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dracut-functions: use /proc/self/mountinfo, instead of /proc/mounts

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1. it's easier to get the major:minor
2. it's more failsafe in a chroot() (rescue CD case)
This commit is contained in:
Harald Hoyer 2010-08-05 18:59:51 +02:00
parent 0493f9c849
commit 029f2691f8
1 changed files with 4 additions and 9 deletions
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dracut-functions
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@ -118,15 +118,10 @@ get_fs_uuid() (
# finds the major:minor of the block device backing the root filesystem.
find_block_device() {
local rootdev blkdev fs type opts misc
while read blkdev fs type opts misc; do
[[ $blkdev = rootfs ]] && continue # skip rootfs entry
[[ $fs = $1 ]] && { rootdev=$blkdev; break; } # we have a winner!
done < /proc/mounts
[[ -b $rootdev ]] || return 1 # oops, not a block device.
# get major/minor for the device
ls -nLl "$rootdev" | \
(read x x x x maj min x; maj=${maj//,/}; echo $maj:$min)
local majmin rootdev blkdev fs type opts misc
while read a b majmin c mpt opts d fs type opts misc; do
[[ $mpt = $1 ]] && { echo $majmin; break; } # we have a winner!
done < /proc/self/mountinfo
}
find_root_block_device() { find_block_device /; }