2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1991, 1993, 1994
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8 * modification, are permitted provided that the following conditions
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31 * @(#)ufs_extern.h 8.10 (Berkeley) 5/14/95
35 #ifndef _UFS_UFS_EXTERN_H_
36 #define _UFS_UFS_EXTERN_H_
50 struct vop_cachedlookup_args;
51 struct vop_generic_args;
52 struct vop_inactive_args;
53 struct vop_reclaim_args;
55 extern struct vop_vector ufs_fifoops;
56 extern struct vop_vector ufs_vnodeops;
58 int ufs_bmap(struct vop_bmap_args *);
59 int ufs_bmaparray(struct vnode *, ufs2_daddr_t, ufs2_daddr_t *,
60 struct buf *, int *, int *);
61 int ufs_bmap_seekdata(struct vnode *, off_t *);
62 int ufs_fhtovp(struct mount *, struct ufid *, int, struct vnode **);
63 int ufs_checkpath(ino_t, ino_t, struct inode *, struct ucred *, ino_t *);
64 void ufs_dirbad(struct inode *, doff_t, char *);
65 int ufs_dirbadentry(struct vnode *, struct direct *, int);
66 int ufs_dirempty(struct inode *, ino_t, struct ucred *);
67 int ufs_extread(struct vop_read_args *);
68 int ufs_extwrite(struct vop_write_args *);
69 void ufs_makedirentry(struct inode *, struct componentname *,
71 int ufs_direnter(struct vnode *, struct vnode *, struct direct *,
72 struct componentname *, struct buf *, int);
73 int ufs_dirremove(struct vnode *, struct inode *, int, int);
74 int ufs_dirrewrite(struct inode *, struct inode *, ino_t, int, int);
75 int ufs_lookup_ino(struct vnode *, struct vnode **, struct componentname *,
77 int ufs_getlbns(struct vnode *, ufs2_daddr_t, struct indir *, int *);
78 int ufs_inactive(struct vop_inactive_args *);
79 int ufs_init(struct vfsconf *);
80 void ufs_itimes(struct vnode *vp);
81 int ufs_lookup(struct vop_cachedlookup_args *);
82 int ufs_need_inactive(struct vop_need_inactive_args *);
83 int ufs_readdir(struct vop_readdir_args *);
84 int ufs_reclaim(struct vop_reclaim_args *);
85 void ffs_snapgone(struct inode *);
87 int ufs_uninit(struct vfsconf *);
88 int ufs_vinit(struct mount *, struct vop_vector *, struct vnode **);
90 #include <sys/sysctl.h>
91 SYSCTL_DECL(_vfs_ufs);
94 * Soft update function prototypes.
96 int softdep_setup_directory_add(struct buf *, struct inode *, off_t,
97 ino_t, struct buf *, int);
98 void softdep_change_directoryentry_offset(struct buf *, struct inode *,
99 caddr_t, caddr_t, caddr_t, int);
100 void softdep_setup_remove(struct buf *,struct inode *, struct inode *, int);
101 void softdep_setup_directory_change(struct buf *, struct inode *,
102 struct inode *, ino_t, int);
103 void softdep_change_linkcnt(struct inode *);
104 int softdep_slowdown(struct vnode *);
105 void softdep_setup_create(struct inode *, struct inode *);
106 void softdep_setup_dotdot_link(struct inode *, struct inode *);
107 void softdep_setup_link(struct inode *, struct inode *);
108 void softdep_setup_mkdir(struct inode *, struct inode *);
109 void softdep_setup_rmdir(struct inode *, struct inode *);
110 void softdep_setup_unlink(struct inode *, struct inode *);
111 void softdep_revert_create(struct inode *, struct inode *);
112 void softdep_revert_link(struct inode *, struct inode *);
113 void softdep_revert_mkdir(struct inode *, struct inode *);
114 void softdep_revert_rmdir(struct inode *, struct inode *);
117 * Flags to low-level allocation routines. The low 16-bits are reserved
118 * for IO_ flags from vnode.h.
120 * Note: The general vfs code typically limits the sequential heuristic
121 * count to 127. See sequential_heuristic() in kern/vfs_vnops.c
123 * The BA_CLRBUF flag specifies that the existing content of the block
124 * will not be completely overwritten by the caller, so buffers for new
125 * blocks must be cleared and buffers for existing blocks must be read.
126 * When BA_CLRBUF is not set the buffer will be completely overwritten
127 * and there is no reason to clear them or to spend I/O fetching existing
128 * data. The BA_CLRBUF flag is handled in the UFS_BALLOC() functions.
130 #define BA_CLRBUF 0x00010000 /* Clear invalid areas of buffer. */
131 #define BA_METAONLY 0x00020000 /* Return indirect block buffer. */
132 #define BA_UNMAPPED 0x00040000 /* Do not mmap resulted buffer. */
133 #define BA_SEQMASK 0x7F000000 /* Bits holding seq heuristic. */
134 #define BA_SEQSHIFT 24
135 #define BA_SEQMAX 0x7F
137 #endif /* !_UFS_UFS_EXTERN_H_ */