From ce193f809b32368796a3aacf2ac8ba277f4c102a Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Sun, 19 Jul 2015 23:12:51 +0200 Subject: Remove old_e2fsprogs/* Signed-off-by: Denys Vlasenko --- e2fsprogs/old_e2fsprogs/ext2fs/openfs.c | 330 -------------------------------- 1 file changed, 330 deletions(-) delete mode 100644 e2fsprogs/old_e2fsprogs/ext2fs/openfs.c (limited to 'e2fsprogs/old_e2fsprogs/ext2fs/openfs.c') diff --git a/e2fsprogs/old_e2fsprogs/ext2fs/openfs.c b/e2fsprogs/old_e2fsprogs/ext2fs/openfs.c deleted file mode 100644 index 1b271196b..000000000 --- a/e2fsprogs/old_e2fsprogs/ext2fs/openfs.c +++ /dev/null @@ -1,330 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * openfs.c --- open an ext2 filesystem - * - * 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 -#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" -#include "e2image.h" - -blk_t ext2fs_descriptor_block_loc(ext2_filsys fs, blk_t group_block, dgrp_t i) -{ - int bg; - int has_super = 0; - int ret_blk; - - if (!(fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG) || - (i < fs->super->s_first_meta_bg)) - return (group_block + i + 1); - - bg = (fs->blocksize / sizeof (struct ext2_group_desc)) * i; - if (ext2fs_bg_has_super(fs, bg)) - has_super = 1; - ret_blk = (fs->super->s_first_data_block + has_super + - (bg * fs->super->s_blocks_per_group)); - /* - * If group_block is not the normal value, we're trying to use - * the backup group descriptors and superblock --- so use the - * alternate location of the second block group in the - * metablock group. Ideally we should be testing each bg - * descriptor block individually for correctness, but we don't - * have the infrastructure in place to do that. - */ - if (group_block != fs->super->s_first_data_block && - ((ret_blk + fs->super->s_blocks_per_group) < - fs->super->s_blocks_count)) - ret_blk += fs->super->s_blocks_per_group; - return ret_blk; -} - -errcode_t ext2fs_open(const char *name, int flags, int superblock, - unsigned int block_size, io_manager manager, - ext2_filsys *ret_fs) -{ - return ext2fs_open2(name, 0, flags, superblock, block_size, - manager, ret_fs); -} - -/* - * Note: if superblock is non-zero, block-size must also be non-zero. - * Superblock and block_size can be zero to use the default size. - * - * Valid flags for ext2fs_open() - * - * EXT2_FLAG_RW - Open the filesystem for read/write. - * EXT2_FLAG_FORCE - Open the filesystem even if some of the - * features aren't supported. - * EXT2_FLAG_JOURNAL_DEV_OK - Open an ext3 journal device - */ -errcode_t ext2fs_open2(const char *name, const char *io_options, - int flags, int superblock, - unsigned int block_size, io_manager manager, - ext2_filsys *ret_fs) -{ - ext2_filsys fs; - errcode_t retval; - unsigned long i; - int groups_per_block, blocks_per_group; - blk_t group_block, blk; - char *dest, *cp; -#if BB_BIG_ENDIAN - int j; - struct ext2_group_desc *gdp; -#endif - - EXT2_CHECK_MAGIC(manager, EXT2_ET_MAGIC_IO_MANAGER); - - retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &fs); - if (retval) - return retval; - - memset(fs, 0, sizeof(struct