gstreamer/libs/gst/check/libcheck/check_run.c
Vincent Penquerc'h b9313afc75 check: only call setpgid on valid child PIDs
Coverity 206186
2014-04-07 15:40:45 +01:00

602 lines
15 KiB
C

/*
* Check: a unit test framework for C
* Copyright (C) 2001, 2002 Arien Malec
*
* This 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.
*
* This 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 this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <sys/types.h>
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <signal.h>
#include "check.h"
#include "check_error.h"
#include "check_list.h"
#include "check_impl.h"
#include "check_msg.h"
#include "check_log.h"
enum rinfo
{
CK_R_SIG,
CK_R_PASS,
CK_R_EXIT,
CK_R_FAIL_TEST,
CK_R_FAIL_FIXTURE
};
enum tf_type
{
CK_FORK_TEST,
CK_NOFORK_TEST,
CK_NOFORK_FIXTURE
};
/* all functions are defined in the same order they are declared.
functions that depend on forking are gathered all together.
non-static functions are at the end of the file. */
static void srunner_run_init (SRunner * sr, enum print_output print_mode);
static void srunner_run_end (SRunner * sr, enum print_output print_mode);
static void srunner_iterate_suites (SRunner * sr, enum print_output print_mode);
static void srunner_iterate_tcase_tfuns (SRunner * sr, TCase * tc);
static void srunner_add_failure (SRunner * sr, TestResult * tf);
static int srunner_run_unchecked_setup (SRunner * sr, TCase * tc);
static TestResult *tcase_run_checked_setup (SRunner * sr, TCase * tc);
static void srunner_run_teardown (List * l);
static void srunner_run_unchecked_teardown (TCase * tc);
static void tcase_run_checked_teardown (TCase * tc);
static void srunner_run_tcase (SRunner * sr, TCase * tc);
static TestResult *tcase_run_tfun_nofork (SRunner * sr, TCase * tc, TF * tf,
int i);
static TestResult *receive_result_info_nofork (const char *tcname,
const char *tname, int iter);
static void set_nofork_info (TestResult * tr);
static char *pass_msg (void);
#ifdef _POSIX_VERSION
static TestResult *tcase_run_tfun_fork (SRunner * sr, TCase * tc, TF * tf,
int i);
static TestResult *receive_result_info_fork (const char *tcname,
const char *tname, int iter, int status, int expected_signal,
unsigned char allowed_exit_value);
static void set_fork_info (TestResult * tr, int status, int expected_signal,
unsigned char allowed_exit_value);
static char *signal_msg (int sig);
static char *signal_error_msg (int signal_received, int signal_expected);
static char *exit_msg (int exitstatus);
static int waserror (int status, int expected_signal);
static int alarm_received;
static pid_t group_pid;
static void CK_ATTRIBUTE_UNUSED
sig_handler (int sig_nr)
{
switch (sig_nr) {
case SIGALRM:
alarm_received = 1;
killpg (group_pid, SIGKILL);
break;
default:
eprintf ("Unhandled signal: %d", __FILE__, __LINE__, sig_nr);
break;
}
}
#endif /* _POSIX_VERSION */
#define MSG_LEN 100
static void
srunner_run_init (SRunner * sr, enum print_output print_mode)
{
set_fork_status (srunner_fork_status (sr));
setup_messaging ();
srunner_init_logging (sr, print_mode);
log_srunner_start (sr);
}
static void
srunner_run_end (SRunner * sr, enum print_output CK_ATTRIBUTE_UNUSED print_mode)
{
log_srunner_end (sr);
srunner_end_logging (sr);
teardown_messaging ();
set_fork_status (CK_FORK);
}
static void
