granicus.if.org Git - strace/blob - tests/fchmodat.c

   1 /*
   2  * Check decoding of fchmodat syscall.
   3  *
   4  * Copyright (c) 2016-2018 Dmitry V. Levin <ldv@altlinux.org>
   5  * All rights reserved.
   6  *
   7  * SPDX-License-Identifier: GPL-2.0-or-later
   8  */
   9
  10 #include "tests.h"
  11 #include <asm/unistd.h>
  12
  13 #ifdef __NR_fchmodat
  14
  15 # include <fcntl.h>
  16 # include <sys/stat.h>
  17 # include <stdio.h>
  18 # include <unistd.h>
  19
  20 int
  21 main(void)
  22 {
  23         static const char sample[] = "fchmodat_sample";
  24
  25         if (open(sample, O_RDONLY | O_CREAT, 0400) < 0)
  26                 perror_msg_and_fail("open");
  27
  28         long rc = syscall(__NR_fchmodat, -100, sample, 0600);
  29         printf("fchmodat(AT_FDCWD, \"%s\", 0600) = %s\n",
  30                sample, sprintrc(rc));
  31
  32         if (unlink(sample))
  33                 perror_msg_and_fail("unlink");
  34
  35         rc = syscall(__NR_fchmodat, -100, sample, 051);
  36         printf("fchmodat(AT_FDCWD, \"%s\", 051) = %s\n",
  37                sample, sprintrc(rc));
  38
  39         rc = syscall(__NR_fchmodat, -100, sample, 004);
  40         printf("fchmodat(AT_FDCWD, \"%s\", 004) = %s\n",
  41                sample, sprintrc(rc));
  42
  43         puts("+++ exited with 0 +++");
  44         return 0;
  45 }
  46
  47 #else
  48
  49 SKIP_MAIN_UNDEFINED("__NR_fchmodat")
  50
  51 #endif