2 Unix SMB/CIFS implementation.
3 SMB NT Security Descriptor / Unix permission conversion.
4 Copyright (C) Jeremy Allison 1994-2000
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 2 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, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 /****************************************************************************
24 Data structures representing the internal ACE format.
25 ****************************************************************************/
27 enum ace_owner {UID_ACE, GID_ACE, WORLD_ACE};
28 enum ace_attribute {ALLOW_ACE, DENY_ACE}; /* Used for incoming NT ACLS. */
30 typedef union posix_id {
36 typedef struct canon_ace {
37 struct canon_ace *next, *prev;
39 mode_t perms; /* Only use S_I(R|W|X)USR mode bits here. */
41 enum ace_owner owner_type;
42 enum ace_attribute attr;
46 #define ALL_ACE_PERMS (S_IRUSR|S_IWUSR|S_IXUSR)
48 /****************************************************************************
49 Functions to manipulate the internal ACE format.
50 ****************************************************************************/
52 /****************************************************************************
53 Count a linked list of canonical ACE entries.
54 ****************************************************************************/
56 static size_t count_canon_ace_list( canon_ace *list_head )
61 for (ace = list_head; ace; ace = ace->next)
67 /****************************************************************************
68 Free a linked list of canonical ACE entries.
69 ****************************************************************************/
71 static void free_canon_ace_list( canon_ace *list_head )
74 canon_ace *old_head = list_head;
75 DLIST_REMOVE(list_head, list_head);
80 /****************************************************************************
81 Function to duplicate a canon_ace entry.
82 ****************************************************************************/
84 static canon_ace *dup_canon_ace( canon_ace *src_ace)
86 canon_ace *dst_ace = (canon_ace *)malloc(sizeof(canon_ace));
92 dst_ace->prev = dst_ace->next = NULL;
96 /****************************************************************************
97 Print out a canon ace.
98 ****************************************************************************/
100 static void print_canon_ace(canon_ace *pace, int num)
104 dbgtext( "canon_ace index %d. Type = %s ", num, pace->attr == ALLOW_ACE ? "allow" : "deny" );
105 dbgtext( "SID = %s ", sid_to_string( str, &pace->trustee));
106 if (pace->owner_type == UID_ACE) {
107 char *u_name = uidtoname(pace->unix_ug.uid);
108 dbgtext( "uid %u (%s) ", (unsigned int)pace->unix_ug.uid, u_name);
109 } else if (pace->owner_type == GID_ACE) {
110 char *g_name = gidtoname(pace->unix_ug.gid);
111 dbgtext( "gid %u (%s) ", (unsigned int)pace->unix_ug.gid, g_name);
114 switch (pace->type) {
116 dbgtext( "SMB_ACL_USER ");
118 case SMB_ACL_USER_OBJ:
119 dbgtext( "SMB_ACL_USER_OBJ ");
122 dbgtext( "SMB_ACL_GROUP ");
124 case SMB_ACL_GROUP_OBJ:
125 dbgtext( "SMB_ACL_GROUP_OBJ ");
128 dbgtext( "SMB_ACL_OTHER ");
132 dbgtext( "%c", pace->perms & S_IRUSR ? 'r' : '-');
133 dbgtext( "%c", pace->perms & S_IWUSR ? 'w' : '-');
134 dbgtext( "%c\n", pace->perms & S_IXUSR ? 'x' : '-');
137 /****************************************************************************
138 Print out a canon ace list.
139 ****************************************************************************/
141 static void print_canon_ace_list(const char *name, canon_ace *ace_list)
145 if( DEBUGLVL( 10 )) {
146 dbgtext( "print_canon_ace_list: %s\n", name );
147 for (;ace_list; ace_list = ace_list->next, count++)
148 print_canon_ace(ace_list, count );
152 /****************************************************************************
153 Map POSIX ACL perms to canon_ace permissions (a mode_t containing only S_(R|W|X)USR bits).
154 ****************************************************************************/
156 static mode_t convert_permset_to_mode_t(connection_struct *conn, SMB_ACL_PERMSET_T permset)
160 ret |= (conn->vfs_ops.sys_acl_get_perm(conn, permset, SMB_ACL_READ) ? S_IRUSR : 0);
161 ret |= (conn->vfs_ops.sys_acl_get_perm(conn, permset, SMB_ACL_WRITE) ? S_IWUSR : 0);
162 ret |= (conn->vfs_ops.sys_acl_get_perm(conn, permset, SMB_ACL_EXECUTE) ? S_IXUSR : 0);
167 /****************************************************************************
168 Map generic UNIX permissions to canon_ace permissions (a mode_t containing only S_(R|W|X)USR bits).
169 ****************************************************************************/
171 static mode_t unix_perms_to_acl_perms(mode_t mode, int r_mask, int w_mask, int x_mask)
185 /****************************************************************************
186 Map canon_ace permissions (a mode_t containing only S_(R|W|X)USR bits) to
187 an SMB_ACL_PERMSET_T.
188 ****************************************************************************/
190 static int map_acl_perms_to_permset(connection_struct *conn, mode_t mode, SMB_ACL_PERMSET_T *p_permset)
192 if (conn->vfs_ops.sys_acl_clear_perms(conn, *p_permset) == -1)
194 if (mode & S_IRUSR) {
195 if (conn->vfs_ops.sys_acl_add_perm(conn, *p_permset, SMB_ACL_READ) == -1)
198 if (mode & S_IWUSR) {
199 if (conn->vfs_ops.sys_acl_add_perm(conn, *p_permset, SMB_ACL_WRITE) == -1)
202 if (mode & S_IXUSR) {
203 if (conn->vfs_ops.sys_acl_add_perm(conn, *p_permset, SMB_ACL_EXECUTE) == -1)
208 /****************************************************************************
209 Function to create owner and group SIDs from a SMB_STRUCT_STAT.
210 ****************************************************************************/
212 static void create_file_sids(SMB_STRUCT_STAT *psbuf, DOM_SID *powner_sid, DOM_SID *pgroup_sid)
214 uid_to_sid( powner_sid, psbuf->st_uid );
215 gid_to_sid( pgroup_sid, psbuf->st_gid );
218 /****************************************************************************
219 Merge aces with a common sid - if both are allow or deny, OR the permissions together and
220 delete the second one. If the first is deny, mask the permissions off and delete the allow
221 if the permissions become zero, delete the deny if the permissions are non zero.
222 ****************************************************************************/
224 static void merge_aces( canon_ace **pp_list_head )
226 canon_ace *list_head = *pp_list_head;
227 canon_ace *curr_ace_outer;
228 canon_ace *curr_ace_outer_next;
231 * First, merge allow entries with identical SIDs, and deny entries
232 * with identical SIDs.
