1997-04-30 01:26:48 +04:00
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/*
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* dupfs.c --- duplicate a ext2 filesystem handle
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2008-08-28 07:07:54 +04:00
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*
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2005-01-05 11:16:09 +03:00
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* Copyright (C) 1997, 1998, 2001, 2003, 2005 by Theodore Ts'o.
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1997-04-30 01:26:48 +04:00
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*
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* %Begin-Header%
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2010-05-18 05:31:56 +04:00
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* This file may be redistributed under the terms of the GNU Library
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* General Public License, version 2.
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1997-04-30 01:26:48 +04:00
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* %End-Header%
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*/
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2011-09-19 01:34:37 +04:00
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#include "config.h"
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1997-04-30 01:26:48 +04:00
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#include <stdio.h>
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1997-08-11 03:07:40 +04:00
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#if HAVE_UNISTD_H
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1997-04-30 01:26:48 +04:00
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#include <unistd.h>
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1997-08-11 03:07:40 +04:00
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#endif
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1997-04-30 01:26:48 +04:00
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#include <time.h>
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#include <string.h>
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Many files:
inode.c (ext2fs_open_inode_scan): Initialize the group variables
so that we don't need to call get_next_blockgroup() the first
time around. Saves a bit of time, and prevents us from
needing to assign -1 to current_group (which is an unsigned
value).
icount.c (insert_icount_el): Cast the estimated number of inodes
from a float to an ino_t.
alloc.c, alloc_tables.c, badlbocks.c, bb_compat.c, bb_inode.c,
bitmaps.c, bitops.c, block.c, bmap.c, bmove.c, brel_ma.c,
check_desc.c, closefs.c, cmp_bitmaps.c, dblist.c,
dblist_dir.c, dir_iterate.c, dirblock.c, dupfs.c, expanddir.c,
ext2fs.h, fileio.c, freefs.c, get_pathname.c, getsize.c,
icount.c, initialize.c, inline.c, inode.c, irel_ma.c,
ismounted.c, link.c, lookup.c, mkdir.c, namei.c, native.c,
newdir.c, openfs.c, read_bb.c, read_bb_file.c, rs_bitmap.c,
rw_bitmaps.c, swapfs.c, test_io.c, tst_badblocks.c,
tst_getsize.c, tst_iscan.c, unix_io.c, unlink.c, valid_blk.c,
version.c: If EXT2_FLAT_INCLUDES is defined, then assume all
of the ext2-specific header files are in a flat directory.
block.c, bmove.c, dirblock.c, fileio.c: Explicitly cast
all assignments from void * to be compatible with C++.
closefs.c (ext2fs_flush): Add a call to io_channel_flush() to
make sure the contents of the disk are flushed to disk.
dblist.c (ext2fs_add_dir_block): Change new to be new_entry to
avoid C++ namespace clash.
bitmaps.c (ext2fs_copy_bitmap): Change new to be new_map to
avoid C++ namespace clash.
ext2fs.h, bb_inode.c, block.c, bmove.c, brel.h, brel_ma.c,
irel.h, irel_ma.c, dblist.c, dblist_dir.c, dir_iterate.c,
ext2fsP.h, expanddir.c, get_pathname.c, inode.c, link.c,
unlink.c: Change private to be priv_data (to avoid C++
namespace clash)
1998-01-19 17:47:53 +03:00
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#include "ext2_fs.h"
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1997-04-30 01:26:48 +04:00
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#include "ext2fsP.h"
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errcode_t ext2fs_dup_handle(ext2_filsys src, ext2_filsys *dest)
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{
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ext2_filsys fs;
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errcode_t retval;
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EXT2_CHECK_MAGIC(src, EXT2_ET_MAGIC_EXT2FS_FILSYS);
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2008-08-28 07:07:54 +04:00
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2003-08-01 17:41:07 +04:00
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retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &fs);
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1997-10-26 06:41:24 +03:00
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if (retval)
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return retval;
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1997-04-30 01:26:48 +04:00
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*fs = *src;
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fs->device_name = 0;
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fs->super = 0;
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2005-01-05 11:16:09 +03:00
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fs->orig_super = 0;
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1997-04-30 01:26:48 +04:00
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fs->group_desc = 0;
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fs->inode_map = 0;
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fs->block_map = 0;
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fs->badblocks = 0;
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fs->dblist = 0;
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2013-09-09 18:39:29 +04:00
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fs->mmp_buf = 0;
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fs->mmp_cmp = 0;
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fs->mmp_fd = -1;
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1997-04-30 01:26:48 +04:00
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io_channel_bumpcount(fs->io);
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if (fs->icache)
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fs->icache->refcount++;
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2003-08-01 17:41:07 +04:00
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retval = ext2fs_get_mem(strlen(src->device_name)+1, &fs->device_name);
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1997-10-26 06:41:24 +03:00
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if (retval)
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1997-04-30 01:26:48 +04:00
