1/* vi: set sw=4 ts=4: */ 2/* 3 * dupfs.c --- duplicate a ext2 filesystem handle 4 * 5 * Copyright (C) 1997, 1998, 2001, 2003, 2005 by Theodore Ts'o. 6 * 7 * %Begin-Header% 8 * This file may be redistributed under the terms of the GNU Public 9 * License. 10 * %End-Header% 11 */ 12 13#include <stdio.h> 14#if HAVE_UNISTD_H 15#include <unistd.h> 16#endif 17#include <time.h> 18#include <string.h> 19 20#include "ext2_fs.h" 21#include "ext2fsP.h" 22 23errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest) 24{ 25 ext2_filsys fs; 26 errcode_t retval; 27 28 EXT2_CHECK_MAGIC(src, EXT2_ET_MAGIC_EXT2FS_FILSYS); 29 30 retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &fs); 31 if (retval) 32 return retval; 33 34 *fs = *src; 35 fs->device_name = 0; 36 fs->super = 0; 37 fs->orig_super = 0; 38 fs->group_desc = 0; 39 fs->inode_map = 0; 40 fs->block_map = 0; 41 fs->badblocks = 0; 42 fs->dblist = 0; 43 44 io_channel_bumpcount(fs->io); 45 if (fs->icache) 46 fs->icache->refcount++; 47 48 retval = ext2fs_get_mem(strlen(src->device_name)+1, &fs->device_name); 49 if (retval) 50 goto errout; 51 strcpy(fs->device_name, src->device_name); 52 53 retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->super); 54 if (retval) 55 goto errout; 56 memcpy(fs->super, src->super, SUPERBLOCK_SIZE); 57 58 retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->orig_super); 59 if (retval) 60 goto errout; 61 memcpy(fs->orig_super, src->orig_super, SUPERBLOCK_SIZE); 62 63 retval = ext2fs_get_mem((size_t) fs->desc_blocks * fs->blocksize, 64 &fs->group_desc); 65 if (retval) 66 goto errout; 67 memcpy(fs->group_desc, src->group_desc, 68 (size_t) fs->desc_blocks * fs->blocksize); 69 70 if (src->inode_map) { 71 retval = ext2fs_copy_bitmap(src->inode_map, &fs->inode_map); 72 if (retval) 73 goto errout; 74 } 75 if (src->block_map) { 76 retval = ext2fs_copy_bitmap(src->block_map, &fs->block_map); 77 if (retval) 78 goto errout; 79 } 80 if (src->badblocks) { 81 retval = ext2fs_badblocks_copy(src->badblocks, &fs->badblocks); 82 if (retval) 83 goto errout; 84 } 85 if (src->dblist) { 86 retval = ext2fs_copy_dblist(src->dblist, &fs->dblist); 87 if (retval) 88 goto errout; 89 } 90 *dest = fs; 91 return 0; 92errout: 93 ext2fs_free(fs); 94 return retval; 95 96} 97 98