Initial checkin of libvncserver external library
Change-Id: Ie7c0947e3184490a566a63981ca9baaad2fbcaa3
diff --git a/x11vnc/misc/shm_clear b/x11vnc/misc/shm_clear
new file mode 100755
index 0000000..16d5cb6
--- /dev/null
+++ b/x11vnc/misc/shm_clear
@@ -0,0 +1,97 @@
+#!/bin/sh
+#
+# shm_clear: clean out unattached (NATTACH=0) shm segments.
+# See ipcs(1) and ipcrm(1). Tested on Linux and Solaris.
+#
+# Usage:
+# shm_clear list and prompt for removal of your unattached shm segments.
+# shm_clear -y assume "yes" to all the removal prompts.
+# shm_clear -l only list (all of) your shm segments and exit.
+#
+
+#set -xv
+if echo "$1" | grep '^-h' > /dev/null; then
+ # -h or -help
+ tail +3 $0 | head -9
+ exit
+fi
+
+if [ "X$USER" = "X" ]; then
+ USER=$LOGNAME
+fi
+l_arg="shmid.*owner|CREATOR|$USER"
+
+# set up OS dependent cmdline opts, etc.
+if [ `uname` = "Linux" ]; then
+ m_arg="-m"
+ r_arg="shm"
+ g_arg="^0x"
+ s_cmd="ipcs $m_arg -i %ID"
+ awkcut='{print $2, $6}'
+elif [ `uname` = "SunOS" ]; then
+ m_arg="-ma"
+ r_arg="-m"
+ g_arg="^m"
+ s_cmd="ipcs $m_arg | egrep ' %ID |CREATOR' | grep -v IPC.status"
+ awkcut='{print $2, $9}'
+else
+ echo unsupported OS: `uname`
+ exit 1
+fi
+
+list() {
+ if [ "X$1" = "X-L" ]; then
+ l_arg="$l_arg|."
+ echo "All shm segments for all:"
+ else
+ echo "All shm segments for $USER:"
+ fi
+ ipcs $m_arg | egrep "$l_arg"
+ echo
+}
+
+show() {
+ cmd=`echo "$s_cmd" | sed -e "s/%ID/$1/g"`
+ eval $cmd
+}
+
+remove() {
+ echo ipcrm $r_arg $1
+ ipcrm $r_arg $1
+}
+
+if [ "X$1" = "X-l" -o "X$1" = "X-L" ]; then
+ # list only. both attached and unattached listed.
+ list $1
+ exit 0
+fi
+
+if [ "X$1" = "X-y" ]; then
+ shift
+ yes=1 # assume "yes" to all delete questions.
+else
+ yes=""
+fi
+
+list
+
+ids=`ipcs $m_arg | grep "$g_arg" | grep $USER | awk "$awkcut" | grep ' 0$' | awk '{print $1}'`
+if [ "X$ids" = "X" ]; then
+ echo "No unattached shmids for $USER."
+fi
+
+for id in $ids
+do
+ if [ $yes ]; then
+ :
+ else
+ echo "-------------------------------------"
+ show $id
+ printf "\nDelete? [y]/n "
+ read x
+ if echo "$x" | grep -i n > /dev/null; then
+ continue
+ fi
+ fi
+ remove $id
+done
