diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/xfs/xfs_bmap.c | 4 | ||||
| -rw-r--r-- | fs/xfs/xfs_da_btree.c | 9 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2.c | 9 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2.h | 54 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_block.c | 7 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_block.h | 93 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_data.c | 7 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_data.h | 182 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_format.h | 595 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_leaf.c | 8 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_leaf.h | 281 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_node.c | 8 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_node.h | 100 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_priv.h | 135 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_sf.c | 8 | ||||
| -rw-r--r-- | fs/xfs/xfs_dir2_sf.h | 151 |
16 files changed, 751 insertions, 900 deletions
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index 2ce6aa644e7e..c51a3f903633 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -29,15 +29,11 @@ #include "xfs_bmap_btree.h" #include "xfs_alloc_btree.h" #include "xfs_ialloc_btree.h" -#include "xfs_dir2_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_btree.h" #include "xfs_mount.h" #include "xfs_itable.h" -#include "xfs_dir2_data.h" -#include "xfs_dir2_leaf.h" -#include "xfs_dir2_block.h" #include "xfs_inode_item.h" #include "xfs_extfree_item.h" #include "xfs_alloc.h" diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c index 18425717cbe6..a58a6410c58d 100644 --- a/fs/xfs/xfs_da_btree.c +++ b/fs/xfs/xfs_da_btree.c @@ -24,11 +24,12 @@ #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_mount.h" #include "xfs_da_btree.h" #include "xfs_bmap_btree.h" -#include "xfs_dir2_sf.h" +#include "xfs_dir2.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2_priv.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_inode_item.h" @@ -36,10 +37,6 @@ #include "xfs_bmap.h" #include "xfs_attr.h" #include "xfs_attr_leaf.h" -#include "xfs_dir2_data.h" -#include "xfs_dir2_leaf.h" -#include "xfs_dir2_block.h" -#include "xfs_dir2_node.h" #include "xfs_error.h" #include "xfs_trace.h" diff --git a/fs/xfs/xfs_dir2.c b/fs/xfs/xfs_dir2.c index 0dee57812f45..6effbeb24e5a 100644 --- a/fs/xfs/xfs_dir2.c +++ b/fs/xfs/xfs_dir2.c @@ -24,20 +24,17 @@ #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_mount.h" #include "xfs_da_btree.h" #include "xfs_bmap_btree.h" #include "xfs_alloc_btree.h" -#include "xfs_dir2_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_inode_item.h" #include "xfs_bmap.h" -#include "xfs_dir2_data.h" -#include "xfs_dir2_leaf.h" -#include "xfs_dir2_block.h" -#include "xfs_dir2_node.h" +#include "xfs_dir2.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2_priv.h" #include "xfs_error.h" #include "xfs_vnodeops.h" #include "xfs_trace.h" diff --git a/fs/xfs/xfs_dir2.h b/fs/xfs/xfs_dir2.h index 74a3b1057685..e937d9991c18 100644 --- a/fs/xfs/xfs_dir2.h +++ b/fs/xfs/xfs_dir2.h @@ -16,49 +16,14 @@ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __XFS_DIR2_H__ -#define __XFS_DIR2_H__ +#define __XFS_DIR2_H__ -struct uio; -struct xfs_dabuf; -struct xfs_da_args; -struct xfs_dir2_put_args; struct xfs_bmap_free; +struct xfs_da_args; struct xfs_inode; struct xfs_mount; struct xfs_trans; -/* - * Directory version 2. - * There are 4 possible formats: - * shortform - * single block - data with embedded leaf at the end - * multiple data blocks, single leaf+freeindex block - * data blocks, node&leaf blocks (btree), freeindex blocks - * - * The shortform format is in xfs_dir2_sf.h. - * The single block format is in xfs_dir2_block.h. - * The data block format is in xfs_dir2_data.h. - * The leaf and freeindex block formats are in xfs_dir2_leaf.h. - * Node blocks are the same as the other version, in xfs_da_btree.h. - */ - -/* - * Byte offset in data block and shortform entry. - */ -typedef __uint16_t xfs_dir2_data_off_t; -#define NULLDATAOFF 0xffffU -typedef uint xfs_dir2_data_aoff_t; /* argument form */ - -/* - * Directory block number (logical dirblk in file) - */ -typedef __uint32_t xfs_dir2_db_t; - -/* - * Byte offset in a directory. - */ -typedef xfs_off_t xfs_dir2_off_t; - extern struct xfs_name xfs_name_dotdot; /* @@ -86,21 +51,10 @@ extern int xfs_dir_replace(struct xfs_trans *tp, struct xfs_inode *dp, struct xfs_bmap_free *flist, xfs_extlen_t tot); extern int xfs_dir_canenter(struct xfs_trans *tp, struct xfs_inode *dp, struct xfs_name *name, uint resblks); -extern int xfs_dir_ino_validate(struct xfs_mount *mp, xfs_ino_t ino); /* - * Utility routines for v2 directories. + * Direct call from the bmap code, bypassing the generic directory layer. */ -extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space, - xfs_dir2_db_t *dbp); -extern int xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, - int *vp); -extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, - int *vp); -extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db, - struct xfs_dabuf *bp); - -extern int xfs_dir_cilookup_result(struct xfs_da_args *args, - const unsigned char *name, int len); +extern int xfs_dir2_sf_to_block(struct xfs_da_args *args); #endif /* __XFS_DIR2_H__ */ diff --git a/fs/xfs/xfs_dir2_block.c b/fs/xfs/xfs_dir2_block.c index 70fb0cb6bd69..9245e029b8ea 100644 --- a/fs/xfs/xfs_dir2_block.c +++ b/fs/xfs/xfs_dir2_block.c @@ -23,17 +23,14 @@ #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_mount.h" #include "xfs_da_btree.h" #include "xfs_bmap_btree.h" -#include "xfs_dir2_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_inode_item.h" -#include "xfs_dir2_data.h" -#include "xfs_dir2_leaf.h" -#include "xfs_dir2_block.