dovecot-2.2: lib: Fix hang in safe_sendfile on SmartOS

[dovecot at dovecot.org]

details:   http://hg.dovecot.org/dovecot-2.2/rev/c6554cb1961d
changeset: 19114:c6554cb1961d
user:      Sebastian Wiedenroth <sebastian.wiedenroth at skylime.net>
date:      Thu Jul 16 14:41:24 2015 +0200
description:
lib: Fix hang in safe_sendfile on SmartOS
The call to sendfile on SmartOS can fail with EOPNOTSUPP. This is a valid
error code and documented in the man page. This error code needs to be
handled or else dovecot will retry the sendfile call endlessly and hang.

diffstat:

 src/lib/sendfile-util.c |  2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diffs (12 lines):

diff -r fae5feef70af -r c6554cb1961d src/lib/sendfile-util.c
--- a/src/lib/sendfile-util.c	Mon Sep 07 22:14:18 2015 +0300
+++ b/src/lib/sendfile-util.c	Thu Jul 16 14:41:24 2015 +0200
@@ -116,7 +116,7 @@
 		if (errno == EINVAL) {
 			/* most likely trying to read past EOF */
 			ret = 0;
-		} else if (errno == EAFNOSUPPORT) {
+		} else if (errno == EAFNOSUPPORT || errno == EOPNOTSUPP) {
 			/* not supported, return Linux-like EINVAL so caller
 			   sees only consistent errnos. */
 			errno = EINVAL;