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34dc7c2f BB |
1 | /* |
2 | * CDDL HEADER START | |
3 | * | |
4 | * The contents of this file are subject to the terms of the | |
5 | * Common Development and Distribution License (the "License"). | |
6 | * You may not use this file except in compliance with the License. | |
7 | * | |
8 | * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
9 | * or http://www.opensolaris.org/os/licensing. | |
10 | * See the License for the specific language governing permissions | |
11 | * and limitations under the License. | |
12 | * | |
13 | * When distributing Covered Code, include this CDDL HEADER in each | |
14 | * file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
15 | * If applicable, add the following below this CDDL HEADER, with the | |
16 | * fields enclosed by brackets "[]" replaced with your own identifying | |
17 | * information: Portions Copyright [yyyy] [name of copyright owner] | |
18 | * | |
19 | * CDDL HEADER END | |
20 | */ | |
21 | /* | |
572e2857 | 22 | * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. |
34dc7c2f BB |
23 | */ |
24 | ||
34dc7c2f BB |
25 | #if defined(_KERNEL) |
26 | #include <sys/systm.h> | |
27 | #include <sys/sunddi.h> | |
28 | #include <sys/ctype.h> | |
29 | #else | |
30 | #include <stdio.h> | |
31 | #include <unistd.h> | |
32 | #include <strings.h> | |
33 | #include <libnvpair.h> | |
34 | #include <ctype.h> | |
35 | #endif | |
36 | /* XXX includes zfs_context.h, so why bother with the above? */ | |
37 | #include <sys/dsl_deleg.h> | |
38 | #include "zfs_prop.h" | |
39 | #include "zfs_deleg.h" | |
40 | #include "zfs_namecheck.h" | |
41 | ||
42 | /* | |
43 | * permission table | |
44 | * | |
45 | * Keep this table in sorted order | |
46 | * | |
47 | * This table is used for displaying all permissions for | |
48 | * zfs allow | |
49 | */ | |
50 | ||
51 | zfs_deleg_perm_tab_t zfs_deleg_perm_tab[] = { | |
52 | {ZFS_DELEG_PERM_ALLOW, ZFS_DELEG_NOTE_ALLOW}, | |
53 | {ZFS_DELEG_PERM_CLONE, ZFS_DELEG_NOTE_CLONE }, | |
54 | {ZFS_DELEG_PERM_CREATE, ZFS_DELEG_NOTE_CREATE }, | |
55 | {ZFS_DELEG_PERM_DESTROY, ZFS_DELEG_NOTE_DESTROY }, | |
56 | {ZFS_DELEG_PERM_MOUNT, ZFS_DELEG_NOTE_MOUNT }, | |
57 | {ZFS_DELEG_PERM_PROMOTE, ZFS_DELEG_NOTE_PROMOTE }, | |
58 | {ZFS_DELEG_PERM_RECEIVE, ZFS_DELEG_NOTE_RECEIVE }, | |
59 | {ZFS_DELEG_PERM_RENAME, ZFS_DELEG_NOTE_RENAME }, | |
60 | {ZFS_DELEG_PERM_ROLLBACK, ZFS_DELEG_NOTE_ROLLBACK }, | |
61 | {ZFS_DELEG_PERM_SNAPSHOT, ZFS_DELEG_NOTE_SNAPSHOT }, | |
62 | {ZFS_DELEG_PERM_SHARE, ZFS_DELEG_NOTE_SHARE }, | |
63 | {ZFS_DELEG_PERM_SEND, ZFS_DELEG_NOTE_NONE }, | |
64 | {ZFS_DELEG_PERM_USERPROP, ZFS_DELEG_NOTE_USERPROP }, | |
9babb374 BB |
65 | {ZFS_DELEG_PERM_USERQUOTA, ZFS_DELEG_NOTE_USERQUOTA }, |
66 | {ZFS_DELEG_PERM_GROUPQUOTA, ZFS_DELEG_NOTE_GROUPQUOTA }, | |
