OpenWrt – Blame information for rev 2

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1 office 1 #!/bin/sh
2  
3 . /lib/functions.sh
4 . /lib/functions/system.sh
5  
6 # initialize defaults
7 export MTD_ARGS=""
8 export MTD_CONFIG_ARGS=""
9 export INTERACTIVE=0
10 export VERBOSE=1
11 export SAVE_CONFIG=1
12 export SAVE_OVERLAY=0
13 export SAVE_OVERLAY_PATH=
14 export SAVE_PARTITIONS=1
15 export SAVE_INSTALLED_PKGS=0
16 export SKIP_UNCHANGED=0
17 export CONF_IMAGE=
18 export CONF_BACKUP_LIST=0
19 export CONF_BACKUP=
20 export CONF_RESTORE=
21 export NEED_IMAGE=
22 export HELP=0
23 export FORCE=0
24 export TEST=0
25 export UMOUNT_ETCBACKUP_DIR=0
26  
27 # parse options
28 while [ -n "$1" ]; do
29 case "$1" in
30 -i) export INTERACTIVE=1;;
31 -v) export VERBOSE="$(($VERBOSE + 1))";;
32 -q) export VERBOSE="$(($VERBOSE - 1))";;
33 -n) export SAVE_CONFIG=0;;
34 -c) export SAVE_OVERLAY=1 SAVE_OVERLAY_PATH=/etc;;
35 -o) export SAVE_OVERLAY=1 SAVE_OVERLAY_PATH=/;;
36 -p) export SAVE_PARTITIONS=0;;
37 -k) export SAVE_INSTALLED_PKGS=1;;
38 -u) export SKIP_UNCHANGED=1;;
39 -b|--create-backup) export CONF_BACKUP="$2" NEED_IMAGE=1; shift;;
40 -r|--restore-backup) export CONF_RESTORE="$2" NEED_IMAGE=1; shift;;
41 -l|--list-backup) export CONF_BACKUP_LIST=1;;
42 -f) export CONF_IMAGE="$2"; shift;;
43 -F|--force) export FORCE=1;;
44 -T|--test) export TEST=1;;
45 -h|--help) export HELP=1; break;;
46 -*)
47 echo "Invalid option: $1" >&2
48 exit 1
49 ;;
50 *) break;;
51 esac
52 shift;
53 done
54  
55 export CONFFILES=/tmp/sysupgrade.conffiles
56 export CONF_TAR=/tmp/sysupgrade.tgz
57 export ETCBACKUP_DIR=/etc/backup
58 export INSTALLED_PACKAGES=${ETCBACKUP_DIR}/installed_packages.txt
59  
60 IMAGE="$1"
61  
62 [ -z "$IMAGE" -a -z "$NEED_IMAGE" -a $CONF_BACKUP_LIST -eq 0 -o $HELP -gt 0 ] && {
63 cat <<EOF
64 Usage: $0 [<upgrade-option>...] <image file or URL>
65 $0 [-q] [-i] [-c] [-u] [-o] [-k] <backup-command> <file>
66  
67 upgrade-option:
68 -f <config> restore configuration from .tar.gz (file or url)
69 -i interactive mode
70 -c attempt to preserve all changed files in /etc/
71 -o attempt to preserve all changed files in /, except those
72 from packages but including changed confs.
73 -u skip from backup files that are equal to those in /rom
74 -n do not save configuration over reflash
75 -p do not attempt to restore the partition table after flash.
76 -k include in backup a list of current installed packages at
77 $INSTALLED_PACKAGES
78 -T | --test
79 Verify image and config .tar.gz but do not actually flash.
80 -F | --force
81 Flash image even if image checks fail, this is dangerous!
82 -q less verbose
83 -v more verbose
84 -h | --help display this help
85  
86 backup-command:
87 -b | --create-backup <file>
88 create .tar.gz of files specified in sysupgrade.conf
89 then exit. Does not flash an image. If file is '-',
90 i.e. stdout, verbosity is set to 0 (i.e. quiet).
