From: Timo Sirainen <timo.sirainen@open-xchange.com>
Date: Mon, 3 Jun 2024 20:23:40 +0000 (+0300)
Subject: lib: istream-seekable - Assert that write() won't return 0
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6afc5b06a543c936aa428d758d7f8bad3f13fb66;p=thirdparty%2Fdovecot%2Fcore.git

lib: istream-seekable - Assert that write() won't return 0
---

diff --git a/src/lib/istream-seekable.c b/src/lib/istream-seekable.c
index 9c7d294052..b753c91991 100644
--- a/src/lib/istream-seekable.c
+++ b/src/lib/istream-seekable.c
@@ -306,9 +306,11 @@ static ssize_t i_stream_seekable_read(struct istream_private *stream)
 
 		/* save to our file */
 		data = i_stream_get_data(sstream->cur_input, &size);
+		i_assert(size > 0);
 		ret = write(sstream->fd, data, size);
-		if (ret <= 0) {
-			if (ret < 0 && !ENOSPACE(errno)) {
+		i_assert(ret != 0);
+		if (ret < 0) {
+			if (!ENOSPACE(errno)) {
 				i_error("istream-seekable: write_full(%s) failed: %m",
 					sstream->temp_path);
 			}