From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:38475) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V6Gc2-00010P-7z for qemu-devel@nongnu.org; Mon, 05 Aug 2013 04:58:04 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1V6Gbu-0004Rs-Nt for qemu-devel@nongnu.org; Mon, 05 Aug 2013 04:57:58 -0400 Received: from mx1.redhat.com ([209.132.183.28]:12987) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V6Gbu-0004Rc-Go for qemu-devel@nongnu.org; Mon, 05 Aug 2013 04:57:50 -0400 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r758vni4031494 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Mon, 5 Aug 2013 04:57:49 -0400 From: Kevin Wolf Date: Mon, 5 Aug 2013 10:57:40 +0200 Message-Id: <1375693060-16407-1-git-send-email-kwolf@redhat.com> Subject: [Qemu-devel] [PATCH for-1.6] qemu-img: Error out for excess arguments List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, stefanha@redhat.com Don't silently ignore excess arguments at the end of the command line, but error out instead. This can catch typos like 'resize test.img + 1G', which doesn't increase the image size by 1G as intended, but truncates the image to 1G. Even for less dangerous commands, the old behaviour is confusing. Signed-off-by: Kevin Wolf --- qemu-img.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/qemu-img.c b/qemu-img.c index c55ca5c..dece1b3 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -396,6 +396,9 @@ static int img_create(int argc, char **argv) } img_size = (uint64_t)sval; } + if (optind != argc) { + help(); + } if (options && is_help_option(options)) { return print_block_option_help(filename, fmt); @@ -573,7 +576,7 @@ static int img_check(int argc, char **argv) break; } } - if (optind >= argc) { + if (optind != argc - 1) { help(); } filename = argv[optind++]; @@ -684,7 +687,7 @@ static int img_commit(int argc, char **argv) break; } } - if (optind >= argc) { + if (optind != argc - 1) { help(); } filename = argv[optind++]; @@ -930,7 +933,7 @@ static int img_compare(int argc, char **argv) } - if (optind > argc - 2) { + if (optind != argc - 2) { help(); } filename1 = argv[optind++]; @@ -1741,7 +1744,7 @@ static int img_info(int argc, char **argv) break; } } - if (optind >= argc) { + if (optind != argc - 1) { help(); } filename = argv[optind++]; @@ -1842,7 +1845,7 @@ static int img_snapshot(int argc, char **argv) } } - if (optind >= argc) { + if (optind != argc - 1) { help(); } filename = argv[optind++]; @@ -1953,7 +1956,7 @@ static int img_rebase(int argc, char **argv) progress = 0; } - if ((optind >= argc) || (!unsafe && !out_baseimg)) { + if ((optind != argc - 1) || (!unsafe && !out_baseimg)) { help(); } filename = argv[optind++]; @@ -2232,7 +2235,7 @@ static int img_resize(int argc, char **argv) break; } } - if (optind >= argc) { + if (optind != argc - 1) { help(); } filename = argv[optind++]; -- 1.8.1.4