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0020-base-files-sysupgrade-cleanup.patch
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0020-base-files-sysupgrade-cleanup.patch 7.55 KiB
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Sun, 23 Apr 2017 23:33:14 +0200
Subject: base-files: sysupgrade cleanup
Some functions only used by stage2 are moved there from common.sh.
One piece that could still use more cleanup is platform_pre_upgrade: many
targets reference files from there are aren't available in the ramfs, so
we need to evaluate it before the switch; conversely, flash writes happen
in that function on some targets. Targets that do the latter should be
fixed eventually to use platform_do_upgrade for that purpose.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
diff --git a/package/base-files/files/lib/upgrade/common.sh b/package/base-files/files/lib/upgrade/common.sh
index 17248c2b1decd6f92558fb89601238b55fd0f0d6..fc59bf2323498d332159b00eb7ab443bfe6b147e 100644
--- a/package/base-files/files/lib/upgrade/common.sh
+++ b/package/base-files/files/lib/upgrade/common.sh
@@ -30,106 +30,6 @@ install_bin() { # <file> [ <symlink> ... ]
}; done
}
-supivot() { # <new_root> <old_root>
- /bin/mount | grep "on $1 type" 2>&- 1>&- || /bin/mount -o bind $1 $1
- mkdir -p $1$2 $1/proc $1/sys $1/dev $1/tmp $1/overlay && \
- /bin/mount -o noatime,move /proc $1/proc && \
- pivot_root $1 $1$2 || {
- /bin/umount -l $1 $1
- return 1
- }
-
- /bin/mount -o noatime,move $2/sys /sys
- /bin/mount -o noatime,move $2/dev /dev
- /bin/mount -o noatime,move $2/tmp /tmp
- /bin/mount -o noatime,move $2/overlay /overlay 2>&-
- return 0
-}
-
-run_ramfs() { # <command> [...]
- install_bin /bin/busybox /bin/ash /bin/sh /bin/mount /bin/umount \
- /sbin/pivot_root /sbin/reboot /bin/sync /bin/dd /bin/grep \
- /bin/cp /bin/mv /bin/tar /usr/bin/md5sum "/usr/bin/[" /bin/dd \
- /bin/vi /bin/ls /bin/cat /usr/bin/awk /usr/bin/hexdump \
- /bin/sleep /bin/zcat /usr/bin/bzcat /usr/bin/printf /usr/bin/wc \
- /bin/cut /usr/bin/printf /bin/sync /bin/mkdir /bin/rmdir \
- /bin/rm /usr/bin/basename /bin/kill /bin/chmod /usr/bin/find \
- /bin/mknod
-
- install_bin /sbin/mtd
- install_bin /sbin/mount_root
- install_bin /sbin/snapshot
- install_bin /sbin/snapshot_tool
- install_bin /usr/sbin/ubiupdatevol
- install_bin /usr/sbin/ubiattach
- install_bin /usr/sbin/ubiblock
- install_bin /usr/sbin/ubiformat
- install_bin /usr/sbin/ubidetach
- install_bin /usr/sbin/ubirsvol
- install_bin /usr/sbin/ubirmvol
- install_bin /usr/sbin/ubimkvol
- install_bin /usr/sbin/partx
- install_bin /usr/sbin/losetup
- install_bin /usr/sbin/mkfs.ext4
- for file in $RAMFS_COPY_BIN; do
- install_bin ${file//:/ }
- done
- install_file /etc/resolv.conf /lib/*.sh /lib/functions/*.sh /lib/upgrade/*.sh $RAMFS_COPY_DATA
-
- [ -L "/lib64" ] && ln -s /lib $RAM_ROOT/lib64
-- supivot $RAM_ROOT /mnt || {
- echo "Failed to switch over to ramfs. Please reboot."
- exit 1
- }
-
- /bin/mount -o remount,ro /mnt
- /bin/umount -l /mnt
-
- grep /overlay /proc/mounts > /dev/null && {
- /bin/mount -o noatime,remount,ro /overlay
- /bin/umount -l /overlay
- }
-
- # spawn a new shell from ramdisk to reduce the probability of cache issues
- exec /bin/busybox ash -c "$*"
-}
-
-kill_remaining() { # [ <signal> [ <loop> ] ]
- local sig="${1:-TERM}"
- local loop="${2:-0}"
- local run=true
- local stat
-
- echo -n "Sending $sig to remaining processes ... "
-
- while $run; do
- run=false
- for stat in /proc/[0-9]*/stat; do
- [ -f "$stat" ] || continue
-
- local pid name state ppid rest
- read pid name state ppid rest < $stat
- name="${name#(}"; name="${name%)}"
-
- # Skip PID1, ourself and our children
- [ $pid -ne 1 -a $pid -ne $$ -a $ppid -ne $$ ] || continue
-
- local cmdline
- read cmdline < /proc/$pid/cmdline
-
- # Skip kernel threads
- [ -n "$cmdline" ] || continue
-
- echo -n "$name "
