1997-04-26 17:21:57 +04:00
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/*
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* inode.c --- utility routines to read and write inodes
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2008-08-28 07:07:54 +04:00
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*
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1997-04-29 20:17:09 +04:00
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* Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
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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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#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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2005-01-26 07:42:56 +03:00
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#if HAVE_ERRNO_H
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#include <errno.h>
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#endif
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2008-11-16 18:03:00 +03:00
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#include <time.h>
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1997-10-20 03:00:21 +04:00
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#if HAVE_SYS_STAT_H
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1997-04-26 17:21:57 +04:00
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#include <sys/stat.h>
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1997-10-20 03:00:21 +04:00
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#endif
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#if HAVE_SYS_TYPES_H
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1997-04-26 17:21:57 +04:00
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#include <sys/types.h>
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1997-10-20 03:00:21 +04:00
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#endif
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1997-04-26 17:21:57 +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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1997-04-29 20:17:09 +04:00
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#include "ext2fsP.h"
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2001-05-03 08:02:29 +04:00
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#include "e2image.h"
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1997-04-29 20:17:09 +04:00
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struct ext2_struct_inode_scan {
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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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errcode_t magic;
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1997-04-29 20:17:09 +04:00
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ext2_filsys fs;
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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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ext2_ino_t current_inode;
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1997-04-29 20:17:09 +04:00
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blk_t current_block;
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dgrp_t current_group;
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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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ext2_ino_t inodes_left;
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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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blk_t blocks_left;
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dgrp_t groups_left;
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blk_t inode_buffer_blocks;
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1997-04-29 20:17:09 +04:00
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char * inode_buffer;
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int inode_size;
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char * ptr;
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int bytes_left;
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char *temp_buffer;
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errcode_t (*done_group)(ext2_filsys fs,
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ext2_inode_scan scan,
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dgrp_t group,
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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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void * priv_data);
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1997-04-29 20:17:09 +04:00
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void * done_group_data;
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int bad_block_ptr;
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int scan_flags;
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int reserved[6];
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};
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1997-04-26 17:21:57 +04:00
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2000-11-12 22:07:06 +03:00
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/*
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* This routine flushes the icache, if it exists.
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*/
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errcode_t ext2fs_flush_icache(ext2_filsys fs)
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{
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int i;
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2008-08-28 07:07:54 +04:00
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2000-11-12 22:07:06 +03:00
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if (!fs->icache)
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return 0;
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for (i=0; i < fs->icache->cache_size; i++)
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fs->icache->cache[i].ino = 0;
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2004-12-24 05:49:05 +03:00
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fs->icache->buffer_blk = 0;
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2000-11-12 22:07:06 +03:00
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return 0;
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}
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1997-04-30 01:26:48 +04:00
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static errcode_t create_icache(ext2_filsys fs)
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{
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1997-10-26 06:41:24 +03:00
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errcode_t retval;
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2008-08-28 07:07:54 +04:00
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1997-04-30 01:26:48 +04:00
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if (fs->icache)
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return 0;
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2003-08-01 17:41:07 +04:00
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retval = ext2fs_get_mem(sizeof(struct ext2_inode_cache), &fs->icache);
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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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memset(fs->icache, 0, sizeof(struct ext2_inode_cache));
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2003-08-01 17:41:07 +04:00
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retval = ext2fs_get_mem(fs->blocksize, &fs->icache->buffer);
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1997-10-26 06:41:24 +03:00
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if (retval) {
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&fs->icache);
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1997-10-26 06:41:24 +03:00
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return retval;
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1997-04-30 01:26:48 +04:00
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}
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fs->icache->buffer_blk = 0;
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fs->icache->cache_last = -1;
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fs->icache->cache_size = 4;
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fs->icache->refcount = 1;
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2007-11-10 03:01:06 +03:00
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retval = ext2fs_get_array(fs->icache->cache_size,
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sizeof(struct ext2_inode_cache_ent),
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&fs->icache->cache);
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1997-10-26 06:41:24 +03:00
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if (retval) {
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2003-08-01 17:41:07 +04:00
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ext2fs_free_mem(&fs->icache->buffer);
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ext2fs_free_mem(&fs->icache);
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1997-10-26 06:41:24 +03:00
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return retval;
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1997-04-30 01:26:48 +04:00
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}
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2000-11-12 22:07:06 +03:00
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ext2fs_flush_icache(fs);
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1997-04-30 01:26:48 +04:00
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return 0;
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}
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1997-04-26 17:21:57 +04:00
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errcode_t ext2fs_open_inode_scan(ext2_filsys fs, int buffer_blocks,
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ext2_inode_scan *ret_scan)
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{
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ext2_inode_scan scan;
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1997-04-29 20:17:09 +04:00
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errcode_t retval;
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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 (*save_get_blocks)(ext2_filsys f, ext2_ino_t ino, blk_t *blocks);
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1997-04-26 17:21:57 +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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1997-04-29 20:17:09 +04:00
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/*
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* If fs->badblocks isn't set, then set it --- since the inode
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* scanning functions require it.
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*/
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if (fs->badblocks == 0) {
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1997-04-29 21:48:10 +04:00
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/*
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* Temporarly save fs->get_blocks and set it to zero,
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* for compatibility with old e2fsck's.
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*/
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save_get_blocks = fs->get_blocks;
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fs->get_blocks = 0;
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1997-04-29 20:17:09 +04:00
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retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
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if (retval && fs->badblocks) {
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ChangeLog, dumpe2fs.c, mke2fs.c:
dumpe2fs.c: Use WORDS_BIGENDIAN to determine whether or not we're
(not) using i386 byte order.
dumpe2fs.c, mke2fs.c: Stop using the compatibility badblocks function,
and use the ext2fs_badblocks_* functions instead.
ChangeLog, inode.c, tst_iscan.c:
inode.c, tst_iscan.c: Stop using the compatibility badblocks function,
and use the ext2fs_badblocks_* functions instead.
ChangeLog, badblocks.c:
badblocks.c: Stop using the compatibility badblocks function, and use
the ext2fs_badblocks_* functions instead.
