1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright 2010 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2013 by Delphix. All rights reserved.
*/
#include <sys/zfs_context.h>
#if defined(_KERNEL)
#include <sys/systm.h>
#include <sys/sunddi.h>
#include <sys/ctype.h>
#else
#include <stdio.h>
#include <unistd.h>
#include <strings.h>
#include <libnvpair.h>
#include <ctype.h>
#endif
#include <sys/dsl_deleg.h>
#include "zfs_prop.h"
#include "zfs_deleg.h"
#include "zfs_namecheck.h"
zfs_deleg_perm_tab_t zfs_deleg_perm_tab[] = {
{ZFS_DELEG_PERM_ALLOW},
{ZFS_DELEG_PERM_BOOKMARK},
{ZFS_DELEG_PERM_CLONE},
{ZFS_DELEG_PERM_CREATE},
{ZFS_DELEG_PERM_DESTROY},
{ZFS_DELEG_PERM_DIFF},
{ZFS_DELEG_PERM_MOUNT},
{ZFS_DELEG_PERM_PROMOTE},
{ZFS_DELEG_PERM_RECEIVE},
{ZFS_DELEG_PERM_RENAME},
{ZFS_DELEG_PERM_ROLLBACK},
{ZFS_DELEG_PERM_SNAPSHOT},
{ZFS_DELEG_PERM_SHARE},
{ZFS_DELEG_PERM_SEND},
{ZFS_DELEG_PERM_USERPROP},
{ZFS_DELEG_PERM_USERQUOTA},
{ZFS_DELEG_PERM_GROUPQUOTA},
{ZFS_DELEG_PERM_USERUSED},
{ZFS_DELEG_PERM_GROUPUSED},
{ZFS_DELEG_PERM_HOLD},
{ZFS_DELEG_PERM_RELEASE},
{NULL}
};
static int
zfs_valid_permission_name(const char *perm)
{
if (zfs_deleg_canonicalize_perm(perm))
return (0);
return (permset_namecheck(perm, NULL, NULL));
}
const char *
zfs_deleg_canonicalize_perm(const char *perm)
{
int i;
zfs_prop_t prop;
for (i = 0; zfs_deleg_perm_tab[i].z_perm != NULL; i++) {
if (strcmp(perm, zfs_deleg_perm_tab[i].z_perm) == 0)
return (perm);
}
prop = zfs_name_to_prop(perm);
if (prop != ZPROP_INVAL && zfs_prop_delegatable(prop))
return (zfs_prop_to_name(prop));
return (NULL);
}
static int
zfs_validate_who(char *who)
{
char *p;
if (who[2] != ZFS_DELEG_FIELD_SEP_CHR)
return (-1);
switch (who[0]) {
case ZFS_DELEG_USER:
case ZFS_DELEG_GROUP:
case ZFS_DELEG_USER_SETS:
case ZFS_DELEG_GROUP_SETS:
if (who[1] != ZFS_DELEG_LOCAL && who[1] != ZFS_DELEG_DESCENDENT)
return (-1);
for (p = &who[3]; *p; p++)
if (!isdigit(*p))
return (-1);
break;
case ZFS_DELEG_NAMED_SET:
case ZFS_DELEG_NAMED_SET_SETS:
if (who[1] != ZFS_DELEG_NA)
return (-1);
return (permset_namecheck(&who[3], NULL, NULL));
case ZFS_DELEG_CREATE:
case ZFS_DELEG_CREATE_SETS:
if (who[1] != ZFS_DELEG_NA)
return (-1);
if (who[3] != '\0')
return (-1);
break;
case ZFS_DELEG_EVERYONE:
case ZFS_DELEG_EVERYONE_SETS:
if (who[1] != ZFS_DELEG_LOCAL && who[1] != ZFS_DELEG_DESCENDENT)
return (-1);
if (who[3] != '\0')
return (-1);
break;
default:
return (-1);
}
return (0);
}
int
zfs_deleg_verify_nvlist(nvlist_t *nvp)
{
nvpair_t *who, *perm_name;
nvlist_t *perms;
int error;
if (nvp == NULL)
return (-1);
who = nvlist_next_nvpair(nvp, NULL);
if (who == NULL)
return (-1);
do {
if (zfs_validate_who(nvpair_name(who)))
return (-1);
error = nvlist_lookup_nvlist(nvp, nvpair_name(who), &perms);
if (error && error != ENOENT)
return (-1);
if (error == ENOENT)
continue;
perm_name = nvlist_next_nvpair(perms, NULL);
if (perm_name == NULL) {
return (-1);
}
do {
error = zfs_valid_permission_name(
nvpair_name(perm_name));
if (error)
return (-1);
} while ((perm_name = nvlist_next_nvpair(perms, perm_name)));
} while ((who = nvlist_next_nvpair(nvp, who)));
return (0);
}
/*
* Construct the base attribute name. The base attribute names
* are the "key" to locate the jump objects which contain the actual
* permissions. The base attribute names are encoded based on
* type of entry and whether it is a local or descendent permission.
*
* Arguments:
* attr - attribute name return string, attribute is assumed to be
* ZFS_MAX_DELEG_NAME long.
* type - type of entry to construct
* inheritchr - inheritance type (local,descendent, or NA for create and
* permission set definitions
* data - is either a permission set name or a 64 bit uid/gid.
*/
void
zfs_deleg_whokey(char *attr, zfs_deleg_who_type_t type,
char inheritchr, void *data)
{
int len = ZFS_MAX_DELEG_NAME;
uint64_t *id = data;
switch (type) {
case ZFS_DELEG_USER:
case ZFS_DELEG_GROUP:
case ZFS_DELEG_USER_SETS:
case ZFS_DELEG_GROUP_SETS:
(void) snprintf(attr, len, "%c%c%c%lld", type, inheritchr,
ZFS_DELEG_FIELD_SEP_CHR, (longlong_t)*id);
break;
case ZFS_DELEG_NAMED_SET_SETS:
case ZFS_DELEG_NAMED_SET:
(void) snprintf(attr, len, "%c-%c%s", type,
ZFS_DELEG_FIELD_SEP_CHR, (char *)data);
break;
case ZFS_DELEG_CREATE:
case ZFS_DELEG_CREATE_SETS:
(void) snprintf(attr, len, "%c-%c", type,
ZFS_DELEG_FIELD_SEP_CHR);
break;
case ZFS_DELEG_EVERYONE:
case ZFS_DELEG_EVERYONE_SETS:
(void) snprintf(attr, len, "%c%c%c", type, inheritchr,
ZFS_DELEG_FIELD_SEP_CHR);
break;
default:
ASSERT(!"bad zfs_deleg_who_type_t");
}
}
#if defined(_KERNEL) && defined(HAVE_SPL)
EXPORT_SYMBOL(zfs_deleg_verify_nvlist);
EXPORT_SYMBOL(zfs_deleg_whokey);
EXPORT_SYMBOL(zfs_deleg_canonicalize_perm);
#endif
|
