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