2001-06-13 04:12:04 +04:00
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ext2fs_badblocks_list_free(fs->badblocks);
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1997-04-29 20:17:09 +04:00
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fs->badblocks = 0;
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}
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1997-04-29 21:48:10 +04:00
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fs->get_blocks = save_get_blocks;
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1997-04-29 20:17:09 +04:00
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}
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2003-08-01 17:41:07 +04:00
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retval = ext2fs_get_mem(sizeof(struct ext2_struct_inode_scan), &scan);
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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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1997-04-26 17:21:57 +04:00
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memset(scan, 0, sizeof(struct ext2_struct_inode_scan));
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1997-04-26 17:34:30 +04:00
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scan->magic = EXT2_ET_MAGIC_INODE_SCAN;
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1997-04-26 17:21:57 +04:00
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scan->fs = fs;
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1997-04-26 18:48:50 +04:00
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scan->inode_size = EXT2_INODE_SIZE(fs->super);
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scan->bytes_left = 0;
|
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
|
|
|
scan->current_group = 0;
|
|
|
|
scan->groups_left = fs->group_desc_count - 1;
|
1997-04-26 17:21:57 +04:00
|
|
|
scan->inode_buffer_blocks = buffer_blocks ? buffer_blocks : 8;
|
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
|
|
|
scan->current_block = scan->fs->
|
|
|
|
group_desc[scan->current_group].bg_inode_table;
|
|
|
|
scan->inodes_left = EXT2_INODES_PER_GROUP(scan->fs->super);
|
|
|
|
scan->blocks_left = scan->fs->inode_blocks_per_group;
|
2008-04-23 07:22:17 +04:00
|
|
|
if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
|
|
|
|
EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
|
|
|
|
scan->inodes_left -=
|
|
|
|
fs->group_desc[scan->current_group].bg_itable_unused;
|
|
|
|
scan->blocks_left =
|
|
|
|
(scan->inodes_left +
|
|
|
|
(fs->blocksize / scan->inode_size - 1)) *
|
|
|
|
scan->inode_size / fs->blocksize;
|
|
|
|
}
|
2010-09-24 18:06:45 +04:00
|
|
|
retval = ext2fs_get_memalign(scan->inode_buffer_blocks * fs->blocksize,
|
|
|
|
fs->blocksize, &scan->inode_buffer);
|
1997-04-26 17:34:30 +04:00
|
|
|
scan->done_group = 0;
|
|
|
|
scan->done_group_data = 0;
|
1997-04-29 20:17:09 +04:00
|
|
|
scan->bad_block_ptr = 0;
|
1997-10-26 06:41:24 +03:00
|
|
|
if (retval) {
|
2003-08-01 17:41:07 +04:00
|
|
|
ext2fs_free_mem(&scan);
|
1997-10-26 06:41:24 +03:00
|
|
|
return retval;
|
1997-04-26 17:21:57 +04:00
|
|
|
}
|
2003-08-01 17:41:07 +04:00
|
|
|
retval = ext2fs_get_mem(scan->inode_size, &scan->temp_buffer);
|
1997-10-26 06:41:24 +03:00
|
|
|
if (retval) {
|
2003-08-01 17:41:07 +04:00
|
|
|
ext2fs_free_mem(&scan->inode_buffer);
|
|
|
|
ext2fs_free_mem(&scan);
|
1997-10-26 06:41:24 +03:00
|
|
|
return retval;
|
1997-04-26 18:48:50 +04:00
|
|
|
}
|
1997-04-29 20:17:09 +04:00
|
|
|
if (scan->fs->badblocks && scan->fs->badblocks->num)
|
|
|
|
scan->scan_flags |= EXT2_SF_CHK_BADBLOCKS;
|
2007-10-22 06:03:25 +04:00
|
|
|
if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
|
|
|
|
EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
|
|
|
|
scan->scan_flags |= EXT2_SF_DO_LAZY;
|
1997-04-26 17:21:57 +04:00
|
|
|
*ret_scan = scan;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void ext2fs_close_inode_scan(ext2_inode_scan scan)
|
|
|
|
{
|
1997-04-26 17:34:30 +04:00
|
|
|
if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))
|
|
|
|
return;
|
2008-08-28 07:07:54 +04:00
|
|
|
|
2003-08-01 17:41:07 +04:00
|
|
|
ext2fs_free_mem(&scan->inode_buffer);
|
1997-04-26 17:21:57 +04:00
|
|
|
scan->inode_buffer = NULL;
|
2003-08-01 17:41:07 +04:00
|
|
|
ext2fs_free_mem(&scan->temp_buffer);
|
1997-04-26 18:48:50 +04:00
|
|
|
scan->temp_buffer = NULL;
|
2003-08-01 17:41:07 +04:00
|
|
|
ext2fs_free_mem(&scan);
|
1997-04-26 17:21:57 +04:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
1997-04-26 17:34:30 +04:00
|
|
|
void ext2fs_set_inode_callback(ext2_inode_scan scan,
|
|
|
|
errcode_t (*done_group)(ext2_filsys fs,
|
|
|
|
ext2_inode_scan scan,
|
|
|
|
dgrp_t group,
|
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
|
|
|
void * priv_data),
|
1997-04-26 17:34:30 +04:00
|
|
|
void *done_group_data)
|
|
|
|
{
|
|
|
|
if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))
|
|
|
|
return;
|
2008-08-28 07:07:54 +04:00
|
|
|
|
1997-04-26 17:34:30 +04:00
|
|
|
scan->done_group = done_group;
|
|
|
|
scan->done_group_data = done_group_data;
|
|
|
|
}
|
|
|
|
|
1997-04-29 20:17:09 +04:00
|
|
|
int ext2fs_inode_scan_flags(ext2_inode_scan scan, int set_flags,
|
|
|
|
int clear_flags)
|
|
|
|
{
|
|
|
|
int old_flags;
|
|
|
|
|
|
|
|
if (!scan || (scan->magic != EXT2_ET_MAGIC_INODE_SCAN))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
old_flags = scan->scan_flags;
|
|
|
|
scan->scan_flags &= ~clear_flags;
|
|
|
|
scan->scan_flags |= set_flags;
|
|
|
|
return old_flags;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This function is called by ext2fs_get_next_inode when it needs to
|
|
|
|
* get ready to read in a new blockgroup.
|
|
|
|
*/
|
|
|
|
static errcode_t get_next_blockgroup(ext2_inode_scan scan)
|
|
|
|
{
|
2007-10-22 06:03:25 +04:00
|
|
|
ext2_filsys fs = scan->fs;
|
|
|
|
|
1997-04-29 20:17:09 +04:00
|
|
|
scan->current_group++;
|
|
|
|
scan->groups_left--;
|
2007-10-22 06:03:25 +04:00
|
|
|
|
|
|
|
scan->current_block =fs->group_desc[scan->current_group].bg_inode_table;
|
1997-04-29 20:17:09 +04:00
|
|
|
|
ChangeLog, debugfs.8.in, debugfs.c:
Add a -V option which displays the current version.
ChangeLog, unix.c:
unix.c (e2fsck_update_progress): Remove unused variables.
ChangeLog, inode.c:
inode.c (get_next_blockgroup): Fix bug where if get_next_blockgroup()
is called early because of a missing inode table in a block group, the
current_inode counter wasn't incremented correctly.
ChangeLog, tst_uuid.c:
tst_uuid.c (main): Fixed bogus declaration of the main's argv parameter.
ChangeLog, test_icount.c:
test_icount.c (main): Fix main() declaration so that it returns int,
not void.
Many files:
fsck.c (ignore): Remove unused variable cp.
chattr.c (fatal_error):
tune2fs.c (usage):
lsattr.c (usage):
dumpe2fs.c (usage):
badblocks.c (usage): Remove volatile from declaration.
fsck.c: Change use of strdup to be string_copy, since we don't trust
what glibc is doing with strdup. (Whatever it is, it isn't pretty.)
1998-06-27 09:11:14 +04:00
|
|
|
scan->current_inode = scan->current_group *
|
2007-10-22 06:03:25 +04:00
|
|
|
EXT2_INODES_PER_GROUP(fs->super);
|
ChangeLog, debugfs.8.in, debugfs.c:
Add a -V option which displays the current version.
ChangeLog, unix.c:
unix.c (e2fsck_update_progress): Remove unused variables.
ChangeLog, inode.c:
inode.c (get_next_blockgroup): Fix bug where if get_next_blockgroup()
is called early because of a missing inode table in a block group, the
current_inode counter wasn't incremented correctly.
ChangeLog, tst_uuid.c:
tst_uuid.c (main): Fixed bogus declaration of the main's argv parameter.
ChangeLog, test_icount.c:
test_icount.c (main): Fix main() declaration so that it returns int,
not void.
Many files:
fsck.c (ignore): Remove unused variable cp.
chattr.c (fatal_error):
tune2fs.c (usage):
lsattr.c (usage):
dumpe2fs.c (usage):
badblocks.c (usage): Remove volatile from declaration.
fsck.c: Change use of strdup to be string_copy, since we don't trust
what glibc is doing with strdup. (Whatever it is, it isn't pretty.)
