| | 1 | // SPDX-License-Identifier: GPL-2.0 |
| | 2 | #include <cap-ng.h> |
| | 3 | #include <linux/capability.h> |
| | 4 | #include <stdbool.h> |
| | 5 | #include <string.h> |
| | 6 | #include <stdio.h> |
| | 7 | #include <sys/prctl.h> |
| | 8 | #include <sys/auxv.h> |
| | 9 | |
| | 10 | #include "../kselftest.h" |
| | 11 | |
| | 12 | #ifndef PR_CAP_AMBIENT |
| | 13 | #define PR_CAP_AMBIENT 47 |
| | 14 | # define PR_CAP_AMBIENT_IS_SET 1 |
| | 15 | # define PR_CAP_AMBIENT_RAISE 2 |
| | 16 | # define PR_CAP_AMBIENT_LOWER 3 |
| | 17 | # define PR_CAP_AMBIENT_CLEAR_ALL 4 |
| | 18 | #endif |
| | 19 | |
| | 20 | #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 19) |
| | 21 | # define HAVE_GETAUXVAL |
| | 22 | #endif |
| | 23 | |
| | 24 | static bool bool_arg(char **argv, int i) |
| | 25 | { |
| | 26 | if (!strcmp(argv[i], "0")) |
| | 27 | return false; |
| | 28 | else if (!strcmp(argv[i], "1")) |
| | 29 | return true; |
| | 30 | else { |
| | 31 | ksft_exit_fail_msg("wrong argv[%d]\n", i); |
| | 32 | return false; |
| | 33 | } |
| | 34 | } |
| | 35 | |
| | 36 | int main(int argc, char **argv) |
| | 37 | { |
| | 38 | const char *atsec = ""; |
| | 39 | |
| | 40 | /* |
| | 41 | * Be careful just in case a setgid or setcapped copy of this |
| | 42 | * helper gets out. |
| | 43 | */ |
| | 44 | |
| | 45 | if (argc != 5) |
| | 46 | ksft_exit_fail_msg("wrong argc\n"); |
| | 47 | |
| | 48 | #ifdef HAVE_GETAUXVAL |
| | 49 | if (getauxval(AT_SECURE)) |
| | 50 | atsec = " (AT_SECURE is set)"; |
| | 51 | else |
| | 52 | atsec = " (AT_SECURE is not set)"; |
| | 53 | #endif |
| | 54 | |
| | 55 | capng_get_caps_process(); |
| | 56 | |
| | 57 | if (capng_have_capability(CAPNG_EFFECTIVE, CAP_NET_BIND_SERVICE) != bool_arg(argv, 1)) { |
| | 58 | ksft_print_msg("Wrong effective state%s\n", atsec); |
| | 59 | return 1; |
| | 60 | } |
| | 61 | |
| | 62 | if (capng_have_capability(CAPNG_PERMITTED, CAP_NET_BIND_SERVICE) != bool_arg(argv, 2)) { |
| | 63 | ksft_print_msg("Wrong permitted state%s\n", atsec); |
| | 64 | return 1; |
| | 65 | } |
| | 66 | |
| | 67 | if (capng_have_capability(CAPNG_INHERITABLE, CAP_NET_BIND_SERVICE) != bool_arg(argv, 3)) { |
| | 68 | ksft_print_msg("Wrong inheritable state%s\n", atsec); |
| | 69 | return 1; |
| | 70 | } |
| | 71 | |
| | 72 | if (prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_NET_BIND_SERVICE, 0, 0, 0) != bool_arg(argv, 4)) { |
| | 73 | ksft_print_msg("Wrong ambient state%s\n", atsec); |
| | 74 | return 1; |
| | 75 | } |
| | 76 | |
| | 77 | ksft_print_msg("%s: Capabilities after execve were correct\n", |
| | 78 | "validate_cap:"); |
| | 79 | return 0; |
| | 80 | } |
projects / linux-2.6-block.git / blame_incremental