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linux_syscall_support.h
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/* Copyright 2005-2011 Google LLC
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* ---
* Author: Markus Gutschke
*/
/* This file includes Linux-specific support functions common to the
* coredumper and the thread lister; primarily, this is a collection
* of direct system calls, and a couple of symbols missing from
* standard header files.
* There are a few options that the including file can set to control
* the behavior of this file:
*
* SYS_CPLUSPLUS:
* The entire header file will normally be wrapped in 'extern "C" { }",
* making it suitable for compilation as both C and C++ source. If you
* do not want to do this, you can set the SYS_CPLUSPLUS macro to inhibit
* the wrapping. N.B. doing so will suppress inclusion of all prerequisite
* system header files, too. It is the caller's responsibility to provide
* the necessary definitions.
*
* SYS_ERRNO:
* All system calls will update "errno" unless overridden by setting the
* SYS_ERRNO macro prior to including this file. SYS_ERRNO should be
* an l-value.
*
* SYS_INLINE:
* New symbols will be defined "static inline", unless overridden by
* the SYS_INLINE macro.
*
* SYS_LINUX_SYSCALL_SUPPORT_H
* This macro is used to avoid multiple inclusions of this header file.
* If you need to include this file more than once, make sure to
* unset SYS_LINUX_SYSCALL_SUPPORT_H before each inclusion.
*
* SYS_PREFIX:
* New system calls will have a prefix of "sys_" unless overridden by
* the SYS_PREFIX macro. Valid values for this macro are [0..9] which
* results in prefixes "sys[0..9]_". It is also possible to set this
* macro to -1, which avoids all prefixes.
*
* SYS_SYSCALL_ENTRYPOINT:
* Some applications (such as sandboxes that filter system calls), need
* to be able to run custom-code each time a system call is made. If this
* macro is defined, it expands to the name of a "common" symbol. If
* this symbol is assigned a non-NULL pointer value, it is used as the
* address of the system call entrypoint.
* A pointer to this symbol can be obtained by calling
* get_syscall_entrypoint()
*
* This file defines a few internal symbols that all start with "LSS_".
* Do not access these symbols from outside this file. They are not part
* of the supported API.
*/
#ifndef SYS_LINUX_SYSCALL_SUPPORT_H
#define SYS_LINUX_SYSCALL_SUPPORT_H
/* We currently only support x86-32, x86-64, ARM, MIPS, PPC, s390 and s390x
* on Linux.
* Porting to other related platforms should not be difficult.
*/
#if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) || \
defined(__mips__) || defined(__PPC__) || defined(__ARM_EABI__) || \
defined(__aarch64__) || defined(__s390__) || defined(__e2k__) || \
(defined(__riscv) && __riscv_xlen == 64) || defined(__loongarch_lp64)) \
&& (defined(__linux) || defined(__ANDROID__))
#ifndef SYS_CPLUSPLUS
#ifdef __cplusplus
/* Some system header files in older versions of gcc neglect to properly
* handle being included from C++. As it appears to be harmless to have
* multiple nested 'extern "C"' blocks, just add another one here.
*/
extern "C" {
#endif
#include <errno.h>
#include <fcntl.h>
#include <sched.h>
#include <signal.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include <sys/ptrace.h>
#include <sys/resource.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/syscall.h>
#include <unistd.h>
#include <linux/unistd.h>
#include <endian.h>
#ifdef __mips__
/* Include definitions of the ABI currently in use. */
#ifdef __ANDROID__
/* Android doesn't have sgidefs.h, but does have asm/sgidefs.h,
* which has the definitions we need.
*/
#include <asm/sgidefs.h>
#else
#include <sgidefs.h>
#endif
#endif
#endif
/* Some libcs, for example Android NDK and musl, #define these
* macros as aliases to their non-64 counterparts. To avoid naming
* conflict, remove them.
*
* These are restored by the corresponding #pragma pop_macro near
* the end of this file.
*/
#pragma push_macro("stat64")
#pragma push_macro("fstat64")
#pragma push_macro("lstat64")
#pragma push_macro("pread64")
#pragma push_macro("pwrite64")
#pragma push_macro("getdents64")
#undef stat64
#undef fstat64
#undef lstat64
#undef pread64
#undef pwrite64
#undef getdents64
#if defined(__ANDROID__) && defined(__x86_64__)
// A number of x86_64 syscalls are blocked by seccomp on recent Android;
// undefine them so that modern alternatives will be used instead where
// possible.
