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author | freaj <freaj@riseup.net> | 2015-03-23 11:27:55 +0100 |
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committer | freaj <freaj@riseup.net> | 2015-03-23 11:27:55 +0100 |
commit | 0161d0dd7de853da1f86bb3b6f27adf25977c785 (patch) | |
tree | 496f2da02a919ddf4fee0001c274237f72835fe2 /pcr/openrc-base/device-mapper.rc-2.02.105-r2 | |
parent | 1846e57b8e352d4f7fa711f32206375d318e93d8 (diff) | |
download | abslibre-0161d0dd7de853da1f86bb3b6f27adf25977c785.tar.gz abslibre-0161d0dd7de853da1f86bb3b6f27adf25977c785.tar.bz2 abslibre-0161d0dd7de853da1f86bb3b6f27adf25977c785.zip |
openrc-base: add missing files
Diffstat (limited to 'pcr/openrc-base/device-mapper.rc-2.02.105-r2')
-rw-r--r-- | pcr/openrc-base/device-mapper.rc-2.02.105-r2 | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/pcr/openrc-base/device-mapper.rc-2.02.105-r2 b/pcr/openrc-base/device-mapper.rc-2.02.105-r2 new file mode 100644 index 000000000..56e75037e --- /dev/null +++ b/pcr/openrc-base/device-mapper.rc-2.02.105-r2 @@ -0,0 +1,147 @@ +#!/sbin/runscript +# Copyright 1999-2014 Gentoo Foundation +# Distributed under the terms of the GNU General Public License v2 +# $Header: /var/cvsroot/gentoo-x86/sys-fs/lvm2/files/device-mapper.rc-2.02.105-r2,v 1.1 2014/02/02 19:52:34 robbat2 Exp $ + +depend() { + # As of .67-r1, we call ALL lvm start/stop scripts with --sysinit, that + # means dmeventd is NOT notified, as it cannot be safely running + before dmeventd checkfs fsck + after modules +} + +dm_in_proc() { + local retval=0 + for x in devices misc ; do + grep -qs 'device-mapper' /proc/${x} + retval=$((${retval} + $?)) + done + return ${retval} +} + +# char **build_dmsetup_command(volume) +# +# Returns complete dmsetup command given single volume name +build_dmsetup_command() { + local count dmsetup_cmd + + # Number of lines mentioning volume name + count=$(grep -v -e '^[[:space:]]*\(#\|$\)' /etc/dmtab | grep -c ${1}) + + # If there's just one line: + if [ ${count} -eq 1 ] ; then + echo "echo $(grep -v -e '^[[:space:]]*\(#\|$\)' /etc/dmtab | \ + grep ${1} | awk '{$1=""; print $0}') | /sbin/dmsetup create ${1}" + + # For all cases with more lines: + elif [ ${count} -gt 1 ] ; then + for c in $( seq 1 ${count} ) ; do + if [ ${c} -eq 1 ] ; then + # Heavy escaping in awk-statement because we cannot use apostrophes + dmsetup_cmd="echo -e $(grep -v -e '^[[:space:]]*\(#\|$\)' /etc/dmtab | \ + grep ${1} | awk NR==${c}\ \{\$1=\"\"\;\ print\ \$0\})" + else + # Append starting with newline + dmsetup_cmd="${dmsetup_cmd}\\\\n \ + $(grep -v -e '^[[:space:]]*\(#\|$\)' /etc/dmtab | \ + grep ${1} | awk NR==${c}\ \{\$1=\"\"\;\ print\ \$0\})" + fi + done + echo "${dmsetup_cmd} | /sbin/dmsetup create ${1}" + fi + + return 0 +} + +# char **get_new_dm_volumes(void) +# +# Return unique volumes from /etc/dmtab +get_new_dm_volumes() { + local volume + + # Filter comments and blank lines + grep -v -e '^[[:space:]]*\(#\|$\)' /etc/dmtab | \ + awk '{ print $1 }' | \ + uniq | \ + while read volume ; do + # If it exists, skip it + dmvolume_exists "${volume%:}" && continue + + echo "${volume%:}" + done + + return 0 +} + +# int dmvolume_exists(volume) +# +# Return true if volume exists in DM table +dmvolume_exists() { + local x line volume=$1 + + [ -z "${volume}" ] && return 1 + + /sbin/dmsetup ls 2>/dev/null | \ + while read line ; do + for x in ${line} ; do + # the following conditonal return only breaks out + # of the while loop, as it is running in a pipe. + [ "${x}" = "${volume}" ] && return 1 + # We only want to check the volume name + break + done + done + + # if 1 was returned from the above loop, then indicate that + # volume exists + [ $? = 1 ] && return 0 + + # otherwise the loop exited normally and the volume does not + # exist + return 1 +} + +# int is_empty_dm_volume(volume) +# +# Return true if the volume exists in DM table, but is empty/non-valid +is_empty_dm_volume() { + local table volume=$1 + + set -- $(/sbin/dmsetup table 2>/dev/null | grep -e "^${volume}:") + [ "${volume}" = "$1" -a -z "$2" ] +} + + +start() { + if [ -e /proc/modules ] && ! dm_in_proc ; then + modprobe dm-mod 2>/dev/null + fi + # Ensure the dirs exist for locking and running + checkpath -q -d -m 0700 -o root:root /run/lvm /run/lock/lvm + + local x volume + + if [ -x /sbin/dmsetup -a -c /dev/mapper/control -a -f /etc/dmtab ] ; then + [ -n "$(get_new_dm_volumes)" ] && \ + einfo " Setting up device-mapper volumes:" + + get_new_dm_volumes | \ + while read x ; do + [ -n "${x}" ] || continue + + volume="${x##* }" + + ebegin " Creating volume: ${volume}" + if ! eval $(build_dmsetup_command ${volume}) >/dev/null 2>/dev/null ; then + eend 1 " Error creating volume: ${volume}" + # dmsetup still adds an empty volume in some cases, + # so lets remove it + is_empty_dm_volume "${volume}" && \ + /sbin/dmsetup remove "${volume}" 2>/dev/null + else + eend 0 + fi + done + fi +} + |