1/*
2  File: __acl_to_xattr.c
3
4  Copyright (C) 1999, 2000
5  Andreas Gruenbacher, <a.gruenbacher@computer.org>
6
7  This program is free software; you can redistribute it and/or
8  modify it under the terms of the GNU Library General Public
9  License as published by the Free Software Foundation; either
10  version 2 of the License, or (at your option) any later version.
11
12  This program is distributed in the hope that it will be useful,
13  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  Library General Public License for more details.
16
17  You should have received a copy of the GNU Library General Public
18  License along with this library; if not, write to the Free Software
19  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20*/
21
22#include <errno.h>
23#include <sys/acl.h>
24#include "libacl.h"
25
26#include "byteorder.h"
27#include "acl_ea.h"
28
29
30char *
31__acl_to_xattr(const acl_obj *acl_obj_p, size_t *size)
32{
33	const acl_entry_obj *entry_obj_p;
34	acl_ea_header *ext_header_p;
35	acl_ea_entry *ext_ent_p;
36
37	*size = sizeof(acl_ea_header) + acl_obj_p->aused * sizeof(acl_ea_entry);
38	ext_header_p = (acl_ea_header *)malloc(*size);
39	if (!ext_header_p)
40		return NULL;
41
42	ext_header_p->a_version = cpu_to_le32(ACL_EA_VERSION);
43	ext_ent_p = (acl_ea_entry *)(ext_header_p+1);
44	FOREACH_ACL_ENTRY(entry_obj_p, acl_obj_p) {
45		ext_ent_p->e_tag   = cpu_to_le16(entry_obj_p->etag);
46		ext_ent_p->e_perm  = cpu_to_le16(entry_obj_p->eperm.sperm);
47
48		switch(entry_obj_p->etag) {
49			case ACL_USER:
50			case ACL_GROUP:
51				ext_ent_p->e_id =
52					cpu_to_le32(entry_obj_p->eid.qid);
53				break;
54
55			default:
56				ext_ent_p->e_id = ACL_UNDEFINED_ID;
57				break;
58		}
59		ext_ent_p++;
60	}
61	return (char *)ext_header_p;
62}
63
64