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[glibc.git] / posix / tst-spawn.c
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1 /* Tests for spawn.
2 Copyright (C) 2000 Free Software Foundation, Inc.
3 Contributed by Ulrich Drepper <drepper@cygnus.com>, 2000.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library 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 the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #include <errno.h>
21 #include <error.h>
22 #include <fcntl.h>
23 #include <spawn.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <unistd.h>
27 #include <wait.h>
28 #include <sys/param.h>
31 /* Nonzero if the program gets called via `exec'. */
32 static int restart;
35 #define CMDLINE_OPTIONS \
36 { "restart", no_argument, &restart, 1 },
38 /* Prototype for our test function. */
39 extern void do_prepare (int argc, char *argv[]);
40 extern int do_test (int argc, char *argv[]);
42 /* We have a preparation function. */
43 #define PREPARE do_prepare
45 #include "../test-skeleton.c"
48 /* Name of the temporary files. */
49 static char *name1;
50 static char *name2;
51 static char *name3;
53 /* The contents of our files. */
54 static const char fd1string[] = "This file should get closed";
55 static const char fd2string[] = "This file should stay opened";
56 static const char fd3string[] = "This file will be opened";
59 /* We have a preparation function. */
60 void
61 do_prepare (int argc, char *argv[])
63 char name_len;
65 name_len = strlen (test_dir);
66 name1 = (char *) malloc (name_len + sizeof ("/spawnXXXXXX"));
67 mempcpy (mempcpy (name1, test_dir, name_len),
68 "/spawnXXXXXX", sizeof ("/spawnXXXXXX"));
69 add_temp_file (name1);
71 name2 = (char *) malloc (name_len + sizeof ("/spawnXXXXXX"));
72 mempcpy (mempcpy (name2, test_dir, name_len),
73 "/spawnXXXXXX", sizeof ("/spawnXXXXXX"));
74 add_temp_file (name2);
76 name3 = (char *) malloc (name_len + sizeof ("/spawnXXXXXX"));
77 mempcpy (mempcpy (name3, test_dir, name_len),
78 "/spawnXXXXXX", sizeof ("/spawnXXXXXX"));
79 add_temp_file (name3);
83 static int
84 handle_restart (const char *fd1s, const char *fd2s, const char *fd3s,
85 const char *fd4s, const char *name)
87 char buf[100];
88 int fd1;
89 int fd2;
90 int fd3;
91 int fd4;
93 /* First get the descriptors. */
94 fd1 = atol (fd1s);
95 fd2 = atol (fd2s);
96 fd3 = atol (fd3s);
97 fd4 = atol (fd4s);
99 /* Sanity check. */
100 if (fd1 == fd2)
101 error (EXIT_FAILURE, 0, "value of fd1 and fd2 is the same");
102 if (fd1 == fd3)
103 error (EXIT_FAILURE, 0, "value of fd1 and fd3 is the same");
104 if (fd1 == fd4)
105 error (EXIT_FAILURE, 0, "value of fd1 and fd4 is the same");
106 if (fd2 == fd3)
107 error (EXIT_FAILURE, 0, "value of fd2 and fd3 is the same");
108 if (fd2 == fd4)
109 error (EXIT_FAILURE, 0, "value of fd2 and fd4 is the same");
110 if (fd3 == fd4)
111 error (EXIT_FAILURE, 0, "value of fd3 and fd4 is the same");
113 /* First the easy part: read from the file descriptor which is
114 supposed to be open. */
115 if (lseek (fd2, 0, SEEK_CUR) != strlen (fd2string))
116 error (EXIT_FAILURE, errno, "file 2 not in right position");
117 /* The duped descriptor must have the same position. */
118 if (lseek (fd4, 0, SEEK_CUR) != strlen (fd2string))
119 error (EXIT_FAILURE, errno, "file 4 not in right position");
120 if (lseek (fd2, 0, SEEK_SET) != 0)
121 error (EXIT_FAILURE, 0, "cannot reset position in file 2");
122 if (lseek (fd4, 0, SEEK_CUR) != 0)
123 error (EXIT_FAILURE, errno, "file 4 not set back, too");
124 if (read (fd2, buf, sizeof buf) != strlen (fd2string))
125 error (EXIT_FAILURE, 0, "cannot read file 2");
126 if (memcmp (fd2string, buf, strlen (fd2string)) != 0)
127 error (EXIT_FAILURE, 0, "file 2 does not match");
129 /* Now read from the third file. */
130 if (read (fd3, buf, sizeof buf) != strlen (fd3string))
131 error (EXIT_FAILURE, 0, "cannot read file 3");
132 if (memcmp (fd3string, buf, strlen (fd3string)) != 0)
133 error (EXIT_FAILURE, 0, "file 3 does not match");
134 /* Try to write to the file. This should not be allowed. */
135 if (write (fd3, "boo!", 4) != -1 || errno != EBADF)
136 error (EXIT_FAILURE, 0, "file 3 is writable");
138 /* Now try to read the first file. First make sure it is not opened. */
139 if (lseek (fd1, 0, SEEK_CUR) != (off_t) -1 || errno != EBADF)
