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/*
* Copyright 2013, Michael Ellerman, IBM Corp.
* Licensed under GPLv2.
*/
#include <errno.h>
#include <signal.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include "subunit.h"
#include "utils.h"
#define TIMEOUT 120
#define KILL_TIMEOUT 5
int run_test(int (test_function)(void), char *name)
{
bool terminated;
int rc, status;
pid_t pid;
/* Make sure output is flushed before forking */
fflush(stdout);
pid = fork();
if (pid == 0) {
exit(test_function());
} else if (pid == -1) {
perror("fork");
return 1;
}
/* Wake us up in timeout seconds */
alarm(TIMEOUT);
terminated = false;
wait:
rc = waitpid(pid, &status, 0);
if (rc == -1) {
if (errno != EINTR) {
printf("unknown error from waitpid\n");
return 1;
}
if (terminated) {
printf("!! force killing %s\n", name);
kill(pid, SIGKILL);
return 1;
} else {
printf("!! killing %s\n", name);
kill(pid, SIGTERM);
terminated = true;
alarm(KILL_TIMEOUT);
goto wait;
}
}
if (WIFEXITED(status))
status = WEXITSTATUS(status);
else {
if (WIFSIGNALED(status))
printf("!! child died by signal %d\n", WTERMSIG(status));
else
printf("!! child died by unknown cause\n");
status = 1; /* Signal or other */
}
return status;
}
static void alarm_handler(int signum)
{
/* Jut wake us up from waitpid */
}
static struct sigaction alarm_action = {
.sa_handler = alarm_handler,
};
int test_harness(int (test_function)(void), char *name)
{
int rc;
test_start(name);
test_set_git_version(GIT_VERSION);
if (sigaction(SIGALRM, &alarm_action, NULL)) {
perror("sigaction");
test_error(name);
return 1;
}
rc = run_test(test_function, name);
test_finish(name, rc);
return rc;
}
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