1998-06-27 09:11:14 +04:00
|
|
|
|
1997-04-29 20:17:09 +04:00
|
|
|
scan->bytes_left = 0;
|
2007-10-22 06:03:25 +04:00
|
|
|
scan->inodes_left = EXT2_INODES_PER_GROUP(fs->super);
|
|
|
|
scan->blocks_left = fs->inode_blocks_per_group;
|
|
|
|
if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
|
|
|
|
EXT4_FEATURE_RO_COMPAT_GDT_CSUM)) {
|
|
|
|
scan->inodes_left -=
|
|
|
|
fs->group_desc[scan->current_group].bg_itable_unused;
|
|
|
|
scan->blocks_left =
|
2008-03-31 18:57:38 +04:00
|
|
|
(scan->inodes_left +
|
|
|
|
(fs->blocksize / scan->inode_size - 1)) *
|
2007-10-22 06:03:25 +04:00
|
|
|
scan->inode_size / fs->blocksize;
|
|
|
|
}
|
|
|
|
|
1997-04-29 20:17:09 +04:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
errcode_t ext2fs_inode_scan_goto_blockgroup(ext2_inode_scan scan,
|
|
|
|
int group)
|
|
|
|
{
|
|
|
|
scan->current_group = group - 1;
|
|
|
|
scan->groups_left = scan->fs->group_desc_count - group;
|
|
|
|
return get_next_blockgroup(scan);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This function is called by get_next_blocks() to check for bad
|
|
|
|
* blocks in the inode table.
|
|
|
|
*
|
|
|
|
* This function assumes that badblocks_list->list is sorted in
|
|
|
|
* increasing order.
|
|
|
|
*/
|
|
|
|
static errcode_t check_for_inode_bad_blocks(ext2_inode_scan scan,
|
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
|
|
|
blk_t *num_blocks)
|
1997-04-29 20:17:09 +04:00
|
|
|
{
|
|
|
|
blk_t blk = scan->current_block;
|
|
|
|
badblocks_list bb = scan->fs->badblocks;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the inode table is missing, then obviously there are no
|
|
|
|
* bad blocks. :-)
|
|
|
|
*/
|
|
|
|
if (blk == 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the current block is greater than the bad block listed
|
|
|
|
* in the bad block list, then advance the pointer until this
|
|
|
|
* is no longer the case. If we run out of bad blocks, then
|
|
|
|
* we don't need to do any more checking!
|
|
|
|
*/
|
|
|
|
while (blk > bb->list[scan->bad_block_ptr]) {
|
|
|
|
if (++scan->bad_block_ptr >= bb->num) {
|
|
|
|
scan->scan_flags &= ~EXT2_SF_CHK_BADBLOCKS;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the current block is equal to the bad block listed in
|
|
|
|
* the bad block list, then handle that one block specially.
|
|
|
|
* (We could try to handle runs of bad blocks, but that
|
|
|
|
* only increases CPU efficiency by a small amount, at the
|
|
|
|
* expense of a huge expense of code complexity, and for an
|
|
|
|
* uncommon case at that.)
|
|
|
|
*/
|
|
|
|
if (blk == bb->list[scan->bad_block_ptr]) {
|
|
|
|
scan->scan_flags |= EXT2_SF_BAD_INODE_BLK;
|
|
|
|
*num_blocks = 1;
|
|
|
|
if (++scan->bad_block_ptr >= bb->num)
|
|
|
|
scan->scan_flags &= ~EXT2_SF_CHK_BADBLOCKS;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If there is a bad block in the range that we're about to
|
|
|
|
* read in, adjust the number of blocks to read so that we we
|
|
|
|
* don't read in the bad block. (Then the next block to read
|
|
|
|
* will be the bad block, which is handled in the above case.)
|
|
|
|
*/
|
|
|
|
if ((blk + *num_blocks) > bb->list[scan->bad_block_ptr])
|
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
|
|
|
*num_blocks = (int) (bb->list[scan->bad_block_ptr] - blk);
|
1997-04-29 20:17:09 +04:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* This function is called by ext2fs_get_next_inode when it needs to
|
|
|
|
* read in more blocks from the current blockgroup's inode table.
|
|
|
|
*/
|
|
|
|
static errcode_t get_next_blocks(ext2_inode_scan scan)
|
|
|
|
{
|
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
|
|
|
blk_t num_blocks;
|
1997-04-29 20:17:09 +04:00
|
|
|
errcode_t retval;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Figure out how many blocks to read; we read at most
|
|
|
|
* inode_buffer_blocks, and perhaps less if there aren't that
|
|
|
|
* many blocks left to read.
|
|
|
|
*/
|
|
|
|
num_blocks = scan->inode_buffer_blocks;
|
|
|
|
if (num_blocks > scan->blocks_left)
|
|
|
|
num_blocks = scan->blocks_left;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* If the past block "read" was a bad block, then mark the
|
|
|
|
* left-over extra bytes as also being bad.
|
|
|
|
*/
|
|
|
|
if (scan->scan_flags & EXT2_SF_BAD_INODE_BLK) {
|
|
|
|
if (scan->bytes_left)
|
|
|
|
scan->scan_flags |= EXT2_SF_BAD_EXTRA_BYTES;
|
|
|
|
scan->scan_flags &= ~EXT2_SF_BAD_INODE_BLK;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Do inode bad block processing, if necessary.
|
|
|
|
*/
|
|
|
|
if (scan->scan_flags & EXT2_SF_CHK_BADBLOCKS) {
|
|
|
|
retval = check_for_inode_bad_blocks(scan, &num_blocks);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
}
|
2008-08-28 07:07:54 +04:00
|
|
|
|
1997-04-29 20:17:09 +04:00
|
|
|
if ((scan->scan_flags & EXT2_SF_BAD_INODE_BLK) ||
|
|
|
|
(scan->current_block == 0)) {
|
|
|
|
memset(scan->inode_buffer, 0,
|
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
|
|
|
(size_t) num_blocks * scan->fs->blocksize);
|
1997-04-29 20:17:09 +04:00
|
|
|
} else {
|
|
|
|
retval = io_channel_read_blk(scan->fs->io,
|
|
|
|
scan->current_block,
|
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
|
|
|
(int) num_blocks,
|
|
|
|
scan->inode_buffer);
|
1997-04-29 20:17:09 +04:00
|
|
|
if (retval)
|
|
|
|
return EXT2_ET_NEXT_INODE_READ;
|
|
|
|
}
|
|
|
|
scan->ptr = scan->inode_buffer;
|
|
|
|
scan->bytes_left = num_blocks * scan->fs->blocksize;
|
|
|
|
|
|
|
|
scan->blocks_left -= num_blocks;
|
|
|
|
if (scan->current_block)
|
|
|
|
scan->current_block += num_blocks;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
ChangeLog, debugfs.8.in, debugfs.c:
Add a -V option which displays the current version.
ChangeLog, unix.c:
unix.c (e2fsck_update_progress): Remove unused variables.
ChangeLog, inode.c:
inode.c (get_next_blockgroup): Fix bug where if get_next_blockgroup()
is called early because of a missing inode table in a block group, the
current_inode counter wasn't incremented correctly.
ChangeLog, tst_uuid.c:
tst_uuid.c (main): Fixed bogus declaration of the main's argv parameter.
ChangeLog, test_icount.c:
test_icount.c (main): Fix main() declaration so that it returns int,
not void.
