CVS commit: src/external/bsd/atf/dist/atf-run

["Julio Merino" <jmmv%netbsd.org@localhost>]

Module Name:    src
Committed By:   jmmv
Date:           Wed Mar 30 11:10:56 UTC 2011

Modified Files:
        src/external/bsd/atf/dist/atf-run: fs.cpp

Log Message:
Pull up upstream revision 648ed6360b2b7cda81a6079b00dc436d09c745b8:

Retry calls that raise file system errors during cleanup

If a test case mounts user-space (puffs/fuse) file systems or spawns
server processes that create pid files, the termination of the
corresponding processes does not guarantee that the file system is
left in a consistent state immediately.  The cleanup routines of both
components (file systems and daemons) may still be running.

This situation causes a race condition between the termination of the
auxiliary processes and our own file system cleanup: the file system
calls performed from within the cleanup routine may raise errors
because the file system is still changing underneath.  (E.g. we first
enumerate the contents of a directory and get file X, but when we
attempt to delete file X, it may be gone.)

Deal with this by retrying failing file system calls a few times and
ignoring "expected" errors before giving up.


To generate a diff of this commit:
cvs rdiff -u -r1.1.1.3 -r1.2 src/external/bsd/atf/dist/atf-run/fs.cpp

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.