2 * Unix SMB/Netbios implementation.
3 * VFS module to get and set HP-UX ACLs
4 * Copyright (C) Michael Adam 2006,2008
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.
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.
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/>.
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
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.)
33 /* =================================================================
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.
44 * Michael Adam <obnox@samba.org>
46 * ================================================================= */
50 #include "system/filesys.h"
51 #include "smbd/smbd.h"
52 #include "modules/vfs_hpuxacl.h"
56 * including standard header <sys/aclv.h>
58 * included here as a quick hack for the special HP-UX-situation:
60 * The problem is that, on HP-UX, jfs/posix acls are
61 * defined in <sys/aclv.h>, while the deprecated hfs acls
62 * are defined inside <sys/acl.h>.
65 /* GROUP is defined somewhere else so undef it here... */
68 /* dl.h: needed to check for acl call via shl_findsym */
71 typedef struct acl HPUX_ACE_T;
72 typedef struct acl *HPUX_ACL_T;
73 typedef int HPUX_ACL_TAG_T; /* the type of an ACL entry */
74 typedef ushort HPUX_PERM_T;
76 /* Structure to capture the count for each type of ACE.
77 * (for hpux_internal_aclsort */
78 struct hpux_acl_types {
99 /* for convenience: check if hpux acl entry is a default entry? */
100 #define _IS_DEFAULT(ace) ((ace).a_type & ACL_DEFAULT)
101 #define _IS_OF_TYPE(ace, type) ( \
102 (((type) == SMB_ACL_TYPE_ACCESS) && !_IS_DEFAULT(ace)) \
104 (((type) == SMB_ACL_TYPE_DEFAULT) && _IS_DEFAULT(ace)) \
108 /* prototypes for private functions */
110 static HPUX_ACL_T hpux_acl_init(int count);
111 static bool smb_acl_to_hpux_acl(SMB_ACL_T smb_acl,
112 HPUX_ACL_T *solariacl, int *count,
113 SMB_ACL_TYPE_T type);
114 static SMB_ACL_T hpux_acl_to_smb_acl(HPUX_ACL_T hpuxacl, int count,
115 SMB_ACL_TYPE_T type, TALLOC_CTX *mem_ctx);
116 static HPUX_ACL_TAG_T smb_tag_to_hpux_tag(SMB_ACL_TAG_T smb_tag);
117 static SMB_ACL_TAG_T hpux_tag_to_smb_tag(HPUX_ACL_TAG_T hpux_tag);
118 static bool hpux_add_to_acl(HPUX_ACL_T *hpux_acl, int *count,
119 HPUX_ACL_T add_acl, int add_count, SMB_ACL_TYPE_T type);
120 static bool hpux_acl_get_file(const char *name, HPUX_ACL_T *hpuxacl,
122 static SMB_ACL_PERM_T hpux_perm_to_smb_perm(const HPUX_PERM_T perm);
123 static HPUX_PERM_T smb_perm_to_hpux_perm(const SMB_ACL_PERM_T perm);
125 static bool hpux_acl_check(HPUX_ACL_T hpux_acl, int count);
127 /* aclsort (internal) and helpers: */
128 static bool hpux_acl_sort(HPUX_ACL_T acl, int count);
129 static int hpux_internal_aclsort(int acl_count, int calclass, HPUX_ACL_T aclp);
130 static void hpux_count_obj(int acl_count, HPUX_ACL_T aclp,
131 struct hpux_acl_types *acl_type_count);
132 static void hpux_swap_acl_entries(HPUX_ACE_T *aclp0, HPUX_ACE_T *aclp1);
133 static bool hpux_prohibited_duplicate_type(int acl_type);
135 static bool hpux_acl_call_present(void);
136 static bool hpux_aclsort_call_present(void);
139 /* public functions - the api */
141 SMB_ACL_T hpuxacl_sys_acl_get_file(vfs_handle_struct *handle,
142 const struct smb_filename *smb_fname,
146 SMB_ACL_T result = NULL;
148 HPUX_ACL_T hpux_acl = NULL;
149 const char *path_p = smb_fname->base_name;
151 DEBUG(10, ("hpuxacl_sys_acl_get_file called for file '%s'.\n",
154 if(hpux_acl_call_present() == False) {
155 /* Looks like we don't have the acl() system call on HPUX.
156 * May be the system doesn't have the latest version of JFS.
