTC_DRV_DS1390 is not set +# CONFIG_RTC_DRV_MAX6902 is not set +# CONFIG_RTC_DRV_R9701 is not set +# CONFIG_RTC_DRV_RS5C348 is not set +# CONFIG_RTC_DRV_DS3234 is not set +# CONFIG_RTC_DRV_PCF2123 is not set + +# +# Platform RTC drivers +# +# CONFIG_RTC_DRV_CMOS is not set +# CONFIG_RTC_DRV_DS1286 is not set +# CONFIG_RTC_DRV_DS1511 is not set +# CONFIG_RTC_DRV_DS1553 is not set +# CONFIG_RTC_DRV_DS1742 is not set +# CONFIG_RTC_DRV_STK17TA8 is not set +# CONFIG_RTC_DRV_M48T86 is not set +# CONFIG_RTC_DRV_M48T35 is not set +# CONFIG_RTC_DRV_M48T59 is not set +# CONFIG_RTC_DRV_BQ4802 is not set +# CONFIG_RTC_DRV_V3020 is not set + +# +# on-CPU RTC drivers +# +CONFIG_RTC_DRV_MSM7X00A=y +# CONFIG_DMADEVICES is not set +# CONFIG_AUXDISPLAY is not set +# CONFIG_UIO is not set + +# +# TI VLYNQ +# +CONFIG_STAGING=y +# CONFIG_STAGING_EXCLUDE_BUILD is not set +# CONFIG_ECHO is not set + +# +# Android +# +CONFIG_ANDROID=y +CONFIG_ANDROID_BINDER_IPC=y +CONFIG_ANDROID_LOGGER=y +CONFIG_ANDROID_RAM_CONSOLE=y +CONFIG_ANDROID_RAM_CONSOLE_ENABLE_VERBOSE=y +CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION=y +CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION_DATA_SIZE=128 +CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION_ECC_SIZE=16 +CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION_SYMBOL_SIZE=8 +CONFIG_ANDROID_RAM_CONSOLE_ERROR_CORRECTION_POLYNOMIAL=0x11d +# CONFIG_ANDROID_RAM_CONSOLE_EARLY_INIT is not set +CONFIG_ANDROID_TIMED_OUTPUT=y +CONFIG_ANDROID_TIMED_GPIO=y +CONFIG_ANDROID_LOW_MEMORY_KILLER=y + +# +# Qualcomm MSM Camera And Video +# +# CONFIG_MSM_CAMERA_FLASH is not set + +# +# Camera Sensor Selection +# +# CONFIG_DST is not set +# CONFIG_POHMELFS is not set +# CONFIG_PLAN9AUTH is not set + +# +# RAR Register Driver +# +# CONFIG_RAR_REGISTER is not set +# CONFIG_IIO is not set +# CONFIG_BTPORT is not set + +# +# File systems +# +CONFIG_EXT2_FS=y +CONFIG_EXT2_FS_XATTR=y +CONFIG_EXT2_FS_POSIX_ACL=y +CONFIG_EXT2_FS_SECURITY=y +# CONFIG_EXT2_FS_XIP is not set +CONFIG_EXT3_FS=y +# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set +CONFIG_EXT3_FS_XATTR=y +CONFIG_EXT3_FS_POSIX_ACL=y +CONFIG_EXT3_FS_SECURITY=y +CONFIG_EXT4_FS=y +CONFIG_EXT4_FS_XATTR=y +CONFIG_EXT4_FS_POSIX_ACL=y +CONFIG_EXT4_FS_SECURITY=y +# CONFIG_EXT4_DEBUG is not set +CONFIG_JBD=y +CONFIG_JBD2=y +CONFIG_FS_MBCACHE=y +# CONFIG_REISERFS_FS is not set +# CONFIG_JFS_FS is not set +CONFIG_FS_POSIX_ACL=y +# CONFIG_XFS_FS is not set +# CONFIG_GFS2_FS is not set +# CONFIG_OCFS2_FS is not set +# CONFIG_BTRFS_FS is not set +# CONFIG_NILFS2_FS is not set +CONFIG_FILE_LOCKING=y +CONFIG_FSNOTIFY=y +# CONFIG_DNOTIFY is not set +CONFIG_INOTIFY=y +CONFIG_INOTIFY_USER=y +# CONFIG_QUOTA is not set +# CONFIG_AUTOFS_FS is not set +# CONFIG_AUTOFS4_FS is not set +# CONFIG_FUSE_FS is not set + +# +# Caches +# +# CONFIG_FSCACHE is not set + +# +# CD-ROM/DVD Filesystems +# +# CONFIG_ISO9660_FS is not set +# CONFIG_UDF_FS is not set + +# +# DOS/FAT/NT Filesystems +# +CONFIG_FAT_FS=y +# CONFIG_MSDOS_FS is not set +CONFIG_VFAT_FS=y +CONFIG_FAT_DEFAULT_CODEPAGE=437 +CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1" +# CONFIG_NTFS_FS is not set + +# +# Pseudo filesystems +# +CONFIG_PROC_FS=y +CONFIG_PROC_SYSCTL=y +CONFIG_PROC_PAGE_MONITOR=y +CONFIG_SYSFS=y +CONFIG_TMPFS=y +# CONFIG_TMPFS_POSIX_ACL is not set +# CONFIG_HUGETLB_PAGE is not set +# CONFIG_CONFIGFS_FS is not set +CONFIG_MISC_FILESYSTEMS=y +# CONFIG_ADFS_FS is not set +# CONFIG_AFFS_FS is not set +# CONFIG_HFS_FS is not set +# CONFIG_HFSPLUS_FS is not set +# CONFIG_BEFS_FS is not set +# CONFIG_BFS_FS is not set +# CONFIG_EFS_FS is not set +CONFIG_YAFFS_FS=y +CONFIG_YAFFS_YAFFS1=y +# CONFIG_YAFFS_9BYTE_TAGS is not set +# CONFIG_YAFFS_DOES_ECC is not set +CONFIG_YAFFS_YAFFS2=y +CONFIG_YAFFS_AUTO_YAFFS2=y +CONFIG_YAFFS_DISABLE_TAGS_ECC=y +# CONFIG_YAFFS_DISABLE_WIDE_TNODES is not set +# CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED is not set +CONFIG_YAFFS_SHORT_NAMES_IN_RAM=y +# CONFIG_YAFFS_EMPTY_LOST_AND_FOUND is not set +# CONFIG_YAFFS_DISABLE_BLOCK_REFRESHING is not set +# CONFIG_YAFFS_DISABLE_BACKGROUND is not set +CONFIG_YAFFS_XATTR=y +# CONFIG_JFFS2_FS is not set +# CONFIG_CRAMFS is not set +# CONFIG_SQUASHFS is not set +# CONFIG_VXFS_FS is not set +# CONFIG_MINIX_FS is not set +# CONFIG_OMFS_FS is not set +# CONFIG_HPFS_FS is not set +# CONFIG_QNX4FS_FS is not set +# CONFIG_ROMFS_FS is not set +# CONFIG_SYSV_FS is not set +# CONFIG_UFS_FS is not set +CONFIG_NETWORK_FILESYSTEMS=y +# CONFIG_NFS_FS is not set +# CONFIG_NFSD is not set +# CONFIG_SMB_FS is not set +CONFIG_CIFS=m +# CONFIG_CIFS_STATS is not set +# CONFIG_CIFS_WEAK_PW_HASH is not set +# CONFIG_CIFS_XATTR is not set +# CONFIG_CIFS_DEBUG2 is not set +# CONFIG_CIFS_EXPERIMENTAL is not set +# CONFIG_NCP_FS is not set +# CONFIG_CODA_FS is not set +# CONFIG_AFS_FS is not set + +# +# Partition Types +# +# CONFIG_PARTITION_ADVANCED is not set +CONFIG_MSDOS_PARTITION=y +CONFIG_NLS=y +CONFIG_NLS_DEFAULT="iso8859-1" +CONFIG_NLS_CODEPAGE_437=y +# CONFIG_NLS_CODEPAGE_737 is not set +# CONFIG_NLS_CODEPAGE_775 is not set +# CONFIG_NLS_CODEPAGE_850 is not set +# CONFIG_NLS_CODEPAGE_852 is not set +# CONFIG_NLS_CODEPAGE_855 is not set +# CONFIG_NLS_CODEPAGE_857 is not set +# CONFIG_NLS_CODEPAGE_860 is not set +# CONFIG_NLS_CODEPAGE_861 is not set +# CONFIG_NLS_CODEPAGE_862 is not set +# CONFIG_NLS_CODEPAGE_863 is not set +# CONFIG_NLS_CODEPAGE_864 is not set +# CONFIG_NLS_CODEPAGE_865 is not set +# CONFIG_NLS_CODEPAGE_866 is not set +# CONFIG_NLS_CODEPAGE_869 is not set +# CONFIG_NLS_CODEPAGE_936 is not set +# CONFIG_NLS_CODEPAGE_950 is not set +# CONFIG_NLS_CODEPAGE_932 is not set +# CONFIG_NLS_CODEPAGE_949 is not set +# CONFIG_NLS_CODEPAGE_874 is not set +# CONFIG_NLS_ISO8859_8 is not set +# CONFIG_NLS_CODEPAGE_1250 is not set +# CONFIG_NLS_CODEPAGE_1251 is not set +# CONFIG_NLS_ASCII is not set +CONFIG_NLS_ISO8859_1=y +# CONFIG_NLS_ISO8859_2 is not set +# CONFIG_NLS_ISO8859_3 is not set +# CONFIG_NLS_ISO8859_4 is not set +# CONFIG_NLS_ISO8859_5 is not set +# CONFIG_NLS_ISO8859_6 is not set +# CONFIG_NLS_ISO8859_7 is not set +# CONFIG_NLS_ISO8859_9 is not set +# CONFIG_NLS_ISO8859_13 is not set +# CONFIG_NLS_ISO8859_14 is not set +# CONFIG_NLS_ISO8859_15 is not set +# CONFIG_NLS_KOI8_R is not set +# CONFIG_NLS_KOI8_U is not set +# CONFIG_NLS_UTF8 is not set +# CONFIG_DLM is not set + +# +# Kernel hacking +# +CONFIG_PRINTK_TIME=y +CONFIG_ENABLE_WARN_DEPRECATED=y +CONFIG_ENABLE_MUST_CHECK=y +CONFIG_FRAME_WARN=1024 +CONFIG_MAGIC_SYSRQ=y +# CONFIG_STRIP_ASM_SYMS is not set +# CONFIG_UNUSED_SYMBOLS is not set +# CONFIG_DEBUG_FS is not set +# CONFIG_HEADERS_CHECK is not set +# CONFIG_DEBUG_KERNEL is not set +# CONFIG_SLUB_DEBUG_ON is not set +# CONFIG_SLUB_STATS is not set +# CONFIG_DEBUG_BUGVERBOSE is not set +# CONFIG_DEBUG_MEMORY_INIT is not set +# CONFIG_LATENCYTOP is not set +CONFIG_HAVE_FUNCTION_TRACER=y +CONFIG_TRACING_SUPPORT=y +CONFIG_FTRACE=y +# CONFIG_FUNCTION_TRACER is not set +# CONFIG_IRQSOFF_TRACER is not set +# CONFIG_PREEMPT_TRACER is not set +# CONFIG_SCHED_TRACER is not set +# CONFIG_ENABLE_DEFAULT_TRACERS is not set +# CONFIG_BOOT_TRACER is not set +CONFIG_BRANCH_PROFILE_NONE=y +# CONFIG_PROFILE_ANNOTATED_BRANCHES is not set +# CONFIG_PROFILE_ALL_BRANCHES is not set +# CONFIG_STACK_TRACER is not set +# CONFIG_KMEMTRACE is not set +# CONFIG_WORKQUEUE_TRACER is not set +# CONFIG_BLK_DEV_IO_TRACE is not set +# CONFIG_SAMPLES is not set +CONFIG_HAVE_ARCH_KGDB=y +CONFIG_ARM_UNWIND=y +# CONFIG_DEBUG_USER is not set + +# +# Security options +# +# CONFIG_KEYS is not set +# CONFIG_SECURITY is not set +# CONFIG_SECURITYFS is not set +# CONFIG_SECURITY_FILE_CAPABILITIES is not set +CONFIG_CRYPTO=y + +# +# Crypto core or helper +# +CONFIG_CRYPTO_ALGAPI=y +CONFIG_CRYPTO_ALGAPI2=y +CONFIG_CRYPTO_AEAD=y +CONFIG_CRYPTO_AEAD2=y +CONFIG_CRYPTO_BLKCIPHER=y +CONFIG_CRYPTO_BLKCIPHER2=y +CONFIG_CRYPTO_HASH=y +CONFIG_CRYPTO_HASH2=y +CONFIG_CRYPTO_RNG2=y +CONFIG_CRYPTO_PCOMP=y +CONFIG_CRYPTO_MANAGER=y +CONFIG_CRYPTO_MANAGER2=y +# CONFIG_CRYPTO_GF128MUL is not set +# CONFIG_CRYPTO_NULL is not set +CONFIG_CRYPTO_WORKQUEUE=y +# CONFIG_CRYPTO_CRYPTD is not set +CONFIG_CRYPTO_AUTHENC=y +# CONFIG_CRYPTO_TEST is not set + +# +# Authenticated Encryption with Associated Data +# +# CONFIG_CRYPTO_CCM is not set +# CONFIG_CRYPTO_GCM is not set +# CONFIG_CRYPTO_SEQIV is not set + +# +# Block modes +# +CONFIG_CRYPTO_CBC=y +# CONFIG_CRYPTO_CTR is not set +# CONFIG_CRYPTO_CTS is not set +CONFIG_CRYPTO_ECB=y +# CONFIG_CRYPTO_LRW is not set +# CONFIG_CRYPTO_PCBC is not set +# CONFIG_CRYPTO_XTS is not set + +# +# Hash modes +# +CONFIG_CRYPTO_HMAC=y +# CONFIG_CRYPTO_XCBC is not set +# CONFIG_CRYPTO_VMAC is not set + +# +# Digest +# +CONFIG_CRYPTO_CRC32C=y +# CONFIG_CRYPTO_GHASH is not set +# CONFIG_CRYPTO_MD4 is not set +CONFIG_CRYPTO_MD5=y +# CONFIG_CRYPTO_MICHAEL_MIC is not set +# CONFIG_CRYPTO_RMD128 is not set +# CONFIG_CRYPTO_RMD160 is not set +# CONFIG_CRYPTO_RMD256 is not set +# CONFIG_CRYPTO_RMD320 is not set +CONFIG_CRYPTO_SHA1=y +# CONFIG_CRYPTO_SHA256 is not set +# CONFIG_CRYPTO_SHA512 is not set +# CONFIG_CRYPTO_TGR192 is not set +# CONFIG_CRYPTO_WP512 is not set + +# +# Ciphers +# +CONFIG_CRYPTO_AES=y +# CONFIG_CRYPTO_ANUBIS is not set +CONFIG_CRYPTO_ARC4=y +# CONFIG_CRYPTO_BLOWFISH is not set +# CONFIG_CRYPTO_CAMELLIA is not set +# CONFIG_CRYPTO_CAST5 is not set +# CONFIG_CRYPTO_CAST6 is not set +CONFIG_CRYPTO_DES=y +# CONFIG_CRYPTO_FCRYPT is not set +# CONFIG_CRYPTO_KHAZAD is not set +# CONFIG_CRYPTO_SALSA20 is not set +# CONFIG_CRYPTO_SEED is not set +# CONFIG_CRYPTO_SERPENT is not set +# CONFIG_CRYPTO_TEA is not set +CONFIG_CRYPTO_TWOFISH=y +CONFIG_CRYPTO_TWOFISH_COMMON=y + +# +# Compression +# +CONFIG_CRYPTO_DEFLATE=y +# CONFIG_CRYPTO_ZLIB is not set +# CONFIG_CRYPTO_LZO is not set + +# +# Random Number Generation +# +# CONFIG_CRYPTO_ANSI_CPRNG is not set +CONFIG_CRYPTO_HW=y +# CONFIG_BINARY_PRINTF is not set + +# +# Library routines +# +CONFIG_BITREVERSE=y +CONFIG_GENERIC_FIND_LAST_BIT=y +CONFIG_CRC_CCITT=y +CONFIG_CRC16=y +# CONFIG_CRC_T10DIF is not set +# CONFIG_CRC_ITU_T is not set +CONFIG_CRC32=y +# CONFIG_CRC7 is not set +CONFIG_LIBCRC32C=y +CONFIG_ZLIB_INFLATE=y +CONFIG_ZLIB_DEFLATE=y +CONFIG_DECOMPRESS_GZIP=y +CONFIG_DECOMPRESS_LZMA=y +CONFIG_GENERIC_ALLOCATOR=y +CONFIG_REED_SOLOMON=y +CONFIG_REED_SOLOMON_ENC8=y +CONFIG_REED_SOLOMON_DEC8=y +CONFIG_TEXTSEARCH=y +CONFIG_TEXTSEARCH_KMP=y +CONFIG_TEXTSEARCH_BM=y +CONFIG_TEXTSEARCH_FSM=y +CONFIG_HAS_IOMEM=y +CONFIG_HAS_IOPORT=y +CONFIG_HAS_DMA=y +CONFIG_NLATTR=y diff --git a/drivers/usb/index.html b/drivers/usb/index.html new file mode 100644 index 00000000..694d3938 --- /dev/null +++ b/drivers/usb/index.html @@ -0,0 +1,167 @@ + + + diff --git a/fs/yaffs2/yaffs_allocator.c b/fs/yaffs2/yaffs_allocator.c new file mode 100644 index 00000000..a284439c --- /dev/null +++ b/fs/yaffs2/yaffs_allocator.c @@ -0,0 +1,408 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + + + +#include "yaffs_allocator.h" +#include "yaffs_guts.h" +#include "yaffs_trace.h" +#include "yportenv.h" + +#ifdef CONFIG_YAFFS_YMALLOC_ALLOCATOR + +void yaffs_DeinitialiseRawTnodesAndObjects(yaffs_Device *dev) +{ + dev = dev; +} + +void yaffs_InitialiseRawTnodesAndObjects(yaffs_Device *dev) +{ + dev = dev; +} + +yaffs_Tnode *yaffs_AllocateRawTnode(yaffs_Device *dev) +{ + return (yaffs_Tnode *)YMALLOC(dev->tnodeSize); +} + +void yaffs_FreeRawTnode(yaffs_Device *dev, yaffs_Tnode *tn) +{ + dev = dev; + YFREE(tn); +} + +void yaffs_InitialiseRawObjects(yaffs_Device *dev) +{ + dev = dev; +} + +void yaffs_DeinitialiseRawObjects(yaffs_Device *dev) +{ + dev = dev; +} + +yaffs_Object *yaffs_AllocateRawObject(yaffs_Device *dev) +{ + dev = dev; + return (yaffs_Object *) YMALLOC(sizeof(yaffs_Object)); +} + + +void yaffs_FreeRawObject(yaffs_Device *dev, yaffs_Object *obj) +{ + + dev = dev; + YFREE(obj); +} + +#else + +struct yaffs_TnodeList_struct { + struct yaffs_TnodeList_struct *next; + yaffs_Tnode *tnodes; +}; + +typedef struct yaffs_TnodeList_struct yaffs_TnodeList; + +struct yaffs_ObjectList_struct { + yaffs_Object *objects; + struct yaffs_ObjectList_struct *next; +}; + +typedef struct yaffs_ObjectList_struct yaffs_ObjectList; + + +struct yaffs_AllocatorStruct { + int nTnodesCreated; + yaffs_Tnode *freeTnodes; + int nFreeTnodes; + yaffs_TnodeList *allocatedTnodeList; + + int nObjectsCreated; + yaffs_Object *freeObjects; + int nFreeObjects; + + yaffs_ObjectList *allocatedObjectList; +}; + +typedef struct yaffs_AllocatorStruct yaffs_Allocator; + + +static void yaffs_DeinitialiseRawTnodes(yaffs_Device *dev) +{ + + yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; + + yaffs_TnodeList *tmp; + + if(!allocator){ + YBUG(); + return; + } + + while (allocator->allocatedTnodeList) { + tmp = allocator->allocatedTnodeList->next; + + YFREE(allocator->allocatedTnodeList->tnodes); + YFREE(allocator->allocatedTnodeList); + allocator->allocatedTnodeList = tmp; + + } + + allocator->freeTnodes = NULL; + allocator->nFreeTnodes = 0; + allocator->nTnodesCreated = 0; +} + +static void yaffs_InitialiseRawTnodes(yaffs_Device *dev) +{ + yaffs_Allocator *allocator = dev->allocator; + + if(allocator){ + allocator->allocatedTnodeList = NULL; + allocator->freeTnodes = NULL; + allocator->nFreeTnodes = 0; + allocator->nTnodesCreated = 0; + } else + YBUG(); +} + +static int yaffs_CreateTnodes(yaffs_Device *dev, int nTnodes) +{ + yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; + int i; + yaffs_Tnode *newTnodes; + __u8 *mem; + yaffs_Tnode *curr; + yaffs_Tnode *next; + yaffs_TnodeList *tnl; + + if(!allocator){ + YBUG(); + return YAFFS_FAIL; + } + + if (nTnodes < 1) + return YAFFS_OK; + + + /* make these things */ + + newTnodes = YMALLOC(nTnodes * dev->tnodeSize); + mem = (__u8 *)newTnodes; + + if (!newTnodes) { + T(YAFFS_TRACE_ERROR, + (TSTR("yaffs: Could not allocate Tnodes" TENDSTR))); + return YAFFS_FAIL; + } + + /* New hookup for wide tnodes */ + for (i = 0; i < nTnodes - 1; i++) { + curr = (yaffs_Tnode *) &mem[i * dev->tnodeSize]; + next = (yaffs_Tnode *) &mem[(i+1) * dev->tnodeSize]; + curr->internal[0] = next; + } + + curr = (yaffs_Tnode *) &mem[(nTnodes - 1) * dev->tnodeSize]; + curr->internal[0] = allocator->freeTnodes; + allocator->freeTnodes = (yaffs_Tnode *)mem; + + allocator->nFreeTnodes += nTnodes; + allocator->nTnodesCreated += nTnodes; + + /* Now add this bunch of tnodes to a list for freeing up. + * NB If we can't add this to the management list it isn't fatal + * but it just means we can't free this bunch of tnodes later. + */ + + tnl = YMALLOC(sizeof(yaffs_TnodeList)); + if (!tnl) { + T(YAFFS_TRACE_ERROR, + (TSTR + ("yaffs: Could not add tnodes to management list" TENDSTR))); + return YAFFS_FAIL; + } else { + tnl->tnodes = newTnodes; + tnl->next = allocator->allocatedTnodeList; + allocator->allocatedTnodeList = tnl; + } + + T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR))); + + return YAFFS_OK; +} + + +yaffs_Tnode *yaffs_AllocateRawTnode(yaffs_Device *dev) +{ + yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; + yaffs_Tnode *tn = NULL; + + if(!allocator){ + YBUG(); + return NULL; + } + + /* If there are none left make more */ + if (!allocator->freeTnodes) + yaffs_CreateTnodes(dev, YAFFS_ALLOCATION_NTNODES); + + if (allocator->freeTnodes) { + tn = allocator->freeTnodes; + allocator->freeTnodes = allocator->freeTnodes->internal[0]; + allocator->nFreeTnodes--; + } + + return tn; +} + +/* FreeTnode frees up a tnode and puts it back on the free list */ +void yaffs_FreeRawTnode(yaffs_Device *dev, yaffs_Tnode *tn) +{ + yaffs_Allocator *allocator = dev->allocator; + + if(!allocator){ + YBUG(); + return; + } + + if (tn) { + tn->internal[0] = allocator->freeTnodes; + allocator->freeTnodes = tn; + allocator->nFreeTnodes++; + } + dev->nCheckpointBlocksRequired = 0; /* force recalculation*/ +} + + + +static void yaffs_InitialiseRawObjects(yaffs_Device *dev) +{ + yaffs_Allocator *allocator = dev->allocator; + + if(allocator) { + allocator->allocatedObjectList = NULL; + allocator->freeObjects = NULL; + allocator->nFreeObjects = 0; + } else + YBUG(); +} + +static void yaffs_DeinitialiseRawObjects(yaffs_Device *dev) +{ + yaffs_Allocator *allocator = dev->allocator; + yaffs_ObjectList *tmp; + + if(!allocator){ + YBUG(); + return; + } + + while (allocator->allocatedObjectList) { + tmp = allocator->allocatedObjectList->next; + YFREE(allocator->allocatedObjectList->objects); + YFREE(allocator->allocatedObjectList); + + allocator->allocatedObjectList = tmp; + } + + allocator->freeObjects = NULL; + allocator->nFreeObjects = 0; + allocator->nObjectsCreated = 0; +} + + +static int yaffs_CreateFreeObjects(yaffs_Device *dev, int nObjects) +{ + yaffs_Allocator *allocator = dev->allocator; + + int i; + yaffs_Object *newObjects; + yaffs_ObjectList *list; + + if(!allocator){ + YBUG(); + return YAFFS_FAIL; + } + + if (nObjects < 1) + return YAFFS_OK; + + /* make these things */ + newObjects = YMALLOC(nObjects * sizeof(yaffs_Object)); + list = YMALLOC(sizeof(yaffs_ObjectList)); + + if (!newObjects || !list) { + if (newObjects){ + YFREE(newObjects); + newObjects = NULL; + } + if (list){ + YFREE(list); + list = NULL; + } + T(YAFFS_TRACE_ALLOCATE, + (TSTR("yaffs: Could not allocate more objects" TENDSTR))); + return YAFFS_FAIL; + } + + /* Hook them into the free list */ + for (i = 0; i < nObjects - 1; i++) { + newObjects[i].siblings.next = + (struct ylist_head *)(&newObjects[i + 1]); + } + + newObjects[nObjects - 1].siblings.next = (void *)allocator->freeObjects; + allocator->freeObjects = newObjects; + allocator->nFreeObjects += nObjects; + allocator->nObjectsCreated += nObjects; + + /* Now add this bunch of Objects to a list for freeing up. */ + + list->objects = newObjects; + list->next = allocator->allocatedObjectList; + allocator->allocatedObjectList = list; + + return YAFFS_OK; +} + +yaffs_Object *yaffs_AllocateRawObject(yaffs_Device *dev) +{ + yaffs_Object *obj = NULL; + yaffs_Allocator *allocator = dev->allocator; + + if(!allocator) { + YBUG(); + return obj; + } + + /* If there are none left make more */ + if (!allocator->freeObjects) + yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS); + + if (allocator->freeObjects) { + obj = allocator->freeObjects; + allocator->freeObjects = + (yaffs_Object *) (allocator->freeObjects->siblings.next); + allocator->nFreeObjects--; + } + + return obj; +} + + +void yaffs_FreeRawObject(yaffs_Device *dev, yaffs_Object *obj) +{ + + yaffs_Allocator *allocator = dev->allocator; + + if(!allocator) + YBUG(); + else { + /* Link into the free list. */ + obj->siblings.next = (struct ylist_head *)(allocator->freeObjects); + allocator->freeObjects = obj; + allocator->nFreeObjects++; + } +} + +void yaffs_DeinitialiseRawTnodesAndObjects(yaffs_Device *dev) +{ + if(dev->allocator){ + yaffs_DeinitialiseRawTnodes(dev); + yaffs_DeinitialiseRawObjects(dev); + + YFREE(dev->allocator); + dev->allocator=NULL; + } else + YBUG(); +} + +void yaffs_InitialiseRawTnodesAndObjects(yaffs_Device *dev) +{ + yaffs_Allocator *allocator; + + if(!dev->allocator){ + allocator = YMALLOC(sizeof(yaffs_Allocator)); + if(allocator){ + dev->allocator = allocator; + yaffs_InitialiseRawTnodes(dev); + yaffs_InitialiseRawObjects(dev); + } + } else + YBUG(); +} + + +#endif diff --git a/fs/yaffs2/yaffs_allocator.h b/fs/yaffs2/yaffs_allocator.h new file mode 100644 index 00000000..b0a5d11b --- /dev/null +++ b/fs/yaffs2/yaffs_allocator.h @@ -0,0 +1,30 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +#ifndef __YAFFS_ALLOCATOR_H__ +#define __YAFFS_ALLOCATOR_H__ + +#include "yaffs_guts.h" + +void yaffs_InitialiseRawTnodesAndObjects(yaffs_Device *dev); +void yaffs_DeinitialiseRawTnodesAndObjects(yaffs_Device *dev); + +yaffs_Tnode *yaffs_AllocateRawTnode(yaffs_Device *dev); +void yaffs_FreeRawTnode(yaffs_Device *dev, yaffs_Tnode *tn); + +yaffs_Object *yaffs_AllocateRawObject(yaffs_Device *dev); +void yaffs_FreeRawObject(yaffs_Device *dev, yaffs_Object *obj); + +#endif diff --git a/fs/yaffs2/yaffs_bitmap.c b/fs/yaffs2/yaffs_bitmap.c new file mode 100644 index 00000000..c7e9e8c4 --- /dev/null +++ b/fs/yaffs2/yaffs_bitmap.c @@ -0,0 +1,105 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include "yaffs_bitmap.h" +#include "yaffs_trace.h" +/* + * Chunk bitmap manipulations + */ + +static Y_INLINE __u8 *yaffs_BlockBits(yaffs_Device *dev, int blk) +{ + if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) { + T(YAFFS_TRACE_ERROR, + (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR), + blk)); + YBUG(); + } + return dev->chunkBits + + (dev->chunkBitmapStride * (blk - dev->internalStartBlock)); +} + +void yaffs_VerifyChunkBitId(yaffs_Device *dev, int blk, int chunk) +{ + if (blk < dev->internalStartBlock || blk > dev->internalEndBlock || + chunk < 0 || chunk >= dev->param.nChunksPerBlock) { + T(YAFFS_TRACE_ERROR, + (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR), + blk, chunk)); + YBUG(); + } +} + +void yaffs_ClearChunkBits(yaffs_Device *dev, int blk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); + + memset(blkBits, 0, dev->chunkBitmapStride); +} + +void yaffs_ClearChunkBit(yaffs_Device *dev, int blk, int chunk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); + + yaffs_VerifyChunkBitId(dev, blk, chunk); + + blkBits[chunk / 8] &= ~(1 << (chunk & 7)); +} + +void yaffs_SetChunkBit(yaffs_Device *dev, int blk, int chunk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); + + yaffs_VerifyChunkBitId(dev, blk, chunk); + + blkBits[chunk / 8] |= (1 << (chunk & 7)); +} + +int yaffs_CheckChunkBit(yaffs_Device *dev, int blk, int chunk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); + yaffs_VerifyChunkBitId(dev, blk, chunk); + + return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0; +} + +int yaffs_StillSomeChunkBits(yaffs_Device *dev, int blk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); + int i; + for (i = 0; i < dev->chunkBitmapStride; i++) { + if (*blkBits) + return 1; + blkBits++; + } + return 0; +} + +int yaffs_CountChunkBits(yaffs_Device *dev, int blk) +{ + __u8 *blkBits = yaffs_BlockBits(dev, blk); + int i; + int n = 0; + for (i = 0; i < dev->chunkBitmapStride; i++) { + __u8 x = *blkBits; + while (x) { + if (x & 1) + n++; + x >>= 1; + } + + blkBits++; + } + return n; +} + diff --git a/fs/yaffs2/yaffs_bitmap.h b/fs/yaffs2/yaffs_bitmap.h new file mode 100644 index 00000000..00cca2c0 --- /dev/null +++ b/fs/yaffs2/yaffs_bitmap.h @@ -0,0 +1,33 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +/* + * Chunk bitmap manipulations + */ + +#ifndef __YAFFS_BITMAP_H__ +#define __YAFFS_BITMAP_H__ + +#include "yaffs_guts.h" + +void yaffs_VerifyChunkBitId(yaffs_Device *dev, int blk, int chunk); +void yaffs_ClearChunkBits(yaffs_Device *dev, int blk); +void yaffs_ClearChunkBit(yaffs_Device *dev, int blk, int chunk); +void yaffs_SetChunkBit(yaffs_Device *dev, int blk, int chunk); +int yaffs_CheckChunkBit(yaffs_Device *dev, int blk, int chunk); +int yaffs_StillSomeChunkBits(yaffs_Device *dev, int blk); +int yaffs_CountChunkBits(yaffs_Device *dev, int blk); + +#endif diff --git a/fs/yaffs2/yaffs_linux.h b/fs/yaffs2/yaffs_linux.h new file mode 100644 index 00000000..ce059fd2 --- /dev/null +++ b/fs/yaffs2/yaffs_linux.h @@ -0,0 +1,43 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +#ifndef __YAFFS_LINUX_H__ +#define __YAFFS_LINUX_H__ + +#include "devextras.h" +#include "yportenv.h" + +struct yaffs_LinuxContext { + struct ylist_head contextList; /* List of these we have mounted */ + struct yaffs_DeviceStruct *dev; + struct super_block * superBlock; + struct task_struct *bgThread; /* Background thread for this device */ + int bgRunning; + struct semaphore grossLock; /* Gross locking semaphore */ + __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer + * at compile time so we have to allocate it. + */ + struct ylist_head searchContexts; + void (*putSuperFunc)(struct super_block *sb); + + struct task_struct *readdirProcess; + unsigned mount_id; +}; + +#define yaffs_DeviceToLC(dev) ((struct yaffs_LinuxContext *)((dev)->osContext)) +#define yaffs_DeviceToMtd(dev) ((struct mtd_info *)((dev)->driverContext)) + +#endif + diff --git a/fs/yaffs2/yaffs_linux_allocator.c b/fs/yaffs2/yaffs_linux_allocator.c new file mode 100644 index 00000000..e91782a1 --- /dev/null +++ b/fs/yaffs2/yaffs_linux_allocator.c @@ -0,0 +1,202 