1 /* $OpenBSD: suidexec_none.c,v 1.3 2021/12/15 18:42:38 anton Exp $ */
2 /*
3 * Written by Bret Stephen Lambert <blambert@openbsd.org> 2014
4 * Public Domain.
5 */
6
7 #include <sys/types.h>
8 #include <sys/signal.h>
9 #include <sys/proc.h>
10 #include <sys/sysctl.h>
11 #include <sys/wait.h>
12
13 #include <err.h>
14 #include <stdio.h>
15 #include <stdlib.h>
16 #include <string.h>
17 #include <pwd.h>
18 #include <unistd.h>
19
20 #include "setuid_regress.h"
21
22 int
main(int argc,char * argv[])23 main(int argc, char *argv[])
24 {
25 struct kinfo_proc kproc;
26 char *toexec = NULL;
27
28 if (argc > 1) {
29 argv++;
30 if ((toexec = strdup(argv[0])) == NULL)
31 err(1, "strdup");
32 }
33
34 /* should only respond to setuid upon exec */
35 if (issetugid())
36 errx(1, "process incorrectly marked as issetugid()");
37
38 if (read_kproc_pid(&kproc, getpid()) == -1)
39 err(1, "kproc read failed");
40
41 if (kproc.p_psflags & PS_SUGID)
42 errx(1, "PS_SUGID not set");
43 if (kproc.p_psflags & PS_SUGIDEXEC)
44 errx(1, "PS_SUGIDEXEC incorrectly set");
45
46 if (toexec != NULL)
47 if (execv(toexec, argv) == -1)
48 err(1, "exec of %s failed", toexec);
49 free(toexec);
50
51 exit(0);
52 }
53