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ffs_extern.h revision 1.56
      1 /*	$NetBSD: ffs_extern.h,v 1.56 2007/06/07 05:34:48 yamt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1991, 1993, 1994
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  *
     31  *	@(#)ffs_extern.h	8.6 (Berkeley) 3/30/95
     32  */
     33 
     34 #ifndef _UFS_FFS_FFS_EXTERN_H_
     35 #define _UFS_FFS_FFS_EXTERN_H_
     36 
     37 /*
     38  * Sysctl values for the fast filesystem.
     39  */
     40 #define FFS_CLUSTERREAD		1	/* cluster reading enabled */
     41 #define FFS_CLUSTERWRITE	2	/* cluster writing enabled */
     42 #define FFS_REALLOCBLKS		3	/* block reallocation enabled */
     43 #define FFS_ASYNCFREE		4	/* asynchronous block freeing enabled */
     44 #define FFS_LOG_CHANGEOPT	5	/* log optimalization strategy change */
     45 #define FFS_MAXID		6	/* number of valid ffs ids */
     46 
     47 struct buf;
     48 struct fid;
     49 struct fs;
     50 struct inode;
     51 struct ufs1_dinode;
     52 struct ufs2_dinode;
     53 struct mount;
     54 struct nameidata;
     55 struct lwp;
     56 struct statvfs;
     57 struct timeval;
     58 struct timespec;
     59 struct ufsmount;
     60 struct uio;
     61 struct vnode;
     62 struct mbuf;
     63 struct cg;
     64 
     65 #if defined(_KERNEL)
     66 
     67 #define	FFS_ITIMES(ip, acc, mod, cre) \
     68 	while ((ip)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY)) \
     69 		ffs_itimes(ip, acc, mod, cre)
     70 
     71 extern struct pool ffs_inode_pool;	/* memory pool for inodes */
     72 extern struct pool ffs_dinode1_pool;	/* memory pool for UFS1 dinodes */
     73 extern struct pool ffs_dinode2_pool;	/* memory pool for UFS2 dinodes */
     74 
     75 #endif /* defined(_KERNEL) */
     76 
     77 __BEGIN_DECLS
     78 
     79 #if defined(_KERNEL)
     80 
     81 /* ffs_alloc.c */
     82 int	ffs_alloc(struct inode *, daddr_t, daddr_t , int, kauth_cred_t,
     83 		  daddr_t *);
     84 int	ffs_realloccg(struct inode *, daddr_t, daddr_t, int, int ,
     85 		      kauth_cred_t, struct buf **, daddr_t *);
     86 #if 0
     87 int	ffs_reallocblks(void *);
     88 #endif
     89 int	ffs_valloc(struct vnode *, int, kauth_cred_t, struct vnode **);
     90 daddr_t	ffs_blkpref_ufs1(struct inode *, daddr_t, int, int32_t *);
     91 daddr_t	ffs_blkpref_ufs2(struct inode *, daddr_t, int, int64_t *);
     92 void	ffs_blkfree(struct fs *, struct vnode *, daddr_t, long, ino_t);
     93 int	ffs_vfree(struct vnode *, ino_t, int);
     94 void	ffs_clusteracct(struct fs *, struct cg *, int32_t, int);
     95 int	ffs_checkfreefile(struct fs *, struct vnode *, ino_t);
     96 
     97 /* ffs_balloc.c */
     98 int	ffs_balloc(struct vnode *, off_t, int, kauth_cred_t, int,
     99     struct buf **);
    100 
    101 /* ffs_inode.c */
    102 int	ffs_update(struct vnode *, const struct timespec *,
    103     const struct timespec *, int);
    104 int	ffs_truncate(struct vnode *, off_t, int, kauth_cred_t, struct lwp *);
    105 
    106 /* ffs_vfsops.c */
    107 void	ffs_init(void);
    108 void	ffs_reinit(void);
    109 void	ffs_done(void);
    110 int	ffs_mountroot(void);
    111 int	ffs_mount(struct mount *, const char *, void *, struct nameidata *,
    112 		  struct lwp *);
    113 int	ffs_reload(struct mount *, kauth_cred_t, struct lwp *);
    114 int	ffs_mountfs(struct vnode *, struct mount *, struct lwp *);
    115 int	ffs_unmount(struct mount *, int, struct lwp *);
    116 int	ffs_flushfiles(struct mount *, int, struct lwp *);
    117 int	ffs_statvfs(struct mount *, struct statvfs *, struct lwp *);
    118 int	ffs_sync(struct mount *, int, kauth_cred_t, struct lwp *);
    119 int	ffs_vget(struct mount *, ino_t, struct vnode **);
    120 int	ffs_fhtovp(struct mount *, struct fid *, struct vnode **);
    121 int	ffs_vptofh(struct vnode *, struct fid *, size_t *);
    122 int	ffs_extattrctl(struct mount *, int, struct vnode *, int,
    123 		       const char *, struct lwp *);
    124 int	ffs_suspendctl(struct mount *, int);
    125 int	ffs_sbupdate(struct ufsmount *, int);
    126 int	ffs_cgupdate(struct ufsmount *, int);
    127 
    128 /* ffs_vnops.c */
    129 int	ffs_read(void *);
    130 int	ffs_write(void *);
    131 int	ffs_fsync(void *);
    132 int	ffs_reclaim(void *);
    133 int	ffs_getpages(void *);
    134 void	ffs_gop_size(struct vnode *, off_t, off_t *, int);
    135 int	ffs_openextattr(void *);
    136 int	ffs_closeextattr(void *);
    137 int	ffs_getextattr(void *);
    138 int	ffs_setextattr(void *);
    139 int	ffs_listextattr(void *);
    140 int	ffs_deleteextattr(void *);
    141 
    142 #ifdef SYSCTL_SETUP_PROTO
    143 SYSCTL_SETUP_PROTO(sysctl_vfs_ffs_setup);
    144 #endif /* SYSCTL_SETUP_PROTO */
    145 
    146 /*
    147  * Snapshot function prototypes.
