1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) International Business Machines Corp., 2001
*/
/*\
* [Description]
*
* Verify that, fchmod(2) will succeed to change the mode of a file/directory
* set the sticky bit on it if invoked by root (uid = 0) process with
* the following constraints:
*
* - the process is not the owner of the file/directory
* - the effective group ID or one of the supplementary group ID's of the
* process is equal to the group ID of the file/directory
*/
#include <pwd.h>
#include <grp.h>
#include <errno.h>
#include "tst_test.h"
#include "fchmod.h"
static int fd;
static void verify_fchmod(void)
{
struct stat stat_buf;
mode_t file_mode;
TEST(fchmod(fd, PERMS));
if (TST_RET == -1)
tst_res(TFAIL | TTERRNO, "fchmod() failed unexpectly");
SAFE_FSTAT(fd, &stat_buf);
file_mode = stat_buf.st_mode;
if ((file_mode & ~S_IFREG) != PERMS) {
tst_res(TFAIL, "%s: Incorrect modes 0%03o, Expected 0%03o",
TESTFILE, file_mode, PERMS);
} else {
tst_res(TPASS, "Functionality of fchmod(%d, %#o) Successful",
fd, PERMS);
}
}
static void setup(void)
{
struct passwd *ltpuser;
struct group *ltpgroup;
ltpuser = SAFE_GETPWNAM("nobody");
ltpgroup = SAFE_GETGRNAM_FALLBACK("users", "daemon");
fd = SAFE_OPEN(TESTFILE, O_RDWR | O_CREAT, FILE_MODE);
SAFE_CHOWN(TESTFILE, ltpuser->pw_uid, ltpgroup->gr_gid);
SAFE_SETGID(ltpgroup->gr_gid);
}
static void cleanup(void)
{
if (fd > 0)
SAFE_CLOSE(fd);
}
static struct tst_test test = {
.test_all = verify_fchmod,
.needs_root = 1,
.setup = setup,
.cleanup = cleanup,
.needs_tmpdir = 1,
};
|
