xref: /freebsd/sys/fs/ext2fs/ext2_extern.h (revision a2aef24aa3c8458e4036735dd6928b4ef77294e5)
1 /*-
2  *  modified for EXT2FS support in Lites 1.1
3  *
4  *  Aug 1995, Godmar Back (gback@cs.utah.edu)
5  *  University of Utah, Department of Computer Science
6  */
7 /*-
8  * Copyright (c) 1991, 1993, 1994
9  *	The Regents of the University of California.  All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  * 3. Neither the name of the University nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  *
35  *	@(#)ffs_extern.h	8.3 (Berkeley) 4/16/94
36  * $FreeBSD$
37  */
38 
39 #ifndef _FS_EXT2FS_EXT2_EXTERN_H_
40 #define	_FS_EXT2FS_EXT2_EXTERN_H_
41 
42 struct ext2fs_dinode;
43 struct ext2fs_direct_2;
44 struct ext2fs_searchslot;
45 struct indir;
46 struct inode;
47 struct mount;
48 struct vfsconf;
49 struct vnode;
50 
51 int	ext2_add_entry(struct vnode *, struct ext2fs_direct_2 *);
52 int	ext2_alloc(struct inode *, daddr_t, e4fs_daddr_t, int,
53 	    struct ucred *, e4fs_daddr_t *);
54 e4fs_daddr_t ext2_alloc_meta(struct inode *ip);
55 int	ext2_balloc(struct inode *,
56 	    e2fs_lbn_t, int, struct ucred *, struct buf **, int);
57 int	ext2_blkatoff(struct vnode *, off_t, char **, struct buf **);
58 void	ext2_blkfree(struct inode *,  e4fs_daddr_t, long);
59 e4fs_daddr_t	ext2_blkpref(struct inode *, e2fs_lbn_t, int, e2fs_daddr_t *,
60 	    e2fs_daddr_t);
61 int	ext2_bmap(struct vop_bmap_args *);
62 int	ext2_bmaparray(struct vnode *, daddr_t, daddr_t *, int *, int *);
63 int	ext4_bmapext(struct vnode *, int32_t, int64_t *, int *, int *);
64 void	ext2_clusteracct(struct m_ext2fs *, char *, int, e4fs_daddr_t, int);
65 void	ext2_dirbad(struct inode *ip, doff_t offset, char *how);
66 void	ext2_fserr(struct m_ext2fs *, uid_t, char *);
67 void	ext2_ei2i(struct ext2fs_dinode *, struct inode *);
68 int	ext2_getlbns(struct vnode *, daddr_t, struct indir *, int *);
69 int	ext2_i2ei(struct inode *, struct ext2fs_dinode *);
70 void	ext2_itimes(struct vnode *vp);
71 int	ext2_reallocblks(struct vop_reallocblks_args *);
72 int	ext2_reclaim(struct vop_reclaim_args *);
73 int	ext2_truncate(struct vnode *, off_t, int, struct ucred *, struct thread *);
74 int	ext2_update(struct vnode *, int);
75 int	ext2_valloc(struct vnode *, int, struct ucred *, struct vnode **);
76 int	ext2_vfree(struct vnode *, ino_t, int);
77 int	ext2_vinit(struct mount *, struct vop_vector *, struct vnode **vpp);
78 int	ext2_lookup(struct vop_cachedlookup_args *);
79 int	ext2_readdir(struct vop_readdir_args *);
80 #ifdef EXT2FS_DEBUG
81 void	ext2_print_inode(struct inode *);
82 #endif
83 int	ext2_direnter(struct inode *,
84 		struct vnode *, struct componentname *);
85 int	ext2_dirremove(struct vnode *, struct componentname *);
86 int	ext2_dirrewrite(struct inode *,
87 		struct inode *, struct componentname *);
88 int	ext2_dirempty(struct inode *, ino_t, struct ucred *);
89 int	ext2_checkpath(struct inode *, struct inode *, struct ucred *);
90 int	ext2_cg_has_sb(struct m_ext2fs *fs, int cg);
91 int	ext2_inactive(struct vop_inactive_args *);
92 int	ext2_htree_add_entry(struct vnode *, struct ext2fs_direct_2 *,
93 	    struct componentname *);
94 int	ext2_htree_create_index(struct vnode *, struct componentname *,
95 	    struct ext2fs_direct_2 *);
96 int	ext2_htree_has_idx(struct inode *);
97 int	ext2_htree_hash(const char *, int, uint32_t *, int, uint32_t *,
98 	    uint32_t *);
99 int	ext2_htree_lookup(struct inode *, const char *, int, struct buf **,
100 	    int *, doff_t *, doff_t *, doff_t *, struct ext2fs_searchslot *);
101 int	ext2_search_dirblock(struct inode *, void *, int *, const char *, int,
102 	    int *, doff_t *, doff_t *, doff_t *, struct ext2fs_searchslot *);
103 int	ext2_gd_csum_verify(struct m_ext2fs *fs, struct cdev *dev);
104 void	ext2_gd_csum_set(struct m_ext2fs *fs);
105 
106 
107 /* Flags to low-level allocation routines.
108  * The low 16-bits are reserved for IO_ flags from vnode.h.
109  */
110 #define	BA_CLRBUF	0x00010000	/* Clear invalid areas of buffer. */
111 #define	BA_SEQMASK	0x7F000000	/* Bits holding seq heuristic. */
112 #define	BA_SEQSHIFT	24
113 #define	BA_SEQMAX	0x7F
114 
115 extern struct vop_vector ext2_vnodeops;
116 extern struct vop_vector ext2_fifoops;
117 
118 #endif	/* !_FS_EXT2FS_EXT2_EXTERN_H_ */
119