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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) International Business Machines Corp., 2001
* 07/2001 ported by John George
* Copyright (c) 2022 SUSE LLC Avinesh Kumar <avinesh.kumar@suse.com>
*/
/*\
* [Description]
*
* Verify that the system call utime() successfully changes the last
* access and modification times of a file to the current time,
* under the following constraints:
*
* - The times argument is NULL.
* - The user ID of the process is not "root".
* - The file is owned by the user ID of the process.
*/
#include <utime.h>
#include <pwd.h>
#include "tst_test.h"
#include "tst_clocks.h"
#define MNT_POINT "mntpoint"
#define TEMP_FILE MNT_POINT"/tmp_file"
#define FILE_MODE 0444
#define TEST_USERNAME "nobody"
static void setup(void)
{
struct passwd *pw;
pw = SAFE_GETPWNAM(TEST_USERNAME);
SAFE_TOUCH(TEMP_FILE, FILE_MODE, NULL);
SAFE_CHOWN(TEMP_FILE, pw->pw_uid, pw->pw_gid);
tst_res(TINFO, "Switching effective user ID to user: %s", pw->pw_name);
SAFE_SETEUID(pw->pw_uid);
}
static void run(void)
{
struct utimbuf utbuf;
struct stat stat_buf;
time_t pre_time, post_time;
utbuf.modtime = tst_get_fs_timestamp() - 5;
utbuf.actime = utbuf.modtime + 1;
TST_EXP_PASS_SILENT(utime(TEMP_FILE, &utbuf));
SAFE_STAT(TEMP_FILE, &stat_buf);
TST_EXP_EQ_LI(stat_buf.st_atime, utbuf.actime);
TST_EXP_EQ_LI(stat_buf.st_mtime, utbuf.modtime);
pre_time = tst_get_fs_timestamp();
TST_EXP_PASS(utime(TEMP_FILE, NULL), "utime(%s, NULL)", TEMP_FILE);
if (!TST_PASS)
return;
post_time = tst_get_fs_timestamp();
SAFE_STAT(TEMP_FILE, &stat_buf);
if (stat_buf.st_mtime < pre_time || stat_buf.st_mtime > post_time)
tst_res(TFAIL, "utime() did not set expected mtime, "
"pre_time: %ld, post_time: %ld, st_mtime: %ld",
pre_time, post_time, stat_buf.st_mtime);
if (stat_buf.st_atime < pre_time || stat_buf.st_atime > post_time)
tst_res(TFAIL, "utime() did not set expected atime, "
"pre_time: %ld, post_time: %ld, st_atime: %ld",
pre_time, post_time, stat_buf.st_atime);
}
static struct tst_test test = {
.test_all = run,
.setup = setup,
.needs_root = 1,
.mntpoint = MNT_POINT,
.mount_device = 1,
.all_filesystems = 1,
.skip_filesystems = (const char *const[]) {
"vfat",
"exfat",
NULL
}
};
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