1 /*
2 * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of version 2 of the GNU General Public License as
6 * published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it would be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
11 *
12 * Further, this software is distributed without any warranty that it is
13 * free of the rightful claim of any third person regarding infringement
14 * or the like. Any license provided herein, whether implied or
15 * otherwise, applies only to this software file. Patent licenses, if
16 * any, provided herein do not apply to combinations of this program with
17 * other software, or any other product whatsoever.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, write the Free Software Foundation, Inc.,
21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 *
23 */
24
25 /*
26 * access(2) test for errno(s) EFAULT as root and nobody respectively.
27 */
28
29 #include <errno.h>
30 #include <unistd.h>
31 #include <sys/types.h>
32 #include <pwd.h>
33 #include "tst_test.h"
34
35 static uid_t uid;
36
37 static struct tcase {
38 void *addr;
39 int mode;
40 char *name;
41 } tcases[] = {
42 {(void *)-1, F_OK, "F_OK"},
43 {(void *)-1, R_OK, "R_OK"},
44 {(void *)-1, W_OK, "W_OK"},
45 {(void *)-1, X_OK, "X_OK"},
46 };
47
access_test(struct tcase * tc,const char * user)48 static void access_test(struct tcase *tc, const char *user)
49 {
50 TEST(access(tc->addr, tc->mode));
51
52 if (TEST_RETURN != -1) {
53 tst_res(TFAIL, "access(%p, %s) as %s succeeded unexpectedly",
54 tc->addr, tc->name, user);
55 return;
56 }
57
58 if (TEST_ERRNO != EFAULT) {
59 tst_res(TFAIL | TTERRNO,
60 "access(%p, %s) as %s should fail with EFAULT",
61 tc->addr, tc->name, user);
62 return;
63 }
64
65 tst_res(TPASS | TTERRNO, "access(%p, %s) as %s",
66 tc->addr, tc->name, user);
67 }
68
verify_access(unsigned int n)69 static void verify_access(unsigned int n)
70 {
71 struct tcase *tc = &tcases[n];
72 pid_t pid;
73
74 /* test as root */
75 access_test(tc, "root");
76
77 /* test as nobody */
78 pid = SAFE_FORK();
79 if (pid) {
80 SAFE_WAITPID(pid, NULL, 0);
81 } else {
82 SAFE_SETUID(uid);
83 access_test(tc, "nobody");
84 }
85 }
86
setup(void)87 static void setup(void)
88 {
89 struct passwd *pw;
90
91 pw = SAFE_GETPWNAM("nobody");
92
93 uid = pw->pw_uid;
94 }
95
96 static struct tst_test test = {
97 .tcnt = ARRAY_SIZE(tcases),
98 .needs_root = 1,
99 .forks_child = 1,
100 .setup = setup,
101 .test = verify_access,
102 };
103