mac80211: brcmfmac: backport more kernel 5.4 changes

[openwrt/staging/pepe2k.git] / package / kernel / mac80211 / patches / 355-v5.4-brcmfmac-replace-strncpy-by-strscpy.patch

diff --git a/package/kernel/mac80211/patches/355-v5.4-brcmfmac-replace-strncpy-by-strscpy.patch b/package/kernel/mac80211/patches/355-v5.4-brcmfmac-replace-strncpy-by-strscpy.patch
new file mode 100644 (file)
index 0000000..c8ebedf
--- /dev/null
+++ b/package/kernel/mac80211/patches/355-v5.4-brcmfmac-replace-strncpy-by-strscpy.patch
@@ -0,0 +1,36 @@
+From 5f42b382ead278c1f6c3854765c97eb20491aa2a Mon Sep 17 00:00:00 2001
+From: Xulin Sun <xulin.sun@windriver.com>
+Date: Fri, 23 Aug 2019 15:47:08 +0800
+Subject: [PATCH] brcmfmac: replace strncpy() by strscpy()
+
+The strncpy() may truncate the copied string,
+replace it by the safer strscpy().
+
+To avoid below compile warning with gcc 8.2:
+
+drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:In function 'brcmf_vndr_ie':
+drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c:4227:2:
+warning: 'strncpy' output truncated before terminating nul copying 3 bytes from a string of the same length [-Wstringop-truncation]
+  strncpy(iebuf, add_del_cmd, VNDR_IE_CMD_LEN - 1);
+  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Signed-off-by: Xulin Sun <xulin.sun@windriver.com>
+Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c | 4 +---
+ 1 file changed, 1 insertion(+), 3 deletions(-)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+@@ -4280,9 +4280,7 @@ next:
+ static u32
+ brcmf_vndr_ie(u8 *iebuf, s32 pktflag, u8 *ie_ptr, u32 ie_len, s8 *add_del_cmd)
+ {
+-
+-      strncpy(iebuf, add_del_cmd, VNDR_IE_CMD_LEN - 1);
+-      iebuf[VNDR_IE_CMD_LEN - 1] = '\0';
++      strscpy(iebuf, add_del_cmd, VNDR_IE_CMD_LEN);
+ 
+       put_unaligned_le32(1, &iebuf[VNDR_IE_COUNT_OFFSET]);
+