1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2016 Fujitsu Ltd.
4 * Author: Xiao Yang <yangx.jy@cn.fujitsu.com>
5 */
6
7 /*\
8 * [Description]
9 *
10 * Verify that llistxattr(2) call with zero size returns the current size of the
11 * list of extended attribute names, which can be used to determine the size of
12 * the buffer that should be supplied in a subsequent llistxattr(2) call.
13 */
14
15 #include "config.h"
16 #include <errno.h>
17 #include <sys/types.h>
18
19 #ifdef HAVE_SYS_XATTR_H
20 #include <sys/xattr.h>
21 #endif
22
23 #include "tst_test.h"
24
25 #ifdef HAVE_SYS_XATTR_H
26
27 #define SECURITY_KEY "security.ltptest"
28 #define VALUE "test"
29 #define VALUE_SIZE (sizeof(VALUE) - 1)
30
31 static const char *filename[] = {"testfile1", "testfile2"};
32
check_suitable_buf(const char * name,long size)33 static int check_suitable_buf(const char *name, long size)
34 {
35 int n;
36 char buf[size];
37
38 n = llistxattr(name, buf, sizeof(buf));
39
40 return n != -1;
41 }
42
verify_llistxattr(unsigned int n)43 static void verify_llistxattr(unsigned int n)
44 {
45 const char *name = filename[n];
46
47 TEST(llistxattr(name, NULL, 0));
48 if (TST_RET == -1) {
49 tst_res(TFAIL | TTERRNO, "llistxattr() failed");
50 return;
51 }
52
53 if (check_suitable_buf(name, TST_RET))
54 tst_res(TPASS, "llistxattr() succeed with suitable buffer");
55 else
56 tst_res(TFAIL, "llistxattr() failed with small buffer");
57 }
58
setup(void)59 static void setup(void)
60 {
61 SAFE_TOUCH(filename[0], 0644, NULL);
62
63 SAFE_TOUCH(filename[1], 0644, NULL);
64
65 SAFE_LSETXATTR(filename[1], SECURITY_KEY, VALUE, VALUE_SIZE, XATTR_CREATE);
66 }
67
68 static struct tst_test test = {
69 .needs_tmpdir = 1,
70 .needs_root = 1,
71 .test = verify_llistxattr,
72 .tcnt = ARRAY_SIZE(filename),
73 .setup = setup,
74 };
75
76 #else /* HAVE_SYS_XATTR_H */
77 TST_TEST_TCONF("<sys/xattr.h> does not exist.");
78 #endif
79