memcheck/tests/linux/capget.c

   1 #include "../../../config.h"
   2
   3 #if defined(linux) && !defined(MUSL_LIBC)
   4
   5
   6 #include <stdio.h>            /* printf() */
   7 #include <unistd.h>           /* syscall() */
   8 #include <sys/syscall.h>      /* __NR_capget */
   9 #include <sys/types.h>        /* uid_t */
  10 #include <linux/capability.h> /* _LINUX_CAPABILITY_VERSION */
  11
  12
  13 int main()
  14 {
  15   struct __user_cap_header_struct h;
  16   struct __user_cap_data_struct d;
  17   int syscall_result;
  18
  19   if (getuid() == 0)
  20     fprintf(stderr, "Running as root\n");
  21   h.version = _LINUX_CAPABILITY_VERSION;
  22   h.pid = 0;
  23   syscall_result = syscall(__NR_capget, &h, &d);
  24   if (syscall_result >= 0)
  25   {
  26     fprintf(stderr,
  27             "capget result:\n"
  28             "effective   %#x\n"
  29             "permitted   %#x\n"
  30             "inheritable %#x\n",
  31             d.effective,
  32             d.permitted,
  33             d.inheritable);
  34   }
  35   else
  36   {
  37     perror("capget");
  38   }
  39   return 0;
  40 }
  41
  42
  43 #else
  44
  45
  46 #include <stdio.h>
  47
  48 int main()
  49 {
  50   fprintf(stderr, "This program is Linux with GNU libc specific\n");
  51   return 0;
  52 }
  53
  54
  55 #endif