From: Alexandru Ardelean <ardeleanalex@gmail.com>
Date: Fri, 27 Jun 2014 16:11:42 +0000 (+0300)
Subject: libubus: fix writev_retry() function when writing large packets
X-Git-Url: http://git.openwrt.org/?p=project%2Fubus.git;a=commitdiff_plain;h=5db90dbc941da701c397b04ddce2515a231df59b

libubus: fix writev_retry() function when writing large packets

Seems this bug stayed hidden for a while, because the write/sendmsg function
can send up to ~200k in one send, so it looked at first why there was
some data mismatch.
---

diff --git a/libubus-io.c b/libubus-io.c
index f38403f..31dad27 100644
--- a/libubus-io.c
+++ b/libubus-io.c
@@ -111,7 +111,10 @@ static int writev_retry(int fd, struct iovec *iov, int iov_len, int sock_fd)
 			if (!iov_len)
 				return len;
 		}
+		iov->iov_base += cur_len;
 		iov->iov_len -= cur_len;
+		msghdr.msg_iov = iov;
+		msghdr.msg_iovlen = iov_len;
 	} while (1);
 
 	/* Should never reach here */