From: Michael Tremer <michael.tremer@ipfire.org>
Date: Wed, 1 Nov 2023 19:05:53 +0000 (+0000)
Subject: xfer: Correctly truncate if the download failed
X-Git-Tag: 0.9.30~1323
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=92cc235ad3b8fcff2b0bdfb295f17140894c4d75;p=pakfire.git

xfer: Correctly truncate if the download failed

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/libpakfire/xfer.c b/src/libpakfire/xfer.c
index dee5f7e85..975ab7c7c 100644
--- a/src/libpakfire/xfer.c
+++ b/src/libpakfire/xfer.c
@@ -743,13 +743,21 @@ int pakfire_xfer_fail(struct pakfire_xfer* xfer, int code) {
 
 	CTX_DEBUG(xfer->ctx, "Xfer failed\n");
 
-	// Get file descriptor
-	int fd = fileno(xfer->fin);
+	// Throw away any downloaded data
+	if (xfer->fin) {
+		// Get file descriptor
+		int fd = fileno(xfer->fin);
 
-	// Truncate downloaded data
-	r = ftruncate(fd, 0);
-	if (r)
-		return r;
+		// Truncate downloaded data
+		if (fd >= 0) {
+			r = ftruncate(fd, 0);
+			if (r)
+				return r;
+		}
+
+		// Rewind
+		rewind(xfer->fin);
+	}
 
 	// Did we use a mirror?
 	if (xfer->mirror) {