srunner_iterate_suites (SRunner * sr,
enum print_output CK_ATTRIBUTE_UNUSED print_mode)
{
List *slst;
List *tcl;
TCase *tc;
slst = sr->slst;
for (list_front (slst); !list_at_end (slst); list_advance (slst)) {
Suite *s = list_val (slst);
log_suite_start (sr, s);
tcl = s->tclst;
for (list_front (tcl); !list_at_end (tcl); list_advance (tcl)) {
tc = list_val (tcl);
srunner_run_tcase (sr, tc);
}
log_suite_end (sr, s);
}
}
static void
srunner_iterate_tcase_tfuns (SRunner * sr, TCase * tc)
{
List *tfl;
TF *tfun;
TestResult *tr = NULL;
tfl = tc->tflst;
for (list_front (tfl); !list_at_end (tfl); list_advance (tfl)) {
int i;
tfun = list_val (tfl);
for (i = tfun->loop_start; i < tfun->loop_end; i++) {
log_test_start (sr, tc, tfun);
switch (srunner_fork_status (sr)) {
case CK_FORK:
#ifdef _POSIX_VERSION
tr = tcase_run_tfun_fork (sr, tc, tfun, i);
#else /* _POSIX_VERSION */
eprintf ("This version does not support fork", __FILE__, __LINE__);
#endif /* _POSIX_VERSION */
break;
case CK_NOFORK:
tr = tcase_run_tfun_nofork (sr, tc, tfun, i);
break;
default:
eprintf ("Bad fork status in SRunner", __FILE__, __LINE__);
}
srunner_add_failure (sr, tr);
log_test_end (sr, tr);
}
}
}
static void
srunner_add_failure (SRunner * sr, TestResult * tr)
{
list_add_end (sr->resultlst, tr);
sr->stats->n_checked++; /* count checks during setup, test, and teardown */
if (tr->rtype == CK_FAILURE)
sr->stats->n_failed++;
else if (tr->rtype == CK_ERROR)
sr->stats->n_errors++;
}
static int
srunner_run_unchecked_setup (SRunner * sr, TCase * tc)
{
TestResult *tr;
List *l;
Fixture *f;
int rval = 1;
set_fork_status (CK_NOFORK);
l = tc->unch_sflst;
for (list_front (l); !list_at_end (l); list_advance (l)) {
send_ctx_info (CK_CTX_SETUP);
f = list_val (l);
f->fun ();
tr = receive_result_info_nofork (tc->name, "unchecked_setup", 0);
if (tr->rtype != CK_PASS) {
srunner_add_failure (sr, tr);
rval = 0;
break;
}
free (tr->file);
free (tr->msg);
free (tr);
}
set_fork_status (srunner_fork_status (sr));
return rval;
}
static TestResult *
tcase_run_checked_setup (SRunner * sr, TCase * tc)
{
TestResult *tr = NULL;
List *l;
Fixture *f;
enum fork_status fstat = srunner_fork_status (sr);
l = tc->ch_sflst;
if (fstat == CK_FORK) {
send_ctx_info (CK_CTX_SETUP);
}
for (list_front (l); !list_at_end (l); list_advance (l)) {
if (fstat == CK_NOFORK) {
send_ctx_info (CK_CTX_SETUP);
}
f = list_val (l);
f->fun ();
/* Stop the setup and return the failure if nofork mode. */
if (fstat == CK_NOFORK) {
tr = receive_result_info_nofork (tc->name, "checked_setup", 0);
if (tr->rtype != CK_PASS) {
break;
}
free (tr->file);
free (tr->msg);
free (tr);
tr = NULL;
}
}
return tr;
}
static void
srunner_run_teardown (List * l)
{
Fixture *f;
for (list_front (l); !list_at_end (l); list_advance (l)) {
f = list_val (l);
send_ctx_info (CK_CTX_TEARDOWN);
f->fun ();
}
}
static void
srunner_run_unchecked_teardown (TCase * tc)
{
srunner_run_teardown (tc->unch_tflst);
}
static void
tcase_run_checked_teardown (TCase * tc)
{
srunner_run_teardown (tc->ch_tflst);
}
static void
srunner_run_tcase (SRunner * sr, TCase * tc)
{
if (srunner_run_unchecked_setup (sr, tc)) {
srunner_iterate_tcase_tfuns (sr, tc);
srunner_run_unchecked_teardown (tc);
}
}
static TestResult *
tcase_run_tfun_nofork (SRunner * sr, TCase * tc, TF * tfun, int i)
