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NetBSD/sys/ufs/lfs/lfs_extern.h
perseant 437e855235 Changes to help the roll-forward agent, to wit: 
* Mark being-deleted files in the Ifile so we can finish deleting them
  at fs mount time.
* Flag the Ifile with "cleaner must clean" when writers are waiting for
  the cleaner, rather than relying solely on the cleaner's estimation of
  whether it should clean or not.
* Note partial segments written by a user agent (in particular,
  fsck_lfs) so that repeated rolls forward don't interfere with one
  another.
* Add a new fcntl, LFCNPASS, that allows the log to wrap exactly once,
  for better testing of the validity of checkpoints.
* Keep track of the on-disk nlink count when cleaning, so that we don't
  partially complete directory operations while cleaning.
* Ensure that every single Ifile inode write represents a consistent
  view of the filesystem.  In particular, the accounting for the segment
  we are writing the inode into must be correct, and the accounting for
  the segment that inode used to reside in must be correct.  Rather than
  just rewriting the inode if we wrote it wrong, rewrite the necessary
  ifile blocks before writing the inode so we never write it wrong.
* Don't unmark any VDIROP vnodes if we haven't written them to disk,
  avoiding yet another problem with the "wait for the cleaner" error
  return from lfs_putpages().

Also, move the last callback to an aiodone call, so we no longer do any
memory management from interrupt context.
2006-09-01 19:41:28 +00:00

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/* $NetBSD: lfs_extern.h,v 1.87 2006/09/01 19:41:28 perseant Exp $ */
/*-
* Copyright (c) 1999, 2000, 2001, 2002, 2003 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Konrad E. Schroder <perseant@hhhh.org>.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*-
* 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.
*
* @(#)lfs_extern.h 8.6 (Berkeley) 5/8/95
*/
#ifndef _UFS_LFS_LFS_EXTERN_H_
#define _UFS_LFS_LFS_EXTERN_H_
#ifdef _KERNEL
#include <sys/mallocvar.h>
MALLOC_DECLARE(M_SEGMENT);
#endif
/* Copied from ext2fs for ITIMES. XXX This is a bogus use of v_tag. */
#define IS_LFS_VNODE(vp) (vp->v_tag == VT_LFS)
/*
* Sysctl values for LFS.
*/
#define LFS_WRITEINDIR 1 /* flush indirect blocks on non-checkpoint writes */
#define LFS_CLEAN_VNHEAD 2 /* put prev unrefed cleaned vnodes on head of free list */
#define LFS_DOSTATS 3
#define LFS_MAXPAGES 4
#define LFS_FS_PAGETRIP 5
#define LFS_STATS 6
#define LFS_DO_RFW 7
#define LFS_DEBUGLOG 8
#define LFS_MAXID 9
struct fid;
struct mount;
struct nameidata;
struct proc;
struct statvfs;
struct timeval;
struct inode;
struct uio;
struct mbuf;
struct ufs1_dinode;
struct buf;
struct vnode;
struct dlfs;
struct lfs;
struct segment;
struct block_info;
#if defined(_KERNEL)
extern int lfs_allclean_wakeup;
extern struct pool lfs_inode_pool; /* memory pool for inodes */
extern struct pool lfs_dinode_pool; /* memory pool for dinodes */
extern struct pool lfs_inoext_pool; /* memory pool for inode extension */
extern struct pool lfs_lbnentry_pool; /* memory pool for balloc accounting */
extern int locked_queue_count;
extern long locked_queue_bytes;