Many files:
fsck.c (ignore): Remove unused variable cp.
chattr.c (fatal_error):
tune2fs.c (usage):
lsattr.c (usage):
dumpe2fs.c (usage):
badblocks.c (usage): Remove volatile from declaration.
fsck.c: Change use of strdup to be string_copy, since we don't trust
what glibc is doing with strdup. (Whatever it is, it isn't pretty.)
1998-06-27 09:11:14 +04:00
|
|
|
#if 0
|
|
|
|
/*
|
|
|
|
* Returns 1 if the entire inode_buffer has a non-zero size and
|
|
|
|
* contains all zeros. (Not just deleted inodes, since that means
|
|
|
|
* that part of the inode table was used at one point; we want all
|
|
|
|
* zeros, which means that the inode table is pristine.)
|
|
|
|
*/
|
|
|
|
static inline int is_empty_scan(ext2_inode_scan scan)
|
|
|
|
{
|
|
|
|
int i;
|
2008-08-28 07:07:54 +04:00
|
|
|
|
ChangeLog, debugfs.8.in, debugfs.c:
Add a -V option which displays the current version.
ChangeLog, unix.c:
unix.c (e2fsck_update_progress): Remove unused variables.
ChangeLog, inode.c:
inode.c (get_next_blockgroup): Fix bug where if get_next_blockgroup()
is called early because of a missing inode table in a block group, the
current_inode counter wasn't incremented correctly.
ChangeLog, tst_uuid.c:
tst_uuid.c (main): Fixed bogus declaration of the main's argv parameter.
ChangeLog, test_icount.c:
test_icount.c (main): Fix main() declaration so that it returns int,
not void.
Many files:
fsck.c (ignore): Remove unused variable cp.
chattr.c (fatal_error):
tune2fs.c (usage):
lsattr.c (usage):
dumpe2fs.c (usage):
badblocks.c (usage): Remove volatile from declaration.
fsck.c: Change use of strdup to be string_copy, since we don't trust
what glibc is doing with strdup. (Whatever it is, it isn't pretty.)
1998-06-27 09:11:14 +04:00
|
|
|
if (scan->bytes_left == 0)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
for (i=0; i < scan->bytes_left; i++)
|
|
|
|
if (scan->ptr[i])
|
|
|
|
return 0;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2005-01-26 07:42:56 +03:00
|
|
|
errcode_t ext2fs_get_next_inode_full(ext2_inode_scan scan, ext2_ino_t *ino,
|
|
|
|
struct ext2_inode *inode, int bufsize)
|
1997-04-26 17:21:57 +04:00
|
|
|
{
|
|
|
|
errcode_t retval;
|
1997-04-26 18:48:50 +04:00
|
|
|
int extra_bytes = 0;
|
2008-08-28 07:07:54 +04:00
|
|
|
|
1997-04-26 17:34:30 +04:00
|
|
|
EXT2_CHECK_MAGIC(scan, EXT2_ET_MAGIC_INODE_SCAN);
|
|
|
|
|
1997-04-26 18:48:50 +04:00
|
|
|
/*
|
|
|
|
* Do we need to start reading a new block group?
|
|
|
|
*/
|
1997-04-26 17:21:57 +04:00
|
|
|
if (scan->inodes_left <= 0) {
|
ChangeLog, debugfs.8.in, debugfs.c:
Add a -V option which displays the current version.
ChangeLog, unix.c:
unix.c (e2fsck_update_progress): Remove unused variables.
ChangeLog, inode.c:
inode.c (get_next_blockgroup): Fix bug where if get_next_blockgroup()
is called early because of a missing inode table in a block group, the
current_inode counter wasn't incremented correctly.
ChangeLog, tst_uuid.c:
tst_uuid.c (main): Fixed bogus declaration of the main's argv parameter.
ChangeLog, test_icount.c:
test_icount.c (main): Fix main() declaration so that it returns int,
not void.
Many files:
fsck.c (ignore): Remove unused variable cp.
chattr.c (fatal_error):
tune2fs.c (usage):
lsattr.c (usage):
dumpe2fs.c (usage):
badblocks.c (usage): Remove volatile from declaration.
fsck.c: Change use of strdup to be string_copy, since we don't trust
what glibc is doing with strdup. (Whatever it is, it isn't pretty.)
1998-06-27 09:11:14 +04:00
|
|
|
force_new_group:
|
1997-04-26 18:48:50 +04:00
|
|
|
if (scan->done_group) {
|
|
|
|
retval = (scan->done_group)
|
1997-04-29 20:17:09 +04:00
|
|
|
(scan->fs, scan, scan->current_group,
|
1997-04-26 18:48:50 +04:00
|
|
|
scan->done_group_data);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
if (scan->groups_left <= 0) {
|
|
|
|
*ino = 0;
|
|
|
|
return 0;
|
1997-04-26 17:21:57 +04:00
|
|
|
}
|
1997-04-29 20:17:09 +04:00
|
|
|
retval = get_next_blockgroup(scan);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
1997-04-26 18:48:50 +04:00
|
|
|
}
|
1998-02-21 04:41:39 +03:00
|
|
|
/*
|
2008-08-28 07:07:54 +04:00
|
|
|
* These checks are done outside the above if statement so
|
2006-05-09 04:17:26 +04:00
|
|
|
* they can be done for block group #0.
|
1998-02-21 04:41:39 +03:00
|
|
|
*/
|
2006-05-09 04:17:26 +04:00
|
|
|
if ((scan->scan_flags & EXT2_SF_DO_LAZY) &&
|
|
|
|
(scan->fs->group_desc[scan->current_group].bg_flags &
|
|
|
|
EXT2_BG_INODE_UNINIT))
|
|
|
|
goto force_new_group;
|
2007-10-22 06:03:25 +04:00
|
|
|
if (scan->inodes_left == 0)
|
|
|
|
goto force_new_group;
|
1998-02-21 04:41:39 +03:00
|
|
|
if (scan->current_block == 0) {
|
|
|
|
if (scan->scan_flags & EXT2_SF_SKIP_MISSING_ITABLE) {
|
ChangeLog, debugfs.8.in, debugfs.c:
Add a -V option which displays the current version.
ChangeLog, unix.c:
unix.c (e2fsck_update_progress): Remove unused variables.
ChangeLog, inode.c:
inode.c (get_next_blockgroup): Fix bug where if get_next_blockgroup()
is called early because of a missing inode table in a block group, the
current_inode counter wasn't incremented correctly.
ChangeLog, tst_uuid.c:
tst_uuid.c (main): Fixed bogus declaration of the main's argv parameter.
ChangeLog, test_icount.c:
test_icount.c (main): Fix main() declaration so that it returns int,
not void.
Many files:
fsck.c (ignore): Remove unused variable cp.
chattr.c (fatal_error):
tune2fs.c (usage):
lsattr.c (usage):
dumpe2fs.c (usage):
badblocks.c (usage): Remove volatile from declaration.
fsck.c: Change use of strdup to be string_copy, since we don't trust
what glibc is doing with strdup. (Whatever it is, it isn't pretty.)