struct_ext2_filsys)); - fs->magic = EXT2_ET_MAGIC_EXT2FS_FILSYS; - fs->flags = flags; - fs->umask = 022; - retval = ext2fs_get_mem(strlen(name)+1, &fs->device_name); - if (retval) - goto cleanup; - strcpy(fs->device_name, name); - cp = strchr(fs->device_name, '?'); - if (!io_options && cp) { - *cp++ = 0; - io_options = cp; - } - - retval = manager->open(fs->device_name, - (flags & EXT2_FLAG_RW) ? IO_FLAG_RW : 0, - &fs->io); - if (retval) - goto cleanup; - if (io_options && - (retval = io_channel_set_options(fs->io, io_options))) - goto cleanup; - fs->image_io = fs->io; - fs->io->app_data = fs; - retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->super); - if (retval) - goto cleanup; - if (flags & EXT2_FLAG_IMAGE_FILE) { - retval = ext2fs_get_mem(sizeof(struct ext2_image_hdr), - &fs->image_header); - if (retval) - goto cleanup; - retval = io_channel_read_blk(fs->io, 0, - -(int)sizeof(struct ext2_image_hdr), - fs->image_header); - if (retval) - goto cleanup; - if (fs->image_header->magic_number != EXT2_ET_MAGIC_E2IMAGE) - return EXT2_ET_MAGIC_E2IMAGE; - superblock = 1; - block_size = fs->image_header->fs_blocksize; - } - - /* - * If the user specifies a specific block # for the - * superblock, then he/she must also specify the block size! - * Otherwise, read the master superblock located at offset - * SUPERBLOCK_OFFSET from the start of the partition. - * - * Note: we only save a backup copy of the superblock if we - * are reading the superblock from the primary superblock location. - */ - if (superblock) { - if (!block_size) { - retval = EXT2_ET_INVALID_ARGUMENT; - goto cleanup; - } - io_channel_set_blksize(fs->io, block_size); - group_block = superblock; - fs->orig_super = 0; - } else { - io_channel_set_blksize(fs->io, SUPERBLOCK_OFFSET); - superblock = 1; - group_block = 0; - retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->orig_super); - if (retval) - goto cleanup; - } - retval = io_channel_read_blk(fs->io, superblock, -SUPERBLOCK_SIZE, - fs->super); - if (retval) - goto cleanup; - if (fs->orig_super) - memcpy(fs->orig_super, fs->super, SUPERBLOCK_SIZE); - -#if BB_BIG_ENDIAN - if ((fs->super->s_magic == ext2fs_swab16(EXT2_SUPER_MAGIC)) || - (fs->flags & EXT2_FLAG_SWAP_BYTES)) { - fs->flags |= EXT2_FLAG_SWAP_BYTES; - - ext2fs_swap_super(fs->super); - } -#endif - - if (fs->super->s_magic != EXT2_SUPER_MAGIC) { - retval = EXT2_ET_BAD_MAGIC; - goto cleanup; - } - if (fs->super->s_rev_level > EXT2_LIB_CURRENT_REV) { - retval = EXT2_ET_REV_TOO_HIGH; - goto cleanup; - } - - /* - * Check for feature set incompatibility - */ - if (!(flags & EXT2_FLAG_FORCE)) { - if (fs->super->s_feature_incompat & - ~EXT2_LIB_FEATURE_INCOMPAT_SUPP) { - retval = EXT2_ET_UNSUPP_FEATURE; - goto cleanup; - } - if ((flags & EXT2_FLAG_RW) && - (fs->super->s_feature_ro_compat & - ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP)) { - retval = EXT2_ET_RO_UNSUPP_FEATURE; - goto cleanup; - } - if (!