67 | {ZFS_DELEG_PERM_USERUSED, ZFS_DELEG_NOTE_USERUSED }, | |
68 | {ZFS_DELEG_PERM_GROUPUSED, ZFS_DELEG_NOTE_GROUPUSED }, | |
45d1cae3 BB |
69 | {ZFS_DELEG_PERM_HOLD, ZFS_DELEG_NOTE_HOLD }, |
70 | {ZFS_DELEG_PERM_RELEASE, ZFS_DELEG_NOTE_RELEASE }, | |
572e2857 | 71 | {ZFS_DELEG_PERM_DIFF, ZFS_DELEG_NOTE_DIFF}, |
34dc7c2f BB |
72 | {NULL, ZFS_DELEG_NOTE_NONE } |
73 | }; | |
74 | ||
75 | static int | |
76 | zfs_valid_permission_name(const char *perm) | |
77 | { | |
78 | if (zfs_deleg_canonicalize_perm(perm)) | |
79 | return (0); | |
80 | ||
81 | return (permset_namecheck(perm, NULL, NULL)); | |
82 | } | |
83 | ||
84 | const char * | |
85 | zfs_deleg_canonicalize_perm(const char *perm) | |
86 | { | |
87 | int i; | |
88 | zfs_prop_t prop; | |
89 | ||
90 | for (i = 0; zfs_deleg_perm_tab[i].z_perm != NULL; i++) { | |
91 | if (strcmp(perm, zfs_deleg_perm_tab[i].z_perm) == 0) | |
92 | return (perm); | |
93 | } | |
94 | ||
95 | prop = zfs_name_to_prop(perm); | |
96 | if (prop != ZPROP_INVAL && zfs_prop_delegatable(prop)) | |
97 | return (zfs_prop_to_name(prop)); | |
98 | return (NULL); | |
99 | ||
100 | } | |
101 | ||
102 | static int | |
103 | zfs_validate_who(char *who) | |
104 | { | |
105 | char *p; | |
106 | ||
107 | if (who[2] != ZFS_DELEG_FIELD_SEP_CHR) | |
108 | return (-1); | |
109 | ||
110 | switch (who[0]) { | |
111 | case ZFS_DELEG_USER: | |
112 | case ZFS_DELEG_GROUP: | |
113 | case ZFS_DELEG_USER_SETS: | |
114 | case ZFS_DELEG_GROUP_SETS: | |
115 | if (who[1] != ZFS_DELEG_LOCAL && who[1] != ZFS_DELEG_DESCENDENT) | |
116 | return (-1); | |
117 | for (p = &who[3]; *p; p++) | |
118 | if (!isdigit(*p)) | |
119 | return (-1); | |
120 | break; | |
121 | ||
122 | case ZFS_DELEG_NAMED_SET: | |
123 | case ZFS_DELEG_NAMED_SET_SETS: | |
124 | if (who[1] != ZFS_DELEG_NA) | |
125 | return (-1); | |
126 | return (permset_namecheck(&who[3], NULL, NULL)); | |
127 | ||
128 | case ZFS_DELEG_CREATE: | |
129 | case ZFS_DELEG_CREATE_SETS: | |
130 | if (who[1] != ZFS_DELEG_NA) | |
131 | return (-1); | |
132 | if (who[3] != '\0') | |
133 | return (-1); | |
134 | break; | |
135 | ||
136 | case ZFS_DELEG_EVERYONE: | |
137 | case ZFS_DELEG_EVERYONE_SETS: | |
138 | if (who[1] != ZFS_DELEG_LOCAL && who[1] != ZFS_DELEG_DESCENDENT) | |
139 | return (-1); | |
140 | if (who[3] != '\0') | |
141 | return (-1); | |
142 | break; | |
143 | ||
144 | default: | |
145 | return (-1); | |
146 | } | |
147 | ||
148 | return (0); | |
149 | } | |
150 | ||
151 | int | |
152 | zfs_deleg_verify_nvlist(nvlist_t *nvp) | |
153 | { | |
154 | nvpair_t *who, *perm_name; | |
155 | nvlist_t *perms; | |
156 | int error; | |
157 | ||
158 | if (nvp == NULL) | |
159 | return (-1); | |
160 | ||
161 | who = nvlist_next_nvpair(nvp, NULL); | |
162 | if (who == NULL) | |
163 | return (-1); | |
164 | ||
165 | do { | |
166 | if (zfs_validate_who(nvpair_name(who))) | |
167 | return (-1); | |
168 | ||
169 | error = nvlist_lookup_nvlist(nvp, nvpair_name(who), &perms); | |
170 | ||
171 | if (error && error != ENOENT) | |
172 | return (-1); | |
173 | if (error == ENOENT) | |
174 | continue; | |
175 | ||
176 | perm_name = nvlist_next_nvpair(perms, NULL); | |
177 | if (perm_name == NULL) { | |
178 | return (-1); | |
179 | } | |
180 | do { | |
181 | error = zfs_valid_permission_name( | |
182 | nvpair_name(perm_name)); | |
183 | if (error) | |
184 | return (-1); | |
c65aa5b2 BB |
185 | } while ((perm_name = nvlist_next_nvpair(perms, perm_name))); |
186 | } while ((who = nvlist_next_nvpair(nvp, who))); | |
34dc7c2f BB |
187 | return (0); |
188 | } | |
189 | ||
190 | /* | |
191 | * Construct the base attribute name. The base attribute names | |
192 | * are the "key" to locate the jump objects which contain the actual | |
193 | * permissions. The base attribute names are encoded based on | |
194 | * type of entry and whether it is a local or descendent permission. | |
195 | * | |
196 | * Arguments: | |
197 | * attr - attribute name return string, attribute is assumed to be | |
198 | * ZFS_MAX_DELEG_NAME long. | |
199 | * type - type of entry to construct | |
200 | * inheritchr - inheritance type (local,descendent, or NA for create and | |
201 | * permission set definitions | |
202 | * data - is either a permission set name or a 64 bit uid/gid. | |
203 | */ | |
204 | void | |
205 | zfs_deleg_whokey(char *attr, zfs_deleg_who_type_t type, | |
206 | char inheritchr, void *data) | |
207 | { | |
208 | int len = ZFS_MAX_DELEG_NAME; | |
209 | uint64_t *id = data; | |
210 | ||
211 | switch (type) { | |
212 | case ZFS_DELEG_USER: | |
213 | case ZFS_DELEG_GROUP: | |
214 | case ZFS_DELEG_USER_SETS: | |
215 | case ZFS_DELEG_GROUP_SETS: | |
216 | (void) snprintf(attr, len, "%c%c%c%lld", type, inheritchr, | |
217 | ZFS_DELEG_FIELD_SEP_CHR, (longlong_t)*id); | |
218 | break; | |
219 | case ZFS_DELEG_NAMED_SET_SETS: | |
220 | case ZFS_DELEG_NAMED_SET: | |
221 | (void) snprintf(attr, len, "%c-%c%s", type, | |
222 | ZFS_DELEG_FIELD_SEP_CHR, (char *)data); | |
223 | break; | |
224 | case ZFS_DELEG_CREATE: | |
225 | case ZFS_DELEG_CREATE_SETS: | |
226 | (void) snprintf(attr, len, "%c-%c", type, | |
227 | ZFS_DELEG_FIELD_SEP_CHR); | |
228 | break; | |
229 | case ZFS_DELEG_EVERYONE: | |
230 | case ZFS_DELEG_EVERYONE_SETS: | |
231 | (void) snprintf(attr, len, "%c%c%c", type, inheritchr, | |
232 | ZFS_DELEG_FIELD_SEP_CHR); | |
233 | break; | |
234 | default: | |
235 | ASSERT(!"bad zfs_deleg_who_type_t"); | |
236 | } | |
237 | } | |
c28b2279 BB |
238 | |
239 | #if defined(_KERNEL) && defined(HAVE_SPL) | |
240 | EXPORT_SYMBOL(zfs_deleg_verify_nvlist); | |
241 | EXPORT_SYMBOL(zfs_deleg_whokey); | |
242 | EXPORT_SYMBOL(zfs_deleg_canonicalize_perm); | |
243 | #endif |