// The alternative syscalls have been sanity checked against linux-3.4+;
// older versions might not work.
# undef __NR_getdents
# undef __NR_dup2
# undef __NR_fork
# undef __NR_getpgrp
# undef __NR_open
# undef __NR_poll
# undef __NR_readlink
# undef __NR_stat
# undef __NR_unlink
# undef __NR_pipe
#endif
#if defined(__ANDROID__)
// waitpid is blocked by seccomp on all architectures on recent Android.
# undef __NR_waitpid
#endif
/* As glibc often provides subtly incompatible data structures (and implicit
* wrapper functions that convert them), we provide our own kernel data
* structures for use by the system calls.
* These structures have been developed by using Linux 2.6.23 headers for
* reference. Note though, we do not care about exact API compatibility
* with the kernel, and in fact the kernel often does not have a single
* API that works across architectures. Instead, we try to mimic the glibc
* API where reasonable, and only guarantee ABI compatibility with the
* kernel headers.
* Most notably, here are a few changes that were made to the structures
* defined by kernel headers:
*
* - we only define structures, but not symbolic names for kernel data
* types. For the latter, we directly use the native C datatype
* (i.e. "unsigned" instead of "mode_t").
* - in a few cases, it is possible to define identical structures for
* both 32bit (e.g. i386) and 64bit (e.g. x86-64) platforms by
* standardizing on the 64bit version of the data types. In particular,
* this means that we use "unsigned" where the 32bit headers say
* "unsigned long".
* - overall, we try to minimize the number of cases where we need to
* conditionally define different structures.
* - the "struct kernel_sigaction" class of structures have been
* modified to more closely mimic glibc's API by introducing an
* anonymous union for the function pointer.
* - a small number of field names had to have an underscore appended to
* them, because glibc defines a global macro by the same name.
*/
/* include/linux/dirent.h */
struct kernel_dirent64 {
unsigned long long d_ino;
long long d_off;
unsigned short d_reclen;
unsigned char d_type;
char d_name[256];
};
/* include/linux/dirent.h */
#if !defined(__NR_getdents)
// when getdents is not available, getdents64 is used for both.
#define kernel_dirent kernel_dirent64
#else
struct kernel_dirent {
long d_ino;
long d_off;
unsigned short d_reclen;
char d_name[256];
};
#endif
/* include/linux/uio.h */
struct kernel_iovec {
void *iov_base;
unsigned long iov_len;
};
/* include/linux/socket.h */
struct kernel_msghdr {
void *msg_name;
int msg_namelen;
struct kernel_iovec*msg_iov;
unsigned long msg_iovlen;
void *msg_control;
unsigned long msg_controllen;
unsigned msg_flags;
};
/* include/asm-generic/poll.h */
struct kernel_pollfd {
int fd;
short events;
short revents;
};
/* include/linux/resource.h */
struct kernel_rlimit {
unsigned long rlim_cur;
unsigned long rlim_max;
};
/* include/linux/time.h */
struct kernel_timespec {
long tv_sec;
long tv_nsec;
};
/* include/linux/time.h */
struct kernel_timeval {
long tv_sec;
long tv_usec;
};
/* include/linux/time.h */
struct kernel_itimerval {
struct kernel_timeval it_interval;
struct kernel_timeval it_value;
};
/* include/linux/resource.h */
struct kernel_rusage {
struct kernel_timeval ru_utime;
struct kernel_timeval ru_stime;
long ru_maxrss;
long ru_ixrss;
long ru_idrss;
long ru_isrss;
long ru_minflt;
long ru_majflt;
long ru_nswap;
long ru_inblock;
long ru_oublock;
long ru_msgsnd;
long ru_msgrcv;
long ru_nsignals;
long ru_nvcsw;
long ru_nivcsw;
};
#if defined(__i386__) || defined(__ARM_EABI__) || defined(__ARM_ARCH_3__) \
|| defined(__PPC__) || (defined(__s390__) && !defined(__s390x__)) \
|| defined(__e2k__)
/* include/asm-{arm,i386,mips,ppc}/signal.h */
struct kernel_old_sigaction {
union {
void (*sa_handler_)(int);
void (*sa_sigaction_)(int, siginfo_t *, void *);
};
unsigned long sa_mask;
unsigned long sa_flags;
void (*sa_restorer)(void);
} __attribute__((packed,aligned(4)));
#elif (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32)
#define kernel_old_sigaction kernel_sigaction
#elif defined(__aarch64__) || defined(__riscv) || defined(__loongarch_lp64)
// No kernel_old_sigaction defined for arm64 riscv and loongarch64.
