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kpatch: single enabled dir

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Programs aren't supposed to touch /usr/lib, so use a new backend
directory scheme:
- /var/lib/kpatch/<version>/enabled for all symlinks
- /var/lib/kpatch/<version> for user installed
- /usr/lib/kpatch/<version> for system installed
This commit is contained in:
Josh Poimboeuf 2014-02-14 10:33:08 -06:00
parent e1936f1e0f
commit 3779e9decc
1 changed files with 23 additions and 32 deletions
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55
kpatch/kpatch
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@ -16,8 +16,9 @@
# currently running one
KERNELRELEASE="$(uname -r)"
VARDIR="/var/lib/kpatch/$KERNELRELEASE"
USRDIR="/usr/lib/kpatch/$KERNELRELEASE"
SYSDIR="/usr/lib/kpatch/$KERNELRELEASE"
USERDIR="/var/lib/kpatch/$KERNELRELEASE"
ENABLEDDIR="$USERDIR/enabled"
TOOLSDIR=/usr/local/libexec/kpatch
usage () {
@ -41,10 +42,10 @@ die() {
exit 1
}
# return either VARDIR or USRDIR
# return full module path in DIR
find_patch () {
[[ -f "$VARDIR/available/$1" ]] && DIR="$VARDIR" && return
[[ -f "$USRDIR/available/$1" ]] && DIR="$USRDIR" && return
[[ -f "$USERDIR/$1" ]] && DIR="$USERDIR" && return
[[ -f "$SYSDIR/$1" ]] && DIR="$SYSDIR" && return
return 1
}
@ -69,9 +70,9 @@ case "$1" in
PATCH=$2
MODFILE="$PATCH.ko"
find_patch "$MODFILE" || die "$PATCH is not installed"
[[ -e "$DIR/enabled/$MODFILE" ]] && die "patch $2 is already enabled"
mkdir -p $DIR/enabled
ln -s "$DIR/available/$MODFILE" "$DIR/enabled/$MODFILE" || die "failed to enable patch $PATCH"
[[ -e "$ENABLEDDIR/$MODFILE" ]] && die "patch $2 is already enabled"
mkdir -p $ENABLEDDIR
ln -s "$DIR/$MODFILE" "$ENABLEDDIR/$MODFILE" || die "failed to enable patch $PATCH"
;;
"disable")
@ -79,28 +80,24 @@ case "$1" in
PATCH=$2
MODFILE="$PATCH.ko"
find_patch "$MODFILE" || die "$PATCH is not installed"
[[ ! -e "$DIR/enabled/$MODFILE" ]] && die "$PATCH is already disabled"
rm -f "$DIR/enabled/$MODFILE" || die "failed to disable patch $PATCH"
[[ ! -e "$ENABLEDDIR/$MODFILE" ]] && die "$PATCH is already disabled"
rm -f "$ENABLEDDIR/$MODFILE" || die "failed to disable patch $PATCH"
;;
"load")
[[ "$#" -ne 2 ]] && usage
case "$2" in
"--all")
for i in "$VARDIR"/enabled/*.ko; do
for i in "$ENABLEDDIR"/*.ko; do
[[ -e "$i" ]] || continue
load_patch "$VARDIR/enabled/$i" || die "failed to load patch $PATCH"
done
for i in "$USRDIR"/enabled/*.ko; do
[[ -e "$i" ]] || continue
load_patch "$USRDIR/enabled/$i" || die "failed to load patch $PATCH"
load_patch "$i" || die "failed to load patch $PATCH"
done
;;
*)
PATCH="$2"
MODFILE="$PATCH.ko"
find_patch "$MODFILE" || die "$PATCH is not installed"
load_patch "$DIR/available/$MODFILE" || die "failed to load patch $PATCH"
load_patch "$DIR/$MODFILE" || die "failed to load patch $PATCH"
;;
esac
;;
@ -109,11 +106,11 @@ case "$1" in
[[ "$#" -ne 2 ]] && usage
case "$2" in
"--all")
for i in "$VARDIR"/available/*.ko; do
for i in "$SYSDIR"/*.ko; do
[[ -e "$i" ]] || continue
unload_patch "${i%.*}" || die "failed to unload patch $PATCH"
done
for i in "$USRDIR"/available/*.ko; do
for i in "$USERDIR"/*.ko; do
[[ -e "$i" ]] || continue
unload_patch "${i%.*}" || die "failed to unload patch $PATCH"
done
@ -129,26 +126,20 @@ case "$1" in
"list")
[[ "$#" -ne 1 ]] && usage
echo "User patches available:"
for i in "$VARDIR"/available/*.ko; do
echo "System patches:"
for i in "$SYSDIR"/*.ko; do
[[ -e "$i" ]] || continue
echo "$(basename ${i%.*})"
done
echo ""
echo "User patches enabled:"
for i in "$VARDIR"/enabled/*.ko; do
echo "User patches:"
for i in "$USERDIR"/*.ko; do
[[ -e "$i" ]] || continue
echo "$(basename ${i%.*})"
done
echo ""
echo "System patches available:"
for i in "$USRDIR"/available/*.ko; do
[[ -e "$i" ]] || continue
echo "$(basename ${i%.*})"
done
echo ""
echo "System patches enabled:"
for i in "$USRDIR"/enabled/*.ko; do
echo "Enabled patches:"
for i in "$ENABLEDDIR"/*.ko; do
[[ -e "$i" ]] || continue
echo "$(basename ${i%.*})"
done
@ -160,7 +151,7 @@ case "$1" in
MODFILE="$PATCH.ko"
find_patch "$MODFILE" || die "$PATCH is not installed"
echo "Patch information for $PATCH:"
/usr/sbin/modinfo "$DIR/available/$MODFILE"
/usr/sbin/modinfo "$DIR/$MODFILE"
;;
"build")