235 for (curr_ace_outer = list_head; curr_ace_outer; curr_ace_outer = curr_ace_outer_next) {
237 canon_ace *curr_ace_next;
239 curr_ace_outer_next = curr_ace_outer->next; /* Save the link in case we delete. */
241 for (curr_ace = curr_ace_outer->next; curr_ace; curr_ace = curr_ace_next) {
243 curr_ace_next = curr_ace->next; /* Save the link in case of delete. */
245 if (sid_equal(&curr_ace->trustee, &curr_ace_outer->trustee) &&
246 (curr_ace->attr == curr_ace_outer->attr)) {
248 if( DEBUGLVL( 10 )) {
249 dbgtext("merge_aces: Merging ACE's\n");
250 print_canon_ace( curr_ace_outer, 0);
251 print_canon_ace( curr_ace, 0);
254 /* Merge two allow or two deny ACE's. */
256 curr_ace_outer->perms |= curr_ace->perms;
257 DLIST_REMOVE(list_head, curr_ace);
259 curr_ace_outer_next = curr_ace_outer->next; /* We may have deleted the link. */
265 * Now go through and mask off allow permissions with deny permissions.
266 * We can delete either the allow or deny here as we know that each SID
267 * appears only once in the list.
270 for (curr_ace_outer = list_head; curr_ace_outer; curr_ace_outer = curr_ace_outer_next) {
272 canon_ace *curr_ace_next;
274 curr_ace_outer_next = curr_ace_outer->next; /* Save the link in case we delete. */
276 for (curr_ace = curr_ace_outer->next; curr_ace; curr_ace = curr_ace_next) {
278 curr_ace_next = curr_ace->next; /* Save the link in case of delete. */
281 * Subtract ACE's with different entries. Due to the ordering constraints
282 * we've put on the ACL, we know the deny must be the first one.
285 if (sid_equal(&curr_ace->trustee, &curr_ace_outer->trustee) &&
286 (curr_ace_outer->attr == DENY_ACE) && (curr_ace->attr == ALLOW_ACE)) {
288 if( DEBUGLVL( 10 )) {
289 dbgtext("merge_aces: Masking ACE's\n");
290 print_canon_ace( curr_ace_outer, 0);
291 print_canon_ace( curr_ace, 0);
294 curr_ace->perms &= ~curr_ace_outer->perms;
296 if (curr_ace->perms == 0) {
299 * The deny overrides the allow. Remove the allow.
302 DLIST_REMOVE(list_head, curr_ace);
304 curr_ace_outer_next = curr_ace_outer->next; /* We may have deleted the link. */
309 * Even after removing permissions, there
310 * are still allow permissions - delete the deny.
311 * It is safe to delete the deny here,
312 * as we are guarenteed by the deny first
313 * ordering that all the deny entries for
314 * this SID have already been merged into one
315 * before we can get to an allow ace.
318 DLIST_REMOVE(list_head, curr_ace_outer);
319 SAFE_FREE(curr_ace_outer);
324 } /* end for curr_ace */
325 } /* end for curr_ace_outer */
327 /* We may have modified the list. */
329 *pp_list_head = list_head;
332 /****************************************************************************
333 Map canon_ace perms to permission bits NT.
334 The attr element is not used here - we only process deny entries on set,
335 not get. Deny entries are implicit on get with ace->perms = 0.
336 ****************************************************************************/
338 static SEC_ACCESS map_canon_ace_perms(int *pacl_type, DOM_SID *powner_sid, canon_ace *ace)
343 *pacl_type = SEC_ACE_TYPE_ACCESS_ALLOWED;
345 if ((ace->perms & ALL_ACE_PERMS) == ALL_ACE_PERMS) {
346 nt_mask = UNIX_ACCESS_RWX;
347 } else if ((ace->perms & ALL_ACE_PERMS) == (mode_t)0) {
348 nt_mask = UNIX_ACCESS_NONE;
350 nt_mask |= ((ace->perms & S_IRUSR) ? UNIX_ACCESS_R : 0 );
351 nt_mask |= ((ace->perms & S_IWUSR) ? UNIX_ACCESS_W : 0 );
352 nt_mask |= ((ace->perms & S_IXUSR) ? UNIX_ACCESS_X : 0 );
355 DEBUG(10,("map_canon_ace_perms: Mapped (UNIX) %x to (NT) %x\n",
356 (unsigned int)ace->perms, (unsigned int)nt_mask ));
358 init_sec_access(&sa,nt_mask);
362 /****************************************************************************
363 Map NT perms to a UNIX mode_t.
364 ****************************************************************************/
366 #define FILE_SPECIFIC_READ_BITS (FILE_READ_DATA|FILE_READ_EA|FILE_READ_ATTRIBUTES)
367 #define FILE_SPECIFIC_WRITE_BITS (FILE_WRITE_DATA|FILE_APPEND_DATA|FILE_WRITE_EA|FILE_WRITE_ATTRIBUTES)
368 #define FILE_SPECIFIC_EXECUTE_BITS (FILE_EXECUTE)
370 static mode_t map_nt_perms( SEC_ACCESS sec_access, int type)
376 if(sec_access.mask & GENERIC_ALL_ACCESS)
377 mode = S_IRUSR|S_IWUSR|S_IXUSR;
379 mode |= (sec_access.mask & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IRUSR : 0;
380 mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWUSR : 0;
381 mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXUSR : 0;
385 if(sec_access.mask & GENERIC_ALL_ACCESS)
386 mode = S_IRGRP|S_IWGRP|S_IXGRP;
388 mode |= (sec_access.mask & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IRGRP : 0;
389 mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWGRP : 0;
390 mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXGRP : 0;
394 if(sec_access.mask & GENERIC_ALL_ACCESS)
395 mode = S_IROTH|S_IWOTH|S_IXOTH;
397 mode |= (sec_access.mask & (GENERIC_READ_ACCESS|FILE_SPECIFIC_READ_BITS)) ? S_IROTH : 0;
398 mode |= (sec_access.mask & (GENERIC_WRITE_ACCESS|FILE_SPECIFIC_WRITE_BITS)) ? S_IWOTH : 0;
399 mode |= (sec_access.mask & (GENERIC_EXECUTE_ACCESS|FILE_SPECIFIC_EXECUTE_BITS)) ? S_IXOTH : 0;
407 /****************************************************************************
408 Unpack a SEC_DESC into a UNIX owner and group.
409 ****************************************************************************/
411 static BOOL unpack_nt_owners(SMB_STRUCT_STAT *psbuf, uid_t *puser, gid_t *pgrp, uint32 security_info_sent, SEC_DESC *psd)
415 enum SID_NAME_USE sid_type;
420 if(security_info_sent == 0) {
421 DEBUG(0,("unpack_nt_owners: no security info sent !\n"));
426 * Validate the owner and group SID's.
429 memset(&owner_sid, '\0', sizeof(owner_sid));
430 memset(&grp_sid, '\0', sizeof(grp_sid));
432 DEBUG(5,("unpack_nt_owners: validating owner_sids.\n"));
435 * Don't immediately fail if the owner sid cannot be validated.
436 * This may be a group chown only set.
439 if (security_info_sent & OWNER_SECURITY_INFORMATION) {
440 sid_copy(&owner_sid, psd->owner_sid);
441 if (!sid_to_uid( &owner_sid, puser, &sid_type)) {
442 DEBUG(3,("unpack_nt_owners: unable to validate owner sid for %s\n",
443 sid_string_static(&owner_sid)));
449 * Don't immediately fail if the group sid cannot be validated.
450 * This may be an owner chown only set.
