150 lines
3.3 KiB
C
150 lines
3.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2018 Linaro Limited. All rights reserved.
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* Author: Rafael David Tinoco <rafael.tinoco@linaro.org>
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*/
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/*
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* Basic tests for fgetxattr(2) and make sure fgetxattr(2) handles error
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* conditions correctly.
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*
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* There are 3 test cases:
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* 1. Get an non-existing attribute:
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* - fgetxattr(2) should return -1 and set errno to ENODATA
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* 2. Buffer size is smaller than attribute value size:
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* - fgetxattr(2) should return -1 and set errno to ERANGE
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* 3. Get attribute, fgetxattr(2) should succeed:
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* - verify the attribute got by fgetxattr(2) is same as the value we set
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*/
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#include "config.h"
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_SYS_XATTR_H
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# include <sys/xattr.h>
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#endif
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#include "tst_test.h"
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#ifdef HAVE_SYS_XATTR_H
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#define XATTR_SIZE_MAX 65536
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#define XATTR_TEST_KEY "user.testkey"
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#define XATTR_TEST_VALUE "this is a test value"
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#define XATTR_TEST_VALUE_SIZE 20
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#define XATTR_TEST_INVALID_KEY "user.nosuchkey"
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#define MNTPOINT "mntpoint"
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#define FNAME MNTPOINT"/fgetxattr01testfile"
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static int fd = -1;
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struct test_case {
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char *key;
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char *value;
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size_t size;
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int exp_ret;
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int exp_err;
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};
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struct test_case tc[] = {
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{ /* case 00, get non-existing attribute */
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.key = XATTR_TEST_INVALID_KEY,
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.value = NULL,
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.size = XATTR_SIZE_MAX,
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.exp_ret = -1,
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.exp_err = ENODATA,
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},
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{ /* case 01, small value buffer */
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.key = XATTR_TEST_KEY,
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.value = NULL,
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.size = 1,
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.exp_ret = -1,
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.exp_err = ERANGE,
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},
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{ /* case 02, get existing attribute */
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.key = XATTR_TEST_KEY,
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.value = NULL,
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.size = XATTR_TEST_VALUE_SIZE,
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.exp_ret = XATTR_TEST_VALUE_SIZE,
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.exp_err = 0,
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},
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};
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static void verify_fgetxattr(unsigned int i)
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{
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TEST(fgetxattr(fd, tc[i].key, tc[i].value, tc[i].size));
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if (TST_RET == -1 && TST_ERR == EOPNOTSUPP)
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tst_brk(TCONF, "fgetxattr(2) not supported");
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if (TST_RET >= 0) {
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if (tc[i].exp_ret == TST_RET)
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tst_res(TPASS, "fgetxattr(2) passed");
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else
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tst_res(TFAIL, "fgetxattr(2) passed unexpectedly");
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if (strncmp(tc[i].value, XATTR_TEST_VALUE,
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XATTR_TEST_VALUE_SIZE)) {
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tst_res(TFAIL, "wrong value, expect \"%s\" got \"%s\"",
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XATTR_TEST_VALUE, tc[i].value);
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}
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tst_res(TPASS, "got the right value");
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}
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if (tc[i].exp_err == TST_ERR) {
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tst_res(TPASS | TTERRNO, "fgetxattr(2) passed");
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return;
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}
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tst_res(TFAIL | TTERRNO, "fgetxattr(2) failed");
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}
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static void setup(void)
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{
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size_t i = 0;
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SAFE_TOUCH(FNAME, 0644, NULL);
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fd = SAFE_OPEN(FNAME, O_RDONLY, NULL);
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for (i = 0; i < ARRAY_SIZE(tc); i++) {
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tc[i].value = SAFE_MALLOC(tc[i].size);
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memset(tc[i].value, 0, tc[i].size);
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}
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SAFE_FSETXATTR(fd, XATTR_TEST_KEY, XATTR_TEST_VALUE,
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XATTR_TEST_VALUE_SIZE, XATTR_CREATE);
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}
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static void cleanup(void)
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{
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size_t i = 0;
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for (i = 0; i < ARRAY_SIZE(tc); i++)
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free(tc[i].value);
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if (fd > 0)
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SAFE_CLOSE(fd);
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}
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static struct tst_test test = {
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.setup = setup,
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.test = verify_fgetxattr,
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.cleanup = cleanup,
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.tcnt = ARRAY_SIZE(tc),
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.mntpoint = MNTPOINT,
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.mount_device = 1,
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.all_filesystems = 1,
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.needs_root = 1,
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};
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#else /* HAVE_SYS_XATTR_H */
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TST_TEST_TCONF("<sys/xattr.h> does not exist");
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#endif
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