| /* `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; |
| } |