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/*
* CU sudo version 1.4
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 1, or (at your option)
* any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Please send bugs, changes, problems to sudo-bugs@cs.colorado.edu
*
*******************************************************************
*
* This module contains getwd(3) for those systems that lack it.
* getwd(3) returns a pointer to the current working dir. It uses
* path as a copy-out parameter.
*
* Todd C. Miller (millert@colorado.edu) Fri Jun 3 18:32:19 MDT 1994
*/
#ifndef lint
static char rcsid[] = "$Id$";
#endif /* lint */
#include "config.h"
#include <stdio.h>
#ifdef STDC_HEADERS
#include <stdlib.h>
#endif /* STDC_HEADERS */
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_UNISTD_H */
#ifdef HAVE_STRING_H
#include <string.h>
#endif /* HAVE_STRING_H */
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif /* HAVE_STRINGS_H */
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <netinet/in.h>
#include <pathnames.h>
#include "compat.h"
#ifndef STDC_HEADERS
extern char *strcpy __P((char *, const char *));
extern int strlen __P((const char *));
extern char *getwd __P((char *));
extern FILE *popen __P((const char *, const char *));
extern int pclose __P((FILE *));
extern char *fgets __P((char *, int, FILE *));
#endif /* !STDC_HEADERS */
#ifndef _PATH_PWD
#define _PATH_PWD "pwd"
#endif /* _PATH_PWD */
/*
* Since we can't count on this being defined...
*/
extern int errno;
/******************************************************************
*
* getwd()
*
* getwd() returns a pointer to the current working dir. It uses
* path as a copy-out parameter.
* getwd() will use getcwd() if available, else it will use pwd(1).
*/
char * getwd(path)
char * path; /* path to copy into */
{
#ifndef HAVE_GETCWD
char buf[MAXPATHLEN+1]; /* temp buffer */
FILE * pwd; /* for popen */
#endif /* HAVE_GETCWD */
if (path == NULL) {
errno = EINVAL;
return(NULL);
}
#ifdef HAVE_GETCWD
return(getcwd(path, MAXPATHLEN));
#else
/*
* open a pipe to pwd and read a line
*/
if (!(pwd = popen(_PATH_PWD, "r")))
return(NULL);
if (!fgets(buf, sizeof(buf), pwd)) {
errno = EACCES; /* what an assumption... */
pclose(pwd);
return(NULL);
}
pclose(pwd);
buf[strlen(buf)-1] = '\0'; /* remove newline */
(void) strcpy(path, buf);
return(path);
#endif /* HAVE_GETCWD */
}
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