unplugged-system/external/ltp/testcases/kernel/syscalls/fstat/fstat02.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) International Business Machines Corp., 2001
* 07/2001 Ported by Wayne Boyer
* 05/2019 Ported to new library: Christian Amann <camann@suse.com>
*/
/*\
* [Description]
*
* Tests if fstat() returns correctly and reports correct file information
* using the stat structure.
*/
#include "tst_test.h"
#define TESTFILE "test_file"
#define LINK_TESTFILE "link_test_file"
#define FILE_SIZE 1024
#define FILE_MODE 0644
#define NLINK 2
static struct stat stat_buf;
static uid_t user_id;
static gid_t group_id;
static int fildes;
static void run(void)
{
TST_EXP_PASS(fstat(fildes, &stat_buf));
TST_EXP_EQ_LU(stat_buf.st_uid, user_id);
TST_EXP_EQ_LU(stat_buf.st_gid, group_id);
TST_EXP_EQ_LI(stat_buf.st_size, FILE_SIZE);
TST_EXP_EQ_LU(stat_buf.st_mode & 0777, FILE_MODE);
TST_EXP_EQ_LU(stat_buf.st_nlink, NLINK);
}
static void setup(void)
{
user_id = getuid();
group_id = getgid();
umask(0);
fildes = SAFE_OPEN(TESTFILE, O_WRONLY | O_CREAT, FILE_MODE);
if (tst_fill_file(TESTFILE, 'a', FILE_SIZE, 1))
tst_brk(TBROK, "Could not fill test file");
SAFE_LINK(TESTFILE, LINK_TESTFILE);
}
static void cleanup(void)
{
if (fildes > 0)
SAFE_CLOSE(fildes);
}
static struct tst_test test = {
.test_all = run,
.setup = setup,
.cleanup = cleanup,
.needs_tmpdir = 1,
};