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Check if symlinks are valid
When using root option and $initd/$bn is a symlink, the script would fail because
the symlink points to a path on target. For example:
/path/to/target/rootfs/etc/init.d/syslog -> /etc/init.d/syslog.busybox
Hence, [ -f /path/to/target/rootfs/etc/init.d/syslog ] condition would return
false.
This patch adds the posibility to check whether the file the symlink points to
actually exists in rootfs path and then continue.
Upstream-Status: Pending
Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
Index: git/update-rc.d
===================================================================
--- git.orig/update-rc.d 2013-01-16 12:12:58.349814356 +0200
+++ git/update-rc.d 2013-01-16 13:02:42.490864939 +0200
@@ -147,13 +147,29 @@
bn=$1
shift
+sn=$initd/$bn
+if [ -L "$sn" -a -n $root ]; then
+ readlink=$(which readlink)
+
+ if [ -n $readlink ]; then
+ sn=$($readlink "$sn")
+ case "$sn" in
+ /*) sn=${root}${sn} ;;
+ *) sn=$initd/$sn ;;
+ esac
+ else
+ echo "update-rc.d: readlink tool not present, cannot check whether \
+ $sn symlink points to a valid file." >&2
+ fi
+fi
+
if [ $1 != "remove" ]; then
- if [ ! -f "$initd/$bn" ]; then
+ if [ ! -f "$sn" ]; then
echo "update-rc.d: $initd/$bn: file does not exist" >&2
exit 1
fi
else
- if [ -f "$initd/$bn" ]; then
+ if [ -f "$sn" ]; then
if [ $force -eq 1 ]; then
echo "update-rc.d: $initd/$bn exists during rc.d purge (continuing)" >&2
else
|