diff options
Diffstat (limited to 'package/base-files')
| -rwxr-xr-x | package/base-files/files/etc/preinit | 8 | ||||
| -rw-r--r-- | package/base-files/files/lib/upgrade/common.sh | 151 | ||||
| -rwxr-xr-x | package/base-files/files/sbin/sysupgrade | 92 |
3 files changed, 251 insertions, 0 deletions
diff --git a/package/base-files/files/etc/preinit b/package/base-files/files/etc/preinit index c11732f7a..452209ff9 100755 --- a/package/base-files/files/etc/preinit +++ b/package/base-files/files/etc/preinit @@ -60,6 +60,14 @@ echo "$HOTPLUG" > /proc/sys/kernel/hotplug eval ${FAILSAFE:+failsafe} lock -w /tmp/.failsafe mount_root +[ -f /sysupgrade.tgz ] && { + echo "- config restore -" + cd / + mv sysupgrade.tgz /tmp + tar xzf /tmp/sysupgrade.tgz + rm -f /tmp/sysupgrade.tgz + sync +} echo "- init -" diff --git a/package/base-files/files/lib/upgrade/common.sh b/package/base-files/files/lib/upgrade/common.sh new file mode 100644 index 000000000..6cc09e1a4 --- /dev/null +++ b/package/base-files/files/lib/upgrade/common.sh @@ -0,0 +1,151 @@ +#!/bin/sh + +RAM_ROOT=/tmp/root + +ldd() { LD_TRACE_LOADED_OBJECTS=1 $*; } +libs() { ldd $* | awk '{print $3}'; } + +install_file() { # <file> [ <file> ... ] + for file in "$@"; do + dest="$RAM_ROOT/$file" + [ -f $file -a ! -f $dest ] && { + dir="$(dirname $dest)" + mkdir -p "$dir" + cp $file $dest + } + done +} + +install_bin() { # <file> [ <symlink> ... ] + src=$1 + files=$1 + [ -x "$src" ] && files="$src $(libs $src)" + install_file $files + shift + for link in "$@"; do { + dest="$RAM_ROOT/$link" + dir="$(dirname $dest)" + mkdir -p "$dir" + [ -f "$dest" ] || ln -s $src $dest + }; done +} + +pivot() { # <new_root> <old_root> + mount | grep "on $1 type" 2>&- 1>&- || mount -o bind $1 $1 + mkdir -p $1$2 $1/proc $1/dev $1/tmp $1/jffs && \ + mount -o move /proc $1/proc && \ + pivot_root $1 $1$2 || { + umount $1 $1 + return 1 + } + mount -o move $2/dev /dev + mount -o move $2/tmp /tmp + mount -o move $2/jffs /jffs 2>&- + return 0 +} + +run_ramfs() { # <command> [...] + install_bin /bin/busybox /bin/ash /bin/sh /bin/mount /bin/umount /sbin/pivot_root /usr/bin/wget /sbin/reboot /bin/sync /bin/dd /bin/grep /bin/cp /bin/mv /bin/tar /usr/bin/md5sum "/usr/bin/[" /bin/vi + install_bin /sbin/mtd + for file in $RAMFS_COPY_BIN; do + install_bin $file + done + install_file /etc/resolv.conf /etc/functions.sh /lib/upgrade/*.sh $RAMFS_COPY_DATA + + pivot $RAM_ROOT /mnt || { + echo "Failed to switch over to ramfs. Please reboot." + exit 1 + } + + mount -o remount,ro /mnt + umount -l /mnt + + grep /jffs /proc/mounts > /dev/null && { + mount -o remount,ro /jffs + umount -l /jffs + } + + # spawn a new shell from ramdisk to reduce the probability of cache issues + exec /bin/busybox ash -c "$*" +} + +run_hooks() { + local arg="$1"; shift + for func in "$@"; do + eval "$func $arg" + done +} + +ask_bool() { + local default="$1"; shift; + local answer="$default" + + [ "$INTERACTIVE" -eq 1 ] && { + case "$default" in + 0) echo -n "$* (y/N): ";; + *) echo -n "$* (Y/n): ";; + esac + read answer + case "$answer" in + y*) answer=1;; + n*) answer=0;; + *) answer="$default";; + esac + } + [ "$answer" -gt 0 ] +} + +v() { + [ "$VERBOSE" -ge 1 ] && echo "$@" +} + +rootfs_type() { + mount | awk '($3 ~ /^\/$/) && ($5 !