{
TestResult *tr;
tr = tcase_run_checked_setup (sr, tc);
if (tr == NULL) {
tfun->fn (i);
tcase_run_checked_teardown (tc);
return receive_result_info_nofork (tc->name, tfun->name, i);
}
return tr;
}
static TestResult *
receive_result_info_nofork (const char *tcname, const char *tname, int iter)
{
TestResult *tr;
tr = receive_test_result (0);
if (tr == NULL)
eprintf ("Failed to receive test result", __FILE__, __LINE__);
tr->tcname = tcname;
tr->tname = tname;
tr->iter = iter;
set_nofork_info (tr);
return tr;
}
static void
set_nofork_info (TestResult * tr)
{
if (tr->msg == NULL) {
tr->rtype = CK_PASS;
tr->msg = pass_msg ();
} else {
tr->rtype = CK_FAILURE;
}
}
static char *
pass_msg (void)
{
char *msg = emalloc (sizeof ("Passed"));
strcpy (msg, "Passed");
return msg;
}
#ifdef _POSIX_VERSION
static TestResult *
tcase_run_tfun_fork (SRunner * sr, TCase * tc, TF * tfun, int i)
{
pid_t pid_w;
pid_t pid;
int status = 0;
pid = fork ();
if (pid == -1)
eprintf ("Error in call to fork:", __FILE__, __LINE__ - 2);
if (pid == 0) {
setpgid (0, 0);
group_pid = getpgrp ();
tcase_run_checked_setup (sr, tc);
tfun->fn (i);
tcase_run_checked_teardown (tc);
exit (EXIT_SUCCESS);
} else {
group_pid = pid;
}
alarm_received = 0;
alarm (tc->timeout);
do {
pid_w = waitpid (pid, &status, 0);
} while (pid_w == -1);
killpg (pid, SIGKILL); /* Kill remaining processes. */
return receive_result_info_fork (tc->name, tfun->name, i, status,
tfun->signal, tfun->allowed_exit_value);
}
static TestResult *
receive_result_info_fork (const char *tcname,
const char *tname,
int iter, int status, int expected_signal, unsigned char allowed_exit_value)
{
TestResult *tr;
tr = receive_test_result (waserror (status, expected_signal));
if (tr == NULL)
eprintf ("Failed to receive test result", __FILE__, __LINE__);
tr->tcname = tcname;
tr->tname = tname;
tr->iter = iter;
set_fork_info (tr, status, expected_signal, allowed_exit_value);
return tr;
}
static void
set_fork_info (TestResult * tr, int status, int signal_expected,
unsigned char allowed_exit_value)
{
int was_sig = WIFSIGNALED (status);
int was_exit = WIFEXITED (status);
int exit_status = WEXITSTATUS (status);
int signal_received = WTERMSIG (status);
if (was_sig) {
if (signal_expected == signal_received) {
if (alarm_received) {
/* Got alarm instead of signal */
tr->rtype = CK_ERROR;
tr->msg = signal_error_msg (signal_received, signal_expected);
} else {
tr->rtype = CK_PASS;
tr->msg = pass_msg ();
}
} else if (signal_expected != 0) {
/* signal received, but not the expected one */
tr->rtype = CK_ERROR;
tr->msg = signal_error_msg (signal_received, signal_expected);
} else {
/* signal received and none expected */
tr->rtype = CK_ERROR;
tr->msg = signal_msg (signal_received);
}
} else if (signal_expected == 0) {
if (was_exit && exit_status == allowed_exit_value) {
tr->rtype = CK_PASS;
tr->msg = pass_msg ();
} else if (was_exit && exit_status != allowed_exit_value) {
if (tr->msg == NULL) { /* early exit */
tr->rtype = CK_ERROR;
tr->msg = exit_msg (exit_status);
} else {
tr->rtype = CK_FAILURE;
}
}
} else { /* a signal was expected and none raised */
if (was_exit) {
tr->msg = exit_msg (exit_status);
if (exit_status == allowed_exit_value)
tr->rtype = CK_FAILURE; /* normal exit status */
else
tr->rtype = CK_FAILURE; /* early exit */
