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Article #1012Re: Why use pwd(1) for getpwd(3C)? (Re: Why use find?)
From: John Cowan
Date: Thu, 11 Oct 1990 17:01
Date: Thu, 11 Oct 1990 17:01
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In article <14976@hydra.gatech.EDU> gt0178a@prism.gatech.EDU (Jim Burns) writes: >in article <1990Oct10.231857.11668@virtech.uucp>, cpcahil@virtech.uucp (Conor P. Cahill) says: >> I don't know the reason for making it a call to popen(), one reason may >> have been security (pwd could be a setuid pgm and do things that a >> function call couldn't). > >Not on my system (see below). And what about those shells that have pwd >builtin? My shell's pwd seems to work fine, and the shell isn't setuid >either. > >-rwxr-xr-x 1 root 16384 Nov 17 1989 /bin/pwd* >-rwxrwxr-x 2 root 152692 Sep 18 11:51 /usr/local/bin/ksh* Try saying 'chmod u-rwx .' and then '/bin/pwd'. You'll probably get something like "pwd: can't stat .", at least that's what I get. (This assumes your system doesn't have a built-in get[p]wd() call. If it does, all bets are off.) /bin/pwd should be setuid root so that it doesn't get this error. -- cowan@marob.masa.com (aka ...!hombre!marob!cowan) e'osai ko sarji la lojban
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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!crdgw1!rpi!zaphod.mps.ohio-state.edu!samsung!cs.utexas.edu!yale!cmcl2!phri!marob!cowan From: cowan@marob.masa.com (John Cowan) Newsgroups: comp.unix.programmer Subject: Re: Why use pwd(1) for getpwd(3C)? (Re: Why use find?) Message-ID: <2714A558.14A8@marob.masa.com> Date: 11 Oct 90 17:01:11 GMT References: <1990Oct10.231857.11668@virtech.uucp> <14976@hydra.gatech.EDU> Organization: The Logical Language Group, Inc. Lines: 23