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2_priv.h" #include "xfs_error.h" #include "xfs_trace.h" diff --git a/fs/xfs/xfs_dir2_block.h b/fs/xfs/xfs_dir2_block.h deleted file mode 100644 index de59677e38ba..000000000000 --- a/fs/xfs/xfs_dir2_block.h +++ /dev/null @@ -1,93 +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_DIR2_BLOCK_H__ -#define __XFS_DIR2_BLOCK_H__ - -/* - * Directory version 2, single block format structures. - * - * The single block format looks like the following drawing on disk: - * - * +-------------------------------------------------+ - * | xfs_dir2_data_hdr_t | - * +-------------------------------------------------+ - * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | - * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | - * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | - * | ... | - * +-------------------------------------------------+ - * | unused space | - * +-------------------------------------------------+ - * | ... | - * | xfs_dir2_leaf_entry_t | - * | xfs_dir2_leaf_entry_t | - * +-------------------------------------------------+ - * | xfs_dir2_block_tail_t | - * +-------------------------------------------------+ - * - * As all the entries are variable size structures the accessors in this - * file and xfs_dir2_data.h should be used to iterate over them. - */ -struct uio; -struct xfs_dabuf; -struct xfs_da_args; -struct xfs_dir2_data_hdr; -struct xfs_dir2_leaf_entry; -struct xfs_inode; -struct xfs_mount; -struct xfs_trans; - -#define XFS_DIR2_BLOCK_MAGIC 0x58443242 /* XD2B: for one block dirs */ - -typedef struct xfs_dir2_block_tail { - __be32 count; /* count of leaf entries */ - __be32 stale; /* count of stale lf entries */ -} xfs_dir2_block_tail_t; - -/* - * Pointer to the leaf header embedded in a data block (1-block format) - */ -static inline xfs_dir2_block_tail_t * -xfs_dir2_block_tail_p(struct xfs_mount *mp, xfs_dir2_data_hdr_t *hdr) -{ - return ((xfs_dir2_block_tail_t *)((char *)hdr + mp->m_dirblksize)) - 1; -} - -/* - * Pointer to the leaf entries embedded in a data block (1-block format) - */ -static inline struct xfs_dir2_leaf_entry * -xfs_dir2_block_leaf_p(xfs_dir2_block_tail_t *btp) -{ - return ((struct xfs_dir2_leaf_entry *)btp) - be32_to_cpu(btp->count); -} - -/* - * Function declarations. - */ -extern int xfs_dir2_block_addname(struct xfs_da_args *args); -extern int xfs_dir2_block_getdents(struct xfs_inode *dp, void *dirent, - xfs_off_t *offset, filldir_t filldir); -extern int xfs_dir2_block_lookup(struct xfs_da_args *args); -extern int xfs_dir2_block_removename(struct xfs_da_args *args); -extern int xfs_dir2_block_replace(struct xfs_da_args *args); -extern int xfs_dir2_leaf_to_block(struct xfs_da_args *args, - struct xfs_dabuf *lbp, struct xfs_dabuf *dbp); -extern int xfs_dir2_sf_to_block(struct xfs_da_args *args); - -#endif /* __XFS_DIR2_BLOCK_H__ */ diff --git a/fs/xfs/xfs_dir2_data.c b/fs/xfs/xfs_dir2_data.c index 32dca4c531a6..5bbe2a8a023f 100644 --- a/fs/xfs/xfs_dir2_data.c +++ b/fs/xfs/xfs_dir2_data.c @@ -23,16 +23,13 @@ #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_mount.h" #include "xfs_da_btree.h" #include "xfs_bmap_btree.h" -#include "xfs_dir2_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" -#include "xfs_dir2_data.h" -#include "xfs_dir2_leaf.h" -#include "xfs_dir2_block.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2_priv.h" #include "xfs_error.h" STATIC xfs_dir2_data_free_t * diff --git a/fs/xfs/xfs_dir2_data.h b/fs/xfs/xfs_dir2_data.h deleted file mode 100644 index c50512584ebf..000000000000 --- a/fs/xfs/xfs_dir2_data.h +++ /dev/null @@ -1,182 +0,0 @@ -/* - * Copyright (c) 2000,2005 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_DIR2_DATA_H__ -#define __XFS_DIR2_DATA_H__ - -/* - * Directory format 2, data block structures. - * - * A pure data block looks like the following drawing on disk: - * - * +-------------------------------------------------+ - * | xfs_dir2_data_hdr_t | - * +-------------------------------------------------+ - * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | - * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | - * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | - * | ... | - * +-------------------------------------------------+ - * | unused space | - * +-------------------------------------------------+ - * - * As all the entries are variable size structures the accessors in this - * file should be used to iterate over them. - */ - -struct xfs_dabuf; -struct xfs_da_args; -struct xfs_inode; -struct xfs_trans; - -/* - * Constants. - */ -#define XFS_DIR2_DATA_MAGIC 0x58443244 /* XD2D: for multiblock dirs */ -#define XFS_DIR2_DATA_ALIGN_LOG 3 /* i.e., 8 bytes */ -#define XFS_DIR2_DATA_ALIGN (1 << XFS_DIR2_DATA_ALIGN_LOG) -#define XFS_DIR2_DATA_FREE_TAG 0xffff -#define XFS_DIR2_DATA_FD_COUNT 3 - -/* - * Directory address space divided into sections, - * spaces separated by 32GB. - */ -#define XFS_DIR2_SPACE_SIZE (1ULL << (32 + XFS_DIR2_DATA_ALIGN_LOG)) -#define XFS_DIR2_DATA_SPACE 0 -#define XFS_DIR2_DATA_OFFSET (XFS_DIR2_DATA_SPACE * XFS_DIR2_SPACE_SIZE) -#define XFS_DIR2_DATA_FIRSTDB(mp) \ - xfs_dir2_byte_to_db(mp, XFS_DIR2_DATA_OFFSET) - -/* - * Offsets of . and .. in data space (always block 0) - */ -#define XFS_DIR2_DATA_DOT_OFFSET \ - ((xfs_dir2_data_aoff_t)sizeof(xfs_dir2_data_hdr_t)) -#define XFS_DIR2_DATA_DOTDOT_OFFSET \ - (XFS_DIR2_DATA_DOT_OFFSET + xfs_dir2_data_entsize(1)) -#define XFS_DIR2_DATA_FIRST_OFFSET \ - (XFS_DIR2_DATA_DOTDOT_OFFSET + xfs_dir2_data_entsize(2)) - -/* - * Structures. - */ - -/* - * Describe a free area in the data block. - * The freespace will be formatted as a xfs_dir2_data_unused_t. - */ -typedef struct xfs_dir2_data_free { - __be16 offset; /* start of freespace */ - __be16 length; /* length of freespace */ -} xfs_dir2_data_free_t; - -/* - * Header for the data blocks. - * Always at the beginning of a directory-sized block. - * The code knows that XFS_DIR2_DATA_FD_COUNT is 3. - */ -typedef struct xfs_dir2_data_hdr { - __be32 magic; /* XFS_DIR2_DATA_MAGIC */ - /* or XFS_DIR2_BLOCK_MAGIC */ - xfs_dir2_data_free_t bestfree[XFS_DIR2_DATA_FD_COUNT]; -} xfs_dir2_data_hdr_t; - -/* - * Active entry in a data block. Aligned to 8 bytes. - * - * After the variable length name field there is a 2 byte tag field, which - * can be accessed using xfs_dir2_data_entry_tag_p. - */ -typedef struct xfs_dir2_data_entry { - __be64 inumber; /* inode number */ - __u8 namelen; /* name length */ - __u8 name[]; /* name bytes, no null */ - /* __be16 tag; */ /* starting offset of us */ -} xfs_dir2_data_entry_t; - -/* - * Unused entry in a data block. Aligned to 8 bytes. - * Tag appears as the last 2 bytes. - */ -typedef struct xfs_dir2_data_unused { - __be16 freetag; /* XFS_DIR2_DATA_FREE_TAG */ - __be16 length; /* total free length */ - /* variable offset */ - __be16 tag; /* starting offset of us */ -} xfs_dir2_data_unused_t; - -/* - * Size of a data entry. - */ -static inline int xfs_dir2_data_entsize(int n) -{ - return (int)roundup(offsetof(xfs_dir2_data_entry_t, name[0]) + (n) + \ - (uint)sizeof(xfs_dir2_data_off_t), XFS_DIR2_DATA_ALIGN); -} - -/* - * Pointer to an entry's tag word. - */ -static inline __be16 * -xfs_dir2_data_entry_tag_p(xfs_dir2_data_entry_t *dep) -{ - return (__be16 *)((char *)dep + - xfs_dir2_data_entsize(dep->namelen) - sizeof(__be16)); -} - -/* - * Pointer to a freespace's tag word. - */ -static inline __be16 * -xfs_dir2_data_unused_tag_p(xfs_dir2_data_unused_t *dup) -{ - return (__be16 *)((char *)dup + - be16_to_cpu(dup->length) - sizeof(__be16)); -} - -/* - * Function