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  * $FreeBSD$
   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 void    ffs_oldfscompat_write(struct fs *, struct ufsmount *);
   81 int     ffs_own_mount(const struct mount *mp);
   82 int     ffs_reallocblks(struct vop_reallocblks_args *);
   83 int     ffs_realloccg(struct inode *, ufs2_daddr_t, ufs2_daddr_t,
   84             ufs2_daddr_t, int, int, int, struct ucred *, struct buf **);
   85 int     ffs_reload(struct mount *, struct thread *, int);
   86 int     ffs_sbupdate(struct ufsmount *, int, int);
   87 void    ffs_setblock(struct fs *, u_char *, ufs1_daddr_t);
   88 int     ffs_snapblkfree(struct fs *, struct vnode *, ufs2_daddr_t, long, ino_t,
   89             enum vtype, struct workhead *);
   90 void    ffs_snapremove(struct vnode *vp);
   91 int     ffs_snapshot(struct mount *mp, char *snapfile);
   92 void    ffs_snapshot_mount(struct mount *mp);
   93 void    ffs_snapshot_unmount(struct mount *mp);
   94 void    process_deferred_inactive(struct mount *mp);
   95 void    ffs_sync_snap(struct mount *, int);
   96 int     ffs_syncvnode(struct vnode *vp, int waitfor, int flags);
   97 int     ffs_truncate(struct vnode *, off_t, int, struct ucred *);
   98 int     ffs_update(struct vnode *, int);
   99 int     ffs_valloc(struct vnode *, int, struct ucred *, struct vnode **);
  100 
  101 int     ffs_vfree(struct vnode *, ino_t, int);
  102 vfs_vget_t ffs_vget;
  103 int     ffs_vgetf(struct mount *, ino_t, int, struct vnode **, int);
  104 void    ffs_susp_initialize(void);
  105 void    ffs_susp_uninitialize(void);
  106 
  107 #define FFSV_FORCEINSMQ 0x0001
  108 
  109 #define FFSR_FORCE      0x0001
  110 #define FFSR_UNSUSPEND  0x0002
  111 
  112 extern struct vop_vector ffs_vnodeops1;
  113 extern struct vop_vector ffs_fifoops1;
  114 extern struct vop_vector ffs_vnodeops2;
  115 extern struct vop_vector ffs_fifoops2;
  116 
  117 /*
  118  * Soft update function prototypes.
  119  */
  120 
  121 int     softdep_check_suspend(struct mount *, struct vnode *,
  122           int, int, int, int);
  123 void    softdep_get_depcounts(struct mount *, int *, int *);
  124 void    softdep_initialize(void);
  125 void    softdep_uninitialize(void);
  126 int     softdep_mount(struct vnode *, struct mount *, struct fs *,
  127             struct ucred *);
  128 void    softdep_unmount(struct mount *);
  129 int     softdep_move_dependencies(struct buf *, struct buf *);
  130 int     softdep_flushworklist(struct mount *, int *, struct thread *);
  131 int     softdep_flushfiles(struct mount *, int, struct thread *);
  132 void    softdep_update_inodeblock(struct inode *, struct buf *, int);
  133 void    softdep_load_inodeblock(struct inode *);
  134 void    softdep_freefile(struct vnode *, ino_t, int);
  135 int     softdep_request_cleanup(struct fs *, struct vnode *,
  136             struct ucred *, int);
  137 void    softdep_setup_freeblocks(struct inode *, off_t, int);
  138 void    softdep_setup_inomapdep(struct buf *, struct inode *, ino_t, int);
  139 void    softdep_setup_blkmapdep(struct buf *, struct mount *, ufs2_daddr_t,
  140             int, int);
  141 void    softdep_setup_allocdirect(struct inode *, ufs_lbn_t, ufs2_daddr_t,
  142             ufs2_daddr_t, long, long, struct buf *);
  143 void    softdep_setup_allocext(struct inode *, ufs_lbn_t, ufs2_daddr_t,
  144             ufs2_daddr_t, long, long, struct buf *);
  145 void    softdep_setup_allocindir_meta(struct buf *, struct inode *,
  146             struct buf *, int, ufs2_daddr_t);
  147 void    softdep_setup_allocindir_page(struct inode *, ufs_lbn_t,
  148             struct buf *, int, ufs2_daddr_t, ufs2_daddr_t, struct buf *);
  149 void    softdep_setup_blkfree(struct mount *, struct buf *, ufs2_daddr_t, int,
  150             struct workhead *);
  151 void    softdep_setup_inofree(struct mount *, struct buf *, ino_t,
  152             struct workhead *);
  153 void    softdep_setup_sbupdate(struct ufsmount *, struct fs *, struct buf *);
  154 void    softdep_fsync_mountdev(struct vnode *);
  155 int     softdep_sync_metadata(struct vnode *);
  156 int     softdep_sync_buf(struct vnode *, struct buf *, int);
  157 int     softdep_fsync(struct vnode *);
  158 int     softdep_prealloc(struct vnode *, int);
  159 int     softdep_journal_lookup(struct mount *, struct vnode **);
  160 void    softdep_journal_freeblocks(struct inode *, struct ucred *, off_t, int);
  161 void    softdep_journal_fsync(struct inode *);
  162 void    softdep_buf_append(struct buf *, struct workhead *);
  163 void    softdep_inode_append(struct inode *, struct ucred *, struct workhead *);
  164 void    softdep_freework(struct workhead *);
  165 
  166 
  167 /*
  168  * Things to request flushing in softdep_request_cleanup()
  169  */
  170 #define FLUSH_INODES            1
  171 #define FLUSH_INODES_WAIT       2
  172 #define FLUSH_BLOCKS            3
  173 #define FLUSH_BLOCKS_WAIT       4
  174 /*
  175  * Flag to ffs_syncvnode() to request flushing of data only,
  176  * but skip the ffs_update() on the inode itself. Used to avoid
  177  * deadlock when flushing snapshot inodes while holding snaplk.
  178  */
  179 #define NO_INO_UPDT             0x00000001
  180 /*
  181  * Request data sync only from ffs_syncvnode(), not touching even more
  182  * metadata than NO_INO_UPDT.
  183  */
  184 #define DATA_ONLY               0x00000002
  185 
  186 int     ffs_rdonly(struct inode *);
  187 
  188 TAILQ_HEAD(snaphead, inode);
  189 
  190 struct snapdata {
  191         LIST_ENTRY(snapdata) sn_link;
  192         struct snaphead sn_head;
  193         daddr_t sn_listsize;
  194         daddr_t *sn_blklist;
  195         struct lock sn_lock;
  196 };
  197 
  198 #endif /* _KERNEL */
  199 
  200 #endif /* !_UFS_FFS_EXTERN_H */

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