From f7dc3ab9f43b67abcbd34062b9352ab42debec49 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Wed, 21 May 2014 09:31:22 +0900 Subject: logind: don't apply RemoveIPC= to system users We shouldn't destroy IPC objects of system users on logout. http://lists.freedesktop.org/archives/systemd-devel/2014-April/018373.html This introduces SYSTEM_UID_MAX defined to the maximum UID of system users. This value is determined compile-time, either as configure switch or from /etc/login.defs. (We don't read that file at runtime, since this is really a choice for a system builder, not the end user.) While we are at it we then also update journald to use SYSTEM_UID_MAX when we decide whether to split out log data for a specific client. --- src/shared/clean-ipc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/shared') diff --git a/src/shared/clean-ipc.c b/src/shared/clean-ipc.c index ddd42cc2b2..cb1722614e 100644 --- a/src/shared/clean-ipc.c +++ b/src/shared/clean-ipc.c @@ -332,8 +332,8 @@ fail: int clean_ipc(uid_t uid) { int ret = 0, r; - /* Refuse to clean IPC of the root user */ - if (uid == 0) + /* Refuse to clean IPC of the root and system users */ + if (uid <= SYSTEM_UID_MAX) return 0; r = clean_sysvipc_shm(uid); -- cgit v1.2.3-54-g00ecf