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