source: vendor/3.5.2/source3/modules/vfs_hpuxacl.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 16 years ago

Samba 3.5.0: Initial import
File size: 31.2 KB
Line 
1/*
2 * Unix SMB/Netbios implementation.
3 * VFS module to get and set HP-UX ACLs
4 * Copyright (C) Michael Adam 2006,2008
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20/*
21 * This module supports JFS (POSIX) ACLs on VxFS (Veritas * Filesystem).
22 * These are available on HP-UX 11.00 if JFS 3.3 is installed.
23 * On HP-UX 11i (11.11 and above) these ACLs are supported out of
24 * the box.
25 *
26 * There is another form of ACLs on HFS. These ACLs have a
27 * completely different API and their own set of userland tools.
28 * Since HFS seems to be considered deprecated, HFS acls
29 * are not supported. (They could be supported through a separate
30 * vfs-module if there is demand.)
31 */
32
33/* =================================================================
34 * NOTE:
35 *
36 * The original hpux-acl code in lib/sysacls.c was based upon the
37 * solaris acl code in the same file. Now for the new modularized
38 * acl implementation, I have taken the code from vfs_solarisacls.c
39 * and did similar adaptations as were done before, essentially
40 * reusing the original internal aclsort functions.
41 * The check for the presence of the acl() call has been adopted, and
42 * a check for the presence of the aclsort() call has been added.
43 *
44 * Michael Adam <obnox@samba.org>
45 *
46 * ================================================================= */
47
48
49#include "includes.h"
50
51/*
52 * including standard header <sys/aclv.h>
53 *
54 * included here as a quick hack for the special HP-UX-situation:
55 *
56 * The problem is that, on HP-UX, jfs/posix acls are
57 * defined in <sys/aclv.h>, while the deprecated hfs acls
58 * are defined inside <sys/acl.h>.
59 *
60 */
61/* GROUP is defined somewhere else so undef it here... */
62#undef GROUP
63#include <sys/aclv.h>
64/* dl.h: needed to check for acl call via shl_findsym */
65#include <dl.h>
66
67typedef struct acl HPUX_ACE_T;
68typedef struct acl *HPUX_ACL_T;
69typedef int HPUX_ACL_TAG_T; /* the type of an ACL entry */
70typedef ushort HPUX_PERM_T;
71
72/* Structure to capture the count for each type of ACE.
73 * (for hpux_internal_aclsort */
74struct hpux_acl_types {
75 int n_user;
76 int n_def_user;
77 int n_user_obj;
78 int n_def_user_obj;
79
80 int n_group;
81 int n_def_group;
82 int n_group_obj;
83 int n_def_group_obj;
84
85 int n_other;
86 int n_other_obj;
87 int n_def_other_obj;
88
89 int n_class_obj;
90 int n_def_class_obj;
91
92 int n_illegal_obj;
93};
94
95/* for convenience: check if hpux acl entry is a default entry? */
96#define _IS_DEFAULT(ace) ((ace).a_type & ACL_DEFAULT)
97#define _IS_OF_TYPE(ace, type) ( \
98 (((type) == SMB_ACL_TYPE_ACCESS) && !_IS_DEFAULT(ace)) \
99 || \
100 (((type) == SMB_ACL_TYPE_DEFAULT) && _IS_DEFAULT(ace)) \
101)
102
103
104/* prototypes for private functions */
105
106static HPUX_ACL_T hpux_acl_init(int count);
107static bool smb_acl_to_hpux_acl(SMB_ACL_T smb_acl,
108 HPUX_ACL_T *solariacl, int *count,
109 SMB_ACL_TYPE_T type);
110static SMB_ACL_T hpux_acl_to_smb_acl(HPUX_ACL_T hpuxacl, int count,
111 SMB_ACL_TYPE_T type);
112static HPUX_ACL_TAG_T smb_tag_to_hpux_tag(SMB_ACL_TAG_T smb_tag);
113static SMB_ACL_TAG_T hpux_tag_to_smb_tag(HPUX_ACL_TAG_T hpux_tag);
114static bool hpux_add_to_acl(HPUX_ACL_T *hpux_acl, int *count,
115 HPUX_ACL_T add_acl, int add_count, SMB_ACL_TYPE_T type);
116static bool hpux_acl_get_file(const char *name, HPUX_ACL_T *hpuxacl,
117 int *count);
118static SMB_ACL_PERM_T hpux_perm_to_smb_perm(const HPUX_PERM_T perm);
119static HPUX_PERM_T smb_perm_to_hpux_perm(const SMB_ACL_PERM_T perm);
120#if 0
121static bool hpux_acl_check(HPUX_ACL_T hpux_acl, int count);
122#endif
123/* aclsort (internal) and helpers: */
124static bool hpux_acl_sort(HPUX_ACL_T acl, int count);
125static int hpux_internal_aclsort(int acl_count, int calclass, HPUX_ACL_T aclp);
126static void hpux_count_obj(int acl_count, HPUX_ACL_T aclp,
127 struct hpux_acl_types *acl_type_count);
128static void hpux_swap_acl_entries(HPUX_ACE_T *aclp0, HPUX_ACE_T *aclp1);
129static bool hpux_prohibited_duplicate_type(int acl_type);
130
131static bool hpux_acl_call_present(void);
132static bool hpux_aclsort_call_present(void);
133
134
135/* public functions - the api */
136
137SMB_ACL_T hpuxacl_sys_acl_get_file(vfs_handle_struct *handle,
138 const char *path_p,
139 SMB_ACL_TYPE_T type)
140{
141 SMB_ACL_T result = NULL;
142 int count;
143 HPUX_ACL_T hpux_acl = NULL;
144
145 DEBUG(10, ("hpuxacl_sys_acl_get_file called for file '%s'.\n",
146 path_p));
147
148 if(hpux_acl_call_present() == False) {
149 /* Looks like we don't have the acl() system call on HPUX.