declarations. - */ -#ifdef DEBUG -extern void xfs_dir2_data_check(struct xfs_inode *dp, struct xfs_dabuf *bp); -#else -#define xfs_dir2_data_check(dp,bp) -#endif -extern xfs_dir2_data_free_t *xfs_dir2_data_freeinsert(xfs_dir2_data_hdr_t *hdr, - xfs_dir2_data_unused_t *dup, int *loghead); -extern void xfs_dir2_data_freescan(struct xfs_mount *mp, - xfs_dir2_data_hdr_t *hdr, int *loghead); -extern int xfs_dir2_data_init(struct xfs_da_args *args, xfs_dir2_db_t blkno, - struct xfs_dabuf **bpp); -extern void xfs_dir2_data_log_entry(struct xfs_trans *tp, struct xfs_dabuf *bp, - xfs_dir2_data_entry_t *dep); -extern void xfs_dir2_data_log_header(struct xfs_trans *tp, - struct xfs_dabuf *bp); -extern void xfs_dir2_data_log_unused(struct xfs_trans *tp, struct xfs_dabuf *bp, - xfs_dir2_data_unused_t *dup); -extern void xfs_dir2_data_make_free(struct xfs_trans *tp, struct xfs_dabuf *bp, - xfs_dir2_data_aoff_t offset, - xfs_dir2_data_aoff_t len, int *needlogp, - int *needscanp); -extern void xfs_dir2_data_use_free(struct xfs_trans *tp, struct xfs_dabuf *bp, - xfs_dir2_data_unused_t *dup, - xfs_dir2_data_aoff_t offset, - xfs_dir2_data_aoff_t len, int *needlogp, - int *needscanp); - -#endif /* __XFS_DIR2_DATA_H__ */ diff --git a/fs/xfs/xfs_dir2_format.h b/fs/xfs/xfs_dir2_format.h new file mode 100644 index 000000000000..c3c4839eebd6 --- /dev/null +++ b/fs/xfs/xfs_dir2_format.h @@ -0,0 +1,595 @@ +/* + * 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_DIR2_FORMAT_H__ +#define __XFS_DIR2_FORMAT_H__ + +/* + * Directory version 2. + * + * There are 4 possible formats: + * - shortform - embedded into the inode + * - single block - data with embedded leaf at the end + * - multiple data blocks, single leaf+freeindex block + * - data blocks, node and leaf blocks (btree), freeindex blocks + * + * Note: many node blocks structures and constants are shared with the attr + * code and defined in xfs_da_btree.h. + */ + +#define XFS_DIR2_BLOCK_MAGIC 0x58443242 /* XD2B: single block dirs */ +#define XFS_DIR2_DATA_MAGIC 0x58443244 /* XD2D: multiblock dirs */ +#define XFS_DIR2_FREE_MAGIC 0x58443246 /* XD2F: free index blocks */ + +/* + * Byte offset in data block and shortform entry. + */ +typedef __uint16_t xfs_dir2_data_off_t; +#define NULLDATAOFF 0xffffU +typedef uint xfs_dir2_data_aoff_t; /* argument form */ + +/* + * Normalized offset (in a data block) of the entry, really xfs_dir2_data_off_t. + * Only need 16 bits, this is the byte offset into the single block form. + */ +typedef struct { __uint8_t i[2]; } __arch_pack xfs_dir2_sf_off_t; + +/* + * Offset in data space of a data entry. + */ +typedef __uint32_t xfs_dir2_dataptr_t; +#define XFS_DIR2_MAX_DATAPTR ((xfs_dir2_dataptr_t)0xffffffff) +#define XFS_DIR2_NULL_DATAPTR ((xfs_dir2_dataptr_t)0) + +/* + * Byte offset in a directory. + */ +typedef xfs_off_t xfs_dir2_off_t; + +/* + * Directory block number (logical dirblk in file) + */ +typedef __uint32_t xfs_dir2_db_t; + +/* + * Inode number stored as 8 8-bit values. + */ +typedef struct { __uint8_t i[8]; } xfs_dir2_ino8_t; + +/* + * Inode number stored as 4 8-bit values. + * Works a lot of the time, when all the inode numbers in a directory + * fit in 32 bits. + */ +typedef struct { __uint8_t i[4]; } xfs_dir2_ino4_t; + +typedef union { + xfs_dir2_ino8_t i8; + xfs_dir2_ino4_t i4; +} xfs_dir2_inou_t; +#define XFS_DIR2_MAX_SHORT_INUM ((xfs_ino_t)0xffffffffULL) + +/* + * 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. These "shortform" directories consist of a + * single xfs_dir2_sf_hdr header followed by zero or more xfs_dir2_sf_entry + * structures. Due the different inode number storage size and the variable + * length name field in the xfs_dir2_sf_entry all these structure are + * variable length, and the accessors in this file should be used to iterate + * over them. + */ +typedef struct xfs_dir2_sf_hdr { + __uint8_t count; /* count of entries */ + __uint8_t i8count; /* count of 8-byte inode #s */ + xfs_dir2_inou_t parent; /* parent dir inode number */ +} __arch_pack xfs_dir2_sf_hdr_t; + +typedef struct xfs_dir2_sf_entry { + __u8 namelen; /* actual name length */ + xfs_dir2_sf_off_t offset; /* saved offset */ + __u8 name[]; /* name, variable size */ + /* + * A xfs_dir2_ino8_t or xfs_dir2_ino4_t follows here, at a + * variable offset after the name. + */ +} __arch_pack xfs_dir2_sf_entry_t; + +static inline int xfs_dir2_sf_hdr_size(int i8count) +{ + return sizeof(struct xfs_dir2_sf_hdr) - + (i8count == 0) * + (sizeof(xfs_dir2_ino8_t) - sizeof(xfs_dir2_ino4_t)); +} + +static inline xfs_dir2_data_aoff_t +xfs_dir2_sf_get_offset(xfs_dir2_sf_entry_t *sfep) +{ + return get_unaligned_be16(&sfep->offset.i); +} + +static inline void +xfs_dir2_sf_put_offset(xfs_dir2_sf_entry_t *sfep, xfs_dir2_data_aoff_t off) +{ + put_unaligned_be16(off, &sfep->offset.i); +} + +static inline int +xfs_dir2_sf_entsize(struct xfs_dir2_sf_hdr *hdr, int len) +{ + return sizeof(struct xfs_dir2_sf_entry) + /* namelen + offset */ + len + /* name */ + (hdr->i8count ? /* ino */ + sizeof(xfs_dir2_ino8_t) : + sizeof(xfs_dir2_ino4_t)); +} + +static inline struct xfs_dir2_sf_entry * +xfs_dir2_sf_firstentry(struct xfs_dir2_sf_hdr *hdr) +{ + return (struct xfs_dir2_sf_entry *) + ((char *)hdr + xfs_dir2_sf_hdr_size(hdr->i8count)); +} + +static inline struct xfs_dir2_sf_entry * +xfs_dir2_sf_nextentry(struct xfs_dir2_sf_hdr *hdr, + struct xfs_dir2_sf_entry *sfep) +{ + return (struct xfs_dir2_sf_entry *) + ((char *)sfep + xfs_dir2_sf_entsize(hdr, sfep->namelen)); +} + + +/* + * Data block structures. + * + * A pure data block looks like the following drawing on disk: + * + * +-------------------------------------------------+ + * | xfs_dir2_data_hdr_t | + * +-------------------------------------------------+ + * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | + * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | + * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | + * | ... | + * +-------------------------------------------------+ + * | unused space | + * +-------------------------------------------------+ + * + * As all the entries are variable size structures the accessors below should + * be used to iterate over them. + * + * In addition to the pure data blocks for the data and node formats, + * most structures are also used for the combined data/freespace "block" + * format below. + */ + +#define XFS_DIR2_DATA_ALIGN_LOG 3 /* i.e., 8 bytes */ +#define XFS_DIR2_DATA_ALIGN (1 << XFS_DIR2_DATA_ALIGN_LOG) +#define XFS_DIR2_DATA_FREE_TAG 0xffff +#define XFS_DIR2_DATA_FD_COUNT 3 + +/* + * Directory address space divided into sections, + * spaces separated by 32GB. + */ +#define XFS_DIR2_SPACE_SIZE (1ULL << (32 + XFS_DIR2_DATA_ALIGN_LOG)) +#define