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authorJohn Crispin <john@openwrt.org>2014-07-10 19:16:27 +0000
committerJohn Crispin <john@openwrt.org>2014-07-10 19:16:27 +0000
commitbe26421f455e392178c98328d142d1d2494e0ede (patch)
tree45330fe77411b14abcf892dde404870859ecb5d4
parentf8f66785748ea3f3ae049a836b14c5c24880b67c (diff)
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sysupgrade: Enable killing of all processes under upgraded
If the sysupgrade scripts is called under upgraded, it will not kill all other processes as it should to avoid interference by locked filesystem. This patch checks the parent and if it is upgraded, it kills all. Signed-off-by: André Valentin <avalentin@marcant.net> SVN-Revision: 41563
-rw-r--r--package/base-files/files/lib/upgrade/common.sh39
1 files changed, 27 insertions, 12 deletions
diff --git a/package/base-files/files/lib/upgrade/common.sh b/package/base-files/files/lib/upgrade/common.sh
index 6f1880f..ba9de99 100644
--- a/package/base-files/files/lib/upgrade/common.sh
+++ b/package/base-files/files/lib/upgrade/common.sh
@@ -99,6 +99,13 @@ kill_remaining() { # [ <signal> ]
local sig="${1:-TERM}"
echo -n "Sending $sig to remaining processes ... "
+ local my_pid=$$
+ local my_ppid=$(cut -d' ' -f4 /proc/$my_pid/stat)
+ local my_ppisupgraded=
+ grep -q upgraded /proc/$my_ppid/cmdline >/dev/null && {
+ local my_ppisupgraded=1
+ }
+
local stat
for stat in /proc/[0-9]*/stat; do
[ -f "$stat" ] || continue
@@ -113,18 +120,26 @@ kill_remaining() { # [ <signal> ]
# Skip kernel threads
[ -n "$cmdline" ] || continue
- case "$name" in
- # Skip essential services
- *procd*|*upgraded*|*ash*|*init*|*watchdog*|*ssh*|*dropbear*|*telnet*|*login*|*hostapd*|*wpa_supplicant*|*nas*) : ;;
-
- # Killable process
- *)
- if [ $pid -ne $$ ] && [ $ppid -ne $$ ]; then
- echo -n "$name "
- kill -$sig $pid 2>/dev/null
- fi
- ;;
- esac
+ if [ $$ -eq 1 ] || [ $my_ppid -eq 1 ] && [ -n "$my_ppisupgraded" ]; then
+ # Running as init process, kill everything except me
+ if [ $pid -ne $$ ] && [ $pid -ne $my_ppid ]; then
+ echo -n "$name "
+ kill -$sig $pid 2>/dev/null
+ fi
+ else
+ case "$name" in
+ # Skip essential services
+ *procd*|*ash*|*init*|*watchdog*|*ssh*|*dropbear*|*telnet*|*login*|*hostapd*|*wpa_supplicant*|*nas*) : ;;
+
+ # Killable process
+ *)
+ if [ $pid -ne $$ ] && [ $ppid -ne $$ ]; then
+ echo -n "$name "
+ kill -$sig $pid 2>/dev/null
+ fi
+ ;;
+ esac
+ fi
done
echo ""
}