106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/*
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* This file is part of ixemul.library for the Amiga.
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* Copyright (C) 1991, 1992 Markus M. Wild
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* symlink.c,v 1.1.1.1 1994/04/04 04:30:36 amiga Exp
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*
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* symlink.c,v
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* Revision 1.1.1.1 1994/04/04 04:30:36 amiga
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* Initial CVS check in.
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*
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* Revision 1.2 1992/07/04 19:21:58 mwild
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* cut a possibly leading `./' in symlink contents. This is a kludge, but it's
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* the only way to get `configure' working without changes.
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*
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* Revision 1.1 1992/05/14 19:55:40 mwild
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* Initial revision
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*
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*/
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#define _KERNEL
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#include "ixemul.h"
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#include <string.h>
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#ifndef LINK_SOFT
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#define LINK_SOFT 1
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#endif
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static void u2a(const char *orig, char *new)
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{
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if (index(orig, ':'))
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{
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strcpy(new, orig);
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return;
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}
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if (*orig == '/')
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{
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while (*orig == '/')
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orig++;
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while (*orig && *orig != '/')
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*new++ = *orig++;
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*new++ = ':';
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if (*orig)
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orig++;
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}
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while (*orig)
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{
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if (!memcmp(orig, "../", 3))
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{
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orig += 3;
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*new++ = '/';
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}
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else if (!memcmp(orig, "./", 2))
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orig += 2;
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else if (*orig == '/')
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orig++;
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else if (!strcmp(orig, ".."))
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{
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orig += 2;
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*new++ = '/';
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}
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else if (!strcmp(orig, "."))
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orig++;
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else
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{
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while (*orig && *orig != '/')
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*new++ = *orig++;
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if (*orig == '/')
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*new++ = *orig++;
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}
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}
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*new = '\0';
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}
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int symlink (const char *old, const char *new)
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{
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char *lstr;
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usetup;
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// Sanity check: AFS has problems with symlink("", ""), it creates
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// a 'directory' that can't be deleted.
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//
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// You can also test this with: 'MakeLink("", "", 1);'
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if (!old || !new || !strlen(old) || !strlen(new))
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errno_return(ENOENT, -1);
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/* is long-alignment needed here? This is DOS, isn't it... */
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lstr = alloca (strlen (old) + 4);
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lstr = LONG_ALIGN (lstr);
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u2a(old, lstr);
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return __make_link ((char *)new, (BPTR)lstr, LINK_SOFT);
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}
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