From: Matteo Croce <mcr...@microsoft.com>
ip has an ancient behaviour of looking at its program name to determine
the command to run. If the name is longer than 2 characters, the first two
letters are stripped and the others are interpreted as the command name:
$ ln -s /sbin/ip iproute
$ ln -s /sbin/ip ipa
$ ./iproute
default via 192.168.55.1 dev wlp0s20f3 proto dhcp metric 600
192.168.55.0/24 dev wlp0s20f3 proto kernel scope link src 192.168.55.26
metric 600
192.168.122.0/24 dev virbr0 proto kernel scope link src 192.168.122.1
linkdown
$ ./ipa show dev lo
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group
default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
This creates problems when the ip binary is renamed. For example, Yocto
renames it to 'ip.iproute2' when also the busybox implementation is
present, giving the following error:
$ ip.iproute2
Object ".iproute2" is unknown, try "ip help".
Since noone is using it, remove this undocumented feature.
Signed-off-by: Matteo Croce <mcr...@microsoft.com>
---
ip/ip.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/ip/ip.c b/ip/ip.c
index 40d2998a..9b772307 100644
--- a/ip/ip.c
+++ b/ip/ip.c
@@ -311,9 +311,6 @@ 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);
--
2.29.2
