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Diffstat (limited to 'doc/mac-related-xattrs.txt')
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diff --git a/doc/mac-related-xattrs.txt b/doc/mac-related-xattrs.txt new file mode 100644 index 00000000000..805658334e6 --- /dev/null +++ b/doc/mac-related-xattrs.txt @@ -0,0 +1,21 @@ + +This document is intended to briefly explain how the Extended Attributes on +Darwin 10.5.x releases works +---- + +On Darwin other than all the normal filesystem operations, 'Finder' (like +Explorer in Windows but a little more) keeps its information in two extended +attributes named 'com.apple.FinderInfo' and 'com.apple.ResourceFork'. If these +xattrs are not implemented the filesystem won't be shown on Finder, and if they +are not implemented properly there may be issues when some of the file operations +are done through GUI of Finder. But when a filesystem is used over mountpoint in a +terminal, everything is fine and these xattrs are not required. + +Currently the way these xattrs are implemented is simple. All the xattr calls +(getxattr, setxattr, listxattr, removexattr) are passed down to underlaying filesystem, +most of the cases when exported FS is on MacOS X itself, these keys are supported, hence +the fops succeed. But in the case of using exports of different OS on Darwin the issue is +extended attribute prefix like 'com.apple.' may not be supported, hence the problem with +Finder. To solve this issue, GlusterFS returns virtual default values to these keys, which +works fine on most of the cases. + |