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 * open07.c
23 *
24 * DESCRIPTION
25 * Test the open(2) system call to ensure that it sets ELOOP correctly.
26 *
27 * CALLS
28 * open()
29 *
30 * ALGORITHM
31 * 1. Create a symbolic link to a file, and call open(O_NOFOLLOW). Check
32 * that it returns ELOOP.
33 *
34 * 2. Create a symbolic link to a directory, and call open(O_NOFOLLOW).
35 * Check that it returns ELOOP.
36 *
37 * 3. Create a symbolic link to a symbolic link, and call open(O_NOFOLLOW).
38 * Check that it returns ELOOP.
39 *
40 * 4. Create a symbolic link to a symbolically linked directory, and call
41 * open(O_NOFOLLOW). Check that it returns ELOOP.
42 *
43 * 5. Create a symbolic link to a directory, and call
44 * open("link/", O_NOFOLLOW). Check that it succeeds.
45 *
46 * USAGE: <for command-line>
47 * open07 [-c n] [-e] [-i n] [-I x] [-P x] [-t]
48 * where, -c n : Run n copies concurrently.
49 * -e : Turn on errno logging.
50 * -i n : Execute test n times.
51 * -I x : Execute test for x seconds.
52 * -P x : Pause for x seconds between iterations.
53 * -t : Turn on syscall timing.
54 *
55 * HISTORY
56 * 07/2001 Ported by Wayne Boyer
57 *
58 * RESTRICTIONS
59 * None
60 */
61 #define _GNU_SOURCE /* for O_NOFOLLOW */
62 #include <stdio.h>
63 #include <errno.h>
64 #include <sys/types.h>
65 #include <sys/stat.h>
66 #include <fcntl.h>
67 #include "test.h"
68
69 static void setup(void);
70 static void cleanup(void);
71 static void setupfunc_test1();
72 static void setupfunc_test2();
73 static void setupfunc_test3();
74 static void setupfunc_test4();
75 static void setupfunc_test5();
76
77 char *TCID = "open07";
78 int TST_TOTAL = 5;
79
80 static int fd1, fd2;
81
82 static struct test_case_t {
83 char *desc;
84 char filename[100];
85 int flags;
86 int mode;
87 void (*setupfunc) ();
88 int exp_errno;
89 } TC[] = {
90 {"Test for ELOOP on f2: f1 -> f2", {},
91 O_NOFOLLOW, 00700, setupfunc_test1, ELOOP},
92 {"Test for ELOOP on d2: d1 -> d2", {},
93 O_NOFOLLOW, 00700, setupfunc_test2, ELOOP},
94 {"Test for ELOOP on f3: f1 -> f2 -> f3", {},
95 O_NOFOLLOW, 00700, setupfunc_test3, ELOOP},
96 {"Test for ELOOP on d3: d1 -> d2 -> d3", {},
97 O_NOFOLLOW, 00700, setupfunc_test4, ELOOP},
98 {"Test for success on d2: d1 -> d2", {},
99 O_NOFOLLOW, 00700, setupfunc_test5, 0},
100 {NULL, {}, 0, 0, NULL, 0}
101 };
102
main(int ac,char ** av)103 int main(int ac, char **av)
104 {
105 int lc;
106 int i;
107
108 tst_parse_opts(ac, av, NULL, NULL);
109
110 setup();
111
112 /* run the setup routines for the individual tests */
113 for (i = 0; i < TST_TOTAL; i++) {
114 if (TC[i].setupfunc != NULL)
115 TC[i].setupfunc();
116 }
117
118 for (lc = 0; TEST_LOOPING(lc); lc++) {
119 tst_count = 0;
120
121 for (i = 0; TC[i].desc != NULL; ++i) {
122 TEST(open(TC[i].filename, TC[i].flags, TC[i].mode));
123
124 if (TC[i].exp_errno != 0) {
125 if (TEST_RETURN != -1) {
126 tst_resm(TFAIL, "open succeeded "
127 "unexpectedly");
128 }
129
130 if (TEST_ERRNO != TC[i].exp_errno) {
131 tst_resm(TFAIL, "open returned "
132 "unexpected errno, expected: "
133 "%d, got: %d",
134 TC[i].exp_errno, TEST_ERRNO);
135 } else {
136 tst_resm(TPASS, "open returned "
137 "expected ELOOP error");
138 }
139 } else {