453 if (security_info_sent & GROUP_SECURITY_INFORMATION) {
454 sid_copy(&grp_sid, psd->grp_sid);
455 if (!sid_to_gid( &grp_sid, pgrp, &sid_type)) {
456 DEBUG(3,("unpack_nt_owners: unable to validate group sid.\n"));
461 DEBUG(5,("unpack_nt_owners: owner_sids validated.\n"));
466 /****************************************************************************
467 Ensure the enforced permissions for this share apply.
468 ****************************************************************************/
470 static mode_t apply_default_perms(files_struct *fsp, mode_t perms, mode_t type)
472 int snum = SNUM(fsp->conn);
473 mode_t and_bits = (mode_t)0;
474 mode_t or_bits = (mode_t)0;
476 /* Get the initial bits to apply. */
478 if (fsp->is_directory) {
479 and_bits = lp_dir_security_mask(snum);
480 or_bits = lp_force_dir_security_mode(snum);
482 and_bits = lp_security_mask(snum);
483 or_bits = lp_force_security_mode(snum);
486 /* Now bounce them into the S_USR space. */
489 and_bits = unix_perms_to_acl_perms(and_bits, S_IRUSR, S_IWUSR, S_IXUSR);
490 or_bits = unix_perms_to_acl_perms(or_bits, S_IRUSR, S_IWUSR, S_IXUSR);
493 and_bits = unix_perms_to_acl_perms(and_bits, S_IRGRP, S_IWGRP, S_IXGRP);
494 or_bits = unix_perms_to_acl_perms(or_bits, S_IRGRP, S_IWGRP, S_IXGRP);
497 and_bits = unix_perms_to_acl_perms(and_bits, S_IROTH, S_IWOTH, S_IXOTH);
498 or_bits = unix_perms_to_acl_perms(or_bits, S_IROTH, S_IWOTH, S_IXOTH);
502 return ((perms & and_bits)|or_bits);
505 /****************************************************************************
506 A well formed POSIX file or default ACL has at least 3 entries, a
507 SMB_ACL_USER_OBJ, SMB_ACL_GROUP_OBJ, SMB_ACL_OTHER_OBJ.
508 In addition, the owner must always have at least read access.
509 When using this call on get_acl, the pst struct is valid and contains
510 the mode of the file. When using this call on set_acl, the pst struct has
511 been modified to have a mode containing the default for this file or directory
513 ****************************************************************************/
515 static BOOL ensure_canon_entry_valid(canon_ace **pp_ace,
517 DOM_SID *pfile_owner_sid,
518 DOM_SID *pfile_grp_sid,
519 SMB_STRUCT_STAT *pst,
522 extern DOM_SID global_sid_World;
524 BOOL got_user = False;
525 BOOL got_grp = False;
526 BOOL got_other = False;
528 for (pace = *pp_ace; pace; pace = pace->next) {
529 if (pace->type == SMB_ACL_USER_OBJ) {
532 /* Ensure owner has read access. */
533 pace->perms |= S_IRUSR;
534 if (fsp->is_directory)
535 pace->perms |= (S_IWUSR|S_IXUSR);
538 * Ensure create mask/force create mode is respected on set.
541 pace->perms = apply_default_perms(fsp, pace->perms, S_IRUSR);
545 } else if (pace->type == SMB_ACL_GROUP_OBJ) {
548 * Ensure create mask/force create mode is respected on set.
552 pace->perms = apply_default_perms(fsp, pace->perms, S_IRGRP);
554 } else if (pace->type == SMB_ACL_OTHER) {
557 * Ensure create mask/force create mode is respected on set.
561 pace->perms = apply_default_perms(fsp, pace->perms, S_IROTH);
567 if ((pace = (canon_ace *)malloc(sizeof(canon_ace))) == NULL) {
568 DEBUG(0,("ensure_canon_entry_valid: malloc fail.\n"));
573 pace->type = SMB_ACL_USER_OBJ;
574 pace->owner_type = UID_ACE;
575 pace->unix_ug.uid = pst->st_uid;
576 pace->trustee = *pfile_owner_sid;
577 pace->perms = unix_perms_to_acl_perms(pst->st_mode, S_IRUSR, S_IWUSR, S_IXUSR);
578 pace->attr = ALLOW_ACE;
580 DLIST_ADD(*pp_ace, pace);
584 if ((pace = (canon_ace *)malloc(sizeof(canon_ace))) == NULL) {
585 DEBUG(0,("ensure_canon_entry_valid: malloc fail.\n"));
590 pace->type = SMB_ACL_GROUP_OBJ;
591 pace->owner_type = GID_ACE;
592 pace->unix_ug.uid = pst->st_gid;
593 pace->trustee = *pfile_grp_sid;
594 pace->perms = unix_perms_to_acl_perms(pst->st_mode, S_IRGRP, S_IWGRP, S_IXGRP);
595 pace->attr = ALLOW_ACE;
597 DLIST_ADD(*pp_ace, pace);
601 if ((pace = (canon_ace *)malloc(sizeof(canon_ace))) == NULL) {
602 DEBUG(0,("ensure_canon_entry_valid: malloc fail.\n"));
607 pace->type = SMB_ACL_OTHER;
608 pace->owner_type = WORLD_ACE;
609 pace->unix_ug.world = -1;
610 pace->trustee = global_sid_World;
611 pace->perms = unix_perms_to_acl_perms(pst->st_mode, S_IROTH, S_IWOTH, S_IXOTH);
612 pace->attr = ALLOW_ACE;
614 DLIST_ADD(*pp_ace, pace);
620 /****************************************************************************
621 Unpack a SEC_DESC into two canonical ace lists.
622 ****************************************************************************/
624 static BOOL create_canon_ace_lists(files_struct *fsp,
625 DOM_SID *pfile_owner_sid,
626 DOM_SID *pfile_grp_sid,
627 canon_ace **ppfile_ace, canon_ace **ppdir_ace,
630 extern DOM_SID global_sid_World;
631 extern struct generic_mapping file_generic_mapping;
632 BOOL all_aces_are_inherit_only = (fsp->is_directory ? True : False);
633 canon_ace *file_ace = NULL;
634 canon_ace *dir_ace = NULL;
635 canon_ace *tmp_ace = NULL;
636 canon_ace *current_ace = NULL;
637 BOOL got_dir_allow = False;
638 BOOL got_file_allow = False;
645 * Convert the incoming ACL into a more regular form.
648 for(i = 0; i < dacl->num_aces; i++) {
649 SEC_ACE *psa = &dacl->ace[i];
651 if((psa->type != SEC_ACE_TYPE_ACCESS_ALLOWED) && (psa->type != SEC_ACE_TYPE_ACCESS_DENIED)) {
652 DEBUG(3,("create_canon_ace_lists: unable to set anything but an ALLOW or DENY ACE.\n"));
657 * The security mask may be UNIX_ACCESS_NONE which should map into
658 * no permissions (we overload the WRITE_OWNER bit for this) or it
659 * should be one of the ALL/EXECUTE/READ/WRITE bits. Arrange for this
660 * to be so. Any other bits override the UNIX_ACCESS_NONE bit.
664 * Convert GENERIC bits to specific bits.
