The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/ufs/ffs/ffs_extern.h

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    1 /*-
    2  * Copyright (c) 1991, 1993, 1994
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  * 4. Neither the name of the University nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      @(#)ffs_extern.h        8.6 (Berkeley) 3/30/95
   30  * $FreeBSD: releng/10.1/sys/ufs/ffs/ffs_extern.h 262779 2014-03-05 04:23:19Z pfg $
   31  */
   32 
   33 #ifndef _UFS_FFS_EXTERN_H
   34 #define _UFS_FFS_EXTERN_H
   35 
   36 #ifndef _KERNEL
   37 #error "No user-serving parts inside"
   38 #else
   39 
   40 struct buf;
   41 struct cg;
   42 struct fid;
   43 struct fs;
   44 struct inode;
   45 struct malloc_type;
   46 struct mount;
   47 struct thread;
   48 struct sockaddr;
   49 struct statfs;
   50 struct ucred;
   51 struct vnode;
   52 struct vop_fsync_args;
   53 struct vop_reallocblks_args;
   54 struct workhead;
   55 
   56 int     ffs_alloc(struct inode *, ufs2_daddr_t, ufs2_daddr_t, int, int,
   57             struct ucred *, ufs2_daddr_t *);
   58 int     ffs_balloc_ufs1(struct vnode *a_vp, off_t a_startoffset, int a_size,
   59             struct ucred *a_cred, int a_flags, struct buf **a_bpp);
   60 int     ffs_balloc_ufs2(struct vnode *a_vp, off_t a_startoffset, int a_size,
   61             struct ucred *a_cred, int a_flags, struct buf **a_bpp);
   62 int     ffs_blkatoff(struct vnode *, off_t, char **, struct buf **);
   63 void    ffs_blkfree(struct ufsmount *, struct fs *, struct vnode *,
   64             ufs2_daddr_t, long, ino_t, enum vtype, struct workhead *);
   65 ufs2_daddr_t ffs_blkpref_ufs1(struct inode *, ufs_lbn_t, int, ufs1_daddr_t *);
   66 ufs2_daddr_t ffs_blkpref_ufs2(struct inode *, ufs_lbn_t, int, ufs2_daddr_t *);
   67 int     ffs_checkfreefile(struct fs *, struct vnode *, ino_t);
   68 void    ffs_clrblock(struct fs *, u_char *, ufs1_daddr_t);
   69 void    ffs_clusteracct(struct fs *, struct cg *, ufs1_daddr_t, int);
   70 void    ffs_bdflush(struct bufobj *, struct buf *);
   71 int     ffs_copyonwrite(struct vnode *, struct buf *);
   72 int     ffs_flushfiles(struct mount *, int, struct thread *);
   73 void    ffs_fragacct(struct fs *, int, int32_t [], int);
   74 int     ffs_freefile(struct ufsmount *, struct fs *, struct vnode *, ino_t,
   75             int, struct workhead *);
   76 void    ffs_fserr(struct fs *, ino_t, char *);
   77 int     ffs_isblock(struct fs *, u_char *, ufs1_daddr_t);
   78 int     ffs_isfreeblock(struct fs *, u_char *, ufs1_daddr_t);
   79 void    ffs_load_inode(struct buf *, struct inode *, struct fs *, ino_t);
   80 int     ffs_mountroot(void);
   81 void    ffs_oldfscompat_write(struct fs *, struct ufsmount *);
   82 int     ffs_own_mount(const struct mount *mp);
   83 int     ffs_reallocblks(struct vop_reallocblks_args *);
   84 int     ffs_realloccg(struct inode *, ufs2_daddr_t, ufs2_daddr_t,
   85             ufs2_daddr_t, int, int, int, struct ucred *, struct buf **);
   86 int     ffs_reload(struct mount *, struct thread *, int);
   87 int     ffs_sbupdate(struct ufsmount *, int, int);
   88 void    ffs_setblock(struct fs *, u_char *, ufs1_daddr_t);
   89 int     ffs_snapblkfree(struct fs *, struct vnode *, ufs2_daddr_t, long, ino_t,
   90             enum vtype, struct workhead *);
   91 void    ffs_snapremove(struct vnode *vp);
   92 int     ffs_snapshot(struct mount *mp, char *snapfile);
   93 void    ffs_snapshot_mount(struct mount *mp);
   94 void    ffs_snapshot_unmount(struct mount *mp);
   95 void    process_deferred_inactive(struct mount *mp);
   96 void    ffs_sync_snap(struct mount *, int);
   97 int     ffs_syncvnode(struct vnode *vp, int waitfor, int flags);
   98 int     ffs_truncate(struct vnode *, off_t, int, struct ucred *);
   99 int     ffs_update(struct vnode *, int);
  100 int     ffs_valloc(struct vnode *, int, struct ucred *, struct vnode **);
  101 
  102 int     ffs_vfree(struct vnode *, ino_t, int);
  103 vfs_vget_t ffs_vget;
  104 int     ffs_vgetf(struct mount *, ino_t, int, struct vnode **, int);
  105 void    ffs_susp_initialize(void);
  106 void    ffs_susp_uninitialize(void);
  107 
  108 #define FFSV_FORCEINSMQ 0x0001
  109 
  110 extern struct vop_vector ffs_vnodeops1;
  111 extern struct vop_vector ffs_fifoops1;
  112 extern struct vop_vector ffs_vnodeops2;
  113 extern struct vop_vector ffs_fifoops2;
  114 
  115 /*
  116  * Soft update function prototypes.