161 if (type != SMB_ACL_TYPE_ACCESS && type != SMB_ACL_TYPE_DEFAULT) {
162 DEBUG(10, ("invalid SMB_ACL_TYPE given (%d)\n", type));
167 DEBUGADD(10, ("getting %s acl\n",
168 ((type == SMB_ACL_TYPE_ACCESS) ? "access" : "default")));
170 if (!hpux_acl_get_file(path_p, &hpux_acl, &count)) {
173 result = hpux_acl_to_smb_acl(hpux_acl, count, type, mem_ctx);
174 if (result == NULL) {
175 DEBUG(10, ("conversion hpux_acl -> smb_acl failed (%s).\n",
180 DEBUG(10, ("hpuxacl_sys_acl_get_file %s.\n",
181 ((result == NULL) ? "failed" : "succeeded" )));
188 * get the access ACL of a file referred to by a fd
190 SMB_ACL_T hpuxacl_sys_acl_get_fd(vfs_handle_struct *handle,
195 * HPUX doesn't have the facl call. Fake it using the path.... JRA.
198 * We know we're in the same conn context. So we
199 * can use the relative path.
201 DEBUG(10, ("redirecting call of hpuxacl_sys_acl_get_fd to "
202 "hpuxacl_sys_acl_get_file (no facl syscall on HPUX).\n"));
204 return hpuxacl_sys_acl_get_file(handle,
205 fsp->fsp_name->base_name,
211 int hpuxacl_sys_acl_set_file(vfs_handle_struct *handle,
212 const struct smb_filename *smb_fname_in,
217 HPUX_ACL_T hpux_acl = NULL;
219 struct smb_filename *smb_fname = NULL;
222 DEBUG(10, ("hpuxacl_sys_acl_set_file called for file '%s'\n",
225 smb_fname = cp_smb_filename(talloc_tos(), smb_fname_in);
226 if (smb_fname == NULL) {
227 status = NT_STATUS_NO_MEMORY;
231 if(hpux_acl_call_present() == False) {
232 /* Looks like we don't have the acl() system call on HPUX.
233 * May be the system doesn't have the latest version of JFS.
238 if ((type != SMB_ACL_TYPE_ACCESS) && (type != SMB_ACL_TYPE_DEFAULT)) {
240 DEBUG(10, ("invalid smb acl type given (%d).\n", type));
243 DEBUGADD(10, ("setting %s acl\n",
244 ((type == SMB_ACL_TYPE_ACCESS) ? "access" : "default")));
246 if(!smb_acl_to_hpux_acl(theacl, &hpux_acl, &count, type)) {
247 DEBUG(10, ("conversion smb_acl -> hpux_acl failed (%s).\n",
253 * We can directly use SMB_VFS_STAT here, as if this was a
254 * POSIX call on a symlink, we've already refused it.
255 * For a Windows acl mapped call on a symlink, we want to follow
258 ret = SMB_VFS_STAT(handle->conn, smb_fname);
260 DEBUG(10, ("Error in stat call: %s\n", strerror(errno)));
263 if (S_ISDIR(smb_fname->st.st_ex_mode)) {
265 * if the file is a directory, there is extra work to do:
266 * since the hpux acl call stores both the access acl and
267 * the default acl as provided, we have to get the acl part
268 * that has _not_ been specified in "type" from the file first
269 * and concatenate it with the acl provided.
271 HPUX_ACL_T other_acl;
273 SMB_ACL_TYPE_T other_type;
275 other_type = (type == SMB_ACL_TYPE_ACCESS)
276 ? SMB_ACL_TYPE_DEFAULT
277 : SMB_ACL_TYPE_ACCESS;
278 DEBUGADD(10, ("getting acl from filesystem\n"));
279 if (!hpux_acl_get_file(smb_fname->base_name, &other_acl,
281 DEBUG(10, ("error getting acl from directory\n"));
284 DEBUG(10, ("adding %s part of fs acl to given acl\n",
285 ((other_type == SMB_ACL_TYPE_ACCESS)
288 if (!hpux_add_to_acl(&hpux_acl, &count, other_acl,
289 other_count, other_type))
291 DEBUG(10, ("error adding other acl.\n"));
292 SAFE_FREE(other_acl);
295 SAFE_FREE(other_acl);
297 else if (type != SMB_ACL_TYPE_ACCESS) {
302 if (!hpux_acl_sort(hpux_acl, count)) {
303 DEBUG(10, ("resulting acl is not valid!\n"));
306 DEBUG(10, ("resulting acl is valid.\n"));
308 ret = acl(discard_const_p(char, smb_fname->base_name), ACL_SET, count,
311 DEBUG(0, ("ERROR calling acl: %s\n", strerror(errno)));
315 DEBUG(10, ("hpuxacl_sys_acl_set_file %s.\n",
316 ((ret != 0) ? "failed" : "succeeded")));
317 TALLOC_FREE(smb_fname);
323 * set the access ACL on the file referred to by a fd
325 int hpuxacl_sys_acl_set_fd(vfs_handle_struct *handle,
330 * HPUX doesn't have the facl call. Fake it using the path.... JRA.