#endif
/* Some kernel functions (e.g. sigaction() in 2.6.23) require that the
* exactly match the size of the signal set, even though the API was
* intended to be extensible. We define our own KERNEL_NSIG to deal with
* this.
* Please note that glibc provides signals [1.._NSIG-1], whereas the
* kernel (and this header) provides the range [1..KERNEL_NSIG]. The
* actual number of signals is obviously the same, but the constants
* differ by one.
*/
#ifdef __mips__
#define KERNEL_NSIG 128
#else
#define KERNEL_NSIG 64
#endif
/* include/asm-{arm,aarch64,i386,mips,x86_64}/signal.h */
struct kernel_sigset_t {
unsigned long sig[(KERNEL_NSIG + 8*sizeof(unsigned long) - 1)/
(8*sizeof(unsigned long))];
};
/* include/asm-{arm,i386,mips,x86_64,ppc}/signal.h */
struct kernel_sigaction {
#ifdef __mips__
unsigned long sa_flags;
union {
void (*sa_handler_)(int);
void (*sa_sigaction_)(int, siginfo_t *, void *);
};
struct kernel_sigset_t sa_mask;
#else
union {
void (*sa_handler_)(int);
void (*sa_sigaction_)(int, siginfo_t *, void *);
};
unsigned long sa_flags;
#if !defined(__riscv) && !defined(__loongarch_lp64)
void (*sa_restorer)(void);
#endif
struct kernel_sigset_t sa_mask;
#endif
};
/* include/linux/socket.h */
struct kernel_sockaddr {
unsigned short sa_family;
char sa_data[14];
};
/* include/asm-{arm,aarch64,i386,mips,ppc,s390}/stat.h */
#ifdef __mips__
#if _MIPS_SIM == _MIPS_SIM_ABI64
typedef unsigned long long kernel_blkcnt_t;
typedef unsigned kernel_blksize_t;
typedef unsigned kernel_dev_t;
typedef unsigned kernel_gid_t;
typedef unsigned long long kernel_ino_t;
typedef unsigned kernel_mode_t;
typedef unsigned kernel_nlink_t;
typedef long long kernel_off_t;
typedef unsigned kernel_time_t;
typedef unsigned kernel_uid_t;
struct kernel_stat {
#else
struct kernel_stat64 {
#endif
unsigned st_dev;
unsigned __pad0[3];
unsigned long long st_ino;
unsigned st_mode;
unsigned st_nlink;
unsigned st_uid;
unsigned st_gid;
unsigned st_rdev;
unsigned __pad1[3];
long long st_size;
unsigned st_atime_;
unsigned st_atime_nsec_;
unsigned st_mtime_;
unsigned st_mtime_nsec_;
unsigned st_ctime_;
unsigned st_ctime_nsec_;
unsigned st_blksize;
unsigned __pad2;
unsigned long long st_blocks;
};
#elif defined __PPC__
struct kernel_stat64 {
unsigned long long st_dev;
unsigned long long st_ino;
unsigned st_mode;
unsigned st_nlink;
unsigned st_uid;
unsigned st_gid;
unsigned long long st_rdev;
unsigned short int __pad2;
long long st_size;
long st_blksize;
long long st_blocks;
long st_atime_;
unsigned long st_atime_nsec_;
long st_mtime_;
unsigned long st_mtime_nsec_;
long st_ctime_;
unsigned long st_ctime_nsec_;
unsigned long __unused4;
unsigned long __unused5;
};
#elif defined(__e2k__)
struct kernel_stat64 {
unsigned long long st_dev;
unsigned long long st_ino;
unsigned int st_mode;
unsigned int st_nlink;
unsigned int st_uid;
unsigned int st_gid;
unsigned long long st_rdev;
long long st_size;
int st_blksize;
int __pad2;
unsigned long long st_blocks;
int st_atime_;
