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