1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2016 Fujitsu Ltd.
4 * Author: Jinbao Huang <huangjb.jy@cn.fujitsu.com>
5 */
6
7 /*
8 * Test Name: lgetxattr02
9 *
10 * Description:
11 * 1) lgetxattr(2) fails if the named attribute does not exist.
12 * 2) lgetxattr(2) fails if the size of the value buffer is too small
13 * to hold the result.
14 * 3) lgetxattr(2) fails when attemptes to read from a invalid address.
15 *
16 * Expected Result:
17 * 1) lgetxattr(2) should return -1 and set errno to ENODATA.
18 * 2) lgetxattr(2) should return -1 and set errno to ERANGE.
19 * 3) lgetxattr(2) should return -1 and set errno to EFAULT.
20 */
21
22 #include "config.h"
23 #include <errno.h>
24 #include <sys/types.h>
25 #include <string.h>
26
27 #ifdef HAVE_SYS_XATTR_H
28 # include <sys/xattr.h>
29 #endif
30
31 #include "tst_test.h"
32
33 #ifdef HAVE_SYS_XATTR_H
34
35 #define SECURITY_KEY "security.ltptest"
36 #define VALUE "this is a test value"
37
38 static struct test_case {
39 const char *path;
40 size_t size;
41 int exp_err;
42 } tcase[] = {
43 {"testfile", sizeof(VALUE), ENODATA},
44 {"symlink", 1, ERANGE},
45 {(char *)-1, sizeof(VALUE), EFAULT}
46 };
47
verify_lgetxattr(unsigned int n)48 static void verify_lgetxattr(unsigned int n)
49 {
50 struct test_case *tc = tcase + n;
51 char buf[tc->size];
52
53 TEST(lgetxattr(tc->path, SECURITY_KEY, buf, sizeof(buf)));
54 if (TST_RET != -1) {
55 tst_res(TFAIL, "lgetxattr() succeeded unexpectedly");
56 return;
57 }
58
59 if (TST_ERR != tc->exp_err) {
60 tst_res(TFAIL | TTERRNO, "lgetxattr() failed unexpectedlly, "
61 "expected %s", tst_strerrno(tc->exp_err));
62 } else {
63 tst_res(TPASS | TTERRNO, "lgetxattr() failed as expected");
64 }
65 }
66
setup(void)67 static void setup(void)
68 {
69 int res;
70
71 SAFE_TOUCH("testfile", 0644, NULL);
72 SAFE_SYMLINK("testfile", "symlink");
73
74 res = lsetxattr("symlink", SECURITY_KEY, VALUE, strlen(VALUE), XATTR_CREATE);
75 if (res == -1) {
76 if (errno == ENOTSUP) {
77 tst_brk(TCONF, "no xattr support in fs or "
78 "mounted without user_xattr option");
79 } else {
80 tst_brk(TBROK | TERRNO, "lsetxattr(%s) failed",
81 SECURITY_KEY);
82 }
83 }
84 }
85
86 static struct tst_test test = {
87 .needs_tmpdir = 1,
88 .needs_root = 1,
89 .test = verify_lgetxattr,
90 .tcnt = ARRAY_SIZE(tcase),
91 .setup = setup
92 };
93
94 #else /* HAVE_SYS_XATTR_H */
95 TST_TEST_TCONF("<sys/xattr.h> does not exist.");
96 #endif
97