150 * May be the system doesn't have the latest version of JFS.
151 */
152 goto done;
153 }
154
155 if (type != SMB_ACL_TYPE_ACCESS && type != SMB_ACL_TYPE_DEFAULT) {
156 DEBUG(10, ("invalid SMB_ACL_TYPE given (%d)\n", type));
157 errno = EINVAL;
158 goto done;
159 }
160
161 DEBUGADD(10, ("getting %s acl\n",
162 ((type == SMB_ACL_TYPE_ACCESS) ? "access" : "default")));
163
164 if (!hpux_acl_get_file(path_p, &hpux_acl, &count)) {
165 goto done;
166 }
167 result = hpux_acl_to_smb_acl(hpux_acl, count, type);
168 if (result == NULL) {
169 DEBUG(10, ("conversion hpux_acl -> smb_acl failed (%s).\n",
170 strerror(errno)));
171 }
172
173 done:
174 DEBUG(10, ("hpuxacl_sys_acl_get_file %s.\n",
175 ((result == NULL) ? "failed" : "succeeded" )));
176 SAFE_FREE(hpux_acl);
177 return result;
178}
179
180
181/*
182 * get the access ACL of a file referred to by a fd
183 */
184SMB_ACL_T hpuxacl_sys_acl_get_fd(vfs_handle_struct *handle,
185 files_struct *fsp)
186{
187 /*
188 * HPUX doesn't have the facl call. Fake it using the path.... JRA.
189 */
190 /* For all I see, the info should already be in the fsp
191 * parameter, but get it again to be safe --- necessary? */
192 files_struct *file_struct_p = file_find_fd(fsp->fh->fd);
193 if (file_struct_p == NULL) {
194 errno = EBADF;
195 return NULL;
196 }
197 /*
198 * We know we're in the same conn context. So we
199 * can use the relative path.
200 */
201 DEBUG(10, ("redirecting call of hpuxacl_sys_acl_get_fd to "
202 "hpuxacl_sys_acl_get_file (no facl syscall on HPUX).\n"));
203
204 return hpuxacl_sys_acl_get_file(handle,
205 file_struct_p->fsp_name->base_name,
206 SMB_ACL_TYPE_ACCESS);
207}
208
209
210int hpuxacl_sys_acl_set_file(vfs_handle_struct *handle,
211 const char *name,
212 SMB_ACL_TYPE_T type,
213 SMB_ACL_T theacl)
214{
215 int ret = -1;
216 HPUX_ACL_T hpux_acl = NULL;
217 int count;
218 struct smb_filename *smb_fname = NULL;
219 NTSTATUS status;
220
221 DEBUG(10, ("hpuxacl_sys_acl_set_file called for file '%s'\n",
222 name));
223
224 status = create_synthetic_smb_fname(talloc_tos(), name, NULL, NULL,
225 &smb_fname);
226 if (!NT_STATUS_IS_OK(status)) {
227 goto done;
228 }
229
230 if(hpux_acl_call_present() == False) {
231 /* Looks like we don't have the acl() system call on HPUX.
232 * May be the system doesn't have the latest version of JFS.
233 */
234 goto done;
235 }
236
237 if ((type != SMB_ACL_TYPE_ACCESS) && (type != SMB_ACL_TYPE_DEFAULT)) {
238 errno = EINVAL;
239 DEBUG(10, ("invalid smb acl type given (%d).\n", type));
240 goto done;
241 }
242 DEBUGADD(10, ("setting %s acl\n",
243 ((type == SMB_ACL_TYPE_ACCESS) ? "access" : "default")));
244
245 if(!smb_acl_to_hpux_acl(theacl, &hpux_acl, &count, type)) {
246 DEBUG(10, ("conversion smb_acl -> hpux_acl failed (%s).\n",
247 strerror(errno)));
248 goto done;
249 }
250
251 /*
252 * if the file is a directory, there is extra work to do:
253 * since the hpux acl call stores both the access acl and
254 * the default acl as provided, we have to get the acl part
255 * that has _not_ been specified in "type" from the file first
256 * and concatenate it with the acl provided.