91 -r | --restore-backup <file>
92 restore a .tar.gz created with sysupgrade -b
93 then exit. Does not flash an image. If file is '-',
94 the archive is read from stdin.
95 -l | --list-backup
96 list the files that would be backed up when calling
97 sysupgrade -b. Does not create a backup file.
98  
99 EOF
100 exit 1
101 }
102  
103 [ -n "$IMAGE" -a -n "$NEED_IMAGE" ] && {
104 cat <<-EOF
105 -b|--create-backup and -r|--restore-backup do not perform a firmware upgrade.
106 Do not specify both -b|-r and a firmware image.
107 EOF
108 exit 1
109 }
110  
111 # prevent messages from clobbering the tarball when using stdout
112 [ "$CONF_BACKUP" = "-" ] && export VERBOSE=0
113  
114  
115 list_conffiles() {
116 awk '
117 BEGIN { conffiles = 0 }
118 /^Conffiles:/ { conffiles = 1; next }
119 !/^ / { conffiles = 0; next }
120 conffiles == 1 { print }
121 ' /usr/lib/opkg/status
122 }
123  
124 list_changed_conffiles() {
125 # Cannot handle spaces in filenames - but opkg cannot either...
126 list_conffiles | while read file csum; do
127 [ -r "$file" ] || continue
128  
129 echo "${csum} ${file}" | sha256sum -sc - || echo "$file"
130 done
131 }
132  
133 add_conffiles() {
134 local file="$1"
135 ( find $(sed -ne '/^[[:space:]]*$/d; /^#/d; p' \
136 /etc/sysupgrade.conf /lib/upgrade/keep.d/* 2>/dev/null) \
137 \( -type f -o -type l \) $find_filter 2>/dev/null;
138 list_changed_conffiles ) | sort -u > "$file"
139 return 0
140 }
141  
142 add_overlayfiles() {
143 local file="$1"
144  
145 local packagesfiles=$1.packagesfiles
146 touch "$packagesfiles"
147  
148 if [ "$SAVE_OVERLAY_PATH" = / ]; then
149 local conffiles=$1.conffiles
150 local keepfiles=$1.keepfiles
151  
152 list_conffiles | cut -f2 -d ' ' | sort -u > "$conffiles"
153  
154 # backup files from /etc/sysupgrade.conf and /lib/upgrade/keep.d, but
155 # ignore those aready controlled by opkg conffiles
156 find $(sed -ne '/^[[:space:]]*$/d; /^#/d; p' \
157 /etc/sysupgrade.conf /lib/upgrade/keep.d/* 2>/dev/null) \
158 \( -type f -o -type l \) 2>/dev/null | sort -u |
159 grep -h -v -x -F -f $conffiles > "$keepfiles"
160  
161 # backup conffiles, but only those changed if '-u'
162 [ $SKIP_UNCHANGED = 1 ] &&
163 list_changed_conffiles | sort -u > "$conffiles"
164  
165 # do not backup files from packages, except those listed
166 # in conffiles and keep.d
167 {
168 find /usr/lib/opkg/info -type f -name "*.list" -exec cat {} \;
169 find /usr/lib/opkg/info -type f -name "*.control" -exec sed \
170 -ne '/^Alternatives/{s/^Alternatives: //;s/, /\n/g;p}' {} \; |
171 cut -f2 -d:
172 } | grep -v -x -F -f $conffiles |
173 grep -v -x -F -f $keepfiles | sort -u > "$packagesfiles"
174 rm -f "$keepfiles" "$conffiles"
175 fi
176  
177 # busybox grep bug when file is empty
178 [ -s "$packagesfiles" ] || echo > $packagesfiles
179  
180 ( cd /overlay/upper/; find .$SAVE_OVERLAY_PATH \( -type f -o -type l \) $find_filter | sed \
181 -e 's,^\.,,' \
182 -e '\,^/etc/board.json$,d' \
