Avoid race condition crash when a directory is swapped for a file #513
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This commit builds off the race condition checking introduced in 2e83199, but also correctly handles the case where a directory is replaced with a file before it can be walked. For example: 1. [external] create /a/b/c.txt 2. [watchdog] walk /a (contains directory /a/b/ at this point) 3. [external] rm -rf /a/b/ 4. [external] touch /a/b 5. [watchdog] walk /a/b/ (raises NotADirectoryError/ENOTDIR) Also adds a test case that runs through the above example to ensure that an exception is no longer raised.
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Thanks @pR0Ps :) |
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This commit builds off the race condition checking introduced in 2e83199, but also correctly handles the case where a directory is replaced with a file before it can be walked.
For example:
/a/b/c.txt/a(contains directory/a/b/at this point)rm -rf /a/b/touch /a/b/a/b/(raisesNotADirectoryError/ENOTDIR)Also adds a test case that runs through the above example to ensure that an exception is no longer raised.