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +/* + * Note: Tis code is currently unused. Being checked in in case it becomes useful. + */ + + +#include "yaffs_allocator.h" +#include "yaffs_guts.h" +#include "yaffs_trace.h" +#include "yportenv.h" +#include "yaffs_linux.h" +/* + * Start out with the same allocator as yaffs direct. + * Todo: Change to Linux slab allocator. + */ + + + +#define NAMELEN 20 +struct yaffs_AllocatorStruct { + char tnode_name[NAMELEN+1]; + char object_name[NAMELEN+1]; + struct kmem_cache *tnode_cache; + struct kmem_cache *object_cache; +}; + +typedef struct yaffs_AllocatorStruct yaffs_Allocator; + +int mount_id; + +void yaffs_DeinitialiseRawTnodesAndObjects(yaffs_Device *dev) +{ + yaffs_Allocator *allocator = (yaffs_Allocator *)dev->allocator; + + T(YAFFS_TRACE_ALLOCATE,(TSTR("Deinitialising yaffs allocator\n"))); + + if(allocator){ + if(allocator->tnode_cache){ + kmem_cache_destroy(allocator->tnode_cache); + allocator->tnode_cache = NULL; + } else { + T(YAFFS_TRACE_ALWAYS, + (TSTR("NULL tnode cache\n"))); + YBUG(); + } + + if(allocator->object_cache){ + kmem_cache_destroy(allocator->object_cache); + allocator->object_cache = NULL; + } else { + T(YAFFS_TRACE_ALWAYS, + (TSTR("NULL object cache\n"))); + YBUG(); + } + + YFREE(allocator); + + } else { + T(YAFFS_TRACE_ALWAYS, + (TSTR("Deinitialising NULL allocator\n"))); + YBUG(); + } + dev->allocator = NULL; +} + + +static void fake_ctor0(void *data){data = data;} +static void fake_ctor1(void *data){data = data;} +static void fake_ctor2(void *data){data = data;} +static void fake_ctor3(void *data){data = data;} +static void fake_ctor4(void *data){data = data;} +static void fake_ctor5(void *data){data = data;} +static void fake_ctor6(void *data){data = data;} +static void fake_ctor7(void *data){data = data;} +static void fake_ctor8(void *data){data = data;} +static void fake_ctor9(void *data){data = data;} + +static void (*fake_ctor_list[10]) (void *) = { + fake_ctor0, + fake_ctor1, + fake_ctor2, + fake_ctor3, + fake_ctor4, + fake_ctor5, + fake_ctor6, + fake_ctor7, + fake_ctor8, + fake_ctor9, +}; + +void yaffs_InitialiseRawTnodesAndObjects(yaffs_Device *dev) +{ + yaffs_Allocator *allocator; + unsigned mount_id = yaffs_DeviceToLC(dev)->mount_id; + + T(YAFFS_TRACE_ALLOCATE,(TSTR("Initialising yaffs allocator\n"))); + + if(dev->allocator) + YBUG(); + else if(mount_id >= 10){ + T(YAFFS_TRACE_ALWAYS,(TSTR("Bad mount_id %u\n"),mount_id)); + } else { + allocator = YMALLOC(sizeof(yaffs_Allocator)); + memset(allocator,0,sizeof(yaffs_Allocator)); + dev->allocator = allocator; + + if(!dev->allocator){ + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs allocator creation failed\n"))); + YBUG(); + return; + + } + + sprintf(allocator->tnode_name,"yaffs_t_%u",mount_id); + sprintf(allocator->object_name,"yaffs_o_%u",mount_id); + + allocator->tnode_cache = + kmem_cache_create(allocator->tnode_name, + dev->tnodeSize, + 0, 0, + fake_ctor_list[mount_id]); + if(allocator->tnode_cache) + T(YAFFS_TRACE_ALLOCATE, + (TSTR("tnode cache \"%s\" %p\n"), + allocator->tnode_name,allocator->tnode_cache)); + else { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs cache creation failed\n"))); + YBUG(); + } + + + allocator->object_cache = + kmem_cache_create(allocator->object_name, + sizeof(yaffs_Object), + 0, 0, + fake_ctor_list[mount_id]); + + if(allocator->object_cache) + T(YAFFS_TRACE_ALLOCATE, + (TSTR("object cache \"%s\" %p\n"), + allocator->object_name,allocator->object_cache)); + + else { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs cache creation failed\n"))); + YBUG(); + } + } +} + + +yaffs_Tnode *yaffs_AllocateRawTnode(yaffs_Device *dev) +{ + yaffs_Allocator *allocator = dev->allocator; + if(!allocator || !allocator->tnode_cache){ + YBUG(); + return NULL; + } + return kmem_cache_alloc(allocator->tnode_cache, GFP_NOFS); +} + +void yaffs_FreeRawTnode(yaffs_Device *dev, yaffs_Tnode *tn) +{ + yaffs_Allocator *allocator = dev->allocator; + kmem_cache_free(allocator->tnode_cache,tn); +} + +yaffs_Object *yaffs_AllocateRawObject(yaffs_Device *dev) +{ + yaffs_Allocator *allocator = dev->allocator; + if(!allocator){ + YBUG(); + return NULL; + } + if(!allocator->object_cache){ + YBUG(); + return NULL; + } + return kmem_cache_alloc(allocator->object_cache, GFP_NOFS); +} + +void yaffs_FreeRawObject(yaffs_Device *dev, yaffs_Object *obj) +{ + yaffs_Allocator *allocator = dev->allocator; + kmem_cache_free(allocator->object_cache,obj); +} diff --git a/fs/yaffs2/yaffs_list.h b/fs/yaffs2/yaffs_list.h new file mode 100644 index 00000000..09d80b85 --- /dev/null +++ b/fs/yaffs2/yaffs_list.h @@ -0,0 +1,127 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +/* + * This file is just holds extra declarations of macros that would normally + * be providesd in the Linux kernel. These macros have been written from + * scratch but are functionally equivalent to the Linux ones. + * + */ + +#ifndef __YAFFS_LIST_H__ +#define __YAFFS_LIST_H__ + + +#include "yportenv.h" + +/* + * This is a simple doubly linked list implementation that matches the + * way the Linux kernel doubly linked list implementation works. + */ + +struct ylist_head { + struct ylist_head *next; /* next in chain */ + struct ylist_head *prev; /* previous in chain */ +}; + + +/* Initialise a static list */ +#define YLIST_HEAD(name) \ +struct ylist_head name = { &(name), &(name)} + + + +/* Initialise a list head to an empty list */ +#define YINIT_LIST_HEAD(p) \ +do { \ + (p)->next = (p);\ + (p)->prev = (p); \ +} while (0) + + +/* Add an element to a list */ +static Y_INLINE void ylist_add(struct ylist_head *newEntry, + struct ylist_head *list) +{ + struct ylist_head *listNext = list->next; + + list->next = newEntry; + newEntry->prev = list; + newEntry->next = listNext; + listNext->prev = newEntry; + +} + +static Y_INLINE void ylist_add_tail(struct ylist_head *newEntry, + struct ylist_head *list) +{ + struct ylist_head *listPrev = list->prev; + + list->prev = newEntry; + newEntry->next = list; + newEntry->prev = listPrev; + listPrev->next = newEntry; + +} + + +/* Take an element out of its current list, with or without + * reinitialising the links.of the entry*/ +static Y_INLINE void ylist_del(struct ylist_head *entry) +{ + struct ylist_head *listNext = entry->next; + struct ylist_head *listPrev = entry->prev; + + listNext->prev = listPrev; + listPrev->next = listNext; + +} + +static Y_INLINE void ylist_del_init(struct ylist_head *entry) +{ + ylist_del(entry); + entry->next = entry->prev = entry; +} + + +/* Test if the list is empty */ +static Y_INLINE int ylist_empty(struct ylist_head *entry) +{ + return (entry->next == entry); +} + + +/* ylist_entry takes a pointer to a list entry and offsets it to that + * we can find a pointer to the object it is embedded in. + */ + + +#define ylist_entry(entry, type, member) \ + ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member))) + + +/* ylist_for_each and list_for_each_safe iterate over lists. + * ylist_for_each_safe uses temporary storage to make the list delete safe + */ + +#define ylist_for_each(itervar, list) \ + for (itervar = (list)->next; itervar != (list); itervar = itervar->next) + +#define ylist_for_each_safe(itervar, saveVar, list) \ + for (itervar = (list)->next, saveVar = (list)->next->next; \ + itervar != (list); itervar = saveVar, saveVar = saveVar->next) + + +#endif diff --git a/fs/yaffs2/yaffs_nameval.c b/fs/yaffs2/yaffs_nameval.c new file mode 100644 index 00000000..a4ed2973 --- /dev/null +++ b/fs/yaffs2/yaffs_nameval.c @@ -0,0 +1,197 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* + * This simple implementation of a name-value store assumes a small number of values and fits + * into a small finite buffer. + * + * Each attribute is stored as a record: + * sizeof(int) bytes record size. + * strnlen+1 bytes name null terminated. + * nbytes value. + * ---------- + * total size stored in record size + * + * This code has not been tested with unicode yet. + */ + + +#include "yaffs_nameval.h" + +#include "yportenv.h" + +static int nval_find(const char *xb, int xb_size, const YCHAR *name, + int *exist_size) +{ + int pos=0; + int size; + + memcpy(&size,xb,sizeof(int)); + while(size > 0 && (size < xb_size) && (pos + size < xb_size)){ + if(yaffs_strncmp((YCHAR *)(xb+pos+sizeof(int)),name,size) == 0){ + if(exist_size) + *exist_size = size; + return pos; + } + pos += size; + if(pos < xb_size -sizeof(int)) + memcpy(&size,xb + pos,sizeof(int)); + else + size = 0; + } + if(exist_size) + *exist_size = 0; + return -1; +} + +static int nval_used(const char *xb, int xb_size) +{ + int pos=0; + int size; + + memcpy(&size,xb + pos,sizeof(int)); + while(size > 0 && (size < xb_size) && (pos + size < xb_size)){ + pos += size; + if(pos < xb_size -sizeof(int)) + memcpy(&size,xb + pos,sizeof(int)); + else + size = 0; + } + return pos; +} + +int nval_del(char *xb, int xb_size, const YCHAR *name) +{ + int pos = nval_find(xb, xb_size, name, NULL); + int size; + + if(pos >= 0 && pos < xb_size){ + /* Find size, shift rest over this record, then zero out the rest of buffer */ + memcpy(&size,xb+pos,sizeof(int)); + memcpy(xb + pos, xb + pos + size, xb_size - (pos + size)); + memset(xb + (xb_size - size),0,size); + return 0; + } else + return -ENODATA; +} + +int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags) +{ + int pos; + int namelen = yaffs_strnlen(name,xb_size); + int reclen; + int size_exist = 0; + int space; + int start; + + pos = nval_find(xb,xb_size,name, &size_exist); + + if(flags & XATTR_CREATE && pos >= 0) + return -EEXIST; + if(flags & XATTR_REPLACE && pos < 0) + return -ENODATA; + + start = nval_used(xb,xb_size); + space = xb_size - start + size_exist; + + reclen = (sizeof(int) + namelen + 1 + bsize); + + if(reclen > space) + return -ENOSPC; + + if(pos >= 0){ + nval_del(xb,xb_size,name); + start = nval_used(xb, xb_size); + } + + pos = start; + + memcpy(xb + pos,&reclen,sizeof(int)); + pos +=sizeof(int); + yaffs_strncpy((YCHAR *)(xb + pos), name, reclen); + pos+= (namelen+1); + memcpy(xb + pos,buf,bsize); + return 0; +} + +int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsize) +{ + int pos = nval_find(xb,xb_size,name,NULL); + int size; + + if(pos >= 0 && pos< xb_size){ + + memcpy(&size,xb +pos,sizeof(int)); + pos+=sizeof(int); /* advance past record length */ + size -= sizeof(int); + + /* Advance over name string */ + while(xb[pos] && size > 0 && pos < xb_size){ + pos++; + size--; + } + /*Advance over NUL */ + pos++; + size--; + + if(size <= bsize){ + memcpy(buf,xb + pos,size); + return size; + } + + } + if(pos >= 0) + return -ERANGE; + else + return -ENODATA; +} + +int nval_list(const char *xb, int xb_size, char *buf, int bsize) +{ + int pos = 0; + int size; + int name_len; + int ncopied = 0; + int filled = 0; + + memcpy(&size,xb + pos,sizeof(int)); + while(size > sizeof(int) && size <= xb_size && (pos + size) < xb_size && !filled){ + pos+= sizeof(int); + size-=sizeof(int); + name_len = yaffs_strnlen((YCHAR *)(xb + pos), size); + if(ncopied + name_len + 1 < bsize){ + memcpy(buf,xb+pos,name_len * sizeof(YCHAR)); + buf+= name_len; + *buf = '\0'; + buf++; + if(sizeof(YCHAR) > 1){ + *buf = '\0'; + buf++; + } + ncopied += (name_len+1); + } else + filled = 1; + pos+=size; + if(pos < xb_size -sizeof(int)) + memcpy(&size,xb + pos,sizeof(int)); + else + size = 0; + } + return ncopied; +} + + +int nval_hasvalues(const char *xb, int xb_size) +{ + return nval_used(xb, xb_size) > 0; +} diff --git a/fs/yaffs2/yaffs_nameval.h b/fs/yaffs2/yaffs_nameval.h new file mode 100644 index 00000000..bd808593 --- /dev/null +++ b/fs/yaffs2/yaffs_nameval.h @@ -0,0 +1,26 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +#ifndef __NAMEVAL_H__ +#define __NAMEVAL_H__ + +#include "yportenv.h" + +int nval_del(char *xb, int xb_size, const YCHAR *name); +int nval_set(char *xb, int xb_size, const YCHAR *name, const char *buf, int bsize, int flags); +int nval_get(const char *xb, int xb_size, const YCHAR *name, char *buf, int bsize); +int nval_list(const char *xb, int xb_size, char *buf, int bsize); +int nval_hasvalues(const char *xb, int xb_size); +#endif diff --git a/fs/yaffs2/yaffs_trace.h b/fs/yaffs2/yaffs_trace.h new file mode 100644 index 00000000..8b848edb --- /dev/null +++ b/fs/yaffs2/yaffs_trace.h @@ -0,0 +1,60 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + + +#ifndef __YTRACE_H__ +#define __YTRACE_H__ + +extern unsigned int yaffs_traceMask; +extern unsigned int yaffs_wr_attempts; + +/* + * Tracing flags. + * The flags masked in YAFFS_TRACE_ALWAYS are always traced. + */ + +#define YAFFS_TRACE_OS 0x00000002 +#define YAFFS_TRACE_ALLOCATE 0x00000004 +#define YAFFS_TRACE_SCAN 0x00000008 +#define YAFFS_TRACE_BAD_BLOCKS 0x00000010 +#define YAFFS_TRACE_ERASE 0x00000020 +#define YAFFS_TRACE_GC 0x00000040 +#define YAFFS_TRACE_WRITE 0x00000080 +#define YAFFS_TRACE_TRACING 0x00000100 +#define YAFFS_TRACE_DELETION 0x00000200 +#define YAFFS_TRACE_BUFFERS 0x00000400 +#define YAFFS_TRACE_NANDACCESS 0x00000800 +#define YAFFS_TRACE_GC_DETAIL 0x00001000 +#define YAFFS_TRACE_SCAN_DEBUG 0x00002000 +#define YAFFS_TRACE_MTD 0x00004000 +#define YAFFS_TRACE_CHECKPOINT 0x00008000 + +#define YAFFS_TRACE_VERIFY 0x00010000 +#define YAFFS_TRACE_VERIFY_NAND 0x00020000 +#define YAFFS_TRACE_VERIFY_FULL 0x00040000 +#define YAFFS_TRACE_VERIFY_ALL 0x000F0000 + +#define YAFFS_TRACE_SYNC 0x00100000 +#define YAFFS_TRACE_BACKGROUND 0x00200000 +#define YAFFS_TRACE_LOCK 0x00400000 + +#define YAFFS_TRACE_ERROR 0x40000000 +#define YAFFS_TRACE_BUG 0x80000000 +#define YAFFS_TRACE_ALWAYS 0xF0000000 + + +#define T(mask, p) do { if ((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0) + +#endif diff --git a/fs/yaffs2/yaffs_verify.c b/fs/yaffs2/yaffs_verify.c new file mode 100644 index 00000000..a600aa6b --- /dev/null +++ b/fs/yaffs2/yaffs_verify.c @@ -0,0 +1,626 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + + +#include "yaffs_verify.h" +#include "yaffs_trace.h" +#include "yaffs_bitmap.h" +#include "yaffs_getblockinfo.h" +#include "yaffs_nand.h" + +int yaffs_SkipVerification(yaffs_Device *dev) +{ + dev=dev; + return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL)); +} + +static int yaffs_SkipFullVerification(yaffs_Device *dev) +{ + dev=dev; + return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_FULL)); +} + +static int yaffs_SkipNANDVerification(yaffs_Device *dev) +{ + dev=dev; + return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_NAND)); +} + + +static const char *blockStateName[] = { +"Unknown", +"Needs scanning", +"Scanning", +"Empty", +"Allocating", +"Full", +"Dirty", +"Checkpoint", +"Collecting", +"Dead" +}; + + +void yaffs_VerifyBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, int n) +{ + int actuallyUsed; + int inUse; + + if (yaffs_SkipVerification(dev)) + return; + + /* Report illegal runtime states */ + if (bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES) + T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has undefined state %d"TENDSTR), n, bi->blockState)); + + switch (bi->blockState) { + case YAFFS_BLOCK_STATE_UNKNOWN: + case YAFFS_BLOCK_STATE_SCANNING: + case YAFFS_BLOCK_STATE_NEEDS_SCANNING: + T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has bad run-state %s"TENDSTR), + n, blockStateName[bi->blockState])); + } + + /* Check pages in use and soft deletions are legal */ + + actuallyUsed = bi->pagesInUse - bi->softDeletions; + + if (bi->pagesInUse < 0 || bi->pagesInUse > dev->param.nChunksPerBlock || + bi->softDeletions < 0 || bi->softDeletions > dev->param.nChunksPerBlock || + actuallyUsed < 0 || actuallyUsed > dev->param.nChunksPerBlock) + T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR), + n, bi->pagesInUse, bi->softDeletions)); + + + /* Check chunk bitmap legal */ + inUse = yaffs_CountChunkBits(dev, n); + if (inUse != bi->pagesInUse) + T(YAFFS_TRACE_VERIFY, (TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR), + n, bi->pagesInUse, inUse)); + +} + + + +void yaffs_VerifyCollectedBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, int n) +{ + yaffs_VerifyBlock(dev, bi, n); + + /* After collection the block should be in the erased state */ + + if (bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && + bi->blockState != YAFFS_BLOCK_STATE_EMPTY) { + T(YAFFS_TRACE_ERROR, (TSTR("Block %d is in state %d after gc, should be erased"TENDSTR), + n, bi->blockState)); + } +} + +void yaffs_VerifyBlocks(yaffs_Device *dev) +{ + int i; + int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES]; + int nIllegalBlockStates = 0; + + if (yaffs_SkipVerification(dev)) + return; + + memset(nBlocksPerState, 0, sizeof(nBlocksPerState)); + + for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { + yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, i); + yaffs_VerifyBlock(dev, bi, i); + + if (bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES) + nBlocksPerState[bi->blockState]++; + else + nIllegalBlockStates++; + } + + T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); + T(YAFFS_TRACE_VERIFY, (TSTR("Block summary"TENDSTR))); + + T(YAFFS_TRACE_VERIFY, (TSTR("%d blocks have illegal states"TENDSTR), nIllegalBlockStates)); + if (nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1) + T(YAFFS_TRACE_VERIFY, (TSTR("Too many allocating blocks"TENDSTR))); + + for (i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++) + T(YAFFS_TRACE_VERIFY, + (TSTR("%s %d blocks"TENDSTR), + blockStateName[i], nBlocksPerState[i])); + + if (dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]) + T(YAFFS_TRACE_VERIFY, + (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR), + dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])); + + if (dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]) + T(YAFFS_TRACE_VERIFY, + (TSTR("Erased block count wrong dev %d count %d"TENDSTR), + dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])); + + if (nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1) + T(YAFFS_TRACE_VERIFY, + (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR), + nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING])); + + T(YAFFS_TRACE_VERIFY, (TSTR(""TENDSTR))); + +} + +/* + * Verify the object header. oh must be valid, but obj and tags may be NULL in which + * case those tests will not be performed. + */ +void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck) +{ + if (obj && yaffs_SkipVerification(obj->myDev)) + return; + + if (!(tags && obj && oh)) { + T(YAFFS_TRACE_VERIFY, + (TSTR("Verifying object header tags %p obj %p oh %p"TENDSTR), + tags, obj, oh)); + return; + } + + if (oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN || + oh->type > YAFFS_OBJECT_TYPE_MAX) + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR), + tags->objectId, oh->type)); + + if (tags->objectId != obj->objectId) + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d header mismatch objectId %d"TENDSTR), + tags->objectId, obj->objectId)); + + + /* + * Check that the object's parent ids match if parentCheck requested. + * + * Tests do not apply to the root object. + */ + + if (parentCheck && tags->objectId > 1 && !obj->parent) + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR), + tags->objectId, oh->parentObjectId)); + + if (parentCheck && obj->parent && + oh->parentObjectId != obj->parent->objectId && + (oh->parentObjectId != YAFFS_OBJECTID_UNLINKED || + obj->parent->objectId != YAFFS_OBJECTID_DELETED)) + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR), + tags->objectId, oh->parentObjectId, obj->parent->objectId)); + + if (tags->objectId > 1 && oh->name[0] == 0) /* Null name */ + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d header name is NULL"TENDSTR), + obj->objectId)); + + if (tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */ + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d header name is 0xFF"TENDSTR), + obj->objectId)); +} + + +#if 0 +/* Not being used, but don't want to throw away yet */ +int yaffs_VerifyTnodeWorker(yaffs_Object *obj, yaffs_Tnode *tn, + __u32 level, int chunkOffset) +{ + int i; + yaffs_Device *dev = obj->myDev; + int ok = 1; + + if (tn) { + if (level > 0) { + + for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { + if (tn->internal[i]) { + ok = yaffs_VerifyTnodeWorker(obj, + tn->internal[i], + level - 1, + (chunkOffset<objectId; + + chunkOffset <<= YAFFS_TNODES_LEVEL0_BITS; + + for (i = 0; i < YAFFS_NTNODES_LEVEL0; i++) { + __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i); + + if (theChunk > 0) { + /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */ + yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags); + if (tags.objectId != objectId || tags.chunkId != chunkOffset) { + T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), + objectId, chunkOffset, theChunk, + tags.objectId, tags.chunkId)); + } + } + chunkOffset++; + } + } + } + + return ok; + +} + +#endif + +void yaffs_VerifyFile(yaffs_Object *obj) +{ + int requiredTallness; + int actualTallness; + __u32 lastChunk; + __u32 x; + __u32 i; + yaffs_Device *dev; + yaffs_ExtendedTags tags; + yaffs_Tnode *tn; + __u32 objectId; + + if (!obj) + return; + + if (yaffs_SkipVerification(obj->myDev)) + return; + + dev = obj->myDev; + objectId = obj->objectId; + + /* Check file size is consistent with tnode depth */ + lastChunk = obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1; + x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS; + requiredTallness = 0; + while (x > 0) { + x >>= YAFFS_TNODES_INTERNAL_BITS; + requiredTallness++; + } + + actualTallness = obj->variant.fileVariant.topLevel; + + /* Check that the chunks in the tnode tree are all correct. + * We do this by scanning through the tnode tree and + * checking the tags for every chunk match. + */ + + if (yaffs_SkipNANDVerification(dev)) + return; + + for (i = 1; i <= lastChunk; i++) { + tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant, i); + + if (tn) { + __u32 theChunk = yaffs_GetChunkGroupBase(dev, tn, i); + if (theChunk > 0) { + /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),objectId,i,theChunk)); */ + yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL, &tags); + if (tags.objectId != objectId || tags.chunkId != i) { + T(~0, (TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR), + objectId, i, theChunk, + tags.objectId, tags.chunkId)); + } + } + } + } +} + + +void yaffs_VerifyHardLink(yaffs_Object *obj) +{ + if (obj && yaffs_SkipVerification(obj->myDev)) + return; + + /* Verify sane equivalent object */ +} + +void yaffs_VerifySymlink(yaffs_Object *obj) +{ + if (obj && yaffs_SkipVerification(obj->myDev)) + return; + + /* Verify symlink string */ +} + +void yaffs_VerifySpecial(yaffs_Object *obj) +{ + if (obj && yaffs_SkipVerification(obj->myDev)) + return; +} + +void yaffs_VerifyObject(yaffs_Object *obj) +{ + yaffs_Device *dev; + + __u32 chunkMin; + __u32 chunkMax; + + __u32 chunkIdOk; + __u32 chunkInRange; + __u32 chunkShouldNotBeDeleted; + __u32 chunkValid; + + if (!obj) + return; + + if (obj->beingCreated) + return; + + dev = obj->myDev; + + if (yaffs_SkipVerification(dev)) + return; + + /* Check sane object header chunk */ + + chunkMin = dev->internalStartBlock * dev->param.nChunksPerBlock; + chunkMax = (dev->internalEndBlock+1) * dev->param.nChunksPerBlock - 1; + + chunkInRange = (((unsigned)(obj->hdrChunk)) >= chunkMin && ((unsigned)(obj->hdrChunk)) <= chunkMax); + chunkIdOk = chunkInRange || (obj->hdrChunk == 0); + chunkValid = chunkInRange && + yaffs_CheckChunkBit(dev, + obj->hdrChunk / dev->param.nChunksPerBlock, + obj->hdrChunk % dev->param.nChunksPerBlock); + chunkShouldNotBeDeleted = chunkInRange && !chunkValid; + + if (!obj->fake && + (!chunkIdOk || chunkShouldNotBeDeleted)) { + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d has chunkId %d %s %s"TENDSTR), + obj->objectId, obj->hdrChunk, + chunkIdOk ? "" : ",out of range", + chunkShouldNotBeDeleted ? ",marked as deleted" : "")); + } + + if (chunkValid && !yaffs_SkipNANDVerification(dev)) { + yaffs_ExtendedTags tags; + yaffs_ObjectHeader *oh; + __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__); + + oh = (yaffs_ObjectHeader *)buffer; + + yaffs_ReadChunkWithTagsFromNAND(dev, obj->hdrChunk, buffer, + &tags); + + yaffs_VerifyObjectHeader(obj, oh, &tags, 1); + + yaffs_ReleaseTempBuffer(dev, buffer, __LINE__); + } + + /* Verify it has a parent */ + if (obj && !obj->fake && + (!obj->parent || obj->parent->myDev != dev)) { + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR), + obj->objectId, obj->parent)); + } + + /* Verify parent is a directory */ + if (obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR), + obj->objectId, obj->parent->variantType)); + } + + switch (obj->variantType) { + case YAFFS_OBJECT_TYPE_FILE: + yaffs_VerifyFile(obj); + break; + case YAFFS_OBJECT_TYPE_SYMLINK: + yaffs_VerifySymlink(obj); + break; + case YAFFS_OBJECT_TYPE_DIRECTORY: + yaffs_VerifyDirectory(obj); + break; + case YAFFS_OBJECT_TYPE_HARDLINK: + yaffs_VerifyHardLink(obj); + break; + case YAFFS_OBJECT_TYPE_SPECIAL: + yaffs_VerifySpecial(obj); + break; + case YAFFS_OBJECT_TYPE_UNKNOWN: + default: + T(YAFFS_TRACE_VERIFY, + (TSTR("Obj %d has illegaltype %d"TENDSTR), + obj->objectId, obj->variantType)); + break; + } +} + +void yaffs_VerifyObjects(yaffs_Device *dev) +{ + yaffs_Object *obj; + int i; + struct ylist_head *lh; + + if (yaffs_SkipVerification(dev)) + return; + + /* Iterate through the objects in each hash entry */ + + for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) { + ylist_for_each(lh, &dev->objectBucket[i].list) { + if (lh) { + obj = ylist_entry(lh, yaffs_Object, hashLink); + yaffs_VerifyObject(obj); + } + } + } +} + + +void yaffs_VerifyObjectInDirectory(yaffs_Object *obj) +{ + struct ylist_head *lh; + yaffs_Object *listObj; + + int count = 0; + + if (!obj) { + T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR))); + YBUG(); + return; + } + + if (yaffs_SkipVerification(obj->myDev)) + return; + + if (!obj->parent) { + T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR))); + YBUG(); + return; + } + + if (obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { + T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR))); + YBUG(); + } + + /* Iterate through the objects in each hash entry */ + + ylist_for_each(lh, &obj->parent->variant.directoryVariant.children) { + if (lh) { + listObj = ylist_entry(lh, yaffs_Object, siblings); + yaffs_VerifyObject(listObj); + if (obj == listObj) + count++; + } + } + + if (count != 1) { + T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR), count)); + YBUG(); + } +} + +void yaffs_VerifyDirectory(yaffs_Object *directory) +{ + struct ylist_head *lh; + yaffs_Object *listObj; + + if (!directory) { + YBUG(); + return; + } + + if (yaffs_SkipFullVerification(directory->myDev)) + return; + + if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { + T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR), directory->variantType)); + YBUG(); + } + + /* Iterate through the objects in each hash entry */ + + ylist_for_each(lh, &directory->variant.directoryVariant.children) { + if (lh) { + listObj = ylist_entry(lh, yaffs_Object, siblings); + if (listObj->parent != directory) { + T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR), listObj->parent)); + YBUG(); + } + yaffs_VerifyObjectInDirectory(listObj); + } + } +} + +static int yaffs_freeVerificationFailures; + +void yaffs_VerifyFreeChunks(yaffs_Device *dev) +{ + int counted; + int difference; + + if (yaffs_SkipVerification(dev)) + return; + + counted = yaffs_CountFreeChunks(dev); + + difference = dev->nFreeChunks - counted; + + if (difference) { + T(YAFFS_TRACE_ALWAYS, + (TSTR("Freechunks verification failure %d %d %d" TENDSTR), + dev->nFreeChunks, counted, difference)); + yaffs_freeVerificationFailures++; + } +} + +int yaffs_VerifyFileSanity(yaffs_Object *in) +{ +#if 0 + int chunk; + int nChunks; + int fSize; + int failed = 0; + int objId; + yaffs_Tnode *tn; + yaffs_Tags localTags; + yaffs_Tags *tags = &localTags; + int theChunk; + int chunkDeleted; + + if (in->variantType != YAFFS_OBJECT_TYPE_FILE) + return YAFFS_FAIL; + + objId = in->objectId; + fSize = in->variant.fileVariant.fileSize; + nChunks = + (fSize + in->myDev->nDataBytesPerChunk - 1) / in->myDev->nDataBytesPerChunk; + + for (chunk = 1; chunk <= nChunks; chunk++) { + tn = yaffs_FindLevel0Tnode(in->myDev, &in->variant.fileVariant, + chunk); + + if (tn) { + + theChunk = yaffs_GetChunkGroupBase(dev, tn, chunk); + + if (yaffs_CheckChunkBits + (dev, theChunk / dev->param.nChunksPerBlock, + theChunk % dev->param.nChunksPerBlock)) { + + yaffs_ReadChunkTagsFromNAND(in->myDev, theChunk, + tags, + &chunkDeleted); + if (yaffs_TagsMatch + (tags, in->objectId, chunk, chunkDeleted)) { + /* found it; */ + + } + } else { + + failed = 1; + } + + } else { + /* T(("No level 0 found for %d\n", chunk)); */ + } + } + + return failed ? YAFFS_FAIL : YAFFS_OK; +#else + in=in; + return YAFFS_OK; +#endif +} diff --git a/fs/yaffs2/yaffs_verify.h b/fs/yaffs2/yaffs_verify.h new file mode 100644 index 00000000..3dbcefd1 --- /dev/null +++ b/fs/yaffs2/yaffs_verify.h @@ -0,0 +1,41 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +#ifndef __YAFFS_VERIFY_H__ +#define __YAFFS_VERIFY_H__ + +#include "yaffs_guts.h" + +void yaffs_VerifyBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, int n); +void yaffs_VerifyCollectedBlock(yaffs_Device *dev, yaffs_BlockInfo *bi, int n); +void yaffs_VerifyBlocks(yaffs_Device *dev); + +void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck); +void yaffs_VerifyFile(yaffs_Object *obj); +void yaffs_VerifyHardLink(yaffs_Object *obj); +void yaffs_VerifySymlink(yaffs_Object *obj); +void yaffs_VerifySpecial(yaffs_Object *obj); +void yaffs_VerifyObject(yaffs_Object *obj); +void yaffs_VerifyObjects(yaffs_Device *dev); +void yaffs_VerifyObjectInDirectory(yaffs_Object *obj); +void yaffs_VerifyDirectory(yaffs_Object *directory); +void yaffs_VerifyFreeChunks(yaffs_Device *dev); + +int yaffs_VerifyFileSanity(yaffs_Object *obj); + +int yaffs_SkipVerification(yaffs_Device *dev); + +#endif + diff --git a/fs/yaffs2/yaffs_vfs_glue.c b/fs/yaffs2/yaffs_vfs_glue.c new file mode 100644 index 00000000..c61da67d --- /dev/null +++ b/fs/yaffs2/yaffs_vfs_glue.c @@ -0,0 +1,3577 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * Acknowledgements: + * Luc van OostenRyck for numerous patches. + * Nick Bane for numerous patches. + * Nick Bane for 2.5/2.6 integration. + * Andras Toth for mknod rdev issue. + * Michael Fischer for finding the problem with inode inconsistency. + * Some code bodily lifted from JFFS + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +/* + * + * This is the file system front-end to YAFFS that hooks it up to + * the VFS. + * + * Special notes: + * >> 2.4: sb->u.generic_sbp points to the yaffs_Device associated with + * this superblock + * >> 2.6: sb->s_fs_info points to the yaffs_Device associated with this + * superblock + * >> inode->u.generic_ip points to the associated yaffs_Object. + */ + +/* + * There are two variants of the VFS glue code. This variant should compile + * for any version of Linux. + */ +#include + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 10)) +#define YAFFS_COMPILE_BACKGROUND +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6, 23)) +#define YAFFS_COMPILE_FREEZER +#endif +#endif + +#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)) +#define YAFFS_COMPILE_EXPORTFS +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35)) +#define YAFFS_USE_SETATTR_COPY +#define YAFFS_USE_TRUNCATE_SETSIZE +#endif +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,35)) +#define YAFFS_HAS_EVICT_INODE +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13)) +#define YAFFS_NEW_FOLLOW_LINK 1 +#else +#define YAFFS_NEW_FOLLOW_LINK 0 +#endif + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) +#include +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#if (YAFFS_NEW_FOLLOW_LINK == 1) +#include +#endif + +#ifdef YAFFS_COMPILE_EXPORTFS +#include +#endif + +#ifdef YAFFS_COMPILE_BACKGROUND +#include +#include +#endif +#ifdef YAFFS_COMPILE_FREEZER +#include +#endif + +#include + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + +#include + +#define UnlockPage(p) unlock_page(p) +#define Page_Uptodate(page) test_bit(PG_uptodate, &(page)->flags) + +/* FIXME: use sb->s_id instead ? */ +#define yaffs_devname(sb, buf) bdevname(sb->s_bdev, buf) + +#else + +#include +#define BDEVNAME_SIZE 0 +#define yaffs_devname(sb, buf) kdevname(sb->s_dev) + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 5, 0)) +/* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */ +#define __user +#endif + +#endif + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 26)) +#define YPROC_ROOT (&proc_root) +#else +#define YPROC_ROOT NULL +#endif + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26)) +#define Y_INIT_TIMER(a) init_timer(a) +#else +#define Y_INIT_TIMER(a) init_timer_on_stack(a) +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +#define WRITE_SIZE_STR "writesize" +#define WRITE_SIZE(mtd) ((mtd)->writesize) +#else +#define WRITE_SIZE_STR "oobblock" +#define WRITE_SIZE(mtd) ((mtd)->oobblock) +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 27)) +#define YAFFS_USE_WRITE_BEGIN_END 1 +#else +#define YAFFS_USE_WRITE_BEGIN_END 0 +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 28)) +static uint32_t YCALCBLOCKS(uint64_t partition_size, uint32_t block_size) +{ + uint64_t result = partition_size; + do_div(result, block_size); + return (uint32_t)result; +} +#else +#define YCALCBLOCKS(s, b) ((s)/(b)) +#endif + +#include +#include + +#include "yportenv.h" +#include "yaffs_trace.h" +#include "yaffs_guts.h" + +#include "yaffs_linux.h" + +#include "yaffs_mtdif.h" +#include "yaffs_mtdif1.h" +#include "yaffs_mtdif2.h" + +unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS | YAFFS_TRACE_ALWAYS; +unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS; +unsigned int yaffs_auto_checkpoint = 1; +unsigned int yaffs_gc_control = 1; +unsigned int yaffs_bg_enable = 1; + +/* Module Parameters */ +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +module_param(yaffs_traceMask, uint, 0644); +module_param(yaffs_wr_attempts, uint, 0644); +module_param(yaffs_auto_checkpoint, uint, 0644); +module_param(yaffs_gc_control, uint, 0644); +module_param(yaffs_bg_enable, uint, 0644); +#else +MODULE_PARM(yaffs_traceMask, "i"); +MODULE_PARM(yaffs_wr_attempts, "i"); +MODULE_PARM(yaffs_auto_checkpoint, "i"); +MODULE_PARM(yaffs_gc_control, "i"); +#endif + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 25)) +/* use iget and read_inode */ +#define Y_IGET(sb, inum) iget((sb), (inum)) +static void yaffs_read_inode(struct inode *inode); + +#else +/* Call local equivalent */ +#define YAFFS_USE_OWN_IGET +#define Y_IGET(sb, inum) yaffs_iget((sb), (inum)) + +static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino); +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) +#define yaffs_InodeToObjectLV(iptr) ((iptr)->i_private) +#else +#define yaffs_InodeToObjectLV(iptr) ((iptr)->u.generic_ip) +#endif + +#define yaffs_InodeToObject(iptr) ((yaffs_Object *)(yaffs_InodeToObjectLV(iptr))) +#define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode) + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->s_fs_info) +#else +#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->u.generic_sbp) +#endif + + +#define update_dir_time(dir) do {\ + (dir)->i_ctime = (dir)->i_mtime = CURRENT_TIME; \ + } while(0) + +static void yaffs_put_super(struct super_block *sb); + +static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, + loff_t *pos); +static ssize_t yaffs_hold_space(struct file *f); +static void yaffs_release_space(struct file *f); + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_file_flush(struct file *file, fl_owner_t id); +#else +static int yaffs_file_flush(struct file *file); +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34)) +static int yaffs_sync_object(struct file *file, int datasync); +#else +static int yaffs_sync_object(struct file *file, struct dentry *dentry, + int datasync); +#endif + +static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir); + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, + struct nameidata *n); +static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, + struct nameidata *n); +#else +static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode); +static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry); +#endif +static int yaffs_link(struct dentry *old_dentry, struct inode *dir, + struct dentry *dentry); +static int yaffs_unlink(struct inode *dir, struct dentry *dentry); +static int yaffs_symlink(struct inode *dir, struct dentry *dentry, + const char *symname); +static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode); + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, + dev_t dev); +#else +static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, + int dev); +#endif +static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, + struct inode *new_dir, struct dentry *new_dentry); +static int yaffs_setattr(struct dentry *dentry, struct iattr *attr); + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_sync_fs(struct super_block *sb, int wait); +static void yaffs_write_super(struct super_block *sb); +#else +static int yaffs_sync_fs(struct super_block *sb); +static int yaffs_write_super(struct super_block *sb); +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf); +#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf); +#else +static int yaffs_statfs(struct super_block *sb, struct statfs *buf); +#endif + +#ifdef YAFFS_HAS_PUT_INODE +static void yaffs_put_inode(struct inode *inode); +#endif + +#ifdef YAFFS_HAS_EVICT_INODE +static void yaffs_evict_inode(struct inode *); +#else +static void yaffs_delete_inode(struct inode *); +static void yaffs_clear_inode(struct inode *); +#endif + +static int yaffs_readpage(struct file *file, struct page *page); +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_writepage(struct page *page, struct writeback_control *wbc); +#else +static int yaffs_writepage(struct page *page); +#endif + +#ifdef CONFIG_YAFFS_XATTR +int yaffs_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags); +ssize_t yaffs_getxattr(struct dentry *dentry, const char *name, void *buff, + size_t size); +int yaffs_removexattr(struct dentry *dentry, const char *name); +ssize_t yaffs_listxattr(struct dentry *dentry, char *buff, size_t size); +#endif + + +#if (YAFFS_USE_WRITE_BEGIN_END != 0) +static int yaffs_write_begin(struct file *filp, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata); +static int yaffs_write_end(struct file *filp, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *pg, void *fsdadata); +#else +static int yaffs_prepare_write(struct file *f, struct page *pg, + unsigned offset, unsigned to); +static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, + unsigned to); + +#endif + +static int yaffs_readlink(struct dentry *dentry, char __user *buffer, + int buflen); +#if (YAFFS_NEW_FOLLOW_LINK == 1) +void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias); +static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); +#else +static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd); +#endif + +static void yaffs_MarkSuperBlockDirty(yaffs_Device *dev); + +static loff_t yaffs_dir_llseek(struct file *file, loff_t offset, int origin); + +static int yaffs_vfs_setattr(struct inode *, struct iattr *); + + +static struct address_space_operations yaffs_file_address_operations = { + .readpage = yaffs_readpage, + .writepage = yaffs_writepage, +#if (YAFFS_USE_WRITE_BEGIN_END > 0) + .write_begin = yaffs_write_begin, + .write_end = yaffs_write_end, +#else + .prepare_write = yaffs_prepare_write, + .commit_write = yaffs_commit_write, +#endif +}; + + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 22)) +static const struct file_operations yaffs_file_operations = { + .read = do_sync_read, + .write = do_sync_write, + .aio_read = generic_file_aio_read, + .aio_write = generic_file_aio_write, + .mmap = generic_file_mmap, + .flush = yaffs_file_flush, + .fsync = yaffs_sync_object, + .splice_read = generic_file_splice_read, + .splice_write = generic_file_splice_write, + .llseek = generic_file_llseek, +}; + +#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 18)) + +static const struct file_operations yaffs_file_operations = { + .read = do_sync_read, + .write = do_sync_write, + .aio_read = generic_file_aio_read, + .aio_write = generic_file_aio_write, + .mmap = generic_file_mmap, + .flush = yaffs_file_flush, + .fsync = yaffs_sync_object, + .sendfile = generic_file_sendfile, +}; + +#else + +static const struct file_operations yaffs_file_operations = { + .read = generic_file_read, + .write = generic_file_write, + .mmap = generic_file_mmap, + .flush = yaffs_file_flush, + .fsync = yaffs_sync_object, +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + .sendfile = generic_file_sendfile, +#endif +}; +#endif + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)) +static void zero_user_segment(struct page *page, unsigned start, unsigned end) +{ + void * kaddr = kmap_atomic(page, KM_USER0); + memset(kaddr + start, 0, end - start); + kunmap_atomic(kaddr, KM_USER0); + flush_dcache_page(page); +} +#endif + + +static const struct inode_operations yaffs_file_inode_operations = { + .setattr = yaffs_setattr, +#ifdef CONFIG_YAFFS_XATTR + .setxattr = yaffs_setxattr, + .getxattr = yaffs_getxattr, + .listxattr = yaffs_listxattr, + .removexattr = yaffs_removexattr, +#endif +}; + +static const struct inode_operations yaffs_symlink_inode_operations = { + .readlink = yaffs_readlink, + .follow_link = yaffs_follow_link, +#if (YAFFS_NEW_FOLLOW_LINK == 1) + .put_link = yaffs_put_link, +#endif + .setattr = yaffs_setattr, +#ifdef CONFIG_YAFFS_XATTR + .setxattr = yaffs_setxattr, + .getxattr = yaffs_getxattr, + .listxattr = yaffs_listxattr, + .removexattr = yaffs_removexattr, +#endif +}; + +static const struct inode_operations yaffs_dir_inode_operations = { + .create = yaffs_create, + .lookup = yaffs_lookup, + .link = yaffs_link, + .unlink = yaffs_unlink, + .symlink = yaffs_symlink, + .mkdir = yaffs_mkdir, + .rmdir = yaffs_unlink, + .mknod = yaffs_mknod, + .rename = yaffs_rename, + .setattr = yaffs_setattr, +#ifdef CONFIG_YAFFS_XATTR + .setxattr = yaffs_setxattr, + .getxattr = yaffs_getxattr, + .listxattr = yaffs_listxattr, + .removexattr = yaffs_removexattr, +#endif +}; + +static const struct file_operations yaffs_dir_operations = { + .read = generic_read_dir, + .readdir = yaffs_readdir, + .fsync = yaffs_sync_object, + .llseek = yaffs_dir_llseek, +}; + +static const struct super_operations yaffs_super_ops = { + .statfs = yaffs_statfs, + +#ifndef YAFFS_USE_OWN_IGET + .read_inode = yaffs_read_inode, +#endif +#ifdef YAFFS_HAS_PUT_INODE + .put_inode = yaffs_put_inode, +#endif + .put_super = yaffs_put_super, +#ifdef YAFFS_HAS_EVICT_INODE + .evict_inode = yaffs_evict_inode, +#else + .delete_inode = yaffs_delete_inode, + .clear_inode = yaffs_clear_inode, +#endif + .sync_fs = yaffs_sync_fs, + .write_super = yaffs_write_super, +}; + + +static int yaffs_vfs_setattr(struct inode *inode, struct iattr *attr) +{ +#ifdef YAFFS_USE_SETATTR_COPY + setattr_copy(inode,attr); + return 0; +#else + return inode_setattr(inode, attr); +#endif + +} + +static int yaffs_vfs_setsize(struct inode *inode, loff_t newsize) +{ +#ifdef YAFFS_USE_TRUNCATE_SETSIZE + truncate_setsize(inode,newsize); + return 0; +#else + truncate_inode_pages(&inode->i_data,newsize); + return 0; +#endif + +} + +static unsigned yaffs_gc_control_callback(yaffs_Device *dev) +{ + return yaffs_gc_control; +} + +static void yaffs_GrossLock(yaffs_Device *dev) +{ + T(YAFFS_TRACE_LOCK, (TSTR("yaffs locking %p\n"), current)); + down(&(yaffs_DeviceToLC(dev)->grossLock)); + T(YAFFS_TRACE_LOCK, (TSTR("yaffs locked %p\n"), current)); +} + +static void yaffs_GrossUnlock(yaffs_Device *dev) +{ + T(YAFFS_TRACE_LOCK, (TSTR("yaffs unlocking %p\n"), current)); + up(&(yaffs_DeviceToLC(dev)->grossLock)); +} + +#ifdef YAFFS_COMPILE_EXPORTFS + +static struct inode * +yaffs2_nfs_get_inode(struct super_block *sb, uint64_t ino, uint32_t generation) +{ + return Y_IGET(sb, ino); +} + +static struct dentry * +yaffs2_fh_to_dentry(struct super_block *sb, struct fid *fid, int fh_len, int fh_type) +{ + return generic_fh_to_dentry(sb, fid, fh_len, fh_type, yaffs2_nfs_get_inode) ; +} + +static struct dentry * + yaffs2_fh_to_parent(struct super_block *sb, struct fid *fid, int fh_len, int fh_type) +{ + return generic_fh_to_parent(sb, fid, fh_len, fh_type, yaffs2_nfs_get_inode); +} + +struct dentry *yaffs2_get_parent(struct dentry *dentry) +{ + + struct super_block *sb = dentry->d_inode->i_sb; + struct dentry *parent = ERR_PTR(-ENOENT); + struct inode *inode; + unsigned long parent_ino; + yaffs_Object *d_obj; + yaffs_Object *parent_obj; + + d_obj = yaffs_InodeToObject(dentry->d_inode); + + if (d_obj) { + parent_obj = d_obj->parent; + if (parent_obj) { + parent_ino = yaffs_GetObjectInode(parent_obj); + inode = Y_IGET(sb, parent_ino); + + if (IS_ERR(inode)) { + parent = ERR_CAST(inode); + } else { + parent = d_obtain_alias(inode); + if (!IS_ERR(parent)) { + parent = ERR_PTR(-ENOMEM); + iput(inode); + } + } + } + } + + return parent; +} + +/* Just declare a zero structure as a NULL value implies + * using the default functions of exportfs. + */ + +static struct export_operations yaffs_export_ops = +{ + .fh_to_dentry = yaffs2_fh_to_dentry, + .fh_to_parent = yaffs2_fh_to_parent, + .get_parent = yaffs2_get_parent, +} ; + +#endif + +/*-----------------------------------------------------------------*/ +/* Directory search context allows us to unlock access to yaffs during + * filldir without causing problems with the directory being modified. + * This is similar to the tried and tested mechanism used in yaffs direct. + * + * A search context iterates along a doubly linked list of siblings in the + * directory. If the iterating object is deleted then this would corrupt + * the list iteration, likely causing a crash. The search context avoids + * this by using the removeObjectCallback to move the search context to the + * next object before the object is deleted. + * + * Many readdirs (and thus seach conexts) may be alive simulateously so + * each yaffs_Device has a list of these. + * + * A seach context lives for the duration of a readdir. + * + * All these functions must be called while yaffs is locked. + */ + +struct yaffs_SearchContext { + yaffs_Device *dev; + yaffs_Object *dirObj; + yaffs_Object *nextReturn; + struct ylist_head others; +}; + +/* + * yaffs_NewSearch() creates a new search context, initialises it and + * adds it to the device's search context list. + * + * Called at start of readdir. + */ +static struct yaffs_SearchContext * yaffs_NewSearch(yaffs_Object *dir) +{ + yaffs_Device *dev = dir->myDev; + struct yaffs_SearchContext *sc = YMALLOC(sizeof(struct yaffs_SearchContext)); + if(sc){ + sc->dirObj = dir; + sc->dev = dev; + if( ylist_empty(&sc->dirObj->variant.directoryVariant.children)) + sc->nextReturn = NULL; + else + sc->nextReturn = ylist_entry( + dir->variant.directoryVariant.children.next, + yaffs_Object,siblings); + YINIT_LIST_HEAD(&sc->others); + ylist_add(&sc->others,&(yaffs_DeviceToLC(dev)->searchContexts)); + } + return sc; +} + +/* + * yaffs_EndSearch() disposes of a search context and cleans up. + */ +static void yaffs_EndSearch(struct yaffs_SearchContext * sc) +{ + if(sc){ + ylist_del(&sc->others); + YFREE(sc); + } +} + +/* + * yaffs_SearchAdvance() moves a search context to the next object. + * Called when the search iterates or when an object removal causes + * the search context to be moved to the next object. + */ +static void yaffs_SearchAdvance(struct yaffs_SearchContext *sc) +{ + if(!sc) + return; + + if( sc->nextReturn == NULL || + ylist_empty(&sc->dirObj->variant.directoryVariant.children)) + sc->nextReturn = NULL; + else { + struct ylist_head *next = sc->nextReturn->siblings.next; + + if( next == &sc->dirObj->variant.directoryVariant.children) + sc->nextReturn = NULL; /* end of list */ + else + sc->nextReturn = ylist_entry(next,yaffs_Object,siblings); + } +} + +/* + * yaffs_RemoveObjectCallback() is called when an object is unlinked. + * We check open search contexts and advance any which are currently + * on the object being iterated. + */ +static void yaffs_RemoveObjectCallback(yaffs_Object *obj) +{ + + struct ylist_head *i; + struct yaffs_SearchContext *sc; + struct ylist_head *search_contexts = &(yaffs_DeviceToLC(obj->myDev)->searchContexts); + + + /* Iterate through the directory search contexts. + * If any are currently on the object being removed, then advance + * the search context to the next object to prevent a hanging pointer. + */ + ylist_for_each(i, search_contexts) { + if (i) { + sc = ylist_entry(i, struct yaffs_SearchContext,others); + if(sc->nextReturn == obj) + yaffs_SearchAdvance(sc); + } + } + +} + + +/*-----------------------------------------------------------------*/ + +static int yaffs_readlink(struct dentry *dentry, char __user *buffer, + int buflen) +{ + unsigned char *alias; + int ret; + + yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; + + yaffs_GrossLock(dev); + + alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry)); + + yaffs_GrossUnlock(dev); + + if (!alias) + return -ENOMEM; + + ret = vfs_readlink(dentry, buffer, buflen, alias); + kfree(alias); + return ret; +} + +#if (YAFFS_NEW_FOLLOW_LINK == 1) +static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) +#else +static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd) +#endif +{ + unsigned char *alias; + int ret; + yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; + + yaffs_GrossLock(dev); + + alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry)); + yaffs_GrossUnlock(dev); + + if (!alias) { + ret = -ENOMEM; + goto out; + } + +#if (YAFFS_NEW_FOLLOW_LINK == 1) + nd_set_link(nd, alias); + ret = (int)alias; +out: + return ERR_PTR(ret); +#else + ret = vfs_follow_link(nd, alias); + kfree(alias); +out: + return ret; +#endif +} + +#if (YAFFS_NEW_FOLLOW_LINK == 1) +void yaffs_put_link(struct dentry *dentry, struct nameidata *nd, void *alias) { + kfree(alias); +} +#endif + +struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, + yaffs_Object *obj); + +/* + * Lookup is used to find objects in the fs + */ +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + +static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry, + struct nameidata *n) +#else +static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry) +#endif +{ + yaffs_Object *obj; + struct inode *inode = NULL; /* NCB 2.5/2.6 needs NULL here */ + + yaffs_Device *dev = yaffs_InodeToObject(dir)->myDev; + + if(current != yaffs_DeviceToLC(dev)->readdirProcess) + yaffs_GrossLock(dev); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_lookup for %d:%s\n"), + yaffs_InodeToObject(dir)->objectId, dentry->d_name.name)); + + obj = yaffs_FindObjectByName(yaffs_InodeToObject(dir), + dentry->d_name.name); + + obj = yaffs_GetEquivalentObject(obj); /* in case it was a hardlink */ + + /* Can't hold gross lock when calling yaffs_get_inode() */ + if(current != yaffs_DeviceToLC(dev)->readdirProcess) + yaffs_GrossUnlock(dev); + + if (obj) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_lookup found %d\n"), obj->objectId)); + + inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); + + if (inode) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_loookup dentry \n"))); +/* #if 0 asserted by NCB for 2.5/6 compatability - falls through to + * d_add even if NULL inode */ +#if 0 + /*dget(dentry); // try to solve directory bug */ + d_add(dentry, inode); + + /* return dentry; */ + return NULL; +#endif + } + + } else { + T(YAFFS_TRACE_OS,(TSTR("yaffs_lookup not found\n"))); + + } + +/* added NCB for 2.5/6 compatability - forces add even if inode is + * NULL which creates dentry hash */ + d_add(dentry, inode); + + return NULL; +} + + +#ifdef YAFFS_HAS_PUT_INODE + +/* For now put inode is just for debugging + * Put inode is called when the inode **structure** is put. + */ +static void yaffs_put_inode(struct inode *inode) +{ + T(YAFFS_TRACE_OS, + (TSTR("yaffs_put_inode: ino %d, count %d\n"), (int)inode->i_ino, + atomic_read(&inode->i_count))); + +} +#endif + + +static void yaffs_UnstitchObject(struct inode *inode, yaffs_Object *obj) +{ + /* Clear the association between the inode and + * the yaffs_Object. + */ + obj->myInode = NULL; + yaffs_InodeToObjectLV(inode) = NULL; + + /* If the object freeing was deferred, then the real + * free happens now. + * This should fix the inode inconsistency problem. + */ + yaffs_HandleDeferedFree(obj); +} + +#ifdef YAFFS_HAS_EVICT_INODE +/* yaffs_evict_inode combines into one operation what was previously done in + * yaffs_clear_inode() and yaffs_delete_inode() + * + */ +static void yaffs_evict_inode( struct inode *inode) +{ + yaffs_Object *obj; + yaffs_Device *dev; + int deleteme = 0; + + obj = yaffs_InodeToObject(inode); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_evict_inode: ino %d, count %d %s\n"), (int)inode->i_ino, + atomic_read(&inode->i_count), + obj ? "object exists" : "null object")); + + if (!inode->i_nlink && !is_bad_inode(inode)) + deleteme = 1; + truncate_inode_pages(&inode->i_data,0); + end_writeback(inode); + + if(deleteme && obj){ + dev = obj->myDev; + yaffs_GrossLock(dev); + yaffs_DeleteObject(obj); + yaffs_GrossUnlock(dev); + } + if (obj) { + dev = obj->myDev; + yaffs_GrossLock(dev); + yaffs_UnstitchObject(inode,obj); + yaffs_GrossUnlock(dev); + } + + +} +#else + +/* clear is called to tell the fs to release any per-inode data it holds. + * The object might still exist on disk and is just being thrown out of the cache + * or else the object has actually been deleted and we're being called via + * the chain + * yaffs_delete_inode() -> clear_inode()->yaffs_clear_inode() + */ + +static void yaffs_clear_inode(struct inode *inode) +{ + yaffs_Object *obj; + yaffs_Device *dev; + + obj = yaffs_InodeToObject(inode); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_clear_inode: ino %d, count %d %s\n"), (int)inode->i_ino, + atomic_read(&inode->i_count), + obj ? "object exists" : "null object")); + + if (obj) { + dev = obj->myDev; + yaffs_GrossLock(dev); + yaffs_UnstitchObject(inode,obj); + yaffs_GrossUnlock(dev); + } + +} + +/* delete is called when the link count is zero and the inode + * is put (ie. nobody wants to know about it anymore, time to + * delete the file). + * NB Must call clear_inode() + */ +static void yaffs_delete_inode(struct inode *inode) +{ + yaffs_Object *obj = yaffs_InodeToObject(inode); + yaffs_Device *dev; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_delete_inode: ino %d, count %d %s\n"), (int)inode->i_ino, + atomic_read(&inode->i_count), + obj ? "object exists" : "null object")); + + if (obj) { + dev = obj->myDev; + yaffs_GrossLock(dev); + yaffs_DeleteObject(obj); + yaffs_GrossUnlock(dev); + } +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 13)) + truncate_inode_pages(&inode->i_data, 0); +#endif + clear_inode(inode); +} +#endif + + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_file_flush(struct file *file, fl_owner_t id) +#else +static int yaffs_file_flush(struct file *file) +#endif +{ + yaffs_Object *obj = yaffs_DentryToObject(file->f_dentry); + + yaffs_Device *dev = obj->myDev; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_file_flush object %d (%s)\n"), obj->objectId, + obj->dirty ? "dirty" : "clean")); + + yaffs_GrossLock(dev); + + yaffs_FlushFile(obj, 1, 0); + + yaffs_GrossUnlock(dev); + + return 0; +} + +static int yaffs_readpage_nolock(struct file *f, struct page *pg) +{ + /* Lifted from jffs2 */ + + yaffs_Object *obj; + unsigned char *pg_buf; + int ret; + + yaffs_Device *dev; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_readpage_nolock at %08x, size %08x\n"), + (unsigned)(pg->index << PAGE_CACHE_SHIFT), + (unsigned)PAGE_CACHE_SIZE)); + + obj = yaffs_DentryToObject(f->f_dentry); + + dev = obj->myDev; + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + BUG_ON(!PageLocked(pg)); +#else + if (!PageLocked(pg)) + PAGE_BUG(pg); +#endif + + pg_buf = kmap(pg); + /* FIXME: Can kmap fail? */ + + yaffs_GrossLock(dev); + + ret = yaffs_ReadDataFromFile(obj, pg_buf, + pg->index << PAGE_CACHE_SHIFT, + PAGE_CACHE_SIZE); + + yaffs_GrossUnlock(dev); + + if (ret >= 0) + ret = 0; + + if (ret) { + ClearPageUptodate(pg); + SetPageError(pg); + } else { + SetPageUptodate(pg); + ClearPageError(pg); + } + + flush_dcache_page(pg); + kunmap(pg); + + T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage_nolock done\n"))); + return ret; +} + +static int yaffs_readpage_unlock(struct file *f, struct page *pg) +{ + int ret = yaffs_readpage_nolock(f, pg); + UnlockPage(pg); + return ret; +} + +static int yaffs_readpage(struct file *f, struct page *pg) +{ + int ret; + + T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage\n"))); + ret=yaffs_readpage_unlock(f, pg); + T(YAFFS_TRACE_OS, (TSTR("yaffs_readpage done\n"))); + return ret; +} + +/* writepage inspired by/stolen from smbfs */ + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_writepage(struct page *page, struct writeback_control *wbc) +#else +static int yaffs_writepage(struct page *page) +#endif +{ + yaffs_Device *dev; + struct address_space *mapping = page->mapping; + struct inode *inode; + unsigned long end_index; + char *buffer; + yaffs_Object *obj; + int nWritten = 0; + unsigned nBytes; + loff_t i_size; + + if (!mapping) + BUG(); + inode = mapping->host; + if (!inode) + BUG(); + i_size = i_size_read(inode); + + end_index = i_size >> PAGE_CACHE_SHIFT; + + if(page->index < end_index) + nBytes = PAGE_CACHE_SIZE; + else { + nBytes = i_size & (PAGE_CACHE_SIZE -1); + + if (page->index > end_index || !nBytes) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_writepage at %08x, inode size = %08x!!!\n"), + (unsigned)(page->index << PAGE_CACHE_SHIFT), + (unsigned)inode->i_size)); + T(YAFFS_TRACE_OS, + (TSTR(" -> don't care!!\n"))); + + zero_user_segment(page,0,PAGE_CACHE_SIZE); + set_page_writeback(page); + unlock_page(page); + end_page_writeback(page); + return 0; + } + } + + if(nBytes != PAGE_CACHE_SIZE) + zero_user_segment(page,nBytes,PAGE_CACHE_SIZE); + + get_page(page); + + buffer = kmap(page); + + obj = yaffs_InodeToObject(inode); + dev = obj->myDev; + yaffs_GrossLock(dev); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_writepage at %08x, size %08x\n"), + (unsigned)(page->index << PAGE_CACHE_SHIFT), nBytes)); + T(YAFFS_TRACE_OS, + (TSTR("writepag0: obj = %05x, ino = %05x\n"), + (int)obj->variant.fileVariant.fileSize, (int)inode->i_size)); + + nWritten = yaffs_WriteDataToFile(obj, buffer, + page->index << PAGE_CACHE_SHIFT, nBytes, 0); + + yaffs_MarkSuperBlockDirty(dev); + + T(YAFFS_TRACE_OS, + (TSTR("writepag1: obj = %05x, ino = %05x\n"), + (int)obj->variant.fileVariant.fileSize, (int)inode->i_size)); + + yaffs_GrossUnlock(dev); + + kunmap(page); + set_page_writeback(page); + unlock_page(page); + end_page_writeback(page); + put_page(page); + + return (nWritten == nBytes) ? 0 : -ENOSPC; +} + + +#if (YAFFS_USE_WRITE_BEGIN_END > 0) +static int yaffs_write_begin(struct file *filp, struct address_space *mapping, + loff_t pos, unsigned len, unsigned flags, + struct page **pagep, void **fsdata) +{ + struct page *pg = NULL; + pgoff_t index = pos >> PAGE_CACHE_SHIFT; + + int ret = 0; + int space_held = 0; + + /* Get a page */ +#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 28) + pg = grab_cache_page_write_begin(mapping, index, flags); +#else + pg = __grab_cache_page(mapping, index); +#endif + + *pagep = pg; + if (!pg) { + ret = -ENOMEM; + goto out; + } + T(YAFFS_TRACE_OS, + (TSTR("start yaffs_write_begin index %d(%x) uptodate %d\n"), + (int)index,(int)index,Page_Uptodate(pg) ? 1 : 0)); + + /* Get fs space */ + space_held = yaffs_hold_space(filp); + + if (!space_held) { + ret = -ENOSPC; + goto out; + } + + /* Update page if required */ + + if (!Page_Uptodate(pg)) + ret = yaffs_readpage_nolock(filp, pg); + + if (ret) + goto out; + + /* Happy path return */ + T(YAFFS_TRACE_OS, (TSTR("end yaffs_write_begin - ok\n"))); + + return 0; + +out: + T(YAFFS_TRACE_OS, + (TSTR("end yaffs_write_begin fail returning %d\n"), ret)); + if (space_held) + yaffs_release_space(filp); + if (pg) { + unlock_page(pg); + page_cache_release(pg); + } + return ret; +} + +#else + +static int yaffs_prepare_write(struct file *f, struct page *pg, + unsigned offset, unsigned to) +{ + T(YAFFS_TRACE_OS, (TSTR("yaffs_prepair_write\n"))); + + if (!Page_Uptodate(pg)) + return yaffs_readpage_nolock(f, pg); + return 0; +} +#endif + +#if (YAFFS_USE_WRITE_BEGIN_END > 0) +static int yaffs_write_end(struct file *filp, struct address_space *mapping, + loff_t pos, unsigned len, unsigned copied, + struct page *pg, void *fsdadata) +{ + int ret = 0; + void *addr, *kva; + uint32_t offset_into_page = pos & (PAGE_CACHE_SIZE - 1); + + kva = kmap(pg); + addr = kva + offset_into_page; + + T(YAFFS_TRACE_OS, + ("yaffs_write_end addr %p pos %x nBytes %d\n", + addr,(unsigned)pos, copied)); + + ret = yaffs_file_write(filp, addr, copied, &pos); + + if (ret != copied) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_write_end not same size ret %d copied %d\n"), + ret, copied)); + SetPageError(pg); + } else { + /* Nothing */ + } + + kunmap(pg); + + yaffs_release_space(filp); + unlock_page(pg); + page_cache_release(pg); + return ret; +} +#else + +static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset, + unsigned to) +{ + void *addr, *kva; + + loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset; + int nBytes = to - offset; + int nWritten; + + unsigned spos = pos; + unsigned saddr; + + kva = kmap(pg); + addr = kva + offset; + + saddr = (unsigned) addr; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_commit_write addr %x pos %x nBytes %d\n"), + saddr, spos, nBytes)); + + nWritten = yaffs_file_write(f, addr, nBytes, &pos); + + if (nWritten != nBytes) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_commit_write not same size nWritten %d nBytes %d\n"), + nWritten, nBytes)); + SetPageError(pg); + } else { + /* Nothing */ + } + + kunmap(pg); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_commit_write returning %d\n"), + nWritten == nBytes ? 0 : nWritten)); + + return nWritten == nBytes ? 0 : nWritten; +} +#endif + + +static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object *obj) +{ + if (inode && obj) { + + + /* Check mode against the variant type and attempt to repair if broken. */ + __u32 mode = obj->yst_mode; + switch (obj->variantType) { + case YAFFS_OBJECT_TYPE_FILE: + if (!S_ISREG(mode)) { + obj->yst_mode &= ~S_IFMT; + obj->yst_mode |= S_IFREG; + } + + break; + case YAFFS_OBJECT_TYPE_SYMLINK: + if (!S_ISLNK(mode)) { + obj->yst_mode &= ~S_IFMT; + obj->yst_mode |= S_IFLNK; + } + + break; + case YAFFS_OBJECT_TYPE_DIRECTORY: + if (!S_ISDIR(mode)) { + obj->yst_mode &= ~S_IFMT; + obj->yst_mode |= S_IFDIR; + } + + break; + case YAFFS_OBJECT_TYPE_UNKNOWN: + case YAFFS_OBJECT_TYPE_HARDLINK: + case YAFFS_OBJECT_TYPE_SPECIAL: + default: + /* TODO? */ + break; + } + + inode->i_flags |= S_NOATIME; + + inode->i_ino = obj->objectId; + inode->i_mode = obj->yst_mode; + inode->i_uid = obj->yst_uid; + inode->i_gid = obj->yst_gid; +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 19)) + inode->i_blksize = inode->i_sb->s_blocksize; +#endif +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + + inode->i_rdev = old_decode_dev(obj->yst_rdev); + inode->i_atime.tv_sec = (time_t) (obj->yst_atime); + inode->i_atime.tv_nsec = 0; + inode->i_mtime.tv_sec = (time_t) obj->yst_mtime; + inode->i_mtime.tv_nsec = 0; + inode->i_ctime.tv_sec = (time_t) obj->yst_ctime; + inode->i_ctime.tv_nsec = 0; +#else + inode->i_rdev = obj->yst_rdev; + inode->i_atime = obj->yst_atime; + inode->i_mtime = obj->yst_mtime; + inode->i_ctime = obj->yst_ctime; +#endif + inode->i_size = yaffs_GetObjectFileLength(obj); + inode->i_blocks = (inode->i_size + 511) >> 9; + + inode->i_nlink = yaffs_GetObjectLinkCount(obj); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_FillInode mode %x uid %d gid %d size %d count %d\n"), + inode->i_mode, inode->i_uid, inode->i_gid, + (int)inode->i_size, atomic_read(&inode->i_count))); + + switch (obj->yst_mode & S_IFMT) { + default: /* fifo, device or socket */ +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + init_special_inode(inode, obj->yst_mode, + old_decode_dev(obj->yst_rdev)); +#else + init_special_inode(inode, obj->yst_mode, + (dev_t) (obj->yst_rdev)); +#endif + break; + case S_IFREG: /* file */ + inode->i_op = &yaffs_file_inode_operations; + inode->i_fop = &yaffs_file_operations; + inode->i_mapping->a_ops = + &yaffs_file_address_operations; + break; + case S_IFDIR: /* directory */ + inode->i_op = &yaffs_dir_inode_operations; + inode->i_fop = &yaffs_dir_operations; + break; + case S_IFLNK: /* symlink */ + inode->i_op = &yaffs_symlink_inode_operations; + break; + } + + yaffs_InodeToObjectLV(inode) = obj; + + obj->myInode = inode; + + } else { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_FileInode invalid parameters\n"))); + } + +} + +struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev, + yaffs_Object *obj) +{ + struct inode *inode; + + if (!sb) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_get_inode for NULL super_block!!\n"))); + return NULL; + + } + + if (!obj) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_get_inode for NULL object!!\n"))); + return NULL; + + } + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_get_inode for object %d\n"), obj->objectId)); + + inode = Y_IGET(sb, obj->objectId); + if (IS_ERR(inode)) + return NULL; + + /* NB Side effect: iget calls back to yaffs_read_inode(). */ + /* iget also increments the inode's i_count */ + /* NB You can't be holding grossLock or deadlock will happen! */ + + return inode; +} + +static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n, + loff_t *pos) +{ + yaffs_Object *obj; + int nWritten, ipos; + struct inode *inode; + yaffs_Device *dev; + + obj = yaffs_DentryToObject(f->f_dentry); + + dev = obj->myDev; + + yaffs_GrossLock(dev); + + inode = f->f_dentry->d_inode; + + if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) + ipos = inode->i_size; + else + ipos = *pos; + + if (!obj) + T(YAFFS_TRACE_OS, + (TSTR("yaffs_file_write: hey obj is null!\n"))); + else + T(YAFFS_TRACE_OS, + (TSTR("yaffs_file_write about to write writing %u(%x) bytes" + "to object %d at %d(%x)\n"), + (unsigned) n, (unsigned) n, obj->objectId, ipos,ipos)); + + nWritten = yaffs_WriteDataToFile(obj, buf, ipos, n, 0); + + yaffs_MarkSuperBlockDirty(dev); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_file_write: %d(%x) bytes written\n"), + (unsigned )n,(unsigned)n)); + + if (nWritten > 0) { + ipos += nWritten; + *pos = ipos; + if (ipos > inode->i_size) { + inode->i_size = ipos; + inode->i_blocks = (ipos + 511) >> 9; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_file_write size updated to %d bytes, " + "%d blocks\n"), + ipos, (int)(inode->i_blocks))); + } + + } + yaffs_GrossUnlock(dev); + return (nWritten == 0) && (n > 0) ? -ENOSPC : nWritten; +} + +/* Space holding and freeing is done to ensure we have space available for write_begin/end */ +/* For now we just assume few parallel writes and check against a small number. */ +/* Todo: need to do this with a counter to handle parallel reads better */ + +static ssize_t yaffs_hold_space(struct file *f) +{ + yaffs_Object *obj; + yaffs_Device *dev; + + int nFreeChunks; + + + obj = yaffs_DentryToObject(f->f_dentry); + + dev = obj->myDev; + + yaffs_GrossLock(dev); + + nFreeChunks = yaffs_GetNumberOfFreeChunks(dev); + + yaffs_GrossUnlock(dev); + + return (nFreeChunks > 20) ? 1 : 0; +} + +static void yaffs_release_space(struct file *f) +{ + yaffs_Object *obj; + yaffs_Device *dev; + + + obj = yaffs_DentryToObject(f->f_dentry); + + dev = obj->myDev; + + yaffs_GrossLock(dev); + + + yaffs_GrossUnlock(dev); +} + + +static loff_t yaffs_dir_llseek(struct file *file, loff_t offset, int origin) +{ + long long retval; + + lock_kernel(); + + switch (origin){ + case 2: + offset += i_size_read(file->f_path.dentry->d_inode); + break; + case 1: + offset += file->f_pos; + } + retval = -EINVAL; + + if (offset >= 0){ + if (offset != file->f_pos) + file->f_pos = offset; + + retval = offset; + } + unlock_kernel(); + return retval; +} + + +static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir) +{ + yaffs_Object *obj; + yaffs_Device *dev; + struct yaffs_SearchContext *sc; + struct inode *inode = f->f_dentry->d_inode; + unsigned long offset, curoffs; + yaffs_Object *l; + int retVal = 0; + + char name[YAFFS_MAX_NAME_LENGTH + 1]; + + obj = yaffs_DentryToObject(f->f_dentry); + dev = obj->myDev; + + yaffs_GrossLock(dev); + + yaffs_DeviceToLC(dev)->readdirProcess = current; + + offset = f->f_pos; + + sc = yaffs_NewSearch(obj); + if(!sc){ + retVal = -ENOMEM; + goto out; + } + + T(YAFFS_TRACE_OS, (TSTR("yaffs_readdir: starting at %d\n"), (int)offset)); + + if (offset == 0) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_readdir: entry . ino %d \n"), + (int)inode->i_ino)); + yaffs_GrossUnlock(dev); + if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR) < 0){ + yaffs_GrossLock(dev); + goto out; + } + yaffs_GrossLock(dev); + offset++; + f->f_pos++; + } + if (offset == 1) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_readdir: entry .. ino %d \n"), + (int)f->f_dentry->d_parent->d_inode->i_ino)); + yaffs_GrossUnlock(dev); + if (filldir(dirent, "..", 2, offset, + f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0){ + yaffs_GrossLock(dev); + goto out; + } + yaffs_GrossLock(dev); + offset++; + f->f_pos++; + } + + curoffs = 1; + + /* If the directory has changed since the open or last call to + readdir, rewind to after the 2 canned entries. */ + if (f->f_version != inode->i_version) { + offset = 2; + f->f_pos = offset; + f->f_version = inode->i_version; + } + + while(sc->nextReturn){ + curoffs++; + l = sc->nextReturn; + if (curoffs >= offset) { + int this_inode = yaffs_GetObjectInode(l); + int this_type = yaffs_GetObjectType(l); + + yaffs_GetObjectName(l, name, + YAFFS_MAX_NAME_LENGTH + 1); + T(YAFFS_TRACE_OS, + (TSTR("yaffs_readdir: %s inode %d\n"), + name, yaffs_GetObjectInode(l))); + + yaffs_GrossUnlock(dev); + + if (filldir(dirent, + name, + strlen(name), + offset, + this_inode, + this_type) < 0){ + yaffs_GrossLock(dev); + goto out; + } + + yaffs_GrossLock(dev); + + offset++; + f->f_pos++; + } + yaffs_SearchAdvance(sc); + } + +out: + yaffs_EndSearch(sc); + yaffs_DeviceToLC(dev)->readdirProcess = NULL; + yaffs_GrossUnlock(dev); + + return retVal; +} + + + +/* + * File creation. Allocate an inode, and we're done.. + */ + +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) +#define YCRED(x) x +#else +#define YCRED(x) (x->cred) +#endif + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, + dev_t rdev) +#else +static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode, + int rdev) +#endif +{ + struct inode *inode; + + yaffs_Object *obj = NULL; + yaffs_Device *dev; + + yaffs_Object *parent = yaffs_InodeToObject(dir); + + int error = -ENOSPC; + uid_t uid = YCRED(current)->fsuid; + gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; + + if ((dir->i_mode & S_ISGID) && S_ISDIR(mode)) + mode |= S_ISGID; + + if (parent) { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_mknod: parent object %d type %d\n"), + parent->objectId, parent->variantType)); + } else { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_mknod: could not get parent object\n"))); + return -EPERM; + } + + T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making oject for %s, " + "mode %x dev %x\n"), + dentry->d_name.name, mode, rdev)); + + dev = parent->myDev; + + yaffs_GrossLock(dev); + + switch (mode & S_IFMT) { + default: + /* Special (socket, fifo, device...) */ + T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making special\n"))); +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid, + gid, old_encode_dev(rdev)); +#else + obj = yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid, + gid, rdev); +#endif + break; + case S_IFREG: /* file */ + T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making file\n"))); + obj = yaffs_MknodFile(parent, dentry->d_name.name, mode, uid, + gid); + break; + case S_IFDIR: /* directory */ + T(YAFFS_TRACE_OS, + (TSTR("yaffs_mknod: making directory\n"))); + obj = yaffs_MknodDirectory(parent, dentry->d_name.name, mode, + uid, gid); + break; + case S_IFLNK: /* symlink */ + T(YAFFS_TRACE_OS, (TSTR("yaffs_mknod: making symlink\n"))); + obj = NULL; /* Do we ever get here? */ + break; + } + + /* Can not call yaffs_get_inode() with gross lock held */ + yaffs_GrossUnlock(dev); + + if (obj) { + inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj); + d_instantiate(dentry, inode); + update_dir_time(dir); + T(YAFFS_TRACE_OS, + (TSTR("yaffs_mknod created object %d count = %d\n"), + obj->objectId, atomic_read(&inode->i_count))); + error = 0; + yaffs_FillInodeFromObject(dir,parent); + } else { + T(YAFFS_TRACE_OS, + (TSTR("yaffs_mknod failed making