333 * We know we're in the same conn context. So we
334 * can use the relative path.
336 DEBUG(10, ("redirecting call of hpuxacl_sys_acl_set_fd to "
337 "hpuxacl_sys_acl_set_file (no facl syscall on HPUX)\n"));
339 return hpuxacl_sys_acl_set_file(handle,
340 fsp->fsp_name->base_name,
341 SMB_ACL_TYPE_ACCESS, theacl);
346 * delete the default ACL of a directory
348 * This is achieved by fetching the access ACL and rewriting it
349 * directly, via the hpux system call: the ACL_SET call on
350 * directories writes both the access and the default ACL as provided.
352 * XXX: posix acl_delete_def_file returns an error if
353 * the file referred to by path is not a directory.
354 * this function does not complain but the actions
355 * have no effect on a file other than a directory.
356 * But sys_acl_delete_default_file is only called in
357 * smbd/posixacls.c after having checked that the file
358 * is a directory, anyways. So implementing the extra
359 * check is considered unnecessary. --- Agreed? XXX
361 int hpuxacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
362 const struct smb_filename *smb_fname)
369 DEBUG(10, ("entering hpuxacl_sys_acl_delete_def_file.\n"));
371 smb_acl = hpuxacl_sys_acl_get_file(handle, smb_fname->base_name,
372 SMB_ACL_TYPE_ACCESS);
373 if (smb_acl == NULL) {
374 DEBUG(10, ("getting file acl failed!\n"));
377 if (!smb_acl_to_hpux_acl(smb_acl, &hpux_acl, &count,
378 SMB_ACL_TYPE_ACCESS))
380 DEBUG(10, ("conversion smb_acl -> hpux_acl failed.\n"));
383 if (!hpux_acl_sort(hpux_acl, count)) {
384 DEBUG(10, ("resulting acl is not valid!\n"));
387 ret = acl(discard_const_p(char, smb_fname->base_name),
388 ACL_SET, count, hpux_acl);
390 DEBUG(10, ("settinge file acl failed!\n"));
394 DEBUG(10, ("hpuxacl_sys_acl_delete_def_file %s.\n",
395 ((ret != 0) ? "failed" : "succeeded" )));
396 TALLOC_FREE(smb_acl);
401 * delete the default ACL of a directory
403 * This is achieved by fetching the access ACL and rewriting it
404 * directly, via the hpux system call: the ACL_SET call on
405 * directories writes both the access and the default ACL as provided.
407 * XXX: posix acl_delete_def_file returns an error if
408 * the file referred to by path is not a directory.
409 * this function does not complain but the actions
410 * have no effect on a file other than a directory.
411 * But sys_acl_delete_default_file is only called in
412 * smbd/posixacls.c after having checked that the file
413 * is a directory, anyways. So implementing the extra
414 * check is considered unnecessary. --- Agreed? XXX
416 int hpuxacl_sys_acl_delete_def_fd(vfs_handle_struct *handle,
424 DBG_DEBUG("entering hpuxacl_sys_acl_delete_def_fd.\n");
426 smb_acl = hpuxacl_sys_acl_get_file(handle, fsp->fsp_name->base_name,
427 SMB_ACL_TYPE_ACCESS);
428 if (smb_acl == NULL) {
429 DBG_DEBUG("getting file acl failed!\n");
432 if (!smb_acl_to_hpux_acl(smb_acl, &hpux_acl, &count,
433 SMB_ACL_TYPE_ACCESS))
435 DBG_DEBUG("conversion smb_acl -> hpux_acl failed.\n");
438 if (!hpux_acl_sort(hpux_acl, count)) {
439 DBG_DEBUG("resulting acl is not valid!\n");
442 ret = acl(discard_const_p(char, fsp->fsp_name->base_name),
443 ACL_SET, count, hpux_acl);
445 DBG_DEBUG("settinge file acl failed!\n");
449 DBG_DEBUG("hpuxacl_sys_acl_delete_def_fd %s.\n",
450 ((ret != 0) ? "failed" : "succeeded" ));
451 TALLOC_FREE(smb_acl);
459 static HPUX_ACL_T hpux_acl_init(int count)
461 HPUX_ACL_T hpux_acl =
462 (HPUX_ACL_T)SMB_MALLOC(sizeof(HPUX_ACE_T) * count);
463 if (hpux_acl == NULL) {
470 * Convert the SMB acl to the ACCESS or DEFAULT part of a
471 * hpux ACL, as desired.