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goto errout;
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strcpy(fs->device_name, src->device_name);
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2003-08-01 17:41:07 +04:00
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retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->super);
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1997-10-26 06:41:24 +03:00
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if (retval)
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1997-04-30 01:26:48 +04:00
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goto errout;
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memcpy(fs->super, src->super, SUPERBLOCK_SIZE);
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2005-01-05 11:16:09 +03:00
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retval = ext2fs_get_mem(SUPERBLOCK_SIZE, &fs->orig_super);
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if (retval)
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goto errout;
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memcpy(fs->orig_super, src->orig_super, SUPERBLOCK_SIZE);
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2007-11-10 03:01:06 +03:00
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retval = ext2fs_get_array(fs->desc_blocks, fs->blocksize,
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2003-08-01 17:41:07 +04:00
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&fs->group_desc);
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1997-10-26 06:41:24 +03:00
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if (retval)
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1997-04-30 01:26:48 +04:00
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goto errout;
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memcpy(fs->group_desc, src->group_desc,
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Many files:
dosio.c: New file to do DOS/BIOS disk accesses.
namei.c (open_namei): Make pathlen be of type size_t.
llseek.c: Always #include stdlib.h since it's need to define
size_t.
io.h: Use errcode_t for magic numbers.
icount.c (get_icount_el), dupfs.c (ext2fs_dup_handle), dblist.c
(dir_block_cmp): Use size_t where appropriate.
read_bb.c (ext2fs_read_bb_inode), cmp_bitmaps.c
(ext2fs_compare_inode_bitmap): Use blk_t, ino_t and size_t
where appropriate.
closefs.c (ext2fs_flush): Use dgrp_t instead of int where
appropriate.
openfs.c (ext2fs_open), check_desc.c (ext2fs_check_desc): Use blk_t
instead of int where appropriate.
rw_bitmaps.c (read_bitmaps), irel_ma.c, inode.c (ext2fs_write_inode),
initialize.c (ext2fs_initialize): brel_ma.c: Fix to make be
16-bit safe.
link.c (ext2fs_link), unlink.c (ext2fs_unlink), lookup.c (lookup_proc),
ismounted.c (ext2fs_check_if_mounted), block.c (xlate_func):
Add #pragma argsused for Turbo C.
1997-08-12 00:29:22 +04:00
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(size_t) fs->desc_blocks * fs->blocksize);
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1997-04-30 01:26:48 +04:00
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if (src->inode_map) {
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retval = ext2fs_copy_bitmap(src->inode_map, &fs->inode_map);
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if (retval)
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goto errout;
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}
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if (src->block_map) {
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retval = ext2fs_copy_bitmap(src->block_map, &fs->block_map);
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if (retval)
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goto errout;
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}
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if (src->badblocks) {
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retval = ext2fs_badblocks_copy(src->badblocks, &fs->badblocks);
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if (retval)
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goto errout;
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}
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if (src->dblist) {
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retval = ext2fs_copy_dblist(src->dblist, &fs->dblist);
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if (retval)
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goto errout;
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}
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2013-09-09 18:39:29 +04:00
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if (src->mmp_buf) {
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retval = ext2fs_get_mem(src->blocksize, &fs->mmp_buf);
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if (retval)
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goto errout;
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memcpy(fs->mmp_buf, src->mmp_buf, src->blocksize);
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}
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if (src->mmp_fd >= 0) {
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fs->mmp_fd = dup(src->mmp_fd);
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if (fs->mmp_fd < 0) {
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retval = EXT2_ET_MMP_OPEN_DIRECT;
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goto errout;
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}
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}
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if (src->mmp_cmp) {
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int align = ext2fs_get_dio_alignment(src->mmp_fd);
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retval = ext2fs_get_memalign(src->blocksize, align,
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&fs->mmp_cmp);
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if (retval)
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goto errout;
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memcpy(fs->mmp_cmp, src->mmp_cmp, src->blocksize);
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}
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1997-04-30 01:26:48 +04:00
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*dest = fs;
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return 0;
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errout:
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ext2fs_free(fs);
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return retval;
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2008-08-28 07:07:54 +04:00
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1997-04-30 01:26:48 +04:00
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}
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