object\n"))); + error = -ENOMEM; + } + + return error; +} + +static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode) +{ + int retVal; + T(YAFFS_TRACE_OS, (TSTR("yaffs_mkdir\n"))); + retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0); + return retVal; +} + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode, + struct nameidata *n) +#else +static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode) +#endif +{ + T(YAFFS_TRACE_OS,(TSTR("yaffs_create\n"))); + return yaffs_mknod(dir, dentry, mode | S_IFREG, 0); +} + +static int yaffs_unlink(struct inode *dir, struct dentry *dentry) +{ + int retVal; + + yaffs_Device *dev; + yaffs_Object *obj; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_unlink %d:%s\n"), + (int)(dir->i_ino), + dentry->d_name.name)); + obj = yaffs_InodeToObject(dir); + dev = obj->myDev; + + yaffs_GrossLock(dev); + + retVal = yaffs_Unlink(obj, dentry->d_name.name); + + if (retVal == YAFFS_OK) { + dentry->d_inode->i_nlink--; + dir->i_version++; + yaffs_GrossUnlock(dev); + mark_inode_dirty(dentry->d_inode); + update_dir_time(dir); + return 0; + } + yaffs_GrossUnlock(dev); + return -ENOTEMPTY; +} + +/* + * Create a link... + */ +static int yaffs_link(struct dentry *old_dentry, struct inode *dir, + struct dentry *dentry) +{ + struct inode *inode = old_dentry->d_inode; + yaffs_Object *obj = NULL; + yaffs_Object *link = NULL; + yaffs_Device *dev; + + T(YAFFS_TRACE_OS, (TSTR("yaffs_link\n"))); + + obj = yaffs_InodeToObject(inode); + dev = obj->myDev; + + yaffs_GrossLock(dev); + + if (!S_ISDIR(inode->i_mode)) /* Don't link directories */ + link = yaffs_Link(yaffs_InodeToObject(dir), dentry->d_name.name, + obj); + + if (link) { + old_dentry->d_inode->i_nlink = yaffs_GetObjectLinkCount(obj); + d_instantiate(dentry, old_dentry->d_inode); + atomic_inc(&old_dentry->d_inode->i_count); + T(YAFFS_TRACE_OS, + (TSTR("yaffs_link link count %d i_count %d\n"), + old_dentry->d_inode->i_nlink, + atomic_read(&old_dentry->d_inode->i_count))); + } + + yaffs_GrossUnlock(dev); + + if (link){ + update_dir_time(dir); + return 0; + } + + return -EPERM; +} + +static int yaffs_symlink(struct inode *dir, struct dentry *dentry, + const char *symname) +{ + yaffs_Object *obj; + yaffs_Device *dev; + uid_t uid = YCRED(current)->fsuid; + gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : YCRED(current)->fsgid; + + T(YAFFS_TRACE_OS, (TSTR("yaffs_symlink\n"))); + + dev = yaffs_InodeToObject(dir)->myDev; + yaffs_GrossLock(dev); + obj = yaffs_MknodSymLink(yaffs_InodeToObject(dir), dentry->d_name.name, + S_IFLNK | S_IRWXUGO, uid, gid, symname); + yaffs_GrossUnlock(dev); + + if (obj) { + struct inode *inode; + + inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj); + d_instantiate(dentry, inode); + update_dir_time(dir); + T(YAFFS_TRACE_OS, (TSTR("symlink created OK\n"))); + return 0; + } else { + T(YAFFS_TRACE_OS, (TSTR("symlink not created\n"))); + } + + return -ENOMEM; +} + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34)) +static int yaffs_sync_object(struct file *file, int datasync) +#else +static int yaffs_sync_object(struct file *file, struct dentry *dentry, + int datasync) +#endif +{ + + yaffs_Object *obj; + yaffs_Device *dev; +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 34)) + struct dentry *dentry = file->f_path.dentry; +#endif + + obj = yaffs_DentryToObject(dentry); + + dev = obj->myDev; + + T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, + (TSTR("yaffs_sync_object\n"))); + yaffs_GrossLock(dev); + yaffs_FlushFile(obj, 1, datasync); + yaffs_GrossUnlock(dev); + return 0; +} + +/* + * The VFS layer already does all the dentry stuff for rename. + * + * NB: POSIX says you can rename an object over an old object of the same name + */ +static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry, + struct inode *new_dir, struct dentry *new_dentry) +{ + yaffs_Device *dev; + int retVal = YAFFS_FAIL; + yaffs_Object *target; + + T(YAFFS_TRACE_OS, (TSTR("yaffs_rename\n"))); + dev = yaffs_InodeToObject(old_dir)->myDev; + + yaffs_GrossLock(dev); + + /* Check if the target is an existing directory that is not empty. */ + target = yaffs_FindObjectByName(yaffs_InodeToObject(new_dir), + new_dentry->d_name.name); + + + + if (target && target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY && + !ylist_empty(&target->variant.directoryVariant.children)) { + + T(YAFFS_TRACE_OS, (TSTR("target is non-empty dir\n"))); + + retVal = YAFFS_FAIL; + } else { + /* Now does unlinking internally using shadowing mechanism */ + T(YAFFS_TRACE_OS, (TSTR("calling yaffs_RenameObject\n"))); + + retVal = yaffs_RenameObject(yaffs_InodeToObject(old_dir), + old_dentry->d_name.name, + yaffs_InodeToObject(new_dir), + new_dentry->d_name.name); + } + yaffs_GrossUnlock(dev); + + if (retVal == YAFFS_OK) { + if (target) { + new_dentry->d_inode->i_nlink--; + mark_inode_dirty(new_dentry->d_inode); + } + + update_dir_time(old_dir); + if(old_dir != new_dir) + update_dir_time(new_dir); + return 0; + } else { + return -ENOTEMPTY; + } +} + +static int yaffs_setattr(struct dentry *dentry, struct iattr *attr) +{ + struct inode *inode = dentry->d_inode; + int error = 0; + yaffs_Device *dev; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_setattr of object %d\n"), + yaffs_InodeToObject(inode)->objectId)); + + /* Fail if a requested resize >= 2GB */ + if (attr->ia_valid & ATTR_SIZE && + (attr->ia_size >> 31)) + error = -EINVAL; + + if (error == 0) + error = inode_change_ok(inode, attr); + if (error == 0) { + int result; + if (!error){ + error = yaffs_vfs_setattr(inode, attr); + T(YAFFS_TRACE_OS,(TSTR("inode_setattr called\n"))); + if (attr->ia_valid & ATTR_SIZE){ + yaffs_vfs_setsize(inode,attr->ia_size); + inode->i_blocks = (inode->i_size + 511) >> 9; + } + } + dev = yaffs_InodeToObject(inode)->myDev; + if (attr->ia_valid & ATTR_SIZE){ + T(YAFFS_TRACE_OS,(TSTR("resize to %d(%x)\n"), + (int)(attr->ia_size),(int)(attr->ia_size))); + } + yaffs_GrossLock(dev); + result = yaffs_SetAttributes(yaffs_InodeToObject(inode), attr); + if(result == YAFFS_OK) { + error = 0; + } else { + error = -EPERM; + } + yaffs_GrossUnlock(dev); + + } + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_setattr done returning %d\n"),error)); + + return error; +} + +#ifdef CONFIG_YAFFS_XATTR +int yaffs_setxattr(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags) +{ + struct inode *inode = dentry->d_inode; + int error = 0; + yaffs_Device *dev; + yaffs_Object *obj = yaffs_InodeToObject(inode); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_setxattr of object %d\n"), + obj->objectId)); + + + if (error == 0) { + int result; + dev = obj->myDev; + yaffs_GrossLock(dev); + result = yaffs_SetXAttribute(obj, name, value, size, flags); + if(result == YAFFS_OK) + error = 0; + else if(result < 0) + error = result; + yaffs_GrossUnlock(dev); + + } + T(YAFFS_TRACE_OS, + (TSTR("yaffs_setxattr done returning %d\n"),error)); + + return error; +} + + +ssize_t yaffs_getxattr(struct dentry *dentry, const char *name, void *buff, + size_t size) +{ + struct inode *inode = dentry->d_inode; + int error = 0; + yaffs_Device *dev; + yaffs_Object *obj = yaffs_InodeToObject(inode); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_getxattr \"%s\" from object %d\n"), + name, obj->objectId)); + + if (error == 0) { + dev = obj->myDev; + yaffs_GrossLock(dev); + error = yaffs_GetXAttribute(obj, name, buff, size); + yaffs_GrossUnlock(dev); + + } + T(YAFFS_TRACE_OS, + (TSTR("yaffs_getxattr done returning %d\n"),error)); + + return error; +} + +int yaffs_removexattr(struct dentry *dentry, const char *name) +{ + struct inode *inode = dentry->d_inode; + int error = 0; + yaffs_Device *dev; + yaffs_Object *obj = yaffs_InodeToObject(inode); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_removexattr of object %d\n"), + obj->objectId)); + + + if (error == 0) { + int result; + dev = obj->myDev; + yaffs_GrossLock(dev); + result = yaffs_RemoveXAttribute(obj, name); + if(result == YAFFS_OK) + error = 0; + else if(result < 0) + error = result; + yaffs_GrossUnlock(dev); + + } + T(YAFFS_TRACE_OS, + (TSTR("yaffs_removexattr done returning %d\n"),error)); + + return error; +} + +ssize_t yaffs_listxattr(struct dentry *dentry, char *buff, size_t size) +{ + struct inode *inode = dentry->d_inode; + int error = 0; + yaffs_Device *dev; + yaffs_Object *obj = yaffs_InodeToObject(inode); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_listxattr of object %d\n"), + obj->objectId)); + + + if (error == 0) { + dev = obj->myDev; + yaffs_GrossLock(dev); + error = yaffs_ListXAttributes(obj, buff, size); + yaffs_GrossUnlock(dev); + + } + T(YAFFS_TRACE_OS, + (TSTR("yaffs_listxattr done returning %d\n"),error)); + + return error; +} + +#endif + + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf) +{ + yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev; + struct super_block *sb = dentry->d_sb; +#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf) +{ + yaffs_Device *dev = yaffs_SuperToDevice(sb); +#else +static int yaffs_statfs(struct super_block *sb, struct statfs *buf) +{ + yaffs_Device *dev = yaffs_SuperToDevice(sb); +#endif + + T(YAFFS_TRACE_OS, (TSTR("yaffs_statfs\n"))); + + yaffs_GrossLock(dev); + + buf->f_type = YAFFS_MAGIC; + buf->f_bsize = sb->s_blocksize; + buf->f_namelen = 255; + + if (dev->nDataBytesPerChunk & (dev->nDataBytesPerChunk - 1)) { + /* Do this if chunk size is not a power of 2 */ + + uint64_t bytesInDev; + uint64_t bytesFree; + + bytesInDev = ((uint64_t)((dev->param.endBlock - dev->param.startBlock + 1))) * + ((uint64_t)(dev->param.nChunksPerBlock * dev->nDataBytesPerChunk)); + + do_div(bytesInDev, sb->s_blocksize); /* bytesInDev becomes the number of blocks */ + buf->f_blocks = bytesInDev; + + bytesFree = ((uint64_t)(yaffs_GetNumberOfFreeChunks(dev))) * + ((uint64_t)(dev->nDataBytesPerChunk)); + + do_div(bytesFree, sb->s_blocksize); + + buf->f_bfree = bytesFree; + + } else if (sb->s_blocksize > dev->nDataBytesPerChunk) { + + buf->f_blocks = + (dev->param.endBlock - dev->param.startBlock + 1) * + dev->param.nChunksPerBlock / + (sb->s_blocksize / dev->nDataBytesPerChunk); + buf->f_bfree = + yaffs_GetNumberOfFreeChunks(dev) / + (sb->s_blocksize / dev->nDataBytesPerChunk); + } else { + buf->f_blocks = + (dev->param.endBlock - dev->param.startBlock + 1) * + dev->param.nChunksPerBlock * + (dev->nDataBytesPerChunk / sb->s_blocksize); + + buf->f_bfree = + yaffs_GetNumberOfFreeChunks(dev) * + (dev->nDataBytesPerChunk / sb->s_blocksize); + } + + buf->f_files = 0; + buf->f_ffree = 0; + buf->f_bavail = buf->f_bfree; + + yaffs_GrossUnlock(dev); + return 0; +} + + + +static void yaffs_FlushInodes(struct super_block *sb) +{ + struct inode *iptr; + yaffs_Object *obj; + + list_for_each_entry(iptr,&sb->s_inodes, i_sb_list){ + obj = yaffs_InodeToObject(iptr); + if(obj){ + T(YAFFS_TRACE_OS, (TSTR("flushing obj %d\n"), + obj->objectId)); + yaffs_FlushFile(obj,1,0); + } + } +} + + +static void yaffs_FlushSuperBlock(struct super_block *sb, int do_checkpoint) +{ + yaffs_Device *dev = yaffs_SuperToDevice(sb); + if(!dev) + return; + + yaffs_FlushInodes(sb); + yaffs_UpdateDirtyDirectories(dev); + yaffs_FlushEntireDeviceCache(dev); + if(do_checkpoint) + yaffs_CheckpointSave(dev); +} + + +static unsigned yaffs_bg_gc_urgency(yaffs_Device *dev) +{ + unsigned erasedChunks = dev->nErasedBlocks * dev->param.nChunksPerBlock; + struct yaffs_LinuxContext *context = yaffs_DeviceToLC(dev); + unsigned scatteredFree = 0; /* Free chunks not in an erased block */ + + if(erasedChunks < dev->nFreeChunks) + scatteredFree = (dev->nFreeChunks - erasedChunks); + + if(!context->bgRunning) + return 0; + else if(scatteredFree < (dev->param.nChunksPerBlock * 2)) + return 0; + else if(erasedChunks > dev->nFreeChunks/2) + return 0; + else if(erasedChunks > dev->nFreeChunks/4) + return 1; + else + return 2; +} + +static int yaffs_do_sync_fs(struct super_block *sb, + int request_checkpoint) +{ + + yaffs_Device *dev = yaffs_SuperToDevice(sb); + unsigned int oneshot_checkpoint = (yaffs_auto_checkpoint & 4); + unsigned gc_urgent = yaffs_bg_gc_urgency(dev); + int do_checkpoint; + + T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND, + (TSTR("yaffs_do_sync_fs: gc-urgency %d %s %s%s\n"), + gc_urgent, + sb->s_dirt ? "dirty" : "clean", + request_checkpoint ? "checkpoint requested" : "no checkpoint", + oneshot_checkpoint ? " one-shot" : "" )); + + yaffs_GrossLock(dev); + do_checkpoint = ((request_checkpoint && !gc_urgent) || + oneshot_checkpoint) && + !dev->isCheckpointed; + + if (sb->s_dirt || do_checkpoint) { + yaffs_FlushSuperBlock(sb, !dev->isCheckpointed && do_checkpoint); + sb->s_dirt = 0; + if(oneshot_checkpoint) + yaffs_auto_checkpoint &= ~4; + } + yaffs_GrossUnlock(dev); + + return 0; +} + +/* + * yaffs background thread functions . + * yaffs_BackgroundThread() the thread function + * yaffs_BackgroundStart() launches the background thread. + * yaffs_BackgroundStop() cleans up the background thread. + * + * NB: + * The thread should only run after the yaffs is initialised + * The thread should be stopped before yaffs is unmounted. + * The thread should not do any writing while the fs is in read only. + */ + +#ifdef YAFFS_COMPILE_BACKGROUND + +void yaffs_background_waker(unsigned long data) +{ + wake_up_process((struct task_struct *)data); +} + +static int yaffs_BackgroundThread(void *data) +{ + yaffs_Device *dev = (yaffs_Device *)data; + struct yaffs_LinuxContext *context = yaffs_DeviceToLC(dev); + unsigned long now = jiffies; + unsigned long next_dir_update = now; + unsigned long next_gc = now; + unsigned long expires; + unsigned int urgency; + + int gcResult; + struct timer_list timer; + + T(YAFFS_TRACE_BACKGROUND, + (TSTR("yaffs_background starting for dev %p\n"), + (void *)dev)); + +#ifdef YAFFS_COMPILE_FREEZER + set_freezable(); +#endif + while(context->bgRunning){ + T(YAFFS_TRACE_BACKGROUND, + (TSTR("yaffs_background\n"))); + + if(kthread_should_stop()) + break; + +#ifdef YAFFS_COMPILE_FREEZER + if(try_to_freeze()) + continue; +#endif + yaffs_GrossLock(dev); + + now = jiffies; + + if(time_after(now, next_dir_update) && yaffs_bg_enable){ + yaffs_UpdateDirtyDirectories(dev); + next_dir_update = now + HZ; + } + + if(time_after(now,next_gc) && yaffs_bg_enable){ + if(!dev->isCheckpointed){ + urgency = yaffs_bg_gc_urgency(dev); + gcResult = yaffs_BackgroundGarbageCollect(dev, urgency); + if(urgency > 1) + next_gc = now + HZ/20+1; + else if(urgency > 0) + next_gc = now + HZ/10+1; + else + next_gc = now + HZ * 2; + } else /* + * gc not running so set to next_dir_update + * to cut down on wake ups + */ + next_gc = next_dir_update; + } + yaffs_GrossUnlock(dev); +#if 1 + expires = next_dir_update; + if (time_before(next_gc,expires)) + expires = next_gc; + if(time_before(expires,now)) + expires = now + HZ; + + Y_INIT_TIMER(&timer); + timer.expires = expires+1; + timer.data = (unsigned long) current; + timer.function = yaffs_background_waker; + + set_current_state(TASK_INTERRUPTIBLE); + add_timer(&timer); + schedule(); + del_timer_sync(&timer); +#else + msleep(10); +#endif + } + + return 0; +} + +static int yaffs_BackgroundStart(yaffs_Device *dev) +{ + int retval = 0; + struct yaffs_LinuxContext *context = yaffs_DeviceToLC(dev); + + if(dev->readOnly) + return -1; + + context->bgRunning = 1; + + context->bgThread = kthread_run(yaffs_BackgroundThread, + (void *)dev,"yaffs-bg-%d",context->mount_id); + + if(IS_ERR(context->bgThread)){ + retval = PTR_ERR(context->bgThread); + context->bgThread = NULL; + context->bgRunning = 0; + } + return retval; +} + +static void yaffs_BackgroundStop(yaffs_Device *dev) +{ + struct yaffs_LinuxContext *ctxt = yaffs_DeviceToLC(dev); + + ctxt->bgRunning = 0; + + if( ctxt->bgThread){ + kthread_stop(ctxt->bgThread); + ctxt->bgThread = NULL; + } +} +#else +static int yaffs_BackgroundThread(void *data) +{ + return 0; +} + +static int yaffs_BackgroundStart(yaffs_Device *dev) +{ + return 0; +} + +static void yaffs_BackgroundStop(yaffs_Device *dev) +{ +} +#endif + + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static void yaffs_write_super(struct super_block *sb) +#else +static int yaffs_write_super(struct super_block *sb) +#endif +{ + unsigned request_checkpoint = (yaffs_auto_checkpoint >= 2); + + T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC | YAFFS_TRACE_BACKGROUND, + (TSTR("yaffs_write_super%s\n"), + request_checkpoint ? " checkpt" : "")); + + yaffs_do_sync_fs(sb, request_checkpoint); + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 18)) + return 0; +#endif +} + + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_sync_fs(struct super_block *sb, int wait) +#else +static int yaffs_sync_fs(struct super_block *sb) +#endif +{ + unsigned request_checkpoint = (yaffs_auto_checkpoint >= 1); + + T(YAFFS_TRACE_OS | YAFFS_TRACE_SYNC, + (TSTR("yaffs_sync_fs%s\n"), + request_checkpoint ? " checkpt" : "")); + + yaffs_do_sync_fs(sb, request_checkpoint); + + return 0; +} + +#ifdef YAFFS_USE_OWN_IGET + +static struct inode *yaffs_iget(struct super_block *sb, unsigned long ino) +{ + struct inode *inode; + yaffs_Object *obj; + yaffs_Device *dev = yaffs_SuperToDevice(sb); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_iget for %lu\n"), ino)); + + inode = iget_locked(sb, ino); + if (!inode) + return ERR_PTR(-ENOMEM); + if (!(inode->i_state & I_NEW)) + return inode; + + /* NB This is called as a side effect of other functions, but + * we had to release the lock to prevent deadlocks, so + * need to lock again. + */ + + yaffs_GrossLock(dev); + + obj = yaffs_FindObjectByNumber(dev, inode->i_ino); + + yaffs_FillInodeFromObject(inode, obj); + + yaffs_GrossUnlock(dev); + + unlock_new_inode(inode); + return inode; +} + +#else + +static void yaffs_read_inode(struct inode *inode) +{ + /* NB This is called as a side effect of other functions, but + * we had to release the lock to prevent deadlocks, so + * need to lock again. + */ + + yaffs_Object *obj; + yaffs_Device *dev = yaffs_SuperToDevice(inode->i_sb); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_read_inode for %d\n"), (int)inode->i_ino)); + + if(current != yaffs_DeviceToLC(dev)->readdirProcess) + yaffs_GrossLock(dev); + + obj = yaffs_FindObjectByNumber(dev, inode->i_ino); + + yaffs_FillInodeFromObject(inode, obj); + + if(current != yaffs_DeviceToLC(dev)->readdirProcess) + yaffs_GrossUnlock(dev); +} + +#endif + +static YLIST_HEAD(yaffs_context_list); +struct semaphore yaffs_context_lock; + +static void yaffs_put_super(struct super_block *sb) +{ + yaffs_Device *dev = yaffs_SuperToDevice(sb); + + T(YAFFS_TRACE_OS, (TSTR("yaffs_put_super\n"))); + + T(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND, + (TSTR("Shutting down yaffs background thread\n"))); + yaffs_BackgroundStop(dev); + T(YAFFS_TRACE_OS | YAFFS_TRACE_BACKGROUND, + (TSTR("yaffs background thread shut down\n"))); + + yaffs_GrossLock(dev); + + yaffs_FlushSuperBlock(sb,1); + + if (yaffs_DeviceToLC(dev)->putSuperFunc) + yaffs_DeviceToLC(dev)->putSuperFunc(sb); + + + yaffs_Deinitialise(dev); + + yaffs_GrossUnlock(dev); + + down(&yaffs_context_lock); + ylist_del_init(&(yaffs_DeviceToLC(dev)->contextList)); + up(&yaffs_context_lock); + + if (yaffs_DeviceToLC(dev)->spareBuffer) { + YFREE(yaffs_DeviceToLC(dev)->spareBuffer); + yaffs_DeviceToLC(dev)->spareBuffer = NULL; + } + + kfree(dev); +} + + +static void yaffs_MTDPutSuper(struct super_block *sb) +{ + struct mtd_info *mtd = yaffs_DeviceToMtd(yaffs_SuperToDevice(sb)); + + if (mtd->sync) + mtd->sync(mtd); + + put_mtd_device(mtd); +} + + +static void yaffs_MarkSuperBlockDirty(yaffs_Device *dev) +{ + struct super_block *sb = yaffs_DeviceToLC(dev)->superBlock; + + T(YAFFS_TRACE_OS, (TSTR("yaffs_MarkSuperBlockDirty() sb = %p\n"), sb)); + if (sb) + sb->s_dirt = 1; +} + +typedef struct { + int inband_tags; + int skip_checkpoint_read; + int skip_checkpoint_write; + int no_cache; + int tags_ecc_on; + int tags_ecc_overridden; + int lazy_loading_enabled; + int lazy_loading_overridden; + int empty_lost_and_found; + int empty_lost_and_found_overridden; +} yaffs_options; + +#define MAX_OPT_LEN 30 +static int yaffs_parse_options(yaffs_options *options, const char *options_str) +{ + char cur_opt[MAX_OPT_LEN + 1]; + int p; + int error = 0; + + /* Parse through the options which is a comma seperated list */ + + while (options_str && *options_str && !error) { + memset(cur_opt, 0, MAX_OPT_LEN + 1); + p = 0; + + while(*options_str == ',') + options_str++; + + while (*options_str && *options_str != ',') { + if (p < MAX_OPT_LEN) { + cur_opt[p] = *options_str; + p++; + } + options_str++; + } + + if (!strcmp(cur_opt, "inband-tags")) + options->inband_tags = 1; + else if (!strcmp(cur_opt, "tags-ecc-off")){ + options->tags_ecc_on = 0; + options->tags_ecc_overridden=1; + } else if (!strcmp(cur_opt, "tags-ecc-on")){ + options->tags_ecc_on = 1; + options->tags_ecc_overridden = 1; + } else if (!strcmp(cur_opt, "lazy-loading-off")){ + options->lazy_loading_enabled = 0; + options->lazy_loading_overridden=1; + } else if (!strcmp(cur_opt, "lazy-loading-on")){ + options->lazy_loading_enabled = 1; + options->lazy_loading_overridden = 1; + } else if (!strcmp(cur_opt, "empty-lost-and-found-off")){ + options->empty_lost_and_found = 0; + options->empty_lost_and_found_overridden=1; + } else if (!strcmp(cur_opt, "empty-lost-and-found-on")){ + options->empty_lost_and_found = 1; + options->empty_lost_and_found_overridden=1; + } else if (!strcmp(cur_opt, "no-cache")) + options->no_cache = 1; + else if (!strcmp(cur_opt, "no-checkpoint-read")) + options->skip_checkpoint_read = 1; + else if (!strcmp(cur_opt, "no-checkpoint-write")) + options->skip_checkpoint_write = 1; + else if (!strcmp(cur_opt, "no-checkpoint")) { + options->skip_checkpoint_read = 1; + options->skip_checkpoint_write = 1; + } else { + printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n", + cur_opt); + error = 1; + } + } + + return error; +} + +static struct super_block *yaffs_internal_read_super(int yaffsVersion, + struct super_block *sb, + void *data, int silent) +{ + int nBlocks; + struct inode *inode = NULL; + struct dentry *root; + yaffs_Device *dev = 0; + char devname_buf[BDEVNAME_SIZE + 1]; + struct mtd_info *mtd; + int err; + char *data_str = (char *)data; + struct yaffs_LinuxContext *context = NULL; + yaffs_DeviceParam *param; + + int readOnly = 0; + + yaffs_options options; + + unsigned mount_id; + int found; + struct yaffs_LinuxContext *context_iterator; + struct ylist_head *l; + + sb->s_magic = YAFFS_MAGIC; + sb->s_op = &yaffs_super_ops; + sb->s_flags |= MS_NOATIME; + + readOnly =((sb->s_flags & MS_RDONLY) != 0); + + +#ifdef YAFFS_COMPILE_EXPORTFS + sb->s_export_op = &yaffs_export_ops; +#endif + + if (!sb) + printk(KERN_INFO "yaffs: sb is NULL\n"); + else if (!sb->s_dev) + printk(KERN_INFO "yaffs: sb->s_dev is NULL\n"); + else if (!yaffs_devname(sb, devname_buf)) + printk(KERN_INFO "yaffs: devname is NULL\n"); + else + printk(KERN_INFO "yaffs: dev is %d name is \"%s\" %s\n", + sb->s_dev, + yaffs_devname(sb, devname_buf), + readOnly ? "ro" : "rw"); + + if (!data_str) + data_str = ""; + + printk(KERN_INFO "yaffs: passed flags \"%s\"\n", data_str); + + memset(&options, 0, sizeof(options)); + + if (yaffs_parse_options(&options, data_str)) { + /* Option parsing failed */ + return NULL; + } + + + sb->s_blocksize = PAGE_CACHE_SIZE; + sb->s_blocksize_bits = PAGE_CACHE_SHIFT; + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_read_super: Using yaffs%d\n"), yaffsVersion)); + T(YAFFS_TRACE_OS, + (TSTR("yaffs_read_super: block size %d\n"), + (int)(sb->s_blocksize))); + + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: Attempting MTD mount of %u.