257 */
258 if (lp_posix_pathnames()) {
259 ret = SMB_VFS_LSTAT(handle->conn, smb_fname);
260 } else {
261 ret = SMB_VFS_STAT(handle->conn, smb_fname);
262 }
263 if (ret != 0) {
264 DEBUG(10, ("Error in stat call: %s\n", strerror(errno)));
265 goto done;
266 }
267 if (S_ISDIR(smb_fname->st.st_ex_mode)) {
268 HPUX_ACL_T other_acl;
269 int other_count;
270 SMB_ACL_TYPE_T other_type;
271
272 other_type = (type == SMB_ACL_TYPE_ACCESS)
273 ? SMB_ACL_TYPE_DEFAULT
274 : SMB_ACL_TYPE_ACCESS;
275 DEBUGADD(10, ("getting acl from filesystem\n"));
276 if (!hpux_acl_get_file(smb_fname->base_name, &other_acl,
277 &other_count)) {
278 DEBUG(10, ("error getting acl from directory\n"));
279 goto done;
280 }
281 DEBUG(10, ("adding %s part of fs acl to given acl\n",
282 ((other_type == SMB_ACL_TYPE_ACCESS)
283 ? "access"
284 : "default")));
285 if (!hpux_add_to_acl(&hpux_acl, &count, other_acl,
286 other_count, other_type))
287 {
288 DEBUG(10, ("error adding other acl.\n"));
289 SAFE_FREE(other_acl);
290 goto done;
291 }
292 SAFE_FREE(other_acl);
293 }
294 else if (type != SMB_ACL_TYPE_ACCESS) {
295 errno = EINVAL;
296 goto done;
297 }
298
299 if (!hpux_acl_sort(hpux_acl, count)) {
300 DEBUG(10, ("resulting acl is not valid!\n"));
301 goto done;
302 }
303 DEBUG(10, ("resulting acl is valid.\n"));
304
305 ret = acl(CONST_DISCARD(char *, smb_fname->base_name), ACL_SET, count,
306 hpux_acl);
307 if (ret != 0) {
308 DEBUG(0, ("ERROR calling acl: %s\n", strerror(errno)));
309 }
310
311 done:
312 DEBUG(10, ("hpuxacl_sys_acl_set_file %s.\n",
313 ((ret != 0) ? "failed" : "succeeded")));
314 TALLOC_FREE(smb_fname);
315 SAFE_FREE(hpux_acl);
316 return ret;
317}
318
319/*
320 * set the access ACL on the file referred to by a fd
321 */
322int hpuxacl_sys_acl_set_fd(vfs_handle_struct *handle,
323 files_struct *fsp,
324 SMB_ACL_T theacl)
325{
326 /*
327 * HPUX doesn't have the facl call. Fake it using the path.... JRA.
328 */
329 /* For all I see, the info should already be in the fsp
330 * parameter, but get it again to be safe --- necessary? */
331 files_struct *file_struct_p = file_find_fd(fsp->fh->fd);
332 if (file_struct_p == NULL) {
333 errno = EBADF;
334 return -1;
335 }
336 /*
337 * We know we're in the same conn context. So we
338 * can use the relative path.
339 */
340 DEBUG(10, ("redirecting call of hpuxacl_sys_acl_set_fd to "
341 "hpuxacl_sys_acl_set_file (no facl syscall on HPUX)\n"));
342
343 return hpuxacl_sys_acl_set_file(handle,
344 file_struct_p->fsp_name->base_name,
345 SMB_ACL_TYPE_ACCESS, theacl);
346}
347
348
349/*
350 * delete the default ACL of a directory
351 *
352 * This is achieved by fetching the access ACL and rewriting it
353 * directly, via the hpux system call: the ACL_SET call on
354 * directories writes both the access and the default ACL as provided.
355 *
356 * XXX: posix acl_delete_def_file returns an error if
357 * the file referred to by path is not a directory.
358 * this function does not complain but the actions
359 * have no effect on a file other than a directory.
360 * But sys_acl_delete_default_file is only called in
361 * smbd/posixacls.c after having checked that the file
362 * is a directory, anyways. So implementing the extra
363 * check is considered unnecessary. --- Agreed? XXX
364 */
365int hpuxacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
366 const char *path)
367{
368 SMB_ACL_T smb_acl;
369 int ret = -1;
370 HPUX_ACL_T hpux_acl;
371 int count;
372
373 DEBUG(10, ("entering hpuxacl_sys_acl_delete_def_file.\n"));
374
375 smb_acl = hpuxacl_sys_acl_get_file(handle, path,
376 SMB_ACL_TYPE_ACCESS);
377 if (smb_acl == NULL) {
378 DEBUG(10, ("getting file acl failed!\n"));
379 goto done;
380 }
381 if (!smb_acl_to_hpux_acl(smb_acl, &hpux_acl, &count,
382 SMB_ACL_TYPE_ACCESS))
383 {
384 DEBUG(10, ("conversion smb_acl -> hpux_acl failed.\n"));
385 goto done;
386 }
387 if (!hpux_acl_sort(hpux_acl, count)) {
388 DEBUG(10, ("resulting acl is not valid!\n"));
389 goto done;
390 }
391 ret = acl(CONST_DISCARD(char *, path), ACL_SET, count, hpux_acl);
392 if (ret != 0) {
393 DEBUG(10, ("settinge file acl failed!\n"));
394 }
395
396 done:
397 DEBUG(10, ("hpuxacl_sys_acl_delete_def_file %s.\n",
398 ((ret != 0) ? "failed" : "succeeded" )));
399 SAFE_FREE(smb_acl);
400 return ret;
401}
402
403
404/*
405 * private functions
406 */
407
408static HPUX_ACL_T hpux_acl_init(int count)
409{
410 HPUX_ACL_T hpux_acl =
411 (HPUX_ACL_T)SMB_MALLOC(sizeof(HPUX_ACE_T) * count);
412 if (hpux_acl == NULL) {
413 errno = ENOMEM;
414 }
415 return hpux_acl;
416}
417
418/*
419 * Convert the SMB acl to the ACCESS or DEFAULT part of a
420 * hpux ACL, as desired.
