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/fs/ext2fs/ext2_extern.h

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    1 /*-
    2  *  modified for EXT2FS support in Lites 1.1
    3  *
    4  *  Aug 1995, Godmar Back (gback@cs.utah.edu)
    5  *  University of Utah, Department of Computer Science
    6  */
    7 /*-
    8  * SPDX-License-Identifier: BSD-3-Clause
    9  *
   10  * Copyright (c) 1991, 1993, 1994
   11  *      The Regents of the University of California.  All rights reserved.
   12  *
   13  * Redistribution and use in source and binary forms, with or without
   14  * modification, are permitted provided that the following conditions
   15  * are met:
   16  * 1. Redistributions of source code must retain the above copyright
   17  *    notice, this list of conditions and the following disclaimer.
   18  * 2. Redistributions in binary form must reproduce the above copyright
   19  *    notice, this list of conditions and the following disclaimer in the
   20  *    documentation and/or other materials provided with the distribution.
   21  * 3. Neither the name of the University nor the names of its contributors
   22  *    may be used to endorse or promote products derived from this software
   23  *    without specific prior written permission.
   24  *
   25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   35  * SUCH DAMAGE.
   36  *
   37  *      @(#)ffs_extern.h        8.3 (Berkeley) 4/16/94
   38  * $FreeBSD: releng/12.0/sys/fs/ext2fs/ext2_extern.h 338150 2018-08-21 18:39:02Z fsu $
   39  */
   40 
   41 #ifndef _FS_EXT2FS_EXT2_EXTERN_H_
   42 #define _FS_EXT2FS_EXT2_EXTERN_H_
   43 
   44 struct ext2fs_dinode;
   45 struct ext2fs_direct_2;
   46 struct ext2fs_direct_tail;
   47 struct ext2fs_searchslot;
   48 struct indir;
   49 struct inode;
   50 struct mount;
   51 struct vfsconf;
   52 struct vnode;
   53 
   54 int     ext2_add_entry(struct vnode *, struct ext2fs_direct_2 *);
   55 int     ext2_alloc(struct inode *, daddr_t, e4fs_daddr_t, int,
   56             struct ucred *, e4fs_daddr_t *);
   57 e4fs_daddr_t ext2_alloc_meta(struct inode *ip);
   58 int     ext2_balloc(struct inode *,
   59             e2fs_lbn_t, int, struct ucred *, struct buf **, int);
   60 int     ext2_blkatoff(struct vnode *, off_t, char **, struct buf **);
   61 void    ext2_blkfree(struct inode *,  e4fs_daddr_t, long);
   62 e4fs_daddr_t    ext2_blkpref(struct inode *, e2fs_lbn_t, int, e2fs_daddr_t *,
   63             e2fs_daddr_t);
   64 int     ext2_bmap(struct vop_bmap_args *);
   65 int     ext2_bmaparray(struct vnode *, daddr_t, daddr_t *, int *, int *);
   66 int     ext4_bmapext(struct vnode *, int32_t, int64_t *, int *, int *);
   67 void    ext2_clusteracct(struct m_ext2fs *, char *, int, e4fs_daddr_t, int);
   68 void    ext2_dirbad(struct inode *ip, doff_t offset, char *how);
   69 void    ext2_fserr(struct m_ext2fs *, uid_t, char *);
   70 int     ext2_ei2i(struct ext2fs_dinode *, struct inode *);
   71 int     ext2_getlbns(struct vnode *, daddr_t, struct indir *, int *);
   72 int     ext2_i2ei(struct inode *, struct ext2fs_dinode *);
   73 void    ext2_itimes(struct vnode *vp);
   74 int     ext2_reallocblks(struct vop_reallocblks_args *);
   75 int     ext2_reclaim(struct vop_reclaim_args *);
   76 int     ext2_truncate(struct vnode *, off_t, int, struct ucred *, struct thread *);
   77 int     ext2_update(struct vnode *, int);
   78 int     ext2_valloc(struct vnode *, int, struct ucred *, struct vnode **);
   79 int     ext2_vfree(struct vnode *, ino_t, int);
   80 int     ext2_vinit(struct mount *, struct vop_vector *, struct vnode **vpp);
   81 int     ext2_lookup(struct vop_cachedlookup_args *);
   82 int     ext2_readdir(struct vop_readdir_args *);
