From: Michihiro NAKAJIMA <ggcueroad@gmail.com>
Date: Sun, 3 Aug 2014 06:08:41 +0000 (+0900)
Subject: Properly set a error message when a client seeker callback is not
X-Git-Tag: v3.1.900a~253
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7b759a662c5816273691e594d2281686139fad1d;p=thirdparty%2Flibarchive.git

Properly set a error message when a client seeker callback is not
defined.
---

diff --git a/libarchive/archive_read.c b/libarchive/archive_read.c
index cbf1c9636..0882485f4 100644
--- a/libarchive/archive_read.c
+++ b/libarchive/archive_read.c
@@ -230,8 +230,11 @@ client_seek_proxy(struct archive_read_filter *self, int64_t offset, int whence)
 	 * other libarchive code that assumes a successful forward
 	 * seek means it can also seek backwards.
 	 */
-	if (self->archive->client.seeker == NULL)
+	if (self->archive->client.seeker == NULL) {
+		archive_set_error(&self->archive->archive, ARCHIVE_ERRNO_MISC,
+		    "Current client reader does not support seeking a device");
 		return (ARCHIVE_FAILED);
+	}
 	return (self->archive->client.seeker)(&self->archive->archive,
 	    self->data, offset, whence);
 }