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Diffstat (limited to 'test/test-skeleton.c')
| -rw-r--r-- | test/test-skeleton.c | 385 |
1 files changed, 385 insertions, 0 deletions
diff --git a/test/test-skeleton.c b/test/test-skeleton.c new file mode 100644 index 000000000..0547d9a2a --- /dev/null +++ b/test/test-skeleton.c @@ -0,0 +1,385 @@ +/* Skeleton for test programs. + Copyright (C) 1998,2000-2004, 2005 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <errno.h> +#include <getopt.h> +#include <malloc.h> +#include <search.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/resource.h> +#include <sys/wait.h> +#include <sys/param.h> +#include <time.h> + +/* The test function is normally called `do_test' and it is called + with argc and argv as the arguments. We nevertheless provide the + possibility to overwrite this name. */ +#ifndef TEST_FUNCTION +# define TEST_FUNCTION do_test (argc, argv) +#endif + +#ifndef TEST_DATA_LIMIT +# define TEST_DATA_LIMIT (64 << 20) /* Data limit (bytes) to run with. */ +#endif + +#define OPT_DIRECT 1000 +#define OPT_TESTDIR 1001 + +static struct option options[] = +{ +#ifdef CMDLINE_OPTIONS + CMDLINE_OPTIONS +#endif + { "direct", no_argument, NULL, OPT_DIRECT }, + { "test-dir", required_argument, NULL, OPT_TESTDIR }, + { NULL, 0, NULL, 0 } +}; + +/* PID of the test itself. */ +static pid_t pid; + +/* Directory to place temporary files in. */ +static const char *test_dir; + +/* List of temporary files. */ +struct temp_name_list +{ + struct qelem q; + const char *name; +} *temp_name_list; + +/* Add temporary files in list. */ +static void +__attribute__ ((unused)) +add_temp_file (const char *name) +{ + struct temp_name_list *newp + = (struct temp_name_list *) calloc (sizeof (*newp), 1); + if (newp != NULL) + { + newp->name = name; + if (temp_name_list == NULL) + temp_name_list = (struct temp_name_list *) &newp->q; + else + insque (newp, temp_name_list); + } +} + +/* Delete all temporary files. */ +static void +delete_temp_files (void) +{ + while (temp_name_list != NULL) + { + remove (temp_name_list->name); + temp_name_list = (struct temp_name_list *) temp_name_list->q.q_forw; + } +} + +/* Create a temporary file. */ +static int +__attribute__ ((unused)) +create_temp_file (const char *base, char **filename) +{ + char *fname; + int fd; + + fname = (char *) malloc (strlen (test_dir) + 1 + strlen (base) + + sizeof ("XXXXXX")); + if (fname == NULL) + { + puts ("out of memory"); + return -1; + } + strcpy (stpcpy (stpcpy (stpcpy (fname, test_dir), "/"), base), "XXXXXX"); + + fd = mkstemp (fname); + if (fd == -1) + { + printf ("cannot open temporary file '%s': %m\n", fname); + free (fname); + return -1; + } + + add_temp_file (fname); + if (filename != NULL) + *filename = fname; + + return fd; +} + +/* Timeout handler. We kill the child and exit with an error. */ +static void +__attribute__ ((noreturn)) +timeout_handler (int sig __attribute__ ((unused))) +{ + int killed; + int status; + + /* Send signal. */ + kill (pid, SIGKILL); + + /* Wait for it to terminate. */ + int i; + for (i = 0; i < 5; ++i) + { + killed = waitpid (pid, &status, WNOHANG|WUNTRACED); + if (killed != 0) + break; + + /* Delay, give the system time to process the kill. If the + nanosleep() call return prematurely, all the better. We + won't restart it since this probably means the child process + finally died. */ + struct timespec ts; + ts.tv_sec = 0; + ts.tv_nsec = 100000000; + nanosleep (&ts, NULL); + } + if (killed != 0 && killed != pid) + { + perror ("Failed to kill test process"); + exit (1); + } + +#ifdef CLEANUP_HANDLER + CLEANUP_HANDLER; +#endif + + /* If we expected this signal: good! */ +#ifdef EXPECTED_SIGNAL + if (EXPECTED_SIGNAL == SIGALRM) + exit (0); +#endif + + if (killed == 0 || (WIFSIGNALED (status) && WTERMSIG (status) == SIGKILL)) + fputs ("Timed out: killed the child process\n", stderr); + else if (WIFSTOPPED (status)) + fprintf (stderr, "Timed out: the child process was %s\n", + strsignal (WSTOPSIG (status))); + else if (WIFSIGNALED (status)) + fprintf (stderr, "Timed out: the child process got signal %s\n", + strsignal (WTERMSIG (status))); + else + fprintf (stderr, "Timed out: killed the child process but it exited %d\n", + WEXITSTATUS (status)); + + /* Exit with an error. */ + exit (1); +} + +/* We provide the entry point here. */ +int +main (int argc, char *argv[]) +{ + int direct = 0; /* Directly call the test function? */ + int status; + int