From 498267851d48ee60376dc96411fb8693a5e95a3c Mon Sep 17 00:00:00 2001 From: Guido Guenther Date: Wed, 21 Nov 2007 16:55:40 +0100 Subject: remove unneeded e2fslib --- e2fslib/alloc.c | 178 -------------------------------------------------------- 1 file changed, 178 deletions(-) delete mode 100644 e2fslib/alloc.c (limited to 'e2fslib/alloc.c') diff --git a/e2fslib/alloc.c b/e2fslib/alloc.c deleted file mode 100644 index 2de05bc..0000000 --- a/e2fslib/alloc.c +++ /dev/null @@ -1,178 +0,0 @@ -/* - * alloc.c --- allocate new inodes, blocks for ext2fs - * - * Copyright (C) 1993, 1994, 1995, 1996 Theodore Ts'o. - * - * %Begin-Header% - * This file may be redistributed under the terms of the GNU Public - * License. - * %End-Header% - * - */ - -#include -#if HAVE_UNISTD_H -#include -#endif -#include -#include -#if HAVE_SYS_STAT_H -#include -#endif -#if HAVE_SYS_TYPES_H -#include -#endif - -#include "ext2_fs.h" -#include "ext2fs.h" - -/* - * Right now, just search forward from the parent directory's block - * group to find the next free inode. - * - * Should have a special policy for directories. - */ -errcode_t ext2fs_new_inode(ext2_filsys fs, ext2_ino_t dir, int mode, - ext2fs_inode_bitmap map, ext2_ino_t *ret) -{ - ext2_ino_t dir_group = 0; - ext2_ino_t i; - ext2_ino_t start_inode; - - EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS); - - if (!map) - map = fs->inode_map; - if (!map) - return EXT2_ET_NO_INODE_BITMAP; - - if (dir > 0) - dir_group = (dir - 1) / EXT2_INODES_PER_GROUP(fs->super); - - start_inode = (dir_group * EXT2_INODES_PER_GROUP(fs->super)) + 1; - if (start_inode < EXT2_FIRST_INODE(fs->super)) - start_inode = EXT2_FIRST_INODE(fs->super); - i = start_inode; - - do { - if (!ext2fs_fast_test_inode_bitmap(map, i)) - break; - i++; - if (i > fs->super->s_inodes_count) - i = EXT2_FIRST_INODE(fs->super); - } while (i != start_inode); - - if (ext2fs_test_inode_bitmap(map, i)) - return EXT2_ET_INODE_ALLOC_FAIL; - *ret = i; - return 0; -} - -/* - * Stupid algorithm --- we now just search forward starting from the - * goal. Should put in a smarter one someday.... - */ -errcode_t ext2fs_new_block(ext2_filsys fs, blk_t goal, - ext2fs_block_bitmap map, blk_t *ret) -{ - blk_t i; - - EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS); - - if (!map) - map = fs->block_map; - if (!map) - return EXT2_ET_NO_BLOCK_BITMAP; - if (!goal || (goal >= fs->super->s_blocks_count)) - goal = fs->super->s_first_data_block; - i = goal; - do { - if (!ext2fs_fast_test_block_bitmap(map, i)) { - *ret = i; - return 0; - } - i++; - if (i >= fs->super->s_blocks_count) - i = fs->super->s_first_data_block; - } while (i != goal); - return EXT2_ET_BLOCK_ALLOC_FAIL; -} - -/* - * This function zeros out the allocated block, and updates all of the - * appropriate filesystem records. - */ -errcode_t ext2fs_alloc_block(ext2_filsys fs, blk_t goal, - char *block_buf, blk_t *ret) -{ - errcode_t retval; - blk_t block; - int group; - char *buf = 0; - - if (!block_buf) { - retval = ext2fs_get_mem(fs->blocksize, (void **) &buf); - if (retval) - return retval; - block_buf = buf; - } - memset(block_buf, 0, fs->blocksize); - - if (!fs->block_map) { - retval = ext2fs_read_block_bitmap(fs); - if (retval) - goto fail; - } - - retval = ext2fs_new_block(fs, goal, 0, &block); - if (retval) - goto fail; - - retval = io_channel_write_blk(fs->io, block, 1, block_buf); - if (retval) - goto fail; - - fs->super->s_free_blocks_count--; - group = ext2fs_group_of_blk(fs, block); - fs->group_desc[group].bg_free_blocks_count--; - ext2fs_mark_block_bitmap(fs->block_map, block); - ext2fs_mark_super_dirty(fs); - ext2fs_mark_bb_dirty(fs); - *ret = block; - return 0; - -fail: - if (buf) - ext2fs_free_mem((void **) &buf); - return retval; -} - -errcode_t ext2fs_get_free_blocks(ext2_filsys fs, blk_t start, blk_t finish, - int num, ext2fs_block_bitmap map, blk_t *ret) -{ - blk_t b = start; - - EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS); - - if (!map) - map = fs->block_map; - if (!map) - return EXT2_ET_NO_BLOCK_BITMAP; - if (!b) - b = fs->super->s_first_data_block; - if (!finish) - finish = start; - if (!num) - num = 1; - do { - if (b+num-1 > fs->super->s_blocks_count) - b = fs->super->s_first_data_block; - if (ext2fs_fast_test_block_bitmap_range(map, b, num)) { - *ret = b; - return 0; - } - b++; - } while (b != finish); - return EXT2_ET_BLOCK_ALLOC_FAIL; -} - -- cgit v1.2.3