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From dcb36fd007ddb32d8c5cfcf5e9ddb3d713d65396 Mon Sep 17 00:00:00 2001
From: Hongxu Jia <hongxu.jia@windriver.com>
Date: Tue, 21 Jul 2020 09:43:03 +0800
Subject: [PATCH] fix up check for hardlinks always false if inode > 0xFFFFFFFF
Since commit [382ed4a1 e2fsck: use proper types for variables][1]
applied, it used ext2_ino_t instead of ino_t for referencing inode
numbers, but the type of is_hardlink's `ino' should not be instead,
The ext2_ino_t is 32bit, if inode > 0xFFFFFFFF, its value will be
truncated.
Add a debug printf to show the value of inode, when it check for hardlink
files, it will always return false if inode > 0xFFFFFFFF
|--- a/misc/create_inode.c
|+++ b/misc/create_inode.c
|@@ -605,6 +605,7 @@ static int is_hardlink(struct hdlinks_s *hdlinks, dev_t dev, ext2_ino_t ino)
| {
| int i;
|
|+ printf("%s %d, %lX, %lX\n", __FUNCTION__, __LINE__, hdlinks->hdl[i].src_ino, ino);
| for (i = 0; i < hdlinks->count; i++) {
| if (hdlinks->hdl[i].src_dev == dev &&
| hdlinks->hdl[i].src_ino == ino)
Here is debug message:
is_hardlink 608, 2913DB886, 913DB886
The length of ext2_ino_t is 32bit (typedef __u32 __bitwise ext2_ino_t;),
and ino_t is 64bit on 64bit system (such as x86-64), recover `ino' to ino_t.
[1] https://git.kernel.org/pub/scm/fs/ext2/e2fsprogs.git/commit/?id=382ed4a1c2b60acb9db7631e86dda207bde6076e
Upstream-Status: Submitted [https://github.com/tytso/e2fsprogs/pull/48]
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
---
misc/create_inode.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/misc/create_inode.c b/misc/create_inode.c
index e8d1df6b..837f3875 100644
--- a/misc/create_inode.c
+++ b/misc/create_inode.c
@@ -601,7 +601,7 @@ out:
return err;
}
-static int is_hardlink(struct hdlinks_s *hdlinks, dev_t dev, ext2_ino_t ino)
+static int is_hardlink(struct hdlinks_s *hdlinks, dev_t dev, ino_t ino)
{
int i;
--
2.18.2
|
