/* vi: set sw=4 ts=4: */ /* * dupfs.c --- duplicate a ext2 filesystem handle * * Copyright (C) 1997, 1998, 2001, 2003, 2005 by Theodore Ts'o. * * %Begin-Header% * This file may be redistributed under the terms of the GNU Public * License. * %End-Header% */ #include <stdio.h> #if HAVE_UNISTD_H #include <unistd.h> #endif #include <time.h> #include <string.h> #include "ext2_fs.h" #include "ext2fsP.h" errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest) { ext2_filsys fs; errcode_t retval; EXT2_CHECK_MAGIC(src, EXT2_ET_MAGIC_EXT2FS_FILSYS); retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &fs); if (retval) return retval; *fs = *src; fs->device_name = 0; fs->super = 0; fs->orig_super = 0; fs->group_desc = 0; fs->inode_map = 0; fs->block_map = 0; fs->badblocks = 0; fs->dblist = 0; io_channel_bumpcount(fs->io); if (fs->icache) fs->icache->refcount++; retval = ext2fs_get_mem(strlen(src->device_name)+1, &fs->device_name); if (retval) goto errout; strcpy(fs->device_name, src->device_name); retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->super); if (retval) goto errout; memcpy(fs->super, src->super, SUPERBLOCK_SIZE); retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->orig_super); if (retval) goto errout; memcpy(fs->orig_super, src->orig_super, SUPERBLOCK_SIZE); retval = ext2fs_get_mem((size_t) fs->desc_blocks * fs->blocksize, &fs->group_desc); if (retval) goto errout; memcpy(fs->group_desc, src->group_desc, (size_t) fs->desc_blocks * fs->blocksize); if (src->inode_map) { retval = ext2fs_copy_bitmap(src->inode_map, &fs->inode_map); if (retval) goto errout; } if (src->block_map) { retval = ext2fs_copy_bitmap(src->block_map, &fs->block_map); if (retval) goto errout; } if (src->badblocks) { retval = ext2fs_badblocks_copy(src->badblocks, &fs->badblocks); if (retval) goto errout; } if (src->dblist) { retval = ext2fs_copy_dblist(src->dblist, &fs->dblist); if (retval) goto errout; } *dest = fs; return 0; errout: ext2fs_free(fs); return retval; }