[dunfell][PATCH v2] sstate: another fix for touching files inside pseudo

[dunfell][PATCH v2] sstate: another fix for touching files inside pseudo

[Jose Quaresma]

This patch is a fixup for 676757f "sstate: fix touching files inside pseudo"

running the 'id' command inside the sstate_unpack_package
function shows that this funcion run inside the pseudo:

 uid=0(root) gid=0(root) groups=0(root)

The check for [ -w ${SSTATE_PKG} ] and [ -O ${SSTATE_PKG}.siginfo ]
will always return true and the touch can fail when the real user
don't have permission or in readonly filesystem.

As the documentation refers:
- the file test operator "-w" check if the file has write permission
(for the user running the test).
- the file test operator "-O" check if you are owner of file

We can avoid this test running the touch and mask any return errors
that we have.

(From OE-Core rev: 29fc85997ade490ae46ffca37ef8e1a56957c876)

Signed-off-by: Jose Quaresma <quaresma.jose@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 5b9210d66c78bb3f79056e5586cea7b0edd714a9)
---

The patch sent to master branch don't apply on dunfell branch
because of the ZSTD changes.

V2: match the original code

 meta/classes/sstate.bbclass | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/meta/classes/sstate.bbclass b/meta/classes/sstate.bbclass
index 38dc3bff30..930d87424f 100644
--- a/meta/classes/sstate.bbclass
+++ b/meta/classes/sstate.bbclass
@@ -859,12 +859,12 @@ python sstate_report_unihash() {
 #
 sstate_unpack_package () {
 	tar -xvzf ${SSTATE_PKG}
-	# update .siginfo atime on local/NFS mirror
-	[ -O ${SSTATE_PKG}.siginfo ] && [ -w ${SSTATE_PKG}.siginfo ] && [ -h ${SSTATE_PKG}.siginfo ] && touch -a ${SSTATE_PKG}.siginfo
-	# Use "! -w ||" to return true for read only files
-	[ ! -w ${SSTATE_PKG} ] || touch --no-dereference ${SSTATE_PKG}
-	[ ! -w ${SSTATE_PKG}.sig ] || [ ! -e ${SSTATE_PKG}.sig ] || touch --no-dereference ${SSTATE_PKG}.sig
-	[ ! -w ${SSTATE_PKG}.siginfo ] || [ ! -e ${SSTATE_PKG}.siginfo ] || touch --no-dereference ${SSTATE_PKG}.siginfo
+	# update .siginfo atime on local/NFS mirror if it is a symbolic link
+	[ ! -h ${SSTATE_PKG}.siginfo ] || touch -a ${SSTATE_PKG}.siginfo 2>/dev/null || true
+	# update each symbolic link instead of any referenced file
+	touch --no-dereference ${SSTATE_PKG} 2>/dev/null || true
+	[ ! -e ${SSTATE_PKG}.sig ] || touch --no-dereference ${SSTATE_PKG}.sig 2>/dev/null || true
+	[ ! -e ${SSTATE_PKG}.siginfo ] || touch --no-dereference ${SSTATE_PKG}.siginfo 2>/dev/null || true
 }
 
 BB_HASHCHECK_FUNCTION = "sstate_checkhashes"
-- 
2.33.1