/*      $OpenBSD: setuid_none.c,v 1.3 2021/12/14 06:28:13 deraadt Exp $ */
/*
 *      Written by Bret Stephen Lambert <blambert@openbsd.org> 2014
 *      Public Domain.
 */

#include <sys/types.h>
#include <sys/signal.h>
#include <sys/proc.h>
#include <sys/sysctl.h>
#include <sys/wait.h>

#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <pwd.h>
#include <unistd.h>

#include "setuid_regress.h"

int
main(int argc, char *argv[])
{
        struct kinfo_proc        kproc;
        uid_t                    uid;

        uid = getuid();

        checkuids(uid, uid, uid, "getuid");

        /* should only respond to setuid upon exec */
        if (issetugid())
                errx(1, "process incorrectly marked as issetugid()");

        if (read_kproc_pid(&kproc, getpid()) == -1)
                err(1, "kproc read failed");

        if (kproc.p_psflags & PS_SUGID)
                errx(1, "PS_SUGID incorrectly set");
        if (kproc.p_psflags & PS_SUGIDEXEC)
                errx(1, "PS_SUGIDEXEC incorrectly set");

        exit(0);
}