%u,\"%s\"\n"), + MAJOR(sb->s_dev), MINOR(sb->s_dev), + yaffs_devname(sb, devname_buf))); + + /* Check it's an mtd device..... */ + if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR) + return NULL; /* This isn't an mtd device */ + + /* Get the device */ + mtd = get_mtd_device(NULL, MINOR(sb->s_dev)); + if (!mtd) { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: MTD device #%u doesn't appear to exist\n"), + MINOR(sb->s_dev))); + return NULL; + } + /* Check it's NAND */ + if (mtd->type != MTD_NANDFLASH) { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: MTD device is not NAND it's type %d\n"), + mtd->type)); + return NULL; + } + + T(YAFFS_TRACE_OS, (TSTR(" erase %p\n"), mtd->erase)); + T(YAFFS_TRACE_OS, (TSTR(" read %p\n"), mtd->read)); + T(YAFFS_TRACE_OS, (TSTR(" write %p\n"), mtd->write)); + T(YAFFS_TRACE_OS, (TSTR(" readoob %p\n"), mtd->read_oob)); + T(YAFFS_TRACE_OS, (TSTR(" writeoob %p\n"), mtd->write_oob)); + T(YAFFS_TRACE_OS, (TSTR(" block_isbad %p\n"), mtd->block_isbad)); + T(YAFFS_TRACE_OS, (TSTR(" block_markbad %p\n"), mtd->block_markbad)); + T(YAFFS_TRACE_OS, (TSTR(" %s %d\n"), WRITE_SIZE_STR, WRITE_SIZE(mtd))); + T(YAFFS_TRACE_OS, (TSTR(" oobsize %d\n"), mtd->oobsize)); + T(YAFFS_TRACE_OS, (TSTR(" erasesize %d\n"), mtd->erasesize)); +#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 29) + T(YAFFS_TRACE_OS, (TSTR(" size %u\n"), mtd->size)); +#else + T(YAFFS_TRACE_OS, (TSTR(" size %lld\n"), mtd->size)); +#endif + +#ifdef CONFIG_YAFFS_AUTO_YAFFS2 + + if (yaffsVersion == 1 && WRITE_SIZE(mtd) >= 2048) { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: auto selecting yaffs2\n"))); + yaffsVersion = 2; + } + + /* Added NCB 26/5/2006 for completeness */ + if (yaffsVersion == 2 && !options.inband_tags && WRITE_SIZE(mtd) == 512) { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: auto selecting yaffs1\n"))); + yaffsVersion = 1; + } + +#endif + + if (yaffsVersion == 2) { + /* Check for version 2 style functions */ + if (!mtd->erase || + !mtd->block_isbad || + !mtd->block_markbad || + !mtd->read || + !mtd->write || +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) + !mtd->read_oob || !mtd->write_oob) { +#else + !mtd->write_ecc || + !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { +#endif + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: MTD device does not support required " + "functions\n"))); + return NULL; + } + + if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE || + mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) && + !options.inband_tags) { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: MTD device does not have the " + "right page sizes\n"))); + return NULL; + } + } else { + /* Check for V1 style functions */ + if (!mtd->erase || + !mtd->read || + !mtd->write || +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) + !mtd->read_oob || !mtd->write_oob) { +#else + !mtd->write_ecc || + !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) { +#endif + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: MTD device does not support required " + "functions\n"))); + return NULL; + } + + if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK || + mtd->oobsize != YAFFS_BYTES_PER_SPARE) { + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs: MTD device does not support have the " + "right page sizes\n"))); + return NULL; + } + } + + /* OK, so if we got here, we have an MTD that's NAND and looks + * like it has the right capabilities + * Set the yaffs_Device up for mtd + */ + + if (!readOnly && !(mtd->flags & MTD_WRITEABLE)){ + readOnly = 1; + printk(KERN_INFO "yaffs: mtd is read only, setting superblock read only"); + sb->s_flags |= MS_RDONLY; + } + + dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL); + context = kmalloc(sizeof(struct yaffs_LinuxContext),GFP_KERNEL); + + if(!dev || !context ){ + if(dev) + kfree(dev); + if(context) + kfree(context); + dev = NULL; + context = NULL; + } + + if (!dev) { + /* Deep shit could not allocate device structure */ + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs_read_super: Failed trying to allocate " + "yaffs_Device. \n"))); + return NULL; + } + memset(dev, 0, sizeof(yaffs_Device)); + param = &(dev->param); + + memset(context,0,sizeof(struct yaffs_LinuxContext)); + dev->osContext = context; + YINIT_LIST_HEAD(&(context->contextList)); + context->dev = dev; + context->superBlock = sb; + + dev->readOnly = readOnly; + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) + sb->s_fs_info = dev; +#else + sb->u.generic_sbp = dev; +#endif + + dev->driverContext = mtd; + param->name = mtd->name; + + /* Set up the memory size parameters.... */ + + nBlocks = YCALCBLOCKS(mtd->size, (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK)); + + param->startBlock = 0; + param->endBlock = nBlocks - 1; + param->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK; + param->totalBytesPerChunk = YAFFS_BYTES_PER_CHUNK; + param->nReservedBlocks = 5; + param->nShortOpCaches = (options.no_cache) ? 0 : 10; + param->inbandTags = options.inband_tags; + +#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD + param->disableLazyLoad = 1; +#endif +#ifdef CONFIG_YAFFS_XATTR + param->enableXattr = 1; +#endif + if(options.lazy_loading_overridden) + param->disableLazyLoad = !options.lazy_loading_enabled; + +#ifdef CONFIG_YAFFS_DISABLE_TAGS_ECC + param->noTagsECC = 1; +#endif + +#ifdef CONFIG_YAFFS_DISABLE_BACKGROUND +#else + param->deferDirectoryUpdate = 1; +#endif + + if(options.tags_ecc_overridden) + param->noTagsECC = !options.tags_ecc_on; + +#ifdef CONFIG_YAFFS_EMPTY_LOST_AND_FOUND + param->emptyLostAndFound = 1; +#endif + +#ifdef CONFIG_YAFFS_DISABLE_BLOCK_REFRESHING + param->refreshPeriod = 0; +#else + param->refreshPeriod = 500; +#endif + +#ifdef CONFIG_YAFFS__ALWAYS_CHECK_CHUNK_ERASED + param->alwaysCheckErased = 1; +#endif + + if(options.empty_lost_and_found_overridden) + param->emptyLostAndFound = options.empty_lost_and_found; + + /* ... and the functions. */ + if (yaffsVersion == 2) { + param->writeChunkWithTagsToNAND = + nandmtd2_WriteChunkWithTagsToNAND; + param->readChunkWithTagsFromNAND = + nandmtd2_ReadChunkWithTagsFromNAND; + param->markNANDBlockBad = nandmtd2_MarkNANDBlockBad; + param->queryNANDBlock = nandmtd2_QueryNANDBlock; + yaffs_DeviceToLC(dev)->spareBuffer = YMALLOC(mtd->oobsize); + param->isYaffs2 = 1; +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) + param->totalBytesPerChunk = mtd->writesize; + param->nChunksPerBlock = mtd->erasesize / mtd->writesize; +#else + param->totalBytesPerChunk = mtd->oobblock; + param->nChunksPerBlock = mtd->erasesize / mtd->oobblock; +#endif + nBlocks = YCALCBLOCKS(mtd->size, mtd->erasesize); + + param->startBlock = 0; + param->endBlock = nBlocks - 1; + } else { +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) + /* use the MTD interface in yaffs_mtdif1.c */ + param->writeChunkWithTagsToNAND = + nandmtd1_WriteChunkWithTagsToNAND; + param->readChunkWithTagsFromNAND = + nandmtd1_ReadChunkWithTagsFromNAND; + param->markNANDBlockBad = nandmtd1_MarkNANDBlockBad; + param->queryNANDBlock = nandmtd1_QueryNANDBlock; +#else + param->writeChunkToNAND = nandmtd_WriteChunkToNAND; + param->readChunkFromNAND = nandmtd_ReadChunkFromNAND; +#endif + param->isYaffs2 = 0; + } + /* ... and common functions */ + param->eraseBlockInNAND = nandmtd_EraseBlockInNAND; + param->initialiseNAND = nandmtd_InitialiseNAND; + + yaffs_DeviceToLC(dev)->putSuperFunc = yaffs_MTDPutSuper; + + param->markSuperBlockDirty = yaffs_MarkSuperBlockDirty; + param->gcControl = yaffs_gc_control_callback; + + yaffs_DeviceToLC(dev)->superBlock= sb; + + +#ifndef CONFIG_YAFFS_DOES_ECC + param->useNANDECC = 1; +#endif + +#ifdef CONFIG_YAFFS_DISABLE_WIDE_TNODES + param->wideTnodesDisabled = 1; +#endif + + param->skipCheckpointRead = options.skip_checkpoint_read; + param->skipCheckpointWrite = options.skip_checkpoint_write; + + down(&yaffs_context_lock); + /* Get a mount id */ + found = 0; + for(mount_id=0; ! found; mount_id++){ + found = 1; + ylist_for_each(l,&yaffs_context_list){ + context_iterator = ylist_entry(l,struct yaffs_LinuxContext,contextList); + if(context_iterator->mount_id == mount_id) + found = 0; + } + } + context->mount_id = mount_id; + + ylist_add_tail(&(yaffs_DeviceToLC(dev)->contextList), &yaffs_context_list); + up(&yaffs_context_lock); + + /* Directory search handling...*/ + YINIT_LIST_HEAD(&(yaffs_DeviceToLC(dev)->searchContexts)); + param->removeObjectCallback = yaffs_RemoveObjectCallback; + + init_MUTEX(&(yaffs_DeviceToLC(dev)->grossLock)); + + yaffs_GrossLock(dev); + + err = yaffs_GutsInitialise(dev); + + T(YAFFS_TRACE_OS, + (TSTR("yaffs_read_super: guts initialised %s\n"), + (err == YAFFS_OK) ? "OK" : "FAILED")); + + if(err == YAFFS_OK) + yaffs_BackgroundStart(dev); + + if(!context->bgThread) + param->deferDirectoryUpdate = 0; + + + /* Release lock before yaffs_get_inode() */ + yaffs_GrossUnlock(dev); + + /* Create root inode */ + if (err == YAFFS_OK) + inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0, + yaffs_Root(dev)); + + if (!inode) + return NULL; + + inode->i_op = &yaffs_dir_inode_operations; + inode->i_fop = &yaffs_dir_operations; + + T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: got root inode\n"))); + + root = d_alloc_root(inode); + + T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: d_alloc_root done\n"))); + + if (!root) { + iput(inode); + return NULL; + } + sb->s_root = root; + sb->s_dirt = !dev->isCheckpointed; + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs_read_super: isCheckpointed %d\n"), + dev->isCheckpointed)); + + T(YAFFS_TRACE_OS, (TSTR("yaffs_read_super: done\n"))); + return sb; +} + + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data, + int silent) +{ + return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL; +} + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs_read_super(struct file_system_type *fs, + int flags, const char *dev_name, + void *data, struct vfsmount *mnt) +{ + + return get_sb_bdev(fs, flags, dev_name, data, + yaffs_internal_read_super_mtd, mnt); +} +#else +static struct super_block *yaffs_read_super(struct file_system_type *fs, + int flags, const char *dev_name, + void *data) +{ + + return get_sb_bdev(fs, flags, dev_name, data, + yaffs_internal_read_super_mtd); +} +#endif + +static struct file_system_type yaffs_fs_type = { + .owner = THIS_MODULE, + .name = "yaffs", + .get_sb = yaffs_read_super, + .kill_sb = kill_block_super, + .fs_flags = FS_REQUIRES_DEV, +}; +#else +static struct super_block *yaffs_read_super(struct super_block *sb, void *data, + int silent) +{ + return yaffs_internal_read_super(1, sb, data, silent); +} + +static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super, + FS_REQUIRES_DEV); +#endif + + +#ifdef CONFIG_YAFFS_YAFFS2 + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) +static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data, + int silent) +{ + return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL; +} + +#if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 17)) +static int yaffs2_read_super(struct file_system_type *fs, + int flags, const char *dev_name, void *data, + struct vfsmount *mnt) +{ + return get_sb_bdev(fs, flags, dev_name, data, + yaffs2_internal_read_super_mtd, mnt); +} +#else +static struct super_block *yaffs2_read_super(struct file_system_type *fs, + int flags, const char *dev_name, + void *data) +{ + + return get_sb_bdev(fs, flags, dev_name, data, + yaffs2_internal_read_super_mtd); +} +#endif + +static struct file_system_type yaffs2_fs_type = { + .owner = THIS_MODULE, + .name = "yaffs2", + .get_sb = yaffs2_read_super, + .kill_sb = kill_block_super, + .fs_flags = FS_REQUIRES_DEV, +}; +#else +static struct super_block *yaffs2_read_super(struct super_block *sb, + void *data, int silent) +{ + return yaffs_internal_read_super(2, sb, data, silent); +} + +static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super, + FS_REQUIRES_DEV); +#endif + +#endif /* CONFIG_YAFFS_YAFFS2 */ + +static struct proc_dir_entry *my_proc_entry; +static struct proc_dir_entry *debug_proc_entry; + +static char *yaffs_dump_dev_part0(char *buf, yaffs_Device * dev) +{ + buf += sprintf(buf, "startBlock......... %d\n", dev->param.startBlock); + buf += sprintf(buf, "endBlock........... %d\n", dev->param.endBlock); + buf += sprintf(buf, "totalBytesPerChunk. %d\n", dev->param.totalBytesPerChunk); + buf += sprintf(buf, "useNANDECC......... %d\n", dev->param.useNANDECC); + buf += sprintf(buf, "noTagsECC.......... %d\n", dev->param.noTagsECC); + buf += sprintf(buf, "isYaffs2........... %d\n", dev->param.isYaffs2); + buf += sprintf(buf, "inbandTags......... %d\n", dev->param.inbandTags); + buf += sprintf(buf, "emptyLostAndFound.. %d\n", dev->param.emptyLostAndFound); + buf += sprintf(buf, "disableLazyLoad.... %d\n", dev->param.disableLazyLoad); + buf += sprintf(buf, "refreshPeriod...... %d\n", dev->param.refreshPeriod); + buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->param.nShortOpCaches); + buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->param.nReservedBlocks); + buf += sprintf(buf, "alwaysCheckErased.. %d\n", dev->param.alwaysCheckErased); + + buf += sprintf(buf, "\n"); + + return buf; +} + + +static char *yaffs_dump_dev_part1(char *buf, yaffs_Device * dev) +{ + buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk); + buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits); + buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize); + buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks); + buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint); + buf += sprintf(buf, "\n"); + buf += sprintf(buf, "nTnodes............ %d\n", dev->nTnodes); + buf += sprintf(buf, "nObjects........... %d\n", dev->nObjects); + buf += sprintf(buf, "nFreeChunks........ %d\n", dev->nFreeChunks); + buf += sprintf(buf, "\n"); + buf += sprintf(buf, "nPageWrites........ %u\n", dev->nPageWrites); + buf += sprintf(buf, "nPageReads......... %u\n", dev->nPageReads); + buf += sprintf(buf, "nBlockErasures..... %u\n", dev->nBlockErasures); + buf += sprintf(buf, "nGCCopies.......... %u\n", dev->nGCCopies); + buf += sprintf(buf, "allGCs............. %u\n", dev->allGCs); + buf += sprintf(buf, "passiveGCs......... %u\n", dev->passiveGCs); + buf += sprintf(buf, "oldestDirtyGCs..... %u\n", dev->oldestDirtyGCs); + buf += sprintf(buf, "nGCBlocks.......... %u\n", dev->nGCBlocks); + buf += sprintf(buf, "backgroundGCs...... %u\n", dev->backgroundGCs); + buf += sprintf(buf, "nRetriedWrites..... %u\n", dev->nRetriedWrites); + buf += sprintf(buf, "nRetireBlocks...... %u\n", dev->nRetiredBlocks); + buf += sprintf(buf, "eccFixed........... %u\n", dev->eccFixed); + buf += sprintf(buf, "eccUnfixed......... %u\n", dev->eccUnfixed); + buf += sprintf(buf, "tagsEccFixed....... %u\n", dev->tagsEccFixed); + buf += sprintf(buf, "tagsEccUnfixed..... %u\n", dev->tagsEccUnfixed); + buf += sprintf(buf, "cacheHits.......... %u\n", dev->cacheHits); + buf += sprintf(buf, "nDeletedFiles...... %u\n", dev->nDeletedFiles); + buf += sprintf(buf, "nUnlinkedFiles..... %u\n", dev->nUnlinkedFiles); + buf += sprintf(buf, "refreshCount....... %u\n", dev->refreshCount); + buf += + sprintf(buf, "nBackgroudDeletions %u\n", dev->nBackgroundDeletions); + + return buf; +} + +static int yaffs_proc_read(char *page, + char **start, + off_t offset, int count, int *eof, void *data) +{ + struct ylist_head *item; + char *buf = page; + int step = offset; + int n = 0; + + /* Get proc_file_read() to step 'offset' by one on each sucessive call. + * We use 'offset' (*ppos) to indicate where we are in devList. + * This also assumes the user has posted a read buffer large + * enough to hold the complete output; but that's life in /proc. + */ + + *(int *)start = 1; + + /* Print header first */ + if (step == 0) + buf += sprintf(buf, "Multi-version YAFFS built:" __DATE__ " " __TIME__"\n"); + else if (step == 1) + buf += sprintf(buf,"\n"); + else { + step-=2; + + down(&yaffs_context_lock); + + /* Locate and print the Nth entry. Order N-squared but N is small. */ + ylist_for_each(item, &yaffs_context_list) { + struct yaffs_LinuxContext *dc = ylist_entry(item, struct yaffs_LinuxContext, contextList); + yaffs_Device *dev = dc->dev; + + if (n < (step & ~1)) { + n+=2; + continue; + } + if((step & 1)==0){ + buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->param.name); + buf = yaffs_dump_dev_part0(buf, dev); + } else + buf = yaffs_dump_dev_part1(buf, dev); + + break; + } + up(&yaffs_context_lock); + } + + return buf - page < count ? buf - page : count; +} + +static int yaffs_stats_proc_read(char *page, + char **start, + off_t offset, int count, int *eof, void *data) +{ + struct ylist_head *item; + char *buf = page; + int n = 0; + + down(&yaffs_context_lock); + + /* Locate and print the Nth entry. Order N-squared but N is small. */ + ylist_for_each(item, &yaffs_context_list) { + struct yaffs_LinuxContext *dc = ylist_entry(item, struct yaffs_LinuxContext, contextList); + yaffs_Device *dev = dc->dev; + + int erasedChunks; + + erasedChunks = dev->nErasedBlocks * dev->param.nChunksPerBlock; + + buf += sprintf(buf,"%d, %d, %d, %u, %u, %u, %u\n", + n, dev->nFreeChunks, erasedChunks, + dev->backgroundGCs, dev->oldestDirtyGCs, + dev->nObjects, dev->nTnodes); + } + up(&yaffs_context_lock); + + + return buf - page < count ? buf - page : count; +} + +/** + * Set the verbosity of the warnings and error messages. + * + * Note that the names can only be a..z or _ with the current code. + */ + +static struct { + char *mask_name; + unsigned mask_bitfield; +} mask_flags[] = { + {"allocate", YAFFS_TRACE_ALLOCATE}, + {"always", YAFFS_TRACE_ALWAYS}, + {"background", YAFFS_TRACE_BACKGROUND}, + {"bad_blocks", YAFFS_TRACE_BAD_BLOCKS}, + {"buffers", YAFFS_TRACE_BUFFERS}, + {"bug", YAFFS_TRACE_BUG}, + {"checkpt", YAFFS_TRACE_CHECKPOINT}, + {"deletion", YAFFS_TRACE_DELETION}, + {"erase", YAFFS_TRACE_ERASE}, + {"error", YAFFS_TRACE_ERROR}, + {"gc_detail", YAFFS_TRACE_GC_DETAIL}, + {"gc", YAFFS_TRACE_GC}, + {"lock", YAFFS_TRACE_LOCK}, + {"mtd", YAFFS_TRACE_MTD}, + {"nandaccess", YAFFS_TRACE_NANDACCESS}, + {"os", YAFFS_TRACE_OS}, + {"scan_debug", YAFFS_TRACE_SCAN_DEBUG}, + {"scan", YAFFS_TRACE_SCAN}, + {"tracing", YAFFS_TRACE_TRACING}, + {"sync", YAFFS_TRACE_SYNC}, + {"write", YAFFS_TRACE_WRITE}, + + {"verify", YAFFS_TRACE_VERIFY}, + {"verify_nand", YAFFS_TRACE_VERIFY_NAND}, + {"verify_full", YAFFS_TRACE_VERIFY_FULL}, + {"verify_all", YAFFS_TRACE_VERIFY_ALL}, + + {"all", 0xffffffff}, + {"none", 0}, + {NULL, 0}, +}; + +#define MAX_MASK_NAME_LENGTH 40 +static int yaffs_proc_write_trace_options(struct file *file, const char *buf, + unsigned long count, void *data) +{ + unsigned rg = 0, mask_bitfield; + char *end; + char *mask_name; + const char *x; + char substring[MAX_MASK_NAME_LENGTH + 1]; + int i; + int done = 0; + int add, len = 0; + int pos = 0; + + rg = yaffs_traceMask; + + while (!done && (pos < count)) { + done = 1; + while ((pos < count) && isspace(buf[pos])) + pos++; + + switch (buf[pos]) { + case '+': + case '-': + case '=': + add = buf[pos]; + pos++; + break; + + default: + add = ' '; + break; + } + mask_name = NULL; + + mask_bitfield = simple_strtoul(buf + pos, &end, 0); + + if (end > buf + pos) { + mask_name = "numeral"; + len = end - (buf + pos); + pos += len; + done = 0; + } else { + for (x = buf + pos, i = 0; + (*x == '_' || (*x >= 'a' && *x <= 'z')) && + i < MAX_MASK_NAME_LENGTH; x++, i++, pos++) + substring[i] = *x; + substring[i] = '\0'; + + for (i = 0; mask_flags[i].mask_name != NULL; i++) { + if (strcmp(substring, mask_flags[i].mask_name) == 0) { + mask_name = mask_flags[i].mask_name; + mask_bitfield = mask_flags[i].mask_bitfield; + done = 0; + break; + } + } + } + + if (mask_name != NULL) { + done = 0; + switch (add) { + case '-': + rg &= ~mask_bitfield; + break; + case '+': + rg |= mask_bitfield; + break; + case '=': + rg = mask_bitfield; + break; + default: + rg |= mask_bitfield; + break; + } + } + } + + yaffs_traceMask = rg | YAFFS_TRACE_ALWAYS; + + printk(KERN_DEBUG "new trace = 0x%08X\n", yaffs_traceMask); + + if (rg & YAFFS_TRACE_ALWAYS) { + for (i = 0; mask_flags[i].mask_name != NULL; i++) { + char flag; + flag = ((rg & mask_flags[i].mask_bitfield) == + mask_flags[i].mask_bitfield) ? '+' : '-'; + printk(KERN_DEBUG "%c%s\n", flag, mask_flags[i].mask_name); + } + } + + return count; +} + + +static int yaffs_proc_write(struct file *file, const char *buf, + unsigned long count, void *data) +{ + return yaffs_proc_write_trace_options(file, buf, count, data); +} + +/* Stuff to handle installation of file systems */ +struct file_system_to_install { + struct file_system_type *fst; + int installed; +}; + +static struct file_system_to_install fs_to_install[] = { + {&yaffs_fs_type, 0}, + {&yaffs2_fs_type, 0}, + {NULL, 0} +}; + +static int __init init_yaffs_fs(void) +{ + int error = 0; + struct file_system_to_install *fsinst; + + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs built " __DATE__ " " __TIME__ " Installing. \n"))); + +#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED + T(YAFFS_TRACE_ALWAYS, + (TSTR(" \n\n\n\nYAFFS-WARNING CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED selected.\n\n\n\n"))); +#endif + + + + + init_MUTEX(&yaffs_context_lock); + + /* Install the proc_fs entries */ + my_proc_entry = create_proc_entry("yaffs", + S_IRUGO | S_IFREG, + YPROC_ROOT); + + if (my_proc_entry) { + my_proc_entry->write_proc = yaffs_proc_write; + my_proc_entry->read_proc = yaffs_proc_read; + my_proc_entry->data = NULL; + } else + return -ENOMEM; + + debug_proc_entry = create_proc_entry("yaffs_stats", + S_IRUGO | S_IFREG, + YPROC_ROOT); + + if (debug_proc_entry) { + debug_proc_entry->write_proc = NULL; + debug_proc_entry->read_proc = yaffs_stats_proc_read; + debug_proc_entry->data = NULL; + } else + return -ENOMEM; + + /* Now add the file system entries */ + + fsinst = fs_to_install; + + while (fsinst->fst && !error) { + error = register_filesystem(fsinst->fst); + if (!error) + fsinst->installed = 1; + fsinst++; + } + + /* Any errors? uninstall */ + if (error) { + fsinst = fs_to_install; + + while (fsinst->fst) { + if (fsinst->installed) { + unregister_filesystem(fsinst->fst); + fsinst->installed = 0; + } + fsinst++; + } + } + + return error; +} + +static void __exit exit_yaffs_fs(void) +{ + + struct file_system_to_install *fsinst; + + T(YAFFS_TRACE_ALWAYS, + (TSTR("yaffs built " __DATE__ " " __TIME__ " removing. \n"))); + + remove_proc_entry("yaffs", YPROC_ROOT); + remove_proc_entry("yaffs_stats", YPROC_ROOT); + + fsinst = fs_to_install; + + while (fsinst->fst) { + if (fsinst->installed) { + unregister_filesystem(fsinst->fst); + fsinst->installed = 0; + } + fsinst++; + } +} + +module_init(init_yaffs_fs) +module_exit(exit_yaffs_fs) + +MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system"); +MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2010"); +MODULE_LICENSE("GPL"); diff --git a/fs/yaffs2/yaffs_yaffs1.c b/fs/yaffs2/yaffs_yaffs1.c new file mode 100644 index 00000000..642fd5a4 --- /dev/null +++ b/fs/yaffs2/yaffs_yaffs1.c @@ -0,0 +1,466 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include "yaffs_yaffs1.h" +#include "yportenv.h" +#include "yaffs_trace.h" +#include "yaffs_bitmap.h" +#include "yaffs_getblockinfo.h" +#include "yaffs_nand.h" + + +int yaffs1_Scan(yaffs_Device *dev) +{ + yaffs_ExtendedTags tags; + int blk; + int blockIterator; + int startIterator; + int endIterator; + int result; + + int chunk; + int c; + int deleted; + yaffs_BlockState state; + yaffs_Object *hardList = NULL; + yaffs_BlockInfo *bi; + __u32 sequenceNumber; + yaffs_ObjectHeader *oh; + yaffs_Object *in; + yaffs_Object *parent; + + int alloc_failed = 0; + + struct yaffs_ShadowFixerStruct *shadowFixerList = NULL; + + + __u8 *chunkData; + + + + T(YAFFS_TRACE_SCAN, + (TSTR("yaffs1_Scan starts intstartblk %d intendblk %d..." TENDSTR), + dev->internalStartBlock, dev->internalEndBlock)); + + chunkData = yaffs_GetTempBuffer(dev, __LINE__); + + dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER; + + /* Scan all the blocks to determine their state */ + bi = dev->blockInfo; + for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) { + yaffs_ClearChunkBits(dev, blk); + bi->pagesInUse = 0; + bi->softDeletions = 0; + + yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber); + + bi->blockState = state; + bi->sequenceNumber = sequenceNumber; + + if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK) + bi->blockState = state = YAFFS_BLOCK_STATE_DEAD; + + T(YAFFS_TRACE_SCAN_DEBUG, + (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, + state, sequenceNumber)); + + if (state == YAFFS_BLOCK_STATE_DEAD) { + T(YAFFS_TRACE_BAD_BLOCKS, + (TSTR("block %d is bad" TENDSTR), blk)); + } else if (state == YAFFS_BLOCK_STATE_EMPTY) { + T(YAFFS_TRACE_SCAN_DEBUG, + (TSTR("Block empty " TENDSTR))); + dev->nErasedBlocks++; + dev->nFreeChunks += dev->param.nChunksPerBlock; + } + bi++; + } + + startIterator = dev->internalStartBlock; + endIterator = dev->internalEndBlock; + + /* For each block.... */ + for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator; + blockIterator++) { + + YYIELD(); + + YYIELD(); + + blk = blockIterator; + + bi = yaffs_GetBlockInfo(dev, blk); + state = bi->blockState; + + deleted = 0; + + /* For each chunk in each block that needs scanning....