183 -e '\,/[^/]*-opkg$,d' \
184 -e '\,^/etc/urandom.seed$,d' \
185 -e "\,^$INSTALLED_PACKAGES$,d" \
186 -e '\,^/usr/lib/opkg/.*,d' \
187 ) | grep -v -x -F -f $packagesfiles > "$file"
188  
189 rm -f "$packagesfiles"
190  
191 return 0
192 }
193  
194 # hooks
195 sysupgrade_image_check="fwtool_check_signature fwtool_check_image platform_check_image"
196  
197 if [ $SAVE_OVERLAY = 1 ]; then
198 [ ! -d /overlay/upper/etc ] && {
199 echo "Cannot find '/overlay/upper/etc', required for '-c'" >&2
200 exit 1
201 }
202 sysupgrade_init_conffiles="add_overlayfiles"
203 else
204 sysupgrade_init_conffiles="add_conffiles"
205 fi
206  
207 find_filter=""
208 if [ $SKIP_UNCHANGED = 1 ]; then
209 [ ! -d /rom/ ] && {
210 echo "'/rom/' is required by '-u'"
211 exit 1
212 }
213 find_filter='( ( -exec test -e /rom/{} ; -exec cmp -s /{} /rom/{} ; ) -o -print )'
214 fi
215  
216 include /lib/upgrade
217  
218 do_save_conffiles() {
219 local conf_tar="$1"
220  
221 [ -z "$(rootfs_type)" ] && {
222 echo "Cannot save config while running from ramdisk." >&2
223 ask_bool 0 "Abort" && exit
224 rm -f "$conf_tar"
225 return 0
226 }
227 run_hooks "$CONFFILES" $sysupgrade_init_conffiles
228 ask_bool 0 "Edit config file list" && vi "$CONFFILES"
229  
230 if [ "$SAVE_INSTALLED_PKGS" -eq 1 ]; then
231 echo "${INSTALLED_PACKAGES}" >> "$CONFFILES"
232 mkdir -p "$ETCBACKUP_DIR"
233 # Avoid touching filesystem on each backup
234 RAMFS="$(mktemp -d -t sysupgrade.XXXXXX)"
235 mkdir -p "$RAMFS/upper" "$RAMFS/work"
236 mount -t overlay overlay -o lowerdir=$ETCBACKUP_DIR,upperdir=$RAMFS/upper,workdir=$RAMFS/work $ETCBACKUP_DIR &&
237 UMOUNT_ETCBACKUP_DIR=1 || {
238 echo "Cannot mount '$ETCBACKUP_DIR' as tmpfs to avoid touching disk while saving the list of installed packages." >&2
239 ask_bool 0 "Abort" && exit
240 }
241  
242 # Format: pkg-name<TAB>{rom,overlay,unkown}
243 # rom is used for pkgs in /rom, even if updated later
244 find /usr/lib/opkg/info -name "*.control" \( \
245 \( -exec test -f /rom/{} \; -exec echo {} rom \; \) -o \
246 \( -exec test -f /overlay/upper/{} \; -exec echo {} overlay \; \) -o \
247 \( -exec echo {} unknown \; \) \
248 \) | sed -e 's,.*/,,;s/\.control /\t/' > ${INSTALLED_PACKAGES}
249 fi
250  
251 v "Saving config files..."
252 [ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
253 tar c${TAR_V}zf "$conf_tar" -T "$CONFFILES" 2>/dev/null
254 if [ "$?" -ne 0 ]; then
255 echo "Failed to create the configuration backup."
256 rm -f "$conf_tar"
257 exit 1
258 fi
259  
260 [ "$UMOUNT_ETCBACKUP_DIR" -eq 1 ] && {
261 umount "$ETCBACKUP_DIR"
262 rm -rf "$RAMFS"
263 }
264 rm -f "$CONFFILES"
265 }
266  
267 if [ $CONF_BACKUP_LIST -eq 1 ]; then
268 run_hooks "$CONFFILES" $sysupgrade_init_conffiles
269 [ "$SAVE_INSTALLED_PKGS" -eq 1 ] && echo ${INSTALLED_PACKAGES} >> "$CONFFILES"
270 cat "$CONFFILES"
271 rm -f "$CONFFILES"
272 exit 0
273 fi
274  
275 if [ -n "$CONF_BACKUP" ]; then
276 do_save_conffiles "$CONF_BACKUP"
277 exit $?