140 error (EXIT_FAILURE, 0, "file 1 (%d) is not closed", fd1);
142 /* Now open the file and read it. */
143 fd1 = open (name, O_RDONLY);
144 if (fd1 == -1)
145 error (EXIT_FAILURE, errno,
146 "cannot open first file \"%s\" for verification", name);
148 if (read (fd1, buf, sizeof buf) != strlen (fd1string))
149 error (EXIT_FAILURE, errno, "cannot read file 1");
150 if (memcmp (fd1string, buf, strlen (fd1string)) != 0)
151 error (EXIT_FAILURE, 0, "file 1 does not match");
153 return 0;
158 do_test (int argc, char *argv[])
160 pid_t pid;
161 int fd1;
162 int fd2;
163 int fd3;
164 int fd4;
165 int status;
166 posix_spawn_file_actions_t actions;
167 char fd1name[18];
168 char fd2name[18];
169 char fd3name[18];
170 char fd4name[18];
171 char *spargv[12];
173 /* We must have
174 - four parameters left of called initially
175 + path for ld.so
176 + "--library-path"
177 + the library path
178 + the application name
179 - five parameters left if called through re-execution
180 + file descriptor number which is supposed to be closed
181 + the open file descriptor
182 + the newly opened file descriptor
183 + thhe duped second descriptor
184 + the name of the closed descriptor
186 if (argc != (restart ? 6 : 5))
187 error (EXIT_FAILURE, 0, "wrong number of arguments (%d)", argc);
189 if (restart)
190 return handle_restart (argv[1], argv[2], argv[3], argv[4], argv[5]);
192 /* Prepare the test. We are creating two files: one which file descriptor
193 will be marked with FD_CLOEXEC, another which is not. */
195 /* Open our test files. */
196 fd1 = mkstemp (name1);
197 if (fd1 == -1)
198 error (EXIT_FAILURE, errno, "cannot open test file `%s'", name1);
199 fd2 = mkstemp (name2);
200 if (fd2 == -1)
201 error (EXIT_FAILURE, errno, "cannot open test file `%s'", name2);
202 fd3 = mkstemp (name3);
203 if (fd3 == -1)
204 error (EXIT_FAILURE, errno, "cannot open test file `%s'", name3);
206 /* Write something in the files. */
207 if (write (fd1, fd1string, strlen (fd1string)) != strlen (fd1string))
208 error (EXIT_FAILURE, errno, "cannot write to first file");
209 if (write (fd2, fd2string, strlen (fd2string)) != strlen (fd2string))
210 error (EXIT_FAILURE, errno, "cannot write to second file");
211 if (write (fd3, fd3string, strlen (fd3string)) != strlen (fd3string))
212 error (EXIT_FAILURE, errno, "cannot write to third file");
214 /* Close the third file. It'll be opened by `spawn'. */
215 close (fd3);
217 /* Tell `spawn' what to do. */
218 if (posix_spawn_file_actions_init (&actions) != 0)
219 error (EXIT_FAILURE, errno, "posix_spawn_file_actions_init");
220 /* Close `fd1'. */
221 if (posix_spawn_file_actions_addclose (&actions, fd1) != 0)
222 error (EXIT_FAILURE, errno, "posix_spawn_file_actions_addclose");
223 /* We want to open the third file. */
224 if (posix_spawn_file_actions_addopen (&actions, fd3, name3,
225 O_RDONLY, 0666) != 0)
226 error (EXIT_FAILURE, errno, "posix_spawn_file_actions_addopen");
227 /* We dup the second descriptor. */
228 fd4 = MAX (2, MAX (fd1, MAX (fd2, fd3))) + 1;
229 if (posix_spawn_file_actions_adddup2 (&actions, fd2, fd4) != 0)
230 error (EXIT_FAILURE, errno, "posix_spawn_file_actions_adddup2");
232 /* Now spawn the process. */
233 snprintf (fd1name, sizeof fd1name, "%d", fd1);
234 snprintf (fd2name, sizeof fd2name, "%d", fd2);
235 snprintf (fd3name, sizeof fd3name, "%d", fd3);
236 snprintf (fd4name, sizeof fd4name, "%d", fd4);
238 spargv[0] = argv[1];
239 spargv[1] = argv[2];
240 spargv[2] = argv[3];
241 spargv[3] = argv[4];
242 spargv[4] = (char *) "--direct";
243 spargv[5] = (char *) "--restart";
244 spargv[6] = fd1name;
245 spargv[7] = fd2name;
246 spargv[8] = fd3name;
247 spargv[9] = fd4name;
248 spargv[10] = name1;
249 spargv[11] = NULL;
251 if (posix_spawn (&pid, argv[1], &actions, NULL, spargv, environ) != 0)
252 error (EXIT_FAILURE, errno, "posix_spawn");
254 /* Cleanup. */
255 if (posix_spawn_file_actions_destroy (&actions) != 0)
256 error (EXIT_FAILURE, errno, "posix_spawn_file_actions_destroy");
258 /* Wait for the child. */
259 if (waitpid (pid, &status, 0) != pid)
260 error (EXIT_FAILURE, errno, "wrong child");
262 if (WTERMSIG (status) != 0)
263 error (EXIT_FAILURE, 0, "Child terminated incorrectly");
264 status = WEXITSTATUS (status);
266 /* Remove the test files. */
267 unlink (name1);
268 unlink (name2);
269 unlink (name3);
271 return status;