If the temporary file gets truncated for any reason, die

instead of getting stuck in an infinite loop.

SVN-Revision: 2444

diff --git a/libarchive/archive_write_set_format_xar.c b/libarchive/archive_write_set_format_xar.c
index ebcd0932d74551e10cb0180e0f81f85847901294..28292d274d2db38f4e11251d93158aba21c5962d 100644 (file)
--- a/libarchive/archive_write_set_format_xar.c
+++ b/libarchive/archive_write_set_format_xar.c
@@ -1733,6 +1733,11 @@ copy_out(struct archive_write *a, uint64_t offset, uint64_t length)
                            (intmax_t)rs);
                        return (ARCHIVE_FATAL);
                }
+               if (rs == 0) {
+                       archive_set_error(&(a->archive), 0,
+                           "Truncated xar archive");
+                       return (ARCHIVE_FATAL);
+               }
                xar->wbuff_remaining -= rs;
                length -= rs;
                if (xar->wbuff_remaining == 0) {