473 static bool smb_acl_to_hpux_acl(SMB_ACL_T smb_acl,
474 HPUX_ACL_T *hpux_acl, int *count,
479 int check_which, check_rc;
481 DEBUG(10, ("entering smb_acl_to_hpux_acl\n"));
486 for (i = 0; i < smb_acl->count; i++) {
487 const struct smb_acl_entry *smb_entry = &(smb_acl->acl[i]);
488 HPUX_ACE_T hpux_entry;
490 ZERO_STRUCT(hpux_entry);
492 hpux_entry.a_type = smb_tag_to_hpux_tag(smb_entry->a_type);
493 if (hpux_entry.a_type == 0) {
494 DEBUG(10, ("smb_tag to hpux_tag failed\n"));
497 switch(hpux_entry.a_type) {
499 DEBUG(10, ("got tag type USER with uid %d\n",
500 smb_entry->info.user.uid));
501 hpux_entry.a_id = (uid_t)smb_entry->info.user.uid;
504 DEBUG(10, ("got tag type GROUP with gid %d\n",
505 smb_entry->info.group.gid));
506 hpux_entry.a_id = (uid_t)smb_entry->info.group.gid;
511 if (type == SMB_ACL_TYPE_DEFAULT) {
512 DEBUG(10, ("adding default bit to hpux ace\n"));
513 hpux_entry.a_type |= ACL_DEFAULT;
517 smb_perm_to_hpux_perm(smb_entry->a_perm);
518 DEBUG(10, ("assembled the following hpux ace:\n"));
519 DEBUGADD(10, (" - type: 0x%04x\n", hpux_entry.a_type));
520 DEBUGADD(10, (" - id: %d\n", hpux_entry.a_id));
521 DEBUGADD(10, (" - perm: o%o\n", hpux_entry.a_perm));
522 if (!hpux_add_to_acl(hpux_acl, count, &hpux_entry,
525 DEBUG(10, ("error adding acl entry\n"));
528 DEBUG(10, ("count after adding: %d (i: %d)\n", *count, i));
529 DEBUG(10, ("test, if entry has been copied into acl:\n"));
530 DEBUGADD(10, (" - type: 0x%04x\n",
531 (*hpux_acl)[(*count)-1].a_type));
532 DEBUGADD(10, (" - id: %d\n",
533 (*hpux_acl)[(*count)-1].a_id));
534 DEBUGADD(10, (" - perm: o%o\n",
535 (*hpux_acl)[(*count)-1].a_perm));
542 SAFE_FREE(*hpux_acl);
544 DEBUG(10, ("smb_acl_to_hpux_acl %s\n",
545 ((ret == True) ? "succeeded" : "failed")));
550 * convert either the access or the default part of a
551 * soaris acl to the SMB_ACL format.
553 static SMB_ACL_T hpux_acl_to_smb_acl(HPUX_ACL_T hpux_acl, int count,
554 SMB_ACL_TYPE_T type, TALLOC_CTX *mem_ctx)
559 if ((result = sys_acl_init(mem_ctx)) == NULL) {
560 DEBUG(10, ("error allocating memory for SMB_ACL\n"));
563 for (i = 0; i < count; i++) {
564 SMB_ACL_ENTRY_T smb_entry;
565 SMB_ACL_PERM_T smb_perm;
567 if (!_IS_OF_TYPE(hpux_acl[i], type)) {
570 result->acl = talloc_realloc(result, result->acl, struct smb_acl_entry, result->count + 1);
571 if (result->acl == NULL) {
572 DEBUG(10, ("error reallocating memory for SMB_ACL\n"));
575 smb_entry = &result->acl[result->count];
576 if (sys_acl_set_tag_type(smb_entry,
577 hpux_tag_to_smb_tag(hpux_acl[i].a_type)) != 0)
579 DEBUG(10, ("invalid tag type given: 0x%04x\n",
580 hpux_acl[i].a_type));
583 /* intentionally not checking return code here: */
584 sys_acl_set_qualifier(smb_entry, (void *)&hpux_acl[i].a_id);
585 smb_perm = hpux_perm_to_smb_perm(hpux_acl[i].a_perm);
586 if (sys_acl_set_permset(smb_entry, &smb_perm) != 0) {
587 DEBUG(10, ("invalid permset given: %d\n",
588 hpux_acl[i].a_perm));
597 DEBUG(10, ("hpux_acl_to_smb_acl %s\n",
598 ((result == NULL) ? "failed" : "succeeded")));
