Date: Wed, 12 Sep 2012 13:23:29 GMT From: Ed Maste <emaste@FreeBSD.org> To: FreeBSD-gnats-submit@FreeBSD.org Subject: standards/171572: ptsname(-1) returns errno 0 Message-ID: <201209121323.q8CDNTWt085384@freefall.freebsd.org> Resent-Message-ID: <201209121330.q8CDU2Zw029565@freefall.freebsd.org>
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>Number: 171572
>Category: standards
>Synopsis: ptsname(-1) returns errno 0
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-standards
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Sep 12 13:30:01 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator: Ed Maste
>Release: FreeBSD 9.0-STABLE i386
>Organization:
FreeBSD
>Environment:
System: FreeBSD freefall.freebsd.org 9.0-STABLE FreeBSD 9.0-STABLE #6 r235139: Tue May 8 21:19:03 UTC 2012 simon@freefall.freebsd.org:/usr/obj/usr/src/sys/FREEFALL i386
>Description:
ptsname(fildes) is documented to set errno to EBADF if fildes is not a
valid open file descriptor, but ptsname(-1) returns errno = 0.
>How-To-Repeat:
==[test-ptsname.c]==
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
char *name;
errno = 0;
name = ptsname(-1);
printf("ptsname(-1) returns %p (%s), errno is %d\n", name,
name ? name : "", errno);
}
====
[emaste@freefall ~]$ ./test-ptsname
ptsname(-1) returns 0x0 (), errno is 0
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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