[OE-core] [oe-commits] Laurentiu Palcu : update-rc.d: check also that symlinks are valid

[Martin Jansa]

On Wed, Jan 16, 2013 at 12:54:28PM +0000, git at git.openembedded.org wrote:
> Module: openembedded-core.git
> Branch: master
> Commit: 4b63e73422ea25aba1bde0beddb02bc04948e13c
> URL:    http://git.openembedded.org/?p=openembedded-core.git&a=commit;h=4b63e73422ea25aba1bde0beddb02bc04948e13c
> 
> Author: Laurentiu Palcu <laurentiu.palcu at intel.com>
> Date:   Wed Jan 16 13:58:55 2013 +0200
> 
> update-rc.d: check also that symlinks are valid
> 

now every update-rc.d call on target fails with
/usr/sbin/update-rc.d: line 151: [: argument expected

> Running:
> 
> update-rc.d -r /path/to/target/rootfs basename defaults
> 
> at do_rootfs time in package postinstall stage, when
> /path/to/target/rootfs/etc/init.d/basename is a symlink and points to some path
> on target (for example: /etc/init.d/basename.some_package), would fail and the
> postinstall execution would be postponed for first boot, on target.
> 
> This patch adds the posibility to verify whether the file the symlink
> points to actually exists in the target rootfs.
> 
> [YOCTO #3716]
> 
> Signed-off-by: Laurentiu Palcu <laurentiu.palcu at intel.com>
> Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
> 
> ---
> 
>  .../update-rc.d/check-if-symlinks-are-valid.patch  |   53 ++++++++++++++++++++
>  meta/recipes-core/update-rc.d/update-rc.d_0.7.bb   |    6 ++-
>  2 files changed, 57 insertions(+), 2 deletions(-)
> 
> diff --git a/meta/recipes-core/update-rc.d/update-rc.d/check-if-symlinks-are-valid.patch b/meta/recipes-core/update-rc.d/update-rc.d/check-if-symlinks-are-valid.patch
> new file mode 100644
> index 0000000..4476e91
> --- /dev/null
> +++ b/meta/recipes-core/update-rc.d/update-rc.d/check-if-symlinks-are-valid.patch
> @@ -0,0 +1,53 @@
> +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 at 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
> diff --git a/meta/recipes-core/update-rc.d/update-rc.d_0.7.bb b/meta/recipes-core/update-rc.d/update-rc.d_0.7.bb
> index 0aac5fa..bfcbd97 100644
> --- a/meta/recipes-core/update-rc.d/update-rc.d_0.7.bb
> +++ b/meta/recipes-core/update-rc.d/update-rc.d_0.7.bb
> @@ -5,13 +5,15 @@ SECTION = "base"
>  LICENSE = "GPLv2+"
>  LIC_FILES_CHKSUM = "file://update-rc.d;beginline=5;endline=15;md5=148a48321b10eb37c1fa3ee02b940a75"
>  
> -PR = "r4"
> +PR = "r5"
>  
>  # Revision corresponding to tag update-rc.d_0.7
>  SRCREV = "eca680ddf28d024954895f59a241a622dd575c11"
>  
>  SRC_URI = "git://github.com/philb/update-rc.d.git;protocol=git \
> -           file://add-verbose.patch;"
> +           file://add-verbose.patch \
> +           file://check-if-symlinks-are-valid.patch \
> +          "
>  
>  S = "${WORKDIR}/git"
>  
> 
> 
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-- 
Martin 'JaMa' Jansa     jabber: Martin.Jansa at gmail.com
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