]>
Commit | Line | Data |
---|---|---|
3d9156a7 A |
1 | /* |
2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. | |
3 | * | |
4 | * @APPLE_LICENSE_HEADER_START@ | |
5 | * | |
6 | * This file contains Original Code and/or Modifications of Original Code | |
7 | * as defined in and that are subject to the Apple Public Source License | |
8 | * Version 2.0 (the 'License'). You may not use this file except in | |
9 | * compliance with the License. Please obtain a copy of the License at | |
10 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
11 | * file. | |
12 | * | |
13 | * The Original Code and all software distributed under the License are | |
14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
18 | * Please see the License for the specific language governing rights and | |
19 | * limitations under the License. | |
20 | * | |
21 | * @APPLE_LICENSE_HEADER_END@ | |
22 | */ | |
23 | ||
24 | #include <sys/types.h> | |
25 | #include <sys/acl.h> | |
26 | #include <stdlib.h> | |
27 | #include <fcntl.h> | |
28 | #include <strings.h> | |
29 | #include <errno.h> | |
30 | #include <uuid/uuid.h> | |
31 | ||
eb1cde05 A |
32 | /* |
33 | * Versions of copy_int/copy_ext that retain native endianity. | |
34 | */ | |
35 | extern ssize_t acl_copy_ext_native(void *buf_p, acl_t acl, ssize_t size); | |
36 | extern acl_t acl_copy_int_native(const void *buf_p); | |
3d9156a7 A |
37 | |
38 | struct _filesec { | |
39 | int fs_valid; | |
40 | #define FS_VALID_UID (1<<0) | |
41 | #define FS_VALID_GID (1<<1) | |
42 | #define FS_VALID_UUID (1<<2) | |
43 | #define FS_VALID_GRPUUID (1<<3) | |
44 | #define FS_VALID_MODE (1<<4) | |
45 | #define FS_VALID_ACL (1<<5) | |
46 | uid_t fs_uid; | |
47 | gid_t fs_gid; | |
48 | uuid_t fs_uuid; | |
49 | uuid_t fs_grpuuid; | |
50 | mode_t fs_mode; | |
51 | size_t fs_aclsize; | |
52 | void *fs_aclbuf; | |
53 | }; | |
54 | ||
55 | #define FS_ISVALID(_fsec, _bit) ((_fsec)->fs_valid & (_bit)) | |
56 | #define FS_CLEAR(_fsec, _bit) ((_fsec)->fs_valid &= ~(_bit)) | |
57 | #define FS_SET(_fsec, _bit) ((_fsec)->fs_valid |= (_bit)) | |
58 | ||
59 | static void filesec_discard_aclbuf(struct _filesec *fsec); | |
60 | ||
61 | filesec_t | |
62 | filesec_init(void) | |
63 | { | |
64 | struct _filesec *fsp; | |
65 | ||
66 | fsp = malloc(sizeof(*fsp)); | |
67 | if (fsp != NULL) | |
68 | fsp->fs_valid = 0; | |
69 | return(fsp); | |
70 | } | |
71 | ||
72 | filesec_t | |
73 | filesec_dup(filesec_t fsec) | |
74 | { | |
75 | struct _filesec *fsp; | |
76 | ||
77 | fsp = malloc(sizeof(*fsp)); | |
78 | if (fsp != NULL) { | |
79 | *fsp = *fsec; | |
80 | if (FS_ISVALID(fsec, FS_VALID_ACL)) { | |
81 | if (fsec->fs_aclbuf != _FILESEC_REMOVE_ACL) { | |
82 | fsp->fs_aclbuf = malloc(fsec->fs_aclsize); | |
83 | if (fsp->fs_aclbuf == NULL) { | |
84 | free(fsp); | |
85 | return(NULL); | |
86 | } | |
87 | bcopy(fsec->fs_aclbuf, fsp->fs_aclbuf, fsec->fs_aclsize); | |
88 | } | |
89 | } | |
90 | } | |
91 | return(fsp); | |
92 | } | |
93 | ||
94 | void | |
95 | filesec_free(filesec_t fsec) | |
96 | { | |
97 | filesec_discard_aclbuf(fsec); | |
98 | free(fsec); | |
99 | } | |
100 | ||
101 | int | |
102 | filesec_get_property(filesec_t fsec, filesec_property_t property, void *propptr) | |
103 | { | |
104 | int error; | |
105 | ||
106 | error = 0; | |
107 | switch(property) { | |
108 | case FILESEC_OWNER: | |
109 | if (!FS_ISVALID(fsec, FS_VALID_UID)) { | |
110 | error = ENOENT; | |
111 | break; | |
112 | } | |
