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/initialize.c | 326 --------------------------------------------------- 1 file changed, 326 deletions(-) delete mode 100644 e2fslib/initialize.c (limited to 'e2fslib/initialize.c') diff --git a/e2fslib/initialize.c b/e2fslib/initialize.c deleted file mode 100644 index 821036e..0000000 --- a/e2fslib/initialize.c +++ /dev/null @@ -1,326 +0,0 @@ -/* - * initialize.c --- initialize a filesystem handle given superblock - * parameters. Used by mke2fs when initializing a filesystem. - * - * Copyright (C) 1994, 1995, 1996 Theodore Ts'o. - * - * %Begin-Header% - * This file may be redistributed under the terms of the GNU Public - * License. - * %End-Header% - */ - -#include -#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" - -#if defined(__linux__) && defined(EXT2_OS_LINUX) -#define CREATOR_OS EXT2_OS_LINUX -#elif defined(__GNU__) && defined(EXT2_OS_HURD) -#define CREATOR_OS EXT2_OS_HURD -#elif defined(__FreeBSD__) && defined(EXT2_OS_FREEBSD) -#define CREATOR_OS EXT2_OS_FREEBSD -#elif defined(LITES) && defined(EXT2_OS_LITES) -#define CREATOR_OS EXT2_OS_LITES -#else -#define CREATOR_OS EXT2_OS_LINUX /* by default */ -#endif - -/* - * Note we override the kernel include file's idea of what the default - * check interval (never) should be. It's a good idea to check at - * least *occasionally*, specially since servers will never rarely get - * to reboot, since Linux is so robust these days. :-) - * - * 180 days (six months) seems like a good value. - */ -#ifdef EXT2_DFL_CHECKINTERVAL -#undef EXT2_DFL_CHECKINTERVAL -#endif -#define EXT2_DFL_CHECKINTERVAL (86400L * 180L) - -errcode_t ext2fs_initialize(const char *name, int flags, - struct ext2_super_block *param, - io_manager manager, ext2_filsys *ret_fs) -{ - ext2_filsys fs; - errcode_t retval; - struct ext2_super_block *super; - int frags_per_block; - int rem; - int overhead = 0; - blk_t group_block; - int i, j; - blk_t numblocks; - char *buf; - - if (!param || !param->s_blocks_count) - return EXT2_ET_INVALID_ARGUMENT; - - retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), - (void **) &fs); - if (retval) - return retval; - - memset(fs, 0, sizeof(struct struct_ext2_filsys)); - fs->magic = EXT2_ET_MAGIC_EXT2FS_FILSYS; - fs->flags = flags | EXT2_FLAG_RW; -#ifdef WORDS_BIGENDIAN - fs->flags |= EXT2_FLAG_SWAP_BYTES; -#endif - retval = manager->open(name, IO_FLAG_RW, &fs->io); - if (retval) - goto cleanup; - fs->io->app_data = fs; - retval = ext2fs_get_mem(strlen(name)+1, (void **) &fs->device_name); - if (retval) - goto cleanup; - - strcpy(fs->device_name, name); - retval = ext2fs_get_mem(SUPERBLOCK_SIZE, (void **) &super); - if (retval) - goto cleanup; - fs->super = super; - - memset(super, 0, SUPERBLOCK_SIZE); - -#define set_field(field, default) (super->field = param->field ? \ - param->field : (default)) - - super->s_magic = EXT2_SUPER_MAGIC; - super->s_state = EXT2_VALID_FS; - - set_field(s_log_block_size, 0); /* default blocksize: 1024 bytes */ - set_field(s_log_frag_size, 0); /* default fragsize: 1024 bytes */ - set_field(s_first_data_block, super->s_log_block_size ? 