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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2018 Linaro Limited. All rights reserved.
* Author: Rafael David Tinoco <rafael.tinoco@linaro.org>
*/
/*
* Basic tests for fsetxattr(2) and make sure fsetxattr(2) handles error
* conditions correctly.
*
* There are 9 test cases:
* 1. Any other flags being set except XATTR_CREATE and XATTR_REPLACE,
* fsetxattr(2) should return -1 and set errno to EINVAL
* 2. With XATTR_REPLACE flag set but the attribute does not exist,
* fsetxattr(2) should return -1 and set errno to ENODATA
* 3. Create new attr with name length greater than XATTR_NAME_MAX(255)
* fsetxattr(2) should return -1 and set errno to ERANGE
* 4. Create new attr whose value length is greater than XATTR_SIZE_MAX(65536)
* fsetxattr(2) should return -1 and set errno to E2BIG
* 5. Create new attr whose value length is zero,
* fsetxattr(2) should succeed
* 6. Replace the attr value without XATTR_REPLACE flag being set,
* fsetxattr(2) should return -1 and set errno to EEXIST
* 7. Replace attr value with XATTR_REPLACE flag being set,
* fsetxattr(2) should succeed
* 8. Create new attr whose key length is zero,
* fsetxattr(2) should return -1 and set errno to ERANGE
* 9. Create new attr whose key is NULL,
* fsetxattr(2) should return -1 and set errno to EFAULT
*/
#include "config.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_SYS_XATTR_H
# include <sys/xattr.h>
#endif
#include "tst_test.h"
#ifdef HAVE_SYS_XATTR_H
#define XATTR_NAME_MAX 255
#define XATTR_NAME_LEN (XATTR_NAME_MAX + 2)
#define XATTR_SIZE_MAX 65536
#define XATTR_TEST_KEY "user.testkey"
#define XATTR_TEST_VALUE "this is a test value"
#define XATTR_TEST_VALUE_SIZE 20
#define MNTPOINT "mntpoint"
#define FNAME MNTPOINT"/fsetxattr01testfile"
static int fd = -1;
static char long_key[XATTR_NAME_LEN];
static char *long_value;
static char *xattr_value = XATTR_TEST_VALUE;
struct test_case {
char *key;
char **value;
size_t size;
int flags;
int exp_err;
int keyneeded;
};
struct test_case tc[] = {
{ /* case 00, invalid flags */
.key = XATTR_TEST_KEY,
.value = &xattr_value,
.size = XATTR_TEST_VALUE_SIZE,
.flags = ~0,
.exp_err = EINVAL,
},
{ /* case 01, replace non-existing attribute */
.key = XATTR_TEST_KEY,
.value = &xattr_value,
.size = XATTR_TEST_VALUE_SIZE,
.flags = XATTR_REPLACE,
.exp_err = ENODATA,
},
{ /* case 02, long key name */
.key = long_key,
.value = &xattr_value,
.size = XATTR_TEST_VALUE_SIZE,
.flags = XATTR_CREATE,
.exp_err = ERANGE,
},
{ /* case 03, long value */
.key = XATTR_TEST_KEY,
.value = &long_value,
.size = XATTR_SIZE_MAX + 1,
.flags = XATTR_CREATE,
.exp_err = E2BIG,
},
{ /* case 04, zero length value */
.key = XATTR_TEST_KEY,
.value = &xattr_value,
.size = 0,
.flags = XATTR_CREATE,
.exp_err = 0,
},
{ /* case 05, create existing attribute */
.key = XATTR_TEST_KEY,
.value = &xattr_value,
.size = XATTR_TEST_VALUE_SIZE,
.flags = XATTR_CREATE,
.exp_err = EEXIST,
.keyneeded = 1,
},
{ /* case 06, replace existing attribute */
.key = XATTR_TEST_KEY,
.value = &xattr_value,
.size = XATTR_TEST_VALUE_SIZE,
.flags = XATTR_REPLACE,
.exp_err = 0,
.keyneeded = 1,
},
{ /* case 07, zero length key */
.key = "",
.value = &xattr_value,
.size = XATTR_TEST_VALUE_SIZE,
.flags = XATTR_CREATE,
.exp_err = ERANGE,
},
{ /* case 08, NULL key */
.value = &xattr_value,
.size = XATTR_TEST_VALUE_SIZE,
.flags = XATTR_CREATE,
.exp_err = EFAULT,
},
};
static void verify_fsetxattr(unsigned int i)
{
/* some tests might require existing keys for each iteration */
if (tc[i].keyneeded) {
SAFE_FSETXATTR(fd, tc[i].key, *tc[i].value, tc[i].size,
XATTR_CREATE);
}
TEST(fsetxattr(fd, tc[i].key, *tc[i].value, tc[i].size, tc[i].flags));
if (TST_RET == -1 && TST_ERR == EOPNOTSUPP)
tst_brk(TCONF, "fsetxattr(2) not supported");
/* success */
if (!tc[i].exp_err) {
if (TST_RET) {
tst_res(TFAIL | TTERRNO,
"fsetxattr(2) failed with %li", TST_RET);
return;
}
/* this is needed for subsequent iterations */
SAFE_FREMOVEXATTR(fd, tc[i].key);
tst_res(TPASS, "fsetxattr(2) passed");
return;
}
if (TST_RET == 0) {
tst_res(TFAIL, "fsetxattr(2) passed unexpectedly");
return;
}
/* error */
if (tc[i].exp_err != TST_ERR) {
tst_res(TFAIL | TTERRNO, "fsetxattr(2) should fail with %s",
tst_strerrno(tc[i].exp_err));
return;
}
/* key might have been added AND test might have failed, remove it */
if (tc[i].keyneeded)
SAFE_FREMOVEXATTR(fd, tc[i].key);
tst_res(TPASS | TTERRNO, "fsetxattr(2) failed");
}
static void cleanup(void)
{
if (fd > 0)
SAFE_CLOSE(fd);
}
static void setup(void)
{
size_t i = 0;
snprintf(long_key, 6, "%s", "user.");
memset(long_key + 5, 'k', XATTR_NAME_LEN - 5);
long_key[XATTR_NAME_LEN - 1] = '\0';
long_value = SAFE_MALLOC(XATTR_SIZE_MAX + 2);
memset(long_value, 'v', XATTR_SIZE_MAX + 2);
long_value[XATTR_SIZE_MAX + 1] = '\0';
SAFE_TOUCH(FNAME, 0644, NULL);
fd = SAFE_OPEN(FNAME, O_RDONLY);
for (i = 0; i < ARRAY_SIZE(tc); i++) {
if (!tc[i].key)
tc[i].key = tst_get_bad_addr(cleanup);
}
}
static struct tst_test test = {
.setup = setup,
.test = verify_fsetxattr,
.cleanup = cleanup,
.tcnt = ARRAY_SIZE(tc),
.mntpoint = MNTPOINT,
.mount_device = 1,
.all_filesystems = 1,
.needs_root = 1,
};
#else /* HAVE_SYS_XATTR_H */
TST_TEST_TCONF("<sys/xattr.h> does not exist");
#endif
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