XFS_DIR2_DATA_SPACE 0 +#define XFS_DIR2_DATA_OFFSET (XFS_DIR2_DATA_SPACE * XFS_DIR2_SPACE_SIZE) +#define XFS_DIR2_DATA_FIRSTDB(mp) \ + xfs_dir2_byte_to_db(mp, XFS_DIR2_DATA_OFFSET) + +/* + * Offsets of . and .. in data space (always block 0) + */ +#define XFS_DIR2_DATA_DOT_OFFSET \ + ((xfs_dir2_data_aoff_t)sizeof(struct xfs_dir2_data_hdr)) +#define XFS_DIR2_DATA_DOTDOT_OFFSET \ + (XFS_DIR2_DATA_DOT_OFFSET + xfs_dir2_data_entsize(1)) +#define XFS_DIR2_DATA_FIRST_OFFSET \ + (XFS_DIR2_DATA_DOTDOT_OFFSET + xfs_dir2_data_entsize(2)) + +/* + * Describe a free area in the data block. + * + * The freespace will be formatted as a xfs_dir2_data_unused_t. + */ +typedef struct xfs_dir2_data_free { + __be16 offset; /* start of freespace */ + __be16 length; /* length of freespace */ +} xfs_dir2_data_free_t; + +/* + * Header for the data blocks. + * + * The code knows that XFS_DIR2_DATA_FD_COUNT is 3. + */ +typedef struct xfs_dir2_data_hdr { + __be32 magic; /* XFS_DIR2_DATA_MAGIC or */ + /* XFS_DIR2_BLOCK_MAGIC */ + xfs_dir2_data_free_t bestfree[XFS_DIR2_DATA_FD_COUNT]; +} xfs_dir2_data_hdr_t; + +/* + * Active entry in a data block. + * + * Aligned to 8 bytes. After the variable length name field there is a + * 2 byte tag field, which can be accessed using xfs_dir2_data_entry_tag_p. + */ +typedef struct xfs_dir2_data_entry { + __be64 inumber; /* inode number */ + __u8 namelen; /* name length */ + __u8 name[]; /* name bytes, no null */ + /* __be16 tag; */ /* starting offset of us */ +} xfs_dir2_data_entry_t; + +/* + * Unused entry in a data block. + * + * Aligned to 8 bytes. Tag appears as the last 2 bytes and must be accessed + * using xfs_dir2_data_unused_tag_p. + */ +typedef struct xfs_dir2_data_unused { + __be16 freetag; /* XFS_DIR2_DATA_FREE_TAG */ + __be16 length; /* total free length */ + /* variable offset */ + __be16 tag; /* starting offset of us */ +} xfs_dir2_data_unused_t; + +/* + * Size of a data entry. + */ +static inline int xfs_dir2_data_entsize(int n) +{ + return (int)roundup(offsetof(struct xfs_dir2_data_entry, name[0]) + n + + (uint)sizeof(xfs_dir2_data_off_t), XFS_DIR2_DATA_ALIGN); +} + +/* + * Pointer to an entry's tag word. + */ +static inline __be16 * +xfs_dir2_data_entry_tag_p(struct xfs_dir2_data_entry *dep) +{ + return (__be16 *)((char *)dep + + xfs_dir2_data_entsize(dep->namelen) - sizeof(__be16)); +} + +/* + * Pointer to a freespace's tag word. + */ +static inline __be16 * +xfs_dir2_data_unused_tag_p(struct xfs_dir2_data_unused *dup) +{ + return (__be16 *)((char *)dup + + be16_to_cpu(dup->length) - sizeof(__be16)); +} + +/* + * Leaf block structures. + * + * A pure leaf block looks like the following drawing on disk: + * + * +---------------------------+ + * | xfs_dir2_leaf_hdr_t | + * +---------------------------+ + * | xfs_dir2_leaf_entry_t | + * | xfs_dir2_leaf_entry_t | + * | xfs_dir2_leaf_entry_t | + * | xfs_dir2_leaf_entry_t | + * | ... | + * +---------------------------+ + * | xfs_dir2_data_off_t | + * | xfs_dir2_data_off_t | + * | xfs_dir2_data_off_t | + * | ... | + * +---------------------------+ + * | xfs_dir2_leaf_tail_t | + * +---------------------------+ + * + * The xfs_dir2_data_off_t members (bests) and tail are at the end of the block + * for single-leaf (magic = XFS_DIR2_LEAF1_MAGIC) blocks only, but not present + * for directories with separate leaf nodes and free space blocks + * (magic = XFS_DIR2_LEAFN_MAGIC). + * + * As all the entries are variable size structures the accessors below should + * be used to iterate over them. + */ + +/* + * Offset of the leaf/node space. First block in this space + * is the btree root. + */ +#define XFS_DIR2_LEAF_SPACE 1 +#define XFS_DIR2_LEAF_OFFSET (XFS_DIR2_LEAF_SPACE * XFS_DIR2_SPACE_SIZE) +#define XFS_DIR2_LEAF_FIRSTDB(mp) \ + xfs_dir2_byte_to_db(mp, XFS_DIR2_LEAF_OFFSET) + +/* + * Leaf block header. + */ +typedef struct xfs_dir2_leaf_hdr { + xfs_da_blkinfo_t info; /* header for da routines */ + __be16 count; /* count of entries */ + __be16 stale; /* count of stale entries */ +} xfs_dir2_leaf_hdr_t; + +/* + * Leaf block entry. + */ +typedef struct xfs_dir2_leaf_entry { + __be32 hashval; /* hash value of name */ + __be32 address; /* address of data entry */ +} xfs_dir2_leaf_entry_t; + +/* + * Leaf block tail. + */ +typedef struct xfs_dir2_leaf_tail { + __be32 bestcount; +} xfs_dir2_leaf_tail_t; + +/* + * Leaf block. + */ +typedef struct xfs_dir2_leaf { + xfs_dir2_leaf_hdr_t hdr; /* leaf header */ + xfs_dir2_leaf_entry_t ents[]; /* entries */ +} xfs_dir2_leaf_t; + +/* + * DB blocks here are logical directory block numbers, not filesystem blocks. + */ + +static inline int xfs_dir2_max_leaf_ents(struct xfs_mount *mp) +{ + return (mp->m_dirblksize - (uint)sizeof(struct xfs_dir2_leaf_hdr)) / + (uint)sizeof(struct xfs_dir2_leaf_entry); +} + +/* + * Get address of the bestcount field in the single-leaf block. + */ +static inline struct xfs_dir2_leaf_tail * +xfs_dir2_leaf_tail_p(struct xfs_mount *mp, struct xfs_dir2_leaf *lp) +{ + return (struct xfs_dir2_leaf_tail *) + ((char *)lp + mp->m_dirblksize - + sizeof(struct xfs_dir2_leaf_tail)); +} + +/* + * Get address of the bests array in the single-leaf block. + */ +static inline __be16 * +xfs_dir2_leaf_bests_p(struct xfs_dir2_leaf_tail *ltp) +{ + return (__be16 *)ltp - be32_to_cpu(ltp->bestcount); +} + +/* + * Convert dataptr to byte in file space + */ +static inline xfs_dir2_off_t +xfs_dir2_dataptr_to_byte(struct xfs_mount *mp, xfs_dir2_dataptr_t dp) +{ + return (xfs_dir2_off_t)dp << XFS_DIR2_DATA_ALIGN_LOG; +} + +/* + * Convert byte in file space to dataptr. It had better be aligned. + */ +static inline xfs_dir2_dataptr_t +xfs_dir2_byte_to_dataptr(struct xfs_mount *mp, xfs_dir2_off_t by) +{ + return (xfs_dir2_dataptr_t)(by >> XFS_DIR2_DATA_ALIGN_LOG); +} + +/* + * Convert byte in space to (DB) block + */ +static inline xfs_dir2_db_t +xfs_dir2_byte_to_db(struct xfs_mount *mp, xfs_dir2_off_t by) +{ + return (xfs_dir2_db_t) + (by >> (mp->m_sb.sb_blocklog + mp->m_sb.sb_dirblklog)); +} + +/* + * Convert dataptr to a block number + */ +static inline xfs_dir2_db_t +xfs_dir2_dataptr_to_db(struct xfs_mount *mp, xfs_dir2_dataptr_t dp) +{ + return xfs_dir2_byte_to_db(mp, xfs_dir2_dataptr_to_byte(mp, dp)); +} + +/* + * Convert byte in space to offset in a block + */ +static inline xfs_dir2_data_aoff_t +xfs_dir2_byte_to_off(struct xfs_mount *mp, xfs_dir2_off_t by) +{ + return (xfs_dir2_data_aoff_t)(by & + ((1 << (mp->m_sb.sb_blocklog + mp->m_sb.sb_dirblklog)) - 1)); +} + +/* + * Convert dataptr to a byte offset in a block + */ +static inline xfs_dir2_data_aoff_t +xfs_dir2_dataptr_to_off(struct xfs_mount *mp, xfs_dir2_dataptr_t dp) +{ + return