netdev - [PATCH iproute2] ip: drop 2-char command assumption

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Sat, 17 Apr 2021 20:49:58 -0700
From:   Tony Ambardar <tony.ambardar@...il.com>
To:     Stephen Hemminger <stephen@...workplumber.org>
Cc:     Tony Ambardar <Tony.Ambardar@...il.com>, netdev@...r.kernel.org
Subject: [PATCH iproute2] ip: drop 2-char command assumption

The 'ip' utility hardcodes the assumption of being a 2-char command, where
any follow-on characters are passed as an argument:

  $ ./ip-full help
  Object "-full" is unknown, try "ip help".

This confusing behaviour isn't seen with 'tc' for example, and was added in
a 2005 commit without documentation. It was noticed during testing of 'ip'
variants built/packaged with different feature sets (e.g. w/o BPF support).

Drop the related code.

Fixes: 351efcde4e62 ("Update header files to 2.6.14")
Signed-off-by: Tony Ambardar <Tony.Ambardar@...il.com>
---
 ip/ip.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/ip/ip.c b/ip/ip.c
index 4cf09fc3..631ce903 100644
--- a/ip/ip.c
+++ b/ip/ip.c
@@ -313,9 +313,6 @@ int main(int argc, char **argv)

 	rtnl_set_strict_dump(&rth);

-	if (strlen(basename) > 2)
-		return do_cmd(basename+2, argc, argv);
-
 	if (argc > 1)
 		return do_cmd(argv[1], argc-1, argv+1);

-- 
2.25.1