extern int lfs_subsys_pages;
extern int lfs_dirvcount;
extern struct simplelock lfs_subsys_lock;
extern int lfs_debug_log_subsys[];
__BEGIN_DECLS
/* lfs_alloc.c */
void lfs_vcreate(struct mount *, ino_t, struct vnode *);
int lfs_valloc(struct vnode *, int, kauth_cred_t, struct vnode **);
int lfs_vfree(struct vnode *, ino_t, int);
void lfs_order_freelist(struct lfs *);
int lfs_extend_ifile(struct lfs *, kauth_cred_t);
int lfs_ialloc(struct lfs *, struct vnode *, ino_t, int, struct vnode **);
void lfs_orphan(struct lfs *, ino_t);
/* lfs_balloc.c */
int lfs_balloc(struct vnode *, off_t, int, kauth_cred_t, int, struct buf **);
void lfs_register_block(struct vnode *, daddr_t);
void lfs_deregister_block(struct vnode *, daddr_t);
void lfs_deregister_all(struct vnode *);
/* lfs_bio.c */
int lfs_availwait(struct lfs *, int);
int lfs_bwrite_ext(struct buf *, int);
int lfs_fits(struct lfs *, int);
void lfs_flush_fs(struct lfs *, int);
void lfs_flush(struct lfs *, int, int);
int lfs_check(struct vnode *, daddr_t, int);
void lfs_freebuf(struct lfs *, struct buf *);
struct buf *lfs_newbuf(struct lfs *, struct vnode *, daddr_t, size_t, int);
void lfs_countlocked(int *, long *, const char *);
int lfs_reserve(struct lfs *, struct vnode *, struct vnode *, int);
/* lfs_debug.c */
#ifdef DEBUG
int lfs_bwrite_log(struct buf *, const char *, int);
void lfs_dumplog(void);
void lfs_dump_super(struct lfs *);
void lfs_dump_dinode(struct ufs1_dinode *);
void lfs_check_bpp(struct lfs *, struct segment *, char *, int);
void lfs_check_segsum(struct lfs *, struct segment *, char *, int);
void lfs_debug_log(int, const char *, ...);
#endif /* DEBUG */
/* lfs_inode.c */
int lfs_update(struct vnode *, const struct timespec *, const struct timespec *,
int);
int lfs_truncate(struct vnode *, off_t, int, kauth_cred_t, struct lwp *);
struct ufs1_dinode *lfs_ifind(struct lfs *, ino_t, struct buf *);
void lfs_finalize_ino_seguse(struct lfs *, struct inode *);
void lfs_finalize_fs_seguse(struct lfs *);
/* lfs_rfw.c */
int lfs_rf_valloc(struct lfs *, ino_t, int, struct lwp *, struct vnode **);
void lfs_roll_forward(struct lfs *, struct mount *, struct lwp *);
/* lfs_segment.c */
void lfs_imtime(struct lfs *);
int lfs_vflush(struct vnode *);
int lfs_segwrite(struct mount *, int);
int lfs_writefile(struct lfs *, struct segment *, struct vnode *);
int lfs_writeinode(struct lfs *, struct segment *, struct inode *);
int lfs_gatherblock(struct segment *, struct buf *, int *);
int lfs_gather(struct lfs *, struct segment *, struct vnode *, int (*match )(struct lfs *, struct buf *));
void lfs_update_single(struct lfs *, struct segment *, struct vnode *,
daddr_t, int32_t, int);
void lfs_updatemeta(struct segment *);
int lfs_rewind(struct lfs *, int);
void lfs_unset_inval_all(struct lfs *);
int lfs_initseg(struct lfs *);
int lfs_writeseg(struct lfs *, struct segment *);
void lfs_writesuper(struct lfs *, daddr_t);
int lfs_match_data(struct lfs *, struct buf *);
int lfs_match_indir(struct lfs *, struct buf *);
int lfs_match_dindir(struct lfs *, struct buf *);
int lfs_match_tindir(struct lfs *, struct buf *);
void lfs_callback(struct buf *);
int lfs_vref(struct vnode *);
void lfs_vunref(struct vnode *);
