/*
- * Copyright (c) 2000, 2002 Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright (c) 2000,2002,2005 Silicon Graphics, Inc.
+ * All Rights Reserved.
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_DA_BTREE_H__
#define __XFS_DA_BTREE_H__
* level in the Btree, and to identify which type of block this is.
*/
#define XFS_DA_NODE_MAGIC 0xfebe /* magic number: non-leaf blocks */
-#define XFS_DIR_LEAF_MAGIC 0xfeeb /* magic number: directory leaf blks */
#define XFS_ATTR_LEAF_MAGIC 0xfbee /* magic number: attribute leaf blks */
#define XFS_DIR2_LEAF1_MAGIC 0xd2f1 /* magic number: v2 dirlf single blks */
#define XFS_DIR2_LEAFN_MAGIC 0xd2ff /* magic number: v2 dirlf multi blks */
-#define XFS_DIRX_LEAF_MAGIC(mp) \
- (XFS_DIR_IS_V1(mp) ? XFS_DIR_LEAF_MAGIC : XFS_DIR2_LEAFN_MAGIC)
-
typedef struct xfs_da_blkinfo {
- xfs_dablk_t forw; /* previous block in list */
- xfs_dablk_t back; /* following block in list */
- __uint16_t magic; /* validity check on block */
- __uint16_t pad; /* unused */
+ __be32 forw; /* previous block in list */
+ __be32 back; /* following block in list */
+ __be16 magic; /* validity check on block */
+ __be16 pad; /* unused */
} xfs_da_blkinfo_t;
/*
typedef struct xfs_da_intnode {
struct xfs_da_node_hdr { /* constant-structure header block */
xfs_da_blkinfo_t info; /* block type, links, etc. */
- __uint16_t count; /* count of active entries */
- __uint16_t level; /* level above leaves (leaf == 0) */
+ __be16 count; /* count of active entries */
+ __be16 level; /* level above leaves (leaf == 0) */
} hdr;
struct xfs_da_node_entry {
- xfs_dahash_t hashval; /* hash value for this descendant */
- xfs_dablk_t before; /* Btree block before this key */
+ __be32 hashval; /* hash value for this descendant */
+ __be32 before; /* Btree block before this key */
} btree[1]; /* variable sized array of keys */
} xfs_da_intnode_t;
typedef struct xfs_da_node_hdr xfs_da_node_hdr_t;
typedef struct xfs_da_node_entry xfs_da_node_entry_t;
-#define XFS_DA_MAXHASH ((xfs_dahash_t)-1) /* largest valid hash value */
-
-/*
- * Macros used by directory code to interface to the filesystem.
- */
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LBSIZE)
-int xfs_lbsize(struct xfs_mount *mp);
-#define XFS_LBSIZE(mp) xfs_lbsize(mp)
-#else
-#define XFS_LBSIZE(mp) ((mp)->m_sb.sb_blocksize)
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_LBLOG)
-int xfs_lblog(struct xfs_mount *mp);
-#define XFS_LBLOG(mp) xfs_lblog(mp)
-#else
-#define XFS_LBLOG(mp) ((mp)->m_sb.sb_blocklog)
-#endif
-
-/*
- * Macros used by directory code to interface to the kernel
- */
-
-/*
- * Macros used to manipulate directory off_t's
- */
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DA_MAKE_BNOENTRY)
-__uint32_t xfs_da_make_bnoentry(struct xfs_mount *mp, xfs_dablk_t bno,
- int entry);
-#define XFS_DA_MAKE_BNOENTRY(mp,bno,entry) \
- xfs_da_make_bnoentry(mp,bno,entry)
-#else
-#define XFS_DA_MAKE_BNOENTRY(mp,bno,entry) \
- (((bno) << (mp)->m_dircook_elog) | (entry))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DA_MAKE_COOKIE)
-xfs_off_t xfs_da_make_cookie(struct xfs_mount *mp, xfs_dablk_t bno, int entry,
- xfs_dahash_t hash);
-#define XFS_DA_MAKE_COOKIE(mp,bno,entry,hash) \
- xfs_da_make_cookie(mp,bno,entry,hash)
-#else
-#define XFS_DA_MAKE_COOKIE(mp,bno,entry,hash) \
- (((xfs_off_t)XFS_DA_MAKE_BNOENTRY(mp, bno, entry) << 32) | (hash))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DA_COOKIE_HASH)
-xfs_dahash_t xfs_da_cookie_hash(struct xfs_mount *mp, xfs_off_t cookie);
-#define XFS_DA_COOKIE_HASH(mp,cookie) xfs_da_cookie_hash(mp,cookie)
-#else
-#define XFS_DA_COOKIE_HASH(mp,cookie) ((xfs_dahash_t)(cookie))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DA_COOKIE_BNO)
-xfs_dablk_t xfs_da_cookie_bno(struct xfs_mount *mp, xfs_off_t cookie);
-#define XFS_DA_COOKIE_BNO(mp,cookie) xfs_da_cookie_bno(mp,cookie)
-#else
-#define XFS_DA_COOKIE_BNO(mp,cookie) \
- (((xfs_off_t)(cookie) >> 31) == -1LL ? \
- (xfs_dablk_t)0 : \
- (xfs_dablk_t)((xfs_off_t)(cookie) >> ((mp)->m_dircook_elog + 32)))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DA_COOKIE_ENTRY)
-int xfs_da_cookie_entry(struct xfs_mount *mp, xfs_off_t cookie);
-#define XFS_DA_COOKIE_ENTRY(mp,cookie) xfs_da_cookie_entry(mp,cookie)
-#else
-#define XFS_DA_COOKIE_ENTRY(mp,cookie) \
- (((xfs_off_t)(cookie) >> 31) == -1LL ? \
- (xfs_dablk_t)0 : \
- (xfs_dablk_t)(((xfs_off_t)(cookie) >> 32) & \
- ((1 << (mp)->m_dircook_elog) - 1)))
-#endif
-
+#define XFS_LBSIZE(mp) (mp)->m_sb.sb_blocksize
/*========================================================================
* 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.
*/
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
* multiple non-contiguous fsblocks might be needed to cover one
(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__
/*========================================================================
- * Function prototypes for the kernel.
+ * Function prototypes.
*========================================================================*/
/*
xfs_dabuf_t *dead_buf);
uint xfs_da_hashname(const uchar_t *name_string, int name_length);
-uint xfs_da_log2_roundup(uint i);
+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);
xfs_daddr_t xfs_da_blkno(xfs_dabuf_t *dabuf);
extern struct kmem_zone *xfs_da_state_zone;
-#endif /* __KERNEL__ */
+extern struct kmem_zone *xfs_dabuf_zone;
#endif /* __XFS_DA_BTREE_H__ */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff