acl_set.c revision 92986 
1/*-
2 * Copyright (c) 1999, 2000, 2001 Robert N. M. Watson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26/*
27 * acl_set_file -- set a file/directory ACL by name
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: head/lib/libc/posix1e/acl_set.c 92986 2002-03-22 21:53:29Z obrien $");
32
33#include <sys/types.h>
34#include "namespace.h"
35#include <sys/acl.h>
36#include "un-namespace.h"
37
38#include <errno.h>
39#include <stdlib.h>
40#include <string.h>
41
42#include "acl_support.h"
43
44/*
45 * For POSIX.1e-semantic ACLs, do a presort so the kernel doesn't have to
46 * (the POSIX.1e semantic code will reject unsorted ACL submission).  If it's
47 * not a semantic that the library knows about, just submit it flat and
48 * assume the caller knows what they're up to.
49 */
50int
51acl_set_file(const char *path_p, acl_type_t type, acl_t acl)
52{
53	int	error;
54
55	if (acl == NULL || path_p == NULL) {
56		errno = EINVAL;
57		return (-1);
58	}
59	if (_posix1e_acl(acl, type)) {
60		error = _posix1e_acl_sort(acl);
61		if (error) {
62			errno = error;
63			return (-1);
64		}
65	}
66
67	acl->ats_cur_entry = 0;
68
69	return (__acl_set_file(path_p, type, &acl->ats_acl));
70}
71
72int
73acl_set_fd(int fd, acl_t acl)
74{
75	int	error;
76
77	error = _posix1e_acl_sort(acl);
78	if (error) {
79		errno = error;
80		return(-1);
81	}
82
83	acl->ats_cur_entry = 0;
84
85	return (___acl_set_fd(fd, ACL_TYPE_ACCESS, &acl->ats_acl));
86}
87
88int
89acl_set_fd_np(int fd, acl_t acl, acl_type_t type)
90{
91	int	error;
92
93	if (_posix1e_acl(acl, type)) {
94		error = _posix1e_acl_sort(acl);
95		if (error) {
96			errno = error;
97			return (-1);
98		}
99	}
100
101	acl->ats_cur_entry = 0;
102
103	return (___acl_set_fd(fd, type, &acl->ats_acl));
104}
105
106/*
107 * acl_set_permset() (23.4.23): sets the permissions of ACL entry entry_d
108 * with the permissions in permset_d
109 */
110int
111acl_set_permset(acl_entry_t entry_d, acl_permset_t permset_d)
112{
113
114	if (!entry_d) {
115		errno = EINVAL;
116		return (-1);
117	}
118
119	entry_d->ae_perm = *permset_d;
120
121	return (0);
122}
123
124/*
125 * acl_set_qualifier() sets the qualifier (ae_id) of the tag for
126 * ACL entry entry_d to the value referred to by tag_qualifier_p
127 */
128int
129acl_set_qualifier(acl_entry_t entry_d, const void *tag_qualifier_p)
130{
131	if (!entry_d || !tag_qualifier_p) {
132		errno = EINVAL;
133		return (-1);
134	}
135
136	switch(entry_d->ae_tag) {
137	case ACL_USER:
138	case ACL_GROUP:
139		entry_d->ae_id = *(uid_t *)tag_qualifier_p;
140		break;
141	default:
142		errno = EINVAL;
143		return (-1);
144	}
145
146	return (0);
147}
148
149/*
150 * acl_set_tag_type() sets the tag type for ACL entry entry_d to the
151 * value of tag_type
152 */
153int
154acl_set_tag_type(acl_entry_t entry_d, acl_tag_t tag_type)
155{
156
157	if (entry_d == NULL) {
158		errno = EINVAL;
159		return (-1);
160	}
161
162	switch(tag_type) {
163	case ACL_USER_OBJ:
164	case ACL_USER:
165	case ACL_GROUP_OBJ:
166	case ACL_GROUP:
167	case ACL_MASK:
168	case ACL_OTHER:
169		entry_d->ae_tag = tag_type;
170		return (0);
171	}
172
173	errno = EINVAL;
174	return (-1);
175}
176