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[XFS] Add op_flags field and helpers to xfs_da_args

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The end of the xfs_da_args structure has 4 unsigned char fields for
true/false information on directory and attr operations using the
xfs_da_args structure.

The following converts these 4 into a op_flags field that uses the first 4
bits for these fields and allows expansion for future operation
information (eg. case-insensitive lookup request).

SGI-PV: 981520
SGI-Modid: xfs-linux-melb:xfs-kern:31206a

Signed-off-by: Barry Naujok <bnaujok@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
This commit is contained in:
Barry Naujok
2008-05-21 16:42:05 +10:00
committed by Niv Sardi
parent 5163f95a08
commit 6a178100ab
10 changed files with 71 additions and 58 deletions
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13
fs/xfs/xfs_da_btree.h
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@@ -132,13 +132,18 @@ typedef struct xfs_da_args {
int index2; /* index of 2nd attr in blk */
xfs_dablk_t rmtblkno2; /* remote attr value starting blkno */
int rmtblkcnt2; /* remote attr value block count */
unsigned char justcheck; /* T/F: check for ok with no space */
unsigned char rename; /* T/F: this is an atomic rename op */
unsigned char addname; /* T/F: this is an add operation */
unsigned char oknoent; /* T/F: ok to return ENOENT, else die */
int op_flags; /* operation flags */
enum xfs_dacmp cmpresult; /* name compare result for lookups */
} xfs_da_args_t;
/*
* Operation flags:
*/
#define XFS_DA_OP_JUSTCHECK 0x0001 /* check for ok with no space */
#define XFS_DA_OP_RENAME 0x0002 /* this is an atomic rename op */
#define XFS_DA_OP_ADDNAME 0x0004 /* this is an add operation */
#define XFS_DA_OP_OKNOENT 0x0008 /* lookup/add op, ENOENT ok, else die */
/*
* Structure to describe buffer(s) for a block.
* This is needed in the directory version 2 format case, when