src/test/test-stat-util.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2010 Lennart Poettering
   6 ***/
   7
   8 #include <fcntl.h>
   9 #include <linux/magic.h>
  10 #include <unistd.h>
  11
  12 #include "alloc-util.h"
  13 #include "fd-util.h"
  14 #include "fileio.h"
  15 #include "macro.h"
  16 #include "missing.h"
  17 #include "mount-util.h"
  18 #include "stat-util.h"
  19
  20 static void test_files_same(void) {
  21         _cleanup_close_ int fd = -1;
  22         char name[] = "/tmp/test-files_same.XXXXXX";
  23         char name_alias[] = "/tmp/test-files_same.alias";
  24
  25         fd = mkostemp_safe(name);
  26         assert_se(fd >= 0);
  27         assert_se(symlink(name, name_alias) >= 0);
  28
  29         assert_se(files_same(name, name, 0));
  30         assert_se(files_same(name, name, AT_SYMLINK_NOFOLLOW));
  31         assert_se(files_same(name, name_alias, 0));
  32         assert_se(!files_same(name, name_alias, AT_SYMLINK_NOFOLLOW));
  33
  34         unlink(name);
  35         unlink(name_alias);
  36 }
  37
  38 static void test_is_symlink(void) {
  39         char name[] = "/tmp/test-is_symlink.XXXXXX";
  40         char name_link[] = "/tmp/test-is_symlink.link";
  41         _cleanup_close_ int fd = -1;
  42
  43         fd = mkostemp_safe(name);
  44         assert_se(fd >= 0);
  45         assert_se(symlink(name, name_link) >= 0);
  46
  47         assert_se(is_symlink(name) == 0);
  48         assert_se(is_symlink(name_link) == 1);
  49         assert_se(is_symlink("/a/file/which/does/not/exist/i/guess") < 0);
  50
  51         unlink(name);
  52         unlink(name_link);
  53 }
  54
  55 static void test_path_is_fs_type(void) {
  56         /* run might not be a mount point in build chroots */
  57         if (path_is_mount_point("/run", NULL, AT_SYMLINK_FOLLOW) > 0) {
  58                 assert_se(path_is_fs_type("/run", TMPFS_MAGIC) > 0);
  59                 assert_se(path_is_fs_type("/run", BTRFS_SUPER_MAGIC) == 0);
  60         }
  61         assert_se(path_is_fs_type("/proc", PROC_SUPER_MAGIC) > 0);
  62         assert_se(path_is_fs_type("/proc", BTRFS_SUPER_MAGIC) == 0);
  63         assert_se(path_is_fs_type("/proc", BTRFS_SUPER_MAGIC) == 0);
  64         assert_se(path_is_fs_type("/i-dont-exist", BTRFS_SUPER_MAGIC) == -ENOENT);
  65 }
  66
  67 static void test_path_is_temporary_fs(void) {
  68         /* run might not be a mount point in build chroots */
  69         if (path_is_mount_point("/run", NULL, AT_SYMLINK_FOLLOW) > 0)
  70                 assert_se(path_is_temporary_fs("/run") > 0);
  71         assert_se(path_is_temporary_fs("/proc") == 0);
  72         assert_se(path_is_temporary_fs("/i-dont-exist") == -ENOENT);
  73 }
  74
  75 int main(int argc, char *argv[]) {
  76         test_files_same();
  77         test_is_symlink();
  78         test_path_is_fs_type();
  79         test_path_is_temporary_fs();
  80
  81         return 0;
  82 }