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bfff8b1b | 1 | /* Copyright (C) 1991-2017 Free Software Foundation, Inc. |
ebbad4cc | 2 | This file is part of the GNU C Library. |
28f540f4 | 3 | |
ebbad4cc | 4 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
28f540f4 | 8 | |
ebbad4cc UD |
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 | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
28f540f4 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
28f540f4 | 17 | |
28f540f4 RM |
18 | #include <errno.h> |
19 | #include <stddef.h> | |
20 | #include <unistd.h> | |
21 | #include <hurd.h> | |
22 | ||
23 | /* Make a link to FROM called TO. */ | |
24 | int | |
bd2260a2 | 25 | __link (const char *from, const char *to) |
28f540f4 RM |
26 | { |
27 | error_t err; | |
28 | file_t oldfile, linknode, todir; | |
29 | char *toname; | |
30 | ||
31 | oldfile = __file_name_lookup (from, 0, 0); | |
32 | if (oldfile == MACH_PORT_NULL) | |
33 | return -1; | |
34 | ||
35 | /* The file_getlinknode RPC returns the port that should be passed to | |
36 | the receiving filesystem (the one containing TODIR) in dir_link. */ | |
37 | ||
38 | err = __file_getlinknode (oldfile, &linknode); | |
39 | __mach_port_deallocate (__mach_task_self (), oldfile); | |
40 | if (err) | |
41 | return __hurd_fail (err); | |
42 | ||
43 | todir = __file_name_split (to, &toname); | |
44 | if (todir != MACH_PORT_NULL) | |
45 | { | |
0e3426bb | 46 | err = __dir_link (todir, linknode, toname, 1); |
28f540f4 RM |
47 | __mach_port_deallocate (__mach_task_self (), todir); |
48 | } | |
49 | __mach_port_deallocate (__mach_task_self (), linknode); | |
50 | if (todir == MACH_PORT_NULL) | |
51 | return -1; | |
52 | ||
53 | if (err) | |
54 | return __hurd_fail (err); | |
55 | return 0; | |
56 | } | |
57 | ||
58 | weak_alias (__link, link) |