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ffs_extern.h

/*    $OpenBSD: ffs_extern.h,v 1.24 2004/07/13 21:04:29 millert Exp $   */
/*    $NetBSD: ffs_extern.h,v 1.4 1996/02/09 22:22:22 christos Exp $    */

/*-
 * Copyright (c) 1991, 1993, 1994
 *    The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *    @(#)ffs_extern.h  8.3 (Berkeley) 4/16/94
 */

#define FFS_CLUSTERREAD       1     /* cluster reading enabled */
#define FFS_CLUSTERWRITE      2     /* cluster writing enabled */
#define FFS_REALLOCBLKS       3     /* block reallocation enabled */
#define FFS_ASYNCFREE         4     /* asynchronous block freeing enabled */
#define     FFS_MAX_SOFTDEPS  5     /* maximum structs before slowdown */
#define     FFS_SD_TICKDELAY  6     /* ticks to pause during slowdown */
#define     FFS_SD_WORKLIST_PUSH    7     /* # of worklist cleanups */
#define     FFS_SD_BLK_LIMIT_PUSH   8     /* # of times block limit neared */
#define     FFS_SD_INO_LIMIT_PUSH   9     /* # of times inode limit neared */
#define     FFS_SD_BLK_LIMIT_HIT    10    /* # of times block slowdown imposed */
#define     FFS_SD_INO_LIMIT_HIT    11    /* # of times inode slowdown imposed */
#define     FFS_SD_SYNC_LIMIT_HIT   12    /* # of synchronous slowdowns imposed */
#define     FFS_SD_INDIR_BLK_PTRS   13    /* bufs redirtied as indir ptrs not written */
#define     FFS_SD_INODE_BITMAP     14    /* bufs redirtied as inode bitmap not written */
#define     FFS_SD_DIRECT_BLK_PTRS  15    /* bufs redirtied as direct ptrs not written */
#define     FFS_SD_DIR_ENTRY  16    /* bufs redirtied as dir entry cannot write */
#define     FFS_DIRHASH_DIRSIZE     17    /* min directory size, in bytes */
#define     FFS_DIRHASH_MAXMEM      18    /* max kvm to use, in bytes */
#define     FFS_DIRHASH_MEM         19    /* current mem usage, in bytes */
#define     FFS_MAXID         20    /* number of valid ffs ids */

#define FFS_NAMES { \
      { 0, 0 }, \
      { "doclusterread", CTLTYPE_INT }, \
      { "doclusterwrite", CTLTYPE_INT }, \
      { "doreallocblks", CTLTYPE_INT }, \
      { "doasyncfree", CTLTYPE_INT }, \
      { "max_softdeps", CTLTYPE_INT }, \
      { "sd_tickdelay", CTLTYPE_INT }, \
      { "sd_worklist_push", CTLTYPE_INT }, \
      { "sd_blk_limit_push", CTLTYPE_INT }, \
      { "sd_ino_limit_push", CTLTYPE_INT }, \
      { "sd_blk_limit_hit", CTLTYPE_INT }, \
      { "sd_ino_limit_hit", CTLTYPE_INT }, \
      { "sd_sync_limit_hit", CTLTYPE_INT }, \
      { "sd_indir_blk_ptrs", CTLTYPE_INT }, \
      { "sd_inode_bitmap", CTLTYPE_INT }, \
      { "sd_direct_blk_ptrs", CTLTYPE_INT }, \
      { "sd_dir_entry", CTLTYPE_INT }, \
      { "dirhash_dirsize", CTLTYPE_INT }, \
      { "dirhash_maxmem", CTLTYPE_INT }, \
      { "dirhash_mem", CTLTYPE_INT }, \
}


struct buf;
struct fid;
struct fs;
struct inode;
struct mount;
struct nameidata;
struct proc;
struct statfs;
struct timeval;
struct ucred;
struct ufsmount;
struct vfsconf;
struct uio;
struct vnode;
struct mbuf;
struct cg;
struct vop_vfree_args;

__BEGIN_DECLS

/* ffs_alloc.c */
int ffs_alloc(struct inode *, daddr_t, daddr_t , int, struct ucred *,
               daddr_t *);
int ffs_realloccg(struct inode *, daddr_t, daddr_t, int, int ,
                   struct ucred *, struct buf **, daddr_t *);
int ffs_reallocblks(void *);
int ffs_inode_alloc(struct inode *, mode_t, struct ucred *, struct vnode **);
int ffs_inode_free(struct inode *, ino_t, mode_t);
int ffs_freefile(struct inode *, ino_t, mode_t);

daddr_t ffs_blkpref(struct inode *, daddr_t, int, daddr_t *);
void ffs_blkfree(struct inode *, daddr_t, long);
void ffs_clusteracct(struct fs *, struct cg *, daddr_t, int);

