From d064d3e32bec66e5f8cc474be6fb0b0168f73bee Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Fri, 9 Feb 2001 06:43:59 +0000
Subject: Implement getdtablesize(), which is used by the rpc crap.  -Erik

---
 libc/sysdeps/linux/common/Makefile        | 10 +++++----
 libc/sysdeps/linux/common/getdtablesize.c | 34 +++++++++++++++++++++++++++++++
 libc/unistd/sysconf.c                     |  2 +-
 3 files changed, 41 insertions(+), 5 deletions(-)
 create mode 100644 libc/sysdeps/linux/common/getdtablesize.c

(limited to 'libc')

diff --git a/libc/sysdeps/linux/common/Makefile b/libc/sysdeps/linux/common/Makefile
index 80a173aa1..edaf5f895 100644
--- a/libc/sysdeps/linux/common/Makefile
+++ b/libc/sysdeps/linux/common/Makefile
@@ -25,10 +25,12 @@ TOPDIR=../../../
 include $(TOPDIR)Rules.mak
 LIBC=$(TOPDIR)libc.a
 
-CSRC=	_xmknod.c waitpid.c getdents.c kernel_version.c rewinddir.c statfix.c \
-	getdnnm.c libc_init.c seekdir.c telldir.c tell.c gethstnm.c mkfifo.c \
-	setegid.c wait.c errno.c closedir.c getpagesize.c opendir.c seteuid.c \
-	wait3.c dirfd.c isatty.c readdir.c setpgrp.c
+CSRC=	_xmknod.c waitpid.c getdents.c kernel_version.c rewinddir.c \
+	statfix.c getdnnm.c seekdir.c telldir.c tell.c gethstnm.c \
+	mkfifo.c setegid.c wait.c errno.c closedir.c getpagesize.c \
+	opendir.c seteuid.c wait3.c dirfd.c isatty.c readdir.c setpgrp.c \
+	getdtablesize.c
+
 COBJS=$(patsubst %.c,%.o, $(CSRC))
 
 NISRC= _fxstat.c _lxstat.c _xstat.c
diff --git a/libc/sysdeps/linux/common/getdtablesize.c b/libc/sysdeps/linux/common/getdtablesize.c
new file mode 100644
index 000000000..664881f2a
--- /dev/null
+++ b/libc/sysdeps/linux/common/getdtablesize.c
@@ -0,0 +1,34 @@
+/* Copyright (C) 1991, 1993, 1995, 1996, 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <limits.h>
+#include <unistd.h>
+#include <sys/resource.h>
+
+/* Return the maximum number of file descriptors
+   the current process could possibly have.  */
+int getdtablesize (void)
+{
+  struct rlimit ru;
+
+  /* This should even work if `getrlimit' is not implemented.  POSIX.1
+     does not define this function but we will generate a stub which
+     returns -1.  */
+  return getrlimit (RLIMIT_NOFILE, &ru) < 0 ? OPEN_MAX : ru.rlim_cur;
+}
+
diff --git a/libc/unistd/sysconf.c b/libc/unistd/sysconf.c
index 5d8c7fc4b..50d8e4bb5 100644
--- a/libc/unistd/sysconf.c
+++ b/libc/unistd/sysconf.c
@@ -98,7 +98,7 @@ long int sysconf(int name)
 #endif
 
     case _SC_OPEN_MAX:
-#if 0
+#if 1
       RETURN_FUNCTION(getdtablesize());
 #else
       RETURN_NEG_1;
-- 
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