unsigned int st_atime_nsec_;
int st_mtime_;
unsigned int st_mtime_nsec_;
int st_ctime_;
unsigned int st_ctime_nsec_;
unsigned int __unused4;
unsigned int __unused5;
};
#else
struct kernel_stat64 {
unsigned long long st_dev;
unsigned char __pad0[4];
unsigned __st_ino;
unsigned st_mode;
unsigned st_nlink;
unsigned st_uid;
unsigned st_gid;
unsigned long long st_rdev;
unsigned char __pad3[4];
long long st_size;
unsigned st_blksize;
unsigned long long st_blocks;
unsigned st_atime_;
unsigned st_atime_nsec_;
unsigned st_mtime_;
unsigned st_mtime_nsec_;
unsigned st_ctime_;
unsigned st_ctime_nsec_;
unsigned long long st_ino;
};
#endif
/* include/asm-{arm,aarch64,i386,mips,x86_64,ppc,s390}/stat.h */
#if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
typedef unsigned kernel_blkcnt_t;
typedef unsigned kernel_blksize_t;
typedef unsigned short kernel_dev_t;
typedef unsigned short kernel_gid_t;
typedef unsigned kernel_ino_t;
typedef unsigned short kernel_mode_t;
typedef unsigned short kernel_nlink_t;
typedef unsigned kernel_off_t;
typedef unsigned kernel_time_t;
typedef unsigned short kernel_uid_t;
struct kernel_stat {
/* The kernel headers suggest that st_dev and st_rdev should be 32bit
* quantities encoding 12bit major and 20bit minor numbers in an interleaved
* format. In reality, we do not see useful data in the top bits. So,
* we'll leave the padding in here, until we find a better solution.
*/
kernel_dev_t st_dev;
short pad1;
kernel_ino_t st_ino;
kernel_mode_t st_mode;
kernel_nlink_t st_nlink;
kernel_uid_t st_uid;
kernel_gid_t st_gid;
kernel_dev_t st_rdev;
short pad2;
kernel_off_t st_size;
kernel_blksize_t st_blksize;
kernel_blkcnt_t st_blocks;
kernel_time_t st_atime_;
unsigned st_atime_nsec_;
kernel_time_t st_mtime_;
unsigned st_mtime_nsec_;
kernel_time_t st_ctime_;
unsigned st_ctime_nsec_;
unsigned __unused4;
unsigned __unused5;
};
#elif defined(__x86_64__)
typedef int64_t kernel_blkcnt_t;
typedef int64_t kernel_blksize_t;
typedef uint64_t kernel_dev_t;
typedef unsigned kernel_gid_t;
typedef uint64_t kernel_ino_t;
typedef unsigned kernel_mode_t;
typedef uint64_t kernel_nlink_t;
typedef int64_t kernel_off_t;
typedef uint64_t kernel_time_t;
typedef unsigned kernel_uid_t;
struct kernel_stat {
kernel_dev_t st_dev;
kernel_ino_t st_ino;
kernel_nlink_t st_nlink;
kernel_mode_t st_mode;
kernel_uid_t st_uid;
kernel_gid_t st_gid;
unsigned __pad0;
kernel_dev_t st_rdev;
kernel_off_t st_size;
kernel_blksize_t st_blksize;
kernel_blkcnt_t st_blocks;
kernel_time_t st_atime_;
uint64_t st_atime_nsec_;
kernel_time_t st_mtime_;
uint64_t st_mtime_nsec_;
kernel_time_t st_ctime_;
uint64_t st_ctime_nsec_;
int64_t __unused4[3];
};
#elif defined(__PPC__)
typedef unsigned long kernel_blkcnt_t;
typedef unsigned long kernel_blksize_t;
typedef unsigned kernel_dev_t;
typedef unsigned kernel_gid_t;
typedef unsigned long kernel_ino_t;
typedef unsigned long kernel_mode_t;
typedef unsigned short kernel_nlink_t;
typedef long kernel_off_t;
