1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
/* libdiskfs implementetation of fs.defs: file_chown
Copyright (C) 1992, 1993, 1994, 1996 Free Software Foundation
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. */
#include "priv.h"
#include "fs_S.h"
/* Implement file_chown as described in <hurd/fs.defs>. */
kern_return_t
diskfs_S_file_chown (struct protid *cred,
uid_t uid,
gid_t gid)
{
CHANGE_NODE_FIELD (cred,
({
err = diskfs_isowner (np, cred);
if (err
|| ((!diskfs_isuid (uid, cred)
|| !diskfs_groupmember (gid, cred))
&& !diskfs_isuid (0, cred)))
err = EPERM;
else
{
err = diskfs_validate_owner_change (np, uid);
if (!err)
err = diskfs_validate_group_change (np, gid);
if (!err)
{
np->dn_stat.st_uid = uid;
np->dn_stat.st_gid = gid;
np->dn_set_ctime = 1;
}
}
}));
}
|
