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/* `sln' program to create links between files.
Copyright (C) 1986, 1989, 1990, 1991, 1993 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Written by Mike Parker and David MacKenzie. */
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#if !defined(S_ISDIR) && defined(S_IFDIR)
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif
int
main (int argc, char **argv) {
struct stat stats;
if (argc != 3) return 1;
/* Destination must not be a directory. */
#if 0
if (stat (argv [2], &stats) == 0 && S_ISDIR (stats.st_mode))
{
return 1;
}
#endif
if (lstat (argv [2], &stats) == 0)
{
if (S_ISDIR (stats.st_mode))
{
return 1;
}
else if (unlink (argv [2]) && errno != ENOENT)
{
return 1;
}
}
else if (errno != ENOENT)
{
return 1;
}
#ifdef S_ISLNK
if (symlink (argv [1], argv [2]) == 0)
#else
if (link (argv [1], argv [2]) == 0)
#endif
{
return 0;
}
return 1;
}
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