667 se_map_generic(&psa->info.mask, &file_generic_mapping);
669 psa->info.mask &= (UNIX_ACCESS_NONE|FILE_ALL_ACCESS);
671 if(psa->info.mask != UNIX_ACCESS_NONE)
672 psa->info.mask &= ~UNIX_ACCESS_NONE;
676 * Deal with the fact that NT 4.x re-writes the canonical format
677 * that we return for default ACLs. If a directory ACE is identical
678 * to a inherited directory ACE then NT changes the bits so that the
679 * first ACE is set to OI|IO and the second ACE for this SID is set
680 * to CI. We need to repair this. JRA.
683 for(i = 0; i < dacl->num_aces; i++) {
684 SEC_ACE *psa1 = &dacl->ace[i];
686 for (j = i + 1; j < dacl->num_aces; j++) {
687 SEC_ACE *psa2 = &dacl->ace[j];
689 if (psa1->info.mask != psa2->info.mask)
692 if (!sid_equal(&psa1->trustee, &psa2->trustee))
696 * Ok - permission bits and SIDs are equal.
697 * Check if flags were re-written.
700 if (psa1->flags & SEC_ACE_FLAG_INHERIT_ONLY) {
702 psa1->flags |= (psa2->flags & (SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT));
703 psa2->flags &= ~(SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT);
705 } else if (psa2->flags & SEC_ACE_FLAG_INHERIT_ONLY) {
707 psa2->flags |= (psa1->flags & (SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT));
708 psa1->flags &= ~(SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_OBJECT_INHERIT);
714 for(i = 0; i < dacl->num_aces; i++) {
715 enum SID_NAME_USE sid_type;
716 SEC_ACE *psa = &dacl->ace[i];
719 * Ignore non-mappable SIDs (NT Authority, BUILTIN etc).
722 if (non_mappable_sid(&psa->trustee)) {
724 DEBUG(10,("create_canon_ace_lists: ignoring non-mappable SID %s\n",
725 sid_to_string(str, &psa->trustee) ));
730 * Create a cannon_ace entry representing this NT DACL ACE.
733 if ((current_ace = (canon_ace *)malloc(sizeof(canon_ace))) == NULL) {
734 free_canon_ace_list(file_ace);
735 free_canon_ace_list(dir_ace);
736 DEBUG(0,("create_canon_ace_lists: malloc fail.\n"));
740 ZERO_STRUCTP(current_ace);
742 sid_copy(¤t_ace->trustee, &psa->trustee);
745 * Try and work out if the SID is a user or group
746 * as we need to flag these differently for POSIX.
749 if( sid_equal(¤t_ace->trustee, &global_sid_World)) {
750 current_ace->owner_type = WORLD_ACE;
751 current_ace->unix_ug.world = -1;
752 } else if (sid_to_uid( ¤t_ace->trustee, ¤t_ace->unix_ug.uid, &sid_type)) {
753 current_ace->owner_type = UID_ACE;
754 } else if (sid_to_gid( ¤t_ace->trustee, ¤t_ace->unix_ug.gid, &sid_type)) {
755 current_ace->owner_type = GID_ACE;
759 free_canon_ace_list(file_ace);
760 free_canon_ace_list(dir_ace);
761 DEBUG(0,("create_canon_ace_lists: unable to map SID %s to uid or gid.\n",
762 sid_to_string(str, ¤t_ace->trustee) ));
763 SAFE_FREE(current_ace);
768 * Map the given NT permissions into a UNIX mode_t containing only
769 * S_I(R|W|X)USR bits.
772 current_ace->perms |= map_nt_perms( psa->info, S_IRUSR);
773 current_ace->attr = (psa->type == SEC_ACE_TYPE_ACCESS_ALLOWED) ? ALLOW_ACE : DENY_ACE;
776 * Now note what kind of a POSIX ACL this should map to.
779 if(sid_equal(¤t_ace->trustee, pfile_owner_sid)) {
781 current_ace->type = SMB_ACL_USER_OBJ;
783 } else if( sid_equal(¤t_ace->trustee, pfile_grp_sid)) {
785 current_ace->type = SMB_ACL_GROUP_OBJ;
787 } else if( sid_equal(¤t_ace->trustee, &global_sid_World)) {
789 current_ace->type = SMB_ACL_OTHER;
793 * Could be a SMB_ACL_USER or SMB_ACL_GROUP. Check by
794 * looking at owner_type.
797 current_ace->type = (current_ace->owner_type == UID_ACE) ? SMB_ACL_USER : SMB_ACL_GROUP;
801 * Now add the created ace to either the file list, the directory
802 * list, or both. We *MUST* preserve the order here (hence we use
803 * DLIST_ADD_END) as NT ACLs are order dependent.
806 if (fsp->is_directory) {
809 * We can only add to the default POSIX ACE list if the ACE is
810 * designed to be inherited by both files and directories.
813 if ((psa->flags & (SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT)) ==
814 (SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT)) {
816 DLIST_ADD_END(dir_ace, current_ace, tmp_ace);
819 * Note if this was an allow ace. We can't process
820 * any further deny ace's after this.
823 if (current_ace->attr == ALLOW_ACE)
824 got_dir_allow = True;
826 if ((current_ace->attr == DENY_ACE) && got_dir_allow) {
827 DEBUG(0,("create_canon_ace_lists: malformed ACL in inheritable ACL ! \
828 Deny entry after Allow entry. Failing to set on file %s.\n", fsp->fsp_name ));
829 free_canon_ace_list(file_ace);
830 free_canon_ace_list(dir_ace);
831 SAFE_FREE(current_ace);
835 if( DEBUGLVL( 10 )) {
836 dbgtext("create_canon_ace_lists: adding dir ACL:\n");
837 print_canon_ace( current_ace, 0);
841 * If this is not an inherit only ACE we need to add a duplicate
845 if (!(psa->flags & SEC_ACE_FLAG_INHERIT_ONLY)) {
846 canon_ace *dup_ace = dup_canon_ace(current_ace);
849 DEBUG(0,("create_canon_ace_lists: malloc fail !\n"));
850 free_canon_ace_list(file_ace);
851 free_canon_ace_list(dir_ace);
855 current_ace = dup_ace;
863 * Only add to the file ACL if not inherit only.
866 if (!(psa->flags & SEC_ACE_FLAG_INHERIT_ONLY)) {
867 DLIST_ADD_END(file_ace, current_ace, tmp_ace);
870 * Note if this was an allow ace. We can't process
871 * any further deny ace's after this.
874 if (current_ace->attr == ALLOW_ACE)
875 got_file_allow = True;
877 if ((current_ace->attr == DENY_ACE) && got_file_allow) {
878 DEBUG(0,("create_canon_ace_lists: malformed ACL in file ACL ! \
879 Deny entry after Allow entry. Failing to set on file %s.\n", fsp->fsp_name ));
880 free_canon_ace_list(file_ace);
881 free_canon_ace_list(dir_ace);
882 SAFE_FREE(current_ace);
886 if( DEBUGLVL( 10 )) {
887 dbgtext("create_canon_ace_lists: adding file ACL:\n");
888 print_canon_ace( current_ace, 0);
890 all_aces_are_inherit_only = False;
895 * Free if ACE was not added.
898 SAFE_FREE(current_ace);
901 if (fsp->is_directory && all_aces_are_inherit_only) {
903 * Windows 2000 is doing one of these weird 'inherit acl'
904 * traverses to conserve NTFS ACL resources. Just pretend
905 * there was no DACL sent. JRA.