typedef unsigned long kernel_time_t;
typedef unsigned kernel_uid_t;
struct kernel_stat {
kernel_dev_t st_dev;
kernel_ino_t st_ino;
kernel_mode_t st_mode;
kernel_nlink_t st_nlink;
kernel_gid_t st_uid;
kernel_uid_t st_gid;
kernel_dev_t st_rdev;
kernel_off_t st_size;
kernel_blksize_t st_blksize;
kernel_blkcnt_t st_blocks;
kernel_time_t st_atime_;
unsigned long st_atime_nsec_;
kernel_time_t st_mtime_;
unsigned long st_mtime_nsec_;
kernel_time_t st_ctime_;
unsigned long st_ctime_nsec_;
unsigned long __unused4;
unsigned long __unused5;
};
#elif (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI64)
typedef int kernel_blkcnt_t;
typedef int kernel_blksize_t;
typedef unsigned kernel_dev_t;
typedef unsigned kernel_gid_t;
typedef unsigned kernel_ino_t;
typedef unsigned kernel_mode_t;
typedef unsigned kernel_nlink_t;
typedef long kernel_off_t;
typedef long kernel_time_t;
typedef unsigned kernel_uid_t;
struct kernel_stat {
kernel_dev_t st_dev;
int st_pad1[3];
kernel_ino_t st_ino;
kernel_mode_t st_mode;
kernel_nlink_t st_nlink;
kernel_uid_t st_uid;
kernel_gid_t st_gid;
kernel_dev_t st_rdev;
int st_pad2[2];
kernel_off_t st_size;
int st_pad3;
kernel_time_t st_atime_;
long st_atime_nsec_;
kernel_time_t st_mtime_;
long st_mtime_nsec_;
kernel_time_t st_ctime_;
long st_ctime_nsec_;
kernel_blksize_t st_blksize;
kernel_blkcnt_t st_blocks;
int st_pad4[14];
};
#elif defined(__aarch64__) || defined(__riscv) || defined(__loongarch_lp64)
typedef long kernel_blkcnt_t;
typedef int kernel_blksize_t;
typedef unsigned long kernel_dev_t;
typedef unsigned int kernel_gid_t;
typedef unsigned long kernel_ino_t;
typedef unsigned int kernel_mode_t;
typedef unsigned int kernel_nlink_t;
typedef long kernel_off_t;
typedef long kernel_time_t;
typedef unsigned int kernel_uid_t;
struct kernel_stat {
kernel_dev_t st_dev;
kernel_ino_t st_ino;
kernel_mode_t st_mode;
kernel_nlink_t st_nlink;
kernel_uid_t st_uid;
kernel_gid_t st_gid;
kernel_dev_t st_rdev;
unsigned long __pad1;
kernel_off_t st_size;
kernel_blksize_t st_blksize;
int __pad2;
kernel_blkcnt_t st_blocks;
kernel_time_t st_atime_;
unsigned long st_atime_nsec_;
kernel_time_t st_mtime_;
unsigned long st_mtime_nsec_;
kernel_time_t st_ctime_;
unsigned long st_ctime_nsec_;
unsigned int __unused4;
unsigned int __unused5;
};
#elif defined(__s390x__)
typedef long kernel_blkcnt_t;
typedef unsigned long kernel_blksize_t;
typedef unsigned long kernel_dev_t;
typedef unsigned int kernel_gid_t;
typedef unsigned long kernel_ino_t;
typedef unsigned int kernel_mode_t;
typedef unsigned long kernel_nlink_t;
typedef unsigned long kernel_off_t;
typedef unsigned long kernel_time_t;
typedef unsigned int kernel_uid_t;
struct kernel_stat {
kernel_dev_t st_dev;
kernel_ino_t st_ino;
kernel_nlink_t st_nlink;
kernel_mode_t st_mode;
kernel_uid_t st_uid;
kernel_gid_t st_gid;
unsigned int __pad1;
kernel_dev_t st_rdev;
kernel_off_t st_size;
kernel_time_t st_atime_;
unsigned long st_atime_nsec_;
kernel_time_t st_mtime_;
unsigned long st_mtime_nsec_;
