1997-06-09 18:51:29 +04:00
|
|
|
/*
|
|
|
|
* bmove.c --- Move blocks around to make way for a particular
|
|
|
|
* filesystem structure.
|
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|
*
|
2010-05-18 05:31:56 +04:00
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|
|
* Copyright (C) 1997 Theodore Ts'o.
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|
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*
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* %Begin-Header%
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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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* %End-Header%
|
1997-06-09 18:51:29 +04:00
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|
*/
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|
#include <stdio.h>
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|
|
#include <string.h>
|
1997-08-11 03:07:40 +04:00
|
|
|
#if HAVE_UNISTD_H
|
1997-06-09 18:51:29 +04:00
|
|
|
#include <unistd.h>
|
1997-08-11 03:07:40 +04:00
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|
|
#endif
|
1997-10-20 03:00:21 +04:00
|
|
|
#if HAVE_SYS_TYPES_H
|
1997-06-09 18:51:29 +04:00
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|
|
#include <sys/types.h>
|
1997-10-20 03:00:21 +04:00
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|
|
#endif
|
|
|
|
#if HAVE_SYS_TIME_H
|
1997-06-09 18:51:29 +04:00
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|
|
#include <sys/time.h>
|
1997-10-20 03:00:21 +04:00
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|
|
#endif
|
1997-06-09 18:51:29 +04:00
|
|
|
|
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
|
|
|
#include "ext2_fs.h"
|
1998-02-17 01:00:37 +03:00
|
|
|
#include "ext2fsP.h"
|
1997-06-09 18:51:29 +04:00
|
|
|
|
|
|
|
struct process_block_struct {
|
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
|
|
|
ext2_ino_t ino;
|
1997-06-09 18:51:29 +04:00
|
|
|
struct ext2_inode * inode;
|
|
|
|
ext2fs_block_bitmap reserve;
|
1997-06-12 02:27:41 +04:00
|
|
|
ext2fs_block_bitmap alloc_map;
|
1997-06-09 18:51:29 +04:00
|
|
|
errcode_t error;
|
|
|
|
char *buf;
|
|
|
|
int add_dir;
|
1997-06-14 11:25:40 +04:00
|
|
|
int flags;
|
1997-06-09 18:51:29 +04:00
|
|
|
};
|
|
|
|
|
2010-06-13 19:00:00 +04:00
|
|
|
static int process_block(ext2_filsys fs, blk64_t *block_nr,
|
|
|
|
e2_blkcnt_t blockcnt, blk64_t ref_block,
|
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
|
|
|
int ref_offset, void *priv_data)
|
1997-06-09 18:51:29 +04:00
|
|
|
{
|
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
|
|
|
struct process_block_struct *pb;
|
1997-06-09 18:51:29 +04:00
|
|
|
errcode_t retval;
|
|
|
|
int ret;
|
2010-06-13 19:00:00 +04:00
|
|
|
blk64_t block, orig;
|
1997-06-09 18:51:29 +04:00
|
|
|
|
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
|
|
|
pb = (struct process_block_struct *) priv_data;
|
1997-06-09 18:51:29 +04:00
|
|
|
block = orig = *block_nr;
|
|
|
|
ret = 0;
|
2008-08-28 07:07:54 +04:00
|
|
|
|
1997-06-09 18:51:29 +04:00
|
|
|
/*
|
|
|
|
* Let's see if this is one which we need to relocate
|
|
|
|
*/
|
2009-08-05 08:27:10 +04:00
|
|
|
if (ext2fs_test_block_bitmap2(pb->reserve, block)) {
|
1997-06-09 18:51:29 +04:00
|
|
|
do {
|
2009-09-08 04:46:34 +04:00
|
|
|
if (++block >= ext2fs_blocks_count(fs->super))
|
1997-06-09 18:51:29 +04:00
|
|
|
block = fs->super->s_first_data_block;
|
|
|
|
if (block == orig) {
|
1997-10-31 09:07:47 +03:00
|
|
|
pb->error = EXT2_ET_BLOCK_ALLOC_FAIL;
|
1997-06-09 18:51:29 +04:00
|
|
|
return BLOCK_ABORT;
|
|
|
|
}
|
2009-08-05 08:27:10 +04:00
|
|
|
} while (ext2fs_test_block_bitmap2(pb->reserve, block) ||
|
|
|
|
ext2fs_test_block_bitmap2(pb->alloc_map, block));
|
