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authorGravatar Joey Hess <joey@kitenet.net>2014-08-20 11:25:07 -0400
committerGravatar Joey Hess <joey@kitenet.net>2014-08-20 11:37:02 -0400
commitb44e74ace2d74954c503930b9edb75d0aa9d7b52 (patch)
treef07fa949063d3e93987dad89e3348e6d8b692b76 /Annex/Transfer.hs
parent5fda2e3cb3f93771fb70a3ccbf88eeaf4e7f924a (diff)
Ensure that all lock fds are close-on-exec, fixing various problems with them being inherited by child processes such as git commands.
(With the exception of daemon pid locking.) This fixes at part of #758630. I reproduced the assistant locking eg, a removable drive's annex journal lock file and forking a long-running git-cat-file process that inherited that lock. This did not affect Windows. Considered doing a portable Utility.LockFile layer, but git-annex uses posix locks in several special ways that have no direct Windows equivilant, and it seems like it would mostly be a complication. This commit was sponsored by Protonet.
Diffstat (limited to 'Annex/Transfer.hs')
-rw-r--r--Annex/Transfer.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/Annex/Transfer.hs b/Annex/Transfer.hs
index 5e98a87d9..ec17609ea 100644
--- a/Annex/Transfer.hs
+++ b/Annex/Transfer.hs
@@ -81,6 +81,7 @@ runTransfer' ignorelock t file shouldretry a = do
case mfd of
Nothing -> return (Nothing, False)
Just fd -> do
+ setFdOption fd CloseOnExec True
locked <- catchMaybeIO $
setLock fd (WriteLock, AbsoluteSeek, 0, 0)
if isNothing locked