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 38 #ifndef _FS_EXT2FS_EXT2_EXTERN_H_ 39 #define _FS_EXT2FS_EXT2_EXTERN_H_ 40 41 struct ext2fs_dinode; 42 struct ext2fs_direct_2; 43 struct ext2fs_direct_tail; 44 struct ext2fs_searchslot; 45 struct indir; 46 struct inode; 47 struct mount; 48 struct vfsconf; 49 struct vnode; 50 51 int ext2_add_entry(struct vnode *, struct ext2fs_direct_2 *); 52 int ext2_alloc(struct inode *, daddr_t, e4fs_daddr_t, int, 53 struct ucred *, e4fs_daddr_t *); 54 e4fs_daddr_t ext2_alloc_meta(struct inode *ip); 55 int ext2_balloc(struct inode *, 56 e2fs_lbn_t, int, struct ucred *, struct buf **, int); 57 int ext2_blkatoff(struct vnode *, off_t, char **, struct buf **); 58 void ext2_blkfree(struct inode *, e4fs_daddr_t, long); 59 e4fs_daddr_t ext2_blkpref(struct inode *, e2fs_lbn_t, int, e2fs_daddr_t *, 60 e2fs_daddr_t); 61 int ext2_bmap(struct vop_bmap_args *); 62 int ext2_bmaparray(struct vnode *, daddr_t, daddr_t *, int *, int *); 63 int ext4_bmapext(struct vnode *, int32_t, int64_t *, int *, int *); 64 int ext2_bmap_seekdata(struct vnode *, off_t *); 65 void ext2_clusteracct(struct m_ext2fs *, char *, int, e4fs_daddr_t, int); 66 void ext2_dirbad(struct inode *ip, doff_t offset, char *how); 67 int ext2_ei2i(struct ext2fs_dinode *, struct inode *); 68 int ext2_getlbns(struct vnode *, daddr_t, struct indir *, int *); 69 int ext2_i2ei(struct inode *, struct ext2fs_dinode *); 70 void ext2_itimes(struct vnode *vp); 71 int ext2_reallocblks(struct vop_reallocblks_args *); 72 int ext2_reclaim(struct vop_reclaim_args *); 73 int ext2_truncate(struct vnode *, off_t, int, struct ucred *, struct thread *); 74 int ext2_update(struct vnode *, int); 75 int ext2_valloc(struct vnode *, int, struct ucred *, struct vnode **); 76 int ext2_vfree(struct vnode *, ino_t, int); 77 int ext2_vinit(struct mount *, struct vop_vector *, struct vnode **vpp); 78 int ext2_lookup(struct vop_cachedlookup_args *); 79 int ext2_readdir(struct vop_readdir_args *); 80 #ifdef EXT2FS_PRINT_EXTENTS 81 void ext2_print_inode(struct inode *); 82 #endif 83 int ext2_direnter(struct inode *, 84 struct vnode *, struct componentname *); 85 int ext2_dirremove(struct vnode *, struct componentname *); 86 int ext2_dirrewrite(struct inode *, 87 struct inode *, struct componentname *); 88 int ext2_dirempty(struct inode *, ino_t, struct ucred *); 89 int ext2_checkpath(struct inode *, struct inode *, struct ucred *); 90 int ext2_cg_has_sb(struct m_ext2fs *fs, int cg); 91 uint64_t ext2_cg_number_gdb(struct m_ext2fs *fs, int cg); 92 int ext2_inactive(struct vop_inactive_args *); 93 int ext2_htree_add_entry(struct vnode *, struct ext2fs_direct_2 *, 94 struct componentname *); 95 int ext2_htree_create_index(struct vnode *, struct componentname *, 96 struct ext2fs_direct_2 *); 97 int ext2_htree_has_idx(struct inode *); 98 int ext2_htree_hash(const char *, int, uint32_t *, int, uint32_t *, 99 uint32_t *); 100 int ext2_htree_lookup(struct inode *, const char *, int, struct buf **, 101 int *, doff_t *, doff_t *, doff_t *, struct ext2fs_searchslot *); 102 int ext2_search_dirblock(struct inode *, void *, int *, const char *, int, 103 int *, doff_t *, doff_t *, doff_t *, struct ext2fs_searchslot *); 104 uint32_t e2fs_gd_get_ndirs(struct ext2_gd *gd); 105 uint64_t e2fs_gd_get_b_bitmap(struct ext2_gd *); 106 uint64_t e2fs_gd_get_i_bitmap(struct ext2_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 * The BA_CLRBUF flag specifies that the existing content of the block 137 * will not be completely overwritten by the caller, so buffers for new 138 * blocks must be cleared and buffers for existing blocks must be read. 139 * When BA_CLRBUF is not set the buffer will be completely overwritten 140 * and there is no reason to clear them or to spend I/O fetching existing 141 * data. The BA_CLRBUF flag is handled in the ext2_balloc() functions. 142 */ 143 #define BA_CLRBUF 0x00010000 /* Clear invalid areas of buffer. */ 144 #define BA_SEQMASK 0x7F000000 /* Bits holding seq heuristic. */ 145 #define BA_SEQSHIFT 24 146 #define BA_SEQMAX 0x7F 147 148 extern struct vop_vector ext2_vnodeops; 149 extern struct vop_vector ext2_fifoops; 150 151 #endif /* !_FS_EXT2FS_EXT2_EXTERN_H_ */ 152