604 static HPUX_ACL_TAG_T smb_tag_to_hpux_tag(SMB_ACL_TAG_T smb_tag)
606 HPUX_ACL_TAG_T hpux_tag = 0;
608 DEBUG(10, ("smb_tag_to_hpux_tag\n"));
609 DEBUGADD(10, (" --> got smb tag 0x%04x\n", smb_tag));
615 case SMB_ACL_USER_OBJ:
621 case SMB_ACL_GROUP_OBJ:
622 hpux_tag = GROUP_OBJ;
625 hpux_tag = OTHER_OBJ;
628 hpux_tag = CLASS_OBJ;
631 DEBUGADD(10, (" !!! unknown smb tag type 0x%04x\n", smb_tag));
635 DEBUGADD(10, (" --> determined hpux tag 0x%04x\n", hpux_tag));
640 static SMB_ACL_TAG_T hpux_tag_to_smb_tag(HPUX_ACL_TAG_T hpux_tag)
642 SMB_ACL_TAG_T smb_tag = 0;
644 DEBUG(10, ("hpux_tag_to_smb_tag:\n"));
645 DEBUGADD(10, (" --> got hpux tag 0x%04x\n", hpux_tag));
647 hpux_tag &= ~ACL_DEFAULT;
651 smb_tag = SMB_ACL_USER;
654 smb_tag = SMB_ACL_USER_OBJ;
657 smb_tag = SMB_ACL_GROUP;
660 smb_tag = SMB_ACL_GROUP_OBJ;
663 smb_tag = SMB_ACL_OTHER;
666 smb_tag = SMB_ACL_MASK;
669 DEBUGADD(10, (" !!! unknown hpux tag type: 0x%04x\n",
674 DEBUGADD(10, (" --> determined smb tag 0x%04x\n", smb_tag));
681 * The permission bits used in the following two permission conversion
682 * functions are same, but the functions make us independent of the concrete
683 * permission data types.
685 static SMB_ACL_PERM_T hpux_perm_to_smb_perm(const HPUX_PERM_T perm)
687 SMB_ACL_PERM_T smb_perm = 0;
688 smb_perm |= ((perm & SMB_ACL_READ) ? SMB_ACL_READ : 0);
689 smb_perm |= ((perm & SMB_ACL_WRITE) ? SMB_ACL_WRITE : 0);
690 smb_perm |= ((perm & SMB_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
695 static HPUX_PERM_T smb_perm_to_hpux_perm(const SMB_ACL_PERM_T perm)
697 HPUX_PERM_T hpux_perm = 0;
698 hpux_perm |= ((perm & SMB_ACL_READ) ? SMB_ACL_READ : 0);
699 hpux_perm |= ((perm & SMB_ACL_WRITE) ? SMB_ACL_WRITE : 0);
700 hpux_perm |= ((perm & SMB_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
705 static bool hpux_acl_get_file(const char *name, HPUX_ACL_T *hpux_acl,
709 static HPUX_ACE_T dummy_ace;
711 DEBUG(10, ("hpux_acl_get_file called for file '%s'\n", name));
714 * The original code tries some INITIAL_ACL_SIZE
715 * and only did the ACL_CNT call upon failure
716 * (for performance reasons).
717 * For the sake of simplicity, I skip this for now.
719 * NOTE: There is a catch here on HP-UX: acl with cmd parameter
720 * ACL_CNT fails with errno EINVAL when called with a NULL
721 * pointer as last argument. So we need to use a dummy acl
722 * struct here (we make it static so it does not need to be
723 * instantiated or malloced each time this function is
724 * called). Btw: the count parameter does not seem to matter...
726 *count = acl(discard_const_p(char, name), ACL_CNT, 0, &dummy_ace);
728 DEBUG(10, ("acl ACL_CNT failed: %s\n", strerror(errno)));
731 *hpux_acl = hpux_acl_init(*count);
732 if (*hpux_acl == NULL) {
733 DEBUG(10, ("error allocating memory for hpux acl...\n"));
736 *count = acl(discard_const_p(char, name), ACL_GET, *count, *hpux_acl);
738 DEBUG(10, ("acl ACL_GET failed: %s\n", strerror(errno)));
744 DEBUG(10, ("hpux_acl_get_file %s.\n",
745 ((result == True) ? "succeeded" : "failed" )));
753 * Add entries to a hpux ACL.