1998-06-27 09:11:14 +04:00
|
|
|
goto force_new_group;
|
1998-02-21 04:41:39 +03:00
|
|
|
} else
|
|
|
|
return EXT2_ET_MISSING_INODE_TABLE;
|
|
|
|
}
|
2008-08-28 07:07:54 +04:00
|
|
|
|
1997-04-26 18:48:50 +04:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Have we run out of space in the inode buffer? If so, we
|
|
|
|
* need to read in more blocks.
|
|
|
|
*/
|
|
|
|
if (scan->bytes_left < scan->inode_size) {
|
|
|
|
memcpy(scan->temp_buffer, scan->ptr, scan->bytes_left);
|
|
|
|
extra_bytes = scan->bytes_left;
|
1997-04-29 20:17:09 +04:00
|
|
|
|
|
|
|
retval = get_next_blocks(scan);
|
1997-04-26 17:21:57 +04:00
|
|
|
if (retval)
|
1997-04-29 20:17:09 +04:00
|
|
|
return retval;
|
ChangeLog, debugfs.8.in, debugfs.c:
Add a -V option which displays the current version.
ChangeLog, unix.c:
unix.c (e2fsck_update_progress): Remove unused variables.
ChangeLog, inode.c:
inode.c (get_next_blockgroup): Fix bug where if get_next_blockgroup()
is called early because of a missing inode table in a block group, the
current_inode counter wasn't incremented correctly.
ChangeLog, tst_uuid.c:
tst_uuid.c (main): Fixed bogus declaration of the main's argv parameter.
ChangeLog, test_icount.c:
test_icount.c (main): Fix main() declaration so that it returns int,
not void.
Many files:
fsck.c (ignore): Remove unused variable cp.
chattr.c (fatal_error):
tune2fs.c (usage):
lsattr.c (usage):
dumpe2fs.c (usage):
badblocks.c (usage): Remove volatile from declaration.
fsck.c: Change use of strdup to be string_copy, since we don't trust
what glibc is doing with strdup. (Whatever it is, it isn't pretty.)
1998-06-27 09:11:14 +04:00
|
|
|
#if 0
|
|
|
|
/*
|
|
|
|
* XXX test Need check for used inode somehow.
|
|
|
|
* (Note: this is hard.)
|
|
|
|
*/
|
|
|
|
if (is_empty_scan(scan))
|
|
|
|
goto force_new_group;
|
|
|
|
#endif
|
1997-04-26 18:48:50 +04:00
|
|
|
}
|
|
|
|
|
1997-04-29 20:17:09 +04:00
|
|
|
retval = 0;
|
1997-04-26 18:48:50 +04:00
|
|
|
if (extra_bytes) {
|
|
|
|
memcpy(scan->temp_buffer+extra_bytes, scan->ptr,
|
|
|
|
scan->inode_size - extra_bytes);
|
|
|
|
scan->ptr += scan->inode_size - extra_bytes;
|
|
|
|
scan->bytes_left -= scan->inode_size - extra_bytes;
|
|
|
|
|
2007-08-11 09:56:48 +04:00
|
|
|
#ifdef WORDS_BIGENDIAN
|
2007-06-30 05:40:19 +04:00
|
|
|
memset(inode, 0, bufsize);
|
2008-08-28 07:07:54 +04:00
|
|
|
ext2fs_swap_inode_full(scan->fs,
|
2007-08-11 09:56:48 +04:00
|
|
|
(struct ext2_inode_large *) inode,
|
2008-08-28 07:07:54 +04:00
|
|
|
(struct ext2_inode_large *) scan->temp_buffer,
|
2007-08-11 09:56:48 +04:00
|
|
|
0, bufsize);
|
|
|
|
#else
|
|
|
|
*inode = *((struct ext2_inode *) scan->temp_buffer);
|
ChangeLog, Makefile.in, swapfs.c, unix.c:
Makefile.in: Add message.c and swapfs.c to the list of source files to
build the make depend.
swapfs.c, unix.c: Only support the -s and -S options to e2fsck if
ENABLE_SWAPFS is defined.
Many files:
ext2fs.h, bitops.h, block.c, bmap.c, closefs.c, dirblock.c, inode.c,
native.c, openfs.c, rw_bitmaps.c, swapfs.c: Only include the
byte-swapping logic if ENABLE_SWAPFS is turned on or if we're on a
big-endian machine.
initialize.c (ext2fs_initialize):Use WORDS_BIGENDIAN directly to set
EXT2_FLAG_SWAP_BYTES, instead of using ext2fs_native_flag.
native.c (ext2fs_native_flag): Use WORDS_BIGENDIAN provided by
autoconf to determine whether or not return EXT2_FLAG_SWAP_BYTES.
2001-06-11 11:00:04 +04:00
|
|
|
#endif
|
1997-04-29 20:17:09 +04:00
|
|
|
if (scan->scan_flags & EXT2_SF_BAD_EXTRA_BYTES)
|
|
|
|
retval = EXT2_ET_BAD_BLOCK_IN_INODE_TABLE;
|
|
|
|
scan->scan_flags &= ~EXT2_SF_BAD_EXTRA_BYTES;
|
1997-04-26 18:48:50 +04:00
|
|
|
} else {
|
2007-08-11 09:56:48 +04:00
|
|
|
#ifdef WORDS_BIGENDIAN
|
2007-06-30 05:40:19 +04:00
|
|
|
memset(inode, 0, bufsize);
|
2008-08-28 07:07:54 +04:00
|
|
|
ext2fs_swap_inode_full(scan->fs,
|
2005-01-26 07:42:56 +03:00
|
|
|
(struct ext2_inode_large *) inode,
|
|
|
|
(struct ext2_inode_large *) scan->ptr,
|
|
|
|
0, bufsize);
|
2007-08-11 09:56:48 +04:00
|
|
|
#else
|
|
|
|
memcpy(inode, scan->ptr, bufsize);
|
ChangeLog, Makefile.in, swapfs.c, unix.c:
Makefile.in: Add message.c and swapfs.c to the list of source files to
build the make depend.
swapfs.c, unix.c: Only support the -s and -S options to e2fsck if
ENABLE_SWAPFS is defined.
Many files:
ext2fs.h, bitops.h, block.c, bmap.c, closefs.c, dirblock.c, inode.c,
native.c, openfs.c, rw_bitmaps.c, swapfs.c: Only include the
byte-swapping logic if ENABLE_SWAPFS is turned on or if we're on a
big-endian machine.
initialize.c (ext2fs_initialize):Use WORDS_BIGENDIAN directly to set
EXT2_FLAG_SWAP_BYTES, instead of using ext2fs_native_flag.
native.c (ext2fs_native_flag): Use WORDS_BIGENDIAN provided by
autoconf to determine whether or not return EXT2_FLAG_SWAP_BYTES.
2001-06-11 11:00:04 +04:00
|
|
|
#endif
|
1997-04-26 18:48:50 +04:00
|
|
|
scan->ptr += scan->inode_size;
|
|
|
|
scan->bytes_left -= scan->inode_size;
|
1997-04-29 20:17:09 +04:00
|
|
|
if (scan->scan_flags & EXT2_SF_BAD_INODE_BLK)
|
|
|
|
retval = EXT2_ET_BAD_BLOCK_IN_INODE_TABLE;
|
1997-04-26 17:21:57 +04:00
|
|
|
}
|
1997-04-26 17:58:21 +04:00
|
|
|
|
1997-04-26 17:21:57 +04:00
|
|
|
scan->inodes_left--;
|
|
|
|
scan->current_inode++;
|
|
|
|
*ino = scan->current_inode;
|
1997-04-29 20:17:09 +04:00
|
|
|
return retval;
|
1997-04-26 17:21:57 +04:00
|
|
|
}
|
|
|
|
|
2005-01-26 07:42:56 +03:00
|
|
|
errcode_t ext2fs_get_next_inode(ext2_inode_scan scan, ext2_ino_t *ino,
|
|
|
|
struct ext2_inode *inode)
|
|
|
|
{
|
|
|
|
return ext2fs_get_next_inode_full(scan, ino, inode,
|
|
|
|
sizeof(struct ext2_inode));
|
|
|
|
}
|
|
|
|
|
1997-04-26 17:21:57 +04:00
|
|
|
/*
|
|
|
|
* Functions to read and write a single inode.