*/ + for (c = 0; !alloc_failed && c < dev->param.nChunksPerBlock && + state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) { + /* Read the tags and decide what to do */ + chunk = blk * dev->param.nChunksPerBlock + c; + + result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL, + &tags); + + /* Let's have a good look at this chunk... */ + + if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED || tags.chunkDeleted) { + /* YAFFS1 only... + * A deleted chunk + */ + deleted++; + dev->nFreeChunks++; + /*T((" %d %d deleted\n",blk,c)); */ + } else if (!tags.chunkUsed) { + /* An unassigned chunk in the block + * This means that either the block is empty or + * this is the one being allocated from + */ + + if (c == 0) { + /* We're looking at the first chunk in the block so the block is unused */ + state = YAFFS_BLOCK_STATE_EMPTY; + dev->nErasedBlocks++; + } else { + /* this is the block being allocated from */ + T(YAFFS_TRACE_SCAN, + (TSTR + (" Allocating from %d %d" TENDSTR), + blk, c)); + state = YAFFS_BLOCK_STATE_ALLOCATING; + dev->allocationBlock = blk; + dev->allocationPage = c; + dev->allocationBlockFinder = blk; + /* Set block finder here to encourage the allocator to go forth from here. */ + + } + + dev->nFreeChunks += (dev->param.nChunksPerBlock - c); + } else if (tags.chunkId > 0) { + /* chunkId > 0 so it is a data chunk... */ + unsigned int endpos; + + yaffs_SetChunkBit(dev, blk, c); + bi->pagesInUse++; + + in = yaffs_FindOrCreateObjectByNumber(dev, + tags. + objectId, + YAFFS_OBJECT_TYPE_FILE); + /* PutChunkIntoFile checks for a clash (two data chunks with + * the same chunkId). + */ + + if (!in) + alloc_failed = 1; + + if (in) { + if (!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk, 1)) + alloc_failed = 1; + } + + endpos = + (tags.chunkId - 1) * dev->nDataBytesPerChunk + + tags.byteCount; + if (in && + in->variantType == YAFFS_OBJECT_TYPE_FILE + && in->variant.fileVariant.scannedFileSize < + endpos) { + in->variant.fileVariant. + scannedFileSize = endpos; + if (!dev->param.useHeaderFileSize) { + in->variant.fileVariant. + fileSize = + in->variant.fileVariant. + scannedFileSize; + } + + } + /* T((" %d %d data %d %d\n",blk,c,tags.objectId,tags.chunkId)); */ + } else { + /* chunkId == 0, so it is an ObjectHeader. + * Thus, we read in the object header and make the object + */ + yaffs_SetChunkBit(dev, blk, c); + bi->pagesInUse++; + + result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, + chunkData, + NULL); + + oh = (yaffs_ObjectHeader *) chunkData; + + in = yaffs_FindObjectByNumber(dev, + tags.objectId); + if (in && in->variantType != oh->type) { + /* This should not happen, but somehow + * Wev'e ended up with an objectId that has been reused but not yet + * deleted, and worse still it has changed type. Delete the old object. + */ + + yaffs_DeleteObject(in); + + in = 0; + } + + in = yaffs_FindOrCreateObjectByNumber(dev, + tags. + objectId, + oh->type); + + if (!in) + alloc_failed = 1; + + if (in && oh->shadowsObject > 0) { + + struct yaffs_ShadowFixerStruct *fixer; + fixer = YMALLOC(sizeof(struct yaffs_ShadowFixerStruct)); + if (fixer) { + fixer->next = shadowFixerList; + shadowFixerList = fixer; + fixer->objectId = tags.objectId; + fixer->shadowedId = oh->shadowsObject; + T(YAFFS_TRACE_SCAN, + (TSTR + (" Shadow fixer: %d shadows %d" TENDSTR), + fixer->objectId, fixer->shadowedId)); + + } + + } + + if (in && in->valid) { + /* We have already filled this one. We have a duplicate and need to resolve it. */ + + unsigned existingSerial = in->serial; + unsigned newSerial = tags.serialNumber; + + if (((existingSerial + 1) & 3) == newSerial) { + /* Use new one - destroy the exisiting one */ + yaffs_DeleteChunk(dev, + in->hdrChunk, + 1, __LINE__); + in->valid = 0; + } else { + /* Use existing - destroy this one. */ + yaffs_DeleteChunk(dev, chunk, 1, + __LINE__); + } + } + + if (in && !in->valid && + (tags.objectId == YAFFS_OBJECTID_ROOT || + tags.objectId == YAFFS_OBJECTID_LOSTNFOUND)) { + /* We only load some info, don't fiddle with directory structure */ + in->valid = 1; + in->variantType = oh->type; + + in->yst_mode = oh->yst_mode; +#ifdef CONFIG_YAFFS_WINCE + in->win_atime[0] = oh->win_atime[0]; + in->win_ctime[0] = oh->win_ctime[0]; + in->win_mtime[0] = oh->win_mtime[0]; + in->win_atime[1] = oh->win_atime[1]; + in->win_ctime[1] = oh->win_ctime[1]; + in->win_mtime[1] = oh->win_mtime[1]; +#else + in->yst_uid = oh->yst_uid; + in->yst_gid = oh->yst_gid; + in->yst_atime = oh->yst_atime; + in->yst_mtime = oh->yst_mtime; + in->yst_ctime = oh->yst_ctime; + in->yst_rdev = oh->yst_rdev; +#endif + in->hdrChunk = chunk; + in->serial = tags.serialNumber; + + } else if (in && !in->valid) { + /* we need to load this info */ + + in->valid = 1; + in->variantType = oh->type; + + in->yst_mode = oh->yst_mode; +#ifdef CONFIG_YAFFS_WINCE + in->win_atime[0] = oh->win_atime[0]; + in->win_ctime[0] = oh->win_ctime[0]; + in->win_mtime[0] = oh->win_mtime[0]; + in->win_atime[1] = oh->win_atime[1]; + in->win_ctime[1] = oh->win_ctime[1]; + in->win_mtime[1] = oh->win_mtime[1]; +#else + in->yst_uid = oh->yst_uid; + in->yst_gid = oh->yst_gid; + in->yst_atime = oh->yst_atime; + in->yst_mtime = oh->yst_mtime; + in->yst_ctime = oh->yst_ctime; + in->yst_rdev = oh->yst_rdev; +#endif + in->hdrChunk = chunk; + in->serial = tags.serialNumber; + + yaffs_SetObjectNameFromOH(in, oh); + in->dirty = 0; + + /* directory stuff... + * hook up to parent + */ + + parent = + yaffs_FindOrCreateObjectByNumber + (dev, oh->parentObjectId, + YAFFS_OBJECT_TYPE_DIRECTORY); + if (!parent) + alloc_failed = 1; + if (parent && parent->variantType == + YAFFS_OBJECT_TYPE_UNKNOWN) { + /* Set up as a directory */ + parent->variantType = + YAFFS_OBJECT_TYPE_DIRECTORY; + YINIT_LIST_HEAD(&parent->variant. + directoryVariant. + children); + } else if (!parent || parent->variantType != + YAFFS_OBJECT_TYPE_DIRECTORY) { + /* Hoosterman, another problem.... + * We're trying to use a non-directory as a directory + */ + + T(YAFFS_TRACE_ERROR, + (TSTR + ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." + TENDSTR))); + parent = dev->lostNFoundDir; + } + + yaffs_AddObjectToDirectory(parent, in); + + if (0 && (parent == dev->deletedDir || + parent == dev->unlinkedDir)) { + in->deleted = 1; /* If it is unlinked at start up then it wants deleting */ + dev->nDeletedFiles++; + } + /* Note re hardlinks. + * Since we might scan a hardlink before its equivalent object is scanned + * we put them all in a list. + * After scanning is complete, we should have all the objects, so we run through this + * list and fix up all the chains. + */ + + switch (in->variantType) { + case YAFFS_OBJECT_TYPE_UNKNOWN: + /* Todo got a problem */ + break; + case YAFFS_OBJECT_TYPE_FILE: + if (dev->param.useHeaderFileSize) + + in->variant.fileVariant. + fileSize = + oh->fileSize; + + break; + case YAFFS_OBJECT_TYPE_HARDLINK: + in->variant.hardLinkVariant. + equivalentObjectId = + oh->equivalentObjectId; + in->hardLinks.next = + (struct ylist_head *) + hardList; + hardList = in; + break; + case YAFFS_OBJECT_TYPE_DIRECTORY: + /* Do nothing */ + break; + case YAFFS_OBJECT_TYPE_SPECIAL: + /* Do nothing */ + break; + case YAFFS_OBJECT_TYPE_SYMLINK: + in->variant.symLinkVariant.alias = + yaffs_CloneString(oh->alias); + if (!in->variant.symLinkVariant.alias) + alloc_failed = 1; + break; + } + + } + } + } + + if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { + /* If we got this far while scanning, then the block is fully allocated.*/ + state = YAFFS_BLOCK_STATE_FULL; + } + + if (state == YAFFS_BLOCK_STATE_ALLOCATING) { + /* If the block was partially allocated then treat it as fully allocated.*/ + state = YAFFS_BLOCK_STATE_FULL; + dev->allocationBlock = -1; + } + + bi->blockState = state; + + /* Now let's see if it was dirty */ + if (bi->pagesInUse == 0 && + !bi->hasShrinkHeader && + bi->blockState == YAFFS_BLOCK_STATE_FULL) { + yaffs_BlockBecameDirty(dev, blk); + } + + } + + + /* Ok, we've done all the scanning. + * Fix up the hard link chains. + * We should now have scanned all the objects, now it's time to add these + * hardlinks. + */ + + yaffs_HardlinkFixup(dev, hardList); + + /* Fix up any shadowed objects */ + { + struct yaffs_ShadowFixerStruct *fixer; + yaffs_Object *obj; + + while (shadowFixerList) { + fixer = shadowFixerList; + shadowFixerList = fixer->next; + /* Complete the rename transaction by deleting the shadowed object + * then setting the object header to unshadowed. + */ + obj = yaffs_FindObjectByNumber(dev, fixer->shadowedId); + if (obj) + yaffs_DeleteObject(obj); + + obj = yaffs_FindObjectByNumber(dev, fixer->objectId); + + if (obj) + yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0, NULL); + + YFREE(fixer); + } + } + + yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); + + if (alloc_failed) + return YAFFS_FAIL; + + T(YAFFS_TRACE_SCAN, (TSTR("yaffs1_Scan ends" TENDSTR))); + + + return YAFFS_OK; +} + diff --git a/fs/yaffs2/yaffs_yaffs1.h b/fs/yaffs2/yaffs_yaffs1.h new file mode 100644 index 00000000..9769eed3 --- /dev/null +++ b/fs/yaffs2/yaffs_yaffs1.h @@ -0,0 +1,22 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +#ifndef __YAFFS_YAFFS1_H__ +#define __YAFFS_YAFFS1_H__ + +#include "yaffs_guts.h" +int yaffs1_Scan(yaffs_Device *dev); + +#endif diff --git a/fs/yaffs2/yaffs_yaffs2.c b/fs/yaffs2/yaffs_yaffs2.c new file mode 100644 index 00000000..e13dd41c --- /dev/null +++ b/fs/yaffs2/yaffs_yaffs2.c @@ -0,0 +1,1540 @@ +/* + * YAFFS: Yet Another Flash File System. A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + + +#include "yaffs_guts.h" +#include "yaffs_trace.h" +#include "yaffs_yaffs2.h" +#include "yaffs_checkptrw.h" +#include "yaffs_bitmap.h" +#include "yaffs_qsort.h" +#include "yaffs_nand.h" +#include "yaffs_getblockinfo.h" +#include "yaffs_verify.h" + +/* + * Checkpoints are really no benefit on very small partitions. + * + * To save space on small partitions don't bother with checkpoints unless + * the partition is at least this big. + */ +#define YAFFS_CHECKPOINT_MIN_BLOCKS 60 + +#define YAFFS_SMALL_HOLE_THRESHOLD 4 + + +/* + * Oldest Dirty Sequence Number handling. + */ + +/* yaffs2_CalcOldestDirtySequence() + * yaffs2_FindOldestDirtySequence() + * Calculate the oldest dirty sequence number if we don't know it. + */ +void yaffs2_CalcOldestDirtySequence(yaffs_Device *dev) +{ + int i; + unsigned seq; + unsigned blockNo = 0; + yaffs_BlockInfo *b; + + if(!dev->param.isYaffs2) + return; + + /* Find the oldest dirty sequence number. */ + seq = dev->sequenceNumber + 1; + b = dev->blockInfo; + for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) { + if (b->blockState == YAFFS_BLOCK_STATE_FULL && + (b->pagesInUse - b->softDeletions) < dev->param.nChunksPerBlock && + b->sequenceNumber < seq) { + seq = b->sequenceNumber; + blockNo = i; + } + b++; + } + + if(blockNo){ + dev->oldestDirtySequence = seq; + dev->oldestDirtyBlock = blockNo; + } + +} + + +void yaffs2_FindOldestDirtySequence(yaffs_Device *dev) +{ + if(!dev->param.isYaffs2) + return; + + if(!dev->oldestDirtySequence) + yaffs2_CalcOldestDirtySequence(dev); +} + +/* + * yaffs_ClearOldestDirtySequence() + * Called when a block is erased or marked bad. (ie. when its sequenceNumber + * becomes invalid). If the value matches the oldest then we clear + * dev->oldestDirtySequence to force its recomputation. + */ +void yaffs2_ClearOldestDirtySequence(yaffs_Device *dev, yaffs_BlockInfo *bi) +{ + + if(!dev->param.isYaffs2) + return; + + if(!bi || bi->sequenceNumber == dev->oldestDirtySequence){ + dev->oldestDirtySequence = 0; + dev->oldestDirtyBlock = 0; + } +} + +/* + * yaffs2_UpdateOldestDirtySequence() + * Update the oldest dirty sequence number whenever we dirty a block. + * Only do this if the oldestDirtySequence is actually being tracked. + */ +void yaffs2_UpdateOldestDirtySequence(yaffs_Device *dev, unsigned blockNo, yaffs_BlockInfo *bi) +{ + if(!dev->param.isYaffs2) + return; + + if(dev->oldestDirtySequence){ + if(dev->oldestDirtySequence > bi->sequenceNumber){ + dev->oldestDirtySequence = bi->sequenceNumber; + dev->oldestDirtyBlock = blockNo; + } + } +} + +int yaffs2_BlockNotDisqualifiedFromGC(yaffs_Device *dev, + yaffs_BlockInfo *bi) +{ + + if (!dev->param.isYaffs2) + return 1; /* disqualification only applies to yaffs2. */ + + if (!bi->hasShrinkHeader) + return 1; /* can gc */ + + yaffs2_FindOldestDirtySequence(dev); + + /* Can't do gc of this block if there are any blocks older than this one that have + * discarded pages. + */ + return (bi->sequenceNumber <= dev->oldestDirtySequence); +} + +/* + * yaffs2_FindRefreshBlock() + * periodically finds the oldest full block by sequence number for refreshing. + * Only for yaffs2. + */ +__u32 yaffs2_FindRefreshBlock(yaffs_Device *dev) +{ + __u32 b ; + + __u32 oldest = 0; + __u32 oldestSequence = 0; + + yaffs_BlockInfo *bi; + + if(!dev->param.isYaffs2) + return oldest; + + /* + * If refresh period < 10 then refreshing is disabled. + */ + if(dev->param.refreshPeriod < 10) + return oldest; + + /* + * Fix broken values. + */ + if(dev->refreshSkip > dev->param.refreshPeriod) + dev->refreshSkip = dev->param.refreshPeriod; + + if(dev->refreshSkip > 0) + return oldest; + + /* + * Refresh skip is now zero. + * We'll do a refresh this time around.... + * Update the refresh skip and find the oldest block. + */ + dev->refreshSkip = dev->param.refreshPeriod; + dev->refreshCount++; + bi = dev->blockInfo; + for (b = dev->internalStartBlock; b <=dev->internalEndBlock; b++){ + + if (bi->blockState == YAFFS_BLOCK_STATE_FULL){ + + if(oldest < 1 || + bi->sequenceNumber < oldestSequence){ + oldest = b; + oldestSequence = bi->sequenceNumber; + } + } + bi++; + } + + if (oldest > 0) { + T(YAFFS_TRACE_GC, + (TSTR("GC refresh count %d selected block %d with sequenceNumber %d" TENDSTR), + dev->refreshCount, oldest, oldestSequence)); + } + + return oldest; +} + +int yaffs2_CheckpointRequired(yaffs_Device *dev) +{ + int nblocks; + + if(!dev->param.isYaffs2) + return 0; + + nblocks = dev->internalEndBlock - dev->internalStartBlock + 1 ; + + return !dev->param.skipCheckpointWrite && + !dev->readOnly && + (nblocks >= YAFFS_CHECKPOINT_MIN_BLOCKS); +} + +int yaffs2_CalcCheckpointBlocksRequired(yaffs_Device *dev) +{ + int retval; + + if(!dev->param.isYaffs2) + return 0; + + if (!dev->nCheckpointBlocksRequired && + yaffs2_CheckpointRequired(dev)){ + /* Not a valid value so recalculate */ + int nBytes = 0; + int nBlocks; + int devBlocks = (dev->param.endBlock - dev->param.startBlock + 1); + + nBytes += sizeof(yaffs_CheckpointValidity); + nBytes += sizeof(yaffs_CheckpointDevice); + nBytes += devBlocks * sizeof(yaffs_BlockInfo); + nBytes += devBlocks * dev->chunkBitmapStride; + nBytes += (sizeof(yaffs_CheckpointObject) + sizeof(__u32)) * (dev->nObjects); + nBytes += (dev->tnodeSize + sizeof(__u32)) * (dev->nTnodes); + nBytes += sizeof(yaffs_CheckpointValidity); + nBytes += sizeof(__u32); /* checksum*/ + + /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */ + + nBlocks = (nBytes/(dev->nDataBytesPerChunk * dev->param.nChunksPerBlock)) + 3; + + dev->nCheckpointBlocksRequired = nBlocks; + } + + retval = dev->nCheckpointBlocksRequired - dev->blocksInCheckpoint; + if(retval < 0) + retval = 0; + return retval; +} + +/*--------------------- Checkpointing --------------------*/ + + +static int yaffs2_WriteCheckpointValidityMarker(yaffs_Device *dev, int head) +{ + yaffs_CheckpointValidity cp; + + memset(&cp, 0, sizeof(cp)); + + cp.structType = sizeof(cp); + cp.magic = YAFFS_MAGIC; + cp.version = YAFFS_CHECKPOINT_VERSION; + cp.head = (head) ? 1 : 0; + + return (yaffs2_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)) ? + 1 : 0; +} + +static int yaffs2_ReadCheckpointValidityMarker(yaffs_Device *dev, int head) +{ + yaffs_CheckpointValidity cp; + int ok; + + ok = (yaffs2_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp)); + + if (ok) + ok = (cp.structType == sizeof(cp)) && + (cp.magic == YAFFS_MAGIC) && + (cp.version == YAFFS_CHECKPOINT_VERSION) && + (cp.head == ((head) ? 1 : 0)); + return ok ? 1 : 0; +} + +static void yaffs2_DeviceToCheckpointDevice(yaffs_CheckpointDevice *cp, + yaffs_Device *dev) +{ + cp->nErasedBlocks = dev->nErasedBlocks; + cp->allocationBlock = dev->allocationBlock; + cp->allocationPage = dev->allocationPage; + cp->nFreeChunks = dev->nFreeChunks; + + cp->nDeletedFiles = dev->nDeletedFiles; + cp->nUnlinkedFiles = dev->nUnlinkedFiles; + cp->nBackgroundDeletions = dev->nBackgroundDeletions; + cp->sequenceNumber = dev->sequenceNumber; + +} + +static void yaffs2_CheckpointDeviceToDevice(yaffs_Device *dev, + yaffs_CheckpointDevice *cp) +{ + dev->nErasedBlocks = cp->nErasedBlocks; + dev->allocationBlock = cp->allocationBlock; + dev->allocationPage = cp->allocationPage; + dev->nFreeChunks = cp->nFreeChunks; + + dev->nDeletedFiles = cp->nDeletedFiles; + dev->nUnlinkedFiles = cp->nUnlinkedFiles; + dev->nBackgroundDeletions = cp->nBackgroundDeletions; + dev->sequenceNumber = cp->sequenceNumber; +} + + +static int yaffs2_WriteCheckpointDevice(yaffs_Device *dev) +{ + yaffs_CheckpointDevice cp; + __u32 nBytes; + __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1); + + int ok; + + /* Write device runtime values*/ + yaffs2_DeviceToCheckpointDevice(&cp, dev); + cp.structType = sizeof(cp); + + ok = (yaffs2_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)); + + /* Write block info */ + if (ok) { + nBytes = nBlocks * sizeof(yaffs_BlockInfo); + ok = (yaffs2_CheckpointWrite(dev, dev->blockInfo, nBytes) == nBytes); + } + + /* Write chunk bits */ + if (ok) { + nBytes = nBlocks * dev->chunkBitmapStride; + ok = (yaffs2_CheckpointWrite(dev, dev->chunkBits, nBytes) == nBytes); + } + return ok ? 1 : 0; + +} + +static int yaffs2_ReadCheckpointDevice(yaffs_Device *dev) +{ + yaffs_CheckpointDevice cp; + __u32 nBytes; + __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1); + + int ok; + + ok = (yaffs2_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp)); + if (!ok) + return 0; + + if (cp.structType != sizeof(cp)) + return 0; + + + yaffs2_CheckpointDeviceToDevice(dev, &cp); + + nBytes = nBlocks * sizeof(yaffs_BlockInfo); + + ok = (yaffs2_CheckpointRead(dev, dev->blockInfo, nBytes) == nBytes); + + if (!ok) + return 0; + nBytes = nBlocks * dev->chunkBitmapStride; + + ok = (yaffs2_CheckpointRead(dev, dev->chunkBits, nBytes) == nBytes); + + return ok ? 1 : 0; +} + +static void yaffs2_ObjectToCheckpointObject(yaffs_CheckpointObject *cp, + yaffs_Object *obj) +{ + + cp->objectId = obj->objectId; + cp->parentId = (obj->parent) ? obj->parent->objectId : 0; + cp->hdrChunk = obj->hdrChunk; + cp->variantType = obj->variantType; + cp->deleted = obj->deleted; + cp->softDeleted = obj->softDeleted; + cp->unlinked = obj->unlinked; + cp->fake = obj->fake; + cp->renameAllowed = obj->renameAllowed; + cp->unlinkAllowed = obj->unlinkAllowed; + cp->serial = obj->serial; + cp->nDataChunks = obj->nDataChunks; + + if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) + cp->fileSizeOrEquivalentObjectId = obj->variant.fileVariant.fileSize; + else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) + cp->fileSizeOrEquivalentObjectId = obj->variant.hardLinkVariant.equivalentObjectId; +} + +static int yaffs2_CheckpointObjectToObject(yaffs_Object *obj, yaffs_CheckpointObject *cp) +{ + + yaffs_Object *parent; + + if (obj->variantType != cp->variantType) { + T(YAFFS_TRACE_ERROR, (TSTR("Checkpoint read object %d type %d " + TCONT("chunk %d does not match existing object type %d") + TENDSTR), cp->objectId, cp->variantType, cp->hdrChunk, + obj->variantType)); + return 0; + } + + obj->objectId = cp->objectId; + + if (cp->parentId) + parent = yaffs_FindOrCreateObjectByNumber( + obj->myDev, + cp->parentId, + YAFFS_OBJECT_TYPE_DIRECTORY); + else + parent = NULL; + + if (parent) { + if (parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) { + T(YAFFS_TRACE_ALWAYS, (TSTR("Checkpoint read object %d parent %d type %d" + TCONT(" chunk %d Parent type, %d, not directory") + TENDSTR), + cp->objectId, cp->parentId, cp->variantType, + cp->hdrChunk, parent->variantType)); + return 0; + } + yaffs_AddObjectToDirectory(parent, obj); + } + + obj->hdrChunk = cp->hdrChunk; + obj->variantType = cp->variantType; + obj->deleted = cp->deleted; + obj->softDeleted = cp->softDeleted; + obj->unlinked = cp->unlinked; + obj->fake = cp->fake; + obj->renameAllowed = cp->renameAllowed; + obj->unlinkAllowed = cp->unlinkAllowed; + obj->serial = cp->serial; + obj->nDataChunks = cp->nDataChunks; + + if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) + obj->variant.fileVariant.fileSize = cp->fileSizeOrEquivalentObjectId; + else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) + obj->variant.hardLinkVariant.equivalentObjectId = cp->fileSizeOrEquivalentObjectId; + + if (obj->hdrChunk > 0) + obj->lazyLoaded = 1; + return 1; +} + + + +static int yaffs2_CheckpointTnodeWorker(yaffs_Object *in, yaffs_Tnode *tn, + __u32 level, int chunkOffset) +{ + int i; + yaffs_Device *dev = in->myDev; + int ok = 1; + + if (tn) { + if (level > 0) { + + for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++) { + if (tn->internal[i]) { + ok = yaffs2_CheckpointTnodeWorker(in, + tn->internal[i], + level - 1, + (chunkOffset<tnodeSize) == dev->tnodeSize); + } + } + + return ok; + +} + +static int yaffs2_WriteCheckpointTnodes(yaffs_Object *obj) +{ + __u32 endMarker = ~0; + int ok = 1; + + if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) { + ok = yaffs2_CheckpointTnodeWorker(obj, + obj->variant.fileVariant.top, + obj->variant.fileVariant.topLevel, + 0); + if (ok) + ok = (yaffs2_CheckpointWrite(obj->myDev, &endMarker, sizeof(endMarker)) == + sizeof(endMarker)); + } + + return ok ? 1 : 0; +} + +static int yaffs2_ReadCheckpointTnodes(yaffs_Object *obj) +{ + __u32 baseChunk; + int ok = 1; + yaffs_Device *dev = obj->myDev; + yaffs_FileStructure *fileStructPtr = &obj->variant.fileVariant; + yaffs_Tnode *tn; + int nread = 0; + + ok = (yaffs2_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); + + while (ok && (~baseChunk)) { + nread++; + /* Read level 0 tnode */ + + + tn = yaffs_GetTnode(dev); + if (tn){ + ok = (yaffs2_CheckpointRead(dev, tn, dev->tnodeSize) == dev->tnodeSize); + } else + ok = 0; + + if (tn && ok) + ok = yaffs_AddOrFindLevel0Tnode(dev, + fileStructPtr, + baseChunk, + tn) ? 1 : 0; + + if (ok) + ok = (yaffs2_CheckpointRead(dev, &baseChunk, sizeof(baseChunk)) == sizeof(baseChunk)); + + } + + T(YAFFS_TRACE_CHECKPOINT, ( + TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR), + nread, baseChunk, ok)); + + return ok ? 1 : 0; +} + + +static int yaffs2_WriteCheckpointObjects(yaffs_Device *dev) +{ + yaffs_Object *obj; + yaffs_CheckpointObject cp; + int i; + int ok = 1; + struct ylist_head *lh; + + + /* Iterate through the objects in each hash entry, + * dumping them to the checkpointing stream. + */ + + for (i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++) { + ylist_for_each(lh, &dev->objectBucket[i].list) { + if (lh) { + obj = ylist_entry(lh, yaffs_Object, hashLink); + if (!obj->deferedFree) { + yaffs2_ObjectToCheckpointObject(&cp, obj); + cp.structType = sizeof(cp); + + T(YAFFS_TRACE_CHECKPOINT, ( + TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %p" TENDSTR), + cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk, obj)); + + ok = (yaffs2_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)); + + if (ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE) + ok = yaffs2_WriteCheckpointTnodes(obj); + } + } + } + } + + /* Dump end of list */ + memset(&cp, 0xFF, sizeof(yaffs_CheckpointObject)); + cp.structType = sizeof(cp); + + if (ok) + ok = (yaffs2_CheckpointWrite(dev, &cp, sizeof(cp)) == sizeof(cp)); + + return ok ? 