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udev-cache: invalidate on rules.d changes

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Presently, the cache is not regenerated if udev rules are modified,
which may cause the cache to preserve an old configuration. To fix,
include the size, mtime, and filename of all udev rules in the system
configuration.

This change requires `stat`. If busybox supplies stat,
CONFIG_FEATURE_STAT_FORMAT must be enabled.

(From OE-Core rev: 8847e33b12171a21b7c7e1241198080ad9ef9284)

Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Tollerton
2014-01-24 00:44:01 -06:00
committed by Richard Purdie
parent 7c522ced96
commit 88c184a9bf
2 changed files with 11 additions and 0 deletions
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meta/recipes-core/udev/udev/init
+6
View File
@@ -22,9 +22,14 @@ DEVCACHE_REGEN="/dev/shm/udev-regen" # create to request cache regen
CMP_FILE_LIST="/proc/version /proc/cmdline /proc/devices"
[ -f /proc/atags ] && CMP_FILE_LIST="$CMP_FILE_LIST /proc/atags"
# List of files whose metadata (size/mtime/name) will be included in cached
# system state.
META_FILE_LIST="lib/udev/rules.d/* etc/udev/rules.d/*"
# Command to compute system configuration.
sysconf_cmd () {
cat -- $CMP_FILE_LIST
stat -L -c '%s %Y %n' -- $META_FILE_LIST | awk -F/ '{print $1 " " $NF;}'
}
[ -f /etc/default/udev-cache ] && . /etc/default/udev-cache
@@ -76,6 +81,7 @@ case "$1" in
cat <<EOF
udev: Not using udev cache because of changes detected in the following files:
udev: $CMP_FILE_LIST
udev: $META_FILE_LIST
udev: The udev cache will be regenerated. To identify the detected changes,
udev: compare the cached sysconf at $SYSCONF_CACHED
udev: against the current sysconf at $SYSCONF_TMP
meta/recipes-core/udev/udev/udev-cache
+5
View File
@@ -25,9 +25,14 @@ DEVCACHE_REGEN="/dev/shm/udev-regen" # create to request cache regen
CMP_FILE_LIST="/proc/version /proc/cmdline /proc/devices"
[ -f /proc/atags ] && CMP_FILE_LIST="$CMP_FILE_LIST /proc/atags"
# List of files whose metadata (size/mtime/name) will be included in cached
# system state.
META_FILE_LIST="lib/udev/rules.d/* etc/udev/rules.d/*"
# Command to compute system configuration.
sysconf_cmd () {
cat -- $CMP_FILE_LIST
stat -L -c '%s %Y %n' -- $META_FILE_LIST | awk -F/ '{print $1 " " $NF;}'
}
[ -f /etc/default/udev-cache ] && . /etc/default/udev-cache