755 * Entries are directly added to the hpuxacl parameter.
756 * if memory allocation fails, this may result in hpuxacl
757 * being NULL. if the resulting acl is to be checked and is
758 * not valid, it is kept in hpuxacl but False is returned.
760 * The type of ACEs (access/default) to be added to the ACL can
761 * be selected via the type parameter.
762 * I use the SMB_ACL_TYPE_T type here. Since SMB_ACL_TYPE_ACCESS
763 * is defined as "0", this means that one can only add either
764 * access or default ACEs from the given ACL, not both at the same
765 * time. If it should become necessary to add all of an ACL, one
766 * would have to replace this parameter by another type.
768 static bool hpux_add_to_acl(HPUX_ACL_T *hpux_acl, int *count,
769 HPUX_ACL_T add_acl, int add_count,
774 if ((type != SMB_ACL_TYPE_ACCESS) && (type != SMB_ACL_TYPE_DEFAULT))
776 DEBUG(10, ("invalid acl type given: %d\n", type));
780 for (i = 0; i < add_count; i++) {
781 if (!_IS_OF_TYPE(add_acl[i], type)) {
784 ADD_TO_ARRAY(NULL, HPUX_ACE_T, add_acl[i],
786 if (hpux_acl == NULL) {
787 DEBUG(10, ("error enlarging acl.\n"));
797 * sort the ACL and check it for validity
799 * [original comment from lib/sysacls.c:]
801 * if it's a minimal ACL with only 4 entries then we
802 * need to recalculate the mask permissions to make
803 * sure that they are the same as the GROUP_OBJ
804 * permissions as required by the UnixWare acl() system call.
806 * (note: since POSIX allows minimal ACLs which only contain
807 * 3 entries - ie there is no mask entry - we should, in theory,
808 * check for this and add a mask entry if necessary - however
809 * we "know" that the caller of this interface always specifies
810 * a mask, so in practice "this never happens" (tm) - if it *does*
811 * happen aclsort() will fail and return an error and someone will
814 static bool hpux_acl_sort(HPUX_ACL_T hpux_acl, int count)
816 int fixmask = (count <= 4);
818 if (hpux_internal_aclsort(count, fixmask, hpux_acl) != 0) {
827 * Helpers for hpux_internal_aclsort:
829 * - hpux_swap_acl_entries
830 * - hpux_prohibited_duplicate_type
831 * - hpux_get_needed_class_perm
835 * Counts the different number of objects in a given array of ACL
839 * acl_count - Count of ACLs in the array of ACL strucutres.
840 * aclp - Array of ACL structures.
841 * acl_type_count - Pointer to acl_types structure. Should already be
845 * acl_type_count - This structure is filled up with counts of various
849 static void hpux_count_obj(int acl_count, HPUX_ACL_T aclp, struct hpux_acl_types *acl_type_count)
853 memset(acl_type_count, 0, sizeof(struct hpux_acl_types));
855 for(i=0;i<acl_count;i++) {
856 switch(aclp[i].a_type) {
858 acl_type_count->n_user++;
861 acl_type_count->n_user_obj++;
864 acl_type_count->n_def_user_obj++;
867 acl_type_count->n_group++;
870 acl_type_count->n_group_obj++;
873 acl_type_count->n_def_group_obj++;
876 acl_type_count->n_other_obj++;
879 acl_type_count->n_def_other_obj++;
882 acl_type_count->n_class_obj++;
885 acl_type_count->n_def_class_obj++;
888 acl_type_count->n_def_user++;
891 acl_type_count->n_def_group++;
894 acl_type_count->n_illegal_obj++;
900 /* hpux_swap_acl_entries: Swaps two ACL entries.
902 * Inputs: aclp0, aclp1 - ACL entries to be swapped.
905 static void hpux_swap_acl_entries(HPUX_ACE_T *aclp0, HPUX_ACE_T *aclp1)
909 temp_acl.a_type = aclp0->a_type;
910 temp_acl.a_id = aclp0->a_id;
911 temp_acl.a_perm = aclp0->a_perm;
913 aclp0->a_type = aclp1->a_type;
914 aclp0->a_id = aclp1->a_id;
915 aclp0->a_perm = aclp1->a_perm;
917 aclp1->a_type = temp_acl.a_type;
918 aclp1->a_id = temp_acl.a_id;
919 aclp1->a_perm = temp_acl.a_perm;
922 /* hpux_prohibited_duplicate_type
923 * Identifies if given ACL type can have duplicate entries or
926 * Inputs: acl_type - ACL Type.