|
|
|
|
*/
|
2005-01-26 07:42:56 +03:00
|
|
|
errcode_t ext2fs_read_inode_full(ext2_filsys fs, ext2_ino_t ino,
|
|
|
|
struct ext2_inode * inode, int bufsize)
|
1997-04-26 17:21:57 +04:00
|
|
|
{
|
1997-04-26 18:48:50 +04:00
|
|
|
unsigned long group, block, block_nr, offset;
|
|
|
|
char *ptr;
|
1997-04-26 17:21:57 +04:00
|
|
|
errcode_t retval;
|
2005-01-26 07:42:56 +03:00
|
|
|
int clen, i, inodes_per_block, length;
|
2004-07-29 05:11:48 +04:00
|
|
|
io_channel io;
|
1997-04-26 17:21:57 +04:00
|
|
|
|
1997-04-26 17:34:30 +04:00
|
|
|
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
|
|
|
|
|
1997-04-29 18:53:37 +04:00
|
|
|
/* Check to see if user has an override function */
|
|
|
|
if (fs->read_inode) {
|
|
|
|
retval = (fs->read_inode)(fs, ino, inode);
|
|
|
|
if (retval != EXT2_ET_CALLBACK_NOTHANDLED)
|
|
|
|
return retval;
|
|
|
|
}
|
2008-07-15 19:10:19 +04:00
|
|
|
if ((ino == 0) || (ino > fs->super->s_inodes_count))
|
|
|
|
return EXT2_ET_BAD_INODE_NUM;
|
1997-04-30 01:26:48 +04:00
|
|
|
/* Create inode cache if not present */
|
|
|
|
if (!fs->icache) {
|
|
|
|
retval = create_icache(fs);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
}
|
1997-04-29 18:53:37 +04:00
|
|
|
/* Check to see if it's in the inode cache */
|
2005-01-26 07:42:56 +03:00
|
|
|
if (bufsize == sizeof(struct ext2_inode)) {
|
2008-07-15 19:10:19 +04:00
|
|
|
/* only old good inode can be retrieved from the cache */
|
2005-01-26 07:42:56 +03:00
|
|
|
for (i=0; i < fs->icache->cache_size; i++) {
|
|
|
|
if (fs->icache->cache[i].ino == ino) {
|
|
|
|
*inode = fs->icache->cache[i].inode;
|
|
|
|
return 0;
|
|
|
|
}
|
1997-04-29 18:53:37 +04:00
|
|
|
}
|
|
|
|
}
|
2001-05-03 08:02:29 +04:00
|
|
|
if (fs->flags & EXT2_FLAG_IMAGE_FILE) {
|
|
|
|
inodes_per_block = fs->blocksize / EXT2_INODE_SIZE(fs->super);
|
|
|
|
block_nr = fs->image_header->offset_inode / fs->blocksize;
|
|
|
|
block_nr += (ino - 1) / inodes_per_block;
|
|
|
|
offset = ((ino - 1) % inodes_per_block) *
|
|
|
|
EXT2_INODE_SIZE(fs->super);
|
2004-07-29 05:11:48 +04:00
|
|
|
io = fs->image_io;
|
2001-05-03 08:02:29 +04:00
|
|
|
} else {
|
|
|
|
group = (ino - 1) / EXT2_INODES_PER_GROUP(fs->super);
|
2009-01-20 07:09:37 +03:00
|
|
|
if (group > fs->group_desc_count)
|
|
|
|
return EXT2_ET_BAD_INODE_NUM;
|
2001-05-03 08:02:29 +04:00
|
|
|
offset = ((ino - 1) % EXT2_INODES_PER_GROUP(fs->super)) *
|
|
|
|
EXT2_INODE_SIZE(fs->super);
|
|
|
|
block = offset >> EXT2_BLOCK_SIZE_BITS(fs->super);
|
|
|
|
if (!fs->group_desc[(unsigned)group].bg_inode_table)
|
|
|
|
return EXT2_ET_MISSING_INODE_TABLE;
|
2008-08-28 07:07:54 +04:00
|
|
|
block_nr = fs->group_desc[(unsigned)group].bg_inode_table +
|
2001-05-03 08:02:29 +04:00
|
|
|
block;
|
2004-07-29 05:11:48 +04:00
|
|
|
io = fs->io;
|
2001-05-03 08:02:29 +04:00
|
|
|
}
|
1997-04-26 18:48:50 +04:00
|
|
|
offset &= (EXT2_BLOCK_SIZE(fs->super) - 1);
|
|
|
|
|
|
|
|
length = EXT2_INODE_SIZE(fs->super);
|
2005-01-26 07:42:56 +03:00
|
|
|
if (bufsize < length)
|
|
|
|
length = bufsize;
|
|
|
|
|
|
|
|
ptr = (char *) inode;
|
|
|
|
while (length) {
|
|
|
|
clen = length;
|
|
|
|
if ((offset + length) > fs->blocksize)
|
|
|
|
clen = fs->blocksize - offset;
|
|
|
|
|
|
|
|
if (block_nr != fs->icache->buffer_blk) {
|
|
|
|
retval = io_channel_read_blk(io, block_nr, 1,
|
|
|
|
fs->icache->buffer);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
fs->icache->buffer_blk = block_nr;
|
1997-04-30 01:26:48 +04:00
|
|
|
}
|
2005-01-26 07:42:56 +03:00
|
|
|
|
|
|
|
memcpy(ptr, ((char *) fs->icache->buffer) + (unsigned) offset,
|
|
|
|
clen);
|
|
|
|
|
|
|
|
offset = 0;
|
|
|
|
length -= clen;
|
|
|
|
ptr += clen;
|
|
|
|
block_nr++;
|
|
|
|
}
|
|
|
|
|
2007-08-11 09:56:48 +04:00
|
|
|
#ifdef WORDS_BIGENDIAN
|
2008-08-28 07:07:54 +04:00
|
|
|
ext2fs_swap_inode_full(fs, (struct ext2_inode_large *) inode,
|
|
|
|
(struct ext2_inode_large *) inode,
|
2007-08-11 09:56:48 +04:00
|
|
|
0, bufsize);
|
ChangeLog, Makefile.in, swapfs.c, unix.c:
Makefile.in: Add message.c and swapfs.c to the list of source files to
build the make depend.
swapfs.c, unix.c: Only support the -s and -S options to e2fsck if
ENABLE_SWAPFS is defined.
Many files:
ext2fs.h, bitops.h, block.c, bmap.c, closefs.c, dirblock.c, inode.c,
native.c, openfs.c, rw_bitmaps.c, swapfs.c: Only include the
byte-swapping logic if ENABLE_SWAPFS is turned on or if we're on a
big-endian machine.
initialize.c (ext2fs_initialize):Use WORDS_BIGENDIAN directly to set
EXT2_FLAG_SWAP_BYTES, instead of using ext2fs_native_flag.
native.c (ext2fs_native_flag): Use WORDS_BIGENDIAN provided by
autoconf to determine whether or not return EXT2_FLAG_SWAP_BYTES.
