82 void ext2_read_block(ext2_VOLUME* volume, unsigned int fsblock)  in ext2_read_block()  argument
86 	if (fsblock == volume->current)  in ext2_read_block()
89 	volume->current = fsblock;  in ext2_read_block()
90 	offset = fsblock * EXT2_BLOCK_SIZE(volume->super);  in ext2_read_block()
92 	seek_io(volume->fd, offset);  in ext2_read_block()
93 	read_io(volume->fd, volume->buffer, EXT2_BLOCK_SIZE(volume->super));  in ext2_read_block()
96 void ext2_get_group_desc(ext2_VOLUME* volume,  in ext2_get_group_desc()  argument
102 	block = 1 + volume->super->s_first_data_block;  in ext2_get_group_desc()
103 	block += group_id / EXT2_DESC_PER_BLOCK(volume->super);  in ext2_get_group_desc()
104 	ext2_read_block(volume,  block);  in ext2_get_group_desc()
106 	offset = group_id % EXT2_DESC_PER_BLOCK(volume->super);  in ext2_get_group_desc()
109 	le_gdp = (struct ext2_group_desc *)(volume->buffer + offset);  in ext2_get_group_desc()
119 int ext2_get_inode(ext2_VOLUME* volume,  in ext2_get_inode()  argument
131 	group_id = ino / EXT2_INODES_PER_GROUP(volume->super);  in ext2_get_inode()
132 	ext2_get_group_desc(volume, group_id, &desc);  in ext2_get_inode()
134 	ino %= EXT2_INODES_PER_GROUP(volume->super);  in ext2_get_inode()
137 	block += ino / (EXT2_BLOCK_SIZE(volume->super) /  in ext2_get_inode()
138 			EXT2_INODE_SIZE(volume->super));  in ext2_get_inode()
139 	ext2_read_block(volume, block);  in ext2_get_inode()
141 	offset = ino % (EXT2_BLOCK_SIZE(volume->super) /  in ext2_get_inode()
142 			EXT2_INODE_SIZE(volume->super));  in ext2_get_inode()
143 	offset *= EXT2_INODE_SIZE(volume->super);  in ext2_get_inode()
145 	le_inode = (struct ext2_inode *)(volume->buffer + offset);  in ext2_get_inode()
177 unsigned int ext2_get_block_addr(ext2_VOLUME* volume, struct ext2_inode *inode,  in ext2_get_block_addr()  argument
194 	addr_per_block = EXT2_ADDR_PER_BLOCK (volume->super);  in ext2_get_block_addr()
196 		ext2_read_block(volume, inode->i_block[EXT2_IND_BLOCK]);  in ext2_get_block_addr()
197 		physical = __le32_to_cpu(((unsigned int *)volume->buffer)[logical]);  in ext2_get_block_addr()
206 		ext2_read_block(volume, inode->i_block[EXT2_DIND_BLOCK]);  in ext2_get_block_addr()
207 		physical = __le32_to_cpu(((unsigned int *)volume->buffer)  in ext2_get_block_addr()
209 		ext2_read_block(volume, physical);  in ext2_get_block_addr()
210 		physical = __le32_to_cpu(((unsigned int *)volume->buffer)  in ext2_get_block_addr()
218 	ext2_read_block(volume, inode->i_block[EXT2_DIND_BLOCK]);  in ext2_get_block_addr()
219 	physical = __le32_to_cpu(((unsigned int *)volume->buffer)  in ext2_get_block_addr()
221 	ext2_read_block(volume, physical);  in ext2_get_block_addr()
223 	physical = __le32_to_cpu(((unsigned int *)volume->buffer)[logical / addr_per_block]);  in ext2_get_block_addr()
224 	ext2_read_block(volume, physical);  in ext2_get_block_addr()
225 	physical = __le32_to_cpu(((unsigned int *)volume->buffer)[logical % addr_per_block]);  in ext2_get_block_addr()
229 int ext2_read_data(ext2_VOLUME* volume, struct ext2_inode *inode,  in ext2_read_data()  argument
233 	int blocksize = EXT2_BLOCK_SIZE(volume->super);  in ext2_read_data()
248 		physical = ext2_get_block_addr(volume, inode, logical);  in ext2_read_data()
249 		ext2_read_block(volume, physical);  in ext2_read_data()
252 			memcpy(buffer, volume->buffer + shift, length);  in ext2_read_data()
256 		memcpy(buffer, volume->buffer + shift, read);  in ext2_read_data()
264 		physical = ext2_get_block_addr(volume, inode, logical);  in ext2_read_data()
265 		ext2_read_block(volume, physical);  in ext2_read_data()
268 			memcpy(buffer, volume->buffer, length);  in ext2_read_data()
272 		memcpy(buffer, volume->buffer, blocksize);  in ext2_read_data()
283 off_t ext2_dir_entry(ext2_VOLUME *volume, struct ext2_inode *inode,  in ext2_dir_entry()  argument
288 	ret = ext2_read_data(volume, inode, index,  in ext2_dir_entry()
298 unsigned int ext2_seek_name(ext2_VOLUME *volume, const char *name)  in ext2_seek_name()  argument
312 		ret = ext2_get_inode(volume, ino, &inode);  in ext2_seek_name()
317 			index = ext2_dir_entry(volume, &inode, index, &entry);  in ext2_seek_name()