opt; + unsigned int timeoutfactor = 1; + pid_t termpid; + + /* Make uses of freed and uninitialized memory known. */ +#ifndef M_PERTURB +# define M_PERTURB -6 +#endif + mallopt (M_PERTURB, 42); + +#ifdef STDOUT_UNBUFFERED + setbuf (stdout, NULL); +#endif + + while ((opt = getopt_long (argc, argv, "+", options, NULL)) != -1) + switch (opt) + { + case '?': + exit (1); + case OPT_DIRECT: + direct = 1; + break; + case OPT_TESTDIR: + test_dir = optarg; + break; +#ifdef CMDLINE_PROCESS + CMDLINE_PROCESS +#endif + } + + /* If set, read the test TIMEOUTFACTOR value from the environment. + This value is used to scale the default test timeout values. */ + char *envstr_timeoutfactor = getenv ("TIMEOUTFACTOR"); + if (envstr_timeoutfactor != NULL) + { + char *envstr_conv = envstr_timeoutfactor; + unsigned long int env_fact; + + env_fact = strtoul (envstr_timeoutfactor, &envstr_conv, 0); + if (*envstr_conv == '\0' && envstr_conv != envstr_timeoutfactor) + timeoutfactor = MAX (env_fact, 1); + } + + /* Set TMPDIR to specified test directory. */ + if (test_dir != NULL) + { + setenv ("TMPDIR", test_dir, 1); + + if (chdir (test_dir) < 0) + { + perror ("chdir"); + exit (1); + } + } + else + { + test_dir = getenv ("TMPDIR"); + if (test_dir == NULL || test_dir[0] == '\0') + test_dir = "/tmp"; + } + + /* Make sure we see all message, even those on stdout. */ + setvbuf (stdout, NULL, _IONBF, 0); + + /* make sure temporary files are deleted. */ + atexit (delete_temp_files); + + /* Correct for the possible parameters. */ + argv[optind - 1] = argv[0]; + argv += optind - 1; + argc -= optind - 1; + + /* Call the initializing function, if one is available. */ +#ifdef PREPARE + PREPARE (argc, argv); +#endif + + /* If we are not expected to fork run the function immediately. */ + if (direct) + return TEST_FUNCTION; + + /* Set up the test environment: + - prevent core dumps + - set up the timer + - fork and execute the function. */ + + pid = fork (); + if (pid == 0) + { + /* This is the child. */ +#ifdef RLIMIT_CORE + /* Try to avoid dumping core. */ + struct rlimit core_limit; + core_limit.rlim_cur = 0; + core_limit.rlim_max = 0; + setrlimit (RLIMIT_CORE, &core_limit); +#endif + +#ifdef RLIMIT_DATA + /* Try to avoid eating all memory if a test leaks. */ + struct rlimit data_limit; + if (getrlimit (RLIMIT_DATA, &data_limit) == 0) + { + if (TEST_DATA_LIMIT == RLIM_INFINITY) + data_limit.rlim_cur = data_limit.rlim_max; + else if (data_limit.rlim_cur > (rlim_t) TEST_DATA_LIMIT) + data_limit.rlim_cur = MIN ((rlim_t) TEST_DATA_LIMIT, + data_limit.rlim_max); + if (setrlimit (RLIMIT_DATA, &data_limit) < 0) + perror ("setrlimit: RLIMIT_DATA"); + } + else + perror ("getrlimit: RLIMIT_DATA"); +#endif + + /* We put the test process in its own pgrp so that if it bogusly + generates any job control signals, they won't hit the whole build. */ + setpgid (0, 0); + + /* Execute the test function and exit with the return value. */ + exit (TEST_FUNCTION); + } + else if (pid < 0) + { + perror ("Cannot fork test program"); + exit (1); + } + + /* Set timeout. */ +#ifndef TIMEOUT + /* Default timeout is two seconds. */ +# define TIMEOUT 2 +#endif + signal (SIGALRM, timeout_handler); + alarm (TIMEOUT * timeoutfactor); + + /* Wait for the regular termination. */ + termpid = TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)); + if (termpid == -1) + { + printf ("Waiting for test program failed: %m\n"); + exit (1); + } + if (termpid != pid) + { + printf ("Oops, wrong test program terminated: expected %ld, got %ld\n", + (long int) pid, (long int) termpid); + exit (1); + } + +#ifndef EXPECTED_SIGNAL + /* We don't expect any signal. */ +# define EXPECTED_SIGNAL 0 +#endif + if (WTERMSIG (status) != EXPECTED_SIGNAL) + { + if (EXPECTED_SIGNAL != 0) + { + if (WTERMSIG (status) == 0) + fprintf (stderr, + "Expected signal '%s' from child, got none\n", + strsignal (EXPECTED_SIGNAL)); + else + fprintf (stderr, + "Incorrect signal from child: got `%s', need `%s'\n", + strsignal (WTERMSIG (status)), + strsignal (EXPECTED_SIGNAL)); + } + else + fprintf (stderr, "Didn't expect signal from child: got `%s'\n", + strsignal (WTERMSIG (status))); + exit (1); + } + + /* Simply exit with the return value of the test. */ +#ifndef EXPECTED_STATUS + return WEXITSTATUS (status); +#else + if (WEXITSTATUS (status) != EXPECTED_STATUS) + { + fprintf (stderr, "Expected status %d, got %d\n", + EXPECTED_STATUS, WEXITSTATUS (status)); + exit (1); + } + + return 0; +#endif +} |