src/vip-agent/vip-release-agent.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include <stdarg.h>
   4 #include <unistd.h>
   5 #include <sys/mount.h>
   6 #include <errno.h>
   7 #include <sys/wait.h>
   8 #include <sys/types.h>
   9 #include <sys/stat.h>
  10 #include <fcntl.h>
  11 #include <dirent.h>
  12 #include "trace.h"
  13 #include "vip-process.h"
  14
  15 #define TIZEN_DEBUG_MODE_FILE   "/opt/etc/.debugmode"
  16 #define DUMP_PATH "/usr/bin/all_log_dump.sh"
  17 #define REBOOT_PATH "/usr/sbin/reboot"
  18
  19 static int check_debugenable(void)
  20 {
  21         if (access(TIZEN_DEBUG_MODE_FILE, F_OK) == 0)
  22                 return 1;
  23         else
  24                 return 0;
  25 }
  26
  27 static int run_exec(char **argv)
  28 {
  29         int status = 0;
  30         pid_t pid = 0;
  31         char buf[256];
  32
  33         if (argv == NULL)
  34                 return -3;
  35
  36         pid = fork();
  37
  38         if (pid == -1)
  39                 return -1;
  40
  41         if (pid == 0) {
  42                 setpgid(0, 0);
  43                 if (execv(argv[0], argv) == -1) {
  44                         strerror_r(errno, buf, sizeof(buf));
  45                         _E("Error execv: %s.\n", buf);
  46                         _exit(-1);
  47                 }
  48                 _exit(1);
  49         }
  50         do {
  51                 if (waitpid(pid, &status, 0) == -1) {
  52                         if (errno != EINTR)
  53                                 return -1;
  54                 }
  55                 else {
  56                         return status;
  57                 }
  58         } while (1);
  59 }
  60
  61 int main(int argc, char *argv[])
  62 {
  63         int checkfd;
  64         char *dumpargv[3] = {DUMP_PATH, NULL, NULL};
  65         char *rebootargv[4] = {REBOOT_PATH, "silent", NULL, NULL};
  66         DIR *dir = 0;
  67
  68         dir = opendir(VIP_CGROUP);
  69         if (!dir) {
  70                 _E("doesn't support cgroup release agent");
  71                 return 0;
  72         }
  73         closedir(dir);
  74
  75         _E("call release agent : [%d:%s]\n", argc, argv[1]);
  76
  77         /* check previous process */
  78         if (access(CHECK_RELEASE_PROGRESS, F_OK) == 0)
  79                 return 0;
  80
  81         /* make tmp file */
  82         checkfd = creat(CHECK_RELEASE_PROGRESS, 0640);
  83         if (checkfd < 0) {
  84                 _E("fail to make %s file\n", CHECK_RELEASE_PROGRESS);
  85                 checkfd = 0;
  86         }
  87
  88         /* unmount cgroup for preventing launching another release-agent */
  89         _E("systemd service stop");
  90         umount2("/sys/fs/cgroup", MNT_FORCE |MNT_DETACH);
  91
  92         /* check debug level */
  93         if (check_debugenable())
  94                 run_exec(dumpargv);
  95
  96         /* clear tmp file */
  97         if (checkfd) {
  98                 if (unlink(CHECK_RELEASE_PROGRESS) < 0)
  99                         _E("fail to remove %s file\n", CHECK_RELEASE_PROGRESS);
 100                 close(checkfd);
 101         }
 102
 103         sync();
 104
 105         run_exec(rebootargv);
 106         return 0;
 107 }
 108