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From 602786c9171d189e859796fd61873835fe858a06 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 19 May 2015 17:19:27 +0200
Subject: [PATCH] mount: properly check for mounts currently in
/proc/self/mountinfo
http://lists.freedesktop.org/archives/systemd-devel/2015-May/032059.html
(cherry picked from commit 394763f63c1941cafd9d3bf81e8151a2206474a7)
Cherry-picked from: 394763f
Resolves: #1222517
---
src/core/mount.c | 33 +++++++++++++++++++--------------
1 file changed, 19 insertions(+), 14 deletions(-)
diff --git a/src/core/mount.c b/src/core/mount.c
index fa63f2426..1f1a41ab6 100644
--- a/src/core/mount.c
+++ b/src/core/mount.c
@@ -1768,7 +1768,18 @@ static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents,
if (!mount->is_mounted) {
- /* A mount point is gone */
+ /* A mount point is not around right now. It
+ * might be gone, or might never have
+ * existed. */
+
+ if (mount->from_proc_self_mountinfo &&
+ mount->parameters_proc_self_mountinfo.what) {
+
+ /* Remember that this device might just have disappeared */
+ if (set_ensure_allocated(&gone, &string_hash_ops) < 0 ||
+ set_put(gone, mount->parameters_proc_self_mountinfo.what) < 0)
+ log_oom(); /* we don't care too much about OOM here... */
+ }
mount->from_proc_self_mountinfo = false;
@@ -1785,14 +1796,6 @@ static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents,
break;
}
- /* Remember that this device might just have disappeared */
- if (mount->parameters_proc_self_mountinfo.what) {
-
- if (set_ensure_allocated(&gone, &string_hash_ops) < 0 ||
- set_put(gone, mount->parameters_proc_self_mountinfo.what) < 0)
- log_oom(); /* we don't care too much about OOM here... */
- }
-
} else if (mount->just_mounted || mount->just_changed) {
/* A mount point was added or changed */
@@ -1820,13 +1823,15 @@ static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents,
mount_set_state(mount, mount->state);
break;
}
+ }
- if (mount->parameters_proc_self_mountinfo.what) {
+ if (mount->is_mounted &&
+ mount->from_proc_self_mountinfo &&
+ mount->parameters_proc_self_mountinfo.what) {
- if (set_ensure_allocated(&around, &string_hash_ops) < 0 ||
- set_put(around, mount->parameters_proc_self_mountinfo.what) < 0)
- log_oom();
- }
+ if (set_ensure_allocated(&around, &string_hash_ops) < 0 ||
+ set_put(around, mount->parameters_proc_self_mountinfo.what) < 0)
+ log_oom();
}
/* Reset the flags for later calls */