1997-04-29 20:17:09 +04:00
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/*
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* valid_blk.c --- does the inode have valid blocks?
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*
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* Copyright 1997 by Theodore Ts'o
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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 Public
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* License.
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* %End-Header%
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*
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*/
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#include <stdio.h>
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1997-08-11 03:07:40 +04:00
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#if HAVE_UNISTD_H
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1997-04-29 20:17:09 +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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1997-04-29 20:17:09 +04:00
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#include <string.h>
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#include <time.h>
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Many files:
inode.c (ext2fs_open_inode_scan): Initialize the group variables
so that we don't need to call get_next_blockgroup() the first
time around. Saves a bit of time, and prevents us from
needing to assign -1 to current_group (which is an unsigned
value).
icount.c (insert_icount_el): Cast the estimated number of inodes
from a float to an ino_t.
alloc.c, alloc_tables.c, badlbocks.c, bb_compat.c, bb_inode.c,
bitmaps.c, bitops.c, block.c, bmap.c, bmove.c, brel_ma.c,
check_desc.c, closefs.c, cmp_bitmaps.c, dblist.c,
dblist_dir.c, dir_iterate.c, dirblock.c, dupfs.c, expanddir.c,
ext2fs.h, fileio.c, freefs.c, get_pathname.c, getsize.c,
icount.c, initialize.c, inline.c, inode.c, irel_ma.c,
ismounted.c, link.c, lookup.c, mkdir.c, namei.c, native.c,
newdir.c, openfs.c, read_bb.c, read_bb_file.c, rs_bitmap.c,
rw_bitmaps.c, swapfs.c, test_io.c, tst_badblocks.c,
tst_getsize.c, tst_iscan.c, unix_io.c, unlink.c, valid_blk.c,
version.c: If EXT2_FLAT_INCLUDES is defined, then assume all
of the ext2-specific header files are in a flat directory.
block.c, bmove.c, dirblock.c, fileio.c: Explicitly cast
all assignments from void * to be compatible with C++.
closefs.c (ext2fs_flush): Add a call to io_channel_flush() to
make sure the contents of the disk are flushed to disk.
dblist.c (ext2fs_add_dir_block): Change new to be new_entry to
avoid C++ namespace clash.
bitmaps.c (ext2fs_copy_bitmap): Change new to be new_map to
avoid C++ namespace clash.
ext2fs.h, bb_inode.c, block.c, bmove.c, brel.h, brel_ma.c,
irel.h, irel_ma.c, dblist.c, dblist_dir.c, dir_iterate.c,
ext2fsP.h, expanddir.c, get_pathname.c, inode.c, link.c,
unlink.c: Change private to be priv_data (to avoid C++
namespace clash)
1998-01-19 17:47:53 +03:00
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#include "ext2_fs.h"
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1997-04-29 20:17:09 +04:00
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#include "ext2fs.h"
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/*
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* This function returns 1 if the inode's block entries actually
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* contain block entries.
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*/
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int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode)
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{
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/*
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* Only directories, regular files, and some symbolic links
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* have valid block entries.
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*/
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if (!LINUX_S_ISDIR(inode->i_mode) && !LINUX_S_ISREG(inode->i_mode) &&
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!LINUX_S_ISLNK(inode->i_mode))
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return 0;
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/*
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* If the symbolic link is a "fast symlink", then the symlink
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* target is stored in the block entries.
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*/
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2002-08-17 18:19:44 +04:00
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if (LINUX_S_ISLNK (inode->i_mode)) {
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if (inode->i_file_acl == 0) {
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/* With no EA block, we can rely on i_blocks */
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if (inode->i_blocks == 0)
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return 0;
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} else {
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/* With an EA block, life gets more tricky */
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if (inode->i_size >= EXT2_N_BLOCKS*4)
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return 1; /* definitely using i_block[] */
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2002-08-20 09:14:30 +04:00
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if (inode->i_size > 4 && inode->i_block[1] == 0)
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return 1; /* definitely using i_block[] */
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2002-08-17 18:19:44 +04:00
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return 0; /* Probably a fast symlink */
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}
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}
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1997-04-29 20:17:09 +04:00
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return 1;
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}
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