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Annotation of GNUtools/libg++/libiberty/getcwd.c, revision 1.1.1.1

1.1       root        1: /* Emulate getcwd using getwd.
                      2:    Copyright 1991 Free Software Foundation, Inc.
                      3: 
                      4: This file is part of the libiberty library.
                      5: Libiberty is free software; you can redistribute it and/or
                      6: modify it under the terms of the GNU Library General Public
                      7: License as published by the Free Software Foundation; either
                      8: version 2 of the License, or (at your option) any later version.
                      9: 
                     10: Libiberty is distributed in the hope that it will be useful,
                     11: but WITHOUT ANY WARRANTY; without even the implied warranty of
                     12: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
                     13: Library General Public License for more details.
                     14: 
                     15: You should have received a copy of the GNU Library General Public
                     16: License along with libiberty; see the file COPYING.LIB.  If
                     17: not, write to the Free Software Foundation, Inc., 675 Mass Ave,
                     18: Cambridge, MA 02139, USA.  */
                     19: 
                     20: /*
                     21: 
                     22: NAME
                     23: 
                     24:        getcwd -- get absolute pathname for current working directory
                     25: 
                     26: SYNOPSIS
                     27: 
                     28:        char *getcwd (char pathname[len], len)
                     29: 
                     30: DESCRIPTION
                     31: 
                     32:        Copy the absolute pathname for the current working directory into
                     33:        the supplied buffer and return a pointer to the buffer.  If the 
                     34:        current directory's path doesn't fit in LEN characters, the result
                     35:        is NULL and errno is set.
                     36: 
                     37: BUGS
                     38: 
                     39:        Emulated via the getwd() call, which is reasonable for most
                     40:        systems that do not have getcwd().
                     41: 
                     42: */
                     43: 
                     44: #include <sys/param.h>
                     45: #include <errno.h>
                     46: 
                     47: extern char *getwd ();
                     48: extern int errno;
                     49: 
                     50: #ifndef MAXPATHLEN
                     51: #define MAXPATHLEN 1024
                     52: #endif
                     53: 
                     54: char *
                     55: getcwd (buf, len)
                     56:   char *buf;
                     57:   int len;
                     58: {
                     59:   char ourbuf[MAXPATHLEN];
                     60:   char *result;
                     61: 
                     62:   result = getwd (ourbuf);
                     63:   if (result) {
                     64:     if (strlen (ourbuf) >= len) {
                     65:       errno = ERANGE;
                     66:       return 0;
                     67:     }
                     68:     strcpy (buf, ourbuf);
                     69:   }
                     70:   return buf;
                     71: }

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