Last change
on this file since 3387 was 3320, checked in by Bruno Cornec, 10 years ago |
- Re-add (thanks git BTW) the 2.2.9 branch which had been destroyed in
the move to 3.0
|
-
Property svn:eol-style
set to
native
|
File size:
1.3 KB
|
Line | |
---|
1 | /* vi: set sw=4 ts=4: */
|
---|
2 | /*
|
---|
3 | * valid_blk.c --- does the inode have valid blocks?
|
---|
4 | *
|
---|
5 | * Copyright 1997 by Theodore Ts'o
|
---|
6 | *
|
---|
7 | * %Begin-Header%
|
---|
8 | * This file may be redistributed under the terms of the GNU Public
|
---|
9 | * License.
|
---|
10 | * %End-Header%
|
---|
11 | *
|
---|
12 | */
|
---|
13 |
|
---|
14 | #include <stdio.h>
|
---|
15 | #if HAVE_UNISTD_H
|
---|
16 | #include <unistd.h>
|
---|
17 | #endif
|
---|
18 | #include <string.h>
|
---|
19 | #include <time.h>
|
---|
20 |
|
---|
21 | #include "ext2_fs.h"
|
---|
22 | #include "ext2fs.h"
|
---|
23 |
|
---|
24 | /*
|
---|
25 | * This function returns 1 if the inode's block entries actually
|
---|
26 | * contain block entries.
|
---|
27 | */
|
---|
28 | int ext2fs_inode_has_valid_blocks(struct ext2_inode *inode)
|
---|
29 | {
|
---|
30 | /*
|
---|
31 | * Only directories, regular files, and some symbolic links
|
---|
32 | * have valid block entries.
|
---|
33 | */
|
---|
34 | if (!LINUX_S_ISDIR(inode->i_mode) && !LINUX_S_ISREG(inode->i_mode) &&
|
---|
35 | !LINUX_S_ISLNK(inode->i_mode))
|
---|
36 | return 0;
|
---|
37 |
|
---|
38 | /*
|
---|
39 | * If the symbolic link is a "fast symlink", then the symlink
|
---|
40 | * target is stored in the block entries.
|
---|
41 | */
|
---|
42 | if (LINUX_S_ISLNK (inode->i_mode)) {
|
---|
43 | if (inode->i_file_acl == 0) {
|
---|
44 | /* With no EA block, we can rely on i_blocks */
|
---|
45 | if (inode->i_blocks == 0)
|
---|
46 | return 0;
|
---|
47 | } else {
|
---|
48 | /* With an EA block, life gets more tricky */
|
---|
49 | if (inode->i_size >= EXT2_N_BLOCKS*4)
|
---|
50 | return 1; /* definitely using i_block[] */
|
---|
51 | if (inode->i_size > 4 && inode->i_block[1] == 0)
|
---|
52 | return 1; /* definitely using i_block[] */
|
---|
53 | return 0; /* Probably a fast symlink */
|
---|
54 | }
|
---|
55 | }
|
---|
56 | return 1;
|
---|
57 | }
|
---|
Note:
See
TracBrowser
for help on using the repository browser.