Hi, is there possible to fail as early as possible during e.g. trying of
--list & --verify the archive? Something like the patch attached?
If not, tar may fail hitting the abort() call:
$ tar -czf /tmp/test.tgz FILE
$ tar -tWvf /tmp/test.tgz
tar: This does not look like a tar archive
tar: Skipping to next header
Aborted (core dumped)
Original report is here:
http://bugzilla.redhat.com/977807
Pavel
>From 6a5eb6b3a15be6649cff10a8978efc1a1747544c Mon Sep 17 00:00:00 2001
From: Pavel Raiskup <prais...@redhat.com>
Date: Wed, 26 Jun 2013 16:03:01 +0200
Subject: [PATCH] tar: fail early when --verify & --list passed
* src/tar.c (decode_options): Fail with USAGE_ERROR when -W and
incompatible operation mode is passed.
---
src/tar.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/src/tar.c b/src/tar.c
index c29b4fa..d362865 100644
--- a/src/tar.c
+++ b/src/tar.c
@@ -2574,6 +2574,10 @@ decode_options (int argc, char **argv)
USAGE_ERROR ((0, 0, _("Cannot verify multi-volume archives")));
if (use_compress_program_option)
USAGE_ERROR ((0, 0, _("Cannot verify compressed archives")));
+ if (subcommand_option != CREATE_SUBCOMMAND
+ && subcommand_option != APPEND_SUBCOMMAND
+ && subcommand_option != CAT_SUBCOMMAND)
+ USAGE_ERROR ((0, 0, _("Cannot verify, do you want --diff ?")));
}
if (use_compress_program_option)
--
1.8.2.1
