1 /* Rename a file using relative source and destination names. Hurd version.
2 Copyright (C) 1991-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <stdio.h>
20 #include <hurd.h>
21 #include <hurd/fd.h>
22
23 /* Rename the file OLD relative to OLDFD to NEW relative to NEWFD. */
24 int
__renameat2(int oldfd,const char * old,int newfd,const char * new,unsigned int flags)25 __renameat2 (int oldfd, const char *old, int newfd, const char *new,
26 unsigned int flags)
27 {
28 error_t err;
29 file_t olddir, newdir;
30 const char *oldname, *newname;
31 int excl = 0;
32
33 if ((flags & (RENAME_EXCHANGE | RENAME_NOREPLACE)) == (RENAME_EXCHANGE | RENAME_NOREPLACE))
34 return __hurd_fail (EINVAL);
35 if (flags & (RENAME_EXCHANGE | RENAME_WHITEOUT))
36 return __hurd_fail (ENOSYS);
37 if (flags & RENAME_NOREPLACE)
38 excl = 1;
39
40 olddir = __directory_name_split_at (oldfd, old, (char **) &oldname);
41 if (olddir == MACH_PORT_NULL)
42 return -1;
43 newdir = __directory_name_split_at (newfd, new, (char **) &newname);
44 if (newdir == MACH_PORT_NULL)
45 {
46 __mach_port_deallocate (__mach_task_self (), olddir);
47 return -1;
48 }
49
50 err = __dir_rename (olddir, oldname, newdir, newname, excl);
51 __mach_port_deallocate (__mach_task_self (), olddir);
52 __mach_port_deallocate (__mach_task_self (), newdir);
53 if (err)
54 return __hurd_fail (err);
55 return 0;
56 }
57 libc_hidden_def (__renameat2)
58 weak_alias (__renameat2, renameat2)
59