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authorEric Andersen <andersen@codepoet.org>2001-02-09 06:43:59 +0000
committerEric Andersen <andersen@codepoet.org>2001-02-09 06:43:59 +0000
commitd064d3e32bec66e5f8cc474be6fb0b0168f73bee (patch)
tree9dcc83fdec23a3bb1c748557ba08ab83fb4e58d9 /libc/sysdeps/linux/common
parent411597d4f47de6b37275ee4fdf9fc45cc2a30fcb (diff)
Implement getdtablesize(), which is used by the rpc crap.
-Erik
Diffstat (limited to 'libc/sysdeps/linux/common')
-rw-r--r--libc/sysdeps/linux/common/Makefile10
-rw-r--r--libc/sysdeps/linux/common/getdtablesize.c34
2 files changed, 40 insertions, 4 deletions
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;
+}
+