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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
|
/* Test that reloading is disabled after a chroot.
Copyright (C) 2020-2025 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <nss.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <sys/types.h>
#include <errno.h>
#include <pwd.h>
#include <grp.h>
#include <unistd.h>
#include <netdb.h>
#include <support/support.h>
#include <support/check.h>
#include <support/xunistd.h>
#include "nss_test.h"
#ifndef PATH_MAX
# define PATH_MAX 1024
#endif
static struct passwd pwd_table1[] =
{
PWD_N (1234, "test1"),
PWD_N (4321, "test2"),
PWD_LAST ()
};
static const char *group_4[] = {
"alpha", "beta", "gamma", "fred", NULL
};
static struct group group_table_data1[] =
{
GRP (4),
GRP_LAST ()
};
void
_nss_test1_init_hook (test_tables *t)
{
t->pwd_table = pwd_table1;
t->grp_table = group_table_data1;
}
static struct passwd pwd_table2[] =
{
PWD_N (5, "test1"),
PWD_N (2468, "test2"),
PWD_LAST ()
};
static const char *group_5[] = {
"fred", NULL
};
static struct group group_table_data2[] =
{
GRP (5),
GRP_LAST ()
};
void
_nss_test2_init_hook (test_tables *t)
{
t->pwd_table = pwd_table2;
t->grp_table = group_table_data2;
}
static int
do_test (void)
{
struct passwd *pw;
struct group *gr;
struct hostent *he;
char buf1[PATH_MAX];
char buf2[PATH_MAX];
support_need_proc ("Our xmkdirp fails if we can't map our uid, which requires /proc.");
sprintf (buf1, "/subdir%s", support_slibdir_prefix);
xmkdirp (buf1, 0777);
/* Copy this DSO into the chroot so it *could* be loaded. */
sprintf (buf1, "%s/libnss_files.so.2", support_slibdir_prefix);
sprintf (buf2, "/subdir%s/libnss_files.so.2", support_slibdir_prefix);
support_copy_file (buf1, buf2);
/* Check we're using the "outer" nsswitch.conf. */
/* This uses the test1 DSO. */
pw = getpwnam ("test1");
TEST_VERIFY (pw != NULL);
if (pw)
TEST_COMPARE (pw->pw_uid, 1234);
/* This just loads the test2 DSO. */
gr = getgrgid (5);
TEST_VERIFY (gr != NULL);
/* Change the root dir. */
TEST_VERIFY (chroot ("/subdir") == 0);
xchdir ("/");
/* Check we're NOT using the "inner" nsswitch.conf. */
/* Both DSOs are loaded, which is used? */
pw = getpwnam ("test2");
TEST_VERIFY (pw != NULL);
if (pw)
TEST_VERIFY (pw->pw_uid != 2468);
/* We should still be using the old configuration. */
pw = getpwnam ("test1");
TEST_VERIFY (pw != NULL);
if (pw)
TEST_COMPARE (pw->pw_uid, 1234);
gr = getgrgid (5);
TEST_VERIFY (gr != NULL);
gr = getgrnam ("name4");
TEST_VERIFY (gr == NULL);
/* hosts in the outer nsswitch is files; the inner one is test1.
Verify that we're still using the outer nsswitch *and* that we
can load the files DSO. */
he = gethostbyname ("test2");
TEST_VERIFY (he != NULL);
return 0;
}
#include <support/test-driver.c>
|