    148  */
    149 int	ffs_snapblkfree(struct fs *, struct vnode *, daddr_t, long, ino_t);
    150 void	ffs_snapremove(struct vnode *);
    151 int	ffs_snapshot(struct mount *, struct vnode *, struct timespec *);
    152 void	ffs_snapshot_mount(struct mount *);
    153 void	ffs_snapshot_unmount(struct mount *);
    154 void	ffs_snapgone(struct inode *);
    155 
    156 /*
    157  * Soft dependency function prototypes.
    158  */
    159 void	softdep_initialize(void);
    160 void	softdep_reinitialize(void);
    161 int	softdep_mount(struct vnode *, struct mount *, struct fs *,
    162 		      kauth_cred_t);
    163 int	softdep_flushworklist(struct mount *, int *, struct lwp *);
    164 int	softdep_flushfiles(struct mount *, int, struct lwp *);
    165 void	softdep_update_inodeblock(struct inode *, struct buf *, int);
    166 void	softdep_load_inodeblock(struct inode *);
    167 void	softdep_freefile(struct vnode *, ino_t, int);
    168 void	softdep_setup_freeblocks(struct inode *, off_t, int);
    169 void	softdep_setup_inomapdep(struct buf *, struct inode *, ino_t);
    170 void	softdep_setup_blkmapdep(struct buf *, struct fs *, daddr_t);
    171 void	softdep_setup_allocdirect(struct inode *, daddr_t, daddr_t,
    172 				  daddr_t, long, long, struct buf *);
    173 void	softdep_setup_allocindir_meta(struct buf *, struct inode *,
    174 				      struct buf *, int, daddr_t);
    175 void	softdep_setup_allocindir_page(struct inode *, daddr_t,
    176 				      struct buf *, int, daddr_t, daddr_t,
    177 				      struct buf *);
    178 void	softdep_fsync_mountdev(struct vnode *);
    179 int	softdep_sync_metadata(void *);
    180 
    181 extern int (**ffs_vnodeop_p)(void *);
    182 extern int (**ffs_specop_p)(void *);
    183 extern int (**ffs_fifoop_p)(void *);
    184 
    185 #endif /* defined(_KERNEL) */
    186 
    187 /* ffs_appleufs.c */
    188 struct appleufslabel;
    189 u_int16_t ffs_appleufs_cksum(const struct appleufslabel *);
    190 int	ffs_appleufs_validate(const char*, const struct appleufslabel *,
    191 			      struct appleufslabel *);
    192 void	ffs_appleufs_set(struct appleufslabel *, const char *, time_t,
    193 			 uint64_t);
    194 
    195 /* ffs_bswap.c */
    196 void	ffs_sb_swap(struct fs*, struct fs *);
    197 void	ffs_dinode1_swap(struct ufs1_dinode *, struct ufs1_dinode *);
    198 void	ffs_dinode2_swap(struct ufs2_dinode *, struct ufs2_dinode *);
    199 struct csum;
    200 void	ffs_csum_swap(struct csum *, struct csum *, int);
    201 struct csum_total;
    202 void	ffs_csumtotal_swap(struct csum_total *, struct csum_total *);
    203 void	ffs_cg_swap(struct cg *, struct cg *, struct fs *);
    204 
    205 /* ffs_subr.c */
    206 void	ffs_load_inode(struct buf *, struct inode *, struct fs *, ino_t);
    207 int	ffs_freefile(struct fs *, struct vnode *, ino_t, int);
    208 void	ffs_fragacct(struct fs *, int, int32_t[], int, int);
    209 int	ffs_isblock(struct fs *, u_char *, int32_t);
    210 int	ffs_isfreeblock(struct fs *, u_char *, int32_t);
    211 void	ffs_clrblock(struct fs *, u_char *, int32_t);
    212 void	ffs_setblock(struct fs *, u_char *, int32_t);
    213 void	ffs_itimes(struct inode *, const struct timespec *,
    214     const struct timespec *, const struct timespec *);
    215 
    216 __END_DECLS
    217 
    218 #endif /* !_UFS_FFS_FFS_EXTERN_H_ */
    219