421 */
422static bool smb_acl_to_hpux_acl(SMB_ACL_T smb_acl,
423 HPUX_ACL_T *hpux_acl, int *count,
424 SMB_ACL_TYPE_T type)
425{
426 bool ret = False;
427 int i;
428 int check_which, check_rc;
429
430 DEBUG(10, ("entering smb_acl_to_hpux_acl\n"));
431
432 *hpux_acl = NULL;
433 *count = 0;
434
435 for (i = 0; i < smb_acl->count; i++) {
436 const struct smb_acl_entry *smb_entry = &(smb_acl->acl[i]);
437 HPUX_ACE_T hpux_entry;
438
439 ZERO_STRUCT(hpux_entry);
440
441 hpux_entry.a_type = smb_tag_to_hpux_tag(smb_entry->a_type);
442 if (hpux_entry.a_type == 0) {
443 DEBUG(10, ("smb_tag to hpux_tag failed\n"));
444 goto fail;
445 }
446 switch(hpux_entry.a_type) {
447 case USER:
448 DEBUG(10, ("got tag type USER with uid %d\n",
449 smb_entry->uid));
450 hpux_entry.a_id = (uid_t)smb_entry->uid;
451 break;
452 case GROUP:
453 DEBUG(10, ("got tag type GROUP with gid %d\n",
454 smb_entry->gid));
455 hpux_entry.a_id = (uid_t)smb_entry->gid;
456 break;
457 default:
458 break;
459 }
460 if (type == SMB_ACL_TYPE_DEFAULT) {
461 DEBUG(10, ("adding default bit to hpux ace\n"));
462 hpux_entry.a_type |= ACL_DEFAULT;
463 }
464
465 hpux_entry.a_perm =
466 smb_perm_to_hpux_perm(smb_entry->a_perm);
467 DEBUG(10, ("assembled the following hpux ace:\n"));
468 DEBUGADD(10, (" - type: 0x%04x\n", hpux_entry.a_type));
469 DEBUGADD(10, (" - id: %d\n", hpux_entry.a_id));
470 DEBUGADD(10, (" - perm: o%o\n", hpux_entry.a_perm));
471 if (!hpux_add_to_acl(hpux_acl, count, &hpux_entry,
472 1, type))
473 {
474 DEBUG(10, ("error adding acl entry\n"));
475 goto fail;
476 }
477 DEBUG(10, ("count after adding: %d (i: %d)\n", *count, i));
478 DEBUG(10, ("test, if entry has been copied into acl:\n"));
479 DEBUGADD(10, (" - type: 0x%04x\n",
480 (*hpux_acl)[(*count)-1].a_type));
481 DEBUGADD(10, (" - id: %d\n",
482 (*hpux_acl)[(*count)-1].a_id));
483 DEBUGADD(10, (" - perm: o%o\n",
484 (*hpux_acl)[(*count)-1].a_perm));
485 }
486
487 ret = True;
488 goto done;
489
490 fail:
491 SAFE_FREE(*hpux_acl);
492 done:
493 DEBUG(10, ("smb_acl_to_hpux_acl %s\n",
494 ((ret == True) ? "succeeded" : "failed")));
495 return ret;
496}
497
498/*
499 * convert either the access or the default part of a
500 * soaris acl to the SMB_ACL format.
501 */
502static SMB_ACL_T hpux_acl_to_smb_acl(HPUX_ACL_T hpux_acl, int count,
503 SMB_ACL_TYPE_T type)
504{
505 SMB_ACL_T result;
506 int i;
507
508 if ((result = sys_acl_init(0)) == NULL) {
509 DEBUG(10, ("error allocating memory for SMB_ACL\n"));
510 goto fail;
511 }
512 for (i = 0; i < count; i++) {
513 SMB_ACL_ENTRY_T smb_entry;
514 SMB_ACL_PERM_T smb_perm;
515
516 if (!_IS_OF_TYPE(hpux_acl[i], type)) {
517 continue;
518 }
519 result = SMB_REALLOC(result,
520 sizeof(struct smb_acl_t) +
521 (sizeof(struct smb_acl_entry) *
522 (result->count + 1)));
523 if (result == NULL) {
524 DEBUG(10, ("error reallocating memory for SMB_ACL\n"));
525 goto fail;
526 }
527 smb_entry = &result->acl[result->count];
528 if (sys_acl_set_tag_type(smb_entry,
529 hpux_tag_to_smb_tag(hpux_acl[i].a_type)) != 0)
530 {
531 DEBUG(10, ("invalid tag type given: 0x%04x\n",
532 hpux_acl[i].a_type));
533 goto fail;
534 }
535 /* intentionally not checking return code here: */
536 sys_acl_set_qualifier(smb_entry, (void *)&hpux_acl[i].a_id);
537 smb_perm = hpux_perm_to_smb_perm(hpux_acl[i].a_perm);
538 if (sys_acl_set_permset(smb_entry, &smb_perm) != 0) {
539 DEBUG(10, ("invalid permset given: %d\n",
540 hpux_acl[i].a_perm));
541 goto fail;
542 }
543 result->count += 1;
544 }
545 goto done;
546
547 fail:
548 SAFE_FREE(result);
549 done:
550 DEBUG(10, ("hpux_acl_to_smb_acl %s\n",
551 ((result == NULL) ? "failed" : "succeeded")));
552 return result;
553}
554
555
556
557static HPUX_ACL_TAG_T smb_tag_to_hpux_tag(SMB_ACL_TAG_T smb_tag)
558{
559 HPUX_ACL_TAG_T hpux_tag = 0;
560
561 DEBUG(10, ("smb_tag_to_hpux_tag\n"));
562 DEBUGADD(10, (" --> got smb tag 0x%04x\n", smb_tag));
563
564 switch (smb_tag) {
565 case SMB_ACL_USER:
566 hpux_tag = USER;
567 break;
568 case SMB_ACL_USER_OBJ:
569 hpux_tag = USER_OBJ;
570 break;
571 case SMB_ACL_GROUP:
