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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/xfs/xfs_attr_sf.h
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Linux-2.6.12-rc2v2.6.12-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!
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+/*
+ * 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__ */