/* ffs_balloc.c */
int ffs_balloc(struct inode *, off_t, int, struct ucred *, int, struct buf **);

/* ffs_inode.c */
int ffs_init(struct vfsconf *);
int ffs_update(struct inode *, struct timespec *, struct timespec *, int);
int ffs_truncate(struct inode *, off_t, int, struct ucred *);

/* ffs_subr.c */
int ffs_bufatoff(struct inode *, off_t, char **, struct buf **);
void ffs_fragacct(struct fs *, int, int32_t[], int);
#ifdef DIAGNOSTIC
void  ffs_checkoverlap(struct buf *, struct inode *);
#endif
int   ffs_isfreeblock(struct fs *, unsigned char *, daddr_t);
int ffs_isblock(struct fs *, unsigned char *, daddr_t);
void ffs_clrblock(struct fs *, u_char *, daddr_t);
void ffs_setblock(struct fs *, unsigned char *, daddr_t);

/* ffs_vfsops.c */
int ffs_mountroot(void);
int ffs_mount(struct mount *, const char *, void *, struct nameidata *,
               struct proc *);
int ffs_reload(struct mount *, struct ucred *, struct proc *);
int ffs_mountfs(struct vnode *, struct mount *, struct proc *);
int ffs_oldfscompat(struct fs *);
int ffs_unmount(struct mount *, int, struct proc *);
int ffs_flushfiles(struct mount *, int, struct proc *);
int ffs_statfs(struct mount *, struct statfs *, struct proc *);
int ffs_sync(struct mount *, int, struct ucred *, struct proc *);
int ffs_vget(struct mount *, ino_t, struct vnode **);
int ffs_fhtovp(struct mount *, struct fid *, struct vnode **);
int ffs_vptofh(struct vnode *, struct fid *);
int ffs_sysctl(int *, u_int, void *, size_t *, void *, size_t,
                struct proc *);
int ffs_sbupdate(struct ufsmount *, int);
int ffs_cgupdate(struct ufsmount *, int);

/* ffs_vnops.c */
int ffs_read(void *);
int ffs_write(void *);
int ffs_fsync(void *);
int ffs_reclaim(void *);
int ffsfifo_reclaim(void *);


/*
 * Soft dependency function prototypes.
 */

struct vop_vfree_args;
struct vop_fsync_args;

void  softdep_initialize(void);
int   softdep_process_worklist(struct mount *);
int   softdep_mount(struct vnode *, struct mount *, struct fs *,
          struct ucred *);
int   softdep_flushworklist(struct mount *, int *, struct proc *);
int   softdep_flushfiles(struct mount *, int, struct proc *);
void  softdep_update_inodeblock(struct inode *, struct buf *, int);
void  softdep_load_inodeblock(struct inode *);
void  softdep_freefile(struct vnode *, ino_t, mode_t);
void  softdep_setup_freeblocks(struct inode *, off_t);
void  softdep_setup_inomapdep(struct buf *, struct inode *, ino_t);
void  softdep_setup_blkmapdep(struct buf *, struct fs *, daddr_t);
void  softdep_setup_allocdirect(struct inode *, ufs_lbn_t, daddr_t,
            daddr_t, long, long, struct buf *);
void  softdep_setup_allocindir_meta(struct buf *, struct inode *,
            struct buf *, int, daddr_t);
void  softdep_setup_allocindir_page(struct inode *, ufs_lbn_t,
            struct buf *, int, daddr_t, daddr_t, struct buf *);
void  softdep_fsync_mountdev(struct vnode *);
int   softdep_sync_metadata(struct vop_fsync_args *);
int   softdep_fsync(struct vnode *vp);
__END_DECLS

extern int (**ffs_vnodeop_p)(void *);
extern int (**ffs_specop_p)(void *);
#ifdef FIFO
extern int (**ffs_fifoop_p)(void *);
#define FFS_FIFOOPS ffs_fifoop_p
#else
#define FFS_FIFOOPS NULL
#endif

extern struct pool ffs_ino_pool;

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