572 hpux_tag = GROUP;
573 break;
574 case SMB_ACL_GROUP_OBJ:
575 hpux_tag = GROUP_OBJ;
576 break;
577 case SMB_ACL_OTHER:
578 hpux_tag = OTHER_OBJ;
579 break;
580 case SMB_ACL_MASK:
581 hpux_tag = CLASS_OBJ;
582 break;
583 default:
584 DEBUGADD(10, (" !!! unknown smb tag type 0x%04x\n", smb_tag));
585 break;
586 }
587
588 DEBUGADD(10, (" --> determined hpux tag 0x%04x\n", hpux_tag));
589
590 return hpux_tag;
591}
592
593static SMB_ACL_TAG_T hpux_tag_to_smb_tag(HPUX_ACL_TAG_T hpux_tag)
594{
595 SMB_ACL_TAG_T smb_tag = 0;
596
597 DEBUG(10, ("hpux_tag_to_smb_tag:\n"));
598 DEBUGADD(10, (" --> got hpux tag 0x%04x\n", hpux_tag));
599
600 hpux_tag &= ~ACL_DEFAULT;
601
602 switch (hpux_tag) {
603 case USER:
604 smb_tag = SMB_ACL_USER;
605 break;
606 case USER_OBJ:
607 smb_tag = SMB_ACL_USER_OBJ;
608 break;
609 case GROUP:
610 smb_tag = SMB_ACL_GROUP;
611 break;
612 case GROUP_OBJ:
613 smb_tag = SMB_ACL_GROUP_OBJ;
614 break;
615 case OTHER_OBJ:
616 smb_tag = SMB_ACL_OTHER;
617 break;
618 case CLASS_OBJ:
619 smb_tag = SMB_ACL_MASK;
620 break;
621 default:
622 DEBUGADD(10, (" !!! unknown hpux tag type: 0x%04x\n",
623 hpux_tag));
624 break;
625 }
626
627 DEBUGADD(10, (" --> determined smb tag 0x%04x\n", smb_tag));
628
629 return smb_tag;
630}
631
632
633/*
634 * The permission bits used in the following two permission conversion
635 * functions are same, but the functions make us independent of the concrete
636 * permission data types.
637 */
638static SMB_ACL_PERM_T hpux_perm_to_smb_perm(const HPUX_PERM_T perm)
639{
640 SMB_ACL_PERM_T smb_perm = 0;
641 smb_perm |= ((perm & SMB_ACL_READ) ? SMB_ACL_READ : 0);
642 smb_perm |= ((perm & SMB_ACL_WRITE) ? SMB_ACL_WRITE : 0);
643 smb_perm |= ((perm & SMB_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
644 return smb_perm;
645}
646
647
648static HPUX_PERM_T smb_perm_to_hpux_perm(const SMB_ACL_PERM_T perm)
649{
650 HPUX_PERM_T hpux_perm = 0;
651 hpux_perm |= ((perm & SMB_ACL_READ) ? SMB_ACL_READ : 0);
652 hpux_perm |= ((perm & SMB_ACL_WRITE) ? SMB_ACL_WRITE : 0);
653 hpux_perm |= ((perm & SMB_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
654 return hpux_perm;
655}
656
657
658static bool hpux_acl_get_file(const char *name, HPUX_ACL_T *hpux_acl,
659 int *count)
660{
661 bool result = False;
662 static HPUX_ACE_T dummy_ace;
663
664 DEBUG(10, ("hpux_acl_get_file called for file '%s'\n", name));
665
666 /*
667 * The original code tries some INITIAL_ACL_SIZE
668 * and only did the ACL_CNT call upon failure
669 * (for performance reasons).
670 * For the sake of simplicity, I skip this for now.
671 *
672 * NOTE: There is a catch here on HP-UX: acl with cmd parameter
673 * ACL_CNT fails with errno EINVAL when called with a NULL
674 * pointer as last argument. So we need to use a dummy acl
675 * struct here (we make it static so it does not need to be
676 * instantiated or malloced each time this function is
677 * called). Btw: the count parameter does not seem to matter...
678 */
679 *count = acl(CONST_DISCARD(char *, name), ACL_CNT, 0, &dummy_ace);
680 if (*count < 0) {
681 DEBUG(10, ("acl ACL_CNT failed: %s\n", strerror(errno)));
682 goto done;
683 }
684 *hpux_acl = hpux_acl_init(*count);
685 if (*hpux_acl == NULL) {
686 DEBUG(10, ("error allocating memory for hpux acl...\n"));
687 goto done;
688 }
689 *count = acl(CONST_DISCARD(char *, name), ACL_GET, *count, *hpux_acl);
690 if (*count < 0) {
691 DEBUG(10, ("acl ACL_GET failed: %s\n", strerror(errno)));
692 goto done;
693 }
694 result = True;
695
696 done:
697 DEBUG(10, ("hpux_acl_get_file %s.\n",
698 ((result == True) ? "succeeded" : "failed" )));
699 return result;
700}
701
702
703
704
705/*
706 * Add entries to a hpux ACL.
707 *
708 * Entries are directly added to the hpuxacl parameter.
709 * if memory allocation fails, this may result in hpuxacl
710 * being NULL. if the resulting acl is to be checked and is
711 * not valid, it is kept in hpuxacl but False is returned.
712 *
713 * The type of ACEs (access/default) to be added to the ACL can
714 * be selected via the type parameter.
