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Date:      Wed, 16 Jul 2014 08:58:38 +0000 (UTC)
From:      Konstantin Belousov <kib@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org
Subject:   svn commit: r268743 - stable/9/lib/libc/gen
Message-ID:  <201407160858.s6G8wcJs055771@svn.freebsd.org>

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Author: kib
Date: Wed Jul 16 08:58:38 2014
New Revision: 268743
URL: http://svnweb.freebsd.org/changeset/base/268743

Log:
  MFC r268467:
  Implement sysconf(_SC_GETGR_R_SIZE_MAX) and sysconf(_SC_GETPW_R_SIZE_MAX).

Modified:
  stable/9/lib/libc/gen/sysconf.c
Directory Properties:
  stable/9/lib/libc/   (props changed)

Modified: stable/9/lib/libc/gen/sysconf.c
==============================================================================
--- stable/9/lib/libc/gen/sysconf.c	Wed Jul 16 08:55:53 2014	(r268742)
+++ stable/9/lib/libc/gen/sysconf.c	Wed Jul 16 08:58:38 2014	(r268743)
@@ -367,11 +367,17 @@ yesno:
 		 * _POSIX_FILE_LOCKING, so we can't answer this one.
 		 */
 #endif
-#if _POSIX_THREAD_SAFE_FUNCTIONS > -1
+
+	/*
+	 * SUSv4tc1 says the following about _SC_GETGR_R_SIZE_MAX and
+	 * _SC_GETPW_R_SIZE_MAX:
+	 * Note that sysconf(_SC_GETGR_R_SIZE_MAX) may return -1 if
+	 * there is no hard limit on the size of the buffer needed to
+	 * store all the groups returned.
+	 */
 	case _SC_GETGR_R_SIZE_MAX:
 	case _SC_GETPW_R_SIZE_MAX:
-#error "somebody needs to implement this"
-#endif
+		return (-1);
 	case _SC_HOST_NAME_MAX:
 		return (MAXHOSTNAMELEN - 1); /* does not include \0 */
 	case _SC_LOGIN_NAME_MAX:



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