xfs_dir2_byte_to_off(mp, xfs_dir2_dataptr_to_byte(mp, dp)); +} + +/* + * Convert block and offset to byte in space + */ +static inline xfs_dir2_off_t +xfs_dir2_db_off_to_byte(struct xfs_mount *mp, xfs_dir2_db_t db, + xfs_dir2_data_aoff_t o) +{ + return ((xfs_dir2_off_t)db << + (mp->m_sb.sb_blocklog + mp->m_sb.sb_dirblklog)) + o; +} + +/* + * Convert block (DB) to block (dablk) + */ +static inline xfs_dablk_t +xfs_dir2_db_to_da(struct xfs_mount *mp, xfs_dir2_db_t db) +{ + return (xfs_dablk_t)(db << mp->m_sb.sb_dirblklog); +} + +/* + * Convert byte in space to (DA) block + */ +static inline xfs_dablk_t +xfs_dir2_byte_to_da(struct xfs_mount *mp, xfs_dir2_off_t by) +{ + return xfs_dir2_db_to_da(mp, xfs_dir2_byte_to_db(mp, by)); +} + +/* + * Convert block and offset to dataptr + */ +static inline xfs_dir2_dataptr_t +xfs_dir2_db_off_to_dataptr(struct xfs_mount *mp, xfs_dir2_db_t db, + xfs_dir2_data_aoff_t o) +{ + return xfs_dir2_byte_to_dataptr(mp, xfs_dir2_db_off_to_byte(mp, db, o)); +} + +/* + * Convert block (dablk) to block (DB) + */ +static inline xfs_dir2_db_t +xfs_dir2_da_to_db(struct xfs_mount *mp, xfs_dablk_t da) +{ + return (xfs_dir2_db_t)(da >> mp->m_sb.sb_dirblklog); +} + +/* + * Convert block (dablk) to byte offset in space + */ +static inline xfs_dir2_off_t +xfs_dir2_da_to_byte(struct xfs_mount *mp, xfs_dablk_t da) +{ + return xfs_dir2_db_off_to_byte(mp, xfs_dir2_da_to_db(mp, da), 0); +} + +/* + * Free space block defintions for the node format. + */ + +/* + * Offset of the freespace index. + */ +#define XFS_DIR2_FREE_SPACE 2 +#define XFS_DIR2_FREE_OFFSET (XFS_DIR2_FREE_SPACE * XFS_DIR2_SPACE_SIZE) +#define XFS_DIR2_FREE_FIRSTDB(mp) \ + xfs_dir2_byte_to_db(mp, XFS_DIR2_FREE_OFFSET) + +typedef struct xfs_dir2_free_hdr { + __be32 magic; /* XFS_DIR2_FREE_MAGIC */ + __be32 firstdb; /* db of first entry */ + __be32 nvalid; /* count of valid entries */ + __be32 nused; /* count of used entries */ +} xfs_dir2_free_hdr_t; + +typedef struct xfs_dir2_free { + xfs_dir2_free_hdr_t hdr; /* block header */ + __be16 bests[1]; /* best free counts */ + /* unused entries are -1 */ +} xfs_dir2_free_t; + +#define XFS_DIR2_MAX_FREE_BESTS(mp) \ + (((mp)->m_dirblksize - (uint)sizeof(struct xfs_dir2_free_hdr)) / \ + (uint)sizeof(xfs_dir2_data_off_t)) + +/* + * Convert data space db to the corresponding free db. + */ +static inline xfs_dir2_db_t +xfs_dir2_db_to_fdb(struct xfs_mount *mp, xfs_dir2_db_t db) +{ + return XFS_DIR2_FREE_FIRSTDB(mp) + db / XFS_DIR2_MAX_FREE_BESTS(mp); +} + +/* + * Convert data space db to the corresponding index in a free db. + */ +static inline int +xfs_dir2_db_to_fdindex(struct xfs_mount *mp, xfs_dir2_db_t db) +{ + return db % XFS_DIR2_MAX_FREE_BESTS(mp); +} + +/* + * Single block format. + * + * The single block format looks like the following drawing on disk: + * + * +-------------------------------------------------+ + * | xfs_dir2_data_hdr_t | + * +-------------------------------------------------+ + * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | + * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t | + * | xfs_dir2_data_entry_t OR xfs_dir2_data_unused_t : + * | ... | + * +-------------------------------------------------+ + * | unused space | + * +-------------------------------------------------+ + * | ... | + * | xfs_dir2_leaf_entry_t | + * | xfs_dir2_leaf_entry_t | + * +-------------------------------------------------+ + * | xfs_dir2_block_tail_t | + * +-------------------------------------------------+ + * + * As all the entries are variable size structures the accessors below should + * be used to iterate over them. + */ + +typedef struct xfs_dir2_block_tail { + __be32 count; /* count of leaf entries */ + __be32 stale; /* count of stale lf entries */ +} xfs_dir2_block_tail_t; + +/* + * Pointer to the leaf header embedded in a data block (1-block format) + */ +static inline struct xfs_dir2_block_tail * +xfs_dir2_block_tail_p(struct xfs_mount *mp, struct xfs_dir2_data_hdr *hdr) +{ + return ((struct xfs_dir2_block_tail *) + ((char *)hdr + mp->m_dirblksize)) - 1; +} + +/* + * Pointer to the leaf entries embedded in a data block (1-block format) + */ +static inline struct xfs_dir2_leaf_entry * +xfs_dir2_block_leaf_p(struct xfs_dir2_block_tail *btp) +{ + return ((struct xfs_dir2_leaf_entry *)btp) - be32_to_cpu(btp->count); +} + +#endif /* __XFS_DIR2_FORMAT_H__ */ diff --git a/fs/xfs/xfs_dir2_leaf.c b/fs/xfs/xfs_dir2_leaf.c index d629b888ca28..487036d3751b 100644 --- a/fs/xfs/xfs_dir2_leaf.c +++ b/fs/xfs/xfs_dir2_leaf.c @@ -24,18 +24,14 @@ #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_mount.h" #include "xfs_da_btree.h" #include "xfs_bmap_btree.h" -#include "xfs_dir2_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_bmap.h" -#include "xfs_dir2_data.h" -#include "xfs_dir2_leaf.h" -#include "xfs_dir2_block.h" -#include "xfs_dir2_node.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2_priv.h" #include "xfs_error.h" #include "xfs_trace.h" diff --git a/fs/xfs/xfs_dir2_leaf.h b/fs/xfs/xfs_dir2_leaf.h deleted file mode 100644 index 140281adc7e5..000000000000 --- a/fs/xfs/xfs_dir2_leaf.h +++ /dev/null @@ -1,281 +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_DIR2_LEAF_H__ -#define __XFS_DIR2_LEAF_H__ - -/* - * Directory format 2, leaf block structures. - * - * A pure data block looks like the following drawing on disk: - * - * +---------------------------+ - * | xfs_dir2_leaf_hdr_t | - * +---------------------------+ - * | xfs_dir2_leaf_entry_t | - * | xfs_dir2_leaf_entry_t | - * | xfs_dir2_leaf_entry_t | - * | xfs_dir2_leaf_entry_t | - * | ... | - * +---------------------------+ - * | xfs_dir2_data_off_t | - * | xfs_dir2_data_off_t | - * | xfs_dir2_data_off_t | - * | ... | - * +---------------------------+ - * | xfs_dir2_leaf_tail_t | - * +---------------------------+ - * - * The bests (xfs_dir2_data_off_t members) and tail are at the end of the - * block for single-leaf only (magic = XFS_DIR2_LEAF1_MAGIC not - * XFS_DIR2_LEAFN_MAGIC). - * - * As all the entries are variable size structures the accessors in this - * file should be used to iterate over them. - */ - -struct uio; -struct xfs_dabuf; -struct xfs_da_args; -struct xfs_inode; -struct xfs_mount; -struct xfs_trans; - -/* - * Offset of the leaf/node space. First block in this space - * is the btree root. - */ -#define XFS_DIR2_LEAF_SPACE 1 -#define XFS_DIR2_LEAF_OFFSET (XFS_DIR2_LEAF_SPACE * XFS_DIR2_SPACE_SIZE) -#define XFS_DIR2_LEAF_FIRSTDB(mp) \ - xfs_dir2_byte_to_db(mp, XFS_DIR2_LEAF_OFFSET) - -/* - * Offset in data space of a data entry. - */ -typedef __uint32_t xfs_dir2_dataptr_t; -#define XFS_DIR2_MAX_DATAPTR ((xfs_dir2_dataptr_t)0xffffffff) -#define XFS_DIR2_NULL_DATAPTR ((xfs_dir2_dataptr_t)0) - -/* - * Leaf block