Max Bowsher wrote: > When running 'gpg --refresh-keys', the second updated key results in: > > gpg: renaming `/home/max/.gnupg/pubring.gpg' to > `/home/max/.gnupg/pubring.gpg~' failed: Permission denied > gpg: error writing keyring `/home/max/.gnupg/pubring.gpg': file rename error > gpg: key XXXXXXXX: "...." 28 new signatures > gpg: error reading `[stream]': file rename error > > > Given that: > * this happens for the *second* updated key > > * having another process running at the same time, rapidly moving away > any new pubring.gpg~ files avoids the error > > * it is presumably Cygwin-specific > > it seems extremely likely that gnupg has a file descriptor leak, such > that when the second key is processed, gnupg still has an open file > descriptor on the file pubring.gpg~ when it attempts to overwrite it by > renaming another file onto that name. Windows then objects.
Replying to my own mail... GPG for some reason tries to cache opened fds for re-use. I suggest disabling this caching for Cygwin. The appropriate code to tweak is in util/iobuf.c:fd_cache_close(). I changed the condition of the first if statement there to always be true, and the problem I reported goes away. Please integrate this into the Cygwin packages. Thanks, Max.
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