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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 22:20:36 (GMT) |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/xfs/xfs_attr_sf.h | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'fs/xfs/xfs_attr_sf.h')
-rw-r--r-- | fs/xfs/xfs_attr_sf.h | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/fs/xfs/xfs_attr_sf.h b/fs/xfs/xfs_attr_sf.h new file mode 100644 index 0000000..ef7d294 --- /dev/null +++ b/fs/xfs/xfs_attr_sf.h @@ -0,0 +1,149 @@ +/* + * Copyright (c) 2000, 2002 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_ATTR_SF_H__ +#define __XFS_ATTR_SF_H__ + +/* + * Attribute storage when stored inside the inode. + * + * Small attribute lists are packed as tightly as possible so as + * to fit into the literal area of the inode. + */ + +struct xfs_inode; + +/* + * Entries are packed toward the top as tight as possible. + */ +typedef struct xfs_attr_shortform { + struct xfs_attr_sf_hdr { /* constant-structure header block */ + __uint16_t totsize; /* total bytes in shortform list */ + __uint8_t count; /* count of active entries */ + } hdr; + struct xfs_attr_sf_entry { + __uint8_t namelen; /* actual length of name (no NULL) */ + __uint8_t valuelen; /* actual length of value (no NULL) */ + __uint8_t flags; /* flags bits (see xfs_attr_leaf.h) */ + __uint8_t nameval[1]; /* name & value bytes concatenated */ + } list[1]; /* variable sized array */ +} xfs_attr_shortform_t; +typedef struct xfs_attr_sf_hdr xfs_attr_sf_hdr_t; +typedef struct xfs_attr_sf_entry xfs_attr_sf_entry_t; + +/* + * We generate this then sort it, attr_list() must return things in hash-order. + */ +typedef struct xfs_attr_sf_sort { + __uint8_t entno; /* entry number in original list */ + __uint8_t namelen; /* length of name value (no null) */ + __uint8_t valuelen; /* length of value */ + __uint8_t flags; /* flags bits (see xfs_attr_leaf.h) */ + xfs_dahash_t hash; /* this entry's hash value */ + char *name; /* name value, pointer into buffer */ +} xfs_attr_sf_sort_t; + +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ATTR_SF_ENTSIZE_BYNAME) +int xfs_attr_sf_entsize_byname(int nlen, int vlen); +#define XFS_ATTR_SF_ENTSIZE_BYNAME(nlen,vlen) \ + xfs_attr_sf_entsize_byname(nlen,vlen) +#else +#define XFS_ATTR_SF_ENTSIZE_BYNAME(nlen,vlen) /* space name/value uses */ \ + ((int)sizeof(xfs_attr_sf_entry_t)-1 + (nlen)+(vlen)) +#endif +#define XFS_ATTR_SF_ENTSIZE_MAX /* max space for name&value */ \ + ((1 << (NBBY*(int)sizeof(__uint8_t))) - 1) +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ATTR_SF_ENTSIZE) +int xfs_attr_sf_entsize(xfs_attr_sf_entry_t *sfep); +#define XFS_ATTR_SF_ENTSIZE(sfep) xfs_attr_sf_entsize(sfep) +#else +#define XFS_ATTR_SF_ENTSIZE(sfep) /* space an entry uses */ \ + ((int)sizeof(xfs_attr_sf_entry_t)-1 + (sfep)->namelen+(sfep)->valuelen) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ATTR_SF_NEXTENTRY) +xfs_attr_sf_entry_t *xfs_attr_sf_nextentry(xfs_attr_sf_entry_t *sfep); +#define XFS_ATTR_SF_NEXTENTRY(sfep) xfs_attr_sf_nextentry(sfep) +#else +#define XFS_ATTR_SF_NEXTENTRY(sfep) /* next entry in struct */ \ + ((xfs_attr_sf_entry_t *) \ + ((char *)(sfep) + XFS_ATTR_SF_ENTSIZE(sfep))) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ATTR_SF_TOTSIZE) +int xfs_attr_sf_totsize(struct xfs_inode *dp); +#define XFS_ATTR_SF_TOTSIZE(dp) xfs_attr_sf_totsize(dp) +#else +#define XFS_ATTR_SF_TOTSIZE(dp) /* total space in use */ \ + (INT_GET(((xfs_attr_shortform_t *)((dp)->i_afp->if_u1.if_data))->hdr.totsize, ARCH_CONVERT)) +#endif + +#if defined(XFS_ATTR_TRACE) +/* + * Kernel tracing support for attribute lists + */ +struct xfs_attr_list_context; +struct xfs_da_intnode; +struct xfs_da_node_entry; +struct xfs_attr_leafblock; + +#define XFS_ATTR_TRACE_SIZE 4096 /* size of global trace buffer */ +extern ktrace_t *xfs_attr_trace_buf; + +/* + * Trace record types. + */ +#define XFS_ATTR_KTRACE_L_C 1 /* context */ +#define XFS_ATTR_KTRACE_L_CN 2 /* context, node */ +#define XFS_ATTR_KTRACE_L_CB 3 /* context, btree */ +#define XFS_ATTR_KTRACE_L_CL 4 /* context, leaf */ + +void xfs_attr_trace_l_c(char *where, struct xfs_attr_list_context *context); +void xfs_attr_trace_l_cn(char *where, struct xfs_attr_list_context *context, + struct xfs_da_intnode *node); +void xfs_attr_trace_l_cb(char *where, struct xfs_attr_list_context *context, + struct xfs_da_node_entry *btree); +void xfs_attr_trace_l_cl(char *where, struct xfs_attr_list_context *context, + struct xfs_attr_leafblock *leaf); +void xfs_attr_trace_enter(int type, char *where, + __psunsigned_t a2, __psunsigned_t a3, + __psunsigned_t a4, __psunsigned_t a5, + __psunsigned_t a6, __psunsigned_t a7, + __psunsigned_t a8, __psunsigned_t a9, + __psunsigned_t a10, __psunsigned_t a11, + __psunsigned_t a12, __psunsigned_t a13, + __psunsigned_t a14, __psunsigned_t a15); +#else +#define xfs_attr_trace_l_c(w,c) +#define xfs_attr_trace_l_cn(w,c,n) +#define xfs_attr_trace_l_cb(w,c,b) +#define xfs_attr_trace_l_cl(w,c,l) +#endif /* XFS_ATTR_TRACE */ + +#endif /* __XFS_ATTR_SF_H__ */ |