932 * True - If the ACL type matches any of the prohibited types.
933 * False - If the ACL type doesn't match any of the prohibited types.
936 static bool hpux_prohibited_duplicate_type(int acl_type)
949 /* hpux_get_needed_class_perm
950 * Returns the permissions of a ACL structure only if the ACL
951 * type matches one of the pre-determined types for computing
952 * CLASS_OBJ permissions.
954 * Inputs: aclp - Pointer to ACL structure.
957 static int hpux_get_needed_class_perm(struct acl *aclp)
959 switch(aclp->a_type) {
975 /* hpux_internal_aclsort: aclsort for HPUX.
977 * -> The aclsort() system call is available on the latest HPUX General
978 * -> Patch Bundles. So for HPUX, we developed our version of aclsort
979 * -> function. Because, we don't want to update to a new
980 * -> HPUX GR bundle just for aclsort() call.
982 * aclsort sorts the array of ACL structures as per the description in
983 * aclsort man page. Refer to aclsort man page for more details
987 * acl_count - Count of ACLs in the array of ACL structures.
988 * calclass - If this is not zero, then we compute the CLASS_OBJ
990 * aclp - Array of ACL structures.
994 * aclp - Sorted array of ACL structures.
998 * Returns 0 for success -1 for failure. Prints a message to the Samba
999 * debug log in case of failure.
1002 static int hpux_internal_aclsort(int acl_count, int calclass, HPUX_ACL_T aclp)
1004 struct hpux_acl_types acl_obj_count;
1005 int n_class_obj_perm = 0;
1008 DEBUG(10,("Entering hpux_internal_aclsort. (calclass = %d)\n", calclass));
1010 if (hpux_aclsort_call_present()) {
1011 DEBUG(10, ("calling hpux aclsort\n"));
1012 return aclsort(acl_count, calclass, aclp);
1015 DEBUG(10, ("using internal aclsort\n"));
1018 DEBUG(10,("Zero acl count passed. Returning Success\n"));
1023 DEBUG(0,("Null ACL pointer in hpux_acl_sort. Returning Failure. \n"));
1027 /* Count different types of ACLs in the ACLs array */
1029 hpux_count_obj(acl_count, aclp, &acl_obj_count);
1031 /* There should be only one entry each of type USER_OBJ, GROUP_OBJ,
1032 * CLASS_OBJ and OTHER_OBJ
1035 if ( (acl_obj_count.n_user_obj != 1) ||
1036 (acl_obj_count.n_group_obj != 1) ||
1037 (acl_obj_count.n_class_obj != 1) ||
1038 (acl_obj_count.n_other_obj != 1) )
1040 DEBUG(0,("hpux_internal_aclsort: More than one entry or no entries for \
1041 USER OBJ or GROUP_OBJ or OTHER_OBJ or CLASS_OBJ\n"));
1045 /* If any of the default objects are present, there should be only
1049 if ( (acl_obj_count.n_def_user_obj > 1) ||
1050 (acl_obj_count.n_def_group_obj > 1) ||
1051 (acl_obj_count.n_def_other_obj > 1) ||
1052 (acl_obj_count.n_def_class_obj > 1) )
1054 DEBUG(0,("hpux_internal_aclsort: More than one entry for DEF_CLASS_OBJ \
1055 or DEF_USER_OBJ or DEF_GROUP_OBJ or DEF_OTHER_OBJ\n"));
1059 /* We now have proper number of OBJ and DEF_OBJ entries. Now sort the acl
1062 * Sorting crieteria - First sort by ACL type. If there are multiple entries of
1063 * same ACL type, sort by ACL id.
1065 * I am using the trival kind of sorting method here because, performance isn't
1066 * really effected by the ACLs feature. More over there aren't going to be more
1067 * than 17 entries on HPUX.
