]>
Commit | Line | Data |
---|---|---|
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 | /* | |
428870ff | 22 | * Copyright 2010 Sun Microsystems, Inc. All rights reserved. |
34dc7c2f BB |
23 | * Use is subject to license terms. |
24 | */ | |
25 | ||
34dc7c2f BB |
26 | #include <sys/zfs_context.h> |
27 | #include <sys/vfs.h> | |
28 | #include <sys/fs/zfs.h> | |
29 | #include <sys/zfs_znode.h> | |
428870ff | 30 | #include <sys/zfs_sa.h> |
34dc7c2f BB |
31 | #include <sys/zfs_acl.h> |
32 | ||
33 | void | |
34 | zfs_oldace_byteswap(ace_t *ace, int ace_cnt) | |
35 | { | |
36 | int i; | |
37 | ||
38 | for (i = 0; i != ace_cnt; i++, ace++) { | |
39 | ace->a_who = BSWAP_32(ace->a_who); | |
40 | ace->a_access_mask = BSWAP_32(ace->a_access_mask); | |
41 | ace->a_flags = BSWAP_16(ace->a_flags); | |
42 | ace->a_type = BSWAP_16(ace->a_type); | |
43 | } | |
44 | } | |
45 | ||
46 | /* | |
47 | * swap ace_t and ace_oject_t | |
48 | */ | |
49 | void | |
50 | zfs_ace_byteswap(void *buf, size_t size, boolean_t zfs_layout) | |
51 | { | |
52 | caddr_t end; | |
53 | caddr_t ptr; | |
d4ed6673 | 54 | zfs_ace_t *zacep = NULL; |
34dc7c2f BB |
55 | ace_t *acep; |
56 | uint16_t entry_type; | |
57 | size_t entry_size; | |
58 | int ace_type; | |
59 | ||
60 | end = (caddr_t)buf + size; | |
61 | ptr = buf; | |
62 | ||
63 | while (ptr < end) { | |
64 | if (zfs_layout) { | |
fb5f0bc8 BB |
65 | /* |
66 | * Avoid overrun. Embedded aces can have one | |
67 | * of several sizes. We don't know exactly | |
68 | * how many our present, only the size of the | |
69 | * buffer containing them. That size may be | |
70 | * larger than needed to hold the aces | |
71 | * present. As long as we do not do any | |
72 | * swapping beyond the end of our block we are | |
73 | * okay. It it safe to swap any non-ace data | |
74 | * within the block since it is just zeros. | |
75 | */ | |
76 | if (ptr + sizeof (zfs_ace_hdr_t) > end) { | |
77 | break; | |
78 | } | |
34dc7c2f BB |
79 | zacep = (zfs_ace_t *)ptr; |
80 | zacep->z_hdr.z_access_mask = | |
81 | BSWAP_32(zacep->z_hdr.z_access_mask); | |
82 | zacep->z_hdr.z_flags = BSWAP_16(zacep->z_hdr.z_flags); | |
83 | ace_type = zacep->z_hdr.z_type = | |
84 | BSWAP_16(zacep->z_hdr.z_type); | |
85 | entry_type = zacep->z_hdr.z_flags & ACE_TYPE_FLAGS; | |
86 | } else { | |
fb5f0bc8 BB |
87 | /* Overrun avoidance */ |
88 | if (ptr + sizeof (ace_t) > end) { | |
89 | break; | |
90 | } | |
34dc7c2f BB |
91 | acep = (ace_t *)ptr; |
92 | acep->a_access_mask = BSWAP_32(acep->a_access_mask); | |
93 | acep->a_flags = BSWAP_16(acep->a_flags); | |
94 | ace_type = acep->a_type = BSWAP_16(acep->a_type); | |
95 | acep->a_who = BSWAP_32(acep->a_who); | |
96 | entry_type = acep->a_flags & ACE_TYPE_FLAGS; | |
97 | } | |
98 | switch (entry_type) { | |
99 | case ACE_OWNER: | |
100 | case ACE_EVERYONE: | |
101 | case (ACE_IDENTIFIER_GROUP | ACE_GROUP): | |
102 | entry_size = zfs_layout ? | |
103 | sizeof (zfs_ace_hdr_t) : sizeof (ace_t); | |
104 | break; | |
105 | case ACE_IDENTIFIER_GROUP: | |
106 | default: | |
fb5f0bc8 | 107 | /* Overrun avoidance */ |
34dc7c2f | 108 | if (zfs_layout) { |
fb5f0bc8 BB |
109 | if (ptr + sizeof (zfs_ace_t) <= end) { |
110 | zacep->z_fuid = BSWAP_64(zacep->z_fuid); | |
111 | } else { | |
112 | entry_size = sizeof (zfs_ace_t); | |
113 | break; | |