~ /rootfs/) { print $5 }' +} + +get_image() { + local from="$1" + + case "$from" in + http://*|ftp://*) wget -O- -q "$from";; + *) cat "$from" + esac +} + +get_magic_word() { + get_image "$1" | dd bs=2 count=1 2>/dev/null | hexdump | awk '$2 { print $2 }' +} + +refresh_mtd_partitions() { + mtd refresh rootfs +} + +jffs2_copy_config() { + if grep rootfs_data /proc/mtd >/dev/null; then + # squashfs+jffs2 + mtd -e rootfs_data jffs2write "$CONF_TAR" rootfs_data + else + # jffs2 + mtd jffs2write "$CONF_TAR" rootfs + fi +} + +do_upgrade() { + v "Performing system upgrade..." + platform_do_upgrade "$ARGV" + + [ "$SAVE_CONFIG" -eq 1 ] && { + v "Refreshing partitions" + if type 'platform_refresh_partitions' >/dev/null 2>/dev/null; then + platform_refresh_partitions + else + refresh_mtd_partitions + fi + if type 'platform_copy_config' >/dev/null 2>/dev/null; then + platform_copy_config + else + jffs2_copy_config + fi + } + ask_bool 1 "Reboot" && reboot +} diff --git a/package/base-files/files/sbin/sysupgrade b/package/base-files/files/sbin/sysupgrade new file mode 100755 index 000000000..2805c314d --- /dev/null +++ b/package/base-files/files/sbin/sysupgrade @@ -0,0 +1,92 @@ +#!/bin/sh +. /etc/functions.sh + +# initialize defaults +RAMFS_COPY_BIN="" # extra programs for temporary ramfs root +RAMFS_COPY_DATA="" # extra data files +export INTERACTIVE=0 +export VERBOSE=1 +export SAVE_CONFIG=1 + +# parse options +while [ -n "$1" ]; do + case "$1" in + -i) export INTERACTIVE=1;; + -v) export VERBOSE="$(($VERBOSE + 1))";; + -q) export VERBOSE="$(($VERBOSE - 1))";; + -*) + echo "Invalid option: $1" + exit 1 + ;; + *) break;; + esac + shift; +done + +export CONFFILES=/tmp/sysupgrade.conffiles +export CONF_TAR=/tmp/sysupgrade.tgz + +export ARGV="$*" +export ARGC="$#" + +[ -z "$ARGV" ] && { + cat <<EOF +Usage: $0 [options] <image file or URL> + +Options: + -i interactive mode + -v more verbose + -q less verbose + +EOF + exit 1 +} + +add_uci_conffiles() { + local file="$1" + find /etc/config > "$file" + return 0 +} + +# hooks +sysupgrade_image_check="platform_check_image" +sysupgrade_init_conffiles="add_uci_conffiles" + +include /lib/upgrade + +do_save_conffiles() { + [ -z "$(rootfs_type)" ] && { + echo "Cannot save config while running from ramdisk." + ask_bool 0 "Abort" && exit + return 0 + } + run_hooks "$CONFFILES" $sysupgrade_init_conffiles + ask_bool 0 "Edit config file list" && vi "$CONFFILES" + + v "Saving config files..." + [ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V="" + tar c${TAR_V}zf "$CONF_TAR" -T "$CONFFILES" 2>/dev/null +} + +type platform_check_image >/dev/null 2>/dev/null || { + echo "Firmware upgrade is not implemented for this platform." + exit 1 +} + +for check in $sysupgrade_image_check; do + ( eval "$check \"\$ARGV\"" ) || { + echo "Image check '$check' failed." + exit 1 + } +done + +if ask_bool $SAVE_CONFIG "Keep config files over reflash"; then + do_save_conffiles + export SAVE_CONFIG=1 +else + export SAVE_CONFIG=0 +fi +run_hooks "" $sysupgrade_pre_upgrade + +v "Switching to ramdisk..." +run_ramfs '. /etc/functions.sh; include /lib/upgrade; do_upgrade' |