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os-prober/os-prober-btrfsfix.patch
Andrei Borzenkov 8f472cc59a Accepting request 459143 from home:michael-chang:branches:Base:System
- Version bump to 1.74:
  * Add support for Mageia
  * Improve logging of mounting and setting partitions to ro/rw
  * Use a read-only device-mapper entry if possible rather than setting the
    underlying device to read-only.
    Note that this introduces a dependency on dmsetup on Linux architectures.
  * Remove the "blockdev --setro" code path entirely, since the read-only
    device-mapper arrangement supersedes it and should be safer
  * Make the yaboot parser more tolerant about the syntax of "append" options
  * Disable debugging if OS_PROBER_DISABLE_DEBUG is set
  * Replace basename/dirname with shell string processing
  * Fix typos in README
  * Add Devuan detection
  * Work harder to avoid trying to mount extended partitions
  * Drop " (loader)" suffixes on Microsoft operating systems
  * Add support for 4MLinux
  * Use HTTPS for Vcs-* URLs, and link to cgit rather than gitweb.
- Rediff
 * os-prober-1.49-grub2-mount.patch
 * os-prober-EFI-openSUSEfy.patch
 * os-prober-btrfs-always-detect-default.patch
 * os-prober-btrfsfix.patch
 * os-prober-dont-load-all-fs-module-and-dont-test-mount.patch
 * os-prober-fix-btrfs-subvol-mounted-tests.patch
 * os-prober-linux-distro-avoid-expensive-ld-file-test.patch
 * os-prober-linux-distro-parse-os-release.patch
- Remove patches; fixed on upstream release
 * os-prober-call-dmraid-once.patch
 * os-prober-1.49-skip-LVM2_member.patch

OBS-URL: https://build.opensuse.org/request/show/459143
OBS-URL: https://build.opensuse.org/package/show/Base:System/os-prober?expand=0&rev=73
2017-02-20 11:06:06 +00:00

419 lines
13 KiB
Diff

Index: os-prober/common.sh
===================================================================
--- os-prober.orig/common.sh
+++ os-prober/common.sh
@@ -155,6 +155,7 @@ parse_proc_mounts () {
done
}
+# add forth parameter to pickup btrfs subvol info
parsefstab () {
while read -r line; do
case "$line" in
@@ -165,12 +166,22 @@ parsefstab () {
set -f
set -- $line
set +f
- printf '%s %s %s\n' "$1" "$2" "$3"
+ printf '%s %s %s %s\n' "$1" "$2" "$3" "$4"
;;
esac
done
}
+#check_btrfs_mounted $bootsv $bootuuid)
+check_btrfs_mounted () {
+ bootsv="$1"
+ bootuuid="$2"
+ bootdev=$(blkid | grep "$bootuuid" | cut -d ':' -f 1)
+ bindfrom=$(grep " btrfs " /proc/self/mountinfo |
+ grep " $bootdev " | grep " /$bootsv " | cut -d ' ' -f 5)
+ printf "%s" "$bindfrom"
+}
+
unescape_mount () {
printf %s "$1" | \
sed 's/\\011/ /g; s/\\012/\n/g; s/\\040/ /g; s/\\134/\\/g'
Index: os-prober/linux-boot-prober
===================================================================
--- os-prober.orig/linux-boot-prober
+++ os-prober/linux-boot-prober
@@ -5,16 +5,143 @@ set -e
newns "$@"
require_tmpdir
+ERR="n"
+
+tmpmnt=/var/lib/os-prober/mount
+if [ ! -d "$tmpmnt" ]; then
+ mkdir "$tmpmnt"
+fi
+
+mounted=
+bootmnt=
+bootsv=
+bootuuid=
