Bug 332531 – ifconfig returns invalid exit code when incorrect netmask is given

Bug 332531 - ifconfig returns invalid exit code when incorrect netmask is given

Summary:	ifconfig returns invalid exit code when incorrect netmask is given

Status:	CLOSED NOTABUG

Aliases:	None

Product:	Red Hat Enterprise Linux 4
Classification:	Red Hat
Component:	net-tools (Show other bugs)
Sub Component:
Version:	4.5
Hardware:	All Linux

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Zdenek Prikryl
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Reported:	2007-10-15 10:16 EDT by Michal Marciniszyn
Modified:	2014-02-10 18:03 EST (History)
CC List:	1 user (show)

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Doc Type:	Bug Fix
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Last Closed:	2008-09-16 10:51:34 EDT
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Description Michal Marciniszyn 2007-10-15 10:16:04 EDT

Description of problem:
If we try to change netmask of the interface and we choose incorrect one (i.e.
255.255.252.255), ifconfig shows us warning, but exits with exit code 0.

Version-Release number of selected component (if applicable):
rhel 4.5

How reproducible:
always


Steps to Reproduce:
ifconfig eth0 ip_addres netmask 255.255.252.255
echo $?
  
Actual results:
0

Expected results:
non-zero exit code

Additional info:

Comment 1 Zdenek Prikryl 2008-09-16 10:51:34 EDT

ifcondig uses ioct() to setting netmask. If ioctl() successes, then ifconfig returns 0. In this case, ioctl() really successes, so ifconfig returns zero. In my opinion this is not a bug but a feature.

Zdenek

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