1 # Copyright (C) 2011 GRNET S.A.
2 # Copyright (C) 2007, 2008, 2009 Google Inc.
4 # This program is free software; you can redistribute it and/or modify
5 # it under the terms of the GNU General Public License as published by
6 # the Free Software Foundation; either version 2 of the License, or
7 # (at your option) any later version.
9 # This program is distributed in the hope that it will be useful, but
10 # WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 # General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program; if not, write to the Free Software
16 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 PROGNAME=$(basename $0)
25 PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin
38 DATE="date -u" # Time in UTC
45 MSG_TYPE_TASK_START="TASK_START"
46 MSG_TYPE_TASK_END="TASK_END"
52 for arg; do cmd+=$(printf "%q " "$arg"); done
58 echo "ERROR: $@" | tee $RESULT >&2
63 echo "Warning: $@" >&2
64 echo "WARNING:$@" > "$MONITOR"
68 echo "$MSG_TYPE_TASK_START:${PROGNAME:2}" > "$MONITOR"
72 echo "$MSG_TYPE_TASK_END:${PROGNAME:2}" > "$MONITOR"
76 if [ ${#ERRORS[*]} -eq 0 ]; then
77 # No error message. Print stderr
78 local lines=$(tail --lines=${STDERR_LINE_SIZE} "$STDERR_FILE" | wc -l)
79 echo -n "STDERR:${lines}:" > "$MONITOR"
80 tail --lines=$lines "$STDERR_FILE" > "$MONITOR"
82 echo -n "ERROR:" > "$MONITOR"
83 for line in "${ERRORS[@]}"; do
84 echo "$line" > "$MONITOR"
90 echo o > /proc/sysrq-trigger
96 if [ -e "$root_dir/etc/debian_version" ]; then
98 elif [ -e "$root_dir/etc/redhat-release" ]; then
100 elif [ -e "$root_dir/etc/slackware-version" ]; then
102 elif [ -e "$root_dir/etc/SuSE-release" ]; then
104 elif [ -e "$root_dir/etc/gentoo-release" ]; then
106 elif [ -e "$root_dir/etc/arch-release" ]; then
109 warn "Unknown base distro."
116 if [ -e "$root_dir/etc/debian_version" ]; then
118 if [ -e ${root_dir}/etc/lsb-release ]; then
119 ID=$(grep ^DISTRIB_ID= ${root_dir}/etc/lsb-release | cut -d= -f2)
120 if [ "x$ID" = "xUbuntu" ]; then
125 elif [ -e "$root_dir/etc/fedora-release" ]; then
127 elif [ -e "$root_dir/etc/centos-release" ]; then
129 elif [ -e "$root_dir/etc/redhat-release" ]; then
131 elif [ -e "$root_dir/etc/slackware-version" ]; then
133 elif [ -e "$root_dir/etc/SuSE-release" ]; then
135 elif [ -e "$root_dir/etc/gentoo-release" ]; then
137 elif [ -e "$root_dir/etc/arch-release" ]; then
140 warn "Unknown distro."
145 get_partition_table() {
147 # If the partition table is gpt then parted will raise an error if the
148 # secondary gpt is not it the end of the disk, and a warning that has to
149 # do with the "Last Usable LBA" entry in gpt.