140 if (TEST_RETURN == -1) {
141 tst_resm(TFAIL, "open failed "
142 "unexpectedly with errno %d",
143 TEST_ERRNO);
144 } else {
145 tst_resm(TPASS, "open succeeded as "
146 "expected");
147 }
148 }
149
150 if (TEST_RETURN != -1)
151 close(TEST_RETURN);
152 }
153 }
154
155 cleanup();
156 tst_exit();
157 }
158
setupfunc_test1(void)159 static void setupfunc_test1(void)
160 {
161 char file1[100], file2[100];
162
163 sprintf(file1, "open03.1.%d", getpid());
164 sprintf(file2, "open03.2.%d", getpid());
165 fd1 = creat(file1, 00700);
166 if (fd1 < 0)
167 tst_brkm(TBROK, cleanup, "creat(2) failed: errno: %d", errno);
168
169 if (symlink(file1, file2) < 0)
170 tst_brkm(TBROK, cleanup, "symlink(2) failed: errno: %d", errno);
171
172 strcpy(TC[0].filename, file2);
173 }
174
setupfunc_test2(void)175 static void setupfunc_test2(void)
176 {
177 char file1[100], file2[100];
178
179 sprintf(file1, "open03.3.%d", getpid());
180 sprintf(file2, "open03.4.%d", getpid());
181 if (mkdir(file1, 00700) < 0)
182 tst_brkm(TBROK, cleanup, "mkdir(2) failed: errno: %d", errno);
183
184 if (symlink(file1, file2) < 0)
185 tst_brkm(TBROK, cleanup, "symlink(2) failed: errno: %d", errno);
186
187 strcpy(TC[1].filename, file2);
188 }
189
setupfunc_test3(void)190 static void setupfunc_test3(void)
191 {
192 char file1[100], file2[100], file3[100];
193
194 sprintf(file1, "open03.5.%d", getpid());
195 sprintf(file2, "open03.6.%d", getpid());
196 sprintf(file3, "open03.7.%d", getpid());
197 fd2 = creat(file1, 00700);
198 if (fd2 < 0)
199 tst_brkm(TBROK, cleanup, "creat(2) failed: errno: %d", errno);
200
201 if (symlink(file1, file2) < 0)
202 tst_brkm(TBROK, cleanup, "symlink(2) failed: errno: %d", errno);
203
204 if (symlink(file2, file3) < 0)
205 tst_brkm(TBROK, cleanup, "symlink(2) failed: errno: %d", errno);
206
207 strcpy(TC[2].filename, file3);
208 }
209
setupfunc_test4(void)210 static void setupfunc_test4(void)
211 {
212 char file1[100], file2[100], file3[100];
213
214 sprintf(file1, "open03.8.%d", getpid());
215 sprintf(file2, "open03.9.%d", getpid());
216 sprintf(file3, "open03.10.%d", getpid());
217 if (mkdir(file1, 00700) < 0)
218 tst_brkm(TBROK, cleanup, "mkdir(2) failed: errno: %d", errno);
219
220 if (symlink(file1, file2) < 0)
221 tst_brkm(TBROK, cleanup, "symlink(2) failed: errno: %d", errno);
222
223 if (symlink(file2, file3) < 0)
224 tst_brkm(TBROK, cleanup, "symlink(2) failed: errno: %d", errno);
225
226 strcpy(TC[3].filename, file3);
227 }
228
setupfunc_test5(void)229 static void setupfunc_test5(void)
230 {
231 char file1[100], file2[100];
232
233 sprintf(file1, "open11.3.%d", getpid());
234 sprintf(file2, "open12.4.%d", getpid());
235 if (mkdir(file1, 00700) < 0)
236 tst_brkm(TBROK, cleanup, "mkdir(2) failed: errno: %d", errno);
237
238 if (symlink(file1, file2) < 0)
239 tst_brkm(TBROK, cleanup, "symlink(2) failed: errno: %d", errno);
240
241 strcpy(TC[4].filename, file2);
242 strcat(TC[4].filename, "/");
243 }
244
setup(void)245 static void setup(void)
246 {
247 umask(0);
248
249 tst_sig(NOFORK, DEF_HANDLER, cleanup);
250
251 TEST_PAUSE;
252
253 tst_tmpdir();
254 }
255
cleanup(void)256 static void cleanup(void)
257 {
258 close(fd1);
259 close(fd2);
260
261 tst_rmdir();
262 }
263