export iov_send_recv() and use it in iov_send() and iov_recv()

Rename do_sendv_recvv() to iov_send_recv(), change its last arg
(do_send) from int to bool, export it in iov.h, and made the two
callers of it (iov_send() and iov_recv()) to be trivial #defines
just adding 5th arg.

iov_send_recv() will be used later.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

1 files changed, 7 insertions, 3 deletions

diff --git a/iov.h b/iov.h
index 5aa2f455de..9b6a883922 100644
--- a/iov.h
+++ b/iov.h
@@ -60,7 +60,7 @@ size_t iov_memset(const struct iovec *iov, const unsigned int iov_cnt,
  * `offset' bytes in the beginning of iovec buffer are skipped and
  * next `bytes' bytes are used, which must be within data of iovec.
  *
- *   r = iov_send(sockfd, iov, offset, bytes);
+ *   r = iov_send_recv(sockfd, iov, offset, bytes, true);
  *
  * is logically equivalent to
  *
@@ -69,8 +69,12 @@ size_t iov_memset(const struct iovec *iov, const unsigned int iov_cnt,
  *   r = send(sockfd, buf, bytes, 0);
  *   free(buf);
  */
-ssize_t iov_recv(int sockfd, struct iovec *iov, size_t offset, size_t bytes);
-ssize_t iov_send(int sockfd, struct iovec *iov, size_t offset, size_t bytes);
+ssize_t iov_send_recv(int sockfd, struct iovec *iov,
+                      size_t offset, size_t bytes, bool do_send);
+#define iov_recv(sockfd, iov, offset, bytes) \
+  iov_send_recv(sockfd, iov, offset, bytes, false)
+#define iov_send(sockfd, iov, offset, bytes) \
+  iov_send_recv(sockfd, iov, offset, bytes, true)
 
 /**
  * Produce a text hexdump of iovec `iov' with `iov_cnt' number of elements