3767ed5b11
The lseek(SEEK_DATA) optimization logic could be simply borrowed from ufs side. See, https://reviews.freebsd.org/D19599. Reviewed by: pfg MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D23605
148 lines
6.8 KiB
C
148 lines
6.8 KiB
C
/*-
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* modified for EXT2FS support in Lites 1.1
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*
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* Aug 1995, Godmar Back (gback@cs.utah.edu)
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* University of Utah, Department of Computer Science
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*/
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/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1991, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ffs_extern.h 8.3 (Berkeley) 4/16/94
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* $FreeBSD$
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*/
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#ifndef _FS_EXT2FS_EXT2_EXTERN_H_
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#define _FS_EXT2FS_EXT2_EXTERN_H_
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struct ext2fs_dinode;
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struct ext2fs_direct_2;
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struct ext2fs_direct_tail;
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struct ext2fs_searchslot;
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struct indir;
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struct inode;
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struct mount;
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struct vfsconf;
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struct vnode;
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int ext2_add_entry(struct vnode *, struct ext2fs_direct_2 *);
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int ext2_alloc(struct inode *, daddr_t, e4fs_daddr_t, int,
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struct ucred *, e4fs_daddr_t *);
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e4fs_daddr_t ext2_alloc_meta(struct inode *ip);
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int ext2_balloc(struct inode *,
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e2fs_lbn_t, int, struct ucred *, struct buf **, int);
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int ext2_blkatoff(struct vnode *, off_t, char **, struct buf **);
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void ext2_blkfree(struct inode *, e4fs_daddr_t, long);
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e4fs_daddr_t ext2_blkpref(struct inode *, e2fs_lbn_t, int, e2fs_daddr_t *,
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e2fs_daddr_t);
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int ext2_bmap(struct vop_bmap_args *);
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int ext2_bmaparray(struct vnode *, daddr_t, daddr_t *, int *, int *);
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int ext4_bmapext(struct vnode *, int32_t, int64_t *, int *, int *);
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int ext2_bmap_seekdata(struct vnode *, off_t *);
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void ext2_clusteracct(struct m_ext2fs *, char *, int, e4fs_daddr_t, int);
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void ext2_dirbad(struct inode *ip, doff_t offset, char *how);
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int ext2_ei2i(struct ext2fs_dinode *, struct inode *);
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int ext2_getlbns(struct vnode *, daddr_t, struct indir *, int *);
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int ext2_i2ei(struct inode *, struct ext2fs_dinode *);
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void ext2_itimes(struct vnode *vp);
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int ext2_reallocblks(struct vop_reallocblks_args *);
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int ext2_reclaim(struct vop_reclaim_args *);
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int ext2_truncate(struct vnode *, off_t, int, struct ucred *, struct thread *);
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int ext2_update(struct vnode *, int);
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int ext2_valloc(struct vnode *, int, struct ucred *, struct vnode **);
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int ext2_vfree(struct vnode *, ino_t, int);
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int ext2_vinit(struct mount *, struct vop_vector *, struct vnode **vpp);
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int ext2_lookup(struct vop_cachedlookup_args *);
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int ext2_readdir(struct vop_readdir_args *);
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#ifdef EXT2FS_PRINT_EXTENTS
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void ext2_print_inode(struct inode *);
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#endif
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int ext2_direnter(struct inode *,
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struct vnode *, struct componentname *);
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int ext2_dirremove(struct vnode *, struct componentname *);
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int ext2_dirrewrite(struct inode *,
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struct inode *, struct componentname *);
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int ext2_dirempty(struct inode *, ino_t, struct ucred *);
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int ext2_checkpath(struct inode *, struct inode *, struct ucred *);
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int ext2_cg_has_sb(struct m_ext2fs *fs, int cg);
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uint64_t ext2_cg_number_gdb(struct m_ext2fs *fs, int cg);
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int ext2_inactive(struct vop_inactive_args *);
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int ext2_htree_add_entry(struct vnode *, struct ext2fs_direct_2 *,
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struct componentname *);
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int ext2_htree_create_index(struct vnode *, struct componentname *,
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struct ext2fs_direct_2 *);
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int ext2_htree_has_idx(struct inode *);
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int ext2_htree_hash(const char *, int, uint32_t *, int, uint32_t *,
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uint32_t *);
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int ext2_htree_lookup(struct inode *, const char *, int, struct buf **,
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int *, doff_t *, doff_t *, doff_t *, struct ext2fs_searchslot *);
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int ext2_search_dirblock(struct inode *, void *, int *, const char *, int,
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int *, doff_t *, doff_t *, doff_t *, struct ext2fs_searchslot *);
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uint32_t e2fs_gd_get_ndirs(struct ext2_gd *gd);
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uint64_t e2fs_gd_get_b_bitmap(struct ext2_gd *);
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uint64_t e2fs_gd_get_i_bitmap(struct ext2_gd *);
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uint64_t e2fs_gd_get_i_tables(struct ext2_gd *);
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void ext2_sb_csum_set_seed(struct m_ext2fs *);
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int ext2_sb_csum_verify(struct m_ext2fs *);
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void ext2_sb_csum_set(struct m_ext2fs *);
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int ext2_extattr_blk_csum_verify(struct inode *, struct buf *);
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void ext2_extattr_blk_csum_set(struct inode *, struct buf *);
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int ext2_dir_blk_csum_verify(struct inode *, struct buf *);
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struct ext2fs_direct_tail *ext2_dirent_get_tail(struct inode *ip,
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struct ext2fs_direct_2 *ep);
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void ext2_dirent_csum_set(struct inode *, struct ext2fs_direct_2 *);
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int ext2_dirent_csum_verify(struct inode *ip, struct ext2fs_direct_2 *ep);
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void ext2_dx_csum_set(struct inode *, struct ext2fs_direct_2 *);
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int ext2_dx_csum_verify(struct inode *ip, struct ext2fs_direct_2 *ep);
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int ext2_extent_blk_csum_verify(struct inode *, void *);
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void ext2_extent_blk_csum_set(struct inode *, void *);
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void ext2_init_dirent_tail(struct ext2fs_direct_tail *);
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int ext2_is_dirent_tail(struct inode *, struct ext2fs_direct_2 *);
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int ext2_gd_i_bitmap_csum_verify(struct m_ext2fs *, int, struct buf *);
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void ext2_gd_i_bitmap_csum_set(struct m_ext2fs *, int, struct buf *);
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int ext2_gd_b_bitmap_csum_verify(struct m_ext2fs *, int, struct buf *);
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void ext2_gd_b_bitmap_csum_set(struct m_ext2fs *, int, struct buf *);
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int ext2_ei_csum_verify(struct inode *, struct ext2fs_dinode *);
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void ext2_ei_csum_set(struct inode *, struct ext2fs_dinode *);
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int ext2_gd_csum_verify(struct m_ext2fs *, struct cdev *);
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void ext2_gd_csum_set(struct m_ext2fs *);
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/* Flags to low-level allocation routines.
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* The low 16-bits are reserved for IO_ flags from vnode.h.
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*/
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#define BA_CLRBUF 0x00010000 /* Clear invalid areas of buffer. */
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#define BA_SEQMASK 0x7F000000 /* Bits holding seq heuristic. */
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#define BA_SEQSHIFT 24
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#define BA_SEQMAX 0x7F
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extern struct vop_vector ext2_vnodeops;
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extern struct vop_vector ext2_fifoops;
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#endif /* !_FS_EXT2FS_EXT2_EXTERN_H_ */
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