fat: ->i_pos race fix

[linux-2.6-omap-h63xx.git] / fs / xfs / xfs_da_btree.h

diff --git a/fs/xfs/xfs_da_btree.h b/fs/xfs/xfs_da_btree.h
index 44dabf02f2a3ca99c844101fa213a000949fed0f..8be0b00ede9aafc83970a23e4ad9c7df2565b54d 100644 (file)
--- a/fs/xfs/xfs_da_btree.h
+++ b/fs/xfs/xfs_da_btree.h
@@ -98,6 +98,15 @@ typedef struct xfs_da_node_entry xfs_da_node_entry_t;
  * Btree searching and modification structure definitions.
  *========================================================================*/
 
+/*
+ * Search comparison results
+ */
+enum xfs_dacmp {
+       XFS_CMP_DIFFERENT,      /* names are completely different */
+       XFS_CMP_EXACT,          /* names are exactly the same */
+       XFS_CMP_CASE            /* names are same but differ in case */
+};
+
 /*
  * Structure to ease passing around component names.
  */
@@ -123,12 +132,19 @@ 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 */
+#define XFS_DA_OP_CILOOKUP     0x0010  /* lookup to return CI name if found */
+
 /*
  * Structure to describe buffer(s) for a block.
  * This is needed in the directory version 2 format case, when
@@ -201,6 +217,14 @@ typedef struct xfs_da_state {
                (uint)(XFS_DA_LOGOFF(BASE, ADDR)), \
                (uint)(XFS_DA_LOGOFF(BASE, ADDR)+(SIZE)-1)
 
+/*
+ * Name ops for directory and/or attr name operations
+ */
+struct xfs_nameops {
+       xfs_dahash_t    (*hashname)(struct xfs_name *);
+       enum xfs_dacmp  (*compname)(struct xfs_da_args *, const char *, int);
+};
+
 
 #ifdef __KERNEL__
 /*========================================================================
@@ -249,6 +273,10 @@ int        xfs_da_shrink_inode(xfs_da_args_t *args, xfs_dablk_t dead_blkno,
                                          xfs_dabuf_t *dead_buf);
 
 uint xfs_da_hashname(const uchar_t *name_string, int name_length);
+enum xfs_dacmp xfs_da_compname(struct xfs_da_args *args,
+                               const char *name, int len);
+
+
 xfs_da_state_t *xfs_da_state_alloc(void);
 void xfs_da_state_free(xfs_da_state_t *state);
 
@@ -260,6 +288,7 @@ void xfs_da_binval(struct xfs_trans *tp, xfs_dabuf_t *dabuf);
 xfs_daddr_t xfs_da_blkno(xfs_dabuf_t *dabuf);
 
 extern struct kmem_zone *xfs_da_state_zone;
+extern struct kmem_zone *xfs_dabuf_zone;
 #endif /* __KERNEL__ */
 
 #endif /* __XFS_DA_BTREE_H__ */