From fb1856eabd2df39ea1cfd0253fd733f547f14435 Mon Sep 17 00:00:00 2001
From: Tim Kientzle <kientzle@FreeBSD.org>
Date: Mon, 13 Nov 2006 16:50:18 +0000
Subject: [PATCH] No change in functionality, but fill in a missing error
 message when reading a truncated tar archive.

---
 lib/libarchive/archive_read_support_format_tar.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/libarchive/archive_read_support_format_tar.c b/lib/libarchive/archive_read_support_format_tar.c
index 3d3a04a3137..5ad9f1cd6eb 100644
--- a/lib/libarchive/archive_read_support_format_tar.c
+++ b/lib/libarchive/archive_read_support_format_tar.c
@@ -497,7 +497,12 @@ archive_read_format_tar_read_data(struct archive *a,
 
 	if (tar->entry_bytes_remaining > 0) {
 		bytes_read = (a->compression_read_ahead)(a, buff, 1);
-		if (bytes_read <= 0)
+		if (bytes_read == 0) {
+			archive_set_error(a, ARCHIVE_ERRNO_MISC,
+			    "Truncated tar archive");
+			return (ARCHIVE_FATAL);
+		}
+		if (bytes_read < 0)
 			return (ARCHIVE_FATAL);
 		if (bytes_read > tar->entry_bytes_remaining)
 			bytes_read = tar->entry_bytes_remaining;