150 if ! output="$("$PARTED" -s -m "$dev" unit s print | grep -E -v "^(Warning|Error): ")"; then
151 log_error "Unable to read partition table for device \`${dev}'"
157 get_partition_table_type() {
160 local dev="$(sed -n 2p <<< "$ptable")"
162 IFS=':' read -ra field <<< "$dev"
167 get_partition_count() {
170 expr $(echo "$ptable" | wc -l) - 2
173 get_partition_by_num() {
177 grep "^$id:" <<< "$ptable"
180 get_last_partition() {
183 echo "$ptable" | tail -1
186 is_extended_partition() {
190 id=$($SFDISK --print-id "$dev" "$part_num")
191 if [ "$id" = "5" ]; then
198 get_extended_partition() {
200 local dev="$(echo "$ptable" | sed -n 2p | cut -d':' -f1)"
202 tail -n +3 <<< "$ptable" | while read line; do
203 part_num=$(cut -d':' -f1 <<< "$line")
204 if [ $(is_extended_partition "$dev" "$part_num") == "yes" ]; then
212 get_logical_partitions() {
215 tail -n +3 <<< "$ptable" | while read line; do
216 part_num=$(cut -d':' -f1 <<< "$line")
217 if [ $part_num -ge 5 ]; then
225 get_last_primary_partition() {
227 local dev=$(echo "ptable" | sed -n 2p | cut -d':' -f1)
230 if output=$(grep "^$i:" <<< "$ptable"); then
238 get_partition_to_resize() {
241 table=$(get_partition_table "$dev")
243 if [ $(get_partition_count "$table") -eq 0 ]; then
247 table_type=$(get_partition_table_type "$table")
248 last_part=$(get_last_partition "$table")
249 last_part_num=$(cut -d: -f1 <<< "$last_part")
251 if [ "$table_type" == "msdos" -a $last_part_num -gt 4 ]; then
252 extended=$(get_extended_partition "$table")
253 last_primary=$(get_last_primary_partition "$table")
254 ext_num=$(cut -d: -f1 <<< "$extended")
255 prim_num=$(cut -d: -f1 <<< "$last_primary")
257 if [ "$ext_num" != "$last_prim_num" ]; then
258 echo "$last_prim_num"
260 echo "$last_part_num"
263 echo "$last_part_num"
273 IFS=":;" read -ra fields <<< "$part"
274 local id="${fields[0]}"
275 local start="${fields[1]}"
276 local end="${fields[2]}"
277 local size="${fields[3]}"
278 local fs="${fields[4]}"
279 local name="${fields[5]}"
280 local flags="${fields[6]//,/ }"
282 $PARTED -s -m -- $device mkpart "$ptype" $fs "$start" "$end"
283 for flag in $flags; do
284 $PARTED -s -m $device set "$id" "$flag" on
288 enlarge_partition() {
294 if [ -z "$new_end" ]; then
295 new_end=$(cut -d: -f 3 <<< "$(get_last_free_sector "$device")")
299 IFS=":;" read -ra fields <<< "$part"
303 for ((i = 0; i < ${#fields[*]}; i = i + 1)); do
304 new_part="$new_part":"${fields[$i]}"
306 new_part=${new_part:1}
308 # If this is an extended partition, removing it will also remove the
309 # logical partitions it contains. We need to save them for later.
310 if [ "$ptype" = "extended" ]; then
311 local table="$(get_partition_table "$device")"
312 local logical="$(get_logical_partitions "$table")"
316 $PARTED -s -m "$device" rm "$id"
317 create_partition "$device" "$new_part" "$ptype"
319 if [ "$ptype" = "extended" ]; then
320 # Recreate logical partitions
321 echo "$logical" | while read logical_part; do
322 create_partition "$device" "$logical_part" "logical"
327 get_last_free_sector() {
331 if [ -n "$unit" ]; then
335 local last_line="$("$PARTED" -s -m "$dev" "$unit" print free | tail -1)"
336 local ptype="$(cut -d: -f 5 <<< "$last_line")"
338 if [ "$ptype" = "free;" ]; then
344 # if something fails here, it shouldn't call cleanup again...
347 if [ ${#CLEANUP[*]} -gt 0 ]; then
348 LAST_ELEMENT=$((${#CLEANUP[*]}-1))
349 REVERSE_INDEXES=$(seq ${LAST_ELEMENT} -1 0)
350 for i in $REVERSE_INDEXES; do
351 # If something fails here, it's better to retry it for a few times
352 # before we give up with an error. This is needed for kpartx when
353 # dealing with ntfs partitions mounted through fuse. umount is not
354 # synchronous and may return while the partition is still busy. A
355 # premature attempt to delete partition mappings through kpartx on
356 # a device that hosts previously mounted ntfs partition may fail
357 # with a `device-mapper: remove ioctl failed: Device or resource
358 # busy' error. A sensible workaround for this is to wait for a
359 # while and then try again.
360 local cmd=${CLEANUP[$i]}
361 $cmd || for interval in 0.25 0.5 1 2 4; do
362 echo "Command $cmd failed!"
363 echo "I'll wait for $interval secs and will retry..."
367 if [ "$?" != "0" ]; then
378 if [ $rc -eq 0 ]; then
387 check_if_excluded() {
388 local name="$(tr [a-z] [A-Z] <<< ${PROGNAME:2})"
389 local exclude="SNF_IMAGE_PROPERTY_EXCLUDE_TASK_${name}"
390 if [ -n "${!exclude}" ]; then
391 warn "Task ${PROGNAME:2} was excluded and will not run."
401 STDERR_FILE=$(mktemp)
402 add_cleanup rm -f "$STDERR_FILE"
403 exec 2> >(tee -a "$STDERR_FILE" >&2)
405 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :