1 /* $OpenBSD: setgid_exec_inherit.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 if (!issetugid())
35 errx(1, "process not marked as issetugid()");
36
37 if (read_kproc_pid(&kproc, getpid()) == -1)
38 err(1, "kproc read failed");
39
40 if (kproc.p_psflags & PS_SUGID)
41 errx(1, "PS_SUGID incorrectly set");
42 if (!(kproc.p_psflags & PS_SUGIDEXEC))
43 errx(1, "PS_SUGIDEXEC not set");
44
45 if (toexec != NULL)
46 if (execv(toexec, argv) == -1)
47 err(1, "exec of %s failed", toexec);
48 free(toexec);
49
50 exit(0);
51 }
52