From 29774f3f4e5af8f01dc5410e807b32ac6b765106 Mon Sep 17 00:00:00 2001
From: Mathieu Malaterre <malat@debian.org>
Date: Tue, 16 Jul 2019 16:29:15 -0700
Subject: [PATCH] fs/hfsplus/xattr.c: replace strncpy with memcpy
strncpy() was used to copy a fixed size buffer. Since NUL-terminating
string is not required here, prefer a memcpy function. The generated
code (ppc32) remains the same.
Silence the following warning triggered using W=1:
fs/hfsplus/xattr.c:410:3: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation]
Link: http://lkml.kernel.org/r/20190529113341.11972-1-malat@debian.org
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Reviewed-by: Vyacheslav Dubeyko <slava@dubeyko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
fs/hfsplus/xattr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c
index d5403b4004c97..bb0b27d88e502 100644
--- a/fs/hfsplus/xattr.c
+++ b/fs/hfsplus/xattr.c
@@ -407,7 +407,7 @@ static int copy_name(char *buffer, const char *xattr_name, int name_len)
int offset = 0;
if (!is_known_namespace(xattr_name)) {
- strncpy(buffer, XATTR_MAC_OSX_PREFIX, XATTR_MAC_OSX_PREFIX_LEN);
+ memcpy(buffer, XATTR_MAC_OSX_PREFIX, XATTR_MAC_OSX_PREFIX_LEN);
offset += XATTR_MAC_OSX_PREFIX_LEN;
len += XATTR_MAC_OSX_PREFIX_LEN;
}
--
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