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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/fs/xfs/xfs_btree.h
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/fs/xfs/xfs_btree.h')
-rw-r--r--ANDROID_3.4.5/fs/xfs/xfs_btree.h455
1 files changed, 0 insertions, 455 deletions
diff --git a/ANDROID_3.4.5/fs/xfs/xfs_btree.h b/ANDROID_3.4.5/fs/xfs/xfs_btree.h
deleted file mode 100644
index 5b240de1..00000000
--- a/ANDROID_3.4.5/fs/xfs/xfs_btree.h
+++ /dev/null
@@ -1,455 +0,0 @@
-/*
- * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
- * All Rights Reserved.
- *
- * 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. See the
- * GNU General Public License for more details.
- *
- * 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_BTREE_H__
-#define __XFS_BTREE_H__
-
-struct xfs_buf;
-struct xfs_bmap_free;
-struct xfs_inode;
-struct xfs_mount;
-struct xfs_trans;
-
-extern kmem_zone_t *xfs_btree_cur_zone;
-
-/*
- * This nonsense is to make -wlint happy.
- */
-#define XFS_LOOKUP_EQ ((xfs_lookup_t)XFS_LOOKUP_EQi)
-#define XFS_LOOKUP_LE ((xfs_lookup_t)XFS_LOOKUP_LEi)
-#define XFS_LOOKUP_GE ((xfs_lookup_t)XFS_LOOKUP_GEi)
-
-#define XFS_BTNUM_BNO ((xfs_btnum_t)XFS_BTNUM_BNOi)
-#define XFS_BTNUM_CNT ((xfs_btnum_t)XFS_BTNUM_CNTi)
-#define XFS_BTNUM_BMAP ((xfs_btnum_t)XFS_BTNUM_BMAPi)
-#define XFS_BTNUM_INO ((xfs_btnum_t)XFS_BTNUM_INOi)
-
-/*
- * Generic btree header.
- *
- * This is a combination of the actual format used on disk for short and long
- * format btrees. The first three fields are shared by both format, but
- * the pointers are different and should be used with care.
- *
- * To get the size of the actual short or long form headers please use
- * the size macros below. Never use sizeof(xfs_btree_block).
- */
-struct xfs_btree_block {
- __be32 bb_magic; /* magic number for block type */
- __be16 bb_level; /* 0 is a leaf */
- __be16 bb_numrecs; /* current # of data records */
- union {
- struct {
- __be32 bb_leftsib;
- __be32 bb_rightsib;
- } s; /* short form pointers */
- struct {
- __be64 bb_leftsib;
- __be64 bb_rightsib;
- } l; /* long form pointers */
- } bb_u; /* rest */
-};
-
-#define XFS_BTREE_SBLOCK_LEN 16 /* size of a short form block */
-#define XFS_BTREE_LBLOCK_LEN 24 /* size of a long form block */
-
-
-/*
- * Generic key, ptr and record wrapper structures.
- *
- * These are disk format structures, and are converted where necessary
- * by the btree specific code that needs to interpret them.
- */
-union xfs_btree_ptr {
- __be32 s; /* short form ptr */
- __be64 l; /* long form ptr */
-};
-
-union xfs_btree_key {
- xfs_bmbt_key_t bmbt;
- xfs_bmdr_key_t bmbr; /* bmbt root block */
- xfs_alloc_key_t alloc;
- xfs_inobt_key_t inobt;
-};
-
-union xfs_btree_rec {
- xfs_bmbt_rec_t bmbt;
- xfs_bmdr_rec_t bmbr; /* bmbt root block */
- xfs_alloc_rec_t alloc;
- xfs_inobt_rec_t inobt;
-};
-
-/*
- * For logging record fields.
- */
-#define XFS_BB_MAGIC 0x01
-#define XFS_BB_LEVEL 0x02
-#define XFS_BB_NUMRECS 0x04
-#define XFS_BB_LEFTSIB 0x08
-#define XFS_BB_RIGHTSIB 0x10
-#define XFS_BB_NUM_BITS 5
-#define XFS_BB_ALL_BITS ((1 << XFS_BB_NUM_BITS) - 1)
-
-/*
- * Magic numbers for btree blocks.
