1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
/* test for a trapdoor uid system */
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
main()
{
if (getuid() != 0) {
fprintf(stderr,"ERROR: This test must be run as root - assuming \
non-trapdoor system\n");
exit(0);
}
#if defined(HAVE_SETRESUID)
if (setresuid(1,1,-1) != 0) exit(1);
if (getuid() != 1) exit(1);
if (geteuid() != 1) exit(1);
if (setresuid(0,0,0) != 0) exit(1);
if (getuid() != 0) exit(1);
if (geteuid() != 0) exit(1);
#elif defined(HAVE_SETREUID)
/* Set real uid to 1. */
if (setreuid(1,-1) != 0) exit(1);
if (getuid() != 1) exit(1);
/* Go back to root. */
if (setreuid(0,-1) != 0) exit(1);
if (getuid() != 0) exit(1);
/* Now set euid to 1. */
if (setreuid(-1,1) != 0) exit(1);
if (geteuid() != 1) exit(1);
/* Go back to root. */
if (setreuid(0,0) != 0) exit(1);
if (getuid() != 0) exit(1);
if (geteuid() != 0) exit(1);
#else
if (seteuid(1) != 0) exit(1);
if (geteuid() != 1) exit(1);
if (seteuid(0) != 0) exit(1);
if (geteuid() != 0) exit(1);
#endif
#if defined(HAVE_SETRESGID)
if (setresgid(1,1,1) != 0) exit(1);
if (getgid() != 1) exit(1);
if (getegid() != 1) exit(1);
if (setresgid(0,0,0) != 0) exit(1);
if (getgid() != 0) exit(1);
if (getegid() != 0) exit(1);
#elif defined(HAVE_SETREGID)
if (setregid(1,1) != 0) exit(1);
if (getgid() != 1) exit(1);
if (getegid() != 1) exit(1);
if (setregid(0,0) != 0) exit(1);
if (getgid() != 0) exit(1);
if (getegid() != 0) exit(1);
#else
if (setegid(1) != 0) exit(1);
if (getegid() != 1) exit(1);
if (setegid(0) != 0) exit(1);
if (getegid() != 0) exit(1);
#endif
exit(0);
}
|
