mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-03 04:01:43 +08:00
48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
/* Copyright (C) 1991, 1992 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 <errno.h>
|
|
#include <limits.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
/* Put the absolute pathname of the current working direction in BUF.
|
|
If successful, return BUF. If not, put an error message in
|
|
BUF and return NULL. BUF should be at least PATH_MAX bytes long. */
|
|
char *
|
|
DEFUN(getwd, (buf), char *buf)
|
|
{
|
|
if (buf == NULL)
|
|
{
|
|
errno = EINVAL;
|
|
return NULL;
|
|
}
|
|
|
|
#ifndef PATH_MAX
|
|
#define PATH_MAX 1024 /* Arbitrary; this function is unreliable. */
|
|
#endif
|
|
if (getcwd (buf, PATH_MAX) == NULL)
|
|
{
|
|
(void) strncpy (buf, strerror (errno), PATH_MAX);
|
|
return NULL;
|
|
}
|
|
|
|
return buf;
|
|
}
|