quilt: run tests as ptest user, and let that user write into the tests

The tests need to run as a non-root user, but that user also needs to be
able to write into the tests directory to create the work directories.

Use the new ptest user that ptest-runner creates to avoid having to add
a new user, and ensure that the test/ directory is owned by the ptest
group and that group has write access.

This solves the ptest regression where since oe-core 9a287b4 no quilt
tests were actually running.

A better solution would be to allow the tests to create a work directory
in another directory, but that would need work upstream which can happen
later.

(From OE-Core rev: 70dc9c114283cde18771287fb17fcebc537e7387)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/quilt/quilt.inc

@@ -61,6 +61,9 @@ do_install:append:class-native () {
     touch ${D}${sysconfdir}/quiltrc
 }
 
+# The tests need to run as a non-root user, so pull in the ptest user
+DEPENDS:append:class-target = "${@bb.utils.contains('PTEST_ENABLED', '1', ' ptest-runner', '', d)}"
+
 do_install_ptest() {
 	install ${WORKDIR}/test.sh ${D}${PTEST_PATH}
     mkdir ${D}${PTEST_PATH}/test
@@ -69,6 +72,14 @@ do_install_ptest() {
     rm -f ${D}${PTEST_PATH}/test/mail.test ${D}${PTEST_PATH}/test/patch-wrapper.test
 }
 
+# ptest.bbclass currently chowns the ptest directory explicitly, so we need to
+# change permission after that has happened so the ptest user can write a
+# temporary directory.
+do_install_ptest_base:append() {
+    chgrp ptest ${D}${PTEST_PATH}/test
+    chmod g+w ${D}${PTEST_PATH}/test
+}
+
 PACKAGES += "guards guards-doc"
 
 FILES:${PN} = "${sysconfdir} ${datadir}/quilt \
@@ -84,5 +95,5 @@ RDEPENDS:${PN}-ptest += "file sed gawk diffutils findutils ed perl \
                          perl-module-filehandle perl-module-getopt-std \
                          perl-module-posix perl-module-file-temp \
                          perl-module-text-parsewords perl-module-overloading \
-                         bash util-linux-getopt \
+                         bash util-linux-getopt ptest-runner \
                         "

meta/recipes-devtools/quilt/quilt/run-ptest

@@ -1,7 +1,3 @@
 #!/bin/sh
 
-/usr/sbin/adduser --disabled-password --gecos "" quilttest
-
-su -c ./test.sh quilttest
-
-/usr/sbin/deluser quilttest
+su -c ./test.sh ptest