1 /******************************************************************************/
2 /* Copyright (c) Crackerjack Project., 2007 */
3 /* */
4 /* This program is free software; you can redistribute it and/or modify */
5 /* it under the terms of the GNU General Public License as published by */
6 /* the Free Software Foundation; either version 2 of the License, or */
7 /* (at your option) any later version. */
8 /* */
9 /* This program is distributed in the hope that it will be useful, */
10 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */
11 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */
12 /* the GNU General Public License for more details. */
13 /* */
14 /* You should have received a copy of the GNU General Public License */
15 /* along with this program; if not, write to the Free Software */
16 /* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
17 /* */
18 /******************************************************************************/
19 /******************************************************************************/
20 /* */
21 /* File: unshare02.c */
22 /* */
23 /* Description: This tests the unshare error() syscall */
24 /* */
25 /* Usage: <for command-line> */
26 /* unshare02 [-c n] [-e][-i n] [-I x] [-p x] [-t] */
27 /* where, -c n : Run n copies concurrently. */
28 /* -e : Turn on errno logging. */
29 /* -i n : Execute test n times. */
30 /* -I x : Execute test for x seconds. */
31 /* -P x : Pause for x seconds between iterations. */
32 /* -t : Turn on syscall timing. */
33 /* */
34 /* Total Tests: 2 */
35 /* */
36 /* Test Name: unshare02 */
37 /* History: Porting from Crackerjack to LTP is done by */
38 /* Manas Kumar Nayak maknayak@in.ibm.com> */
39 /******************************************************************************/
40
41 #define _GNU_SOURCE
42
43 #include <stdio.h>
44 #include <sys/wait.h>
45 #include <sys/types.h>
46 #include <sched.h>
47 #include <limits.h>
48 #include <unistd.h>
49 #include <sys/types.h>
50 #include <sys/syscall.h>
51 #include <errno.h>
52 #include <pwd.h>
53 #include <grp.h>
54 #include <string.h>
55 #include <sys/param.h>
56 #include <stdio.h>
57
58 #include "test.h"
59 #include "safe_macros.h"
60 #include "config.h"
61
62 char *TCID = "unshare02";
63 int testno;
64 int TST_TOTAL = 2;
65
66 #ifdef HAVE_UNSHARE
67
68 /* Extern Global Functions */
69 /******************************************************************************/
70 /* */
71 /* Function: cleanup */
72 /* */
73 /* Description: Performs all one time clean up for this test on successful */
74 /* completion, premature exit or failure. Closes all temporary */
75 /* files, removes all temporary directories exits the test with */
76 /* appropriate TEST_RETURNurn code by calling tst_exit() function. */
77 /* */
78 /* Input: None. */
79 /* */
80 /* Output: None. */
81 /* */
82 /* Return: On failure - Exits calling tst_exit(). Non '0' TEST_RETURNurn code. */
83 /* On success - Exits calling tst_exit(). With '0' TEST_RETURNurn code. */
84 /* */
85 /******************************************************************************/
cleanup(void)86 void cleanup(void)
87 {
88
89 tst_rmdir();
90
91 /* Exit with appropriate TEST_RETURNurn code. */
92
93 }
94
95 /* Local Functions */
96 /******************************************************************************/
97 /* */
98 /* Function: setup */
99 /* */
100 /* Description: Performs all one time setup for this test. This function is */
101 /* typically used to capture signals, create temporary dirs */
102 /* and temporary files that may be used in the course of this */
103 /* test. */
104 /* */
105 /* Input: None. */
106 /* */
107 /* Output: None. */
108 /* */
109 /* Return: On failure - Exits by calling cleanup(). */
110 /* On success - TEST_RETURNurns 0. */
111 /* */
112 /******************************************************************************/
setup(void)113 void setup(void)
114 {
115 /* Capture signals if any */
116 /* Create temporary directories */
117 TEST_PAUSE;
118 tst_tmpdir();
119 }
120
main(int ac,char ** av)121 int main(int ac, char **av)
122 {
123 pid_t pid1;
124 int lc;
125 int rval;
126
127 tst_parse_opts(ac, av, NULL, NULL);
128
129 setup();
130
131 for (lc = 0; TEST_LOOPING(lc); ++lc) {
132 tst_count = 0;
133 for (testno = 0; testno < TST_TOTAL; ++testno) {
134
135 TEST(pid1 = fork()); //call to fork()
136 if (TEST_RETURN == -1) {
137 tst_brkm(TFAIL | TTERRNO, cleanup,
138 "fork() failed.");
139 } else if (TEST_RETURN == 0) {
140 TEST_RETURN = unshare(-1);
141 if (TEST_RETURN == 0) {
142 printf("Call unexpectedly succeeded\n");
143 rval = 1;
144 } else if (TEST_RETURN == -1) {
145 if (errno == EINVAL) {
146 printf("Got EINVAL\n");
147 rval = 0;
148 } else if (errno == ENOSYS) {
149 rval = 1;
150 } else {
151 perror("unshare failed");
152 rval = 2;
153 }
154 }
155 exit(rval);
156 } else {
157 SAFE_WAIT(cleanup, &rval);
158 if (rval != 0 && WIFEXITED(rval)) {
159 switch (WEXITSTATUS(rval)) {
160 case 1:
161 tst_brkm(TBROK, cleanup,
162 "unshare call unsupported "
163 "in kernel");
164 break;
165 case 2:
166 tst_brkm(TFAIL, cleanup,
167 "unshare call failed");
168 break;
169 }
170 }
171 }
172
173 TEST(pid1 = fork()); //call to fork()
174 if (pid1 == -1) {
175 tst_brkm(TFAIL | TTERRNO, cleanup,
176 "fork() failed.");
177 } else if (TEST_RETURN == 0) {
178 TEST_RETURN = unshare(0);
179 if (TEST_RETURN == 0) {
180 tst_resm(TPASS, "Call succeeded");
181 rval = 0;
182 } else if (TEST_RETURN == -1) {
183 if (errno == ENOSYS)
184 rval = 1;
185 else {
186 perror("unshare failed");
187 rval = 2;
188 }
189 }
190 exit(rval);
191 } else {
192 SAFE_WAIT(cleanup, &rval);
193 if (rval != 0 && WIFEXITED(rval)) {
194 switch (WEXITSTATUS(rval)) {
195 case 1:
196 tst_brkm(TBROK, cleanup,
197 "unshare call unsupported "
198 "in kernel");
199 break;
200 case 2:
201 tst_brkm(TFAIL, cleanup,
202 "unshare call failed");
203 break;
204 }
205 }
206 }
207
208 }
209 }
210 cleanup();
211 tst_exit();
212 }
213 #else
main(void)214 int main(void)
215 {
216 tst_brkm(TCONF, NULL, "unshare is undefined.");
217 }
218 #endif
219