grep "^/dev/" /proc/mounts | parse_proc_mounts >"$OS_PROBER_TMP/mounted-map" || true
-partition="$1"
+if [ -z "$1" ]; then
+ ERR=y
+elif [ "$1" = btrfs -a -z "$2" ]; then
+ ERR=y
+elif [ "$1" = btrfs -a -z "$3" ]; then
+ ERR=y
+elif [ "$1" = btrfs ]; then
+ type=btrfs
+ echo "$2" | grep -q "^UUID=" || ERR=y
+ echo "$3" | grep -q "^subvol=" || ERR=y
+ export "$2"
+ export "$3"
+ partition=$(blkid | grep "$UUID" | cut -d ':' -f 1 | tr '\n' ' ' | cut -d ' ' -f 1)
+ debug "btrfs: partition=$partition, UUID=$UUID, subvol=$subvol"
+else
+ partition="$1"
+ type=other
+fi
-if [ -z "$partition" ]; then
+if [ "x$ERR" != xn ]; then
echo "usage: linux-boot-prober partition" >&2
+ echo " linux-boot-prober partition | btrfs UUID=<> subvol=<>" >&2
exit 1
fi
+if [ "$type" = btrfs ]; then
+ # handle all of the btrfs stuff here
+ if [ ! -e "/proc/self/mountinfo" ]; then
+ warn "/proc/self/mountinfo does not exist, exiting"
+ umount "$tmpmnt" 2>/dev/null
+ rmdir "$tmpmnt" 2>/dev/null
+ exit 1
+ fi
+ mpoint=$(grep "btrfs" /proc/self/mountinfo | grep " /$subvol " | grep " $partition " | cut -d ' ' -f 5)
+ if [ "$mpoint" = "/" ]; then
+ warn "specifying active root not valid, exiting"
+ umount "$tmpmnt" 2>/dev/null
+ rmdir "$tmpmnt" 2>/dev/null
+ exit 1
+ fi
+ if [ "$mpoint" = "$tmpmnt" ]; then
+ warn "btrfs subvol=$subvool, UUID=$UUID, already mounted on $tmpmnt **ERROR**"
+ umount "$tmpmnt" 2>/dev/null
+ rmdir "$tmpmnt" 2>/dev/null
+ exit 1
+ fi
+ if [ -z "$mpoint" ]; then
+ # mount the btrfs root
+ if ! mount -o subvol=$subvol -t btrfs -U $UUID "$tmpmnt" 2>/dev/null; then
+ warn "error mounting btrfs subvol=$subvol UUID=$UUID"
+ umount "$tmpmnt/boot" 2>/dev/null
+ umount "$tmpmnt" 2>/dev/null
+ rmdir "$tmpmnt" 2>/dev/null
+ exit 1
+ fi
+ else
+ # bind-mount
+ if ! mount -o bind "$mpoint" "$tmpmnt" 2>/dev/null; then
+ warn "error mounting btrfs bindfrom=$mpoint subvol=$subvol UUID=$UUID"
+ umount "$tmpmnt/boot" 2>/dev/null
+ umount "$tmpmnt" 2>/dev/null
+ rmdir "$tmpmnt" 2>/dev/null
+ exit 1
+ fi
+ fi
+ debug "mounted btrfs $partition, subvol=$subvol on $tmpmnt"
+ if [ ! -e "$tmpmnt/etc/fstab" ]; then
+ warn "btrfs subvol=$subvol not root"
+ umount "$tmpmnt" 2>/dev/null
+ rmdir "$tmpmnt" 2>/dev/null
+ exit 1
+ fi
+ bootmnt=$(parsefstab < "$tmpmnt/etc/fstab" | grep " /boot ") || true
+ if [ -z "$bootmnt" ]; then
+ # /boot is part of the root
+ bootpart="$partition"
+ bootsv="$subvol"
+ elif echo "$bootmnt" | cut -d ' ' -f 3 | grep -q "btrfs"; then
+ # separate btrfs /boot subvolume
+ bootsv=$(echo "$bootmnt" | cut -d ' ' -f 4 | grep "^subvol=" | sed "s/subvol=//" )
+ bootuuid=$(echo "$bootmnt" | cut -d ' ' -f 1 | grep "^UUID=" | sed "s/UUID=//" )
+ debug "mounting btrfs $tmpmnt/boot UUID=$bootuuid subvol=$bootsv"
+ bindfrom=$(check_btrfs_mounted $bootsv $bootuuid)
+ if [ -n "$bindfrom" ]; then
+ # already mounted some place
+ if ! mount -o bind $bindfrom "$tmpmnt/boot" 2>/dev/null; then
+ warn "error bind mounting btrfs boot subvol=$bootsv, from=$bindfrom"
+ umount "$tmpmnt/boot" 2>/dev/null
+ umount "$tmpmnt" 2>/dev/null
