if (pid == 0) {
// child
execvp(args[0], args);
- fprintf(stderr, "error: failed to execute %s\n", args[0]);
+ fprintf(stderr, "error: failed to execute:");
+ for (unsigned i = 0; args[i]; ++i) {
+ fprintf(stderr, " %s", args[i]);
+ }
+ fprintf(stderr, "\n");
exit(-1);
} else {
// parent
return -1;
}
int status = -1;
+ int ret;
waitpid(pid, &status, 0);
- return status;
+ if (WIFEXITED(status)) {
+ ret = WEXITSTATUS(status);
+ } else if (WIFSIGNALED(status)) {
+ // match shell return code
+ ret = WTERMSIG(status) + 128;
+ } else {
+ ret = 128;
+ }
+ return ret;
}
}