   83 #ifdef EXT2FS_DEBUG
   84 void    ext2_print_inode(struct inode *);
   85 #endif
   86 int     ext2_direnter(struct inode *, 
   87                 struct vnode *, struct componentname *);
   88 int     ext2_dirremove(struct vnode *, struct componentname *);
   89 int     ext2_dirrewrite(struct inode *,
   90                 struct inode *, struct componentname *);
   91 int     ext2_dirempty(struct inode *, ino_t, struct ucred *);
   92 int     ext2_checkpath(struct inode *, struct inode *, struct ucred *);
   93 int     ext2_cg_has_sb(struct m_ext2fs *fs, int cg);
   94 int     ext2_inactive(struct vop_inactive_args *);
   95 int     ext2_htree_add_entry(struct vnode *, struct ext2fs_direct_2 *,
   96             struct componentname *);
   97 int     ext2_htree_create_index(struct vnode *, struct componentname *,
   98             struct ext2fs_direct_2 *);
   99 int     ext2_htree_has_idx(struct inode *);
  100 int     ext2_htree_hash(const char *, int, uint32_t *, int, uint32_t *,
  101             uint32_t *);
  102 int     ext2_htree_lookup(struct inode *, const char *, int, struct buf **,
  103             int *, doff_t *, doff_t *, doff_t *, struct ext2fs_searchslot *);
  104 int     ext2_search_dirblock(struct inode *, void *, int *, const char *, int,
  105             int *, doff_t *, doff_t *, doff_t *, struct ext2fs_searchslot *);
  106 uint32_t        e2fs_gd_get_ndirs(struct ext2_gd *gd);
  107 uint64_t        e2fs_gd_get_i_tables(struct ext2_gd *);
  108 void    ext2_sb_csum_set_seed(struct m_ext2fs *);
  109 int     ext2_sb_csum_verify(struct m_ext2fs *);
  110 void    ext2_sb_csum_set(struct m_ext2fs *);
  111 int     ext2_extattr_blk_csum_verify(struct inode *, struct buf *);
  112 void    ext2_extattr_blk_csum_set(struct inode *, struct buf *);
  113 int     ext2_dir_blk_csum_verify(struct inode *, struct buf *);
  114 struct ext2fs_direct_tail       *ext2_dirent_get_tail(struct inode *ip,
  115     struct ext2fs_direct_2 *ep);
  116 void    ext2_dirent_csum_set(struct inode *, struct ext2fs_direct_2 *);
  117 int     ext2_dirent_csum_verify(struct inode *ip, struct ext2fs_direct_2 *ep);
  118 void    ext2_dx_csum_set(struct inode *, struct ext2fs_direct_2 *);
  119 int     ext2_dx_csum_verify(struct inode *ip, struct ext2fs_direct_2 *ep);
  120 int     ext2_extent_blk_csum_verify(struct inode *, void *);
  121 void    ext2_extent_blk_csum_set(struct inode *, void *);
  122 void    ext2_init_dirent_tail(struct ext2fs_direct_tail *);
  123 int     ext2_is_dirent_tail(struct inode *, struct ext2fs_direct_2 *);
  124 int     ext2_gd_i_bitmap_csum_verify(struct m_ext2fs *, int, struct buf *);
  125 void    ext2_gd_i_bitmap_csum_set(struct m_ext2fs *, int, struct buf *);
  126 int     ext2_gd_b_bitmap_csum_verify(struct m_ext2fs *, int, struct buf *);
  127 void    ext2_gd_b_bitmap_csum_set(struct m_ext2fs *, int, struct buf *);
  128 int     ext2_ei_csum_verify(struct inode *, struct ext2fs_dinode *);
  129 void    ext2_ei_csum_set(struct inode *, struct ext2fs_dinode *);
  130 int     ext2_gd_csum_verify(struct m_ext2fs *, struct cdev *);
  131 void    ext2_gd_csum_set(struct m_ext2fs *);
  132 
  133 /* Flags to low-level allocation routines.
  134  * The low 16-bits are reserved for IO_ flags from vnode.h.
  135  */
  136 #define BA_CLRBUF       0x00010000      /* Clear invalid areas of buffer. */
  137 #define BA_SEQMASK      0x7F000000      /* Bits holding seq heuristic. */
  138 #define BA_SEQSHIFT     24
  139 #define BA_SEQMAX       0x7F
  140 
  141 extern struct vop_vector ext2_vnodeops;
  142 extern struct vop_vector ext2_fifoops;
  143 
  144 #endif  /* !_FS_EXT2FS_EXT2_EXTERN_H_ */

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