122 lines
3.0 KiB
C
122 lines
3.0 KiB
C
/*
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* CU sudo version 1.3.6
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 1, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Please send bugs, changes, problems to sudo-bugs@cs.colorado.edu
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*
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*******************************************************************
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*
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* This module contains getwd(3) for those systems that lack it.
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* getwd(3) returns a pointer to the current working dir. It uses
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* path as a copy-out parameter.
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*
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* Todd C. Miller (millert@colorado.edu) Fri Jun 3 18:32:19 MDT 1994
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*/
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#ifndef lint
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static char rcsid[] = "$Id$";
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#endif /* lint */
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#include "config.h"
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#include <stdio.h>
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#ifdef STDC_HEADERS
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#include <stdlib.h>
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#endif /* STDC_HEADERS */
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif /* HAVE_UNISTD_H */
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif /* HAVE_STRING_H */
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif /* HAVE_STRINGS_H */
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/param.h>
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#include <netinet/in.h>
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#include <pathnames.h>
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#include "compat.h"
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#ifndef STDC_HEADERS
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extern char *strcpy __P((char *, const char *));
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extern int strlen __P((const char *));
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extern char *getwd __P((char *));
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extern FILE *popen __P((const char *, const char *));
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extern int pclose __P((FILE *));
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extern char *fgets __P((char *, int, FILE *));
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#endif /* !STDC_HEADERS */
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#ifndef _PATH_PWD
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#define _PATH_PWD "pwd"
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#endif /* _PATH_PWD */
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/*
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* Since we can't count on this being defined...
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*/
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extern int errno;
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/******************************************************************
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*
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* getwd()
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*
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* getwd() returns a pointer to the current working dir. It uses
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* path as a copy-out parameter.
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* getwd() will use getcwd() if available, else it will use pwd(1).
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*/
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char * getwd(path)
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char * path; /* path to copy into */
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{
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#ifndef HAVE_GETCWD
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char buf[MAXPATHLEN+1]; /* temp buffer */
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FILE * pwd; /* for popen */
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#endif /* HAVE_GETCWD */
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if (path == NULL) {
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errno = EINVAL;
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return(NULL);
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}
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#ifdef HAVE_GETCWD
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return(getcwd(path, MAXPATHLEN));
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#else
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/*
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* open a pipe to pwd and read a line
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*/
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if (!(pwd = popen(_PATH_PWD, "r")))
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return(NULL);
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if (!fgets(buf, sizeof(buf), pwd)) {
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errno = EACCES; /* what an assumption... */
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pclose(pwd);
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return(NULL);
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}
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pclose(pwd);
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buf[strlen(buf)-1] = '\0'; /* remove newline */
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(void) strcpy(path, buf);
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return(path);
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#endif /* HAVE_GETCWD */
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}
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