void lfs_vunref_head(struct vnode *);
void lfs_acquire_finfo(struct lfs *fs, ino_t, int);
void lfs_release_finfo(struct lfs *fs);
/* lfs_subr.c */
void lfs_setup_resblks(struct lfs *);
void lfs_pad_check(unsigned char *, int, char *, int);
void lfs_free_resblks(struct lfs *);
void *lfs_malloc(struct lfs *, size_t, int);
void lfs_free(struct lfs *, void *, int);
int lfs_seglock(struct lfs *, unsigned long);
void lfs_segunlock(struct lfs *);
void lfs_segunlock_relock(struct lfs *);
int lfs_writer_enter(struct lfs *, const char *);
void lfs_writer_leave(struct lfs *);
void lfs_wakeup_cleaner(struct lfs *);
/* lfs_syscalls.c */
int lfs_fastvget(struct mount *, ino_t, daddr_t, struct vnode **, struct ufs1_dinode *);
struct buf *lfs_fakebuf(struct lfs *, struct vnode *, int, size_t, caddr_t);
int lfs_do_segclean(struct lfs *, unsigned long);
int lfs_segwait(fsid_t *, struct timeval *);
int lfs_bmapv(struct proc *, fsid_t *, struct block_info *, int);
int lfs_markv(struct proc *, fsid_t *, struct block_info *, int);
/* lfs_vfsops.c */
void lfs_init(void);
void lfs_reinit(void);
void lfs_done(void);
int lfs_mountroot(void);
int lfs_mount(struct mount *, const char *, void *, struct nameidata *, struct lwp *);
int lfs_unmount(struct mount *, int, struct lwp *);
int lfs_statvfs(struct mount *, struct statvfs *, struct lwp *);
int lfs_sync(struct mount *, int, kauth_cred_t, struct lwp *);
int lfs_vget(struct mount *, ino_t, struct vnode **);
int lfs_fhtovp(struct mount *, struct fid *, struct vnode **);
int lfs_vptofh(struct vnode *, struct fid *, size_t *);
void lfs_vinit(struct mount *, struct vnode **);
int lfs_resize_fs(struct lfs *, int);
/* lfs_vnops.c */
void lfs_mark_vnode(struct vnode *);
void lfs_unmark_vnode(struct vnode *);
int lfs_gop_alloc(struct vnode *, off_t, off_t, int, kauth_cred_t);
void lfs_gop_size(struct vnode *, off_t, off_t *, int);
int lfs_putpages_ext(void *, int);
int lfs_gatherpages(struct vnode *);
void lfs_flush_dirops(struct lfs *);
void lfs_flush_pchain(struct lfs *);
int lfs_bwrite (void *);
int lfs_fsync (void *);
int lfs_symlink (void *);
int lfs_mknod (void *);
int lfs_create (void *);
int lfs_mkdir (void *);
int lfs_read (void *);
int lfs_remove (void *);
int lfs_rmdir (void *);
int lfs_link (void *);
int lfs_mmap (void *);
int lfs_rename (void *);
int lfs_getattr (void *);
int lfs_setattr (void *);
int lfs_close (void *);
int lfsspec_close(void *);
int lfsfifo_close(void *);
int lfs_fcntl (void *);
int lfs_inactive (void *);
int lfs_reclaim (void *);
int lfs_strategy (void *);
int lfs_write (void *);
int lfs_getpages (void *);
int lfs_putpages (void *);
#ifdef SYSCTL_SETUP_PROTO
SYSCTL_SETUP_PROTO(sysctl_vfs_lfs_setup);
#endif /* SYSCTL_SETUP_PROTO */
extern int lfs_mount_type;
extern int (**lfs_vnodeop_p)(void *);
extern int (**lfs_specop_p)(void *);
extern int (**lfs_fifoop_p)(void *);
extern const struct genfs_ops lfs_genfsops;
#endif /* defined(_KERNEL) */
/* lfs_cksum.c */
u_int32_t cksum(void *, size_t);
u_int32_t lfs_cksum_part(void *, size_t, u_int32_t);
#define lfs_cksum_fold(sum) (sum)
u_int32_t lfs_sb_cksum(struct dlfs *);
__END_DECLS
#endif /* !_UFS_LFS_LFS_EXTERN_H_ */
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