- */
-extern const __uint32_t xfs_magics[];
-
-/*
- * Generic stats interface
- */
-#define __XFS_BTREE_STATS_INC(type, stat) \
- XFS_STATS_INC(xs_ ## type ## _2_ ## stat)
-#define XFS_BTREE_STATS_INC(cur, stat) \
-do { \
- switch (cur->bc_btnum) { \
- case XFS_BTNUM_BNO: __XFS_BTREE_STATS_INC(abtb, stat); break; \
- case XFS_BTNUM_CNT: __XFS_BTREE_STATS_INC(abtc, stat); break; \
- case XFS_BTNUM_BMAP: __XFS_BTREE_STATS_INC(bmbt, stat); break; \
- case XFS_BTNUM_INO: __XFS_BTREE_STATS_INC(ibt, stat); break; \
- case XFS_BTNUM_MAX: ASSERT(0); /* fucking gcc */ ; break; \
- } \
-} while (0)
-
-#define __XFS_BTREE_STATS_ADD(type, stat, val) \
- XFS_STATS_ADD(xs_ ## type ## _2_ ## stat, val)
-#define XFS_BTREE_STATS_ADD(cur, stat, val) \
-do { \
- switch (cur->bc_btnum) { \
- case XFS_BTNUM_BNO: __XFS_BTREE_STATS_ADD(abtb, stat, val); break; \
- case XFS_BTNUM_CNT: __XFS_BTREE_STATS_ADD(abtc, stat, val); break; \
- case XFS_BTNUM_BMAP: __XFS_BTREE_STATS_ADD(bmbt, stat, val); break; \
- case XFS_BTNUM_INO: __XFS_BTREE_STATS_ADD(ibt, stat, val); break; \
- case XFS_BTNUM_MAX: ASSERT(0); /* fucking gcc */ ; break; \
- } \
-} while (0)
-
-#define XFS_BTREE_MAXLEVELS 8 /* max of all btrees */
-
-struct xfs_btree_ops {
- /* size of the key and record structures */
- size_t key_len;
- size_t rec_len;
-
- /* cursor operations */
- struct xfs_btree_cur *(*dup_cursor)(struct xfs_btree_cur *);
- void (*update_cursor)(struct xfs_btree_cur *src,
- struct xfs_btree_cur *dst);
-
- /* update btree root pointer */
- void (*set_root)(struct xfs_btree_cur *cur,
- union xfs_btree_ptr *nptr, int level_change);
-
- /* block allocation / freeing */
- int (*alloc_block)(struct xfs_btree_cur *cur,
- union xfs_btree_ptr *start_bno,
- union xfs_btree_ptr *new_bno,
- int length, int *stat);
- int (*free_block)(struct xfs_btree_cur *cur, struct xfs_buf *bp);
-
- /* update last record information */
- void (*update_lastrec)(struct xfs_btree_cur *cur,
- struct xfs_btree_block *block,
- union xfs_btree_rec *rec,
- int ptr, int reason);
-
- /* records in block/level */
- int (*get_minrecs)(struct xfs_btree_cur *cur, int level);
- int (*get_maxrecs)(struct xfs_btree_cur *cur, int level);
-
- /* records on disk. Matter for the root in inode case. */
- int (*get_dmaxrecs)(struct xfs_btree_cur *cur, int level);
-
- /* init values of btree structures */
- void (*init_key_from_rec)(union xfs_btree_key *key,
- union xfs_btree_rec *rec);
- void (*init_rec_from_key)(union xfs_btree_key *key,
- union xfs_btree_rec *rec);
- void (*init_rec_from_cur)(struct xfs_btree_cur *cur,
- union xfs_btree_rec *rec);
- void (*init_ptr_from_cur)(struct xfs_btree_cur *cur,
- union xfs_btree_ptr *ptr);
-
- /* difference between key value and cursor value */
- __int64_t (*key_diff)(struct xfs_btree_cur *cur,
- union xfs_btree_key *key);
-
-#ifdef DEBUG
- /* check that k1 is lower than k2 */
- int (*keys_inorder)(struct xfs_btree_cur *cur,
- union xfs_btree_key *k1,
- union xfs_btree_key *k2);
-
- /* check that r1 is lower than r2 */
- int (*recs_inorder)(struct xfs_btree_cur *cur,
- union xfs_btree_rec *r1,
- union xfs_btree_rec *r2);
-#endif
-};
-
-/*
- * Reasons for the update_lastrec method to be called.
- */
-#define LASTREC_UPDATE 0
-#define LASTREC_INSREC 1
-#define LASTREC_DELREC 2
-
-
-/*
- * Btree cursor structure.
- * This collects all information needed by the btree code in one place.
