1b9c6382e3
The suspension helpers are now put into file system specific operations. This means every file system not supporting these helpers cannot be suspended and therefore snapshots are no longer possible. Implemented for file systems of type ffs. The new API is enabled on a kernel option NEWVNGATE. This option is not enabled by default in any kernel config. Presented and discussed on tech-kern with much input from Bill Studenmund <wrstuden@netbsd.org> and YAMAMOTO Takashi <yamt@netbsd.org>. Welcome to 4.99.9 (new vfs op vfs_suspendctl).
223 lines
8.1 KiB
C
223 lines
8.1 KiB
C
/* $NetBSD: ffs_extern.h,v 1.55 2007/01/19 14:49:12 hannken Exp $ */
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/*-
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* Copyright (c) 1991, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ffs_extern.h 8.6 (Berkeley) 3/30/95
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*/
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#ifndef _UFS_FFS_FFS_EXTERN_H_
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#define _UFS_FFS_FFS_EXTERN_H_
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/*
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* Sysctl values for the fast filesystem.
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*/
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#define FFS_CLUSTERREAD 1 /* cluster reading enabled */
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#define FFS_CLUSTERWRITE 2 /* cluster writing enabled */
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#define FFS_REALLOCBLKS 3 /* block reallocation enabled */
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#define FFS_ASYNCFREE 4 /* asynchronous block freeing enabled */
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#define FFS_LOG_CHANGEOPT 5 /* log optimalization strategy change */
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#define FFS_MAXID 6 /* number of valid ffs ids */
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#define FFS_ITIMES(ip, acc, mod, cre) \
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while ((ip)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY)) \
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ffs_itimes(ip, acc, mod, cre)
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struct buf;
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struct fid;
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struct fs;
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struct inode;
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struct ufs1_dinode;
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struct ufs2_dinode;
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struct mount;
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struct nameidata;
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struct lwp;
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struct statvfs;
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struct timeval;
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struct timespec;
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struct ufsmount;
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struct uio;
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struct vnode;
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struct mbuf;
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struct cg;
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#if defined(_KERNEL)
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#define FFS_ITIMES(ip, acc, mod, cre) \
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while ((ip)->i_flag & (IN_ACCESS | IN_CHANGE | IN_UPDATE | IN_MODIFY)) \
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ffs_itimes(ip, acc, mod, cre)
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extern struct pool ffs_inode_pool; /* memory pool for inodes */
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extern struct pool ffs_dinode1_pool; /* memory pool for UFS1 dinodes */
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extern struct pool ffs_dinode2_pool; /* memory pool for UFS2 dinodes */
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#endif /* defined(_KERNEL) */
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__BEGIN_DECLS
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#if defined(_KERNEL)
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/* ffs_alloc.c */
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int ffs_alloc(struct inode *, daddr_t, daddr_t , int, kauth_cred_t,
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daddr_t *);
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int ffs_realloccg(struct inode *, daddr_t, daddr_t, int, int ,
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kauth_cred_t, struct buf **, daddr_t *);
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#if 0
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int ffs_reallocblks(void *);
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#endif
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int ffs_valloc(struct vnode *, int, kauth_cred_t, struct vnode **);
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daddr_t ffs_blkpref_ufs1(struct inode *, daddr_t, int, int32_t *);
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daddr_t ffs_blkpref_ufs2(struct inode *, daddr_t, int, int64_t *);
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void ffs_blkfree(struct fs *, struct vnode *, daddr_t, long, ino_t);
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int ffs_vfree(struct vnode *, ino_t, int);
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void ffs_clusteracct(struct fs *, struct cg *, int32_t, int);
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int ffs_checkfreefile(struct fs *, struct vnode *, ino_t);
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/* ffs_balloc.c */
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int ffs_balloc(struct vnode *, off_t, int, kauth_cred_t, int,
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struct buf **);
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/* ffs_inode.c */
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int ffs_update(struct vnode *, const struct timespec *,
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const struct timespec *, int);
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int ffs_truncate(struct vnode *, off_t, int, kauth_cred_t, struct lwp *);
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/* ffs_vfsops.c */
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void ffs_init(void);
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void ffs_reinit(void);
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void ffs_done(void);
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int ffs_mountroot(void);
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int ffs_mount(struct mount *, const char *, void *, struct nameidata *,
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struct lwp *);
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int ffs_reload(struct mount *, kauth_cred_t, struct lwp *);
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int ffs_mountfs(struct vnode *, struct mount *, struct lwp *);
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int ffs_unmount(struct mount *, int, struct lwp *);
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int ffs_flushfiles(struct mount *, int, struct lwp *);
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int ffs_statvfs(struct mount *, struct statvfs *, struct lwp *);
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int ffs_sync(struct mount *, int, kauth_cred_t, struct lwp *);
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int ffs_vget(struct mount *, ino_t, struct vnode **);
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int ffs_fhtovp(struct mount *, struct fid *, struct vnode **);
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int ffs_vptofh(struct vnode *, struct fid *, size_t *);
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int ffs_extattrctl(struct mount *, int, struct vnode *, int,
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const char *, struct lwp *);
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int ffs_suspendctl(struct mount *, int);
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int ffs_sbupdate(struct ufsmount *, int);
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int ffs_cgupdate(struct ufsmount *, int);
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/* ffs_vnops.c */
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int ffs_read(void *);
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int ffs_write(void *);
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int ffs_fsync(void *);
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int ffs_reclaim(void *);
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int ffs_getpages(void *);
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void ffs_gop_size(struct vnode *, off_t, off_t *, int);
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int ffs_openextattr(void *);
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int ffs_closeextattr(void *);
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int ffs_getextattr(void *);
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int ffs_setextattr(void *);
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int ffs_listextattr(void *);
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int ffs_deleteextattr(void *);
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#ifdef SYSCTL_SETUP_PROTO
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SYSCTL_SETUP_PROTO(sysctl_vfs_ffs_setup);
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#endif /* SYSCTL_SETUP_PROTO */
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/*
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* Snapshot function prototypes.
