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withlock
withlock-0.5-fixboo864785.patch
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File withlock-0.5-fixboo864785.patch of Package withlock
https://github.com/poeml/withlock/pull/5 From 218831d810b44675c948786d3ce4d3d3180e83e0 Mon Sep 17 00:00:00 2001 From: "Bernhard M. Wiedemann" <bwiedemann@suse.de> Date: Sun, 1 Jan 2023 14:43:26 +0100 Subject: [PATCH] Re-open lock file before locking because the previous 'withlock' cleanup function might have deleted the file and since we still held a handle to the old deleted file, we could run concurrently with a 3rd 'withlock' which creates a new file. Fixes #1 Fixes boo#864785 Signed-off-by: Bernhard M. Wiedemann <bwiedemann@suse.de> --- withlock | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/withlock b/withlock index 01ef866..9e16f69 100755 --- a/withlock +++ b/withlock @@ -137,12 +137,11 @@ def main(): prev_umask = os.umask(0o066) - lock = open(lockfile, 'w') - global got_lock while 1 + 1 == 2: try: + lock = open(lockfile, 'w') fcntl.lockf(lock, fcntl.LOCK_EX | fcntl.LOCK_NB) got_lock = True break
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