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// SPDX-License-Identifier: GPL-2.0-or-later
/* Copyright (c) International Business Machines Corp., 2001
* 07/2001 John George
* -Ported
*
* check stat() with various error conditions that should produce
* EACCES, EFAULT, ENAMETOOLONG, ENOENT, ENOTDIR, ELOOP
*/
#include <fcntl.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <pwd.h>
#include "tst_test.h"
#define TST_EACCES_DIR "tst_eaccesdir"
#define TST_EACCES_FILE "tst_eaccesdir/tst"
#define TST_ENOENT "tst_enoent/tst"
#define TST_ENOTDIR_DIR "tst_enotdir/tst"
#define TST_ENOTDIR_FILE "tst_enotdir"
#define MODE_RW 0666
#define DIR_MODE 0755
struct passwd *ltpuser;
static char long_dir[PATH_MAX + 2] = {[0 ... PATH_MAX + 1] = 'a'};
static char loop_dir[PATH_MAX] = ".";
static struct tcase{
char *pathname;
int exp_errno;
} TC[] = {
{TST_EACCES_FILE, EACCES},
{NULL, EFAULT},
{long_dir, ENAMETOOLONG},
{TST_ENOENT, ENOENT},
{TST_ENOTDIR_DIR, ENOTDIR},
{loop_dir, ELOOP}
};
static void verify_stat(unsigned int n)
{
struct tcase *tc = TC + n;
struct stat stat_buf;
TEST(stat(tc->pathname, &stat_buf));
if (TST_RET != -1) {
tst_res(TFAIL, "stat() succeeded unexpectedly");
return;
}
if (TST_ERR == tc->exp_errno) {
tst_res(TPASS | TTERRNO, "stat() failed as expected");
} else {
tst_res(TFAIL | TTERRNO,
"stat() failed unexpectedly; expected: %d - %s",
tc->exp_errno, tst_strerrno(tc->exp_errno));
}
}
static void setup(void)
{
unsigned int i;
ltpuser = SAFE_GETPWNAM("nobody");
SAFE_SETUID(ltpuser->pw_uid);
SAFE_MKDIR(TST_EACCES_DIR, DIR_MODE);
SAFE_TOUCH(TST_EACCES_FILE, DIR_MODE, NULL);
SAFE_CHMOD(TST_EACCES_DIR, MODE_RW);
for (i = 0; i < ARRAY_SIZE(TC); i++) {
if (TC[i].exp_errno == EFAULT)
TC[i].pathname = tst_get_bad_addr(NULL);
}
SAFE_TOUCH(TST_ENOTDIR_FILE, DIR_MODE, NULL);
SAFE_MKDIR("test_eloop", DIR_MODE);
SAFE_SYMLINK("../test_eloop", "test_eloop/test_eloop");
for (i = 0; i < 43; i++)
strcat(loop_dir, "/test_eloop");
}
static struct tst_test test = {
.tcnt = ARRAY_SIZE(TC),
.needs_tmpdir = 1,
.needs_root = 1,
.setup = setup,
.test = verify_stat,
};
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