Add hostinfo

TODO.md

@@ -12,8 +12,8 @@
 1. [x] print-cache
 1. [x] print-disabled
 1. [x] plist
-1. [ ] procinfo
-1. [ ] hostinfo
+1. [x] procinfo
+1. [x] hostinfo
 1. [ ] resolveport
 1. [x] limit
 1. [x] runstats

launchctl.c

@@ -73,7 +73,7 @@ static const struct {
 	{ "print-disabled", "Prints which services are disabled.", NULL, print_disabled_cmd },
 	{ "plist", "Prints a property list embedded in a binary (targets the Info.plist by default).", "[segment,section] <path>", plist_cmd },
 	{ "procinfo", "Prints port information about a process.", "<pid>", procinfo_cmd },
-	{ "hostinfo", "Prints port information about the host.", NULL, todo_cmd },
+	{ "hostinfo", "Prints port information about the host.", NULL, hostinfo_cmd },
 	{ "resolveport", "Resolves a port name from a process to an endpoint in launchd.", "<owner-pid> <port-name>", todo_cmd },
 	{ "limit", "Reads or modifies launchd's resource limits.", "[<limit-name> [<both-limits> | <soft-limit> <hard-limit>]", limit_cmd },
 	{ "runstats", "Prints performance statistics for a service.", "<service-target>", runstats_cmd },

launchctl.h

@@ -120,6 +120,7 @@ cmd_main dumpjpcategory_cmd;
 
 // procinfo.c
 cmd_main procinfo_cmd;
+cmd_main hostinfo_cmd;
 
 void launchctl_xpc_object_print(xpc_object_t, const char *name, int level);
 int launchctl_send_xpc_to_launchd(uint64_t routine, xpc_object_t msg, xpc_object_t *reply);

procinfo.c

@@ -44,7 +44,8 @@
 #include "launchctl.h"
 
 /* #include <mach/port_descriptions.h> */
-const char *mach_task_special_port_description(int offset);
+const char *mach_host_special_port_description(int port);
+const char *mach_task_special_port_description(int port);
 /* END <mach/mach/port_descriptions.h> */
 
 #include <sys/proc_info.h>
@@ -600,3 +601,28 @@ procinfo_launchd_info: {}
     printf("\n");
     return 0;
 }
+
+int
+hostinfo_cmd(xpc_object_t *msg, int argc, char **argv, char **envp, char **apple) {
+    for (int i = 0; i < HOST_MAX_SPECIAL_PORT; i++) {
+        mach_port_t port;
+        int retval = host_get_special_port(mach_host_self(), HOST_LOCAL_NODE, i, &port);
+        if (retval || !MACH_PORT_VALID(port)) continue;
+        char* type = get_port_type(port);
+        printf("host-%s port = 0x%x %s\n", mach_host_special_port_description(i), port, type);
+        free(type);
+    }
+
+    exception_mask_t masks[EXC_TYPES_COUNT];
+    mach_msg_type_number_t masksCnt;
+    exception_handler_t old_handlers[EXC_TYPES_COUNT];
+    exception_behavior_t old_behaviors[EXC_TYPES_COUNT];
+    thread_state_flavor_t old_flavors[EXC_TYPES_COUNT];
+    kern_return_t kr = host_get_exception_ports(mach_host_self(), 0x3ffe, masks, &masksCnt, old_handlers, old_behaviors, old_flavors);
+    if (kr) {
+        fprintf(stderr, "host_get_exception_ports(): 0x%x\n", kr);
+    } else {
+        print_exception_port_info(0, masks, masksCnt, old_handlers);
+    }
+    return 0;
+}