  117  */
  118 
  119 int     softdep_check_suspend(struct mount *, struct vnode *,
  120           int, int, int, int);
  121 void    softdep_get_depcounts(struct mount *, int *, int *);
  122 void    softdep_initialize(void);
  123 void    softdep_uninitialize(void);
  124 int     softdep_mount(struct vnode *, struct mount *, struct fs *,
  125             struct ucred *);
  126 void    softdep_unmount(struct mount *);
  127 int     softdep_move_dependencies(struct buf *, struct buf *);
  128 int     softdep_flushworklist(struct mount *, int *, struct thread *);
  129 int     softdep_flushfiles(struct mount *, int, struct thread *);
  130 void    softdep_update_inodeblock(struct inode *, struct buf *, int);
  131 void    softdep_load_inodeblock(struct inode *);
  132 void    softdep_freefile(struct vnode *, ino_t, int);
  133 int     softdep_request_cleanup(struct fs *, struct vnode *,
  134             struct ucred *, int);
  135 void    softdep_setup_freeblocks(struct inode *, off_t, int);
  136 void    softdep_setup_inomapdep(struct buf *, struct inode *, ino_t, int);
  137 void    softdep_setup_blkmapdep(struct buf *, struct mount *, ufs2_daddr_t,
  138             int, int);
  139 void    softdep_setup_allocdirect(struct inode *, ufs_lbn_t, ufs2_daddr_t,
  140             ufs2_daddr_t, long, long, struct buf *);
  141 void    softdep_setup_allocext(struct inode *, ufs_lbn_t, ufs2_daddr_t,
  142             ufs2_daddr_t, long, long, struct buf *);
  143 void    softdep_setup_allocindir_meta(struct buf *, struct inode *,
  144             struct buf *, int, ufs2_daddr_t);
  145 void    softdep_setup_allocindir_page(struct inode *, ufs_lbn_t,
  146             struct buf *, int, ufs2_daddr_t, ufs2_daddr_t, struct buf *);
  147 void    softdep_setup_blkfree(struct mount *, struct buf *, ufs2_daddr_t, int,
  148             struct workhead *);
  149 void    softdep_setup_inofree(struct mount *, struct buf *, ino_t,
  150             struct workhead *);
  151 void    softdep_setup_sbupdate(struct ufsmount *, struct fs *, struct buf *);
  152 void    softdep_fsync_mountdev(struct vnode *);
  153 int     softdep_sync_metadata(struct vnode *);
  154 int     softdep_sync_buf(struct vnode *, struct buf *, int);
  155 int     softdep_fsync(struct vnode *);
  156 int     softdep_prealloc(struct vnode *, int);
  157 int     softdep_journal_lookup(struct mount *, struct vnode **);
  158 void    softdep_journal_freeblocks(struct inode *, struct ucred *, off_t, int);
  159 void    softdep_journal_fsync(struct inode *);
  160 void    softdep_buf_append(struct buf *, struct workhead *);
  161 void    softdep_inode_append(struct inode *, struct ucred *, struct workhead *);
  162 void    softdep_freework(struct workhead *);
  163 
  164 
  165 /*
  166  * Things to request flushing in softdep_request_cleanup()
  167  */
  168 #define FLUSH_INODES            1
  169 #define FLUSH_INODES_WAIT       2
  170 #define FLUSH_BLOCKS            3
  171 #define FLUSH_BLOCKS_WAIT       4
  172 /*
  173  * Flag to ffs_syncvnode() to request flushing of data only,
  174  * but skip the ffs_update() on the inode itself. Used to avoid
  175  * deadlock when flushing snapshot inodes while holding snaplk.
  176  */
  177 #define NO_INO_UPDT             0x00000001
  178 
  179 int     ffs_rdonly(struct inode *);
  180 
  181 TAILQ_HEAD(snaphead, inode);
  182 
  183 struct snapdata {
  184         LIST_ENTRY(snapdata) sn_link;
  185         struct snaphead sn_head;
  186         daddr_t sn_listsize;
  187         daddr_t *sn_blklist;
  188         struct lock sn_lock;
  189 };
  190 
  191 #endif /* _KERNEL */
  192 
  193 #endif /* !_UFS_FFS_EXTERN_H */

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