diff options
| author | Dan Carpenter <error27@gmail.com> | 2010-07-22 10:50:28 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-07-26 15:32:41 -0400 |
| commit | 9746010bd3c825d364b783b327990d25962657dd (patch) | |
| tree | da80f719e9ada0606c0958bea5e32d6132ecb12f | |
| parent | 929ebd30e4f982a1d2817f70154e7441f5714118 (diff) | |
ath9k: snprintf() returns largish values
The snprintf() function returns the number of characters that would have
been written (not counting the NUL character on the end). It could
potentially be larger than the size of the buffer.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/htc_drv_main.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c index 32438771ca2..cf9bcc67ade 100644 --- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c +++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c @@ -524,6 +524,9 @@ static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf, len += snprintf(buf + len, sizeof(buf) - len, "%19s : %10u\n", "TX Rate", priv->debug.txrate); + if (len > sizeof(buf)) + len = sizeof(buf); + return simple_read_from_buffer(user_buf, count, ppos, buf, len); } @@ -569,6 +572,9 @@ static ssize_t read_file_xmit(struct file *file, char __user *user_buf, "%20s : %10u\n", "VO queued", priv->debug.tx_stats.queue_stats[WME_AC_VO]); + if (len > sizeof(buf)) + len = sizeof(buf); + return simple_read_from_buffer(user_buf, count, ppos, buf, len); } @@ -595,6 +601,9 @@ static ssize_t read_file_recv(struct file *file, char __user *user_buf, "%20s : %10u\n", "SKBs Dropped", priv->debug.rx_stats.skb_dropped); + if (len > sizeof(buf)) + len = sizeof(buf); + return simple_read_from_buffer(user_buf, count, ppos, buf, len); } |