kernel_time_t st_ctime_;
unsigned long st_ctime_nsec_;
kernel_blksize_t st_blksize;
kernel_blkcnt_t st_blocks;
unsigned long __unused[3];
};
#elif defined(__s390__)
typedef unsigned long kernel_blkcnt_t;
typedef unsigned long kernel_blksize_t;
typedef unsigned short kernel_dev_t;
typedef unsigned short kernel_gid_t;
typedef unsigned long kernel_ino_t;
typedef unsigned short kernel_mode_t;
typedef unsigned short kernel_nlink_t;
typedef unsigned long kernel_off_t;
typedef unsigned long kernel_time_t;
typedef unsigned short kernel_uid_t;
struct kernel_stat {
kernel_dev_t st_dev;
unsigned short __pad1;
kernel_ino_t st_ino;
kernel_mode_t st_mode;
kernel_nlink_t st_nlink;
kernel_uid_t st_uid;
kernel_gid_t st_gid;
kernel_dev_t st_rdev;
unsigned short __pad2;
kernel_off_t st_size;
kernel_blksize_t st_blksize;
kernel_blkcnt_t st_blocks;
kernel_time_t st_atime_;
unsigned long st_atime_nsec_;
kernel_time_t st_mtime_;
unsigned long st_mtime_nsec_;
kernel_time_t st_ctime_;
unsigned long st_ctime_nsec_;
unsigned long __unused4;
unsigned long __unused5;
};
#elif defined(__e2k__)
typedef unsigned long kernel_blkcnt_t;
typedef unsigned long kernel_blksize_t;
typedef unsigned long kernel_dev_t;
typedef unsigned int kernel_gid_t;
typedef unsigned long kernel_ino_t;
typedef unsigned int kernel_mode_t;
typedef unsigned long kernel_nlink_t;
typedef unsigned long kernel_off_t;
typedef unsigned long kernel_time_t;
typedef unsigned int kernel_uid_t;
struct kernel_stat {
kernel_dev_t st_dev;
kernel_ino_t st_ino;
kernel_mode_t st_mode;
kernel_nlink_t st_nlink;
kernel_uid_t st_uid;
kernel_gid_t st_gid;
kernel_dev_t st_rdev;
kernel_off_t st_size;
kernel_blksize_t st_blksize;
kernel_blkcnt_t st_blocks;
kernel_time_t st_atime_;
unsigned long st_atime_nsec_;
kernel_time_t st_mtime_;
unsigned long st_mtime_nsec_;
kernel_time_t st_ctime_;
unsigned long st_ctime_nsec_;
};
#endif
/* include/asm-{arm,aarch64,i386,mips,x86_64,ppc,s390}/statfs.h */
#ifdef __mips__
#if _MIPS_SIM != _MIPS_SIM_ABI64
struct kernel_statfs64 {
unsigned long f_type;
unsigned long f_bsize;
unsigned long f_frsize;
unsigned long __pad;
unsigned long long f_blocks;
unsigned long long f_bfree;
unsigned long long f_files;
unsigned long long f_ffree;
unsigned long long f_bavail;
struct { int val[2]; } f_fsid;
unsigned long f_namelen;
unsigned long f_spare[6];
};
#endif
#elif defined(__s390__)
/* See also arch/s390/include/asm/compat.h */
struct kernel_statfs64 {
unsigned int f_type;
unsigned int f_bsize;
unsigned long long f_blocks;
unsigned long long f_bfree;
unsigned long long f_bavail;
unsigned long long f_files;
unsigned long long f_ffree;
struct { int val[2]; } f_fsid;
unsigned int f_namelen;
unsigned int f_frsize;
unsigned int f_flags;
unsigned int f_spare[4];
};
#elif !defined(__x86_64__)
struct kernel_statfs64 {
unsigned long f_type;
unsigned long f_bsize;
unsigned long long f_blocks;
unsigned long long f_bfree;
unsigned long long f_bavail;
unsigned long long f_files;
