memcheck/tests/linux/sys-statx.c

   1 /* Test (somewhat) stats and stat.  */
   2 #define _GNU_SOURCE
   3 #include "config.h"
   4 #include <sys/types.h>
   5 #include <sys/stat.h>
   6 #include <unistd.h>
   7 #include <fcntl.h>
   8 #include <assert.h>
   9 #include <string.h>
  10 #include <sys/syscall.h>
  11 #if defined(MUSL_LIBC)
  12 /* musl has __NR_statx but not the structs that it needs */
  13 #undef __NR_statx
  14 #else
  15 #if !defined(HAVE_STRUCT_STATX_IN_SYS_STAT_H)
  16 #include <linux/stat.h>
  17 #endif /* HAVE_STRUCT_STATX_IN_SYS_STAT_H */
  18 #endif /* MUSL_LIBC */
  19 #include <errno.h>
  20
  21 int check_stat2;
  22
  23 #define field(fieldname,s) s->st_##fieldname
  24 #if defined(__NR_statx)
  25 #define checkfield(fieldname) \
  26    assert(!check_stat2 || stat1.st_##fieldname == stat2.stx_##fieldname)
  27 #else
  28 #define checkfield(fieldname) \
  29    assert(!check_stat2 || stat1.st_##fieldname == stat2.st_##fieldname)
  30 #endif
  31
  32 int main (void)
  33 {
  34    struct stat stat1;
  35
  36    memset(&stat1, 0x55, sizeof(stat1));
  37
  38    assert (stat ("/tmp", &stat1) == 0);
  39 #if defined(__NR_statx)
  40    struct statx stat2;
  41    memset(&stat2, 0x22, sizeof(stat2));
  42    if (syscall (__NR_statx, 0, "/tmp", 0, STATX_ALL, &stat2) == 0)
  43       check_stat2 = 1;
  44    else {
  45       if (errno == ENOSYS)
  46          check_stat2 = 0; // Defined but not provided by kernel.
  47       else
  48          check_stat2 = 1; // Probably better fail ...
  49    }
  50 #else
  51    struct stat stat2;
  52    check_stat2 = 1;
  53    memset(&stat2, 0x22, sizeof(stat2));
  54    assert (stat ("/tmp", &stat2) == 0);
  55 #endif
  56
  57    checkfield(nlink);
  58    checkfield(uid);
  59    checkfield(gid);
  60    checkfield(mode);
  61    checkfield(ino);
  62
  63    return 0;
  64 }