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*/
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int ffs_snapblkfree(struct fs *, struct vnode *, daddr_t, long, ino_t);
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void ffs_snapremove(struct vnode *);
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int ffs_snapshot(struct mount *, struct vnode *, struct timespec *);
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void ffs_snapshot_mount(struct mount *);
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void ffs_snapshot_unmount(struct mount *);
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void ffs_snapgone(struct inode *);
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/*
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* Soft dependency function prototypes.
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*/
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void softdep_initialize(void);
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void softdep_reinitialize(void);
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int softdep_mount(struct vnode *, struct mount *, struct fs *,
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kauth_cred_t);
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int softdep_flushworklist(struct mount *, int *, struct lwp *);
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int softdep_flushfiles(struct mount *, int, struct lwp *);
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void softdep_update_inodeblock(struct inode *, struct buf *, int);
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void softdep_load_inodeblock(struct inode *);
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void softdep_freefile(struct vnode *, ino_t, int);
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void softdep_setup_freeblocks(struct inode *, off_t, int);
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void softdep_setup_inomapdep(struct buf *, struct inode *, ino_t);
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void softdep_setup_blkmapdep(struct buf *, struct fs *, daddr_t);
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void softdep_setup_allocdirect(struct inode *, daddr_t, daddr_t,
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daddr_t, long, long, struct buf *);
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void softdep_setup_allocindir_meta(struct buf *, struct inode *,
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struct buf *, int, daddr_t);
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void softdep_setup_allocindir_page(struct inode *, daddr_t,
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struct buf *, int, daddr_t, daddr_t,
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struct buf *);
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void softdep_fsync_mountdev(struct vnode *);
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int softdep_sync_metadata(void *);
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extern int (**ffs_vnodeop_p)(void *);
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extern int (**ffs_specop_p)(void *);
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extern int (**ffs_fifoop_p)(void *);
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#endif /* defined(_KERNEL) */
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/* ffs_appleufs.c */
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struct appleufslabel;
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u_int16_t ffs_appleufs_cksum(const struct appleufslabel *);
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int ffs_appleufs_validate(const char*, const struct appleufslabel *,
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struct appleufslabel *);
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void ffs_appleufs_set(struct appleufslabel *, const char *, time_t,
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uint64_t);
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/* ffs_bswap.c */
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void ffs_sb_swap(struct fs*, struct fs *);
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void ffs_dinode1_swap(struct ufs1_dinode *, struct ufs1_dinode *);
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void ffs_dinode2_swap(struct ufs2_dinode *, struct ufs2_dinode *);
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struct csum;
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void ffs_csum_swap(struct csum *, struct csum *, int);
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struct csum_total;
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void ffs_csumtotal_swap(struct csum_total *, struct csum_total *);
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void ffs_cg_swap(struct cg *, struct cg *, struct fs *);
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/* ffs_subr.c */
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void ffs_load_inode(struct buf *, struct inode *, struct fs *, ino_t);
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int ffs_freefile(struct fs *, struct vnode *, ino_t, int);
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void ffs_fragacct(struct fs *, int, int32_t[], int, int);
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int ffs_isblock(struct fs *, u_char *, int32_t);
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int ffs_isfreeblock(struct fs *, u_char *, int32_t);
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void ffs_clrblock(struct fs *, u_char *, int32_t);
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void ffs_setblock(struct fs *, u_char *, int32_t);
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void ffs_itimes(struct inode *, const struct timespec *,
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const struct timespec *, const struct timespec *);
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__END_DECLS
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#endif /* !_UFS_FFS_FFS_EXTERN_H_ */
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