2001-06-11 11:00:04 +04:00
|
|
|
#endif
|
1997-04-29 18:53:37 +04:00
|
|
|
|
|
|
|
/* Update the inode cache */
|
1997-04-30 01:26:48 +04:00
|
|
|
fs->icache->cache_last = (fs->icache->cache_last + 1) %
|
|
|
|
fs->icache->cache_size;
|
|
|
|
fs->icache->cache[fs->icache->cache_last].ino = ino;
|
|
|
|
fs->icache->cache[fs->icache->cache_last].inode = *inode;
|
2008-08-28 07:07:54 +04:00
|
|
|
|
1997-04-26 17:21:57 +04:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-01-26 07:42:56 +03:00
|
|
|
errcode_t ext2fs_read_inode(ext2_filsys fs, ext2_ino_t ino,
|
|
|
|
struct ext2_inode * inode)
|
|
|
|
{
|
|
|
|
return ext2fs_read_inode_full(fs, ino, inode,
|
|
|
|
sizeof(struct ext2_inode));
|
|
|
|
}
|
|
|
|
|
|
|
|
errcode_t ext2fs_write_inode_full(ext2_filsys fs, ext2_ino_t ino,
|
|
|
|
struct ext2_inode * inode, int bufsize)
|
1997-04-26 17:21:57 +04:00
|
|
|
{
|
1997-04-26 18:48:50 +04:00
|
|
|
unsigned long group, block, block_nr, offset;
|
2005-01-26 07:42:56 +03:00
|
|
|
errcode_t retval = 0;
|
|
|
|
struct ext2_inode_large temp_inode, *w_inode;
|
1997-04-26 18:48:50 +04:00
|
|
|
char *ptr;
|
2005-01-26 07:42:56 +03:00
|
|
|
int clen, i, length;
|
1997-04-26 17:21:57 +04:00
|
|
|
|
1997-04-26 17:34:30 +04:00
|
|
|
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
|
|
|
|
|
1997-04-29 18:53:37 +04:00
|
|
|
/* Check to see if user provided an override function */
|
|
|
|
if (fs->write_inode) {
|
|
|
|
retval = (fs->write_inode)(fs, ino, inode);
|
|
|
|
if (retval != EXT2_ET_CALLBACK_NOTHANDLED)
|
|
|
|
return retval;
|
|
|
|
}
|
1997-04-30 01:26:48 +04:00
|
|
|
|
1997-04-29 18:53:37 +04:00
|
|
|
/* Check to see if the inode cache needs to be updated */
|
1997-04-30 01:26:48 +04:00
|
|
|
if (fs->icache) {
|
|
|
|
for (i=0; i < fs->icache->cache_size; i++) {
|
|
|
|
if (fs->icache->cache[i].ino == ino) {
|
|
|
|
fs->icache->cache[i].inode = *inode;
|
|
|
|
break;
|
|
|
|
}
|
1997-04-29 18:53:37 +04:00
|
|
|
}
|
1997-04-30 01:26:48 +04:00
|
|
|
} else {
|
|
|
|
retval = create_icache(fs);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
1997-04-29 18:53:37 +04:00
|
|
|
}
|
2008-08-28 07:07:54 +04:00
|
|
|
|
1997-04-26 17:21:57 +04:00
|
|
|
if (!(fs->flags & EXT2_FLAG_RW))
|
|
|
|
return EXT2_ET_RO_FILSYS;
|
|
|
|
|
1999-01-08 16:33:39 +03:00
|
|
|
if ((ino == 0) || (ino > fs->super->s_inodes_count))
|
1997-04-26 17:21:57 +04:00
|
|
|
return EXT2_ET_BAD_INODE_NUM;
|
|
|
|
|
2005-01-26 07:42:56 +03:00
|
|
|
length = bufsize;
|
|
|
|
if (length < EXT2_INODE_SIZE(fs->super))
|
|
|
|
length = EXT2_INODE_SIZE(fs->super);
|
|
|
|
|
|
|
|
if (length > (int) sizeof(struct ext2_inode_large)) {
|
|
|
|
w_inode = malloc(length);
|
|
|
|
if (!w_inode)
|
|
|
|
return ENOMEM;
|
|
|
|
} else
|
|
|
|
w_inode = &temp_inode;
|
|
|
|
memset(w_inode, 0, length);
|
|
|
|
|
2007-08-11 09:56:48 +04:00
|
|
|
#ifdef WORDS_BIGENDIAN
|
2008-08-28 07:07:54 +04:00
|
|
|
ext2fs_swap_inode_full(fs, w_inode,
|
|
|
|
(struct ext2_inode_large *) inode,
|
2007-08-11 09:56:48 +04:00
|
|
|
1, bufsize);
|
|
|
|
#else
|
|
|
|
memcpy(w_inode, inode, bufsize);
|
ChangeLog, Makefile.in, swapfs.c, unix.c:
Makefile.in: Add message.c and swapfs.c to the list of source files to
build the make depend.
swapfs.c, unix.c: Only support the -s and -S options to e2fsck if
ENABLE_SWAPFS is defined.
Many files:
ext2fs.h, bitops.h, block.c, bmap.c, closefs.c, dirblock.c, inode.c,
native.c, openfs.c, rw_bitmaps.c, swapfs.c: Only include the
byte-swapping logic if ENABLE_SWAPFS is turned on or if we're on a
big-endian machine.
initialize.c (ext2fs_initialize):Use WORDS_BIGENDIAN directly to set
EXT2_FLAG_SWAP_BYTES, instead of using ext2fs_native_flag.
native.c (ext2fs_native_flag): Use WORDS_BIGENDIAN provided by
autoconf to determine whether or not return EXT2_FLAG_SWAP_BYTES.
