-/*
- * Copyright (c) 2000 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
- * 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.
- *
- * 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/
- */
-#ifndef __XFS_DIR_SF_H__
-#define __XFS_DIR_SF_H__
-
-/*
- * Directory layout when stored internal to an inode.
- *
- * Small directories are packed as tightly as possible so as to
- * fit into the literal area of the inode.
- */
-
-typedef struct { __uint8_t i[sizeof(xfs_ino_t)]; } xfs_dir_ino_t;
-
-/*
- * The parent directory has a dedicated field, and the self-pointer must
- * be calculated on the fly.
- *
- * Entries are packed toward the top as tight as possible. The header
- * and the elements much be memcpy'd out into a work area to get correct
- * alignment for the inode number fields.
- */
-typedef struct xfs_dir_shortform {
- struct xfs_dir_sf_hdr { /* constant-structure header block */
- xfs_dir_ino_t parent; /* parent dir inode number */
- __uint8_t count; /* count of active entries */
- } hdr;
- struct xfs_dir_sf_entry {
- xfs_dir_ino_t inumber; /* referenced inode number */
- __uint8_t namelen; /* actual length of name (no NULL) */
- __uint8_t name[1]; /* name */
- } list[1]; /* variable sized array */
-} xfs_dir_shortform_t;
-typedef struct xfs_dir_sf_hdr xfs_dir_sf_hdr_t;
-typedef struct xfs_dir_sf_entry xfs_dir_sf_entry_t;
-
-/*
- * We generate this then sort it, so that readdirs are returned in
- * hash-order. Else seekdir won't work.
- */
-typedef struct xfs_dir_sf_sort {
- __uint8_t entno; /* .=0, ..=1, else entry# + 2 */
- __uint8_t seqno; /* sequence # with same hash value */
- __uint8_t namelen; /* length of name value (no null) */
- xfs_dahash_t hash; /* this entry's hash value */
- xfs_intino_t ino; /* this entry's inode number */
- char *name; /* name value, pointer into buffer */
-} xfs_dir_sf_sort_t;
-
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR_SF_GET_DIRINO)
-void xfs_dir_sf_get_dirino(xfs_dir_ino_t *from, xfs_ino_t *to);
-#define XFS_DIR_SF_GET_DIRINO(from,to) xfs_dir_sf_get_dirino(from, to)
-#else
-#define XFS_DIR_SF_GET_DIRINO(from,to) (*(to) = XFS_GET_DIR_INO8(*from))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR_SF_PUT_DIRINO)
-void xfs_dir_sf_put_dirino(xfs_ino_t *from, xfs_dir_ino_t *to);
-#define XFS_DIR_SF_PUT_DIRINO(from,to) xfs_dir_sf_put_dirino(from, to)
-#else
-#define XFS_DIR_SF_PUT_DIRINO(from,to) XFS_PUT_DIR_INO8(*(from), *(to))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR_SF_ENTSIZE_BYNAME)
-int xfs_dir_sf_entsize_byname(int len);
-#define XFS_DIR_SF_ENTSIZE_BYNAME(len) xfs_dir_sf_entsize_byname(len)
-#else
-#define XFS_DIR_SF_ENTSIZE_BYNAME(len) /* space a name uses */ \
- ((uint)sizeof(xfs_dir_sf_entry_t)-1 + (len))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR_SF_ENTSIZE_BYENTRY)
-int xfs_dir_sf_entsize_byentry(xfs_dir_sf_entry_t *sfep);
-#define XFS_DIR_SF_ENTSIZE_BYENTRY(sfep) xfs_dir_sf_entsize_byentry(sfep)
-#else
-#define XFS_DIR_SF_ENTSIZE_BYENTRY(sfep) /* space an entry uses */ \
- ((uint)sizeof(xfs_dir_sf_entry_t)-1 + (sfep)->namelen)
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR_SF_NEXTENTRY)
-xfs_dir_sf_entry_t *xfs_dir_sf_nextentry(xfs_dir_sf_entry_t *sfep);
-#define XFS_DIR_SF_NEXTENTRY(sfep) xfs_dir_sf_nextentry(sfep)
-#else
-#define XFS_DIR_SF_NEXTENTRY(sfep) /* next entry in struct */ \
- ((xfs_dir_sf_entry_t *) \
- ((char *)(sfep) + XFS_DIR_SF_ENTSIZE_BYENTRY(sfep)))
-#endif
-#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_DIR_SF_ALLFIT)
-int xfs_dir_sf_allfit(int count, int totallen);
-#define XFS_DIR_SF_ALLFIT(count,totallen) \
- xfs_dir_sf_allfit(count,totallen)
-#else
-#define XFS_DIR_SF_ALLFIT(count,totallen) /* will all entries fit? */ \
- ((uint)sizeof(xfs_dir_sf_hdr_t) + \
- ((uint)sizeof(xfs_dir_sf_entry_t)-1)*(count) + (totallen))
-#endif
-
-#if defined(XFS_DIR_TRACE)
-
-/*
- * Kernel tracing support for directories.
- */
-struct uio;
-struct xfs_inode;
-struct xfs_da_intnode;
-struct xfs_dinode;
-struct xfs_dir_leafblock;
-struct xfs_dir_leaf_entry;
-
-#define XFS_DIR_TRACE_SIZE 4096 /* size of global trace buffer */
-extern ktrace_t *xfs_dir_trace_buf;
-
-/*
- * Trace record types.
- */
-#define XFS_DIR_KTRACE_G_DU 1 /* dp, uio */
-#define XFS_DIR_KTRACE_G_DUB 2 /* dp, uio, bno */
-#define XFS_DIR_KTRACE_G_DUN 3 /* dp, uio, node */
-#define XFS_DIR_KTRACE_G_DUL 4 /* dp, uio, leaf */
-#define XFS_DIR_KTRACE_G_DUE 5 /* dp, uio, leaf entry */
-#define XFS_DIR_KTRACE_G_DUC 6 /* dp, uio, cookie */
-
-void xfs_dir_trace_g_du(char *where, struct xfs_inode *dp, struct uio *uio);
-void xfs_dir_trace_g_dub(char *where, struct xfs_inode *dp, struct uio *uio,
- xfs_dablk_t bno);
-void xfs_dir_trace_g_dun(char *where, struct xfs_inode *dp, struct uio *uio,
- struct xfs_da_intnode *node);
-void xfs_dir_trace_g_dul(char *where, struct xfs_inode *dp, struct uio *uio,
- struct xfs_dir_leafblock *leaf);
-void xfs_dir_trace_g_due(char *where, struct xfs_inode *dp, struct uio *uio,
- struct xfs_dir_leaf_entry *entry);
-void xfs_dir_trace_g_duc(char *where, struct xfs_inode *dp, struct uio *uio,
- xfs_off_t cookie);
-void xfs_dir_trace_enter(int type, char *where,
- void *a0, void *a1, void *a2, void *a3,
- void *a4, void *a5, void *a6, void *a7,
- void *a8, void *a9, void *a10, void *a11);
-#else
-#define xfs_dir_trace_g_du(w,d,u)
-#define xfs_dir_trace_g_dub(w,d,u,b)
-#define xfs_dir_trace_g_dun(w,d,u,n)
-#define xfs_dir_trace_g_dul(w,d,u,l)
-#define xfs_dir_trace_g_due(w,d,u,e)
-#define xfs_dir_trace_g_duc(w,d,u,c)
-#endif /* DEBUG */
-
-#endif /* __XFS_DIR_SF_H__ */
projects / linux-2.6-omap-h63xx.git / blobdiff