dload: delete zero length downloads on curl error

In the case of a non-operation (e.g. DNS resolver error), delete the
leftover 0 byte .part file.

Signed-off-by: Dave Reisner <dreisner@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/libalpm/dload.c b/lib/libalpm/dload.c
index c8f52c48..98a7cf85 100644
--- a/lib/libalpm/dload.c
+++ b/lib/libalpm/dload.c
@@ -319,6 +319,10 @@ static int curl_download_internal(struct dload_payload *payload,
 		case CURLE_ABORTED_BY_CALLBACK:
 			goto cleanup;
 		default:
+			/* delete zero length downloads */
+			if(stat(tempfile, &st) == 0 && st.st_size == 0) {
+				payload->unlink_on_fail = 1;
+			}
 			if(!payload->errors_ok) {
 				handle->pm_errno = ALPM_ERR_LIBCURL;
 				_alpm_log(handle, ALPM_LOG_ERROR, _("failed retrieving file '%s' from %s : %s\n"),