1997-04-26 17:21:57 +04:00
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/*
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* expand.c --- expand an ext2fs directory
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2008-08-28 07:07:54 +04:00
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*
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1999-09-15 00:21:26 +04:00
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* Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999 Theodore Ts'o.
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1997-04-29 20:17:09 +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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1997-04-29 20:17:09 +04:00
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* %End-Header%
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1997-04-26 17:21:57 +04:00
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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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1997-04-26 17:21:57 +04:00
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#include <stdio.h>
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#include <string.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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1997-04-26 17:21:57 +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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1997-04-26 17:34:30 +04:00
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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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1997-04-26 17:21:57 +04:00
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#include "ext2fs.h"
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2014-03-14 17:34:10 +04:00
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#include "ext2fsP.h"
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1997-04-26 17:21:57 +04:00
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struct expand_dir_struct {
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1999-09-15 00:21:26 +04:00
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int done;
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int newblocks;
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2011-06-11 02:54:53 +04:00
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blk64_t goal;
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1997-04-26 17:21:57 +04:00
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errcode_t err;
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2012-08-03 01:27:43 +04:00
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ext2_ino_t dir;
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1997-04-26 17:21:57 +04:00
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};
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2003-12-07 09:28:50 +03:00
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static int expand_dir_proc(ext2_filsys fs,
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2010-06-13 19:00:00 +04:00
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blk64_t *blocknr,
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2003-12-07 09:28:50 +03:00
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e2_blkcnt_t blockcnt,
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2010-06-13 19:00:00 +04:00
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blk64_t ref_block EXT2FS_ATTR((unused)),
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2003-12-07 09:28:50 +03:00
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int ref_offset EXT2FS_ATTR((unused)),
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void *priv_data)
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1997-04-26 17:21:57 +04:00
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{
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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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struct expand_dir_struct *es = (struct expand_dir_struct *) priv_data;
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2010-06-13 19:00:00 +04:00
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blk64_t new_blk;
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1997-04-26 17:21:57 +04:00
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char *block;
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errcode_t retval;
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2008-08-28 07:07:54 +04:00
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1997-04-26 17:21:57 +04:00
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if (*blocknr) {
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2011-06-11 02:54:53 +04:00
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if (blockcnt >= 0)
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es->goal = *blocknr;
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1997-04-26 17:21:57 +04:00
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return 0;
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}
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2011-06-11 02:54:53 +04:00
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if (blockcnt &&
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(EXT2FS_B2C(fs, es->goal) == EXT2FS_B2C(fs, es->goal+1)))
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new_blk = es->goal+1;
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else {
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es->goal &= ~EXT2FS_CLUSTER_MASK(fs);
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retval = ext2fs_new_block2(fs, es->goal, 0, &new_blk);
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if (retval) {
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es->err = retval;
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return BLOCK_ABORT;
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}
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2011-06-16 18:12:43 +04:00
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es->newblocks++;
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2013-12-16 08:50:52 +04:00
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ext2fs_block_alloc_stats2(fs, new_blk, +1);
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1997-04-26 17:21:57 +04:00
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}
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if (blockcnt > 0) {
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retval = ext2fs_new_dir_block(fs, 0, 0, &block);
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if (retval) {
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es->err = retval;
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return BLOCK_ABORT;
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}
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es->done = 1;
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2012-08-03 01:27:43 +04:00
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retval = ext2fs_write_dir_block4(fs, new_blk, block, 0,
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es->dir);
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2014-10-13 12:31:17 +04:00
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ext2fs_free_mem(&block);
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} else
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retval = ext2fs_zero_blocks2(fs, new_blk, 1, NULL, NULL);
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2011-06-11 02:54:53 +04:00
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if (blockcnt >= 0)
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es->goal = new_blk;
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1997-04-26 17:21:57 +04:00
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if (retval) {
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es->err = retval;
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return BLOCK_ABORT;
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}
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*blocknr = new_blk;
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1999-09-15 00:21:26 +04:00
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1997-04-26 17:21:57 +04:00
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if (es->done)
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return (BLOCK_CHANGED | BLOCK_ABORT);
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else
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return BLOCK_CHANGED;
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}
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Many files:
alloc.c, bb_inode.c, bitmaps.c, bitops.h, block.c, bmap.c, bmove.c,
brel.h, cmp_bitmaps.c, dblist.c, dblist_dir.c, dir_iterate.c,
expanddir.c, ext2fs.h, ext2fsP.h, fileio.c, finddev.c, get_pathname.c,
icount.c, inode.c, irel.h, irel_ma.c, ismounted.c, link.c, lookup.c,
mkdir.c, mkjournal.c, namei.c, newdir.c, read_bb_file.c, test_io.c,
tst_iscan.c, unix_io.c, unlink.c: Change use of ino_t to ext2_ino_t,
to protect applications that attempt to compile
-D_FILE_OFFSET_BITS=64, since this inexplicably changes ino_t(!?). So
we use ext2_ino_t to avoid an unexpected ABI change.
