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Annotation of embedaddon/libiconv/srclib/readlink.c, revision 1.1

1.1     ! misho       1: /* Stub for readlink().
        !             2:    Copyright (C) 2003-2007 Free Software Foundation, Inc.
        !             3: 
        !             4:    This program is free software: you can redistribute it and/or modify
        !             5:    it under the terms of the GNU General Public License as published by
        !             6:    the Free Software Foundation; either version 3 of the License, or
        !             7:    (at your option) any later version.
        !             8: 
        !             9:    This program is distributed in the hope that it will be useful,
        !            10:    but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            11:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            12:    GNU General Public License for more details.
        !            13: 
        !            14:    You should have received a copy of the GNU General Public License
        !            15:    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
        !            16: 
        !            17: #include <config.h>
        !            18: 
        !            19: /* Specification.  */
        !            20: #include <unistd.h>
        !            21: 
        !            22: #include <errno.h>
        !            23: #include <sys/types.h>
        !            24: #include <sys/stat.h>
        !            25: #include <stddef.h>
        !            26: 
        !            27: #if !HAVE_READLINK
        !            28: 
        !            29: /* readlink() substitute for systems that don't have a readlink() function,
        !            30:    such as DJGPP 2.03 and mingw32.  */
        !            31: 
        !            32: /* The official POSIX return type of readlink() is ssize_t, but since here
        !            33:    we have no declaration in a public header file, we use 'int' as return
        !            34:    type.  */
        !            35: 
        !            36: int
        !            37: readlink (const char *path, char *buf, size_t bufsize)
        !            38: {
        !            39:   struct stat statbuf;
        !            40: 
        !            41:   /* In general we should use lstat() here, not stat().  But on platforms
        !            42:      without symbolic links lstat() - if it exists - would be equivalent to
        !            43:      stat(), therefore we can use stat().  This saves us a configure check.  */
        !            44:   if (stat (path, &statbuf) >= 0)
        !            45:     errno = EINVAL;
        !            46:   return -1;
        !            47: }
        !            48: 
        !            49: #endif