header. - */ -typedef struct xfs_dir2_leaf_hdr { - xfs_da_blkinfo_t info; /* header for da routines */ - __be16 count; /* count of entries */ - __be16 stale; /* count of stale entries */ -} xfs_dir2_leaf_hdr_t; - -/* - * Leaf block entry. - */ -typedef struct xfs_dir2_leaf_entry { - __be32 hashval; /* hash value of name */ - __be32 address; /* address of data entry */ -} xfs_dir2_leaf_entry_t; - -/* - * Leaf block tail. - */ -typedef struct xfs_dir2_leaf_tail { - __be32 bestcount; -} xfs_dir2_leaf_tail_t; - -/* - * Leaf block. - */ -typedef struct xfs_dir2_leaf { - xfs_dir2_leaf_hdr_t hdr; /* leaf header */ - xfs_dir2_leaf_entry_t ents[]; /* entries */ -} xfs_dir2_leaf_t; - -/* - * DB blocks here are logical directory block numbers, not filesystem blocks. - */ - -static inline int xfs_dir2_max_leaf_ents(struct xfs_mount *mp) -{ - return (int)(((mp)->m_dirblksize - (uint)sizeof(xfs_dir2_leaf_hdr_t)) / - (uint)sizeof(xfs_dir2_leaf_entry_t)); -} - -/* - * Get address of the bestcount field in the single-leaf block. - */ -static inline xfs_dir2_leaf_tail_t * -xfs_dir2_leaf_tail_p(struct xfs_mount *mp, xfs_dir2_leaf_t *lp) -{ - return (xfs_dir2_leaf_tail_t *) - ((char *)(lp) + (mp)->m_dirblksize - - (uint)sizeof(xfs_dir2_leaf_tail_t)); -} - -/* - * Get address of the bests array in the single-leaf block. - */ -static inline __be16 * -xfs_dir2_leaf_bests_p(xfs_dir2_leaf_tail_t *ltp) -{ - return (__be16 *)ltp - be32_to_cpu(ltp->bestcount); -} - -/* - * Convert dataptr to byte in file space - */ -static inline xfs_dir2_off_t -xfs_dir2_dataptr_to_byte(struct xfs_mount *mp, xfs_dir2_dataptr_t dp) -{ - return (xfs_dir2_off_t)(dp) << XFS_DIR2_DATA_ALIGN_LOG; -} - -/* - * Convert byte in file space to dataptr. It had better be aligned. - */ -static inline xfs_dir2_dataptr_t -xfs_dir2_byte_to_dataptr(struct xfs_mount *mp, xfs_dir2_off_t by) -{ - return (xfs_dir2_dataptr_t)((by) >> XFS_DIR2_DATA_ALIGN_LOG); -} - -/* - * Convert byte in space to (DB) block - */ -static inline xfs_dir2_db_t -xfs_dir2_byte_to_db(struct xfs_mount *mp, xfs_dir2_off_t by) -{ - return (xfs_dir2_db_t)((by) >> \ - ((mp)->m_sb.sb_blocklog + (mp)->m_sb.sb_dirblklog)); -} - -/* - * Convert dataptr to a block number - */ -static inline xfs_dir2_db_t -xfs_dir2_dataptr_to_db(struct xfs_mount *mp, xfs_dir2_dataptr_t dp) -{ - return xfs_dir2_byte_to_db(mp, xfs_dir2_dataptr_to_byte(mp, dp)); -} - -/* - * Convert byte in space to offset in a block - */ -static inline xfs_dir2_data_aoff_t -xfs_dir2_byte_to_off(struct xfs_mount *mp, xfs_dir2_off_t by) -{ - return (xfs_dir2_data_aoff_t)((by) & \ - ((1 << ((mp)->m_sb.sb_blocklog + (mp)->m_sb.sb_dirblklog)) - 1)); -} - -/* - * Convert dataptr to a byte offset in a block - */ -static inline xfs_dir2_data_aoff_t -xfs_dir2_dataptr_to_off(struct xfs_mount *mp, xfs_dir2_dataptr_t dp) -{ - return xfs_dir2_byte_to_off(mp, xfs_dir2_dataptr_to_byte(mp, dp)); -} - -/* - * Convert block and offset to byte in space - */ -static inline xfs_dir2_off_t -xfs_dir2_db_off_to_byte(struct xfs_mount *mp, xfs_dir2_db_t db, - xfs_dir2_data_aoff_t o) -{ - return ((xfs_dir2_off_t)(db) << \ - ((mp)->m_sb.sb_blocklog + (mp)->m_sb.sb_dirblklog)) + (o); -} - -/* - * Convert block (DB) to block (dablk) - */ -static inline xfs_dablk_t -xfs_dir2_db_to_da(struct xfs_mount *mp, xfs_dir2_db_t db) -{ - return (xfs_dablk_t)((db) << (mp)->m_sb.sb_dirblklog); -} - -/* - * Convert byte in space to (DA) block - */ -static inline xfs_dablk_t -xfs_dir2_byte_to_da(struct xfs_mount *mp, xfs_dir2_off_t by) -{ - return xfs_dir2_db_to_da(mp, xfs_dir2_byte_to_db(mp, by)); -} - -/* - * Convert block and offset to dataptr - */ -static inline xfs_dir2_dataptr_t -xfs_dir2_db_off_to_dataptr(struct xfs_mount *mp, xfs_dir2_db_t db, - xfs_dir2_data_aoff_t o) -{ - return xfs_dir2_byte_to_dataptr(mp, xfs_dir2_db_off_to_byte(mp, db, o)); -} - -/* - * Convert block (dablk) to block (DB) - */ -static inline xfs_dir2_db_t -xfs_dir2_da_to_db(struct xfs_mount *mp, xfs_dablk_t da) -{ - return (xfs_dir2_db_t)((da) >> (mp)->m_sb.sb_dirblklog); -} - -/* - * Convert block (dablk) to byte offset in space - */ -static inline xfs_dir2_off_t -xfs_dir2_da_to_byte(struct xfs_mount *mp, xfs_dablk_t da) -{ - return xfs_dir2_db_off_to_byte(mp, xfs_dir2_da_to_db(mp, da), 0); -} - -/* - * Function declarations. - */ -extern int xfs_dir2_block_to_leaf(struct xfs_da_args *args, - struct xfs_dabuf *dbp); -extern int xfs_dir2_leaf_addname(struct xfs_da_args *args); -extern void xfs_dir2_leaf_compact(struct xfs_da_args *args, - struct xfs_dabuf *bp); -extern void xfs_dir2_leaf_compact_x1(struct xfs_dabuf *bp, int *indexp, - int *lowstalep, int *highstalep, - int *lowlogp, int *highlogp); -extern int xfs_dir2_leaf_getdents(struct xfs_inode *dp, void *dirent, - size_t bufsize, xfs_off_t *offset, - filldir_t filldir); -extern int xfs_dir2_leaf_init(struct xfs_da_args *args, xfs_dir2_db_t bno, - struct xfs_dabuf **bpp, int magic); -extern void xfs_dir2_leaf_log_ents(struct xfs_trans *tp, struct xfs_dabuf *bp, - int first, int last); -extern void xfs_dir2_leaf_log_header(struct xfs_trans *tp, - struct xfs_dabuf *bp); -extern int xfs_dir2_leaf_lookup(struct xfs_da_args *args); -extern int xfs_dir2_leaf_removename(struct xfs_da_args *args); -extern int xfs_dir2_leaf_replace(struct xfs_da_args *args); -extern int xfs_dir2_leaf_search_hash(struct xfs_da_args *args, - struct xfs_dabuf *lbp); -extern int xfs_dir2_leaf_trim_data(struct xfs_da_args *args, - struct xfs_dabuf *lbp, xfs_dir2_db_t db); -extern xfs_dir2_leaf_entry_t *xfs_dir2_leaf_find_entry(xfs_dir2_leaf_t *, int, - int, int, int, - int *, int *); -extern int xfs_dir2_node_to_leaf(struct xfs_da_state *state); - -#endif /* __XFS_DIR2_LEAF_H__ */ diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c index 14571cdeb33f..ec0a23e96705 100644 --- a/fs/xfs/xfs_dir2_node.c +++ b/fs/xfs/xfs_dir2_node.c @@ -23,18 +23,14 @@ #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_mount.h" #include "xfs_da_btree.h" #include "xfs_bmap_btree.h" -#include "xfs_dir2_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_bmap.h" -#include "xfs_dir2_data.h" -#include "xfs_dir2_leaf.h" -#include "xfs_dir2_block.h" -#include "xfs_dir2_node.