+ rmdir "$tmpmnt" 2>/dev/null
+ exit 1
+ fi
+ elif ! mount -o subvol=$bootsv -t btrfs -U $bootuuid "$tmpmnt/boot" 2>/dev/null; then
+ warn "error mounting btrfs boot partition subvol=$bootsv, UUID=$bootuuid"
+ umount "$tmpmnt/boot" 2>/dev/null
+ umount "$tmpmnt" 2>/dev/null
+ rmdir "$tmpmnt" 2>/dev/null
+ exit 1
+ fi
+ bootpart=$(grep " btrfs " /proc/self/mountinfo | grep " /$bootsv " | cut -d ' ' -f 10)
+ else
+ # non-btrfs partition or logical volume
+ linux_mount_boot $partition $tmpmnt
+ bootpart="${mountboot%% *}"
+ bootsv=
+ fi
+
+ test="/usr/lib/linux-boot-probes/mounted/40grub2"
+ if [ -f $test ] && [ -x $test ]; then
+ debug "running $test $partition $bootpart $tmpmnt $type $subvol $bootsv"
+ if $test "$partition" "$bootpart" "$tmpmnt" "$type" "$subvol" "$bootsv"; then
+ debug "$test succeeded"
+ fi
+ fi
+ umount "$tmpmnt/boot" 2>/dev/null || true
+ if ! umount "$tmpmnt" 2>/dev/null; then
+ warn "problem umount $tmpmnt"
+ fi
+ rmdir "$tmpmnt" 2>/dev/null || true
+
+ exit 0
+fi
+
if ! mapped="$(mapdevfs "$partition")"; then
log "Device '$partition' does not exist; skipping"
continue
Index: os-prober/linux-boot-probes/mounted/common/40grub2
===================================================================
--- os-prober.orig/linux-boot-probes/mounted/common/40grub2
+++ os-prober/linux-boot-probes/mounted/common/40grub2
@@ -2,17 +2,27 @@
. /usr/share/os-prober/common.sh
set -e
+# add support for btrfs with no separate /boot
+# that is, rootsv = bootsv
partition="$1"
bootpart="$2"
mpoint="$3"
type="$4"
+rootsv="$5"
+bootsv="$6"
found_item=0
entry_result () {
+ if [ "x$type" = "xbtrfs" -a "$rootsv" = "$bootsv" ]; then
+ # trim off the leading subvol
+ kernelfile=$(echo "$kernel" | cut -d '/' -f 2- | cut -d '/' -f 2-)
+ else
+ kernelfile=$kernel
+ fi
if [ "$ignore_item" = 0 ] && \
[ -n "$kernel" ] && \
- [ -e "$mpoint/$kernel" ]; then
+ [ -e "$mpoint/$kernelfile" ]; then
result "$rootpart:$bootpart:$title:$kernel:$initrd:$parameters"
found_item=1
fi
Index: os-prober/os-prober
===================================================================
--- os-prober.orig/os-prober
+++ os-prober/os-prober
@@ -79,6 +79,9 @@ partitions () {
echo "$(LVM_SUPPRESS_FD_WARNINGS=1 log_output lvs --noheadings --separator : -o vg_name,lv_name |
sed "s|-|--|g;s|^[[:space:]]*\(.*\):\(.*\)$|/dev/mapper/\1-\2|")"
fi
+
+ # now lets make sure we got all of the btrfs partitions and disks
+ blkid | grep btrfs | cut -d ':' -f 1
}
parse_proc_swaps () {
@@ -137,6 +140,8 @@ if [ -f /proc/mdstat ] ; then
grep "^md" /proc/mdstat | parse_proc_mdstat >"$OS_PROBER_TMP/raided-map" || true
fi
+: >"$OS_PROBER_TMP/btrfs-vols"
+
for partition in $(partitions); do
if ! mapped="$(mapdevfs "$partition")"; then
log "Device '$partition' does not exist; skipping"
@@ -155,7 +160,26 @@ for partition in $(partitions); do
continue
fi
- if ! grep -q "^$mapped " "$OS_PROBER_TMP/mounted-map" ; then
+ # do btrfs processing here; both mounted and unmounted will
+ # be handled by 50mounted-tests so we can do a subvol only once.
