1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2010 Zheng Liu <lz@freebsd.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/types.h> 34 #include <sys/kernel.h> 35 #include <sys/malloc.h> 36 #include <sys/vnode.h> 37 #include <sys/bio.h> 38 #include <sys/buf.h> 39 #include <sys/endian.h> 40 #include <sys/conf.h> 41 #include <sys/stat.h> 42 #include <sys/mount.h> 43 #include <sys/mutex.h> 44 45 #include <vfs/ext2fs/ext2_mount.h> 46 #include <vfs/ext2fs/fs.h> 47 #include <vfs/ext2fs/inode.h> 48 #include <vfs/ext2fs/ext2fs.h> 49 #include <vfs/ext2fs/ext2_extents.h> 50 #include <vfs/ext2fs/ext2_extern.h> 51 52 SDT_PROVIDER_DECLARE(ext2fs); 53 /* 54 * ext2fs trace probe: 55 * arg0: verbosity. Higher numbers give more verbose messages 56 * arg1: Textual message 57 */ 58 SDT_PROBE_DEFINE2(ext2fs, , trace, extents, "int", "char*"); 59 60 #ifdef EXT2FS_PRINT_EXTENTS 61 static void 62 ext4_ext_print_extent(struct ext4_extent *ep) 63 { 64 } 65 66 static void 67 ext4_ext_print_index(struct inode *ip, struct ext4_extent_index *ex, int do_walk) 68 { 69 } 70 71 static void 72 ext4_ext_print_header(struct inode *ip, struct ext4_extent_header *ehp) 73 { 74 } 75 76 static void 77 ext4_ext_print_path(struct inode *ip, struct ext4_extent_path *path) 78 { 79 } 80 81 void 82 ext4_ext_print_extent_tree_status(struct inode *ip) 83 { 84 } 85 #endif 86 87 static inline struct ext4_extent_header * 88 ext4_ext_inode_header(struct inode *ip) 89 { 90 return (NULL); 91 } 92 93 static inline struct ext4_extent_header * 94 ext4_ext_block_header(char *bdata) 95 { 96 return (NULL); 97 } 98 99 static inline unsigned short 100 ext4_ext_inode_depth(struct inode *ip) 101 { 102 return (0); 103 } 104 105 static inline e4fs_daddr_t 106 ext4_ext_index_pblock(struct ext4_extent_index *index) 107 { 108 return (0); 109 } 110 111 static inline void 112 ext4_index_store_pblock(struct ext4_extent_index *index, e4fs_daddr_t pb) 113 { 114 } 115 116 static inline e4fs_daddr_t 117 ext4_ext_extent_pblock(struct ext4_extent *extent) 118 { 119 return (0); 120 } 121 122 static inline void 123 ext4_ext_store_pblock(struct ext4_extent *ex, e4fs_daddr_t pb) 124 { 125 } 126 127 int 128 ext4_ext_in_cache(struct inode *ip, daddr_t lbn, struct ext4_extent *ep) 129 { 130 return (EXT4_EXT_CACHE_NO); 131 } 132 133 void 134 ext4_ext_path_free(struct ext4_extent_path *path) 135 { 136 } 137 138 int 139 ext4_ext_find_extent(struct inode *ip, daddr_t block, 140 struct ext4_extent_path **ppath) 141 { 142 return (EINVAL); 143 } 144 145 static inline int 146 ext4_ext_space_root(struct inode *ip) 147 { 148 return (0); 149 } 150 151 static inline int 152 ext4_ext_space_block(struct inode *ip) 153 { 154 return (0); 155 } 156 157 static inline int 158 ext4_ext_space_block_index(struct inode *ip) 159 { 160 return (0); 161 } 162 163 void 164 ext4_ext_tree_init(struct inode *ip) 165 { 166 } 167 168 static inline void 169 ext4_ext_put_in_cache(struct inode *ip, uint32_t blk, 170 uint32_t len, uint32_t start, int type) 171 { 172 } 173 174 static inline int 175 ext4_can_extents_be_merged(struct ext4_extent *ex1, 176 struct ext4_extent *ex2) 177 { 178 return (0); 179 } 180 181 int 182 ext4_ext_get_blocks(struct inode *ip, e4fs_daddr_t iblk, 183 unsigned long max_blocks, struct ucred *cred, struct buf **bpp, 184 int *pallocated, daddr_t *nb) 185 { 186 return (EINVAL); 187 } 188 189 static inline uint16_t 190 ext4_ext_get_actual_len(struct ext4_extent *ext) 191 { 192 return (0); 193 } 194 195 static inline struct ext4_extent_header * 196 ext4_ext_header(struct inode *ip) 197 { 198 return (NULL); 199 } 200 201 static inline int 202 ext4_ext_more_to_rm(struct ext4_extent_path *path) 203 { 204 return (0); 205 } 206 207 int 208 ext4_ext_remove_space(struct inode *ip, off_t length, int flags, 209 struct ucred *cred, struct thread *td) 210 { 211 return (EINVAL); 212 } 213