pmaports/modem/tqftpserv/0001-tqftpserv-allow-sending-data-packet-with-0-byte-data.patch
Luca Weiss d7c64500ee
modem/tqftpserv: upgrade and add patches for rsize & seek option handling (MR 4747)
Makes modem work on fairphone-fp4 (sm6350/sm7225) and fairphone-fp5
(sc7280/qcm6490)

Patches are submitted upstream:
https://github.com/andersson/tqftpserv/pull/13
[ci:skip-build]: already built successfully in CI
2024-03-06 01:50:52 +01:00

42 lines
1.4 KiB
Diff

From 891ed4143eada69d031360c214142c8e46222e8a Mon Sep 17 00:00:00 2001
From: Luca Weiss <luca.weiss@fairphone.com>
Date: Fri, 19 Jan 2024 17:09:17 +0100
Subject: [PATCH 1/5] tqftpserv: allow sending data packet with 0-byte data
payload
If the client requests a file that's completely empty, it makes sense to
send a response to that request with - well - 0 bytes of data and just
the 4-byte header.
But also if the client requests for example a file of rsize=53760 and
blksize=7680, then will send 7 full packets of data in the window, but
afterwards we still need to send an empty packet (just the 4 bytes of
header) to make sure the client understands that we've sent all the
requested data. Otherwise it's going to time out and re-request the
blocks and we're stuck in a loop.
So consider pread return value of 0 to not be an error and send a
response packet back.
---
tqftpserv.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/tqftpserv.c b/tqftpserv.c
index 4ba287c..9d1a2b3 100644
--- a/tqftpserv.c
+++ b/tqftpserv.c
@@ -89,9 +89,8 @@ static ssize_t tftp_send_data(struct tftp_client *client,
*p++ = block & 0xff;
len = pread(client->fd, p, client->blksize, offset);
- if (len <= 0) {
- if (len < 0)
- printf("[TQFTP] failed to read data\n");
+ if (len < 0) {
+ printf("[TQFTP] failed to read data\n");
free(buf);
return len;
}
--
2.44.0