715 * I use the SMB_ACL_TYPE_T type here. Since SMB_ACL_TYPE_ACCESS
716 * is defined as "0", this means that one can only add either
717 * access or default ACEs from the given ACL, not both at the same
718 * time. If it should become necessary to add all of an ACL, one
719 * would have to replace this parameter by another type.
720 */
721static bool hpux_add_to_acl(HPUX_ACL_T *hpux_acl, int *count,
722 HPUX_ACL_T add_acl, int add_count,
723 SMB_ACL_TYPE_T type)
724{
725 int i;
726
727 if ((type != SMB_ACL_TYPE_ACCESS) && (type != SMB_ACL_TYPE_DEFAULT))
728 {
729 DEBUG(10, ("invalid acl type given: %d\n", type));
730 errno = EINVAL;
731 return False;
732 }
733 for (i = 0; i < add_count; i++) {
734 if (!_IS_OF_TYPE(add_acl[i], type)) {
735 continue;
736 }
737 ADD_TO_ARRAY(NULL, HPUX_ACE_T, add_acl[i],
738 hpux_acl, count);
739 if (hpux_acl == NULL) {
740 DEBUG(10, ("error enlarging acl.\n"));
741 errno = ENOMEM;
742 return False;
743 }
744 }
745 return True;
746}
747
748
749/*
750 * sort the ACL and check it for validity
751 *
752 * [original comment from lib/sysacls.c:]
753 *
754 * if it's a minimal ACL with only 4 entries then we
755 * need to recalculate the mask permissions to make
756 * sure that they are the same as the GROUP_OBJ
757 * permissions as required by the UnixWare acl() system call.
758 *
759 * (note: since POSIX allows minimal ACLs which only contain
760 * 3 entries - ie there is no mask entry - we should, in theory,
761 * check for this and add a mask entry if necessary - however
762 * we "know" that the caller of this interface always specifies
763 * a mask, so in practice "this never happens" (tm) - if it *does*
764 * happen aclsort() will fail and return an error and someone will
765 * have to fix it...)
766 */
767static bool hpux_acl_sort(HPUX_ACL_T hpux_acl, int count)
768{
769 int fixmask = (count <= 4);
770
771 if (hpux_internal_aclsort(count, fixmask, hpux_acl) != 0) {
772 errno = EINVAL;
773 return False;
774 }
775 return True;
776}
777
778
779/*
780 * Helpers for hpux_internal_aclsort:
781 * - hpux_count_obj
782 * - hpux_swap_acl_entries
783 * - hpux_prohibited_duplicate_type
784 * - hpux_get_needed_class_perm
785 */
786
787/* hpux_count_obj:
788 * Counts the different number of objects in a given array of ACL
789 * structures.
790 * Inputs:
791 *
792 * acl_count - Count of ACLs in the array of ACL strucutres.
793 * aclp - Array of ACL structures.
794 * acl_type_count - Pointer to acl_types structure. Should already be
795 * allocated.
796 * Output:
797 *
798 * acl_type_count - This structure is filled up with counts of various
799 * acl types.
800 */
801
802static void hpux_count_obj(int acl_count, HPUX_ACL_T aclp, struct hpux_acl_types *acl_type_count)
803{
804 int i;
805
806 memset(acl_type_count, 0, sizeof(struct hpux_acl_types));
807
808 for(i=0;i<acl_count;i++) {
809 switch(aclp[i].a_type) {
810 case USER:
811 acl_type_count->n_user++;
812 break;
813 case USER_OBJ:
814 acl_type_count->n_user_obj++;
815 break;
816 case DEF_USER_OBJ:
817 acl_type_count->n_def_user_obj++;
818 break;
819 case GROUP:
820 acl_type_count->n_group++;
821 break;
822 case GROUP_OBJ:
823 acl_type_count->n_group_obj++;
824 break;
825 case DEF_GROUP_OBJ:
826 acl_type_count->n_def_group_obj++;
827 break;
828 case OTHER_OBJ:
829 acl_type_count->n_other_obj++;
830 break;
831 case DEF_OTHER_OBJ:
832 acl_type_count->n_def_other_obj++;
833 break;
834 case CLASS_OBJ:
835 acl_type_count->n_class_obj++;
836 break;
837 case DEF_CLASS_OBJ:
838 acl_type_count->n_def_class_obj++;
839 break;
840 case DEF_USER:
841 acl_type_count->n_def_user++;
842 break;
843 case DEF_GROUP:
844 acl_type_count->n_def_group++;
845 break;
846 default:
847 acl_type_count->n_illegal_obj++;
848 break;
849 }
850 }
851}
852
853/* hpux_swap_acl_entries: Swaps two ACL entries.
854 *
855 * Inputs: aclp0, aclp1 - ACL entries to be swapped.
856 */
857
858static void hpux_swap_acl_entries(HPUX_ACE_T *aclp0, HPUX_ACE_T *aclp1)
859{
860 HPUX_ACE_T temp_acl;
861
862 temp_acl.a_type = aclp0->a_type;
863 temp_acl.a_id = aclp0->a_id;
864 temp_acl.a_perm = aclp0->a_perm;
865
866 aclp0->a_type = aclp1->a_type;
867 aclp0->a_id = aclp1->a_id;
868 aclp0->a_perm = aclp1->a_perm;
869
870 aclp1->a_type = temp_acl.a_type;
871 aclp1->a_id = temp_acl.a_id;
872 aclp1->a_perm = temp_acl.a_perm;
873}
874
875/* hpux_prohibited_duplicate_type
876 * Identifies if given ACL type can have duplicate entries or
877 * not.
