Message ID | 1345043344-3978-9-git-send-email-stefanha@linux.vnet.ibm.com |
---|---|
State | New |
Headers | show |
diff --git a/iov.c b/iov.c index b333061..60705c7 100644 --- a/iov.c +++ b/iov.c @@ -146,6 +146,13 @@ ssize_t iov_send_recv(int sockfd, struct iovec *iov, unsigned iov_cnt, { ssize_t ret; unsigned si, ei; /* start and end indexes */ + if (bytes == 0) { + /* Catch the do-nothing case early, as otherwise we will pass an + * empty iovec to sendmsg/recvmsg(), and not all implementations + * accept this. + */ + return 0; + } /* Find the start position, skipping `offset' bytes: * first, skip all full-sized vector elements, */