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2_priv.h" #include "xfs_error.h" #include "xfs_trace.h" diff --git a/fs/xfs/xfs_dir2_node.h b/fs/xfs/xfs_dir2_node.h deleted file mode 100644 index 82dfe7147195..000000000000 --- a/fs/xfs/xfs_dir2_node.h +++ /dev/null @@ -1,100 +0,0 @@ -/* - * Copyright (c) 2000,2005 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_DIR2_NODE_H__ -#define __XFS_DIR2_NODE_H__ - -/* - * Directory version 2, btree node format structures - */ - -struct uio; -struct xfs_dabuf; -struct xfs_da_args; -struct xfs_da_state; -struct xfs_da_state_blk; -struct xfs_inode; -struct xfs_trans; - -/* - * Offset of the freespace index. - */ -#define XFS_DIR2_FREE_SPACE 2 -#define XFS_DIR2_FREE_OFFSET (XFS_DIR2_FREE_SPACE * XFS_DIR2_SPACE_SIZE) -#define XFS_DIR2_FREE_FIRSTDB(mp) \ - xfs_dir2_byte_to_db(mp, XFS_DIR2_FREE_OFFSET) - -#define XFS_DIR2_FREE_MAGIC 0x58443246 /* XD2F */ - -typedef struct xfs_dir2_free_hdr { - __be32 magic; /* XFS_DIR2_FREE_MAGIC */ - __be32 firstdb; /* db of first entry */ - __be32 nvalid; /* count of valid entries */ - __be32 nused; /* count of used entries */ -} xfs_dir2_free_hdr_t; - -typedef struct xfs_dir2_free { - xfs_dir2_free_hdr_t hdr; /* block header */ - __be16 bests[1]; /* best free counts */ - /* unused entries are -1 */ -} xfs_dir2_free_t; - -#define XFS_DIR2_MAX_FREE_BESTS(mp) \ - (((mp)->m_dirblksize - (uint)sizeof(xfs_dir2_free_hdr_t)) / \ - (uint)sizeof(xfs_dir2_data_off_t)) - -/* - * Convert data space db to the corresponding free db. - */ -static inline xfs_dir2_db_t -xfs_dir2_db_to_fdb(struct xfs_mount *mp, xfs_dir2_db_t db) -{ - return (XFS_DIR2_FREE_FIRSTDB(mp) + (db) / XFS_DIR2_MAX_FREE_BESTS(mp)); -} - -/* - * Convert data space db to the corresponding index in a free db. - */ -static inline int -xfs_dir2_db_to_fdindex(struct xfs_mount *mp, xfs_dir2_db_t db) -{ - return ((db) % XFS_DIR2_MAX_FREE_BESTS(mp)); -} - -extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args, - struct xfs_dabuf *lbp); -extern xfs_dahash_t xfs_dir2_leafn_lasthash(struct xfs_dabuf *bp, int *count); -extern int xfs_dir2_leafn_lookup_int(struct xfs_dabuf *bp, - struct xfs_da_args *args, int *indexp, - struct xfs_da_state *state); -extern int xfs_dir2_leafn_order(struct xfs_dabuf *leaf1_bp, - struct xfs_dabuf *leaf2_bp); -extern int xfs_dir2_leafn_split(struct xfs_da_state *state, - struct xfs_da_state_blk *oldblk, - struct xfs_da_state_blk *newblk); -extern int xfs_dir2_leafn_toosmall(struct xfs_da_state *state, int *action); -extern void xfs_dir2_leafn_unbalance(struct xfs_da_state *state, - struct xfs_da_state_blk *drop_blk, - struct xfs_da_state_blk *save_blk); -extern int xfs_dir2_node_addname(struct xfs_da_args *args); -extern int xfs_dir2_node_lookup(struct xfs_da_args *args); -extern int xfs_dir2_node_removename(struct xfs_da_args *args); -extern int xfs_dir2_node_replace(struct xfs_da_args *args); -extern int xfs_dir2_node_trim_free(struct xfs_da_args *args, xfs_fileoff_t fo, - int *rvalp); - -#endif /* __XFS_DIR2_NODE_H__ */ diff --git a/fs/xfs/xfs_dir2_priv.h b/fs/xfs/xfs_dir2_priv.h new file mode 100644 index 000000000000..067f403ecf8a --- /dev/null +++ b/fs/xfs/xfs_dir2_priv.h @@ -0,0 +1,135 @@ +/* + * 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_DIR2_PRIV_H__ +#define __XFS_DIR2_PRIV_H__ + +/* xfs_dir2.c */ +extern int xfs_dir_ino_validate(struct xfs_mount *mp, xfs_ino_t ino); +extern int xfs_dir2_isblock(struct xfs_trans *tp, struct xfs_inode *dp, int *r); +extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp, int *r); +extern int xfs_dir2_grow_inode(struct xfs_da_args *args, int space, + xfs_dir2_db_t *dbp); +extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db, + struct xfs_dabuf *bp); +extern int xfs_dir_cilookup_result(struct xfs_da_args *args, + const unsigned char *name, int len); + +/* xfs_dir2_block.c */ +extern int xfs_dir2_block_addname(struct xfs_da_args *args); +extern int xfs_dir2_block_getdents(struct xfs_inode *dp, void *dirent, + xfs_off_t *offset, filldir_t filldir); +extern int xfs_dir2_block_lookup(struct xfs_da_args *args); +extern int xfs_dir2_block_removename(struct xfs_da_args *args); +extern int xfs_dir2_block_replace(struct xfs_da_args *args); +extern int xfs_dir2_leaf_to_block(struct xfs_da_args *args, + struct xfs_dabuf *lbp, struct xfs_dabuf *dbp); + +/* xfs_dir2_data.c */ +#ifdef DEBUG +extern void xfs_dir2_data_check(struct xfs_inode *dp, struct xfs_dabuf *bp); +#else +#define xfs_dir2_data_check(dp,bp) +#endif +extern struct xfs_dir2_data_free * +xfs_dir2_data_freeinsert(struct xfs_dir2_data_hdr *hdr, + struct xfs_dir2_data_unused *dup, int *loghead); +extern void xfs_dir2_data_freescan(struct xfs_mount *mp, + struct xfs_dir2_data_hdr *hdr, int *loghead); +extern int xfs_dir2_data_init(struct xfs_da_args *args, xfs_dir2_db_t blkno, + struct xfs_dabuf **bpp); +extern void xfs_dir2_data_log_entry(struct xfs_trans *tp, struct xfs_dabuf *bp, + struct xfs_dir2_data_entry *dep); +extern void xfs_dir2_data_log_header(struct xfs_trans *tp, + struct xfs_dabuf *bp); +extern void xfs_dir2_data_log_unused(struct xfs_trans *tp, struct xfs_dabuf *bp, + struct xfs_dir2_data_unused *dup); +extern void xfs_dir2_data_make_free(struct xfs_trans *tp, struct xfs_dabuf *bp, + xfs_dir2_data_aoff_t offset, xfs_dir2_data_aoff_t len, + int *needlogp, int *needscanp); +extern void xfs_dir2_data_use_free(struct xfs_trans *tp, struct xfs_dabuf *bp, + struct xfs_dir2_data_unused *dup, xfs_dir2_data_aoff_t offset, + xfs_dir2_data_aoff_t len, int *needlogp, int *needscanp); + +/* xfs_dir2_leaf.c */ +extern int xfs_dir2_block_to_leaf(struct xfs_da_args *args, + struct xfs_dabuf *dbp); +extern int xfs_dir2_leaf_addname(struct xfs_da_args *args); +extern void xfs_dir2_leaf_compact(struct xfs_da_args *args, + struct xfs_dabuf *bp); +extern void xfs_dir2_leaf_compact_x1(struct xfs_dabuf *bp, int *indexp, + int *lowstalep, int *highstalep, int *lowlogp, int *highlogp); +extern int xfs_dir2_leaf_getdents(struct xfs_inode *dp, void *dirent, + size_t bufsize, xfs_off_t *offset, filldir_t filldir); +extern int xfs_dir2_leaf_init(struct xfs_da_args *args, xfs_dir2_db_t bno, + struct xfs_dabuf **bpp, int magic); +extern void xfs_dir2_leaf_log_ents(struct xfs_trans *tp, struct xfs_dabuf *bp, + int first, int last); +extern void xfs_dir2_leaf_log_header(struct xfs_trans *tp, + struct xfs_dabuf *bp); +extern int xfs_dir2_leaf_lookup(struct xfs_da_args *args); +extern int xfs_dir2_leaf_removename(struct xfs_da_args *args); +extern int xfs_dir2_leaf_replace(struct xfs_da_args *args); +extern int xfs_dir2_leaf_search_hash(struct xfs_da_args *args, + struct xfs_dabuf *lbp); +extern int xfs_dir2_leaf_trim_data(struct xfs_da_args *args, + struct xfs_dabuf *lbp, xfs_dir2_db_t db); +extern struct xfs_dir2_leaf_entry * +xfs_dir2_leaf_find_entry(struct xfs_dir2_leaf *leaf, int index, int compact, + int lowstale, int highstale, + int *lfloglow, int *lfloghigh); +extern int xfs_dir2_node_to_leaf(struct xfs_da_state *state); + +/* xfs_dir2_node.c */ +extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args, + struct xfs_dabuf *lbp); +extern xfs_dahash_t xfs_dir2_leafn_lasthash(struct xfs_dabuf *bp, int *count); +extern int xfs_dir2_leafn_lookup_int(struct