1070 for(i=0; i<acl_count;i++) {
1071 for (j=i+1; j<acl_count; j++) {
1072 if( aclp[i].a_type > aclp[j].a_type ) {
1073 /* ACL entries out of order, swap them */
1074 hpux_swap_acl_entries((aclp+i), (aclp+j));
1075 } else if ( aclp[i].a_type == aclp[j].a_type ) {
1076 /* ACL entries of same type, sort by id */
1077 if(aclp[i].a_id > aclp[j].a_id) {
1078 hpux_swap_acl_entries((aclp+i), (aclp+j));
1079 } else if (aclp[i].a_id == aclp[j].a_id) {
1080 /* We have a duplicate entry. */
1081 if(hpux_prohibited_duplicate_type(aclp[i].a_type)) {
1082 DEBUG(0, ("hpux_internal_aclsort: Duplicate entry: Type(hex): %x Id: %d\n",
1083 aclp[i].a_type, aclp[i].a_id));
1091 /* set the class obj permissions to the computed one. */
1093 int n_class_obj_index = -1;
1095 for(i=0;i<acl_count;i++) {
1096 n_class_obj_perm |= hpux_get_needed_class_perm((aclp+i));
1098 if(aclp[i].a_type == CLASS_OBJ)
1099 n_class_obj_index = i;
1101 aclp[n_class_obj_index].a_perm = n_class_obj_perm;
1109 * hpux_acl_call_present:
1111 * This checks if the POSIX ACL system call is defined
1112 * which basically corresponds to whether JFS 3.3 or
1113 * higher is installed. If acl() was called when it
1114 * isn't defined, it causes the process to core dump
1115 * so it is important to check this and avoid acl()
1116 * calls if it isn't there.
1119 static bool hpux_acl_call_present(void)
1122 shl_t handle = NULL;
1125 static bool already_checked = False;
1132 ret_val = shl_findsym(&handle, "acl", TYPE_PROCEDURE, &value);
1135 DEBUG(5, ("hpux_acl_call_present: shl_findsym() returned %d, errno = %d, error %s\n",
1136 ret_val, errno, strerror(errno)));
1137 DEBUG(5,("hpux_acl_call_present: acl() system call is not present. Check if you have JFS 3.3 and above?\n"));
1142 DEBUG(10,("hpux_acl_call_present: acl() system call is present. We have JFS 3.3 or above \n"));
1144 already_checked = True;
1149 * runtime check for presence of aclsort library call.
1150 * same code as for acl call. if there are more of these,
1151 * a dispatcher function could be handy...
1154 static bool hpux_aclsort_call_present(void)
1156 shl_t handle = NULL;
1159 static bool already_checked = False;
1161 if (already_checked) {
1166 ret_val = shl_findsym(&handle, "aclsort", TYPE_PROCEDURE, &value);
1168 DEBUG(5, ("hpux_aclsort_call_present: shl_findsym "
1169 "returned %d, errno = %d, error %s",
1170 ret_val, errno, strerror(errno)));
1171 DEBUG(5, ("hpux_aclsort_call_present: "
1172 "aclsort() function not available.\n"));
1175 DEBUG(10,("hpux_aclsort_call_present: aclsort() function present.\n"));
1176 already_checked = True;
1182 * acl check function:
1183 * unused at the moment but could be used to get more
1184 * concrete error messages for debugging...
1185 * (acl sort just says that the acl is invalid...)
1187 static bool hpux_acl_check(HPUX_ACL_T hpux_acl, int count)
1192 check_rc = aclcheck(hpux_acl, count, &check_which);
1193 if (check_rc != 0) {
1194 DEBUG(10, ("acl is not valid:\n"));
1195 DEBUGADD(10, (" - return code: %d\n", check_rc));
1196 DEBUGADD(10, (" - which: %d\n", check_which));
1197 if (check_which != -1) {
1198 DEBUGADD(10, (" - invalid entry:\n"));
1199 DEBUGADD(10, (" * type: %d:\n",
1200 hpux_acl[check_which].a_type));
1201 DEBUGADD(10, (" * id: %d\n",
1202 hpux_acl[check_which].a_id));
1203 DEBUGADD(10, (" * perm: 0o%o\n",
1204 hpux_acl[check_which].a_perm));
1212 /* VFS operations structure */
1214 static struct vfs_fn_pointers hpuxacl_fns = {
1215 .sys_acl_get_file_fn = hpuxacl_sys_acl_get_file,
1216 .sys_acl_get_fd_fn = hpuxacl_sys_acl_get_fd,
1217 .sys_acl_blob_get_file_fn = posix_sys_acl_blob_get_file,
1218 .sys_acl_blob_get_fd_fn = posix_sys_acl_blob_get_fd,
1219 .sys_acl_set_fd_fn = hpuxacl_sys_acl_set_fd,
1220 .sys_acl_delete_def_file_fn = hpuxacl_sys_acl_delete_def_file,
1221 .sys_acl_delete_def_fd_fn = hpuxacl_sys_acl_delete_def_fd,
1225 NTSTATUS vfs_hpuxacl_init(TALLOC_CTX *ctx)
1227 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "hpuxacl",