878 *
879 * Inputs: acl_type - ACL Type.
880 *
881 * Outputs:
882 *
883 * Return..
884 *
885 * True - If the ACL type matches any of the prohibited types.
886 * False - If the ACL type doesn't match any of the prohibited types.
887 */
888
889static bool hpux_prohibited_duplicate_type(int acl_type)
890{
891 switch(acl_type) {
892 case USER:
893 case GROUP:
894 case DEF_USER:
895 case DEF_GROUP:
896 return True;
897 default:
898 return False;
899 }
900}
901
902/* hpux_get_needed_class_perm
903 * Returns the permissions of a ACL structure only if the ACL
904 * type matches one of the pre-determined types for computing
905 * CLASS_OBJ permissions.
906 *
907 * Inputs: aclp - Pointer to ACL structure.
908 */
909
910static int hpux_get_needed_class_perm(struct acl *aclp)
911{
912 switch(aclp->a_type) {
913 case USER:
914 case GROUP_OBJ:
915 case GROUP:
916 case DEF_USER_OBJ:
917 case DEF_USER:
918 case DEF_GROUP_OBJ:
919 case DEF_GROUP:
920 case DEF_CLASS_OBJ:
921 case DEF_OTHER_OBJ:
922 return aclp->a_perm;
923 default:
924 return 0;
925 }
926}
927
928/* hpux_internal_aclsort: aclsort for HPUX.
929 *
930 * -> The aclsort() system call is availabe on the latest HPUX General
931 * -> Patch Bundles. So for HPUX, we developed our version of aclsort
932 * -> function. Because, we don't want to update to a new
933 * -> HPUX GR bundle just for aclsort() call.
934 *
935 * aclsort sorts the array of ACL structures as per the description in
936 * aclsort man page. Refer to aclsort man page for more details
937 *
938 * Inputs:
939 *
940 * acl_count - Count of ACLs in the array of ACL structures.
941 * calclass - If this is not zero, then we compute the CLASS_OBJ
942 * permissions.
943 * aclp - Array of ACL structures.
944 *
945 * Outputs:
946 *
947 * aclp - Sorted array of ACL structures.
948 *
949 * Outputs:
950 *
951 * Returns 0 for success -1 for failure. Prints a message to the Samba
952 * debug log in case of failure.
953 */
954
955static int hpux_internal_aclsort(int acl_count, int calclass, HPUX_ACL_T aclp)
956{
957 struct hpux_acl_types acl_obj_count;
958 int n_class_obj_perm = 0;
959 int i, j;
960
961 DEBUG(10,("Entering hpux_internal_aclsort. (calclass = %d)\n", calclass));
962
963 if (hpux_aclsort_call_present()) {
964 DEBUG(10, ("calling hpux aclsort\n"));
965 return aclsort(acl_count, calclass, aclp);
966 }
967
968 DEBUG(10, ("using internal aclsort\n"));
969
970 if(!acl_count) {
971 DEBUG(10,("Zero acl count passed. Returning Success\n"));
972 return 0;
973 }
974
975 if(aclp == NULL) {
976 DEBUG(0,("Null ACL pointer in hpux_acl_sort. Returning Failure. \n"));
977 return -1;
978 }
979
980 /* Count different types of ACLs in the ACLs array */
981
982 hpux_count_obj(acl_count, aclp, &acl_obj_count);
983
984 /* There should be only one entry each of type USER_OBJ, GROUP_OBJ,
985 * CLASS_OBJ and OTHER_OBJ
986 */
987
988 if ( (acl_obj_count.n_user_obj != 1) ||
989 (acl_obj_count.n_group_obj != 1) ||
990 (acl_obj_count.n_class_obj != 1) ||
991 (acl_obj_count.n_other_obj != 1) )
992 {
993 DEBUG(0,("hpux_internal_aclsort: More than one entry or no entries for \
994USER OBJ or GROUP_OBJ or OTHER_OBJ or CLASS_OBJ\n"));
995 return -1;
996 }
997
998 /* If any of the default objects are present, there should be only
999 * one of them each.
1000 */
1001
1002 if ( (acl_obj_count.n_def_user_obj > 1) ||
1003 (acl_obj_count.n_def_group_obj > 1) ||
1004 (acl_obj_count.n_def_other_obj > 1) ||
1005 (acl_obj_count.n_def_class_obj > 1) )
1006 {
1007 DEBUG(0,("hpux_internal_aclsort: More than one entry for DEF_CLASS_OBJ \
1008or DEF_USER_OBJ or DEF_GROUP_OBJ or DEF_OTHER_OBJ\n"));
1009 return -1;
1010 }
1011
1012 /* We now have proper number of OBJ and DEF_OBJ entries. Now sort the acl
1013 * structures.
1014 *
1015 * Sorting crieteria - First sort by ACL type. If there are multiple entries of
1016 * same ACL type, sort by ACL id.
1017 *
1018 * I am using the trival kind of sorting method here because, performance isn't
1019 * really effected by the ACLs feature. More over there aren't going to be more
1020 * than 17 entries on HPUX.
