22 lines
1.2 KiB
Plaintext
22 lines
1.2 KiB
Plaintext
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This document is intended to briefly explain how the Extended Attributes on
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Darwin 10.5.x releases works
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On Darwin other than all the normal filesystem operations, 'Finder' (like
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Explorer in Windows but a little more) keeps its information in two extended
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attributes named 'com.apple.FinderInfo' and 'com.apple.ResourceFork'. If these
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xattrs are not implemented the filesystem won't be shown on Finder, and if they
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are not implemented properly there may be issues when some of the file operations
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are done through GUI of Finder. But when a filesystem is used over mountpoint in a
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terminal, everything is fine and these xattrs are not required.
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Currently the way these xattrs are implemented is simple. All the xattr calls
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(getxattr, setxattr, listxattr, removexattr) are passed down to underlaying filesystem,
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most of the cases when exported FS is on MacOS X itself, these keys are supported, hence
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the fops succeed. But in the case of using exports of different OS on Darwin the issue is
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extended attribute prefix like 'com.apple.' may not be supported, hence the problem with
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Finder. To solve this issue, GlusterFS returns virtual default values to these keys, which
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works fine on most of the cases.
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