| From 499e81bfcdd9379bf4619a7c3ad85ed7f2b1dca5 Mon Sep 17 00:00:00 2001 |
| From: Fabrice Fontaine <fontaine.fabrice@gmail.com> |
| Date: Thu, 28 Jul 2022 10:05:18 +0200 |
| Subject: [PATCH] main.c: fix build with kernel < 4.3 |
| |
| PR_CAP_AMBIENT is only available since kernel 4.3 and |
| https://github.com/torvalds/linux/commit/58319057b7847667f0c9585b9de0e8932b0fdb08 |
| resulting in the following build failure since version 1.7 and |
| https://github.com/rfjakob/earlyoom/commit/9edc5cfc9ad794ed59baec5e6ee8d1060456a315: |
| |
| main.c: In function 'main': |
| main.c:119:11: error: 'PR_CAP_AMBIENT' undeclared (first use in this function) |
| prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0, 0, 0); |
| ^ |
| |
| Fixes: |
| - http://autobuild.buildroot.org/results/5a0ad7e1f6de3c37e40c37d8f583fc699a457753 |
| |
| Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com> |
| [Upstream status: https://github.com/rfjakob/earlyoom/pull/276] |
| --- |
| main.c | 2 ++ |
| 1 file changed, 2 insertions(+) |
| |
| diff --git a/main.c b/main.c |
| index c068c7c..99ca9e2 100644 |
| --- a/main.c |
| +++ b/main.c |
| @@ -115,11 +115,13 @@ int main(int argc, char* argv[]) |
| fatal(4, "Could not cd to /proc: %s", strerror(errno)); |
| } |
| |
| +#ifdef PR_CAP_AMBIENT |
| // When systemd starts a daemon with capabilities, it uses ambient |
| // capabilities to do so. If not dropped, the capabilities can spread |
| // to any child process. This is usually not necessary and its a good |
| // idea to drop them if not needed. |
| prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_CLEAR_ALL, 0, 0, 0); |
| +#endif |
| |
| meminfo_t m = parse_meminfo(); |
| |
| -- |
| 2.35.1 |
| |