1 : 0; +} + +static int yaffs2_ReadCheckpointObjects(yaffs_Device *dev) +{ + yaffs_Object *obj; + yaffs_CheckpointObject cp; + int ok = 1; + int done = 0; + yaffs_Object *hardList = NULL; + + while (ok && !done) { + ok = (yaffs2_CheckpointRead(dev, &cp, sizeof(cp)) == sizeof(cp)); + if (cp.structType != sizeof(cp)) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("struct size %d instead of %d ok %d"TENDSTR), + cp.structType, (int)sizeof(cp), ok)); + ok = 0; + } + + T(YAFFS_TRACE_CHECKPOINT, (TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR), + cp.objectId, cp.parentId, cp.variantType, cp.hdrChunk)); + + if (ok && cp.objectId == ~0) + done = 1; + else if (ok) { + obj = yaffs_FindOrCreateObjectByNumber(dev, cp.objectId, cp.variantType); + if (obj) { + ok = yaffs2_CheckpointObjectToObject(obj, &cp); + if (!ok) + break; + if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) { + ok = yaffs2_ReadCheckpointTnodes(obj); + } else if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) { + obj->hardLinks.next = + (struct ylist_head *) hardList; + hardList = obj; + } + } else + ok = 0; + } + } + + if (ok) + yaffs_HardlinkFixup(dev, hardList); + + return ok ? 1 : 0; +} + +static int yaffs2_WriteCheckpointSum(yaffs_Device *dev) +{ + __u32 checkpointSum; + int ok; + + yaffs2_GetCheckpointSum(dev, &checkpointSum); + + ok = (yaffs2_CheckpointWrite(dev, &checkpointSum, sizeof(checkpointSum)) == sizeof(checkpointSum)); + + if (!ok) + return 0; + + return 1; +} + +static int yaffs2_ReadCheckpointSum(yaffs_Device *dev) +{ + __u32 checkpointSum0; + __u32 checkpointSum1; + int ok; + + yaffs2_GetCheckpointSum(dev, &checkpointSum0); + + ok = (yaffs2_CheckpointRead(dev, &checkpointSum1, sizeof(checkpointSum1)) == sizeof(checkpointSum1)); + + if (!ok) + return 0; + + if (checkpointSum0 != checkpointSum1) + return 0; + + return 1; +} + + +static int yaffs2_WriteCheckpointData(yaffs_Device *dev) +{ + int ok = 1; + + if (!yaffs2_CheckpointRequired(dev)) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint write" TENDSTR))); + ok = 0; + } + + if (ok) + ok = yaffs2_CheckpointOpen(dev, 1); + + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); + ok = yaffs2_WriteCheckpointValidityMarker(dev, 1); + } + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint device" TENDSTR))); + ok = yaffs2_WriteCheckpointDevice(dev); + } + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint objects" TENDSTR))); + ok = yaffs2_WriteCheckpointObjects(dev); + } + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("write checkpoint validity" TENDSTR))); + ok = yaffs2_WriteCheckpointValidityMarker(dev, 0); + } + + if (ok) + ok = yaffs2_WriteCheckpointSum(dev); + + if (!yaffs2_CheckpointClose(dev)) + ok = 0; + + if (ok) + dev->isCheckpointed = 1; + else + dev->isCheckpointed = 0; + + return dev->isCheckpointed; +} + +static int yaffs2_ReadCheckpointData(yaffs_Device *dev) +{ + int ok = 1; + + if(!dev->param.isYaffs2) + ok = 0; + + if (ok && dev->param.skipCheckpointRead) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("skipping checkpoint read" TENDSTR))); + ok = 0; + } + + if (ok) + ok = yaffs2_CheckpointOpen(dev, 0); /* open for read */ + + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); + ok = yaffs2_ReadCheckpointValidityMarker(dev, 1); + } + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint device" TENDSTR))); + ok = yaffs2_ReadCheckpointDevice(dev); + } + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint objects" TENDSTR))); + ok = yaffs2_ReadCheckpointObjects(dev); + } + if (ok) { + T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint validity" TENDSTR))); + ok = yaffs2_ReadCheckpointValidityMarker(dev, 0); + } + + if (ok) { + ok = yaffs2_ReadCheckpointSum(dev); + T(YAFFS_TRACE_CHECKPOINT, (TSTR("read checkpoint checksum %d" TENDSTR), ok)); + } + + if (!yaffs2_CheckpointClose(dev)) + ok = 0; + + if (ok) + dev->isCheckpointed = 1; + else + dev->isCheckpointed = 0; + + return ok ? 1 : 0; + +} + +void yaffs2_InvalidateCheckpoint(yaffs_Device *dev) +{ + if (dev->isCheckpointed || + dev->blocksInCheckpoint > 0) { + dev->isCheckpointed = 0; + yaffs2_CheckpointInvalidateStream(dev); + } + if (dev->param.markSuperBlockDirty) + dev->param.markSuperBlockDirty(dev); +} + + +int yaffs_CheckpointSave(yaffs_Device *dev) +{ + + T(YAFFS_TRACE_CHECKPOINT, (TSTR("save entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); + + yaffs_VerifyObjects(dev); + yaffs_VerifyBlocks(dev); + yaffs_VerifyFreeChunks(dev); + + if (!dev->isCheckpointed) { + yaffs2_InvalidateCheckpoint(dev); + yaffs2_WriteCheckpointData(dev); + } + + T(YAFFS_TRACE_ALWAYS, (TSTR("save exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); + + return dev->isCheckpointed; +} + +int yaffs2_CheckpointRestore(yaffs_Device *dev) +{ + int retval; + T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore entry: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); + + retval = yaffs2_ReadCheckpointData(dev); + + if (dev->isCheckpointed) { + yaffs_VerifyObjects(dev); + yaffs_VerifyBlocks(dev); + yaffs_VerifyFreeChunks(dev); + } + + T(YAFFS_TRACE_CHECKPOINT, (TSTR("restore exit: isCheckpointed %d"TENDSTR), dev->isCheckpointed)); + + return retval; +} + +int yaffs2_HandleHole(yaffs_Object *obj, loff_t newSize) +{ + /* if newsSize > oldFileSize. + * We're going to be writing a hole. + * If the hole is small then write zeros otherwise write a start of hole marker. + */ + + + loff_t oldFileSize; + int increase; + int smallHole ; + int result = YAFFS_OK; + yaffs_Device *dev = NULL; + + __u8 *localBuffer = NULL; + + int smallIncreaseOk = 0; + + if(!obj) + return YAFFS_FAIL; + + if(obj->variantType != YAFFS_OBJECT_TYPE_FILE) + return YAFFS_FAIL; + + dev = obj->myDev; + + /* Bail out if not yaffs2 mode */ + if(!dev->param.isYaffs2) + return YAFFS_OK; + + oldFileSize = obj->variant.fileVariant.fileSize; + + if (newSize <= oldFileSize) + return YAFFS_OK; + + increase = newSize - oldFileSize; + + if(increase < YAFFS_SMALL_HOLE_THRESHOLD * dev->nDataBytesPerChunk && + yaffs_CheckSpaceForAllocation(dev, YAFFS_SMALL_HOLE_THRESHOLD + 1)) + smallHole = 1; + else + smallHole = 0; + + if(smallHole) + localBuffer= yaffs_GetTempBuffer(dev, __LINE__); + + if(localBuffer){ + /* fill hole with zero bytes */ + int pos = oldFileSize; + int thisWrite; + int written; + memset(localBuffer,0,dev->nDataBytesPerChunk); + smallIncreaseOk = 1; + + while(increase > 0 && smallIncreaseOk){ + thisWrite = increase; + if(thisWrite > dev->nDataBytesPerChunk) + thisWrite = dev->nDataBytesPerChunk; + written = yaffs_DoWriteDataToFile(obj,localBuffer,pos,thisWrite,0); + if(written == thisWrite){ + pos += thisWrite; + increase -= thisWrite; + } else + smallIncreaseOk = 0; + } + + yaffs_ReleaseTempBuffer(dev,localBuffer,__LINE__); + + /* If we were out of space then reverse any chunks we've added */ + if(!smallIncreaseOk) + yaffs_ResizeDown(obj, oldFileSize); + } + + if (!smallIncreaseOk && + obj->parent && + obj->parent->objectId != YAFFS_OBJECTID_UNLINKED && + obj->parent->objectId != YAFFS_OBJECTID_DELETED){ + /* Write a hole start header with the old file size */ + yaffs_UpdateObjectHeader(obj, NULL, 0, 1, 0, NULL); + } + + return result; + +} + + +typedef struct { + int seq; + int block; +} yaffs_BlockIndex; + + +static int yaffs2_ybicmp(const void *a, const void *b) +{ + register int aseq = ((yaffs_BlockIndex *)a)->seq; + register int bseq = ((yaffs_BlockIndex *)b)->seq; + register int ablock = ((yaffs_BlockIndex *)a)->block; + register int bblock = ((yaffs_BlockIndex *)b)->block; + if (aseq == bseq) + return ablock - bblock; + else + return aseq - bseq; +} + +int yaffs2_ScanBackwards(yaffs_Device *dev) +{ + yaffs_ExtendedTags tags; + int blk; + int blockIterator; + int startIterator; + int endIterator; + int nBlocksToScan = 0; + + int chunk; + int result; + int c; + int deleted; + yaffs_BlockState state; + yaffs_Object *hardList = NULL; + yaffs_BlockInfo *bi; + __u32 sequenceNumber; + yaffs_ObjectHeader *oh; + yaffs_Object *in; + yaffs_Object *parent; + int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1; + int itsUnlinked; + __u8 *chunkData; + + int fileSize; + int isShrink; + int foundChunksInBlock; + int equivalentObjectId; + int alloc_failed = 0; + + + yaffs_BlockIndex *blockIndex = NULL; + int altBlockIndex = 0; + + T(YAFFS_TRACE_SCAN, + (TSTR + ("yaffs2_ScanBackwards starts intstartblk %d intendblk %d..." + TENDSTR), dev->internalStartBlock, dev->internalEndBlock)); + + + dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER; + + blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex)); + + if (!blockIndex) { + blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex)); + altBlockIndex = 1; + } + + if (!blockIndex) { + T(YAFFS_TRACE_SCAN, + (TSTR("yaffs2_ScanBackwards() could not allocate block index!" TENDSTR))); + return YAFFS_FAIL; + } + + dev->blocksInCheckpoint = 0; + + chunkData = yaffs_GetTempBuffer(dev, __LINE__); + + /* Scan all the blocks to determine their state */ + bi = dev->blockInfo; + for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) { + yaffs_ClearChunkBits(dev, blk); + bi->pagesInUse = 0; + bi->softDeletions = 0; + + yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber); + + bi->blockState = state; + bi->sequenceNumber = sequenceNumber; + + if (bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA) + bi->blockState = state = YAFFS_BLOCK_STATE_CHECKPOINT; + if (bi->sequenceNumber == YAFFS_SEQUENCE_BAD_BLOCK) + bi->blockState = state = YAFFS_BLOCK_STATE_DEAD; + + T(YAFFS_TRACE_SCAN_DEBUG, + (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk, + state, sequenceNumber)); + + + if (state == YAFFS_BLOCK_STATE_CHECKPOINT) { + dev->blocksInCheckpoint++; + + } else if (state == YAFFS_BLOCK_STATE_DEAD) { + T(YAFFS_TRACE_BAD_BLOCKS, + (TSTR("block %d is bad" TENDSTR), blk)); + } else if (state == YAFFS_BLOCK_STATE_EMPTY) { + T(YAFFS_TRACE_SCAN_DEBUG, + (TSTR("Block empty " TENDSTR))); + dev->nErasedBlocks++; + dev->nFreeChunks += dev->param.nChunksPerBlock; + } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { + + /* Determine the highest sequence number */ + if (sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER && + sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) { + + blockIndex[nBlocksToScan].seq = sequenceNumber; + blockIndex[nBlocksToScan].block = blk; + + nBlocksToScan++; + + if (sequenceNumber >= dev->sequenceNumber) + dev->sequenceNumber = sequenceNumber; + } else { + /* TODO: Nasty sequence number! */ + T(YAFFS_TRACE_SCAN, + (TSTR + ("Block scanning block %d has bad sequence number %d" + TENDSTR), blk, sequenceNumber)); + + } + } + bi++; + } + + T(YAFFS_TRACE_SCAN, + (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan)); + + + + YYIELD(); + + /* Sort the blocks by sequence number*/ + yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), yaffs2_ybicmp); + + YYIELD(); + + T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR))); + + /* Now scan the blocks looking at the data. */ + startIterator = 0; + endIterator = nBlocksToScan - 1; + T(YAFFS_TRACE_SCAN_DEBUG, + (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan)); + + /* For each block.... backwards */ + for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator; + blockIterator--) { + /* Cooperative multitasking! This loop can run for so + long that watchdog timers expire. */ + YYIELD(); + + /* get the block to scan in the correct order */ + blk = blockIndex[blockIterator].block; + + bi = yaffs_GetBlockInfo(dev, blk); + + + state = bi->blockState; + + deleted = 0; + + /* For each chunk in each block that needs scanning.... */ + foundChunksInBlock = 0; + for (c = dev->param.nChunksPerBlock - 1; + !alloc_failed && c >= 0 && + (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || + state == YAFFS_BLOCK_STATE_ALLOCATING); c--) { + /* Scan backwards... + * Read the tags and decide what to do + */ + + chunk = blk * dev->param.nChunksPerBlock + c; + + result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL, + &tags); + + /* Let's have a good look at this chunk... */ + + if (!tags.chunkUsed) { + /* An unassigned chunk in the block. + * If there are used chunks after this one, then + * it is a chunk that was skipped due to failing the erased + * check. Just skip it so that it can be deleted. + * But, more typically, We get here when this is an unallocated + * chunk and his means that either the block is empty or + * this is the one being allocated from + */ + + if (foundChunksInBlock) { + /* This is a chunk that was skipped due to failing the erased check */ + } else if (c == 0) { + /* We're looking at the first chunk in the block so the block is unused */ + state = YAFFS_BLOCK_STATE_EMPTY; + dev->nErasedBlocks++; + } else { + if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING || + state == YAFFS_BLOCK_STATE_ALLOCATING) { + if (dev->sequenceNumber == bi->sequenceNumber) { + /* this is the block being allocated from */ + + T(YAFFS_TRACE_SCAN, + (TSTR + (" Allocating from %d %d" + TENDSTR), blk, c)); + + state = YAFFS_BLOCK_STATE_ALLOCATING; + dev->allocationBlock = blk; + dev->allocationPage = c; + dev->allocationBlockFinder = blk; + } else { + /* This is a partially written block that is not + * the current allocation block. + */ + + T(YAFFS_TRACE_SCAN, + (TSTR("Partially written block %d detected" TENDSTR), + blk)); + } + } + } + + dev->nFreeChunks++; + + } else if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED) { + T(YAFFS_TRACE_SCAN, + (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR), + blk, c)); + + dev->nFreeChunks++; + + } else if (tags.objectId > YAFFS_MAX_OBJECT_ID || + tags.chunkId > YAFFS_MAX_CHUNK_ID || + (tags.chunkId > 0 && tags.byteCount > dev->nDataBytesPerChunk) || + tags.sequenceNumber != bi->sequenceNumber ) { + T(YAFFS_TRACE_SCAN, + (TSTR("Chunk (%d:%d) with bad tags:obj = %d, chunkId = %d, byteCount = %d, ignored"TENDSTR), + blk, c,tags.objectId, tags.chunkId, tags.byteCount)); + + dev->nFreeChunks++; + + } else if (tags.chunkId > 0) { + /* chunkId > 0 so it is a data chunk... */ + unsigned int endpos; + __u32 chunkBase = + (tags.chunkId - 1) * dev->nDataBytesPerChunk; + + foundChunksInBlock = 1; + + + yaffs_SetChunkBit(dev, blk, c); + bi->pagesInUse++; + + in = yaffs_FindOrCreateObjectByNumber(dev, + tags. + objectId, + YAFFS_OBJECT_TYPE_FILE); + if (!in) { + /* Out of memory */ + alloc_failed = 1; + } + + if (in && + in->variantType == YAFFS_OBJECT_TYPE_FILE + && chunkBase < in->variant.fileVariant.shrinkSize) { + /* This has not been invalidated by a resize */ + if (!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk, -1)) { + alloc_failed = 1; + } + + /* File size is calculated by looking at the data chunks if we have not + * seen an object header yet. Stop this practice once we find an object header. + */ + endpos = chunkBase + tags.byteCount; + + if (!in->valid && /* have not got an object header yet */ + in->variant.fileVariant.scannedFileSize < endpos) { + in->variant.fileVariant.scannedFileSize = endpos; + in->variant.fileVariant.fileSize = endpos; + } + + } else if (in) { + /* This chunk has been invalidated by a resize, or a past file deletion + * so delete the chunk*/ + yaffs_DeleteChunk(dev, chunk, 1, __LINE__); + + } + } else { + /* chunkId == 0, so it is an ObjectHeader. + * Thus, we read in the object header and make the object + */ + foundChunksInBlock = 1; + + yaffs_SetChunkBit(dev, blk, c); + bi->pagesInUse++; + + oh = NULL; + in = NULL; + + if (tags.extraHeaderInfoAvailable) { + in = yaffs_FindOrCreateObjectByNumber(dev, + tags.objectId, + tags.extraObjectType); + if (!in) + alloc_failed = 1; + } + + if (!in || + (!in->valid && dev->param.disableLazyLoad) || + tags.extraShadows || + (!in->valid && + (tags.objectId == YAFFS_OBJECTID_ROOT || + tags.objectId == YAFFS_OBJECTID_LOSTNFOUND))) { + + /* If we don't have valid info then we need to read the chunk + * TODO In future we can probably defer reading the chunk and + * living with invalid data until needed. + */ + + result = yaffs_ReadChunkWithTagsFromNAND(dev, + chunk, + chunkData, + NULL); + + oh = (yaffs_ObjectHeader *) chunkData; + + if (dev->param.inbandTags) { + /* Fix up the header if they got corrupted by inband tags */ + oh->shadowsObject = oh->inbandShadowsObject; + oh->isShrink = oh->inbandIsShrink; + } + + if (!in) { + in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type); + if (!in) + alloc_failed = 1; + } + + } + + if (!in) { + /* TODO Hoosterman we have a problem! */ + T(YAFFS_TRACE_ERROR, + (TSTR + ("yaffs tragedy: Could not make object for object %d at chunk %d during scan" + TENDSTR), tags.objectId, chunk)); + continue; + } + + if (in->valid) { + /* We have already filled this one. + * We have a duplicate that will be discarded, but + * we first have to suck out resize info if it is a file. + */ + + if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) && + ((oh && + oh->type == YAFFS_OBJECT_TYPE_FILE) || + (tags.extraHeaderInfoAvailable && + tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))) { + __u32 thisSize = + (oh) ? oh->fileSize : tags. + extraFileLength; + __u32 parentObjectId = + (oh) ? oh-> + parentObjectId : tags. + extraParentObjectId; + + + isShrink = + (oh) ? oh->isShrink : tags. + extraIsShrinkHeader; + + /* If it is deleted (unlinked at start also means deleted) + * we treat the file size as being zeroed at this point. + */ + if (parentObjectId == + YAFFS_OBJECTID_DELETED + || parentObjectId == + YAFFS_OBJECTID_UNLINKED) { + thisSize = 0; + isShrink = 1; + } + + if (isShrink && in->variant.fileVariant.shrinkSize > thisSize) + in->variant.fileVariant.shrinkSize = thisSize; + + if (isShrink) + bi->hasShrinkHeader = 1; + + } + /* Use existing - destroy this one. */ + yaffs_DeleteChunk(dev, chunk, 1, __LINE__); + + } + + if (!in->valid && in->variantType != + (oh ? oh->type : tags.extraObjectType)) + T(YAFFS_TRACE_ERROR, ( + TSTR("yaffs tragedy: Bad object type, " + TCONT("%d != %d, for object %d at chunk ") + TCONT("%d during scan") + TENDSTR), oh ? + oh->type : tags.extraObjectType, + in->variantType, tags.objectId, + chunk)); + + if (!in->valid && + (tags.objectId == YAFFS_OBJECTID_ROOT || + tags.objectId == + YAFFS_OBJECTID_LOSTNFOUND)) { + /* We only load some info, don't fiddle with directory structure */ + in->valid = 1; + + if (oh) { + + in->yst_mode = oh->yst_mode; +#ifdef CONFIG_YAFFS_WINCE + in->win_atime[0] = oh->win_atime[0]; + in->win_ctime[0] = oh->win_ctime[0]; + in->win_mtime[0] = oh->win_mtime[0]; + in->win_atime[1] = oh->win_atime[1]; + in->win_ctime[1] = oh->win_ctime[1]; + in->win_mtime[1] = oh->win_mtime[1]; +#else + in->yst_uid = oh->yst_uid; + in->yst_gid = oh->yst_gid; + in->yst_atime = oh->yst_atime; + in->yst_mtime = oh->yst_mtime; + in->yst_ctime = oh->yst_ctime; + in->yst_rdev = oh->yst_rdev; + + in->lazyLoaded = 0; + +#endif + } else + in->lazyLoaded = 1; + + in->hdrChunk = chunk; + + } else if (!in->valid) { + /* we need to load this info */ + + in->valid = 1; + in->hdrChunk = chunk; + + if (oh) { + in->variantType = oh->type; + + in->yst_mode = oh->yst_mode; +#ifdef CONFIG_YAFFS_WINCE + in->win_atime[0] = oh->win_atime[0]; + in->win_ctime[0] = oh->win_ctime[0]; + in->win_mtime[0] = oh->win_mtime[0]; + in->win_atime[1] = oh->win_atime[1]; + in->win_ctime[1] = oh->win_ctime[1]; + in->win_mtime[1] = oh->win_mtime[1]; +#else + in->yst_uid = oh->yst_uid; + in->yst_gid = oh->yst_gid; + in->yst_atime = oh->yst_atime; + in->yst_mtime = oh->yst_mtime; + in->yst_ctime = oh->yst_ctime; + in->yst_rdev = oh->yst_rdev; +#endif + + if (oh->shadowsObject > 0) + yaffs_HandleShadowedObject(dev, + oh-> + shadowsObject, + 1); + + + + yaffs_SetObjectNameFromOH(in, oh); + parent = + yaffs_FindOrCreateObjectByNumber + (dev, oh->parentObjectId, + YAFFS_OBJECT_TYPE_DIRECTORY); + + fileSize = oh->fileSize; + isShrink = oh->isShrink; + equivalentObjectId = oh->equivalentObjectId; + + } else { + in->variantType = tags.extraObjectType; + parent = + yaffs_FindOrCreateObjectByNumber + (dev, tags.extraParentObjectId, + YAFFS_OBJECT_TYPE_DIRECTORY); + fileSize = tags.extraFileLength; + isShrink = tags.extraIsShrinkHeader; + equivalentObjectId = tags.extraEquivalentObjectId; + in->lazyLoaded = 1; + + } + in->dirty = 0; + + if (!parent) + alloc_failed = 1; + + /* directory stuff... + * hook up to parent + */ + + if (parent && parent->variantType == + YAFFS_OBJECT_TYPE_UNKNOWN) { + /* Set up as a directory */ + parent->variantType = + YAFFS_OBJECT_TYPE_DIRECTORY; + YINIT_LIST_HEAD(&parent->variant. + directoryVariant. + children); + } else if (!parent || parent->variantType != + YAFFS_OBJECT_TYPE_DIRECTORY) { + /* Hoosterman, another problem.... + * We're trying to use a non-directory as a directory + */ + + T(YAFFS_TRACE_ERROR, + (TSTR + ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found." + TENDSTR))); + parent = dev->lostNFoundDir; + } + + yaffs_AddObjectToDirectory(parent, in); + + itsUnlinked = (parent == dev->deletedDir) || + (parent == dev->unlinkedDir); + + if (isShrink) { + /* Mark the block as having a shrinkHeader */ + bi->hasShrinkHeader = 1; + } + + /* Note re hardlinks. + * Since we might scan a hardlink before its equivalent object is scanned + * we put them all in a list. + * After scanning is complete, we should have all the objects, so we run + * through this list and fix up all the chains. + */ + + switch (in->variantType) { + case YAFFS_OBJECT_TYPE_UNKNOWN: + /* Todo got a problem */ + break; + case YAFFS_OBJECT_TYPE_FILE: + + if (in->variant.fileVariant. + scannedFileSize < fileSize) { + /* This covers the case where the file size is greater + * than where the data is + * This will happen if the file is resized to be larger + * than its current data extents. + */ + in->variant.fileVariant.fileSize = fileSize; + in->variant.fileVariant.scannedFileSize = fileSize; + } + + if (in->variant.fileVariant.shrinkSize > fileSize) + in->variant.fileVariant.shrinkSize = fileSize; + + + break; + case YAFFS_OBJECT_TYPE_HARDLINK: + if (!itsUnlinked) { + in->variant.hardLinkVariant.equivalentObjectId = + equivalentObjectId; + in->hardLinks.next = + (struct ylist_head *) hardList; + hardList = in; + } + break; + case YAFFS_OBJECT_TYPE_DIRECTORY: + /* Do nothing */ + break; + case YAFFS_OBJECT_TYPE_SPECIAL: + /* Do nothing */ + break; + case YAFFS_OBJECT_TYPE_SYMLINK: + if (oh) { + in->variant.symLinkVariant.alias = + yaffs_CloneString(oh->alias); + if (!in->variant.symLinkVariant.alias) + alloc_failed = 1; + } + break; + } + + } + + } + + } /* End of scanning for each chunk */ + + if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) { + /* If we got this far while scanning, then the block is fully allocated. */ + state = YAFFS_BLOCK_STATE_FULL; + } + + + bi->blockState = state; + + /* Now let's see if it was dirty */ + if (bi->pagesInUse == 0 && + !bi->hasShrinkHeader && + bi->blockState == YAFFS_BLOCK_STATE_FULL) { + yaffs_BlockBecameDirty(dev, blk); + } + + } + + yaffs_SkipRestOfBlock(dev); + + if (altBlockIndex) + YFREE_ALT(blockIndex); + else + YFREE(blockIndex); + + /* Ok, we've done all the scanning. + * Fix up the hard link chains. + * We should now have scanned all the objects, now it's time to add these + * hardlinks. + */ + yaffs_HardlinkFixup(dev, hardList); + + + yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__); + + if (alloc_failed) + return YAFFS_FAIL; + + T(YAFFS_TRACE_SCAN, (TSTR("yaffs2_ScanBackwards ends" TENDSTR))); + + return YAFFS_OK; +} diff --git a/fs/yaffs2/yaffs_yaffs2.h b/fs/yaffs2/yaffs_yaffs2.h new file mode 100644 index 00000000..08ba3630 --- /dev/null +++ b/fs/yaffs2/yaffs_yaffs2.h @@ -0,0 +1,38 @@ +/* + * YAFFS: Yet another Flash File System . A NAND-flash specific file system. + * + * Copyright (C) 2002-2010 Aleph One Ltd. + * for Toby Churchill Ltd and Brightstar Engineering + * + * Created by Charles Manning + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 2.1 as + * published by the Free Software Foundation. + * + * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL. + */ + +#ifndef __YAFFS_YAFFS2_H__ +#define __YAFFS_YAFFS2_H__ + +#include "yaffs_guts.h" + +void yaffs2_CalcOldestDirtySequence(yaffs_Device *dev); +void yaffs2_FindOldestDirtySequence(yaffs_Device *dev); +void yaffs2_ClearOldestDirtySequence(yaffs_Device *dev, yaffs_BlockInfo *bi); +void yaffs2_UpdateOldestDirtySequence(yaffs_Device *dev, unsigned blockNo, yaffs_BlockInfo *bi); +int yaffs2_BlockNotDisqualifiedFromGC(yaffs_Device *dev, yaffs_BlockInfo *bi); +__u32 yaffs2_FindRefreshBlock(yaffs_Device *dev); +int yaffs2_CheckpointRequired(yaffs_Device *dev); +int yaffs2_CalcCheckpointBlocksRequired(yaffs_Device *dev); + + +void yaffs2_InvalidateCheckpoint(yaffs_Device *dev); +int yaffs2_CheckpointSave(yaffs_Device *dev); +int yaffs2_CheckpointRestore(yaffs_Device *dev); + +int yaffs2_HandleHole(yaffs_Object *obj, loff_t newSize); +int yaffs2_ScanBackwards(yaffs_Device *dev); + +#endif