908 DEBUG(10,("create_canon_ace_lists: Win2k inherit acl traverse. Ignoring DACL.\n"));
909 free_canon_ace_list(file_ace);
910 free_canon_ace_list(dir_ace);
915 *ppfile_ace = file_ace;
916 *ppdir_ace = dir_ace;
921 /****************************************************************************
922 Check if a given uid/SID is in a group gid/SID. This is probably very
923 expensive and will need optimisation. A *lot* of optimisation :-). JRA.
924 ****************************************************************************/
926 static BOOL uid_entry_in_group( canon_ace *uid_ace, canon_ace *group_ace )
928 extern DOM_SID global_sid_World;
932 /* "Everyone" always matches every uid. */
934 if (sid_equal(&group_ace->trustee, &global_sid_World))
937 fstrcpy(u_name, uidtoname(uid_ace->unix_ug.uid));
938 fstrcpy(g_name, gidtoname(group_ace->unix_ug.gid));
941 * Due to the winbind interfaces we need to do this via names,
945 return user_in_group_list(u_name, g_name );
948 /****************************************************************************
949 ASCII art time again... JRA :-).
951 We have 3 cases to process when moving from an NT ACL to a POSIX ACL. Firstly,
952 we insist the ACL is in canonical form (ie. all DENY entries preceede ALLOW
953 entries). Secondly, the merge code has ensured that all duplicate SID entries for
954 allow or deny have been merged, so the same SID can only appear once in the deny
955 list or once in the allow list.
957 We then process as follows :
959 ---------------------------------------------------------------------------
960 First pass - look for a Everyone DENY entry.
962 If it is deny all (rwx) trunate the list at this point.
963 Else, walk the list from this point and use the deny permissions of this
964 entry as a mask on all following allow entries. Finally, delete
965 the Everyone DENY entry (we have applied it to everything possible).
967 In addition, in this pass we remove any DENY entries that have
968 no permissions (ie. they are a DENY nothing).
969 ---------------------------------------------------------------------------
970 Second pass - only deal with deny user entries.
972 DENY user1 (perms XXX)
975 for all following allow group entries where user1 is in group
976 new_perms |= group_perms;
978 user1 entry perms = new_perms & ~ XXX;
980 Convert the deny entry to an allow entry with the new perms and
981 push to the end of the list. Note if the user was in no groups
982 this maps to a specific allow nothing entry for this user.
984 The common case from the NT ACL choser (userX deny all) is
985 optimised so we don't do the group lookup - we just map to
986 an allow nothing entry.
988 What we're doing here is inferring the allow permissions the
989 person setting the ACE on user1 wanted by looking at the allow
990 permissions on the groups the user is currently in. This will
991 be a snapshot, depending on group membership but is the best
992 we can do and has the advantage of failing closed rather than
994 ---------------------------------------------------------------------------
995 Third pass - only deal with deny group entries.
997 DENY group1 (perms XXX)
999 for all following allow user entries where user is in group1
1000 user entry perms = user entry perms & ~ XXX;
1002 If there is a group Everyone allow entry with permissions YYY,
1003 convert the group1 entry to an allow entry and modify its
1006 new_perms = YYY & ~ XXX
1008 and push to the end of the list.
1010 If there is no group Everyone allow entry then convert the
1011 group1 entry to a allow nothing entry and push to the end of the list.
1013 Note that the common case from the NT ACL choser (groupX deny all)
1014 cannot be optimised here as we need to modify user entries who are
1015 in the group to change them to a deny all also.
1017 What we're doing here is modifying the allow permissions of
1018 user entries (which are more specific in POSIX ACLs) to mask
1019 out the explicit deny set on the group they are in. This will
1020 be a snapshot depending on current group membership but is the
1021 best we can do and has the advantage of failing closed rather
1023 ---------------------------------------------------------------------------
1025 Note we *MUST* do the deny user pass first as this will convert deny user
1026 entries into allow user entries which can then be processed by the deny
1029 The above algorithm took a *lot* of thinking about - hence this
1030 explaination :-). JRA.
1031 ****************************************************************************/
1033 /****************************************************************************
1034 Process a canon_ace list entries. This is very complex code. We need
1035 to go through and remove the "deny" permissions from any allow entry that matches
1036 the id of this entry. We have already refused any NT ACL that wasn't in correct
1037 order (DENY followed by ALLOW). If any allow entry ends up with zero permissions,
1038 we just remove it (to fail safe). We have already removed any duplicate ace
1039 entries. Treat an "Everyone" DENY_ACE as a special case - use it to mask all
1041 ****************************************************************************/
1043 static void process_deny_list( canon_ace **pp_ace_list )
1045 extern DOM_SID global_sid_World;
1046 canon_ace *ace_list = *pp_ace_list;
1047 canon_ace *curr_ace = NULL;
1048 canon_ace *curr_ace_next = NULL;
1050 /* Pass 1 above - look for an Everyone, deny entry. */
1052 for (curr_ace = ace_list; curr_ace; curr_ace = curr_ace_next) {
1053 canon_ace *allow_ace_p;
1055 curr_ace_next = curr_ace->next; /* So we can't lose the link. */
1057 if (curr_ace->attr != DENY_ACE)
1060 if (curr_ace->perms == (mode_t)0) {
1062 /* Deny nothing entry - delete. */
1064 DLIST_REMOVE(ace_list, curr_ace);
1068 if (!sid_equal(&curr_ace->trustee, &global_sid_World))
1071 /* JRATEST - assert. */
1072 SMB_ASSERT(curr_ace->owner_type == WORLD_ACE);
1074 if (curr_ace->perms == ALL_ACE_PERMS) {
1077 * Optimisation. This is a DENY_ALL to Everyone. Truncate the
1078 * list at this point including this entry.
1081 canon_ace *prev_entry = curr_ace->prev;
1083 free_canon_ace_list( curr_ace );
1085 prev_entry->next = NULL;
1087 /* We deleted the entire list. */
1093 for (allow_ace_p = curr_ace->next; allow_ace_p; allow_ace_p = allow_ace_p->next) {
1096 * Only mask off allow entries.
1099 if (allow_ace_p->attr != ALLOW_ACE)
1102 allow_ace_p->perms &= ~curr_ace->perms;
1106 * Now it's been applied, remove it.
1109 DLIST_REMOVE(ace_list, curr_ace);
1112 /* Pass 2 above - deal with deny user entries. */
1114 for (curr_ace = ace_list; curr_ace; curr_ace = curr_ace_next) {
1115 mode_t new_perms = (mode_t)0;
1116 canon_ace *allow_ace_p;
1119 curr_ace_next = curr_ace->next; /* So we can't lose the link. */
1121 if (curr_ace->attr != DENY_ACE)
1124 if (curr_ace->owner_type != UID_ACE)
1127 if (curr_ace->perms == ALL_ACE_PERMS) {
1130 * Optimisation - this is a deny everything to this user.
1131 * Convert to an allow nothing and push to the end of the list.
