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#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/wait.h>
int
sml_test_exec(const char *progname, const char *output, int *ret)
{
pid_t pid;
int fd0, fd1, err, stat;
fd0 = open("/dev/null", O_WRONLY);
if (fd0 < 0) {
err = fd0;
goto error0;
}
fd1 = open(output, O_WRONLY);
if (fd1 < 0) {
err = fd1;
goto error1;
}
pid = fork();
if (pid == 0) {
dup2(fd0, STDIN_FILENO);
dup2(fd1, STDOUT_FILENO);
dup2(fd1, STDERR_FILENO);
execl(progname, progname, (char *)NULL);
abort();
}
if (pid < 0) {
err = pid;
goto error;
}
err = waitpid(pid, &stat, 0);
if (err < 0)
goto error;
if (WIFEXITED(stat)) {
ret[0] = 0;
ret[1] = WEXITSTATUS(stat);
} else if (WIFSIGNALED(stat)) {
ret[0] = 1;
ret[1] = WTERMSIG(stat);
} else if (WCOREDUMP(stat)) {
ret[0] = 2;
} else {
ret[0] = 3;
ret[1] = stat;
}
err = 0;
error:
close(fd1);
error1:
close(fd0);
error0:
return err;
}
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