1021 */
1022
1023 for(i=0; i<acl_count;i++) {
1024 for (j=i+1; j<acl_count; j++) {
1025 if( aclp[i].a_type > aclp[j].a_type ) {
1026 /* ACL entries out of order, swap them */
1027 hpux_swap_acl_entries((aclp+i), (aclp+j));
1028 } else if ( aclp[i].a_type == aclp[j].a_type ) {
1029 /* ACL entries of same type, sort by id */
1030 if(aclp[i].a_id > aclp[j].a_id) {
1031 hpux_swap_acl_entries((aclp+i), (aclp+j));
1032 } else if (aclp[i].a_id == aclp[j].a_id) {
1033 /* We have a duplicate entry. */
1034 if(hpux_prohibited_duplicate_type(aclp[i].a_type)) {
1035 DEBUG(0, ("hpux_internal_aclsort: Duplicate entry: Type(hex): %x Id: %d\n",
1036 aclp[i].a_type, aclp[i].a_id));
1037 return -1;
1038 }
1039 }
1040 }
1041 }
1042 }
1043
1044 /* set the class obj permissions to the computed one. */
1045 if(calclass) {
1046 int n_class_obj_index = -1;
1047
1048 for(i=0;i<acl_count;i++) {
1049 n_class_obj_perm |= hpux_get_needed_class_perm((aclp+i));
1050
1051 if(aclp[i].a_type == CLASS_OBJ)
1052 n_class_obj_index = i;
1053 }
1054 aclp[n_class_obj_index].a_perm = n_class_obj_perm;
1055 }
1056
1057 return 0;
1058}
1059
1060
1061/*
1062 * hpux_acl_call_present:
1063 *
1064 * This checks if the POSIX ACL system call is defined
1065 * which basically corresponds to whether JFS 3.3 or
1066 * higher is installed. If acl() was called when it
1067 * isn't defined, it causes the process to core dump
1068 * so it is important to check this and avoid acl()
1069 * calls if it isn't there.
1070 */
1071
1072static bool hpux_acl_call_present(void)
1073{
1074
1075 shl_t handle = NULL;
1076 void *value;
1077 int ret_val=0;
1078 static bool already_checked = False;
1079
1080 if(already_checked)
1081 return True;
1082
1083 errno = 0;
1084
1085 ret_val = shl_findsym(&handle, "acl", TYPE_PROCEDURE, &value);
1086
1087 if(ret_val != 0) {
1088 DEBUG(5, ("hpux_acl_call_present: shl_findsym() returned %d, errno = %d, error %s\n",
1089 ret_val, errno, strerror(errno)));
1090 DEBUG(5,("hpux_acl_call_present: acl() system call is not present. Check if you have JFS 3.3 and above?\n"));
1091 errno = ENOSYS;
1092 return False;
1093 }
1094
1095 DEBUG(10,("hpux_acl_call_present: acl() system call is present. We have JFS 3.3 or above \n"));
1096
1097 already_checked = True;
1098 return True;
1099}
1100
1101/*
1102 * runtime check for presence of aclsort library call.
1103 * same code as for acl call. if there are more of these,
1104 * a dispatcher function could be handy...
1105 */
1106
1107static bool hpux_aclsort_call_present(void)
1108{
1109 shl_t handle = NULL;
1110 void *value;
1111 int ret_val = 0;
1112 static bool already_checked = False;
1113
1114 if (already_checked) {
1115 return True;
1116 }
1117
1118 errno = 0;
1119 ret_val = shl_findsym(&handle, "aclsort", TYPE_PROCEDURE, &value);
1120 if (ret_val != 0) {
1121 DEBUG(5, ("hpux_aclsort_call_present: shl_findsym "
1122 "returned %d, errno = %d, error %s",
1123 ret_val, errno, strerror(errno)));
1124 DEBUG(5, ("hpux_aclsort_call_present: "
1125 "aclsort() function not available.\n"));
1126 return False;
1127 }
1128 DEBUG(10,("hpux_aclsort_call_present: aclsort() function present.\n"));
1129 already_checked = True;
1130 return True;
1131}
1132
1133#if 0
1134/*
1135 * acl check function:
1136 * unused at the moment but could be used to get more
1137 * concrete error messages for debugging...
1138 * (acl sort just says that the acl is invalid...)
1139 */
1140static bool hpux_acl_check(HPUX_ACL_T hpux_acl, int count)
1141{
1142 int check_rc;
1143 int check_which;
1144
1145 check_rc = aclcheck(hpux_acl, count, &check_which);
1146 if (check_rc != 0) {
1147 DEBUG(10, ("acl is not valid:\n"));
1148 DEBUGADD(10, (" - return code: %d\n", check_rc));
1149 DEBUGADD(10, (" - which: %d\n", check_which));
1150 if (check_which != -1) {
1151 DEBUGADD(10, (" - invalid entry:\n"));
1152 DEBUGADD(10, (" * type: %d:\n",
1153 hpux_acl[check_which].a_type));
1154 DEBUGADD(10, (" * id: %d\n",
1155 hpux_acl[check_which].a_id));
1156 DEBUGADD(10, (" * perm: 0o%o\n",
1157 hpux_acl[check_which].a_perm));
1158 }
1159 return False;
1160 }
1161 return True;
1162}
1163#endif
1164
1165/* VFS operations structure */
1166
1167static struct vfs_fn_pointers hpuxacl_fns = {
1168 .sys_acl_get_file = hpuxacl_sys_acl_get_file,
1169 .sys_acl_get_fd = hpuxacl_sys_acl_get_fd,
1170 .sys_acl_set_file = hpuxacl_sys_acl_set_file,
1171 .sys_acl_set_fd = hpuxacl_sys_acl_set_fd,
1172 .sys_acl_delete_def_file = hpuxacl_sys_acl_delete_def_file,
1173};
1174
1175NTSTATUS vfs_hpuxacl_init(void)
1176{
1177 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "hpuxacl",
1178 &hpuxacl_fns);
1179}
1180
1181/* ENTE */
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