0 : 1); - set_field(s_max_mnt_count, EXT2_DFL_MAX_MNT_COUNT); - set_field(s_errors, EXT2_ERRORS_DEFAULT); - set_field(s_feature_compat, 0); - set_field(s_feature_incompat, 0); - set_field(s_feature_ro_compat, 0); - if (super->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP) - return EXT2_ET_UNSUPP_FEATURE; - if (super->s_feature_ro_compat & ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP) - return EXT2_ET_RO_UNSUPP_FEATURE; - - set_field(s_rev_level, EXT2_GOOD_OLD_REV); - if (super->s_rev_level >= EXT2_DYNAMIC_REV) { - set_field(s_first_ino, EXT2_GOOD_OLD_FIRST_INO); - set_field(s_inode_size, EXT2_GOOD_OLD_INODE_SIZE); - } - - set_field(s_checkinterval, EXT2_DFL_CHECKINTERVAL); - super->s_lastcheck = time(NULL); - - super->s_creator_os = CREATOR_OS; - - fs->blocksize = EXT2_BLOCK_SIZE(super); - fs->fragsize = EXT2_FRAG_SIZE(super); - frags_per_block = fs->blocksize / fs->fragsize; - - /* default: (fs->blocksize*8) blocks/group */ - set_field(s_blocks_per_group, fs->blocksize*8); - super->s_frags_per_group = super->s_blocks_per_group * frags_per_block; - - super->s_blocks_count = param->s_blocks_count; - super->s_r_blocks_count = param->s_r_blocks_count; - if (super->s_r_blocks_count >= param->s_blocks_count) { - retval = EXT2_ET_INVALID_ARGUMENT; - goto cleanup; - } - - /* - * If we're creating an external journal device, we don't need - * to bother with the rest. - */ - if (super->s_feature_incompat & - EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { - fs->group_desc_count = 0; - ext2fs_mark_super_dirty(fs); - *ret_fs = fs; - return 0; - } - -retry: - fs->group_desc_count = (super->s_blocks_count - - super->s_first_data_block + - EXT2_BLOCKS_PER_GROUP(super) - 1) - / EXT2_BLOCKS_PER_GROUP(super); - if (fs->group_desc_count == 0) - return EXT2_ET_TOOSMALL; - fs->desc_blocks = (fs->group_desc_count + - EXT2_DESC_PER_BLOCK(super) - 1) - / EXT2_DESC_PER_BLOCK(super); - - /* n.b., fs->blocksize is <= 4096 */ - set_field(s_inodes_count, super->s_blocks_count/(4096/fs->blocksize)); - - /* - * Make sure we have at least EXT2_FIRST_INO + 1 inodes, so - * that we have enough inodes for the filesystem(!) - */ - if (super->s_inodes_count < EXT2_FIRST_INODE(super)+1) - super->s_inodes_count = EXT2_FIRST_INODE(super)+1; - - /* - * There should be at least as many inodes as the user - * requested. Figure out how many inodes per group that - * should be. But make sure that we don't allocate more than - * one bitmap's worth of inodes - */ - super->s_inodes_per_group = (super->s_inodes_count + - fs->group_desc_count - 1) / - fs->group_desc_count; - if (super->s_inodes_per_group > fs->blocksize*8) - super->s_inodes_per_group = fs->blocksize*8; - - /* - * Make sure the number of inodes per group completely fills - * the inode table blocks in the descriptor. If not, add some - * additional inodes/group. Waste not, want not... - */ - fs->inode_blocks_per_group = (((super->s_inodes_per_group * - EXT2_INODE_SIZE(super)) + - EXT2_BLOCK_SIZE(super) - 1) / - EXT2_BLOCK_SIZE(super)); - super->s_inodes_per_group = ((fs->inode_blocks_per_group * - EXT2_BLOCK_SIZE(super)) / - EXT2_INODE_SIZE(super)); - /* - * Finally, make sure the number of inodes per group is a - * multiple of 8. This is needed to simplify the bitmap - * splicing code. - */ - super->s_inodes_per_group &= ~7; - fs->inode_blocks_per_group = (((super->s_inodes_per_group * - EXT2_INODE_SIZE(super)) + - EXT2_BLOCK_SIZE(super) - 