2001-01-11 07:54:39 +03:00
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errcode_t ext2fs_expand_dir(ext2_filsys fs, ext2_ino_t dir)
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1997-04-26 17:21:57 +04:00
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{
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errcode_t retval;
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struct expand_dir_struct es;
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struct ext2_inode inode;
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2008-08-28 07:07:54 +04:00
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1997-04-26 17:34:30 +04:00
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EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
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1997-04-26 17:21:57 +04:00
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if (!(fs->flags & EXT2_FLAG_RW))
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return EXT2_ET_RO_FILSYS;
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1997-11-24 14:44:25 +03:00
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if (!fs->block_map)
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return EXT2_ET_NO_BLOCK_BITMAP;
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1997-04-26 17:21:57 +04:00
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retval = ext2fs_check_directory(fs, dir);
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if (retval)
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return retval;
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2008-08-28 07:07:54 +04:00
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1997-04-26 17:21:57 +04:00
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es.done = 0;
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es.err = 0;
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2011-06-11 02:54:53 +04:00
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es.goal = 0;
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1999-09-15 00:21:26 +04:00
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es.newblocks = 0;
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2012-08-03 01:27:43 +04:00
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es.dir = dir;
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2008-08-28 07:07:54 +04:00
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2010-06-13 19:00:00 +04:00
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retval = ext2fs_block_iterate3(fs, dir, BLOCK_FLAG_APPEND,
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Many files:
block.c (ext2fs_block_iterate3): Make the ref_offset field contain the
offset into the inode.i_blocks array when ref_block is zero. Since we
haven't done a formal release of e2fsprogs since block_iterate2 was
first introduced, I removed block_iterate2, and renamed block_iterate3
to be block_iterate2.
bb_inode.c, bmove.c, dblist_dir.c, dir_iterate.c, expanddir.c,
ext2fs.h, ext2fsP.h, read_bb.c: Change use of block_iterate and
block_iterate2 to block_iterate2 with the new prototype for the
interator function. (using blkcnt_t forr blockcount)
ChangeLog, debugfs.c, ls.c, lsdel.c:
debugfs.c, ls.c, lsdel.c: Add support for large files. (The high 32
bits share space with the i_dir_acl field.)
1998-03-24 19:17:51 +03:00
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0, expand_dir_proc, &es);
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2014-03-03 09:31:27 +04:00
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if (retval == EXT2_ET_INLINE_DATA_CANT_ITERATE)
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return ext2fs_inline_data_expand(fs, dir);
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1997-04-26 17:21:57 +04:00
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if (es.err)
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return es.err;
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if (!es.done)
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return EXT2_ET_EXPAND_DIR_ERR;
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/*
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* Update the size and block count fields in the inode.
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*/
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retval = ext2fs_read_inode(fs, dir, &inode);
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if (retval)
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return retval;
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2008-08-28 07:07:54 +04:00
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1997-04-26 17:21:57 +04:00
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inode.i_size += fs->blocksize;
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2008-04-09 19:39:11 +04:00
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ext2fs_iblk_add_blocks(fs, &inode, es.newblocks);
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1997-04-26 17:21:57 +04:00
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retval = ext2fs_write_inode(fs, dir, &inode);
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if (retval)
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return retval;
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return 0;
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}
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