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Subject[PATCH 11/18] wireless/ti: change strncpy+truncation to strlcpy
Date
Generated by scripts/coccinelle/misc/strncpy_truncation.cocci

Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
---

Please see https://marc.info/?l=linux-kernel&m=153144450722324&w=2 (the
first patch of the serie) for the motivation behind this patch

drivers/net/wireless/ti/wl1251/acx.c | 9 +--------
drivers/net/wireless/ti/wl18xx/main.c | 5 +----
drivers/net/wireless/ti/wlcore/boot.c | 5 +----
3 files changed, 3 insertions(+), 16 deletions(-)

diff --git a/drivers/net/wireless/ti/wl1251/acx.c b/drivers/net/wireless/ti/wl1251/acx.c
index f78fc3880423..c4f1a63300bb 100644
--- a/drivers/net/wireless/ti/wl1251/acx.c
+++ b/drivers/net/wireless/ti/wl1251/acx.c
@@ -150,14 +150,7 @@ int wl1251_acx_fw_version(struct wl1251 *wl, char *buf, size_t len)
}

/* be careful with the buffer sizes */
- strncpy(buf, rev->fw_version, min(len, sizeof(rev->fw_version)));
-
- /*
- * if the firmware version string is exactly
- * sizeof(rev->fw_version) long or fw_len is less than
- * sizeof(rev->fw_version) it won't be null terminated
- */
- buf[min(len, sizeof(rev->fw_version)) - 1] = '\0';
+ strlcpy(buf, rev->fw_version, min(len, sizeof(rev->fw_version)));

out:
kfree(rev);
diff --git a/drivers/net/wireless/ti/wl18xx/main.c b/drivers/net/wireless/ti/wl18xx/main.c
index ca0f936fc119..8595e9bf1cfa 100644
--- a/drivers/net/wireless/ti/wl18xx/main.c
+++ b/drivers/net/wireless/ti/wl18xx/main.c
@@ -1529,12 +1529,9 @@ static int wl18xx_handle_static_data(struct wl1271 *wl,
struct wl18xx_static_data_priv *static_data_priv =
(struct wl18xx_static_data_priv *) static_data->priv;

- strncpy(wl->chip.phy_fw_ver_str, static_data_priv->phy_version,
+ strlcpy(wl->chip.phy_fw_ver_str, static_data_priv->phy_version,
sizeof(wl->chip.phy_fw_ver_str));

- /* make sure the string is NULL-terminated */
- wl->chip.phy_fw_ver_str[sizeof(wl->chip.phy_fw_ver_str) - 1] = '\0';
-
wl1271_info("PHY firmware version: %s", static_data_priv->phy_version);

return 0;
diff --git a/drivers/net/wireless/ti/wlcore/boot.c b/drivers/net/wireless/ti/wlcore/boot.c
index f00509ea8aca..6b33951d5b34 100644
--- a/drivers/net/wireless/ti/wlcore/boot.c
+++ b/drivers/net/wireless/ti/wlcore/boot.c
@@ -55,12 +55,9 @@ static int wlcore_boot_parse_fw_ver(struct wl1271 *wl,
{
int ret;

- strncpy(wl->chip.fw_ver_str, static_data->fw_version,
+ strlcpy(wl->chip.fw_ver_str, static_data->fw_version,
sizeof(wl->chip.fw_ver_str));

- /* make sure the string is NULL-terminated */
- wl->chip.fw_ver_str[sizeof(wl->chip.fw_ver_str) - 1] = '\0';
-
ret = sscanf(wl->chip.fw_ver_str + 4, "%u.%u.%u.%u.%u",
&wl->chip.fw_ver[0], &wl->chip.fw_ver[1],
&wl->chip.fw_ver[2], &wl->chip.fw_ver[3],
--
2.17.1
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