(flags & EXT2_FLAG_JOURNAL_DEV_OK) && - (fs->super->s_feature_incompat & - EXT3_FEATURE_INCOMPAT_JOURNAL_DEV)) { - retval = EXT2_ET_UNSUPP_FEATURE; - goto cleanup; - } - } - - fs->blocksize = EXT2_BLOCK_SIZE(fs->super); - if (fs->blocksize == 0) { - retval = EXT2_ET_CORRUPT_SUPERBLOCK; - goto cleanup; - } - fs->fragsize = EXT2_FRAG_SIZE(fs->super); - fs->inode_blocks_per_group = ((fs->super->s_inodes_per_group * - EXT2_INODE_SIZE(fs->super) + - EXT2_BLOCK_SIZE(fs->super) - 1) / - EXT2_BLOCK_SIZE(fs->super)); - if (block_size) { - if (block_size != fs->blocksize) { - retval = EXT2_ET_UNEXPECTED_BLOCK_SIZE; - goto cleanup; - } - } - /* - * Set the blocksize to the filesystem's blocksize. - */ - io_channel_set_blksize(fs->io, fs->blocksize); - - /* - * If this is an external journal device, don't try to read - * the group descriptors, because they're not there. - */ - if (fs->super->s_feature_incompat & - EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) { - fs->group_desc_count = 0; - *ret_fs = fs; - return 0; - } - - /* - * Read group descriptors - */ - blocks_per_group = EXT2_BLOCKS_PER_GROUP(fs->super); - if (blocks_per_group == 0 || - blocks_per_group > EXT2_MAX_BLOCKS_PER_GROUP(fs->super) || - fs->inode_blocks_per_group > EXT2_MAX_INODES_PER_GROUP(fs->super)) { - retval = EXT2_ET_CORRUPT_SUPERBLOCK; - goto cleanup; - } - fs->group_desc_count = (fs->super->s_blocks_count - - fs->super->s_first_data_block + - blocks_per_group - 1) / blocks_per_group; - fs->desc_blocks = (fs->group_desc_count + - EXT2_DESC_PER_BLOCK(fs->super) - 1) - / EXT2_DESC_PER_BLOCK(fs->super); - retval = ext2fs_get_mem(fs->desc_blocks * fs->blocksize, - &fs->group_desc); - if (retval) - goto cleanup; - if (!group_block) - group_block = fs->super->s_first_data_block; - dest = (char *) fs->group_desc; - groups_per_block = fs->blocksize / sizeof(struct ext2_group_desc); - for (i = 0; i < fs->desc_blocks; i++) { - blk = ext2fs_descriptor_block_loc(fs, group_block, i); - retval = io_channel_read_blk(fs->io, blk, 1, dest); - if (retval) - goto cleanup; -#if BB_BIG_ENDIAN - if (fs->flags & EXT2_FLAG_SWAP_BYTES) { - gdp = (struct ext2_group_desc *) dest; - for (j=0; j < groups_per_block; j++) - ext2fs_swap_group_desc(gdp++); - } -#endif - dest += fs->blocksize; - } - - *ret_fs = fs; - return 0; -cleanup: - ext2fs_free(fs); - return retval; -} - -/* - * Set/get the filesystem data I/O channel. - * - * These functions are only valid if EXT2_FLAG_IMAGE_FILE is true. - */ -errcode_t ext2fs_get_data_io(ext2_filsys fs, io_channel *old_io) -{ - if ((fs->flags & EXT2_FLAG_IMAGE_FILE) == 0) - return EXT2_ET_NOT_IMAGE_FILE; - if (old_io) { - *old_io = (fs->image_io == fs->io) ? 0 : fs->io; - } - return 0; -} - -errcode_t ext2fs_set_data_io(ext2_filsys fs, io_channel new_io) -{ - if ((fs->flags & EXT2_FLAG_IMAGE_FILE) == 0) - return EXT2_ET_NOT_IMAGE_FILE; - fs->io = new_io ? new_io : fs->image_io; - return 0; -} - -errcode_t ext2fs_rewrite_to_io(ext2_filsys fs, io_channel new_io) -{ - if ((fs->flags & EXT2_FLAG_IMAGE_FILE) == 0) - return EXT2_ET_NOT_IMAGE_FILE; - fs->io = fs->image_io = new_io; - fs->flags |= EXT2_FLAG_DIRTY | EXT2_FLAG_RW | - EXT2_FLAG_BB_DIRTY | EXT2_FLAG_IB_DIRTY; - fs->flags &= ~EXT2_FLAG_IMAGE_FILE; - return 0; -} -- cgit v1.2.3