From:	Andrew Crabtree <andrewc AT typhoon DOT rose DOT hp DOT com>
Message-Id:	<199805271842.AA296474555@typhoon.rose.hp.com>
Subject:	Re: BUG in readdir libc function
To:	nate AT cartsys DOT com (Nate Eldredge)
Date:	Wed, 27 May 1998 11:42:34 PDT
Cc:	erikyyy AT studbox DOT uni-stuttgart DOT de, djgpp-workers AT delorie DOT com
In-Reply-To:	<19980527010023.AAO19094@ppp114.cartsys.com>; from "Nate Eldredge" at May 26, 98 6:01 pm
Reply-To:	andrewc AT rosemail DOT rose DOT hp DOT com

> >readdir DOESN'T SET errno TO 0, if it returns 0 and the
> >directory is at its end !!!!!!!!!!!!!!
Sounds typical.

> Can somebody check what POSIX has to say about this?
OK (hand transcribed) -

ISO/IEC 9945-1 : 1990
IEEE Std 1003.1 - 1990

5.1.2.3 Returns
<...>
Upons successful completioon, readdir() returns a pointer to an object
of type struct dirent.  When an error is encountered, a value of NULL is 
returned and errno is set to indicate the error.  When the end of the 
directory is encountered, a value of 
NULL is returned and errno is unchanged bu this function call.

> Thus, you can get the desired behavior by setting `errno=0' 
> yourself beforehand. Is that what one's supposed to do?
Seems like that would be the way to do it.

Andy

--
_______       ___________________________________________________________
           /                       	                  Andrew Crabtree 
          /                          	      Workgroup Networks Division 
         ____       ___  /                                Hewlett-Packard 
        /     /    /    /   		                    Roseville, CA 
     __/   __/    _____/                                     916/785-1675
                 /                           andrewc AT rosemail DOT rose DOT hp DOT com
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