3 #include <linux/capability.h>
10 #ifndef PR_CAP_AMBIENT
11 #define PR_CAP_AMBIENT 47
12 # define PR_CAP_AMBIENT_IS_SET 1
13 # define PR_CAP_AMBIENT_RAISE 2
14 # define PR_CAP_AMBIENT_LOWER 3
15 # define PR_CAP_AMBIENT_CLEAR_ALL 4
18 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 19)
19 # define HAVE_GETAUXVAL
22 static bool bool_arg(char **argv, int i)
24 if (!strcmp(argv[i], "0"))
26 else if (!strcmp(argv[i], "1"))
29 errx(1, "wrong argv[%d]", i);
32 int main(int argc, char **argv)
34 const char *atsec = "";
37 * Be careful just in case a setgid or setcapped copy of this
42 errx(1, "wrong argc");
45 if (getauxval(AT_SECURE))
46 atsec = " (AT_SECURE is set)";
48 atsec = " (AT_SECURE is not set)";
51 capng_get_caps_process();
53 if (capng_have_capability(CAPNG_EFFECTIVE, CAP_NET_BIND_SERVICE) != bool_arg(argv, 1)) {
54 printf("[FAIL]\tWrong effective state%s\n", atsec);
57 if (capng_have_capability(CAPNG_PERMITTED, CAP_NET_BIND_SERVICE) != bool_arg(argv, 2)) {
58 printf("[FAIL]\tWrong permitted state%s\n", atsec);
61 if (capng_have_capability(CAPNG_INHERITABLE, CAP_NET_BIND_SERVICE) != bool_arg(argv, 3)) {
62 printf("[FAIL]\tWrong inheritable state%s\n", atsec);
66 if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_NET_BIND_SERVICE, 0, 0, 0) != bool_arg(argv, 4)) {
67 printf("[FAIL]\tWrong ambient state%s\n", atsec);
71 printf("[OK]\tCapabilities after execve were correct\n");