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 $0)
25 PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin
38 DATE="date -u" # Time in UTC
44 MSG_TYPE_TASK_START="TASK_START"
45 MSG_TYPE_TASK_END="TASK_END"
51 for arg; do cmd+=$(printf "%q " "$arg"); done
57 echo "ERROR: $@" | tee $RESULT >&2
62 echo "Warning: $@" >&2
63 echo "WARNING:$@" > "$MONITOR"
67 echo "$MSG_TYPE_TASK_START:${PROGNAME:2}" > "$MONITOR"
71 echo "$MSG_TYPE_TASK_END:${PROGNAME:2}" > "$MONITOR"
75 if [ ${#ERRORS[*]} -eq 0 ]; then
76 # No error message. Print stderr
77 local lines=$(tail --lines=${STDERR_LINE_SIZE} "$STDERR_FILE" | wc -l)
78 echo -n "STDERR:${lines}:" > "$MONITOR"
79 tail --lines=$lines "$STDERR_FILE" > "$MONITOR"
81 echo -n "ERROR:" > "$MONITOR"
82 for line in "${ERRORS[@]}"; do
83 echo "$line" > "$MONITOR"
91 if [ -e "$root_dir/etc/debian_version" ]; then
93 elif [ -e "$root_dir/etc/redhat-release" ]; then
95 elif [ -e "$root_dir/etc/slackware-version" ]; then
97 elif [ -e "$root_dir/etc/SuSE-release" ]; then
99 elif [ -e "$root_dir/etc/gentoo-release" ]; then
101 elif [ -e "$root_dir/etc/arch-release" ]; then
104 warn "Unknown base distro."
111 if [ -e "$root_dir/etc/debian_version" ]; then
113 if [ -e ${root_dir}/etc/lsb-release ]; then
114 ID=$(grep ^DISTRIB_ID= ${root_dir}/etc/lsb-release | cut -d= -f2)
115 if [ "x$ID" = "xUbuntu" ]; then
120 elif [ -e "$root_dir/etc/fedora-release" ]; then
122 elif [ -e "$root_dir/etc/centos-release" ]; then
124 elif [ -e "$root_dir/etc/redhat-release" ]; then
126 elif [ -e "$root_dir/etc/slackware-version" ]; then
128 elif [ -e "$root_dir/etc/SuSE-release" ]; then
130 elif [ -e "$root_dir/etc/gentoo-release" ]; then
132 elif [ -e "$root_dir/etc/arch-release" ]; then
135 warn "Unknown distro."
140 get_partition_table() {
142 # If the partition table is gpt then parted will raise an error if the
143 # secondary gpt is not it the end of the disk, and a warning that has to
144 # do with the "Last Usable LBA" entry in gpt.
145 if ! output="$("$PARTED" -s -m "$dev" unit s print | grep -E -v "^(Warning|Error): ")"; then
146 log_error "Unable to read partition table for device \`${dev}'"
152 get_partition_table_type() {
155 local dev="$(sed -n 2p <<< "$ptable")"
157 IFS=':' read -ra field <<< "$dev"
162 get_partition_count() {
165 expr $(echo "$ptable" | wc -l) - 2
168 get_partition_by_num() {
172 grep "^$id:" <<< "$ptable"
175 get_last_partition() {
178 echo "$ptable" | tail -1
181 is_extended_partition() {
185 id=$($SFDISK --print-id "$dev" "$part_num")
186 if [ "$id" = "5" ]; then
193 get_extended_partition() {
195 local dev="$(echo "$ptable" | sed -n 2p | cut -d':' -f1)"
197 tail -n +3 <<< "$ptable" | while read line; do
198 part_num=$(cut -d':' -f1 <<< "$line")
199 if [ $(is_extended_partition "$dev" "$part_num") == "yes" ]; then
207 get_logical_partitions() {
210 tail -n +3 <<< "$ptable" | while read line; do
211 part_num=$(cut -d':' -f1 <<< "$line")
212 if [ $part_num -ge 5 ]; then
220 get_last_primary_partition() {
222 local dev=$(echo "ptable" | sed -n 2p | cut -d':' -f1)
225 if output=$(grep "^$i:" <<< "$ptable"); then
233 get_partition_to_resize() {
236 table=$(get_partition_table "$dev")
238 if [ $(get_partition_count "$table") -eq 0 ]; then
242 table_type=$(get_partition_table_type "$table")
243 last_part=$(get_last_partition "$table")
