1 /*
2 *
3 * Copyright (c) International Business Machines Corp., 2001
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
13 * the GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20 /*
21 * NAME
22 * fcntl18.c
23 *
24 * DESCRIPTION
25 * Test to check the error conditions in fcntl system call
26 *
27 * USAGE
28 * fcntl18
29 *
30 * HISTORY
31 * 07/2001 Ported by Wayne Boyer
32 *
33 * RESTRICTIONS
34 * NONE
35 */
36
37 #include <signal.h>
38 #include <errno.h>
39 #include <pwd.h>
40 #include <sys/types.h>
41 #include <sys/wait.h>
42 #include <sys/stat.h>
43 #include <sys/param.h>
44 #include <fcntl.h>
45 #include <unistd.h>
46 #include "test.h"
47
48 #define INVAL_FLAG -1
49 #define INVAL_MIN (-2147483647L-1L)
50
51 int fd;
52 char string[40] = "";
53
54 char *TCID = "fcntl18";
55 int TST_TOTAL = 1;
56 struct passwd *pass;
57
58 void setup(void);
59 void cleanup(void);
60 int fail;
61
main(int ac,char ** av)62 int main(int ac, char **av)
63 {
64 int retval;
65 struct flock fl;
66 int pid, status;
67
68 tst_parse_opts(ac, av, NULL, NULL);
69
70 setup(); /* global setup */
71
72 /* //block1: */
73 #ifndef UCLINUX
74 /* Skip since uClinux does not implement memory protection */
75 tst_resm(TINFO, "Enter block 1");
76 fail = 0;
77 if ((fd = open("temp.dat", O_CREAT | O_RDWR, 0777)) < 0) { //mode must be specified when O_CREATE is in the flag
78 tst_resm(TFAIL, "file opening error");
79 fail = 1;
80 }
81
82 /* Error condition if address is bad */
83 retval = fcntl(fd, F_GETLK, (struct flock *)INVAL_FLAG);
84 if (errno == EFAULT) {
85 tst_resm(TPASS, "Test F_GETLK: for errno EFAULT PASSED");
86 } else {
87 tst_resm(TFAIL, "Test F_GETLK: for errno EFAULT FAILED");
88 fail = 1;
89 }
90 if (fail) {
91 tst_resm(TINFO, "Block 1 FAILED");
92 } else {
93 tst_resm(TINFO, "Block 1 PASSED");
94 }
95 tst_resm(TINFO, "Exit block 1");
96 #else
97 tst_resm(TINFO, "Skip block 1 on uClinux");
98 #endif
99
100 /* //block2: */
101 #ifndef UCLINUX
102 /* Skip since uClinux does not implement memory protection */
103 tst_resm(TINFO, "Enter block 2");
104 fail = 0;
105 /* Error condition if address is bad */
106 retval = fcntl(fd, F_GETLK64, (struct flock *)INVAL_FLAG);
107 if (errno == EFAULT) {
108 tst_resm(TPASS, "Test F_GETLK64: for errno EFAULT PASSED");
109 } else {
110 tst_resm(TFAIL, "Test F_GETLK64: for errno EFAULT FAILED");
111 fail = 1;
112 }
113 if (fail) {
114 tst_resm(TINFO, "Block 2 FAILED");
115 } else {
116 tst_resm(TINFO, "Block 2 PASSED");
117 }
118 tst_resm(TINFO, "Exit block 2");
119 #else
120 tst_resm(TINFO, "Skip block 2 on uClinux");
121 #endif
122
123 /* //block3: */
124 tst_resm(TINFO, "Enter block 3");
125 fail = 0;
126 if ((pid = FORK_OR_VFORK()) == 0) { /* child */
127 fail = 0;
128 pass = getpwnam("nobody");
129 retval = setreuid(-1, pass->pw_uid);
130 if (retval < 0) {
131 tst_resm(TFAIL, "setreuid to user nobody failed, "
132 "errno: %d", errno);
133 fail = 1;
134 }
135
136 /* Error condition: invalid cmd */
137 retval = fcntl(fd, INVAL_FLAG, &fl);
138 if (errno == EINVAL) {
139 tst_resm(TPASS, "Test for errno EINVAL PASSED");
140 } else {
141 tst_resm(TFAIL, "Test for errno EINVAL FAILED, "
142 "got: %d", errno);
143 fail = 1;
144 }
145 exit(fail);
146 } else { /* parent */
147 waitpid(pid, &status, 0);
148 if (WEXITSTATUS(status) != 0) {
149 tst_resm(TFAIL, "child returned bad exit status");
150 fail = 1;
151 }
152 if (fail) {
153 tst_resm(TINFO, "Block 3 FAILED");
154 } else {
155 tst_resm(TINFO, "Block 3 PASSED");
156 }
157 }
158 tst_resm(TINFO, "Exit block 3");
159
160 cleanup();
161 tst_exit();
162
163 }
164
165 /*
166 * setup()
167 * performs all ONE TIME setup for this test
168 */
setup(void)169 void setup(void)
170 {
171
172 tst_sig(FORK, DEF_HANDLER, cleanup);
173
174 tst_require_root();
175
176 umask(0);
177
178 TEST_PAUSE;
179
180 tst_tmpdir();
181
182 sprintf(string, "./fcntl18.%d.1", getpid());
183 unlink(string);
184 }
185
186 /*
187 * cleanup()
188 * performs all the ONE TIME cleanup for this test at completion or
189 * or premature exit.
190 */
cleanup(void)191 void cleanup(void)
192 {
193 /*
194 * print timing status if that option was specified.
195 * print errno log if that option was specified
196 */
197 close(fd);
198
199 tst_rmdir();
200
201 unlink("temp.dat");
202
203 }
204