From: Timo Sirainen <tss@iki.fi>
Date: Fri, 5 Feb 2010 23:06:47 +0000 (+0200)
Subject: ostream: Added default failure handling if write_at() isn't implemented.
X-Git-Tag: 2.0.beta3~157
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=40fdb94d4db3d81e39f0f6655269ea7f6c268f32;p=thirdparty%2Fdovecot%2Fcore.git

ostream: Added default failure handling if write_at() isn't implemented.

--HG--
branch : HEAD
---

diff --git a/src/lib/ostream.c b/src/lib/ostream.c
index d0922dea45..8b286f8b47 100644
--- a/src/lib/ostream.c
+++ b/src/lib/ostream.c
@@ -212,6 +212,11 @@ int o_stream_pwrite(struct ostream *stream, const void *data, size_t size,
 	if (unlikely(stream->closed))
 		return -1;
 
+	if (stream->real_stream->write_at == NULL) {
+		/* stream doesn't support seeking */
+		stream->stream_errno = EPIPE;
+		return -1;
+	}
 	ret = stream->real_stream->write_at(stream->real_stream,
 					    data, size, offset);
 	if (unlikely(ret < 0)) {