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util-linux: Add mount lock patch

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Add the mount lock patch that moves the lock file from the potentially R/O
/etc, to the R/W /var/lock directory.

This resolves a problem when mounting when / (and /etc) is mounted R/O.

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
This commit is contained in:
Mark Hatle
2011-02-03 21:36:21 -06:00
committed by Richard Purdie
parent fdb6a23ea0
commit d372eadfd3
2 changed files with 28 additions and 2 deletions
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meta/recipes-core/util-linux/util-linux-2.17.2/util-linux-ng-2.16-mount_lock_path.patch
+25
View File
@@ -0,0 +1,25 @@
The FHS indicates that /etc must be capable of being mounted R/O.
The FHS also indicates that lock files belong in /var/lock, and /var must
be R/W as soon as possible during boot.
This patch moves the mtab lock file from the potentially R/O /etc, to the
R/W /var/lock area. This lock file is used when mounting disks and making
other mount adjustments. The _PATH_MOUNTED_TMP is not adjusted, as failing
to write to this file does not cause any functional limitations.
(Note, if /etc is R/O, then /etc/mtab should be a symlink to /proc/mounts)
Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
--- util-linux-ng-2.16/include/pathnames.h.orig
+++ util-linux-ng-2.16/include/pathnames.h
@@ -90,7 +90,7 @@
# endif
#endif
-#define _PATH_MOUNTED_LOCK _PATH_MOUNTED "~"
+#define _PATH_MOUNTED_LOCK "/var/lock/mtab~"
#define _PATH_MOUNTED_TMP _PATH_MOUNTED ".tmp"
#ifndef _PATH_DEV