1134 curr_ace->attr = ALLOW_ACE;
1135 curr_ace->perms = (mode_t)0;
1136 DLIST_DEMOTE(ace_list, curr_ace, tmp_ace);
1140 for (allow_ace_p = curr_ace->next; allow_ace_p; allow_ace_p = allow_ace_p->next) {
1142 if (allow_ace_p->attr != ALLOW_ACE)
1145 /* We process GID_ACE and WORLD_ACE entries only. */
1147 if (allow_ace_p->owner_type == UID_ACE)
1150 if (uid_entry_in_group( curr_ace, allow_ace_p))
1151 new_perms |= allow_ace_p->perms;
1155 * Convert to a allow entry, modify the perms and push to the end
1159 curr_ace->attr = ALLOW_ACE;
1160 curr_ace->perms = (new_perms & ~curr_ace->perms);
1161 DLIST_DEMOTE(ace_list, curr_ace, tmp_ace);
1164 /* Pass 3 above - deal with deny group entries. */
1166 for (curr_ace = ace_list; curr_ace; curr_ace = curr_ace_next) {
1168 canon_ace *allow_ace_p;
1169 canon_ace *allow_everyone_p = NULL;
1171 curr_ace_next = curr_ace->next; /* So we can't lose the link. */
1173 if (curr_ace->attr != DENY_ACE)
1176 if (curr_ace->owner_type != GID_ACE)
1179 for (allow_ace_p = curr_ace->next; allow_ace_p; allow_ace_p = allow_ace_p->next) {
1181 if (allow_ace_p->attr != ALLOW_ACE)
1184 /* Store a pointer to the Everyone allow, if it exists. */
1185 if (allow_ace_p->owner_type == WORLD_ACE)
1186 allow_everyone_p = allow_ace_p;
1188 /* We process UID_ACE entries only. */
1190 if (allow_ace_p->owner_type != UID_ACE)
1193 /* Mask off the deny group perms. */
1195 if (uid_entry_in_group( allow_ace_p, curr_ace))
1196 allow_ace_p->perms &= ~curr_ace->perms;
1200 * Convert the deny to an allow with the correct perms and
1201 * push to the end of the list.
1204 curr_ace->attr = ALLOW_ACE;
1205 if (allow_everyone_p)
1206 curr_ace->perms = allow_everyone_p->perms & ~curr_ace->perms;
1208 curr_ace->perms = (mode_t)0;
1209 DLIST_DEMOTE(ace_list, curr_ace, tmp_ace);
1213 *pp_ace_list = ace_list;
1216 /****************************************************************************
1217 Create a default mode that will be used if a security descriptor entry has
1218 no user/group/world entries.
1219 ****************************************************************************/
1221 static mode_t create_default_mode(files_struct *fsp, BOOL interitable_mode)
1223 int snum = SNUM(fsp->conn);
1224 mode_t and_bits = (mode_t)0;
1225 mode_t or_bits = (mode_t)0;
1226 mode_t mode = interitable_mode ? unix_mode( fsp->conn, FILE_ATTRIBUTE_ARCHIVE, fsp->fsp_name) : S_IRUSR;
1228 if (fsp->is_directory)
1229 mode |= (S_IWUSR|S_IXUSR);
1232 * Now AND with the create mode/directory mode bits then OR with the
1233 * force create mode/force directory mode bits.
1236 if (fsp->is_directory) {
1237 and_bits = lp_dir_security_mask(snum);
1238 or_bits = lp_force_dir_security_mode(snum);
1240 and_bits = lp_security_mask(snum);
1241 or_bits = lp_force_security_mode(snum);
1244 return ((mode & and_bits)|or_bits);
1247 /****************************************************************************
1248 Unpack a SEC_DESC into two canonical ace lists. We don't depend on this
1250 ****************************************************************************/
1252 static BOOL unpack_canon_ace(files_struct *fsp,
1253 SMB_STRUCT_STAT *pst,
1254 DOM_SID *pfile_owner_sid,
1255 DOM_SID *pfile_grp_sid,
1256 canon_ace **ppfile_ace, canon_ace **ppdir_ace,
1257 uint32 security_info_sent, SEC_DESC *psd)
1259 canon_ace *file_ace = NULL;
1260 canon_ace *dir_ace = NULL;
1265 if(security_info_sent == 0) {
1266 DEBUG(0,("unpack_canon_ace: no security info sent !\n"));
1271 * If no DACL then this is a chown only security descriptor.
1274 if(!(security_info_sent & DACL_SECURITY_INFORMATION) || !psd->dacl)
1278 * Now go through the DACL and create the canon_ace lists.
1281 if (!create_canon_ace_lists( fsp, pfile_owner_sid, pfile_grp_sid,
1282 &file_ace, &dir_ace, psd->dacl))
1285 if ((file_ace == NULL) && (dir_ace == NULL)) {
1286 /* W2K traverse DACL set - ignore. */
1291 * Go through the canon_ace list and merge entries
1292 * belonging to identical users of identical allow or deny type.
1293 * We can do this as all deny entries come first, followed by
1294 * all allow entries (we have mandated this before accepting this acl).
1297 print_canon_ace_list( "file ace - before merge", file_ace);
1298 merge_aces( &file_ace );
1300 print_canon_ace_list( "dir ace - before merge", dir_ace);
1301 merge_aces( &dir_ace );
1304 * NT ACLs are order dependent. Go through the acl lists and
1305 * process DENY entries by masking the allow entries.
1308 print_canon_ace_list( "file ace - before deny", file_ace);
1309 process_deny_list( &file_ace);
1311 print_canon_ace_list( "dir ace - before deny", dir_ace);
1312 process_deny_list( &dir_ace);
1315 * A well formed POSIX file or default ACL has at least 3 entries, a
1316 * SMB_ACL_USER_OBJ, SMB_ACL_GROUP_OBJ, SMB_ACL_OTHER_OBJ
1317 * and optionally a mask entry. Ensure this is the case.
1320 print_canon_ace_list( "file ace - before valid", file_ace);
1323 * A default 3 element mode entry for a file should be r-- --- ---.
1324 * A default 3 element mode entry for a directory should be rwx --- ---.
1327 pst->st_mode = create_default_mode(fsp, False);
1329 if (!ensure_canon_entry_valid(&file_ace, fsp, pfile_owner_sid, pfile_grp_sid, pst, True)) {
1330 free_canon_ace_list(file_ace);
1331 free_canon_ace_list(dir_ace);
1335 print_canon_ace_list( "dir ace - before valid", dir_ace);
1338 * A default inheritable 3 element mode entry for a directory should be the
1339 * mode Samba will use to create a file within. Ensure user rwx bits are set if
1343 pst->st_mode = create_default_mode(fsp, True);
1345 if (!ensure_canon_entry_valid(&dir_ace, fsp, pfile_owner_sid, pfile_grp_sid, pst, True)) {
1346 free_canon_ace_list(file_ace);
1347 free_canon_ace_list(dir_ace);
1351 print_canon_ace_list( "file ace - return", file_ace);
1352 print_canon_ace_list( "dir ace - return", dir_ace);
1354 *ppfile_ace = file_ace;
1355 *ppdir_ace = dir_ace;
1360 /******************************************************************************
1361 When returning permissions, try and fit NT display
1362 semantics if possible. Note the the canon_entries here must have been malloced.
1363 The list format should be - first entry = owner, followed by group and other user
1364 entries, last entry = other.
