1/*-
2 * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
3 * All rights reserved.
4 *
5 * This software was developed by Robert Watson for the TrustedBSD Project.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28/*
29 * acl_set_file -- set a file/directory ACL by name
30 */
31
32#include <sys/cdefs.h>
33__FBSDID("$FreeBSD$");
34
35#include <sys/types.h>
36#include "namespace.h"
37#include <sys/acl.h>
38#include "un-namespace.h"
39
40#include <errno.h>
41#include <stdlib.h>
42#include <string.h>
43#include <unistd.h>
44
45#include "acl_support.h"
46
47/*
48 * For POSIX.1e-semantic ACLs, do a presort so the kernel doesn't have to
49 * (the POSIX.1e semantic code will reject unsorted ACL submission).  If it's
50 * not a semantic that the library knows about, just submit it flat and
51 * assume the caller knows what they're up to.
52 */
53int
54acl_set_file(const char *path_p, acl_type_t type, acl_t acl)
55{
56
57	if (acl == NULL || path_p == NULL) {
58		errno = EINVAL;
59		return (-1);
60	}
61	type = _acl_type_unold(type);
62	if (_acl_type_not_valid_for_acl(acl, type)) {
63		errno = EINVAL;
64		return (-1);
65	}
66	if (_posix1e_acl(acl, type))
67		_posix1e_acl_sort(acl);
68
69	acl->ats_cur_entry = 0;
70
71	return (__acl_set_file(path_p, type, &acl->ats_acl));
72}
73
74int
75acl_set_link_np(const char *path_p, acl_type_t type, acl_t acl)
76{
77
78	if (acl == NULL || path_p == NULL) {
79		errno = EINVAL;
80		return (-1);
81	}
82	type = _acl_type_unold(type);
83	if (_acl_type_not_valid_for_acl(acl, type)) {
84		errno = EINVAL;
85		return (-1);
86	}
87	if (_posix1e_acl(acl, type))
88		_posix1e_acl_sort(acl);
89
90	acl->ats_cur_entry = 0;
91
92	return (__acl_set_link(path_p, type, &acl->ats_acl));
93}
94
95int
96acl_set_fd(int fd, acl_t acl)
97{
98
99	if (fpathconf(fd, _PC_ACL_NFS4) == 1)
100		return (acl_set_fd_np(fd, acl, ACL_TYPE_NFS4));
101
102	return (acl_set_fd_np(fd, acl, ACL_TYPE_ACCESS));
103}
104
105int
106acl_set_fd_np(int fd, acl_t acl, acl_type_t type)
107{
108
109	if (acl == NULL) {
110		errno = EINVAL;
111		return (-1);
112	}
113	type = _acl_type_unold(type);
114	if (_acl_type_not_valid_for_acl(acl, type)) {
115		errno = EINVAL;
116		return (-1);
117	}
118	if (_posix1e_acl(acl, type))
119		_posix1e_acl_sort(acl);
120
121	acl->ats_cur_entry = 0;
122
123	return (___acl_set_fd(fd, type, &acl->ats_acl));
124}
125
126/*
127 * acl_set_permset() (23.4.23): sets the permissions of ACL entry entry_d
128 * with the permissions in permset_d
129 */
130int
131acl_set_permset(acl_entry_t entry_d, acl_permset_t permset_d)
132{
133
134	if (!entry_d) {
135		errno = EINVAL;
136		return (-1);
137	}
138
139	if ((*permset_d & ACL_POSIX1E_BITS) != *permset_d) {
140		if ((*permset_d & ACL_NFS4_PERM_BITS) != *permset_d) {
141			errno = EINVAL;
142			return (-1);
143		}
144		if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) {
145			errno = EINVAL;
146			return (-1);
147		}
148		_entry_brand_as(entry_d, ACL_BRAND_NFS4);
149	}
150
151	entry_d->ae_perm = *permset_d;
152
153	return (0);
154}
155
156/*
157 * acl_set_qualifier() sets the qualifier (ae_id) of the tag for
158 * ACL entry entry_d to the value referred to by tag_qualifier_p
159 */
160int
161acl_set_qualifier(acl_entry_t entry_d, const void *tag_qualifier_p)
162{
163
164	if (!entry_d || !tag_qualifier_p) {
165		errno = EINVAL;
166		return (-1);
167	}
168	switch(entry_d->ae_tag) {
169	case ACL_USER:
170	case ACL_GROUP:
171		entry_d->ae_id = *(uid_t *)tag_qualifier_p;
172		break;
173	default:
174		errno = EINVAL;
175		return (-1);
176	}
177
178	return (0);
179}
180
181/*
182 * acl_set_tag_type() sets the tag type for ACL entry entry_d to the
183 * value of tag_type
184 */
185int
186acl_set_tag_type(acl_entry_t entry_d, acl_tag_t tag_type)
187{
188
189	if (entry_d == NULL) {
190		errno = EINVAL;
191		return (-1);
192	}
193
194	switch(tag_type) {
195	case ACL_OTHER:
196	case ACL_MASK:
197		if (!_entry_brand_may_be(entry_d, ACL_BRAND_POSIX)) {
198			errno = EINVAL;
199			return (-1);
200		}
201		_entry_brand_as(entry_d, ACL_BRAND_POSIX);
202		break;
203	case ACL_EVERYONE:
204		if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) {
205			errno = EINVAL;
206			return (-1);
207		}
208		_entry_brand_as(entry_d, ACL_BRAND_NFS4);
209		break;
210	}
211
212	switch(tag_type) {
213	case ACL_USER_OBJ:
214	case ACL_USER:
215	case ACL_GROUP_OBJ:
216	case ACL_GROUP:
217	case ACL_MASK:
218	case ACL_OTHER:
219	case ACL_EVERYONE:
220		entry_d->ae_tag = tag_type;
221		return (0);
222	}
223
224	errno = EINVAL;
225	return (-1);
226}
227
228int
229acl_set_entry_type_np(acl_entry_t entry_d, acl_entry_type_t entry_type)
230{
231
232	if (entry_d == NULL) {
233		errno = EINVAL;
234		return (-1);
235	}
236	if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) {
237		errno = EINVAL;
238		return (-1);
239	}
240	_entry_brand_as(entry_d, ACL_BRAND_NFS4);
241
242	switch (entry_type) {
243	case ACL_ENTRY_TYPE_ALLOW:
244	case ACL_ENTRY_TYPE_DENY:
245	case ACL_ENTRY_TYPE_AUDIT:
246	case ACL_ENTRY_TYPE_ALARM:
247		entry_d->ae_entry_type = entry_type;
248		return (0);
249	}
250
251	errno = EINVAL;
252	return (-1);
253}
254