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sourceware.org Git - glibc.git/blob - sysdeps/mach/hurd/link.c
1 /* Copyright (C) 1991-2015 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library 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 GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
23 /* Make a link to FROM called TO. */
25 __link (const char *from
, const char *to
)
28 file_t oldfile
, linknode
, todir
;
31 oldfile
= __file_name_lookup (from
, 0, 0);
32 if (oldfile
== MACH_PORT_NULL
)
35 /* The file_getlinknode RPC returns the port that should be passed to
36 the receiving filesystem (the one containing TODIR) in dir_link. */
38 err
= __file_getlinknode (oldfile
, &linknode
);
39 __mach_port_deallocate (__mach_task_self (), oldfile
);
41 return __hurd_fail (err
);
43 todir
= __file_name_split (to
, &toname
);
44 if (todir
!= MACH_PORT_NULL
)
46 err
= __dir_link (todir
, linknode
, toname
, 1);
47 __mach_port_deallocate (__mach_task_self (), todir
);
49 __mach_port_deallocate (__mach_task_self (), linknode
);
50 if (todir
== MACH_PORT_NULL
)
54 return __hurd_fail (err
);
58 weak_alias (__link
, link
)
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