| /* |
| * dupfs.c --- duplicate a ext2 filesystem handle |
| * |
| * Copyright (C) 1997 Theodore Ts'o. |
| * |
| * %Begin-Header% |
| * This file may be redistributed under the terms of the GNU Public |
| * License. |
| * %End-Header% |
| */ |
| |
| #include <stdio.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <time.h> |
| #include <string.h> |
| #ifdef HAVE_ERRNO_H |
| #include <errno.h> |
| #endif |
| |
| #include <linux/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); |
| |
| fs = (ext2_filsys) malloc(sizeof(struct struct_ext2_filsys)); |
| if (!fs) |
| return ENOMEM; |
| |
| *fs = *src; |
| fs->device_name = 0; |
| fs->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 = ENOMEM; |
| fs->device_name = malloc(strlen(src->device_name)+1); |
| if (!fs->device_name) |
| goto errout; |
| strcpy(fs->device_name, src->device_name); |
| |
| fs->super = malloc(SUPERBLOCK_SIZE); |
| if (!fs->super) |
| goto errout; |
| memcpy(fs->super, src->super, SUPERBLOCK_SIZE); |
| |
| fs->group_desc = malloc(fs->desc_blocks * fs->blocksize); |
| if (!fs->group_desc) |
| goto errout; |
| memcpy(fs->group_desc, src->group_desc, |
| 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; |
| |
| } |
| |