114 | } | |
34dc7c2f BB |
115 | } |
116 | switch (ace_type) { | |
117 | case ACE_ACCESS_ALLOWED_OBJECT_ACE_TYPE: | |
118 | case ACE_ACCESS_DENIED_OBJECT_ACE_TYPE: | |
119 | case ACE_SYSTEM_AUDIT_OBJECT_ACE_TYPE: | |
120 | case ACE_SYSTEM_ALARM_OBJECT_ACE_TYPE: | |
121 | entry_size = zfs_layout ? | |
122 | sizeof (zfs_object_ace_t) : | |
123 | sizeof (ace_object_t); | |
124 | break; | |
125 | default: | |
126 | entry_size = zfs_layout ? sizeof (zfs_ace_t) : | |
127 | sizeof (ace_t); | |
128 | break; | |
129 | } | |
130 | } | |
131 | ptr = ptr + entry_size; | |
132 | } | |
133 | } | |
134 | ||
135 | /* ARGSUSED */ | |
136 | void | |
137 | zfs_oldacl_byteswap(void *buf, size_t size) | |
138 | { | |
139 | int cnt; | |
140 | ||
141 | /* | |
142 | * Arggh, since we don't know how many ACEs are in | |
143 | * the array, we have to swap the entire block | |
144 | */ | |
145 | ||
146 | cnt = size / sizeof (ace_t); | |
147 | ||
148 | zfs_oldace_byteswap((ace_t *)buf, cnt); | |
149 | } | |
150 | ||
151 | /* ARGSUSED */ | |
152 | void | |
153 | zfs_acl_byteswap(void *buf, size_t size) | |
154 | { | |
155 | zfs_ace_byteswap(buf, size, B_TRUE); | |
156 | } | |
157 | ||
158 | void | |
159 | zfs_znode_byteswap(void *buf, size_t size) | |
160 | { | |
161 | znode_phys_t *zp = buf; | |
162 | ||
163 | ASSERT(size >= sizeof (znode_phys_t)); | |
164 | ||
165 | zp->zp_crtime[0] = BSWAP_64(zp->zp_crtime[0]); | |
166 | zp->zp_crtime[1] = BSWAP_64(zp->zp_crtime[1]); | |
167 | zp->zp_atime[0] = BSWAP_64(zp->zp_atime[0]); | |
168 | zp->zp_atime[1] = BSWAP_64(zp->zp_atime[1]); | |
169 | zp->zp_mtime[0] = BSWAP_64(zp->zp_mtime[0]); | |
170 | zp->zp_mtime[1] = BSWAP_64(zp->zp_mtime[1]); | |
171 | zp->zp_ctime[0] = BSWAP_64(zp->zp_ctime[0]); | |
172 | zp->zp_ctime[1] = BSWAP_64(zp->zp_ctime[1]); | |
173 | zp->zp_gen = BSWAP_64(zp->zp_gen); | |
174 | zp->zp_mode = BSWAP_64(zp->zp_mode); | |
175 | zp->zp_size = BSWAP_64(zp->zp_size); | |
176 | zp->zp_parent = BSWAP_64(zp->zp_parent); | |
177 | zp->zp_links = BSWAP_64(zp->zp_links); | |
178 | zp->zp_xattr = BSWAP_64(zp->zp_xattr); | |
179 | zp->zp_rdev = BSWAP_64(zp->zp_rdev); | |
180 | zp->zp_flags = BSWAP_64(zp->zp_flags); | |
181 | zp->zp_uid = BSWAP_64(zp->zp_uid); | |
182 | zp->zp_gid = BSWAP_64(zp->zp_gid); | |
183 | zp->zp_zap = BSWAP_64(zp->zp_zap); | |
184 | zp->zp_pad[0] = BSWAP_64(zp->zp_pad[0]); | |
185 | zp->zp_pad[1] = BSWAP_64(zp->zp_pad[1]); | |
186 | zp->zp_pad[2] = BSWAP_64(zp->zp_pad[2]); | |
187 | ||
188 | zp->zp_acl.z_acl_extern_obj = BSWAP_64(zp->zp_acl.z_acl_extern_obj); | |
189 | zp->zp_acl.z_acl_size = BSWAP_32(zp->zp_acl.z_acl_size); | |
190 | zp->zp_acl.z_acl_version = BSWAP_16(zp->zp_acl.z_acl_version); | |
191 | zp->zp_acl.z_acl_count = BSWAP_16(zp->zp_acl.z_acl_count); | |
192 | if (zp->zp_acl.z_acl_version == ZFS_ACL_VERSION) { | |
193 | zfs_acl_byteswap((void *)&zp->zp_acl.z_ace_data[0], | |
194 | ZFS_ACE_SPACE); | |
fb5f0bc8 | 195 | } else { |
34dc7c2f BB |
196 | zfs_oldace_byteswap((ace_t *)&zp->zp_acl.z_ace_data[0], |
197 | ACE_SLOT_CNT); | |
fb5f0bc8 | 198 | } |
34dc7c2f | 199 | } |
c28b2279 BB |
200 | |
201 | #if defined(_KERNEL) && defined(HAVE_SPL) | |
202 | EXPORT_SYMBOL(zfs_oldacl_byteswap); | |
203 | EXPORT_SYMBOL(zfs_acl_byteswap); | |
204 | EXPORT_SYMBOL(zfs_znode_byteswap); | |
205 | #endif |