xfs_dabuf *bp, + struct xfs_da_args *args, int *indexp, + struct xfs_da_state *state); +extern int xfs_dir2_leafn_order(struct xfs_dabuf *leaf1_bp, + struct xfs_dabuf *leaf2_bp); +extern int xfs_dir2_leafn_split(struct xfs_da_state *state, + struct xfs_da_state_blk *oldblk, struct xfs_da_state_blk *newblk); +extern int xfs_dir2_leafn_toosmall(struct xfs_da_state *state, int *action); +extern void xfs_dir2_leafn_unbalance(struct xfs_da_state *state, + struct xfs_da_state_blk *drop_blk, + struct xfs_da_state_blk *save_blk); +extern int xfs_dir2_node_addname(struct xfs_da_args *args); +extern int xfs_dir2_node_lookup(struct xfs_da_args *args); +extern int xfs_dir2_node_removename(struct xfs_da_args *args); +extern int xfs_dir2_node_replace(struct xfs_da_args *args); +extern int xfs_dir2_node_trim_free(struct xfs_da_args *args, xfs_fileoff_t fo, + int *rvalp); + +/* xfs_dir2_sf.c */ +extern xfs_ino_t xfs_dir2_sf_get_parent_ino(struct xfs_dir2_sf_hdr *sfp); +extern xfs_ino_t xfs_dir2_sfe_get_ino(struct xfs_dir2_sf_hdr *sfp, + struct xfs_dir2_sf_entry *sfep); +extern int xfs_dir2_block_sfsize(struct xfs_inode *dp, + struct xfs_dir2_data_hdr *block, struct xfs_dir2_sf_hdr *sfhp); +extern int xfs_dir2_block_to_sf(struct xfs_da_args *args, struct xfs_dabuf *bp, + int size, xfs_dir2_sf_hdr_t *sfhp); +extern int xfs_dir2_sf_addname(struct xfs_da_args *args); +extern int xfs_dir2_sf_create(struct xfs_da_args *args, xfs_ino_t pino); +extern int xfs_dir2_sf_getdents(struct xfs_inode *dp, void *dirent, + xfs_off_t *offset, filldir_t filldir); +extern int xfs_dir2_sf_lookup(struct xfs_da_args *args); +extern int xfs_dir2_sf_removename(struct xfs_da_args *args); +extern int xfs_dir2_sf_replace(struct xfs_da_args *args); + +#endif /* __XFS_DIR2_PRIV_H__ */ diff --git a/fs/xfs/xfs_dir2_sf.c b/fs/xfs/xfs_dir2_sf.c index 9d3dff2ae4c5..79d05e84e296 100644 --- a/fs/xfs/xfs_dir2_sf.c +++ b/fs/xfs/xfs_dir2_sf.c @@ -23,18 +23,16 @@ #include "xfs_trans.h" #include "xfs_sb.h" #include "xfs_ag.h" -#include "xfs_dir2.h" #include "xfs_mount.h" #include "xfs_da_btree.h" #include "xfs_bmap_btree.h" -#include "xfs_dir2_sf.h" #include "xfs_dinode.h" #include "xfs_inode.h" #include "xfs_inode_item.h" #include "xfs_error.h" -#include "xfs_dir2_data.h" -#include "xfs_dir2_leaf.h" -#include "xfs_dir2_block.h" +#include "xfs_dir2.h" +#include "xfs_dir2_format.h" +#include "xfs_dir2_priv.h" #include "xfs_trace.h" /* diff --git a/fs/xfs/xfs_dir2_sf.h b/fs/xfs/xfs_dir2_sf.h deleted file mode 100644 index 26f062912395..000000000000 --- a/fs/xfs/xfs_dir2_sf.h +++ /dev/null @@ -1,151 +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_DIR2_SF_H__ -#define __XFS_DIR2_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. They consist of a single xfs_dir2_sf_hdr header - * followed by zero or more xfs_dir2_sf_entry structures. Due the different - * inode number storage size and the variable length name field in - * the xfs_dir2_sf_entry all these structure are variable length, and the - * accessors in this file should be used to iterate over them. - */ - -struct uio; -struct xfs_dabuf; -struct xfs_da_args; -struct xfs_dir2_data_hdr; -struct xfs_inode; -struct xfs_mount; -struct xfs_trans; - -/* - * Inode number stored as 8 8-bit values. - */ -typedef struct { __uint8_t i[8]; } xfs_dir2_ino8_t; - -/* - * Inode number stored as 4 8-bit values. - * Works a lot of the time, when all the inode numbers in a directory - * fit in 32 bits. - */ -typedef struct { __uint8_t i[4]; } xfs_dir2_ino4_t; - -typedef union { - xfs_dir2_ino8_t i8; - xfs_dir2_ino4_t i4; -} xfs_dir2_inou_t; -#define XFS_DIR2_MAX_SHORT_INUM ((xfs_ino_t)0xffffffffULL) - -/* - * Normalized offset (in a data block) of the entry, really xfs_dir2_data_off_t. - * Only need 16 bits, this is the byte offset into the single block form. - */ -typedef struct { __uint8_t i[2]; } __arch_pack xfs_dir2_sf_off_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 tightly as possible, and thus may - * be misaligned. Care needs to be taken to access them through special - * helpers or copy them into aligned variables first. - */ -typedef struct xfs_dir2_sf_hdr { - __uint8_t count; /* count of entries */ - __uint8_t i8count; /* count of 8-byte inode #s */ - xfs_dir2_inou_t parent; /* parent dir inode number */ -} __arch_pack xfs_dir2_sf_hdr_t; - -typedef struct xfs_dir2_sf_entry { - __u8 namelen; /* actual name length */ - xfs_dir2_sf_off_t offset; /* saved offset */ - __u8 name[]; /* name, variable size */ - /* - * A xfs_dir2_ino8_t or xfs_dir2_ino4_t follows here, at a - * variable offset after the name. - */ -} __arch_pack xfs_dir2_sf_entry_t; - -static inline int xfs_dir2_sf_hdr_size(int i8count) -{ - return ((uint)sizeof(xfs_dir2_sf_hdr_t) - \ - ((i8count) == 0) * \ - ((uint)sizeof(xfs_dir2_ino8_t) - (uint)sizeof(xfs_dir2_ino4_t))); -} - -static inline xfs_dir2_data_aoff_t -xfs_dir2_sf_get_offset(xfs_dir2_sf_entry_t *sfep) -{ - return get_unaligned_be16(&sfep->offset.i); -} - -static inline void -xfs_dir2_sf_put_offset(xfs_dir2_sf_entry_t *sfep, xfs_dir2_data_aoff_t off) -{ - put_unaligned_be16(off, &sfep->offset.i); -} - -static inline int -xfs_dir2_sf_entsize(struct xfs_dir2_sf_hdr *hdr, int len) -{ - return sizeof(struct xfs_dir2_sf_entry) + /* namelen + offset */ - len + /* name */ - (hdr->i8count ? /* ino */ - sizeof(xfs_dir2_ino8_t) : - sizeof(xfs_dir2_ino4_t)); -} - -static inline struct xfs_dir2_sf_entry * -xfs_dir2_sf_firstentry(struct xfs_dir2_sf_hdr *hdr) -{ - return (struct xfs_dir2_sf_entry *) - ((char *)hdr + xfs_dir2_sf_hdr_size(hdr->i8count)); -} - -static inline struct xfs_dir2_sf_entry * -xfs_dir2_sf_nextentry(struct xfs_dir2_sf_hdr *hdr, - struct xfs_dir2_sf_entry *sfep) -{ - return (struct xfs_dir2_sf_entry *) - ((char *)sfep + xfs_dir2_sf_entsize(hdr, sfep->namelen)); -} - -/* - * Functions. - */ -extern xfs_ino_t xfs_dir2_sf_get_parent_ino(struct xfs_dir2_sf_hdr *sfp); -extern xfs_ino_t xfs_dir2_sfe_get_ino(struct xfs_dir2_sf_hdr *sfp, - struct xfs_dir2_sf_entry *sfep); -extern int xfs_dir2_block_sfsize(struct xfs_inode *dp, - struct xfs_dir2_data_hdr *block, - xfs_dir2_sf_hdr_t *sfhp); -extern int xfs_dir2_block_to_sf(struct xfs_da_args *args, struct xfs_dabuf *bp, - int size, xfs_dir2_sf_hdr_t *sfhp); -extern int xfs_dir2_sf_addname(struct xfs_da_args *args); -extern int xfs_dir2_sf_create(struct xfs_da_args *args, xfs_ino_t pino); -extern int xfs_dir2_sf_getdents(struct xfs_inode *dp, void *dirent, - xfs_off_t *offset, filldir_t filldir); -extern int xfs_dir2_sf_lookup(struct xfs_da_args *args); -extern int xfs_dir2_sf_removename(struct xfs_da_args *args); -extern int xfs_dir2_sf_replace(struct xfs_da_args *args); - -#endif /* __XFS_DIR2_SF_H__ */ |