Home page logo
/

bugtraq logo Bugtraq mailing list archives

Re: Solaris2 libc/getopt bug
From: casper () HOLLAND SUN COM (Casper Dik)
Date: Wed, 5 Feb 1997 13:47:29 +0100


Does anybody have source for a suitable replacement getopt.c?
The Solaris2.5.1 version (at least) has a symbol _sp which seems
to be needed by several other system installed binaries. So far,
I've been unable to determine what this symbol is used for. If
somebody already has a suitable C source, I'm sure there are several
that would benefit if it were posted here.  I'm not expecting
Sun to release a patch for a couple of weeks.

Well, here's another workaround.


The problem with getopt is in the error message that is printed by default
when an option error is discovered.

You can suppress this error by setting "opterr", a global libc variable to 0.

So what is simpler than this:


        adb -w /lib/libc.so.1
        opterr?W0
        opterr:         0x1             =       0x0


Con:
        you won't get any "... : illegal option -- z" messages anymore.
        (but programs typically print a usage afterwards)

Pro:
        You won't overflow buffers.


I don't think many programs will have "opterr  = 1 as that is the default.

Casper



  By Date           By Thread  

Current thread:
  • Re: Solaris2 libc/getopt bug Casper Dik (Feb 05)
[ Nmap | Sec Tools | Mailing Lists | Site News | About/Contact | Advertising | Privacy ]