}
}
}
static char *
signal_msg (int signal)
{
char *msg = emalloc (MSG_LEN); /* free'd by caller */
if (alarm_received) {
snprintf (msg, MSG_LEN, "Test timeout expired");
} else {
snprintf (msg, MSG_LEN, "Received signal %d (%s)",
signal, strsignal (signal));
}
return msg;
}
static char *
signal_error_msg (int signal_received, int signal_expected)
{
char *sig_r_str;
char *sig_e_str;
char *msg = emalloc (MSG_LEN); /* free'd by caller */
sig_r_str = strdup (strsignal (signal_received));
sig_e_str = strdup (strsignal (signal_expected));
if (alarm_received) {
snprintf (msg, MSG_LEN, "Test timeout expired, expected signal %d (%s)",
signal_expected, sig_e_str);
} else {
snprintf (msg, MSG_LEN, "Received signal %d (%s), expected %d (%s)",
signal_received, sig_r_str, signal_expected, sig_e_str);
}
free (sig_r_str);
free (sig_e_str);
return msg;
}
static char *
exit_msg (int exitval)
{
char *msg = emalloc (MSG_LEN); /* free'd by caller */
snprintf (msg, MSG_LEN, "Early exit with return value %d", exitval);
return msg;
}
static int
waserror (int status, int signal_expected)
{
int was_sig = WIFSIGNALED (status);
int was_exit = WIFEXITED (status);
int exit_status = WEXITSTATUS (status);
int signal_received = WTERMSIG (status);
return ((was_sig && (signal_received != signal_expected)) ||
(was_exit && exit_status != 0));
}
#endif /* _POSIX_VERSION */
enum fork_status
srunner_fork_status (SRunner * sr)
{
if (sr->fstat == CK_FORK_GETENV) {
char *env = getenv ("CK_FORK");
if (env == NULL)
return CK_FORK;
if (strcmp (env, "no") == 0)
return CK_NOFORK;
else {
#ifdef _POSIX_VERSION
return CK_FORK;
#else /* _POSIX_VERSION */
eprintf ("This version does not support fork", __FILE__, __LINE__);
return CK_NOFORK;
#endif /* _POSIX_VERSION */
}
} else
return sr->fstat;
}
void
srunner_set_fork_status (SRunner * sr, enum fork_status fstat)
{
sr->fstat = fstat;
}
void
srunner_run_all (SRunner * sr, enum print_output print_mode)
{
#ifdef _POSIX_VERSION
struct sigaction old_action;
struct sigaction new_action;
#endif /* _POSIX_VERSION */
if (sr == NULL)
return;
if (print_mode >= CK_LAST) {
eprintf ("Bad print_mode argument to srunner_run_all: %d",
__FILE__, __LINE__, print_mode);
}
#ifdef _POSIX_VERSION
memset (&new_action, 0, sizeof new_action);
new_action.sa_handler = sig_handler;
sigaction (SIGALRM, &new_action, &old_action);
#endif /* _POSIX_VERSION */
srunner_run_init (sr, print_mode);
srunner_iterate_suites (sr, print_mode);
srunner_run_end (sr, print_mode);
#ifdef _POSIX_VERSION
sigaction (SIGALRM, &old_action, NULL);
#endif /* _POSIX_VERSION */
}
pid_t
check_fork (void)
{
#ifdef _POSIX_VERSION
pid_t pid = fork ();
/* Set the process to a process group to be able to kill it easily. */
if (pid > 0)
setpgid (pid, group_pid);
return pid;
#else /* _POSIX_VERSION */
eprintf ("This version does not support fork", __FILE__, __LINE__);
return 0;
#endif /* _POSIX_VERSION */
}
void
check_waitpid_and_exit (pid_t pid CK_ATTRIBUTE_UNUSED)
{
#ifdef _POSIX_VERSION
pid_t pid_w;
int status;
if (pid > 0) {
do {
pid_w = waitpid (pid, &status, 0);
} while (pid_w == -1);
if (waserror (status, 0)) {
exit (EXIT_FAILURE);
}
}
exit (EXIT_SUCCESS);
#else /* _POSIX_VERSION */
eprintf ("This version does not support fork", __FILE__, __LINE__);
#endif /* _POSIX_VERSION */
}