1 /* Skeleton for test programs.
2 Copyright (C) 1998,2000-2004, 2005 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <http://www.gnu.org/licenses/>. */
29 #include <sys/resource.h>
31 #include <sys/param.h>
35 /* The test function is normally called `do_test' and it is called
36 with argc and argv as the arguments. We nevertheless provide the
37 possibility to overwrite this name. */
39 # define TEST_FUNCTION do_test (argc, argv)
42 #ifndef TEST_DATA_LIMIT
43 # define TEST_DATA_LIMIT (64 << 20) /* Data limit (bytes) to run with. */
46 #define OPT_DIRECT 1000
47 #define OPT_TESTDIR 1001
49 static struct option options[] =
51 #ifdef CMDLINE_OPTIONS
54 { "direct", no_argument, NULL, OPT_DIRECT },
55 { "test-dir", required_argument, NULL, OPT_TESTDIR },
59 /* PID of the test itself. */
62 /* Directory to place temporary files in. */
63 static const char *test_dir;
65 /* List of temporary files. */
72 /* Add temporary files in list. */
74 __attribute__ ((unused))
75 add_temp_file (const char *name)
77 struct temp_name_list *newp
78 = (struct temp_name_list *) calloc (sizeof (*newp), 1);
82 if (temp_name_list == NULL)
83 temp_name_list = (struct temp_name_list *) &newp->q;
85 insque (newp, temp_name_list);
89 /* Delete all temporary files. */
91 delete_temp_files (void)
93 while (temp_name_list != NULL)
95 remove (temp_name_list->name);
96 temp_name_list = (struct temp_name_list *) temp_name_list->q.q_forw;
100 /* Create a temporary file. */
102 __attribute__ ((unused))
103 create_temp_file (const char *base, char **filename)
108 fname = (char *) malloc (strlen (test_dir) + 1 + strlen (base)
109 + sizeof ("XXXXXX"));
112 puts ("out of memory");
115 strcpy (stpcpy (stpcpy (stpcpy (fname, test_dir), "/"), base), "XXXXXX");
117 fd = mkstemp (fname);
120 printf ("cannot open temporary file '%s': %s\n", fname, strerror(errno));
125 add_temp_file (fname);
126 if (filename != NULL)
132 /* Timeout handler. We kill the child and exit with an error. */
134 __attribute__ ((noreturn))
135 timeout_handler (int sig __attribute__ ((unused)))
144 /* Wait for it to terminate. */
145 for (i = 0; i < 5; ++i)
148 killed = waitpid (pid, &status, WNOHANG|WUNTRACED);
152 /* Delay, give the system time to process the kill. If the
153 nanosleep() call return prematurely, all the better. We
154 won't restart it since this probably means the child process
157 ts.tv_nsec = 100000000;
158 nanosleep (&ts, NULL);
160 if (killed != 0 && killed != pid)
162 perror ("Failed to kill test process");
166 #ifdef CLEANUP_HANDLER
170 /* If we expected this signal: good! */
171 #ifdef EXPECTED_SIGNAL
172 if (EXPECTED_SIGNAL == SIGALRM)
176 if (killed == 0 || (WIFSIGNALED (status) && WTERMSIG (status) == SIGKILL))
177 fputs ("Timed out: killed the child process\n", stderr);
178 else if (WIFSTOPPED (status))
179 fprintf (stderr, "Timed out: the child process was %s\n",
180 strsignal (WSTOPSIG (status)));
181 else if (WIFSIGNALED (status))
182 fprintf (stderr, "Timed out: the child process got signal %s\n",
183 strsignal (WTERMSIG (status)));
185 fprintf (stderr, "Timed out: killed the child process but it exited %d\n",
186 WEXITSTATUS (status));
188 /* Exit with an error. */
193 __attribute__ ((noreturn))
194 handler_killpid(int sig)
196 kill(pid, SIGKILL); /* kill test */
197 signal(sig, SIG_DFL);
198 raise(sig); /* kill ourself */
199 _exit(128 + sig); /* paranoia */
202 /* We provide the entry point here. */
204 main (int argc, char *argv[])
206 #ifdef __ARCH_USE_MMU__
207 int direct = 0; /* Directly call the test function? */
213 unsigned int timeoutfactor = 1;
215 char *envstr_timeoutfactor;
217 /* Make uses of freed and uninitialized memory known. */
218 #ifdef __MALLOC_STANDARD__
220 # define M_PERTURB -6
222 mallopt (M_PERTURB, 42);
225 #ifdef STDOUT_UNBUFFERED
226 setbuf (stdout, NULL);
229 while ((opt = getopt_long (argc, argv, "+", options, NULL)) != -1)
240 #ifdef CMDLINE_PROCESS
245 /* If set, read the test TIMEOUTFACTOR value from the environment.
