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: lgetxattr01
9 *
10 * Description:
11 * The testcase checks the basic functionality of the lgetxattr(2).
12 * In the case of a symbolic link, we only get the value of the
13 * extended attribute related to the link itself by name.
14 *
15 */
16
17 #include "config.h"
18 #include <errno.h>
19 #include <sys/types.h>
20 #include <string.h>
21
22 #ifdef HAVE_SYS_XATTR_H
23 # include <sys/xattr.h>
24 #endif
25
26 #include "tst_test.h"
27
28 #ifdef HAVE_SYS_XATTR_H
29
30 #define SECURITY_KEY1 "security.ltptest1"
31 #define SECURITY_KEY2 "security.ltptest2"
32 #define VALUE1 "test1"
33 #define VALUE2 "test2"
34
set_xattr(char * path,char * key,void * value,size_t size)35 static void set_xattr(char *path, char *key, void *value, size_t size)
36 {
37 int res;
38
39 res = lsetxattr(path, key, value, size, XATTR_CREATE);
40 if (res == -1) {
41 if (errno == ENOTSUP) {
42 tst_brk(TCONF,
43 "no xattr support in fs or mounted "
44 "without user_xattr option");
45 } else {
46 tst_brk(TBROK | TERRNO, "lsetxattr(%s) failed", key);
47 }
48 }
49 }
50
setup(void)51 static void setup(void)
52 {
53 SAFE_TOUCH("testfile", 0644, NULL);
54 SAFE_SYMLINK("testfile", "symlink");
55
56 set_xattr("testfile", SECURITY_KEY1, VALUE1, strlen(VALUE1));
57 set_xattr("symlink", SECURITY_KEY2, VALUE2, strlen(VALUE2));
58 }
59
verify_lgetxattr(void)60 static void verify_lgetxattr(void)
61 {
62 int size = 64;
63 char buf[size];
64
65 TEST(lgetxattr("symlink", SECURITY_KEY2, buf, size));
66 if (TST_RET == -1) {
67 tst_res(TFAIL | TTERRNO, "lgetxattr() failed");
68 goto next;
69 }
70
71 if (TST_RET != strlen(VALUE2)) {
72 tst_res(TFAIL, "lgetxattr() got unexpected value size");
73 goto next;
74 }
75
76 if (!strncmp(buf, VALUE2, TST_RET))
77 tst_res(TPASS, "lgetxattr() got expected value");
78 else
79 tst_res(TFAIL, "lgetxattr() got unexpected value");
80
81 next:
82 TEST(lgetxattr("symlink", SECURITY_KEY1, buf, size));
83
84 if (TST_RET != -1) {
85 tst_res(TFAIL, "lgetxattr() succeeded unexpectedly");
86 return;
87 }
88
89 if (TST_ERR == ENODATA) {
90 tst_res(TPASS | TTERRNO, "lgetxattr() failed as expected");
91 } else {
92 tst_res(TFAIL | TTERRNO, "lgetxattr() failed unexpectedly, expected %s",
93 tst_strerrno(ENODATA));
94 }
95 }
96
97 static struct tst_test test = {
98 .needs_tmpdir = 1,
99 .needs_root = 1,
100 .test_all = verify_lgetxattr,
101 .setup = setup
102 };
103
104 #else
105 TST_TEST_TCONF("<sys/xattr.h> does not exist.");
106 #endif /* HAVE_SYS_XATTR_H */
107