2 * Copyright (c) 2001 Chris D. Faulhaber
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
30 #include <sys/types.h>
39 static int merge_user_group(acl_entry_t *entry, acl_entry_t *entry_new,
43 merge_user_group(acl_entry_t *entry, acl_entry_t *entry_new, int acl_brand)
45 acl_permset_t permset;
46 acl_entry_type_t entry_type;
47 acl_flagset_t flagset;
53 id = acl_get_qualifier(*entry);
55 err(1, "acl_get_qualifier() failed");
56 id_new = acl_get_qualifier(*entry_new);
58 err(1, "acl_get_qualifier() failed");
60 /* any other matches */
61 if (acl_get_permset(*entry, &permset) == -1)
62 err(1, "acl_get_permset() failed");
63 if (acl_set_permset(*entry_new, permset) == -1)
64 err(1, "acl_set_permset() failed");
66 if (acl_brand == ACL_BRAND_NFS4) {
67 if (acl_get_entry_type_np(*entry, &entry_type))
68 err(1, "acl_get_entry_type_np() failed");
69 if (acl_set_entry_type_np(*entry_new, entry_type))
70 err(1, "acl_set_entry_type_np() failed");
71 if (acl_get_flagset_np(*entry, &flagset))
72 err(1, "acl_get_flagset_np() failed");
73 if (acl_set_flagset_np(*entry_new, flagset))
74 err(1, "acl_set_flagset_np() failed");
86 * merge an ACL into existing file's ACL
89 merge_acl(acl_t acl, acl_t *prev_acl, const char *filename)
91 acl_entry_t entry, entry_new;
92 acl_permset_t permset;
94 acl_tag_t tag, tag_new;
95 acl_entry_type_t entry_type, entry_type_new;
96 acl_flagset_t flagset;
97 int entry_id, entry_id_new, have_entry, had_entry, entry_number = 0;
98 int acl_brand, prev_acl_brand;
100 acl_get_brand_np(acl, &acl_brand);
101 acl_get_brand_np(*prev_acl, &prev_acl_brand);
103 if (branding_mismatch(acl_brand, prev_acl_brand)) {
104 warnx("%s: branding mismatch; existing ACL is %s, "
105 "entry to be merged is %s", filename,
106 brand_name(prev_acl_brand), brand_name(acl_brand));
110 acl_new = acl_dup(*prev_acl);
112 err(1, "%s: acl_dup() failed", filename);
114 entry_id = ACL_FIRST_ENTRY;
116 while (acl_get_entry(acl, entry_id, &entry) == 1) {
117 entry_id = ACL_NEXT_ENTRY;
121 /* keep track of existing ACL_MASK entries */
122 if (acl_get_tag_type(entry, &tag) == -1)
123 err(1, "%s: acl_get_tag_type() failed - "
124 "invalid ACL entry", filename);
128 /* check against the existing ACL entries */
129 entry_id_new = ACL_FIRST_ENTRY;
130 while (acl_get_entry(acl_new, entry_id_new, &entry_new) == 1) {
131 entry_id_new = ACL_NEXT_ENTRY;
133 if (acl_get_tag_type(entry, &tag) == -1)
134 err(1, "%s: acl_get_tag_type() failed",
136 if (acl_get_tag_type(entry_new, &tag_new) == -1)
137 err(1, "%s: acl_get_tag_type() failed",
143 * For NFSv4, in addition to "tag" and "id" we also
144 * compare "entry_type".
146 if (acl_brand == ACL_BRAND_NFS4) {
147 if (acl_get_entry_type_np(entry, &entry_type))
148 err(1, "%s: acl_get_entry_type_np() "
150 if (acl_get_entry_type_np(entry_new, &entry_type_new))
151 err(1, "%s: acl_get_entry_type_np() "
153 if (entry_type != entry_type_new)
160 have_entry = merge_user_group(&entry,
161 &entry_new, acl_brand);
170 if (acl_get_permset(entry, &permset) == -1)
171 err(1, "%s: acl_get_permset() failed",
173 if (acl_set_permset(entry_new, permset) == -1)
174 err(1, "%s: acl_set_permset() failed",
177 if (acl_brand == ACL_BRAND_NFS4) {
178 if (acl_get_entry_type_np(entry, &entry_type))
179 err(1, "%s: acl_get_entry_type_np() failed",
181 if (acl_set_entry_type_np(entry_new, entry_type))
182 err(1, "%s: acl_set_entry_type_np() failed",
184 if (acl_get_flagset_np(entry, &flagset))
185 err(1, "%s: acl_get_flagset_np() failed",
187 if (acl_set_flagset_np(entry_new, flagset))
188 err(1, "%s: acl_set_flagset_np() failed",
191 had_entry = have_entry = 1;
194 /* should never be here */
195 errx(1, "%s: invalid tag type: %i", filename, tag);
200 /* if this entry has not been found, it must be new */
201 if (had_entry == 0) {
204 * NFSv4 ACL entries must be prepended to the ACL.
205 * Appending them at the end makes no sense, since
206 * in most cases they wouldn't even get evaluated.
208 if (acl_brand == ACL_BRAND_NFS4) {
209 if (acl_create_entry_np(&acl_new, &entry_new, entry_number) == -1) {
210 warn("%s: acl_create_entry_np() failed", filename);
215 * Without this increment, adding several
216 * entries at once, for example
217 * "setfacl -m user:1:r:allow,user:2:r:allow",
218 * would make them appear in reverse order.
222 if (acl_create_entry(&acl_new, &entry_new) == -1) {
223 warn("%s: acl_create_entry() failed", filename);
228 if (acl_copy_entry(entry_new, entry) == -1)
229 err(1, "%s: acl_copy_entry() failed", filename);
240 add_acl(acl_t acl, uint entry_number, acl_t *prev_acl, const char *filename)
242 acl_entry_t entry, entry_new;
244 int entry_id, acl_brand, prev_acl_brand;
246 acl_get_brand_np(acl, &acl_brand);
247 acl_get_brand_np(*prev_acl, &prev_acl_brand);
249 if (prev_acl_brand != ACL_BRAND_NFS4) {
250 warnx("%s: the '-a' option is only applicable to NFSv4 ACLs",
255 if (branding_mismatch(acl_brand, ACL_BRAND_NFS4)) {
256 warnx("%s: branding mismatch; existing ACL is NFSv4, "
257 "entry to be added is %s", filename,
258 brand_name(acl_brand));
262 acl_new = acl_dup(*prev_acl);
264 err(1, "%s: acl_dup() failed", filename);
266 entry_id = ACL_FIRST_ENTRY;
268 while (acl_get_entry(acl, entry_id, &entry) == 1) {
269 entry_id = ACL_NEXT_ENTRY;
271 if (acl_create_entry_np(&acl_new, &entry_new, entry_number) == -1) {
272 warn("%s: acl_create_entry_np() failed", filename);
278 * Without this increment, adding several
279 * entries at once, for example
280 * "setfacl -m user:1:r:allow,user:2:r:allow",
281 * would make them appear in reverse order.
285 if (acl_copy_entry(entry_new, entry) == -1)
286 err(1, "%s: acl_copy_entry() failed", filename);