1) / - EXT2_BLOCK_SIZE(super)); - - /* - * adjust inode count to reflect the adjusted inodes_per_group - */ - super->s_inodes_count = super->s_inodes_per_group * - fs->group_desc_count; - super->s_free_inodes_count = super->s_inodes_count; - - /* - * Overhead is the number of bookkeeping blocks per group. It - * includes the superblock backup, the group descriptor - * backups, the inode bitmap, the block bitmap, and the inode - * table. - * - * XXX Not all block groups need the descriptor blocks, but - * being clever is tricky... - */ - overhead = (int) (3 + fs->desc_blocks + fs->inode_blocks_per_group); - - /* - * See if the last group is big enough to support the - * necessary data structures. If not, we need to get rid of - * it. - */ - rem = (int) ((super->s_blocks_count - super->s_first_data_block) % - super->s_blocks_per_group); - if ((fs->group_desc_count == 1) && rem && (rem < overhead)) - return EXT2_ET_TOOSMALL; - if (rem && (rem < overhead+50)) { - super->s_blocks_count -= rem; - goto retry; - } - - /* - * At this point we know how big the filesystem will be. So - * we can do any and all allocations that depend on the block - * count. - */ - - retval = ext2fs_get_mem(strlen(fs->device_name) + 80, - (void **) &buf); - if (retval) - goto cleanup; - - sprintf(buf, "block bitmap for %s", fs->device_name); - retval = ext2fs_allocate_block_bitmap(fs, buf, &fs->block_map); - if (retval) - goto cleanup; - - sprintf(buf, "inode bitmap for %s", fs->device_name); - retval = ext2fs_allocate_inode_bitmap(fs, buf, &fs->inode_map); - if (retval) - goto cleanup; - - ext2fs_free_mem((void **) &buf); - - retval = ext2fs_get_mem((size_t) fs->desc_blocks * fs->blocksize, - (void **) &fs->group_desc); - if (retval) - goto cleanup; - - memset(fs->group_desc, 0, (size_t) fs->desc_blocks * fs->blocksize); - - /* - * Reserve the superblock and group descriptors for each - * group, and fill in the correct group statistics for group. - * Note that although the block bitmap, inode bitmap, and - * inode table have not been allocated (and in fact won't be - * by this routine), they are accounted for nevertheless. - */ - group_block = super->s_first_data_block; - super->s_free_blocks_count = 0; - for (i = 0; i < fs->group_desc_count; i++) { - if (i == fs->group_desc_count-1) { - numblocks = (fs->super->s_blocks_count - - fs->super->s_first_data_block) % - fs->super->s_blocks_per_group; - if (!numblocks) - numblocks = fs->super->s_blocks_per_group; - } else - numblocks = fs->super->s_blocks_per_group; - - if (ext2fs_bg_has_super(fs, i)) { - for (j=0; j < fs->desc_blocks+1; j++) - ext2fs_mark_block_bitmap(fs->block_map, - group_block + j); - numblocks -= 1 + fs->desc_blocks; - } - - numblocks -= 2 + fs->inode_blocks_per_group; - - super->s_free_blocks_count += numblocks; - fs->group_desc[i].bg_free_blocks_count = numblocks; - fs->group_desc[i].bg_free_inodes_count = - fs->super->s_inodes_per_group; - fs->group_desc[i].bg_used_dirs_count = 0; - - group_block += super->s_blocks_per_group; - } - - ext2fs_mark_super_dirty(fs); - ext2fs_mark_bb_dirty(fs); - ext2fs_mark_ib_dirty(fs); - - io_channel_set_blksize(fs->io, fs->blocksize); - - *ret_fs = fs; - return 0; -cleanup: - ext2fs_free(fs); - return retval; -} - - - -- cgit v1.2.3