244 last_part_num=$(cut -d: -f1 <<< "$last_part")
246 if [ "$table_type" == "msdos" -a $last_part_num -gt 4 ]; then
247 extended=$(get_extended_partition "$table")
248 last_primary=$(get_last_primary_partition "$table")
249 ext_num=$(cut -d: -f1 <<< "$extended")
250 prim_num=$(cut -d: -f1 <<< "$last_primary")
252 if [ "$ext_num" != "$last_prim_num" ]; then
253 echo "$last_prim_num"
255 echo "$last_part_num"
258 echo "$last_part_num"
268 IFS=":;" read -ra fields <<< "$part"
269 local id="${fields[0]}"
270 local start="${fields[1]}"
271 local end="${fields[2]}"
272 local size="${fields[3]}"
273 local fs="${fields[4]}"
274 local name="${fields[5]}"
275 local flags="${fields[6]//,/ }"
277 $PARTED -s -m -- $device mkpart "$ptype" $fs "$start" "$end"
278 for flag in $flags; do
279 $PARTED -s -m $device set "$id" "$flag" on
283 enlarge_partition() {
289 if [ -z "$new_end" ]; then
290 new_end=$(cut -d: -f 3 <<< "$(get_last_free_sector "$device")")
294 IFS=":;" read -ra fields <<< "$part"
298 for ((i = 0; i < ${#fields[*]}; i = i + 1)); do
299 new_part="$new_part":"${fields[$i]}"
301 new_part=${new_part:1}
303 # If this is an extended partition, removing it will also remove the
304 # logical partitions it contains. We need to save them for later.
305 if [ "$ptype" = "extended" ]; then
306 local table="$(get_partition_table "$device")"
307 local logical="$(get_logical_partitions "$table")"
311 $PARTED -s -m "$device" rm "$id"
312 create_partition "$device" "$new_part" "$ptype"
314 if [ "$ptype" = "extended" ]; then
315 # Recreate logical partitions
316 echo "$logical" | while read logical_part; do
317 create_partition "$device" "$logical_part" "logical"
322 get_last_free_sector() {
326 if [ -n "$unit" ]; then
330 local last_line="$("$PARTED" -s -m "$dev" "$unit" print free | tail -1)"
331 local ptype="$(cut -d: -f 5 <<< "$last_line")"
333 if [ "$ptype" = "free;" ]; then
339 # if something fails here, it shouldn't call cleanup again...
342 if [ ${#CLEANUP[*]} -gt 0 ]; then
343 LAST_ELEMENT=$((${#CLEANUP[*]}-1))
344 REVERSE_INDEXES=$(seq ${LAST_ELEMENT} -1 0)
345 for i in $REVERSE_INDEXES; do
346 # If something fails here, it's better to retry it for a few times
347 # before we give up with an error. This is needed for kpartx when
348 # dealing with ntfs partitions mounted through fuse. umount is not
349 # synchronous and may return while the partition is still busy. A
350 # premature attempt to delete partition mappings through kpartx on
351 # a device that hosts previously mounted ntfs partition may fail
352 # with a `device-mapper: remove ioctl failed: Device or resource
353 # busy' error. A sensible workaround for this is to wait for a
354 # while and then try again.
355 local cmd=${CLEANUP[$i]}
356 $cmd || for interval in 0.25 0.5 1 2 4; do
357 echo "Command $cmd failed!"
358 echo "I'll wait for $interval secs and will retry..."
362 if [ "$?" != "0" ]; then
373 if [ $rc -eq 0 ]; then
382 check_if_excluded() {
383 local name="$(tr [a-z] [A-Z] <<< ${PROGNAME:2})"
384 local exclude="SNF_IMAGE_PROPERTY_EXCLUDE_TASK_${name}"
385 if [ -n "${!exclude}" ]; then
386 warn "Task ${PROGNAME:2} was excluded and will not run."
396 STDERR_FILE=$(mktemp)
397 add_cleanup rm -f "$STDERR_FILE"
398 exec 2> >(tee -a "$STDERR_FILE" >&2)
400 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :