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Fix extroot by UUID

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Extroot works fine when the target device is specified by a path. It fails
however if the device is specified by UUID (the target partition gets mounted
much later by hotplug hooks). This is because the blkid command is no longer
compiled into BusyBox (since changeset [1]) so it's unavailable for the
preinit phase.

The closest bug report I was able to find is [2], although the reporting person
mentions that /tmp/overlay-disabled showed up which wasn't there in my case.

This patch sets PATH and LD_LIBRARY_PATH environment variables so that the
blkid command installed on the target device can be used by that particular
preinit script.

[1] https://dev.openwrt.org/changeset/26245
[2] https://dev.openwrt.org/ticket/10653

Signed-off-by: Jaroslaw Swierczynski <jarek1701@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@32567 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
jow 2012-07-01 11:06:32 +00:00
parent 9f93ad9ef0
commit b6a1b5d84d
1 changed files with 8 additions and 0 deletions
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8
package/block-mount/files/50_determine_usb_root
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@ -9,6 +9,8 @@ determine_external_root() {
pi_include /lib/functions/mount.sh
local OLD_UCI_CONFIG_DIR="$UCI_CONFIG_DIR"
local OLD_PATH="$PATH"
local OLD_LD_LIBRARY_PATH="$LD_LIBRARY_PATH"
set_jffs_mp
determine_root_device
@ -19,6 +21,9 @@ determine_external_root() {
UCI_CONFIG_DIR="/tmp/overlay/etc/config"
ER_IS_SQUASHFS=true
ER_OVERLAY_PREFIX="/tmp/overlay"
PATH=$ER_OVERLAY_PREFIX/sbin:$PATH
LD_LIBRARY_PATH=$ER_OVERLAY_PREFIX/usr/lib:$LD_LIBRARY_PATH
export PATH LD_LIBRARY_PATH
fi
# For squashfs on firstboot root_device will be tmpfs for the ramoverlay,
@ -51,6 +56,9 @@ determine_external_root() {
}
}
UCI_CONFIG_DIR="$OLD_UCI_CONFIG_DIR"
PATH="$OLD_PATH"
LD_LIBRARY_PATH="$OLD_LD_LIBRARY_PATH"
export PATH LD_LIBRARY_PATH
}
boot_hook_add preinit_mount_root determine_external_root