1/* Basic tests for stat, lstat, fstat, and fstatat.
2 Copyright (C) 2021-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <array_length.h>
20#include <errno.h>
21#include <fcntl.h>
22#include <support/check.h>
23#include <support/support.h>
24#include <support/temp_file.h>
25#include <support/xunistd.h>
26#include <sys/stat.h>
27#include <sys/sysmacros.h>
28#include <stdio.h>
29#include <unistd.h>
30
31static void
32stat_check (int fd, const char *path, struct stat *st)
33{
34 TEST_COMPARE (stat (path, st), 0);
35}
36
37static void
38lstat_check (int fd, const char *path, struct stat *st)
39{
40 TEST_COMPARE (lstat (path, st), 0);
41}
42
43static void
44fstat_check (int fd, const char *path, struct stat *st)
45{
46 /* Test for invalid fstat input (BZ #27559). */
47 TEST_COMPARE (fstat (AT_FDCWD, st), -1);
48 TEST_COMPARE (errno, EBADF);
49
50 TEST_COMPARE (fstat (fd, st), 0);
51}
52
53static void
54fstatat_check (int fd, const char *path, struct stat *st)
55{
56 TEST_COMPARE (fstatat (fd, "", st, 0), -1);
57 TEST_COMPARE (errno, ENOENT);
58
59 TEST_COMPARE (fstatat (fd, path, st, 0), 0);
60}
61
62typedef void (*test_t)(int, const char *path, struct stat *);
63
64static int
65do_test (void)
66{
67 char *path;
68 int fd = create_temp_file (base: "tst-fstat.", filename: &path);
69 TEST_VERIFY_EXIT (fd >= 0);
70 support_write_file_string (path, contents: "abc");
71
72 /* This should help to prevent delayed allocation, which may result
73 in a spurious stx_blocks/st_blocks difference. */
74 fsync (fd);
75
76 bool check_ns = support_stat_nanoseconds (path);
77 if (!check_ns)
78 printf (format: "warning: timestamp with nanoseconds not supported\n");
79
80 struct statx stx;
81 TEST_COMPARE (statx (fd, path, 0, STATX_BASIC_STATS, &stx), 0);
82
83 test_t tests[] = { stat_check, lstat_check, fstat_check, fstatat_check };
84
85 for (int i = 0; i < array_length (tests); i++)
86 {
87 struct stat st;
88 tests[i](fd, path, &st);
89
90 TEST_COMPARE (stx.stx_dev_major, major (st.st_dev));
91 TEST_COMPARE (stx.stx_dev_minor, minor (st.st_dev));
92 TEST_COMPARE (stx.stx_ino, st.st_ino);
93 TEST_COMPARE (stx.stx_mode, st.st_mode);
94 TEST_COMPARE (stx.stx_nlink, st.st_nlink);
95 TEST_COMPARE (stx.stx_uid, st.st_uid);
96 TEST_COMPARE (stx.stx_gid, st.st_gid);
97 TEST_COMPARE (stx.stx_rdev_major, major (st.st_rdev));
98 TEST_COMPARE (stx.stx_rdev_minor, minor (st.st_rdev));
99 TEST_COMPARE (stx.stx_blksize, st.st_blksize);
100 TEST_COMPARE (stx.stx_blocks, st.st_blocks);
101
102 TEST_COMPARE (stx.stx_ctime.tv_sec, st.st_ctim.tv_sec);
103 TEST_COMPARE (stx.stx_mtime.tv_sec, st.st_mtim.tv_sec);
104 if (check_ns)
105 {
106 TEST_COMPARE (stx.stx_ctime.tv_nsec, st.st_ctim.tv_nsec);
107 TEST_COMPARE (stx.stx_mtime.tv_nsec, st.st_mtim.tv_nsec);
108 }
109 }
110
111 return 0;
112}
113
114#include <support/test-driver.c>
115

source code of glibc/io/tst-stat.c