unsigned long long f_ffree;
struct { int val[2]; } f_fsid;
unsigned long f_namelen;
unsigned long f_frsize;
unsigned long f_spare[5];
};
#endif
/* include/asm-{arm,i386,mips,x86_64,ppc,generic,s390}/statfs.h */
#ifdef __mips__
struct kernel_statfs {
long f_type;
long f_bsize;
long f_frsize;
long f_blocks;
long f_bfree;
long f_files;
long f_ffree;
long f_bavail;
struct { int val[2]; } f_fsid;
long f_namelen;
long f_spare[6];
};
#elif defined(__x86_64__)
struct kernel_statfs {
/* x86_64 actually defines all these fields as signed, whereas all other */
/* platforms define them as unsigned. Leaving them at unsigned should not */
/* cause any problems. Make sure these are 64-bit even on x32. */
uint64_t f_type;
uint64_t f_bsize;
uint64_t f_blocks;
uint64_t f_bfree;
uint64_t f_bavail;
uint64_t f_files;
uint64_t f_ffree;
struct { int val[2]; } f_fsid;
uint64_t f_namelen;
uint64_t f_frsize;
uint64_t f_spare[5];
};
#elif defined(__s390__)
struct kernel_statfs {
unsigned int f_type;
unsigned int f_bsize;
unsigned long f_blocks;
unsigned long f_bfree;
unsigned long f_bavail;
unsigned long f_files;
unsigned long f_ffree;
struct { int val[2]; } f_fsid;
unsigned int f_namelen;
unsigned int f_frsize;
unsigned int f_flags;
unsigned int f_spare[4];
};
#else
struct kernel_statfs {
unsigned long f_type;
unsigned long f_bsize;
unsigned long f_blocks;
unsigned long f_bfree;
unsigned long f_bavail;
unsigned long f_files;
unsigned long f_ffree;
struct { int val[2]; } f_fsid;
unsigned long f_namelen;
unsigned long f_frsize;
unsigned long f_spare[5];
};
#endif
struct kernel_statx_timestamp {
int64_t tv_sec;
uint32_t tv_nsec;
int32_t __reserved;
};
struct kernel_statx {
uint32_t stx_mask;
uint32_t stx_blksize;
uint64_t stx_attributes;
uint32_t stx_nlink;
uint32_t stx_uid;
uint32_t stx_gid;
uint16_t stx_mode;
uint16_t __spare0[1];
uint64_t stx_ino;
uint64_t stx_size;
uint64_t stx_blocks;
uint64_t stx_attributes_mask;
struct kernel_statx_timestamp stx_atime;
struct kernel_statx_timestamp stx_btime;
struct kernel_statx_timestamp stx_ctime;
struct kernel_statx_timestamp stx_mtime;
uint32_t stx_rdev_major;
uint32_t stx_rdev_minor;
uint32_t stx_dev_major;
uint32_t stx_dev_minor;
uint64_t stx_mnt_id;
uint64_t __spare2;
uint64_t __spare3[12];
};
/* Definitions missing from the standard header files */
#ifndef O_DIRECTORY
#if defined(__ARM_ARCH_3__) || defined(__ARM_EABI__) || defined(__aarch64__)
#define O_DIRECTORY 0040000
#else
#define O_DIRECTORY 0200000
#endif
#endif
#ifndef NT_PRXFPREG
#define NT_PRXFPREG 0x46e62b7f
#endif
#ifndef PTRACE_GETFPXREGS
#define PTRACE_GETFPXREGS ((enum __ptrace_request)18)
#endif
#ifndef PR_GET_DUMPABLE
#define PR_GET_DUMPABLE 3
#endif
#ifndef PR_SET_DUMPABLE
#define PR_SET_DUMPABLE 4
#endif
#ifndef PR_GET_SECCOMP
#define PR_GET_SECCOMP 21
#endif
#ifndef PR_SET_SECCOMP
#define PR_SET_SECCOMP 22
#endif
#ifndef AT_FDCWD
#define AT_FDCWD (-100)
#endif
#ifndef AT_SYMLINK_NOFOLLOW
#define AT_SYMLINK_NOFOLLOW 0x100
