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authorLars Hjemli2006-12-11 22:53:50 +0100
committerLars Hjemli2006-12-11 22:53:50 +0100
commitfbaf1171b4e343929dd43ecac7cd9d1c692b84ec (patch)
tree40b7007b2e1e85f2e91e052b33555df2e9fb5e14 /Makefile
parentMove global variables + callback functions into shared.c (diff)
downloadcgit-fbaf1171b4e343929dd43ecac7cd9d1c692b84ec.tar.gz
cgit-fbaf1171b4e343929dd43ecac7cd9d1c692b84ec.zip
Don't truncate valid cachefiles
An embarrassing thinko in cgit_check_cache() would truncate valid cachefiles
in the following situation:
  1) process A notices a missing/expired cachefile
  2) process B gets scheduled, locks, fills and unlocks the cachefile
  3) process A gets scheduled, locks the cachefile, notices that the cachefile
     now exist/is not expired anymore, and continues to overwrite it with an
     empty lockfile.

Thanks to Linus for noticing (again).

Signed-off-by: Lars Hjemli <hjemli@gmail.com>
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