[Patch v5 1/4] transport-helper: use xread instead of read

[randall.s.becker@rogers.com]

From: "Randall S. Becker" <randall.becker@nexbridge.ca>

This fix was needed on HPE NonStop NSE and NSX where SSIZE_MAX is less than
BUFFERSIZE resulting in EINVAL. The call to read in transport-helper.c
was the only place outside of wrapper.c where it is used instead of xread.

Signed-off-by: Randall S. Becker <rsbecker@nexbridge.com>
---
 transport-helper.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/transport-helper.c b/transport-helper.c
index bf225c698..5afead9f8 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -1225,9 +1225,8 @@ static int udt_do_read(struct unidirectional_transfer *t)
 		return 0;	/* No space for more. */
 
 	transfer_debug("%s is readable", t->src_name);
-	bytes = read(t->src, t->buf + t->bufuse, BUFFERSIZE - t->bufuse);
-	if (bytes < 0 && errno != EWOULDBLOCK && errno != EAGAIN &&
-		errno != EINTR) {
+	bytes = xread(t->src, t->buf + t->bufuse, BUFFERSIZE - t->bufuse);
+	if (bytes < 0 && errno != EINTR) {
 		error_errno(_("read(%s) failed"), t->src_name);
 		return -1;
 	} else if (bytes == 0) {
-- 
2.12.3