#endif
#ifndef AT_REMOVEDIR
#define AT_REMOVEDIR 0x200
#endif
#ifndef AT_NO_AUTOMOUNT
#define AT_NO_AUTOMOUNT 0x800
#endif
#ifndef AT_EMPTY_PATH
#define AT_EMPTY_PATH 0x1000
#endif
#ifndef STATX_BASIC_STATS
#define STATX_BASIC_STATS 0x000007ffU
#endif
#ifndef AT_STATX_SYNC_AS_STAT
#define AT_STATX_SYNC_AS_STAT 0x0000
#endif
#ifndef MREMAP_FIXED
#define MREMAP_FIXED 2
#endif
#ifndef SA_RESTORER
#define SA_RESTORER 0x04000000
#endif
#ifndef CPUCLOCK_PROF
#define CPUCLOCK_PROF 0
#endif
#ifndef CPUCLOCK_VIRT
#define CPUCLOCK_VIRT 1
#endif
#ifndef CPUCLOCK_SCHED
#define CPUCLOCK_SCHED 2
#endif
#ifndef CPUCLOCK_PERTHREAD_MASK
#define CPUCLOCK_PERTHREAD_MASK 4
#endif
#ifndef MAKE_PROCESS_CPUCLOCK
#define MAKE_PROCESS_CPUCLOCK(pid, clock) \
((int)(~(unsigned)(pid) << 3) | (int)(clock))
#endif
#ifndef MAKE_THREAD_CPUCLOCK
#define MAKE_THREAD_CPUCLOCK(tid, clock) \
((int)(~(unsigned)(tid) << 3) | \
(int)((clock) | CPUCLOCK_PERTHREAD_MASK))
#endif
#ifndef FUTEX_WAIT
#define FUTEX_WAIT 0
#endif
#ifndef FUTEX_WAKE
#define FUTEX_WAKE 1
#endif
#ifndef FUTEX_FD
#define FUTEX_FD 2
#endif
#ifndef FUTEX_REQUEUE
#define FUTEX_REQUEUE 3
#endif
#ifndef FUTEX_CMP_REQUEUE
#define FUTEX_CMP_REQUEUE 4
#endif
#ifndef FUTEX_WAKE_OP
#define FUTEX_WAKE_OP 5
#endif
#ifndef FUTEX_LOCK_PI
#define FUTEX_LOCK_PI 6
#endif
#ifndef FUTEX_UNLOCK_PI
#define FUTEX_UNLOCK_PI 7
#endif
#ifndef FUTEX_TRYLOCK_PI
#define FUTEX_TRYLOCK_PI 8
#endif
#ifndef FUTEX_PRIVATE_FLAG
#define FUTEX_PRIVATE_FLAG 128
#endif
#ifndef FUTEX_CMD_MASK
#define FUTEX_CMD_MASK ~FUTEX_PRIVATE_FLAG
#endif
#ifndef FUTEX_WAIT_PRIVATE
#define FUTEX_WAIT_PRIVATE (FUTEX_WAIT | FUTEX_PRIVATE_FLAG)
#endif
#ifndef FUTEX_WAKE_PRIVATE
#define FUTEX_WAKE_PRIVATE (FUTEX_WAKE | FUTEX_PRIVATE_FLAG)
#endif
#ifndef FUTEX_REQUEUE_PRIVATE
#define FUTEX_REQUEUE_PRIVATE (FUTEX_REQUEUE | FUTEX_PRIVATE_FLAG)
#endif
#ifndef FUTEX_CMP_REQUEUE_PRIVATE
#define FUTEX_CMP_REQUEUE_PRIVATE (FUTEX_CMP_REQUEUE | FUTEX_PRIVATE_FLAG)
#endif
#ifndef FUTEX_WAKE_OP_PRIVATE
#define FUTEX_WAKE_OP_PRIVATE (FUTEX_WAKE_OP | FUTEX_PRIVATE_FLAG)
#endif
#ifndef FUTEX_LOCK_PI_PRIVATE
#define FUTEX_LOCK_PI_PRIVATE (FUTEX_LOCK_PI | FUTEX_PRIVATE_FLAG)
#endif
#ifndef FUTEX_UNLOCK_PI_PRIVATE
#define FUTEX_UNLOCK_PI_PRIVATE (FUTEX_UNLOCK_PI | FUTEX_PRIVATE_FLAG)
#endif
#ifndef FUTEX_TRYLOCK_PI_PRIVATE
#define FUTEX_TRYLOCK_PI_PRIVATE (FUTEX_TRYLOCK_PI | FUTEX_PRIVATE_FLAG)
#endif
#if defined(__x86_64__)
#ifndef ARCH_SET_GS
#define ARCH_SET_GS 0x1001
#endif
#ifndef ARCH_GET_GS
#define ARCH_GET_GS 0x1004
#endif
#endif
#if defined(__i386__)
#ifndef __NR_quotactl
#define __NR_quotactl 131
#endif
#ifndef __NR_setresuid
#define __NR_setresuid 164
#define __NR_getresuid 165
#define __NR_setresgid 170
#define __NR_getresgid 171
#endif
#ifndef __NR_rt_sigaction
#define __NR_rt_sigreturn 173
#define __NR_rt_sigaction 174
#define __NR_rt_sigprocmask 175
#define __NR_rt_sigpending 176
#define __NR_rt_sigsuspend 179
#endif
#ifndef __NR_pread64