X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;ds=sidebyside;f=fs%2Fxfs%2Fxfs_attr_leaf.h;h=51c3ee156b2fdf787399710ce5b280007ff0655c;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=b1480e0b3349227d9b032d5ed625576a0d28bf32;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git diff --git a/fs/xfs/xfs_attr_leaf.h b/fs/xfs/xfs_attr_leaf.h index b1480e0b3..51c3ee156 100644 --- a/fs/xfs/xfs_attr_leaf.h +++ b/fs/xfs/xfs_attr_leaf.h @@ -1,33 +1,19 @@ /* - * Copyright (c) 2000, 2002-2003 Silicon Graphics, Inc. All Rights Reserved. + * Copyright (c) 2000,2002-2003,2005 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_ATTR_LEAF_H__ #define __XFS_ATTR_LEAF_H__ @@ -77,7 +63,7 @@ struct xfs_trans; * the leaf_entry. The namespaces are independent only because we also look * at the namespace bit when we are looking for a matching attribute name. * - * We also store a "incomplete" bit in the leaf_entry. It shows that an + * We also store an "incomplete" bit in the leaf_entry. It shows that an * attribute is in the middle of being created and should not be shown to * the user if we crash during the time that the bit is set. We clear the * bit when we have finished setting up the attribute. We do this because @@ -86,42 +72,48 @@ struct xfs_trans; */ #define XFS_ATTR_LEAF_MAPSIZE 3 /* how many freespace slots */ +typedef struct xfs_attr_leaf_map { /* RLE map of free bytes */ + __be16 base; /* base of free region */ + __be16 size; /* length of free region */ +} xfs_attr_leaf_map_t; + +typedef struct xfs_attr_leaf_hdr { /* constant-structure header block */ + xfs_da_blkinfo_t info; /* block type, links, etc. */ + __be16 count; /* count of active leaf_entry's */ + __be16 usedbytes; /* num bytes of names/values stored */ + __be16 firstused; /* first used byte in name area */ + __u8 holes; /* != 0 if blk needs compaction */ + __u8 pad1; + xfs_attr_leaf_map_t freemap[XFS_ATTR_LEAF_MAPSIZE]; + /* N largest free regions */ +} xfs_attr_leaf_hdr_t; + +typedef struct xfs_attr_leaf_entry { /* sorted on key, not name */ + __be32 hashval; /* hash value of name */ + __be16 nameidx; /* index into buffer of name/value */ + __u8 flags; /* LOCAL/ROOT/SECURE/INCOMPLETE flag */ + __u8 pad2; /* unused pad byte */ +} xfs_attr_leaf_entry_t; + +typedef struct xfs_attr_leaf_name_local { + __be16 valuelen; /* number of bytes in value */ + __u8 namelen; /* length of name bytes */ + __u8 nameval[1]; /* name/value bytes */ +} xfs_attr_leaf_name_local_t; + +typedef struct xfs_attr_leaf_name_remote { + __be32 valueblk; /* block number of value bytes */ + __be32 valuelen; /* number of bytes in value */ + __u8 namelen; /* length of name bytes */ + __u8 name[1]; /* name bytes */ +} xfs_attr_leaf_name_remote_t; + typedef struct xfs_attr_leafblock { - struct xfs_attr_leaf_hdr { /* constant-structure header block */ - xfs_da_blkinfo_t info; /* block type, links, etc. */ - __uint16_t count; /* count of active leaf_entry's */ - __uint16_t usedbytes; /* num bytes of names/values stored */ - __uint16_t firstused; /* first used byte in name area */ - __uint8_t holes; /* != 0 if blk needs compaction */ - __uint8_t pad1; - struct xfs_attr_leaf_map { /* RLE map of free bytes */ - __uint16_t base; /* base of free region */ - __uint16_t size; /* length of free region */ - } freemap[XFS_ATTR_LEAF_MAPSIZE]; /* N largest free regions */ - } hdr; - struct xfs_attr_leaf_entry { /* sorted on key, not name */ - xfs_dahash_t hashval; /* hash value of name */ - __uint16_t nameidx; /* index into buffer of name/value */ - __uint8_t flags; /* LOCAL/ROOT/SECURE/INCOMPLETE flag */ - __uint8_t pad2; /* unused pad byte */ - } entries[1]; /* variable sized array */ - struct xfs_attr_leaf_name_local { - __uint16_t valuelen; /* number of bytes in value */ - __uint8_t namelen; /* length of name bytes */ - __uint8_t nameval[1]; /* name/value bytes */ - } namelist; /* grows from bottom of buf */ - struct xfs_attr_leaf_name_remote { - xfs_dablk_t valueblk; /* block number of value bytes */ - __uint32_t valuelen; /* number of bytes in value */ - __uint8_t namelen; /* length of name bytes */ - __uint8_t name[1]; /* name bytes */ - } valuelist; /* grows from bottom of buf */ + xfs_attr_leaf_hdr_t hdr; /* constant-structure header block */ + xfs_attr_leaf_entry_t entries[1]; /* sorted on key, not name */ + xfs_attr_leaf_name_local_t namelist; /* grows from bottom of buf */ + xfs_attr_leaf_name_remote_t valuelist; /* grows from bottom of buf */ } xfs_attr_leafblock_t; -typedef struct xfs_attr_leaf_hdr xfs_attr_leaf_hdr_t; -typedef struct xfs_attr_leaf_map xfs_attr_leaf_map_t; -typedef struct xfs_attr_leaf_entry xfs_attr_leaf_entry_t; -typedef struct xfs_attr_leaf_name_local xfs_attr_leaf_name_local_t; -typedef struct xfs_attr_leaf_name_remote xfs_attr_leaf_name_remote_t; /* * Flags used in the leaf_entry[i].flags field. @@ -146,65 +138,58 @@ typedef struct xfs_attr_leaf_name_remote xfs_attr_leaf_name_remote_t; /* * Cast typed pointers for "local" and "remote" name/value structs. */ -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ATTR_LEAF_NAME_REMOTE) -xfs_attr_leaf_name_remote_t * -xfs_attr_leaf_name_remote(xfs_attr_leafblock_t *leafp, int idx); #define XFS_ATTR_LEAF_NAME_REMOTE(leafp,idx) \ xfs_attr_leaf_name_remote(leafp,idx) -#else -#define XFS_ATTR_LEAF_NAME_REMOTE(leafp,idx) /* remote name struct ptr */ \ - ((xfs_attr_leaf_name_remote_t *) \ - &((char *)(leafp))[ INT_GET((leafp)->entries[idx].nameidx, ARCH_CONVERT) ]) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ATTR_LEAF_NAME_LOCAL) -xfs_attr_leaf_name_local_t * -xfs_attr_leaf_name_local(xfs_attr_leafblock_t *leafp, int idx); +static inline xfs_attr_leaf_name_remote_t * +xfs_attr_leaf_name_remote(xfs_attr_leafblock_t *leafp, int idx) +{ + return (xfs_attr_leaf_name_remote_t *) + &((char *)leafp)[be16_to_cpu(leafp->entries[idx].nameidx)]; +} + #define XFS_ATTR_LEAF_NAME_LOCAL(leafp,idx) \ xfs_attr_leaf_name_local(leafp,idx) -#else -#define XFS_ATTR_LEAF_NAME_LOCAL(leafp,idx) /* local name struct ptr */ \ - ((xfs_attr_leaf_name_local_t *) \ - &((char *)(leafp))[ INT_GET((leafp)->entries[idx].nameidx, ARCH_CONVERT) ]) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ATTR_LEAF_NAME) -char *xfs_attr_leaf_name(xfs_attr_leafblock_t *leafp, int idx); -#define XFS_ATTR_LEAF_NAME(leafp,idx) xfs_attr_leaf_name(leafp,idx) -#else -#define XFS_ATTR_LEAF_NAME(leafp,idx) /* generic name struct ptr */ \ - (&((char *)(leafp))[ INT_GET((leafp)->entries[idx].nameidx, ARCH_CONVERT) ]) -#endif +static inline xfs_attr_leaf_name_local_t * +xfs_attr_leaf_name_local(xfs_attr_leafblock_t *leafp, int idx) +{ + return (xfs_attr_leaf_name_local_t *) + &((char *)leafp)[be16_to_cpu(leafp->entries[idx].nameidx)]; +} + +#define XFS_ATTR_LEAF_NAME(leafp,idx) \ + xfs_attr_leaf_name(leafp,idx) +static inline char *xfs_attr_leaf_name(xfs_attr_leafblock_t *leafp, int idx) +{ + return &((char *)leafp)[be16_to_cpu(leafp->entries[idx].nameidx)]; +} /* * Calculate total bytes used (including trailing pad for alignment) for * a "local" name/value structure, a "remote" name/value structure, and * a pointer which might be either. */ -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ATTR_LEAF_ENTSIZE_REMOTE) -int xfs_attr_leaf_entsize_remote(int nlen); #define XFS_ATTR_LEAF_ENTSIZE_REMOTE(nlen) \ xfs_attr_leaf_entsize_remote(nlen) -#else -#define XFS_ATTR_LEAF_ENTSIZE_REMOTE(nlen) /* space for remote struct */ \ - (((uint)sizeof(xfs_attr_leaf_name_remote_t) - 1 + (nlen) + \ - XFS_ATTR_LEAF_NAME_ALIGN - 1) & ~(XFS_ATTR_LEAF_NAME_ALIGN - 1)) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ATTR_LEAF_ENTSIZE_LOCAL) -int xfs_attr_leaf_entsize_local(int nlen, int vlen); +static inline int xfs_attr_leaf_entsize_remote(int nlen) +{ + return ((uint)sizeof(xfs_attr_leaf_name_remote_t) - 1 + (nlen) + \ + XFS_ATTR_LEAF_NAME_ALIGN - 1) & ~(XFS_ATTR_LEAF_NAME_ALIGN - 1); +} + #define XFS_ATTR_LEAF_ENTSIZE_LOCAL(nlen,vlen) \ xfs_attr_leaf_entsize_local(nlen,vlen) -#else -#define XFS_ATTR_LEAF_ENTSIZE_LOCAL(nlen,vlen) /* space for local struct */ \ - (((uint)sizeof(xfs_attr_leaf_name_local_t) - 1 + (nlen) + (vlen) + \ - XFS_ATTR_LEAF_NAME_ALIGN - 1) & ~(XFS_ATTR_LEAF_NAME_ALIGN - 1)) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ATTR_LEAF_ENTSIZE_LOCAL_MAX) -int xfs_attr_leaf_entsize_local_max(int bsize); +static inline int xfs_attr_leaf_entsize_local(int nlen, int vlen) +{ + return ((uint)sizeof(xfs_attr_leaf_name_local_t) - 1 + (nlen) + (vlen) + + XFS_ATTR_LEAF_NAME_ALIGN - 1) & ~(XFS_ATTR_LEAF_NAME_ALIGN - 1); +} + #define XFS_ATTR_LEAF_ENTSIZE_LOCAL_MAX(bsize) \ xfs_attr_leaf_entsize_local_max(bsize) -#else -#define XFS_ATTR_LEAF_ENTSIZE_LOCAL_MAX(bsize) /* max local struct size */ \ - (((bsize) >> 1) + ((bsize) >> 2)) -#endif +static inline int xfs_attr_leaf_entsize_local_max(int bsize) +{ + return (((bsize) >> 1) + ((bsize) >> 2)); +} /*======================================================================== @@ -237,23 +222,25 @@ typedef struct xfs_attr_inactive_list { *========================================================================*/ /* - * Internal routines when dirsize < XFS_LITINO(mp). + * Internal routines when attribute fork size < XFS_LITINO(mp). */ -int xfs_attr_shortform_create(struct xfs_da_args *args); -int xfs_attr_shortform_add(struct xfs_da_args *add); +void xfs_attr_shortform_create(struct xfs_da_args *args); +void xfs_attr_shortform_add(struct xfs_da_args *args, int forkoff); int xfs_attr_shortform_lookup(struct xfs_da_args *args); int xfs_attr_shortform_getvalue(struct xfs_da_args *args); int xfs_attr_shortform_to_leaf(struct xfs_da_args *args); -int xfs_attr_shortform_remove(struct xfs_da_args *remove); +int xfs_attr_shortform_remove(struct xfs_da_args *args); int xfs_attr_shortform_list(struct xfs_attr_list_context *context); int xfs_attr_shortform_allfit(struct xfs_dabuf *bp, struct xfs_inode *dp); +int xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes); + /* - * Internal routines when dirsize == XFS_LBSIZE(mp). + * Internal routines when attribute fork size == XFS_LBSIZE(mp). */ int xfs_attr_leaf_to_node(struct xfs_da_args *args); int xfs_attr_leaf_to_shortform(struct xfs_dabuf *bp, - struct xfs_da_args *args); + struct xfs_da_args *args, int forkoff); int xfs_attr_leaf_clearflag(struct xfs_da_args *args); int xfs_attr_leaf_setflag(struct xfs_da_args *args); int xfs_attr_leaf_flipflags(xfs_da_args_t *args); @@ -261,8 +248,6 @@ int xfs_attr_leaf_flipflags(xfs_da_args_t *args); /* * Routines used for growing the Btree. */ -int xfs_attr_leaf_create(struct xfs_da_args *args, xfs_dablk_t which_block, - struct xfs_dabuf **bpp); int xfs_attr_leaf_split(struct xfs_da_state *state, struct xfs_da_state_blk *oldblk, struct xfs_da_state_blk *newblk); @@ -284,12 +269,6 @@ void xfs_attr_leaf_unbalance(struct xfs_da_state *state, struct xfs_da_state_blk *drop_blk, struct xfs_da_state_blk *save_blk); int xfs_attr_root_inactive(struct xfs_trans **trans, struct xfs_inode *dp); -int xfs_attr_node_inactive(struct xfs_trans **trans, struct xfs_inode *dp, - struct xfs_dabuf *bp, int level); -int xfs_attr_leaf_inactive(struct xfs_trans **trans, struct xfs_inode *dp, - struct xfs_dabuf *bp); -int xfs_attr_leaf_freextent(struct xfs_trans **trans, struct xfs_inode *dp, - xfs_dablk_t blkno, int blkcnt); /* * Utility routines. @@ -297,12 +276,8 @@ int xfs_attr_leaf_freextent(struct xfs_trans **trans, struct xfs_inode *dp, xfs_dahash_t xfs_attr_leaf_lasthash(struct xfs_dabuf *bp, int *count); int xfs_attr_leaf_order(struct xfs_dabuf *leaf1_bp, struct xfs_dabuf *leaf2_bp); -int xfs_attr_leaf_newentsize(struct xfs_da_args *args, int blocksize, +int xfs_attr_leaf_newentsize(int namelen, int valuelen, int blocksize, int *local); -int xfs_attr_leaf_entsize(struct xfs_attr_leafblock *leaf, int index); -int xfs_attr_put_listent(struct xfs_attr_list_context *context, - struct attrnames *, char *name, int namelen, - int valuelen); int xfs_attr_rolltrans(struct xfs_trans **transp, struct xfs_inode *dp); #endif /* __XFS_ATTR_LEAF_H__ */