- */
-typedef struct xfs_btree_cur
-{
- struct xfs_trans *bc_tp; /* transaction we're in, if any */
- struct xfs_mount *bc_mp; /* file system mount struct */
- const struct xfs_btree_ops *bc_ops;
- uint bc_flags; /* btree features - below */
- union {
- xfs_alloc_rec_incore_t a;
- xfs_bmbt_irec_t b;
- xfs_inobt_rec_incore_t i;
- } bc_rec; /* current insert/search record value */
- struct xfs_buf *bc_bufs[XFS_BTREE_MAXLEVELS]; /* buf ptr per level */
- int bc_ptrs[XFS_BTREE_MAXLEVELS]; /* key/record # */
- __uint8_t bc_ra[XFS_BTREE_MAXLEVELS]; /* readahead bits */
-#define XFS_BTCUR_LEFTRA 1 /* left sibling has been read-ahead */
-#define XFS_BTCUR_RIGHTRA 2 /* right sibling has been read-ahead */
- __uint8_t bc_nlevels; /* number of levels in the tree */
- __uint8_t bc_blocklog; /* log2(blocksize) of btree blocks */
- xfs_btnum_t bc_btnum; /* identifies which btree type */
- union {
- struct { /* needed for BNO, CNT, INO */
- struct xfs_buf *agbp; /* agf/agi buffer pointer */
- xfs_agnumber_t agno; /* ag number */
- } a;
- struct { /* needed for BMAP */
- struct xfs_inode *ip; /* pointer to our inode */
- struct xfs_bmap_free *flist; /* list to free after */
- xfs_fsblock_t firstblock; /* 1st blk allocated */
- int allocated; /* count of alloced */
- short forksize; /* fork's inode space */
- char whichfork; /* data or attr fork */
- char flags; /* flags */
-#define XFS_BTCUR_BPRV_WASDEL 1 /* was delayed */
- } b;
- } bc_private; /* per-btree type data */
-} xfs_btree_cur_t;
-
-/* cursor flags */
-#define XFS_BTREE_LONG_PTRS (1<<0) /* pointers are 64bits long */
-#define XFS_BTREE_ROOT_IN_INODE (1<<1) /* root may be variable size */
-#define XFS_BTREE_LASTREC_UPDATE (1<<2) /* track last rec externally */
-
-
-#define XFS_BTREE_NOERROR 0
-#define XFS_BTREE_ERROR 1
-
-/*
- * Convert from buffer to btree block header.
- */
-#define XFS_BUF_TO_BLOCK(bp) ((struct xfs_btree_block *)((bp)->b_addr))
-
-
-/*
- * Check that block header is ok.
- */
-int
-xfs_btree_check_block(
- struct xfs_btree_cur *cur, /* btree cursor */
- struct xfs_btree_block *block, /* generic btree block pointer */
- int level, /* level of the btree block */
- struct xfs_buf *bp); /* buffer containing block, if any */
-
-/*
- * Check that (long) pointer is ok.
- */
-int /* error (0 or EFSCORRUPTED) */
-xfs_btree_check_lptr(
- struct xfs_btree_cur *cur, /* btree cursor */
- xfs_dfsbno_t ptr, /* btree block disk address */
- int level); /* btree block level */
-
-/*
- * Delete the btree cursor.
- */
-void
-xfs_btree_del_cursor(
- xfs_btree_cur_t *cur, /* btree cursor */
- int error); /* del because of error */
-
-/*
- * Duplicate the btree cursor.
- * Allocate a new one, copy the record, re-get the buffers.
- */
-int /* error */
-xfs_btree_dup_cursor(
- xfs_btree_cur_t *cur, /* input cursor */
- xfs_btree_cur_t **ncur);/* output cursor */
-
-/*
- * Get a buffer for the block, return it with no data read.
- * Long-form addressing.
- */
-struct xfs_buf * /* buffer for fsbno */
-xfs_btree_get_bufl(
- struct xfs_mount *mp, /* file system mount point */
- struct xfs_trans *tp, /* transaction pointer */
- xfs_fsblock_t fsbno, /* file system block number */
- uint lock); /* lock flags for get_buf */
-
-/*
- * Get a buffer for the block, return it with no data read.
- * Short-form addressing.
- */
-struct xfs_buf * /* buffer for agno/agbno */
-xfs_btree_get_bufs(
- struct xfs_mount *mp, /* file system mount point */
- struct xfs_trans *tp, /* transaction pointer */
- xfs_agnumber_t agno, /* allocation group number */
- xfs_agblock_t agbno, /* allocation group block number */
- uint lock); /* lock flags for get_buf */
-
-/*
- * Check for the cursor referring to the last block at the given level.
- */
-int /* 1=is last block, 0=not last block */
-xfs_btree_islastblock(
- xfs_btree_cur_t *cur, /* btree cursor */
- int level); /* level to check */
-
-/*
- * Compute first and last byte offsets for the fields given.
- * Interprets the offsets table, which contains struct field offsets.
- */
-void
-xfs_btree_offsets(
- __int64_t fields, /* bitmask of fields */
- const short *offsets,/* table of field offsets */
- int nbits, /* number of bits to inspect */
- int *first, /* output: first byte offset */
- int *last); /* output: last byte offset */
-
-/*
- * Get a buffer for the block, return it read in.
- * Long-form addressing.