- kill -$sig $pid 2>/dev/null
-
- [ $loop -eq 1 ] && run=true
- done
- done
- echo ""
-}
-
run_hooks() {
local arg="$1"; shift
for func in "$@"; do
diff --git a/package/base-files/files/lib/upgrade/stage2 b/package/base-files/files/lib/upgrade/stage2
index 4e2aa3a23c3bab07a795762a30a4d4f701081934..cc8047d988e39ca9ba27d2588744aad469d1d978 100755
--- a/package/base-files/files/lib/upgrade/stage2
+++ b/package/base-files/files/lib/upgrade/stage2
@@ -24,6 +24,104 @@ export CONF_TAR=/tmp/sysupgrade.tgz
include /lib/upgrade
+supivot() { # <new_root> <old_root>
+ /bin/mount | grep "on $1 type" 2>&- 1>&- || /bin/mount -o bind $1 $1
+ mkdir -p $1$2 $1/proc $1/sys $1/dev $1/tmp $1/overlay && \
+ /bin/mount -o noatime,move /proc $1/proc && \
+ pivot_root $1 $1$2 || {
+ /bin/umount -l $1 $1
+ return 1+ }
+
+ /bin/mount -o noatime,move $2/sys /sys
+ /bin/mount -o noatime,move $2/dev /dev
+ /bin/mount -o noatime,move $2/tmp /tmp
+ /bin/mount -o noatime,move $2/overlay /overlay 2>&-
+ return 0
+}
+
+switch_to_ramfs() {
+ install_bin /bin/busybox /bin/ash /bin/sh /bin/mount /bin/umount \
+ /sbin/pivot_root /sbin/reboot /bin/sync /bin/dd /bin/grep \
+ /bin/cp /bin/mv /bin/tar /usr/bin/md5sum "/usr/bin/[" /bin/dd \
+ /bin/vi /bin/ls /bin/cat /usr/bin/awk /usr/bin/hexdump \
+ /bin/sleep /bin/zcat /usr/bin/bzcat /usr/bin/printf /usr/bin/wc \
+ /bin/cut /usr/bin/printf /bin/sync /bin/mkdir /bin/rmdir \
+ /bin/rm /usr/bin/basename /bin/kill /bin/chmod /usr/bin/find \
+ /bin/mknod
+
+ install_bin /sbin/mtd
+ install_bin /sbin/mount_root
+ install_bin /sbin/snapshot
+ install_bin /sbin/snapshot_tool
+ install_bin /usr/sbin/ubiupdatevol
+ install_bin /usr/sbin/ubiattach
+ install_bin /usr/sbin/ubiblock
+ install_bin /usr/sbin/ubiformat
+ install_bin /usr/sbin/ubidetach
+ install_bin /usr/sbin/ubirsvol
+ install_bin /usr/sbin/ubirmvol
+ install_bin /usr/sbin/ubimkvol
+ install_bin /usr/sbin/partx
+ install_bin /usr/sbin/losetup
+ install_bin /usr/sbin/mkfs.ext4
+ for file in $RAMFS_COPY_BIN; do
+ install_bin ${file//:/ }
+ done
+ install_file /etc/resolv.conf /lib/*.sh /lib/functions/*.sh /lib/upgrade/*.sh $RAMFS_COPY_DATA
+
+ [ -L "/lib64" ] && ln -s /lib $RAM_ROOT/lib64
+
+ supivot $RAM_ROOT /mnt || {
+ echo "Failed to switch over to ramfs. Please reboot."
+ exit 1
+ }
+
+ /bin/mount -o remount,ro /mnt
+ /bin/umount -l /mnt
+
+ grep /overlay /proc/mounts > /dev/null && {
+ /bin/mount -o noatime,remount,ro /overlay
+ /bin/umount -l /overlay
+ }
+}
+
+kill_remaining() { # [ <signal> [ <loop> ] ]
+ local sig="${1:-TERM}"
+ local loop="${2:-0}"
+ local run=true
+ local stat
+
+ echo -n "Sending $sig to remaining processes ... "
+
+ while $run; do
+ run=false
+ for stat in /proc/[0-9]*/stat; do
+ [ -f "$stat" ] || continue
+
+ local pid name state ppid rest
+ read pid name state ppid rest < $stat+ name="${name#(}"; name="${name%)}"
+
+ # Skip PID1, ourself and our children
+ [ $pid -ne 1 -a $pid -ne $$ -a $ppid -ne $$ ] || continue
+
+ local cmdline
+ read cmdline < /proc/$pid/cmdline
+
+ # Skip kernel threads
+ [ -n "$cmdline" ] || continue
+
+ echo -n "$name "
+ kill -$sig $pid 2>/dev/null
+
+ [ $loop -eq 1 ] && run=true
+ done
+ done
+ echo ""
+}
+
+
killall -9 telnetd
killall -9 dropbear
killall -9 ash
@@ -44,7 +142,8 @@ fi
if [ -n "$(rootfs_type)" ]; then
echo "Switching to ramdisk..."
- run_ramfs "$COMMAND"
-else
- exec /bin/busybox ash -c "$COMMAND"
+ switch_to_ramfs
fi
+
+# Exec new shell from ramfs
+exec /bin/busybox ash -c "$COMMAND"
diff --git a/package/base-files/files/sbin/sysupgrade b/package/base-files/files/sbin/sysupgrade
index 2d67371ef74b4b970076a069e97f4fd6a1e0bc95..200a0e520b5df8bcc208f4d8fd731756e94294fb 100755
--- a/package/base-files/files/sbin/sysupgrade
+++ b/package/base-files/files/sbin/sysupgrade
@@ -1,7 +1,5 @@
#!/bin/sh
-[ "$1" = "nand" ] && exec /lib/upgrade/stage2 "$2" "$3"
-
. /lib/functions.sh
. /lib/functions/system.sh