From owner-freebsd-bugs  Mon May 14  2:10: 6 2001
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Date: Mon, 14 May 2001 02:10:02 -0700 (PDT)
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From: Bruce Evans <bde@zeta.org.au>
Subject: Re: bin/27258: getty didn't check if if= isn't empty
Reply-To: Bruce Evans <bde@zeta.org.au>
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The following reply was made to PR bin/27258; it has been noted by GNATS.

From: Bruce Evans <bde@zeta.org.au>
To: Cyrille Lefevre <clefevre@poboxes.com>
Cc: FreeBSD-gnats-submit@FreeBSD.ORG
Subject: Re: bin/27258: getty didn't check if if= isn't empty
Date: Mon, 14 May 2001 19:01:55 +1000 (EST)

 On 14 May 2001, Cyrille Lefevre wrote:
 
 > Bruce Evans <bde@zeta.org.au> writes:
 > 
 > [snip]
 > > > -		if (first_time && IF) {
 > > > +		if (first_time && IF && *IF) {
 > > >  			int fd;
 > > >  
 > > >  			if ((fd = open(IF, O_RDONLY)) != -1) {
 > > 
 > > This is safer than `:if=/bin/sh:'.  It just causes the open to fail
 > > just like for any other nonexistent file (POSIX standard).
 > 
 > yes, but this syscall isn't needed, so, why not to get rid of it if
 > if= is empty ?
 
 It takes more code, and takes longer in the usual case.
 
 Bruce
 

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