- */
-int /* error */
-xfs_btree_read_bufl(
- struct xfs_mount *mp, /* file system mount point */
- struct xfs_trans *tp, /* transaction pointer */
- xfs_fsblock_t fsbno, /* file system block number */
- uint lock, /* lock flags for read_buf */
- struct xfs_buf **bpp, /* buffer for fsbno */
- int refval);/* ref count value for buffer */
-
-/*
- * Read-ahead the block, don't wait for it, don't return a buffer.
- * Long-form addressing.
- */
-void /* error */
-xfs_btree_reada_bufl(
- struct xfs_mount *mp, /* file system mount point */
- xfs_fsblock_t fsbno, /* file system block number */
- xfs_extlen_t count); /* count of filesystem blocks */
-
-/*
- * Read-ahead the block, don't wait for it, don't return a buffer.
- * Short-form addressing.
- */
-void /* error */
-xfs_btree_reada_bufs(
- struct xfs_mount *mp, /* file system mount point */
- xfs_agnumber_t agno, /* allocation group number */
- xfs_agblock_t agbno, /* allocation group block number */
- xfs_extlen_t count); /* count of filesystem blocks */
-
-
-/*
- * Common btree core entry points.
- */
-int xfs_btree_increment(struct xfs_btree_cur *, int, int *);
-int xfs_btree_decrement(struct xfs_btree_cur *, int, int *);
-int xfs_btree_lookup(struct xfs_btree_cur *, xfs_lookup_t, int *);
-int xfs_btree_update(struct xfs_btree_cur *, union xfs_btree_rec *);
-int xfs_btree_new_iroot(struct xfs_btree_cur *, int *, int *);
-int xfs_btree_insert(struct xfs_btree_cur *, int *);
-int xfs_btree_delete(struct xfs_btree_cur *, int *);
-int xfs_btree_get_rec(struct xfs_btree_cur *, union xfs_btree_rec **, int *);
-
-/*
- * Internal btree helpers also used by xfs_bmap.c.
- */
-void xfs_btree_log_block(struct xfs_btree_cur *, struct xfs_buf *, int);
-void xfs_btree_log_recs(struct xfs_btree_cur *, struct xfs_buf *, int, int);
-
-/*
- * Helpers.
- */
-static inline int xfs_btree_get_numrecs(struct xfs_btree_block *block)
-{
- return be16_to_cpu(block->bb_numrecs);
-}
-
-static inline void xfs_btree_set_numrecs(struct xfs_btree_block *block,
- __uint16_t numrecs)
-{
- block->bb_numrecs = cpu_to_be16(numrecs);
-}
-
-static inline int xfs_btree_get_level(struct xfs_btree_block *block)
-{
- return be16_to_cpu(block->bb_level);
-}
-
-
-/*
- * Min and max functions for extlen, agblock, fileoff, and filblks types.
- */
-#define XFS_EXTLEN_MIN(a,b) min_t(xfs_extlen_t, (a), (b))
-#define XFS_EXTLEN_MAX(a,b) max_t(xfs_extlen_t, (a), (b))
-#define XFS_AGBLOCK_MIN(a,b) min_t(xfs_agblock_t, (a), (b))
-#define XFS_AGBLOCK_MAX(a,b) max_t(xfs_agblock_t, (a), (b))
-#define XFS_FILEOFF_MIN(a,b) min_t(xfs_fileoff_t, (a), (b))
-#define XFS_FILEOFF_MAX(a,b) max_t(xfs_fileoff_t, (a), (b))
-#define XFS_FILBLKS_MIN(a,b) min_t(xfs_filblks_t, (a), (b))
-#define XFS_FILBLKS_MAX(a,b) max_t(xfs_filblks_t, (a), (b))
-
-#define XFS_FSB_SANITY_CHECK(mp,fsb) \
- (XFS_FSB_TO_AGNO(mp, fsb) < mp->m_sb.sb_agcount && \
- XFS_FSB_TO_AGBNO(mp, fsb) < mp->m_sb.sb_agblocks)
-
-/*
- * Trace hooks. Currently not implemented as they need to be ported
- * over to the generic tracing functionality, which is some effort.
- *
- * i,j = integer (32 bit)
- * b = btree block buffer (xfs_buf_t)
- * p = btree ptr
- * r = btree record
- * k = btree key
- */
-#define XFS_BTREE_TRACE_ARGBI(c, b, i)
-#define XFS_BTREE_TRACE_ARGBII(c, b, i, j)
-#define XFS_BTREE_TRACE_ARGI(c, i)
-#define XFS_BTREE_TRACE_ARGIPK(c, i, p, s)
-#define XFS_BTREE_TRACE_ARGIPR(c, i, p, r)
-#define XFS_BTREE_TRACE_ARGIK(c, i, k)
-#define XFS_BTREE_TRACE_ARGR(c, r)
-#define XFS_BTREE_TRACE_CURSOR(c, t)
-
-#endif /* __XFS_BTREE_H__ */