contents.c revision 7c81ec40f5f466b23c2ebacabe1e4e9ac6932bd5
1ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross/* 2ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * Copyright (C) 2010 The Android Open Source Project 3ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * 4ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * Licensed under the Apache License, Version 2.0 (the "License"); 5ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * you may not use this file except in compliance with the License. 6ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * You may obtain a copy of the License at 7ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * 8ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * http://www.apache.org/licenses/LICENSE-2.0 9ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * 10ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * Unless required by applicable law or agreed to in writing, software 11ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * distributed under the License is distributed on an "AS IS" BASIS, 12ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * See the License for the specific language governing permissions and 14ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross * limitations under the License. 15ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross */ 16ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 17ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include <sys/stat.h> 18ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include <string.h> 19ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include <stdio.h> 20ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 21ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include "ext4_utils.h" 22ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include "ext4.h" 23ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include "make_ext4fs.h" 24ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include "allocate.h" 25ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include "contents.h" 26ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include "extent.h" 27ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross#include "indirect.h" 28ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 29ec0a2e83dc66d67addeb90e83144187691852a3eColin Crossstatic u32 dentry_size(u32 entries, struct dentry *dentries) 30ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross{ 31ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 len = 24; 32ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross unsigned int i; 336bd2b5d80db5630cb73e3e5a4be3b38afa241c5aColin Cross unsigned int dentry_len; 34ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 35ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross for (i = 0; i < entries; i++) { 366bd2b5d80db5630cb73e3e5a4be3b38afa241c5aColin Cross dentry_len = 8 + ALIGN(strlen(dentries[i].filename), 4); 37ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (len % info.block_size + dentry_len > info.block_size) 38ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross len += info.block_size - (len % info.block_size); 39ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross len += dentry_len; 40ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 41ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 427c81ec40f5f466b23c2ebacabe1e4e9ac6932bd5Ken Sumrall /* include size of the dentry used to pad until the end of the block */ 437c81ec40f5f466b23c2ebacabe1e4e9ac6932bd5Ken Sumrall if (len % info.block_size + 8 > info.block_size) 447c81ec40f5f466b23c2ebacabe1e4e9ac6932bd5Ken Sumrall len += info.block_size - (len % info.block_size); 457c81ec40f5f466b23c2ebacabe1e4e9ac6932bd5Ken Sumrall len += 8; 467c81ec40f5f466b23c2ebacabe1e4e9ac6932bd5Ken Sumrall 47ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return len; 48ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 49ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 50ec0a2e83dc66d67addeb90e83144187691852a3eColin Crossstatic struct ext4_dir_entry_2 *add_dentry(u8 *data, u32 *offset, 51ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross struct ext4_dir_entry_2 *prev, u32 inode, const char *name, 52ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u8 file_type) 53ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross{ 54ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u8 name_len = strlen(name); 556bd2b5d80db5630cb73e3e5a4be3b38afa241c5aColin Cross u16 rec_len = 8 + ALIGN(name_len, 4); 56ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross struct ext4_dir_entry_2 *dentry; 57ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 58ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 start_block = *offset / info.block_size; 592ff1c5b6e8c1457dbb65fb8305db92c74e95dd42Colin Cross u32 end_block = (*offset + rec_len - 1) / info.block_size; 60ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (start_block != end_block) { 61ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross /* Adding this dentry will cross a block boundary, so pad the previous 62ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentry to the block boundary */ 63ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (!prev) 64ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross critical_error("no prev"); 65ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross prev->rec_len += end_block * info.block_size - *offset; 66ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross *offset = end_block * info.block_size; 67ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 68ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 69ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentry = (struct ext4_dir_entry_2 *)(data + *offset); 70ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentry->inode = inode; 71ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentry->rec_len = rec_len; 72ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentry->name_len = name_len; 73ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentry->file_type = file_type; 74ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross memcpy(dentry->name, name, name_len); 75ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 76ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross *offset += rec_len; 77ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return dentry; 78ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 79ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 80ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross/* Creates a directory structure for an array of directory