1366 Note that this doesn't exactly match the NT semantics for an ACL. As POSIX entries
1367 are not ordered, and match on the most specific entry rather than walking a list,
1368 then a simple POSIX permission of rw-r--r-- should really map to 6 entries,
1370 Entry 0: owner : deny all except read and write.
1371 Entry 1: group : deny all except read.
1372 Entry 2: Everyone : deny all except read.
1373 Entry 3: owner : allow read and write.
1374 Entry 4: group : allow read.
1375 Entry 5: Everyone : allow read.
1377 But NT cannot display this in their ACL editor !
1378 ********************************************************************************/
1380 static void arrange_posix_perms( char *filename, canon_ace **pp_list_head)
1382 canon_ace *list_head = *pp_list_head;
1383 canon_ace *owner_ace = NULL;
1384 canon_ace *other_ace = NULL;
1385 canon_ace *ace = NULL;
1387 for (ace = list_head; ace; ace = ace->next) {
1388 if (ace->type == SMB_ACL_USER_OBJ)
1390 else if (ace->type == SMB_ACL_OTHER) {
1391 /* Last ace - this is "other" */
1396 if (!owner_ace || !other_ace) {
1397 DEBUG(0,("arrange_posix_perms: Invalid POSIX permissions for file %s, missing owner or other.\n",
1403 * The POSIX algorithm applies to owner first, and other last,
1404 * so ensure they are arranged in this order.
1408 DLIST_PROMOTE(list_head, owner_ace);
1412 DLIST_DEMOTE(list_head, other_ace, ace);
1415 /* We have probably changed the head of the list. */
1417 *pp_list_head = list_head;
1420 /****************************************************************************
1421 Create a linked list of canonical ACE entries.
1422 ****************************************************************************/
1424 static canon_ace *canonicalise_acl( files_struct *fsp, SMB_ACL_T posix_acl, SMB_STRUCT_STAT *psbuf,
1425 DOM_SID *powner, DOM_SID *pgroup)
1427 extern DOM_SID global_sid_World;
1428 connection_struct *conn = fsp->conn;
1429 mode_t acl_mask = (S_IRUSR|S_IWUSR|S_IXUSR);
1430 canon_ace *list_head = NULL;
1431 canon_ace *ace = NULL;
1432 canon_ace *next_ace = NULL;
1433 int entry_id = SMB_ACL_FIRST_ENTRY;
1434 SMB_ACL_ENTRY_T entry;
1437 while ( posix_acl && (conn->vfs_ops.sys_acl_get_entry(conn, posix_acl, entry_id, &entry) == 1)) {
1438 SMB_ACL_TAG_T tagtype;
1439 SMB_ACL_PERMSET_T permset;
1442 enum ace_owner owner_type;
1445 if (entry_id == SMB_ACL_FIRST_ENTRY)
1446 entry_id = SMB_ACL_NEXT_ENTRY;
1448 /* Is this a MASK entry ? */
1449 if (conn->vfs_ops.sys_acl_get_tag_type(conn, entry, &tagtype) == -1)
1452 if (conn->vfs_ops.sys_acl_get_permset(conn, entry, &permset) == -1)
1455 /* Decide which SID to use based on the ACL type. */
1457 case SMB_ACL_USER_OBJ:
1458 /* Get the SID from the owner. */
1459 uid_to_sid( &sid, psbuf->st_uid );
1460 unix_ug.uid = psbuf->st_uid;
1461 owner_type = UID_ACE;
1465 uid_t *puid = (uid_t *)conn->vfs_ops.sys_acl_get_qualifier(conn, entry);
1467 DEBUG(0,("canonicalise_acl: Failed to get uid.\n"));
1470 uid_to_sid( &sid, *puid);
1471 unix_ug.uid = *puid;
1472 owner_type = UID_ACE;
1473 conn->vfs_ops.sys_acl_free_qualifier(conn, (void *)puid,tagtype);
1476 case SMB_ACL_GROUP_OBJ:
1477 /* Get the SID from the owning group. */
1478 gid_to_sid( &sid, psbuf->st_gid );
1479 unix_ug.gid = psbuf->st_gid;
1480 owner_type = GID_ACE;
1484 gid_t *pgid = (gid_t *)conn->vfs_ops.sys_acl_get_qualifier(conn, entry);
1486 DEBUG(0,("canonicalise_acl: Failed to get gid.\n"));
1489 gid_to_sid( &sid, *pgid);
1490 unix_ug.gid = *pgid;
1491 owner_type = GID_ACE;
1492 conn->vfs_ops.sys_acl_free_qualifier(conn, (void *)pgid,tagtype);
1496 acl_mask = convert_permset_to_mode_t(conn, permset);
1497 continue; /* Don't count the mask as an entry. */
1499 /* Use the Everyone SID */
1500 sid = global_sid_World;
1502 owner_type = WORLD_ACE;
1505 DEBUG(0,("canonicalise_acl: Unknown tagtype %u\n", (unsigned int)tagtype));
1510 * Add this entry to the list.
1513 if ((ace = (canon_ace *)malloc(sizeof(canon_ace))) == NULL)
1517 ace->type = tagtype;
1518 ace->perms = convert_permset_to_mode_t(conn, permset);
1519 ace->attr = ALLOW_ACE;
1521 ace->unix_ug = unix_ug;
1522 ace->owner_type = owner_type;
1524 DLIST_ADD(list_head, ace);
1528 * This next call will ensure we have at least a user/group/world set.
1531 if (!ensure_canon_entry_valid(&list_head, fsp, powner, pgroup, psbuf, False))
1534 arrange_posix_perms(fsp->fsp_name,&list_head );
1537 * Now go through the list, masking the permissions with the
1538 * acl_mask. Ensure all DENY Entries are at the start of the list.
1541 DEBUG(10,("canonicalise_acl: ace entries before arrange :\n"));
1543 for ( ace_count = 0, ace = list_head; ace; ace = next_ace, ace_count++) {
1544 next_ace = ace->next;
1546 /* Masks are only applied to entries other than USER_OBJ and OTHER. */
1547 if (ace->type != SMB_ACL_OTHER && ace->type != SMB_ACL_USER_OBJ)
1548 ace->perms &= acl_mask;
1550 if (ace->perms == 0) {
1551 DLIST_PROMOTE(list_head, ace);
1554 if( DEBUGLVL( 10 ) ) {
1555 print_canon_ace(ace, ace_count);
1559 print_canon_ace_list( "canonicalise_acl: ace entries after arrange", list_head );
1565 free_canon_ace_list(list_head);
1569 /****************************************************************************
1570 Attempt to apply an ACL to a file or directory.
1571 ****************************************************************************/
1573 static BOOL set_canon_ace_list(files_struct *fsp, canon_ace *the_ace, BOOL default_ace, BOOL *pacl_set_support)
1575 connection_struct *conn = fsp->conn;
1577 SMB_ACL_T the_acl = conn->vfs_ops.sys_acl_init(conn, (int)count_canon_ace_list(the_ace) + 1);
1580 SMB_ACL_ENTRY_T mask_entry;
1581 SMB_ACL_PERMSET_T mask_permset;
1582 SMB_ACL_TYPE_T the_acl_type = (default_ace ? SMB_ACL_TYPE_DEFAULT : SMB_ACL_TYPE_ACCESS);
1584 if (the_acl == NULL) {
1586 if (errno != ENOSYS) {
1588 * Only print this error message if we have some kind of ACL
1589 * support that's not working. Otherwise we would always get this.