278 fi
279  
280 if [ -n "$CONF_RESTORE" ]; then
281 if [ "$CONF_RESTORE" != "-" ] && [ ! -f "$CONF_RESTORE" ]; then
282 echo "Backup archive '$CONF_RESTORE' not found." >&2
283 exit 1
284 fi
285  
286 [ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
287 tar -C / -x${TAR_V}zf "$CONF_RESTORE"
288 exit $?
289 fi
290  
291 type platform_check_image >/dev/null 2>/dev/null || {
292 echo "Firmware upgrade is not implemented for this platform." >&2
293 exit 1
294 }
295  
296 case "$IMAGE" in
297 http://*|\
298 https://*)
299 wget -O/tmp/sysupgrade.img "$IMAGE"
300 IMAGE=/tmp/sysupgrade.img
301 ;;
302 esac
303  
304 IMAGE="$(readlink -f "$IMAGE")"
305  
306 case "$IMAGE" in
307 '')
308 echo "Image file not found." >&2
309 exit 1
310 ;;
311 /tmp/*) ;;
312 *)
313 v "Image not in /tmp, copying..."
314 cp -f "$IMAGE" /tmp/sysupgrade.img
315 IMAGE=/tmp/sysupgrade.img
316 ;;
317 esac
318  
319 export ARGV="$IMAGE"
320 export ARGC=1
321  
322 for check in $sysupgrade_image_check; do
323 ( $check "$IMAGE" ) || {
324 if [ $FORCE -eq 1 ]; then
325 echo "Image check '$check' failed but --force given - will update anyway!" >&2
326 break
327 else
328 echo "Image check '$check' failed." >&2
329 exit 1
330 fi
331 }
332 done
333  
334 if [ -n "$CONF_IMAGE" ]; then
335 case "$(get_magic_word $CONF_IMAGE cat)" in
336 # .gz files
337 1f8b) ;;
338 *)
339 echo "Invalid config file. Please use only .tar.gz files" >&2
340 exit 1
341 ;;
342 esac
343 get_image "$CONF_IMAGE" "cat" > "$CONF_TAR"
344 export SAVE_CONFIG=1
345 elif ask_bool $SAVE_CONFIG "Keep config files over reflash"; then
346 [ $TEST -eq 1 ] || do_save_conffiles "$CONF_TAR"
347 export SAVE_CONFIG=1
348 else
349 [ $TEST -eq 1 ] || rm -f "$CONF_TAR"
350 export SAVE_CONFIG=0
351 fi
352  
353 if [ $TEST -eq 1 ]; then
354 exit 0
355 fi
356  
357 if [ $SAVE_PARTITIONS -eq 0 ]; then
358 touch /tmp/sysupgrade.always.overwrite.bootdisk.partmap
359 else
360 rm -f /tmp/sysupgrade.always.overwrite.bootdisk.partmap
361 fi
362  
363 install_bin /sbin/upgraded
364 v "Commencing upgrade. Closing all shell sessions."
365  
366 COMMAND='. /lib/functions.sh; include /lib/upgrade; do_upgrade_stage2'
367  
368 if [ -n "$FAILSAFE" ]; then
369 printf '%s\x00%s\x00%s' "$RAM_ROOT" "$IMAGE" "$COMMAND" >/tmp/sysupgrade
370 lock -u /tmp/.failsafe
371 else
372 ubus call system sysupgrade "{
373 \"prefix\": $(json_string "$RAM_ROOT"),
374 \"path\": $(json_string "$IMAGE"),
375 \"command\": $(json_string "$COMMAND")
376 }"
377 fi