entries, dentries, 81ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross and stores the location of the structure in an inode. The new inode's 82ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross .. link is set to dir_inode_num. Stores the location of the inode number 83ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross of each directory entry into dentries[i].inode, to be filled in later 84ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross when the inode for the entry is allocated. Returns the inode number of the 85ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross new directory */ 86ec0a2e83dc66d67addeb90e83144187691852a3eColin Crossu32 make_directory(u32 dir_inode_num, u32 entries, struct dentry *dentries, 878aef66d2125af8de7672a12895276802fcc1948fColin Cross u32 dirs) 88ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross{ 89ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross struct ext4_inode *inode; 906bd2b5d80db5630cb73e3e5a4be3b38afa241c5aColin Cross u32 blocks; 916bd2b5d80db5630cb73e3e5a4be3b38afa241c5aColin Cross u32 len; 92ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 offset = 0; 93ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 inode_num; 94ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u8 *data; 95ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross unsigned int i; 96ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross struct ext4_dir_entry_2 *dentry; 97ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 986bd2b5d80db5630cb73e3e5a4be3b38afa241c5aColin Cross blocks = DIV_ROUND_UP(dentry_size(entries, dentries), info.block_size); 996bd2b5d80db5630cb73e3e5a4be3b38afa241c5aColin Cross len = blocks * info.block_size; 1006bd2b5d80db5630cb73e3e5a4be3b38afa241c5aColin Cross 101ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (dir_inode_num) { 102ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode_num = allocate_inode(info); 103ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } else { 104ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dir_inode_num = EXT4_ROOT_INO; 105ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode_num = EXT4_ROOT_INO; 106ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 107ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 108ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (inode_num == EXT4_ALLOCATE_FAILED) { 109ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error("failed to allocate inode\n"); 110ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return EXT4_ALLOCATE_FAILED; 111ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 112ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 113ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross add_directory(inode_num); 114ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 115ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode = get_inode(inode_num); 116ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (inode == NULL) { 117ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error("failed to get inode %u", inode_num); 118ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return EXT4_ALLOCATE_FAILED; 119ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 120ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 121ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross data = inode_allocate_data_extents(inode, len, len); 122ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (data == NULL) { 1232e905e5f2a3df605c68cb8633580c918e9f4ba71Colin Cross error("failed to allocate %u extents", len); 124ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return EXT4_ALLOCATE_FAILED; 125ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 126ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 127ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode->i_mode = S_IFDIR; 128ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode->i_links_count = dirs + 2; 129ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode->i_flags |= aux_info.default_i_flags; 130ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 131ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentry = NULL; 132ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 133ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentry = add_dentry(data, &offset, NULL, inode_num, ".", EXT4_FT_DIR); 134ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (!dentry) { 135ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error("failed to add . directory"); 136ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return EXT4_ALLOCATE_FAILED; 137ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 138ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 139ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentry = add_dentry(data, &offset, dentry, dir_inode_num, "..", EXT4_FT_DIR); 140ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (!dentry) { 141ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error("failed to add .. directory"); 142ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return EXT4_ALLOCATE_FAILED; 143ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 144ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 145ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross for (i = 0; i < entries; i++) { 1466bd2b5d80db5630cb73e3e5a4be3b38afa241c5aColin Cross dentry = add_dentry(data, &offset, dentry, 0, 1476bd2b5d80db5630cb73e3e5a4be3b38afa241c5aColin Cross dentries[i].filename, dentries[i].file_type); 1486bd2b5d80db5630cb73e3e5a4be3b38afa241c5aColin Cross if (offset > len || (offset == len && i != entries - 1)) 1496bd2b5d80db5630cb73e3e5a4be3b38afa241c5aColin Cross critical_error("internal error: dentry for %s ends at %d, past %d\n", 1506bd2b5d80db5630cb73e3e5a4be3b38afa241c5aColin Cross dentries[i].filename, offset, len); 151ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentries[i].inode = &dentry->inode; 152ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (!dentry) { 153ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error("failed to add directory"); 154ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return EXT4_ALLOCATE_FAILED; 155ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 156ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 157ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 158ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentry = (struct ext4_dir_entry_2 *)(data + offset); 159ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentry->inode = 0; 160ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentry->rec_len = len - offset; 161ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentry->name_len = 0; 162ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross dentry->file_type = EXT4_FT_UNKNOWN; 163ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 164ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return inode_num; 165ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 166ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 167ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross/* Creates a file on disk. Returns the inode number of the new file */ 168ec0a2e83dc66d67addeb90e83144187691852a3eColin Crossu32 make_file(const char *filename, u64 len) 169ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross{ 170ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross struct ext4_inode *inode; 171ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 inode_num; 172ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 173ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode_num = allocate_inode(info); 174ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (inode_num == EXT4_ALLOCATE_FAILED) { 175ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error("failed to allocate inode\n"); 176ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return EXT4_ALLOCATE_FAILED; 177ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 178ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 179ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode = get_inode(inode_num); 180ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (inode == NULL) { 181ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error("failed to get inode %u", inode_num); 182ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return EXT4_ALLOCATE_FAILED; 183ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 184ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 185cf5c39c1851f8826264822414dbab31c1aeaeec6Colin Cross if (len > 0) 186cf5c39c1851f8826264822414dbab31c1aeaeec6Colin Cross inode_allocate_file_extents(inode, len, filename); 187ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 188ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode->i_mode = S_IFREG; 189ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode->i_links_count = 1; 190ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode->i_flags |= aux_info.default_i_flags; 191ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 192ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return inode_num; 193ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 194ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 195ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross/* Creates a file on disk. Returns the inode number of the new file */ 196ec0a2e83dc66d67addeb90e83144187691852a3eColin Crossu32 make_link(const char *filename, const char *link) 197ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross{ 198ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross struct ext4_inode *inode; 199ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 inode_num; 200ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u32 len = strlen(link); 201ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 202ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode_num = allocate_inode(info); 203ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (inode_num == EXT4_ALLOCATE_FAILED) { 204ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error("failed to allocate inode\n"); 205ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return EXT4_ALLOCATE_FAILED; 206ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 207ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 208ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode = get_inode(inode_num); 209ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (inode == NULL) { 210ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross error("failed to get inode %u", inode_num); 211ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return EXT4_ALLOCATE_FAILED; 212ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 213ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 214ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode->i_mode = S_IFLNK; 215ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode->i_links_count = 1; 216ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode->i_flags |= aux_info.default_i_flags; 217ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode->i_size_lo = len; 218ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 219ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (len + 1 <= sizeof(inode->i_block)) { 220ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross /* Fast symlink */ 221ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross memcpy((char*)inode->i_block, link, len); 222ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } else { 223ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross u8 *data = inode_allocate_data_indirect(inode, info.block_size, info.block_size); 224ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross memcpy(data, link, len); 225ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode->i_blocks_lo = info.block_size / 512; 226ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross } 227ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 228ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return inode_num; 229ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 230ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 231de61f980c7b034eefac6e0ace718b3c1eb3f6252Colin Crossint inode_set_permissions(u32 inode_num, u16 mode, u16 uid, u16 gid, u32 mtime) 232ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross{ 233ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross struct ext4_inode *inode = get_inode(inode_num); 234ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 235ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross if (!inode) 236ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return -1; 237ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 238ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode->i_mode |= mode; 239ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode->i_uid = uid; 240ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross inode->i_gid = gid; 241de61f980c7b034eefac6e0ace718b3c1eb3f6252Colin Cross inode->i_mtime = mtime; 242de61f980c7b034eefac6e0ace718b3c1eb3f6252Colin Cross inode->i_atime = mtime; 243de61f980c7b034eefac6e0ace718b3c1eb3f6252Colin Cross inode->i_ctime = mtime; 244ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross 245ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross return 0; 246ec0a2e83dc66d67addeb90e83144187691852a3eColin Cross} 247