113 | if (propptr != NULL) | |
114 | *(uid_t *)propptr = fsec->fs_uid; | |
115 | break; | |
116 | case FILESEC_GROUP: | |
117 | if (!FS_ISVALID(fsec, FS_VALID_GID)) { | |
118 | error = ENOENT; | |
119 | break; | |
120 | } | |
121 | if (propptr != NULL) | |
122 | *(gid_t *)propptr = fsec->fs_gid; | |
123 | break; | |
124 | case FILESEC_UUID: | |
125 | if (!FS_ISVALID(fsec, FS_VALID_UUID)) { | |
126 | error = ENOENT; | |
127 | break; | |
128 | } | |
129 | if (propptr != NULL) | |
130 | uuid_copy(*(uuid_t *)propptr, fsec->fs_uuid); | |
131 | break; | |
132 | case FILESEC_GRPUUID: | |
133 | if (!FS_ISVALID(fsec, FS_VALID_GRPUUID)) { | |
134 | error = ENOENT; | |
135 | break; | |
136 | } | |
137 | if (propptr != NULL) | |
138 | uuid_copy(*(uuid_t *)propptr, fsec->fs_grpuuid); | |
139 | break; | |
140 | case FILESEC_MODE: | |
141 | if (!FS_ISVALID(fsec, FS_VALID_MODE)) { | |
142 | error = ENOENT; | |
143 | break; | |
144 | } | |
145 | if (propptr != NULL) | |
146 | *(mode_t *)propptr = fsec->fs_mode; | |
147 | break; | |
148 | case FILESEC_ACL: | |
149 | if (!FS_ISVALID(fsec, FS_VALID_ACL)) { | |
150 | error = ENOENT; | |
151 | break; | |
152 | } | |
153 | if (propptr != NULL) { | |
154 | if (fsec->fs_aclbuf == _FILESEC_REMOVE_ACL) { | |
155 | *(acl_t *)propptr = _FILESEC_REMOVE_ACL; | |
156 | } else { | |
eb1cde05 | 157 | *(acl_t *)propptr = acl_copy_int_native(fsec->fs_aclbuf); |
3d9156a7 A |
158 | if (*(acl_t *)propptr == NULL) |
159 | error = errno; | |
160 | } | |
161 | } | |
162 | break; | |
163 | case FILESEC_ACL_RAW: | |
164 | if (!FS_ISVALID(fsec, FS_VALID_ACL)) { | |
165 | error = ENOENT; | |
166 | break; | |
167 | } | |
168 | if (propptr != NULL) | |
169 | *(void **)propptr = fsec->fs_aclbuf; | |
170 | break; | |
171 | case FILESEC_ACL_ALLOCSIZE: | |
172 | if (!FS_ISVALID(fsec, FS_VALID_ACL)) { | |
173 | error = ENOENT; | |
174 | break; | |
175 | } | |
176 | if (propptr != NULL) | |
177 | *(size_t *)propptr = fsec->fs_aclsize; | |
178 | break; | |
179 | default: | |
180 | error = EINVAL; | |
181 | break; | |
182 | } | |
183 | if (error) { | |
184 | errno = error; | |
185 | return(-1); | |
186 | } | |
187 | return(0); | |
188 | } | |
189 | ||
190 | int | |
191 | filesec_set_property(filesec_t fsec, filesec_property_t property, const void *propptr) | |
192 | { | |
193 | void *aclbuf; | |
194 | ssize_t aclsize, copysize; | |
195 | acl_t acl; | |
196 | int error; | |
197 | ||
198 | error = 0; | |
199 | switch(property) { | |
200 | case FILESEC_OWNER: | |
201 | if (propptr == _FILESEC_UNSET_PROPERTY) { | |
202 | FS_CLEAR(fsec, FS_VALID_UID); | |
203 | } else { | |
204 | fsec->fs_uid = *(uid_t *)propptr; | |
205 | FS_SET(fsec, FS_VALID_UID); | |
206 | } | |
207 | break; | |
208 | case FILESEC_GROUP: | |
209 | if (propptr == _FILESEC_UNSET_PROPERTY) { | |
210 | FS_CLEAR(fsec, FS_VALID_GID); | |
211 | } else { | |
212 | fsec->fs_gid = *(gid_t *)propptr; | |
213 | FS_SET(fsec, FS_VALID_GID); | |
214 | } | |
215 | break; | |
216 | case FILESEC_UUID: | |
217 | if (propptr == _FILESEC_UNSET_PROPERTY) { | |
218 | FS_CLEAR(fsec, FS_VALID_UUID); | |
219 | } else { | |
220 | uuid_copy(fsec->fs_uuid, *(uuid_t *)propptr); | |
221 | FS_SET(fsec, FS_VALID_UUID); | |
222 | } | |
223 | break; | |
224 | case FILESEC_GRPUUID: | |
225 | if (propptr == _FILESEC_UNSET_PROPERTY) { | |
226 | FS_CLEAR(fsec, FS_VALID_GRPUUID); | |
227 | } else { | |
228 | uuid_copy(fsec->fs_grpuuid, *(uuid_t *)propptr); | |
