[PATCH 01/13] net: tftp: Increase TFTP pkt string length to include null character

[Chintan Vankar]

'sprintf()' function defined in 'tiny-printf.c' is returning length of the
string excluding null character. Fix this by increasing TFTP pkt length by
1 to avoid TFTP error of request being not-null terminated while
requesting length of packet.

Signed-off-by: Chintan Vankar <c-vankar at ti.com>
---
 net/tftp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/tftp.c b/net/tftp.c
index 704b20b4ff8..db1d4aacb0e 100644
--- a/net/tftp.c
+++ b/net/tftp.c
@@ -347,11 +347,11 @@ static void tftp_send(void)
 		pkt += strlen((char *)pkt) + 1;
 #ifdef CONFIG_TFTP_TSIZE
 		pkt += sprintf((char *)pkt, "tsize%c%u%c",
-				0, net_boot_file_size, 0);
+				0, net_boot_file_size, 0) + 1;
 #endif
 		/* try for more effic. blk size */
 		pkt += sprintf((char *)pkt, "blksize%c%d%c",
-				0, tftp_block_size_option, 0);
+				0, tftp_block_size_option, 0) + 1;
 
 		/* try for more effic. window size.
 		 * Implemented only for tftp get.
@@ -359,7 +359,7 @@ static void tftp_send(void)
 		 */
 		if (tftp_state == STATE_SEND_RRQ && tftp_window_size_option > 1)
 			pkt += sprintf((char *)pkt, "windowsize%c%d%c",
-					0, tftp_window_size_option, 0);
+					0, tftp_window_size_option, 0) + 1;
 		len = pkt - xp;
 		break;
 
-- 
2.34.1