2001-06-11 11:00:04 +04:00
|
|
|
#endif
|
2007-08-11 09:56:48 +04:00
|
|
|
|
1997-04-26 17:21:57 +04:00
|
|
|
group = (ino - 1) / EXT2_INODES_PER_GROUP(fs->super);
|
1997-04-26 18:48:50 +04:00
|
|
|
offset = ((ino - 1) % EXT2_INODES_PER_GROUP(fs->super)) *
|
|
|
|
EXT2_INODE_SIZE(fs->super);
|
|
|
|
block = offset >> EXT2_BLOCK_SIZE_BITS(fs->super);
|
2007-03-22 00:38:47 +03:00
|
|
|
if (!fs->group_desc[(unsigned) group].bg_inode_table) {
|
|
|
|
retval = EXT2_ET_MISSING_INODE_TABLE;
|
|
|
|
goto errout;
|
|
|
|
}
|
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
|
|
|
block_nr = fs->group_desc[(unsigned) group].bg_inode_table + block;
|
2005-01-26 07:42:56 +03:00
|
|
|
|
1997-04-26 18:48:50 +04:00
|
|
|
offset &= (EXT2_BLOCK_SIZE(fs->super) - 1);
|
|
|
|
|
|
|
|
length = EXT2_INODE_SIZE(fs->super);
|
2005-01-26 07:42:56 +03:00
|
|
|
if (length > bufsize)
|
|
|
|
length = bufsize;
|
1997-04-26 18:48:50 +04:00
|
|
|
|
2005-01-26 07:42:56 +03:00
|
|
|
ptr = (char *) w_inode;
|
|
|
|
|
|
|
|
while (length) {
|
|
|
|
clen = length;
|
|
|
|
if ((offset + length) > fs->blocksize)
|
|
|
|
clen = fs->blocksize - offset;
|
|
|
|
|
|
|
|
if (fs->icache->buffer_blk != block_nr) {
|
|
|
|
retval = io_channel_read_blk(fs->io, block_nr, 1,
|
|
|
|
fs->icache->buffer);
|
|
|
|
if (retval)
|
|
|
|
goto errout;
|
|
|
|
fs->icache->buffer_blk = block_nr;
|
1997-04-26 18:48:50 +04:00
|
|
|
}
|
|
|
|
|
2008-08-28 07:07:54 +04:00
|
|
|
|
|
|
|
memcpy((char *) fs->icache->buffer + (unsigned) offset,
|
2005-01-26 07:42:56 +03:00
|
|
|
ptr, clen);
|
|
|
|
|
2008-08-28 07:07:54 +04:00
|
|
|
retval = io_channel_write_blk(fs->io, block_nr, 1,
|
1997-04-30 01:26:48 +04:00
|
|
|
fs->icache->buffer);
|
1997-04-26 18:48:50 +04:00
|
|
|
if (retval)
|
2005-01-26 07:42:56 +03:00
|
|
|
goto errout;
|
|
|
|
|
|
|
|
offset = 0;
|
|
|
|
ptr += clen;
|
|
|
|
length -= clen;
|
|
|
|
block_nr++;
|
1997-04-26 18:48:50 +04:00
|
|
|
}
|
2008-08-28 07:07:54 +04:00
|
|
|
|
1997-04-26 17:21:57 +04:00
|
|
|
fs->flags |= EXT2_FLAG_CHANGED;
|
2005-01-26 07:42:56 +03:00
|
|
|
errout:
|
|
|
|
if (w_inode && w_inode != &temp_inode)
|
|
|
|
free(w_inode);
|
|
|
|
return retval;
|
1997-04-26 17:21:57 +04:00
|
|
|
}
|
|
|
|
|
2005-01-26 07:42:56 +03:00
|
|
|
errcode_t ext2fs_write_inode(ext2_filsys fs, ext2_ino_t ino,
|
|
|
|
struct ext2_inode *inode)
|
|
|
|
{
|
|
|
|
return ext2fs_write_inode_full(fs, ino, inode,
|
|
|
|
sizeof(struct ext2_inode));
|
|
|
|
}
|
2005-03-21 04:05:22 +03:00
|
|
|
|
2008-08-28 07:07:54 +04:00
|
|
|
/*
|
2005-03-21 04:05:22 +03:00
|
|
|
* This function should be called when writing a new inode. It makes
|
2005-03-21 09:02:53 +03:00
|
|
|
* sure that extra part of large inodes is initialized properly.
|
2005-03-21 04:05:22 +03:00
|
|
|
*/
|
|
|
|
errcode_t ext2fs_write_new_inode(ext2_filsys fs, ext2_ino_t ino,
|
|
|
|
struct ext2_inode *inode)
|
|
|
|
{
|
|
|
|
struct ext2_inode *buf;
|
|
|
|
int size = EXT2_INODE_SIZE(fs->super);
|
2005-03-21 09:02:53 +03:00
|
|
|
struct ext2_inode_large *large_inode;
|
2007-04-06 16:50:15 +04:00
|
|
|
errcode_t retval;
|
2008-08-14 22:30:05 +04:00
|
|
|
__u32 t = fs->now ? fs->now : time(NULL);
|
|
|
|
|
|
|
|
if (!inode->i_ctime)
|
|
|
|
inode->i_ctime = t;
|
|
|
|
if (!inode->i_mtime)
|
|
|
|
inode->i_mtime = t;
|
|
|
|
if (!inode->i_atime)
|
|
|
|
inode->i_atime = t;
|
2005-03-21 04:05:22 +03:00
|
|
|
|
|
|
|
if (size == sizeof(struct ext2_inode))
|
|
|
|
return ext2fs_write_inode_full(fs, ino, inode,
|
|
|
|
sizeof(struct ext2_inode));
|
|
|
|
|
|
|
|
buf = malloc(size);
|
|
|
|
if (!buf)
|
|
|
|
return ENOMEM;
|
|
|
|
|
|
|
|
memset(buf, 0, size);
|
|
|
|
*buf = *inode;
|
|
|
|
|
2005-03-21 09:02:53 +03:00
|
|
|
large_inode = (struct ext2_inode_large *) buf;
|
2008-08-28 07:07:54 +04:00
|
|
|
large_inode->i_extra_isize = sizeof(struct ext2_inode_large) -
|
2005-03-21 09:02:53 +03:00
|
|
|
EXT2_GOOD_OLD_INODE_SIZE;
|
2008-08-14 22:30:05 +04:00
|
|
|
if (!large_inode->i_crtime)
|
|
|
|
large_inode->i_crtime = t;
|
2005-03-21 09:02:53 +03:00
|
|
|
|
2007-04-06 16:50:15 +04:00
|
|
|
retval = ext2fs_write_inode_full(fs, ino, buf, size);
|
|
|
|
free(buf);
|
|
|
|
return retval;
|
2005-03-21 04:05:22 +03:00
|
|
|
}
|
|
|
|
|
2008-08-28 07:07:54 +04:00
|
|
|
|
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
|
|
|
errcode_t ext2fs_get_blocks(ext2_filsys fs, ext2_ino_t ino, blk_t *blocks)
|
1997-04-26 17:21:57 +04:00
|
|
|
{
|
|
|
|
struct ext2_inode inode;
|
|
|
|
int i;
|
|
|
|
errcode_t retval;
|
2008-08-28 07:07:54 +04:00
|
|
|
|
1997-04-26 17:34:30 +04:00
|
|
|
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
|
|
|
|
|
1997-04-26 17:21:57 +04:00
|
|
|
if (ino > fs->super->s_inodes_count)
|
|
|
|
return EXT2_ET_BAD_INODE_NUM;
|
|
|
|
|
|
|
|
if (fs->get_blocks) {
|
|
|
|
if (!(*fs->get_blocks)(fs, ino, blocks))
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
retval = ext2fs_read_inode(fs, ino, &inode);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
for (i=0; i < EXT2_N_BLOCKS; i++)
|
|
|
|
blocks[i] = inode.i_block[i];
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
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
|
|
|
errcode_t ext2fs_check_directory(ext2_filsys fs, ext2_ino_t ino)
|
1997-04-26 17:21:57 +04:00
|
|
|
{
|
|
|
|
struct ext2_inode inode;
|
|
|
|
errcode_t retval;
|
2008-08-28 07:07:54 +04:00
|
|
|
|
1997-04-26 17:34:30 +04:00
|
|
|
EXT2_CHECK_MAGIC(fs, EXT2_ET_MAGIC_EXT2FS_FILSYS);
|
|
|
|
|
1997-04-26 17:21:57 +04:00
|
|
|
if (ino > fs->super->s_inodes_count)
|
|
|
|
return EXT2_ET_BAD_INODE_NUM;
|
|
|
|
|
1997-10-03 21:42:28 +04:00
|
|
|
if (fs->check_directory) {
|
|
|
|
retval = (fs->check_directory)(fs, ino);
|
|
|
|
if (retval != EXT2_ET_CALLBACK_NOTHANDLED)
|
|
|
|
return retval;
|
|
|
|
}
|
1997-04-26 17:21:57 +04:00
|
|
|
retval = ext2fs_read_inode(fs, ino, &inode);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
1997-04-26 17:58:21 +04:00
|
|
|
if (!LINUX_S_ISDIR(inode.i_mode))
|
1997-10-31 09:07:47 +03:00
|
|
|
return EXT2_ET_NO_DIRECTORY;
|
1997-04-26 17:21:57 +04:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|