static int helper_child(void *arg)
{
struct helper_data *data = arg;
char **argv = data->argv;
int err;
if (data->pre_exec != NULL)
(*data->pre_exec)(data->pre_data);
err = execvp_noalloc(data->buf, argv[0], argv);
/* If the exec succeeds, we don't get here */
write(data->fd, &err, sizeof(err));
return 0;
}
int main(int argc, char**argv)
{
char buf[PATH_MAX];
int ret;
argc--;
if (!argc) {
fprintf(stderr, "Not enough arguments\n");
return 1;
}
argv++;
if (ret = execvp_noalloc(buf, argv[0], argv)) {
errno = -ret;
perror("execvp_noalloc");
}
return 0;
}