1997-06-09 18:51:29 +04:00
|
|
|
|
2009-09-08 05:14:24 +04:00
|
|
|
retval = io_channel_read_blk64(fs->io, orig, 1, pb->buf);
|
1997-06-09 18:51:29 +04:00
|
|
|
if (retval) {
|
|
|
|
pb->error = retval;
|
|
|
|
return BLOCK_ABORT;
|
|
|
|
}
|
2009-09-08 05:14:24 +04:00
|
|
|
retval = io_channel_write_blk64(fs->io, block, 1, pb->buf);
|
1997-06-09 18:51:29 +04:00
|
|
|
if (retval) {
|
|
|
|
pb->error = retval;
|
|
|
|
return BLOCK_ABORT;
|
|
|
|
}
|
|
|
|
*block_nr = block;
|
2009-08-05 08:27:10 +04:00
|
|
|
ext2fs_mark_block_bitmap2(pb->alloc_map, block);
|
1997-06-09 18:51:29 +04:00
|
|
|
ret = BLOCK_CHANGED;
|
1997-06-14 11:25:40 +04:00
|
|
|
if (pb->flags & EXT2_BMOVE_DEBUG)
|
2010-06-13 19:00:00 +04:00
|
|
|
printf("ino=%u, blockcnt=%lld, %llu->%llu\n",
|
|
|
|
(unsigned) pb->ino, blockcnt,
|
|
|
|
(unsigned long long) orig,
|
|
|
|
(unsigned long long) block);
|
1997-06-09 18:51:29 +04:00
|
|
|
}
|
|
|
|
if (pb->add_dir) {
|
2010-06-13 19:00:00 +04:00
|
|
|
retval = ext2fs_add_dir_block2(fs->dblist, pb->ino,
|
|
|
|
block, blockcnt);
|
1997-06-09 18:51:29 +04:00
|
|
|
if (retval) {
|
|
|
|
pb->error = retval;
|
|
|
|
ret |= BLOCK_ABORT;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
errcode_t ext2fs_move_blocks(ext2_filsys fs,
|
|
|
|
ext2fs_block_bitmap reserve,
|
1997-06-12 02:27:41 +04:00
|
|
|
ext2fs_block_bitmap alloc_map,
|
1997-06-09 18:51:29 +04:00
|
|
|
int flags)
|
|
|
|
{
|
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
|
|
|
ext2_ino_t ino;
|
1997-06-09 18:51:29 +04:00
|
|
|
struct ext2_inode inode;
|
|
|
|
errcode_t retval;
|
|
|
|
struct process_block_struct pb;
|
|
|
|
ext2_inode_scan scan;
|
|
|
|
char *block_buf;
|
2008-08-28 07:07:54 +04:00
|
|
|
|
1997-06-09 18:51:29 +04:00
|
|
|
retval = ext2fs_open_inode_scan(fs, 0, &scan);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
|
|
|
|
pb.reserve = reserve;
|
|
|
|
pb.error = 0;
|
1997-06-12 02:27:41 +04:00
|
|
|
pb.alloc_map = alloc_map ? alloc_map : fs->block_map;
|
1997-06-14 11:25:40 +04:00
|
|
|
pb.flags = flags;
|
2008-08-28 07:07:54 +04:00
|
|
|
|
2007-11-10 03:01:06 +03:00
|
|
|
retval = ext2fs_get_array(4, fs->blocksize, &block_buf);
|
1997-10-26 06:41:24 +03:00
|
|
|
if (retval)
|
|
|
|
return retval;
|
1997-06-09 18:51:29 +04:00
|
|
|
pb.buf = block_buf + fs->blocksize * 3;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If GET_DBLIST is set in the flags field, then we should
|
|
|
|
* gather directory block information while we're doing the
|
|
|
|
* block move.
|
|
|
|
*/
|
|
|
|
if (flags & EXT2_BMOVE_GET_DBLIST) {
|
|
|
|
if (fs->dblist) {
|
|
|
|
ext2fs_free_dblist(fs->dblist);
|
|
|
|
fs->dblist = NULL;
|
|
|
|
}
|
|
|
|
retval = ext2fs_init_dblist(fs, 0);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
retval = ext2fs_get_next_inode(scan, &ino, &inode);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
2008-08-28 07:07:54 +04:00
|
|
|
|
1997-06-09 18:51:29 +04:00
|
|
|
while (ino) {
|
|
|
|
if ((inode.i_links_count == 0) ||
|
|
|
|
!ext2fs_inode_has_valid_blocks(&inode))
|
|
|
|
goto next;
|
2008-08-28 07:07:54 +04:00
|
|
|
|
1997-06-09 18:51:29 +04:00
|
|
|
pb.ino = ino;
|
|
|
|
pb.inode = &inode;
|
|
|
|
|
|
|
|
pb.add_dir = (LINUX_S_ISDIR(inode.i_mode) &&
|
|
|
|
flags & EXT2_BMOVE_GET_DBLIST);
|
|
|
|
|
2010-06-13 19:00:00 +04:00
|
|
|
retval = ext2fs_block_iterate3(fs, ino, 0, block_buf,
|
|
|
|
process_block, &pb);
|
1997-06-09 18:51:29 +04:00
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
if (pb.error)
|
|
|
|
return pb.error;
|
|
|
|
|
|
|
|
next:
|
|
|
|
retval = ext2fs_get_next_inode(scan, &ino, &inode);
|
|
|
|
if (retval == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE)
|
|
|
|
goto next;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|