+ type=$(blkid -o value -s TYPE $mapped || true)
+ if [ "$type" = btrfs ]; then
+ uuid=$(blkid -o value -s UUID $mapped)
+ if grep -q "^$uuid" "$OS_PROBER_TMP/btrfs-vols" ; then
+ continue
+ fi
+ debug "btrfs volume uuid=$uuid partition=$partition"
+ echo "$uuid" >>"$OS_PROBER_TMP/btrfs-vols"
+ test="/usr/lib/os-probes/50mounted-tests"
+ if [ -f "$test" ] && [ -x "$test" ]; then
+ debug "running $test on btrfs $partition"
+ if "$test" btrfs "$uuid" "$partition"; then
+ debug "os detected by $test"
+ continue
+ fi
+ fi
+
+ elif ! grep -q "^$mapped " "$OS_PROBER_TMP/mounted-map" ; then
for test in /usr/lib/os-probes/*; do
if [ -f "$test" ] && [ -x "$test" ]; then
debug "running $test on $partition"
Index: os-prober/os-probes/common/50mounted-tests
===================================================================
--- os-prober.orig/os-probes/common/50mounted-tests
+++ os-prober/os-probes/common/50mounted-tests
@@ -19,7 +19,19 @@ do_unmount() {
rmdir "$tmpmnt" || true
}
-types="$(fs_type "$partition")"
+if [ "x$1" = xbtrfs ]; then
+ types=btrfs
+ if [ -z "$2" -o -z "$3" ]; then
+ debug "missing btrfs parameters, exiting"
+ exit 1
+ fi
+ UUID="$2"
+ BTRFSDEV="$3"
+else
+ partition="$1"
+ types="$(fs_type "$partition")"
+fi
+
if [ "$types" = NOT-DETECTED ]; then
debug "$1 type not recognised; skipping"
exit 0
@@ -66,6 +78,76 @@ if [ ! -d "$tmpmnt" ]; then
fi
mounted=
+
+# all btrfs processing here. Handle both unmounted and
+# mounted subvolumes.
