#include #include #include #include #include #include #include #include #ifndef PR_CAP_AMBIENT #define PR_CAP_AMBIENT 47 # define PR_CAP_AMBIENT_IS_SET 1 # define PR_CAP_AMBIENT_RAISE 2 # define PR_CAP_AMBIENT_LOWER 3 # define PR_CAP_AMBIENT_CLEAR_ALL 4 #endif #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 19) # define HAVE_GETAUXVAL #endif static bool bool_arg(char **argv, int i) { if (!strcmp(argv[i], "0")) return false; else if (!strcmp(argv[i], "1")) return true; else errx(1, "wrong argv[%d]", i); } int main(int argc, char **argv) { const char *atsec = ""; /* * Be careful just in case a setgid or setcapped copy of this * helper gets out. */ if (argc != 5) errx(1, "wrong argc"); #ifdef HAVE_GETAUXVAL if (getauxval(AT_SECURE)) atsec = " (AT_SECURE is set)"; else atsec = " (AT_SECURE is not set)"; #endif capng_get_caps_process(); if (capng_have_capability(CAPNG_EFFECTIVE, CAP_NET_BIND_SERVICE) != bool_arg(argv, 1)) { printf("[FAIL]\tWrong effective state%s\n", atsec); return 1; } if (capng_have_capability(CAPNG_PERMITTED, CAP_NET_BIND_SERVICE) != bool_arg(argv, 2)) { printf("[FAIL]\tWrong permitted state%s\n", atsec); return 1; } if (capng_have_capability(CAPNG_INHERITABLE, CAP_NET_BIND_SERVICE) != bool_arg(argv, 3)) { printf("[FAIL]\tWrong inheritable state%s\n", atsec); return 1; } if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_NET_BIND_SERVICE, 0, 0, 0) != bool_arg(argv, 4)) { printf("[FAIL]\tWrong ambient state%s\n", atsec); return 1; } printf("[OK]\tCapabilities after execve were correct\n"); return 0; } 8b08a1be82edca6cfc3cb7e86f674e0ede9de2'>treecommitdiff
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