glibc/posix/confstr.c

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1995-02-18 02:27:10 +01:00
/* Copyright (C) 1991 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., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#include <stddef.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <confstr.h>
/* If BUF is not NULL, fill in at most LEN characters of BUF
with the value corresponding to NAME. Return the number
of characters required to hold NAME's entire value. */
size_t
DEFUN(confstr, (name, buf, len),
int name AND char *buf AND size_t len)
{
CONST char *string;
size_t string_len;
switch (name)
{
case _CS_PATH:
{
static CONST char cs_path[] = CS_PATH;
string = cs_path;
string_len = sizeof(cs_path);
}
break;
default:
errno = EINVAL;
return 0;
}
if (buf != NULL)
(void) strncpy(buf, string, len);
return string_len;
}