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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/sys/fs/ext2fs/ext2_extern.h
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/*-

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 *  modified for EXT2FS support in Lites 1.1

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 *

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 *  Aug 1995, Godmar Back ([email protected])

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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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#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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 * The BA_CLRBUF flag specifies that the existing content of the block

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 * will not be completely overwritten by the caller, so buffers for new

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 * blocks must be cleared and buffers for existing blocks must be read.

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 * When BA_CLRBUF is not set the buffer will be completely overwritten

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 * and there is no reason to clear them or to spend I/O fetching existing

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 * data. The BA_CLRBUF flag is handled in the ext2_balloc() functions.

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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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