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sstate.bbclass: Remove possibility of file corruption and make package writing atomic 

There is currently a race window when creating sstate packages since we don't
atomically write the files to SSTATE_DIR. This change ensures we do so by writing
to a temporary file and then doing an atomic move.

(From OE-Core rev: 52bf113e786a57123a9da98f64442afbc2f1471e)

(From OE-Core rev: d527f68bdf167b4a3dcc035968da59677abb70bb)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Joshua Lock <josh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Purdie 2012-03-22 22:47:24 +00:00
parent 36e13dd42f
commit 67334bfb26
1 changed files with 4 additions and 2 deletions
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6
meta/classes/sstate.bbclass
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@ -453,12 +453,14 @@ python sstate_task_postfunc () {
#
sstate_create_package () {
cd ${SSTATE_BUILDDIR}
TFILE=`mktemp ${SSTATE_PKG}.XXXXXXXX`
# Need to handle empty directories
if [ "$(ls -A)" ]; then
tar -czf ${SSTATE_PKG} *
tar -czf $TFILE *
else
tar -cz --file=${SSTATE_PKG} --files-from=/dev/null
tar -cz --file=$TFILE --files-from=/dev/null
fi
mv $TFILE ${SSTATE_PKG}
cd ${WORKDIR}
rm -rf ${SSTATE_BUILDDIR}