229 | FS_SET(fsec, FS_VALID_GRPUUID); | |
230 | } | |
231 | break; | |
232 | case FILESEC_MODE: | |
233 | if (propptr == _FILESEC_UNSET_PROPERTY) { | |
234 | FS_CLEAR(fsec, FS_VALID_MODE); | |
235 | } else { | |
236 | fsec->fs_mode = *(mode_t *)propptr; | |
237 | FS_SET(fsec, FS_VALID_MODE); | |
238 | } | |
239 | break; | |
240 | case FILESEC_ACL: | |
241 | if (propptr == _FILESEC_UNSET_PROPERTY) { | |
242 | filesec_discard_aclbuf(fsec); | |
243 | FS_CLEAR(fsec, FS_VALID_ACL); | |
244 | } else if (propptr == _FILESEC_REMOVE_ACL) { | |
245 | filesec_discard_aclbuf(fsec); | |
246 | fsec->fs_aclbuf = _FILESEC_REMOVE_ACL; | |
247 | fsec->fs_aclsize = 0; | |
248 | FS_SET(fsec, FS_VALID_ACL); | |
249 | } else { | |
250 | acl = *(acl_t *)propptr; | |
251 | aclsize = acl_size(acl); | |
252 | if (aclsize < 0) { | |
253 | error = errno; | |
254 | break; | |
255 | } | |
256 | if ((aclbuf = malloc(aclsize)) == NULL) { | |
257 | error = errno; | |
258 | break; | |
259 | } | |
eb1cde05 | 260 | copysize = acl_copy_ext_native(aclbuf, acl, aclsize); |
3d9156a7 A |
261 | if (copysize < 0) { |
262 | free(aclbuf); | |
263 | error = EINVAL; | |
264 | break; | |
265 | } | |
266 | filesec_discard_aclbuf(fsec); | |
267 | fsec->fs_aclbuf = aclbuf; | |
268 | fsec->fs_aclsize = aclsize; | |
269 | FS_SET(fsec, FS_VALID_ACL); | |
270 | } | |
271 | break; | |
272 | case FILESEC_ACL_RAW: | |
273 | filesec_discard_aclbuf(fsec); | |
274 | if ((propptr != NULL) && (*(void **)propptr != NULL)) { | |
275 | fsec->fs_aclbuf = *(void **)propptr; | |
276 | FS_SET(fsec, FS_VALID_ACL); | |
277 | } | |
278 | break; | |
279 | case FILESEC_ACL_ALLOCSIZE: | |
280 | if (propptr != NULL) { | |
281 | fsec->fs_aclsize = *(size_t *)propptr; | |
282 | } else { | |
283 | error = EINVAL; | |
284 | } | |
285 | break; | |
286 | default: | |
287 | error = EINVAL; | |
288 | break; | |
289 | } | |
290 | if (error != 0) { | |
291 | errno = error; | |
292 | return (-1); | |
293 | } | |
294 | return (0); | |
295 | } | |
296 | ||
297 | int | |
298 | filesec_query_property(filesec_t fsec, filesec_property_t property, int *validptr) | |
299 | { | |
300 | int valid, error; | |
301 | ||
302 | error = 0; | |
303 | switch(property) { | |
304 | case FILESEC_OWNER: | |
305 | valid = FS_ISVALID(fsec, FS_VALID_UID); | |
306 | break; | |
307 | case FILESEC_GROUP: | |
308 | valid = FS_ISVALID(fsec, FS_VALID_GID); | |
309 | break; | |
310 | case FILESEC_UUID: | |
311 | valid = FS_ISVALID(fsec, FS_VALID_UUID); | |
312 | break; | |
313 | case FILESEC_GRPUUID: | |
314 | valid = FS_ISVALID(fsec, FS_VALID_GRPUUID); | |
315 | break; | |
316 | case FILESEC_MODE: | |
317 | valid = FS_ISVALID(fsec, FS_VALID_MODE); | |
318 | break; | |
319 | case FILESEC_ACL: | |
320 | case FILESEC_ACL_RAW: | |
321 | case FILESEC_ACL_ALLOCSIZE: | |
322 | valid = FS_ISVALID(fsec, FS_VALID_ACL); | |
323 | break; | |
324 | default: | |
325 | error = EINVAL; | |
326 | break; | |
327 | } | |
328 | ||
329 | if (error != 0) { | |
330 | errno = error; | |
331 | return(-1); | |
332 | } | |
333 | *validptr = valid; | |
334 | return(0); | |
335 | } | |
336 | ||
337 | static void | |
338 | filesec_discard_aclbuf(struct _filesec *fsec) | |
339 | { | |
340 | if (FS_ISVALID(fsec, FS_VALID_ACL)) { | |
341 | if (fsec->fs_aclbuf != _FILESEC_REMOVE_ACL) | |
342 | free(fsec->fs_aclbuf); | |
343 | fsec->fs_aclbuf = NULL; | |
344 | fsec->fs_aclsize = 0; | |
345 | FS_CLEAR(fsec, FS_VALID_ACL); | |
346 | } | |
347 | } |