+if [ "$types" = btrfs ]; then
+ partition="$BTRFSDEV"
+ debug "begin btrfs processing for $UUID"
+ # note that the btrfs volume must not be mounted ro
+ if mount -t btrfs -U "$UUID" "$tmpmnt" 2>/dev/null; then
+ debug "btrfs volume $UUID mounted"
+ else
+ warn "cannot mount btrfs volume $UUID, exiting"
+ rmdir "$tmpmnt" || true
+ exit 1
+ fi
+ # besides regular subvols, get ro and snapshot so thet can be excluded
+ subvols=$(btrfs subvolume list "$tmpmnt" | cut -d ' ' -f 9)
+ rosubvols=$(btrfs subvolume list -r "$tmpmnt" | cut -d ' ' -f 9)
+ sssubvols=$(btrfs subvolume list -s "$tmpmnt" | cut -d ' ' -f 14)
+ if ! umount "$tmpmnt"; then
+ warn "failed to umount btrfs volume on $tmpmnt"
+ rmdir "$tmpmnt" || true
+ exit 1
+ fi
+ if [ -z "$subvols" ]; then
+ debug "no subvols found on btrfs volume $UUID"
+ exit 1
+ fi
+ found=
+ for subvol in $subvols; do
+ debug "begin btrfs processing for $UUID subvol=$subvol"
+ if echo "$rosubvols" | grep -q -x "$subvol"; then
+ continue
+ fi
+ if echo "$sssubvols" | grep -q -x "$subvol"; then
+ continue
+ fi
+ mounted=
+ mpoint="$(grep btrfs /proc/self/mountinfo | grep "$partition " | grep "/$subvol " | cut -d ' ' -f 5)"
+ if [ -n "$mpoint" ]; then
+ if [ "x$mpoint" = "x/" ]; then
+ continue # this is the root for the running system
+ fi
+ mounted=1
+ else
+ # again, do not mount btrfs ro
+ mount -t btrfs -o subvol="$subvol" -U "$UUID" "$tmpmnt"
+ mpoint="$tmpmnt"
+ fi
+ test="/usr/lib/os-probes/mounted/90linux-distro"
+ if [ -f "$test" ] && [ -x "$test" ]; then
+ debug "running subtest $test"
+ if "$test" "$partition" "$mpoint" btrfs "UUID=$UUID" "subvol=$subvol"; then
+ debug "os found by subtest $test on subvol $subvol"
+ found=1
+ fi
+ fi
+ if [ -z "$mounted" ]; then
+ if ! umount "$tmpmnt"; then
+ warn "failed to umount $tmpmnt"
+ fi
+ fi
+ done
+ rmdir "$tmpmnt" || true
+ if [ "$found" ]; then
+ exit 0
+ else
+ exit 1
+ fi
+fi
+
if type grub2-mount >/dev/null 2>&1 && \
type grub2-probe >/dev/null 2>&1 && \
grub2-mount "$partition" "$tmpmnt" 2>/dev/null; then
Index: os-prober/os-probes/mounted/common/90linux-distro
===================================================================
--- os-prober.orig/os-probes/mounted/common/90linux-distro
+++ os-prober/os-probes/mounted/common/90linux-distro
@@ -7,6 +7,8 @@ set -e
partition="$1"
dir="$2"
type="$3"
+uuid="$4"
+subvol="$5"
# This test is inaccurate, but given separate / and /boot partitions and the
# fact that only some architectures have ld-linux.so, I can't see anything
@@ -143,7 +145,11 @@ if (ls "$dir"/lib*/ld*.so* && [ -d "$dir
fi
label="$(count_next_label "$short")"
- result "$partition:$long:$label:linux"
+ if [ "x$type" = "xbtrfs" -a "x$uuid" != "x" -a "x$subvol" != "x" ]; then
+ result "$partition:$long:$label:linux:$type:$uuid:$subvol"
+ else
+ result "$partition:$long:$label:linux"
+ fi
exit 0
else
exit 1
Index: os-prober/README.btrfs
===================================================================
--- /dev/null
+++ os-prober/README.btrfs
@@ -0,0 +1,15 @@
+BTRFS is a new filesystem which combines the filesystem with logical volume
+management (subvolumes). For further information, see:
+ https://btrfs.wiki.kernel.org/index.php/Main_Page
+ https://btrfs.wiki.kernel.org/index.php/FAQ
+
+In order to support BTRFS, a number of changes were necessary to os-prober,
+os-probes/common/50mounted-tests, os-probes/mounted/common/90linux-distro,
+linux-boot-prober, and linux-boot-probes/common/50mounted-tests.
+
+The biggest impact will be to grub2 where there is additional information
+output by os-prober and where, if a BTRFS subvolume is being used for root,
+the parameters for linux-boot-prober have changed.
+
+Sun 30 Dec 2012 11:49:52 AM EST Gene Czarcinski <gene@czarc.net>
+