246 This value is used to scale the default test timeout values. */
247 envstr_timeoutfactor = getenv ("TIMEOUTFACTOR");
248 if (envstr_timeoutfactor != NULL)
250 char *envstr_conv = envstr_timeoutfactor;
251 unsigned long int env_fact;
253 env_fact = strtoul (envstr_timeoutfactor, &envstr_conv, 0);
254 if (*envstr_conv == '\0' && envstr_conv != envstr_timeoutfactor)
255 timeoutfactor = MAX (env_fact, 1);
258 /* Set TMPDIR to specified test directory. */
259 if (test_dir != NULL)
261 setenv ("TMPDIR", test_dir, 1);
263 if (chdir (test_dir) < 0)
271 test_dir = getenv ("TMPDIR");
272 if (test_dir == NULL || test_dir[0] == '\0')
276 /* Make sure we see all message, even those on stdout. */
277 setvbuf (stdout, NULL, _IONBF, 0);
279 /* make sure temporary files are deleted. */
280 atexit (delete_temp_files);
282 /* Correct for the possible parameters. */
283 argv[optind - 1] = argv[0];
287 /* Call the initializing function, if one is available. */
289 PREPARE (argc, argv);
292 /* If we are not expected to fork run the function immediately. */
294 return TEST_FUNCTION;
296 /* Set up the test environment:
299 - fork and execute the function. */
301 #if defined __ARCH_USE_MMU__ || ! defined __UCLIBC__
305 /* This is the child. */
307 struct rlimit data_limit;
310 /* Try to avoid dumping core. */
311 struct rlimit core_limit;
312 core_limit.rlim_cur = 0;
313 core_limit.rlim_max = 0;
314 setrlimit (RLIMIT_CORE, &core_limit);
318 /* Try to avoid eating all memory if a test leaks. */
319 if (getrlimit (RLIMIT_DATA, &data_limit) == 0)
321 if (TEST_DATA_LIMIT == RLIM_INFINITY)
322 data_limit.rlim_cur = data_limit.rlim_max;
323 else if (data_limit.rlim_cur > (rlim_t) TEST_DATA_LIMIT)
324 data_limit.rlim_cur = MIN ((rlim_t) TEST_DATA_LIMIT,
325 data_limit.rlim_max);
326 if (setrlimit (RLIMIT_DATA, &data_limit) < 0)
327 perror ("setrlimit: RLIMIT_DATA");
330 perror ("getrlimit: RLIMIT_DATA");
333 /* We put the test process in its own pgrp so that if it bogusly
334 generates any job control signals, they won't hit the whole build. */
337 /* Execute the test function and exit with the return value. */
338 exit (TEST_FUNCTION);
343 perror ("Cannot fork test program");
347 signal (SIGTERM, handler_killpid);
348 signal (SIGINT, handler_killpid);
349 signal (SIGQUIT, handler_killpid);
353 /* Default timeout is two seconds. */
356 signal (SIGALRM, timeout_handler);
357 alarm (TIMEOUT * timeoutfactor);
359 /* Wait for the regular termination. */
360 termpid = TEMP_FAILURE_RETRY (waitpid (pid, &status, 0));
363 printf ("Waiting for test program failed: %s\n", strerror(errno));
368 printf ("Oops, wrong test program terminated: expected %ld, got %ld\n",
369 (long int) pid, (long int) termpid);
373 #ifndef EXPECTED_SIGNAL
374 /* We don't expect any signal. */
375 # define EXPECTED_SIGNAL 0
377 if (WTERMSIG (status) != EXPECTED_SIGNAL)
379 if (EXPECTED_SIGNAL != 0)
381 if (WTERMSIG (status) == 0)
383 "Expected signal '%s' from child, got none\n",
384 strsignal (EXPECTED_SIGNAL));
387 "Incorrect signal from child: got `%s', need `%s'\n",
388 strsignal (WTERMSIG (status)),
389 strsignal (EXPECTED_SIGNAL));
392 fprintf (stderr, "Didn't expect signal from child: got `%s'\n",
393 strsignal (WTERMSIG (status)));
397 /* Simply exit with the return value of the test. */
398 #ifndef EXPECTED_STATUS
399 return WEXITSTATUS (status);
401 if (WEXITSTATUS (status) != EXPECTED_STATUS)
403 fprintf (stderr, "Expected status %d, got %d\n",
404 EXPECTED_STATUS, WEXITSTATUS (status));