diff options
author | Barry Naujok <bnaujok@sgi.com> | 2008-05-21 02:41:01 -0400 |
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committer | Niv Sardi <xaiki@debian.org> | 2008-07-28 02:58:36 -0400 |
commit | 5163f95a08cbf058ae16452c2242c5600fedc32e (patch) | |
tree | 5d6b905f7031144a62fb1fa17ba3106d99268003 /fs/xfs/xfs_iomap.h | |
parent | 68f34d5107dbace3d14a1c2f060fc8941894879c (diff) |
[XFS] Name operation vector for hash and compare
Adds two pieces of functionality for the basis of case-insensitive support
in XFS:
1. A comparison result enumerated type: xfs_dacmp. It represents an
exact match, case-insensitive match or no match at all. This patch
only implements different and exact results.
2. xfs_nameops vector for specifying how to perform the hash generation
of filenames and comparision methods. In this patch the hash vector
points to the existing xfs_da_hashname function and the comparison
method does a length compare, and if the same, does a memcmp and
return the xfs_dacmp result.
All filename functions that use the hash (create, lookup remove, rename,
etc) now use the xfs_nameops.hashname function and all directory lookup
functions also use the xfs_nameops.compname function.
The lookup functions also handle case-insensitive results even though the
default comparison function cannot return that. And important aspect of
the lookup functions is that an exact match always has precedence over a
case-insensitive. So while a case-insensitive match is found, we have to
keep looking just in case there is an exact match. In the meantime, the
info for the first case-insensitive match is retained if no exact match is
found.
SGI-PV: 981519
SGI-Modid: xfs-linux-melb:xfs-kern:31205a
Signed-off-by: Barry Naujok <bnaujok@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Diffstat (limited to 'fs/xfs/xfs_iomap.h')
0 files changed, 0 insertions, 0 deletions