1591 DEBUG(0,("set_canon_ace_list: Unable to init %s ACL. (%s)\n",
1592 default_ace ? "default" : "file", strerror(errno) ));
1594 *pacl_set_support = False;
1598 for (i = 0, p_ace = the_ace; p_ace; p_ace = p_ace->next, i++ ) {
1599 SMB_ACL_ENTRY_T the_entry;
1600 SMB_ACL_PERMSET_T the_permset;
1603 * Get the entry for this ACE.
1606 if (conn->vfs_ops.sys_acl_create_entry(conn, &the_acl, &the_entry) == -1) {
1607 DEBUG(0,("set_canon_ace_list: Failed to create entry %d. (%s)\n",
1608 i, strerror(errno) ));
1613 * Ok - we now know the ACL calls should be working, don't
1614 * allow fallback to chmod.
1617 *pacl_set_support = True;
1620 * Initialise the entry from the canon_ace.
1624 * First tell the entry what type of ACE this is.
1627 if (conn->vfs_ops.sys_acl_set_tag_type(conn, the_entry, p_ace->type) == -1) {
1628 DEBUG(0,("set_canon_ace_list: Failed to set tag type on entry %d. (%s)\n",
1629 i, strerror(errno) ));
1634 * Only set the qualifier (user or group id) if the entry is a user
1638 if ((p_ace->type == SMB_ACL_USER) || (p_ace->type == SMB_ACL_GROUP)) {
1639 if (conn->vfs_ops.sys_acl_set_qualifier(conn, the_entry,(void *)&p_ace->unix_ug.uid) == -1) {
1640 DEBUG(0,("set_canon_ace_list: Failed to set qualifier on entry %d. (%s)\n",
1641 i, strerror(errno) ));
1647 * Convert the mode_t perms in the canon_ace to a POSIX permset.
1650 if (conn->vfs_ops.sys_acl_get_permset(conn, the_entry, &the_permset) == -1) {
1651 DEBUG(0,("set_canon_ace_list: Failed to get permset on entry %d. (%s)\n",
1652 i, strerror(errno) ));
1656 if (map_acl_perms_to_permset(conn, p_ace->perms, &the_permset) == -1) {
1657 DEBUG(0,("set_canon_ace_list: Failed to create permset for mode (%u) on entry %d. (%s)\n",
1658 (unsigned int)p_ace->perms, i, strerror(errno) ));
1663 * ..and apply them to the entry.
1666 if (conn->vfs_ops.sys_acl_set_permset(conn, the_entry, the_permset) == -1) {
1667 DEBUG(0,("set_canon_ace_list: Failed to add permset on entry %d. (%s)\n",
1668 i, strerror(errno) ));
1673 print_canon_ace( p_ace, i);
1677 * Add in a mask of rwx.
1680 if (conn->vfs_ops.sys_acl_create_entry( conn, &the_acl, &mask_entry) == -1) {
1681 DEBUG(0,("set_canon_ace_list: Failed to create mask entry. (%s)\n", strerror(errno) ));
1685 if (conn->vfs_ops.sys_acl_set_tag_type(conn, mask_entry, SMB_ACL_MASK) == -1) {
1686 DEBUG(0,("set_canon_ace_list: Failed to set tag type on mask entry. (%s)\n",strerror(errno) ));
1690 if (conn->vfs_ops.sys_acl_get_permset(conn, mask_entry, &mask_permset) == -1) {
1691 DEBUG(0,("set_canon_ace_list: Failed to get mask permset. (%s)\n", strerror(errno) ));
1695 if (map_acl_perms_to_permset(conn, S_IRUSR|S_IWUSR|S_IXUSR, &mask_permset) == -1) {
1696 DEBUG(0,("set_canon_ace_list: Failed to create mask permset. (%s)\n", strerror(errno) ));
1700 if (conn->vfs_ops.sys_acl_set_permset(conn, mask_entry, mask_permset) == -1) {
1701 DEBUG(0,("set_canon_ace_list: Failed to add mask permset. (%s)\n", strerror(errno) ));
1706 * Check if the ACL is valid.
1709 if (conn->vfs_ops.sys_acl_valid(conn, the_acl) == -1) {
1710 DEBUG(0,("set_canon_ace_list: ACL type (%s) is invalid for set (%s).\n",
1711 the_acl_type == SMB_ACL_TYPE_DEFAULT ? "directory default" : "file",
1717 * Finally apply it to the file or directory.
1720 if(default_ace || fsp->is_directory || fsp->fd == -1) {
1721 if (conn->vfs_ops.sys_acl_set_file(conn, fsp->fsp_name, the_acl_type, the_acl) == -1) {
1723 * Some systems allow all the above calls and only fail with no ACL support
1724 * when attempting to apply the acl. HPUX with HFS is an example of this. JRA.
1726 if (errno == ENOSYS)
1727 *pacl_set_support = False;
1728 DEBUG(2,("set_canon_ace_list: sys_acl_set_file type %s failed for file %s (%s).\n",
1729 the_acl_type == SMB_ACL_TYPE_DEFAULT ? "directory default" : "file",
1730 fsp->fsp_name, strerror(errno) ));
1734 if (conn->vfs_ops.sys_acl_set_fd(fsp, fsp->fd, the_acl) == -1) {
1736 * Some systems allow all the above calls and only fail with no ACL support
1737 * when attempting to apply the acl. HPUX with HFS is an example of this. JRA.
1739 if (errno == ENOSYS)
1740 *pacl_set_support = False;
1741 DEBUG(2,("set_canon_ace_list: sys_acl_set_file failed for file %s (%s).\n",
1742 fsp->fsp_name, strerror(errno) ));
1751 if (the_acl != NULL)
1752 conn->vfs_ops.sys_acl_free_acl(conn, the_acl);
1757 /****************************************************************************
1758 Convert a canon_ace to a generic 3 element permission - if possible.
1759 ****************************************************************************/
1761 #define MAP_PERM(p,mask,result) (((p) & (mask)) ? (result) : 0 )
1763 static BOOL convert_canon_ace_to_posix_perms( files_struct *fsp, canon_ace *file_ace_list, mode_t *posix_perms)
1765 int snum = SNUM(fsp->conn);
1766 size_t ace_count = count_canon_ace_list(file_ace_list);
1768 canon_ace *owner_ace = NULL;
1769 canon_ace *group_ace = NULL;
1770 canon_ace *other_ace = NULL;
1774 if (ace_count != 3) {
1775 DEBUG(3,("convert_canon_ace_to_posix_perms: Too many ACE entries for file %s to convert to \
1776 posix perms.\n", fsp->fsp_name ));
1780 for (ace_p = file_ace_list; ace_p; ace_p = ace_p->next) {
1781 if (ace_p->owner_type == UID_ACE)
1783 else if (ace_p->owner_type == GID_ACE)
1785 else if (ace_p->owner_type == WORLD_ACE)
1789 if (!owner_ace || !group_ace || !other_ace) {
1790 DEBUG(3,("convert_canon_ace_to_posix_perms: Can't get standard entries for file %s.\n",
1795 *posix_perms = (mode_t)0;
1797 *posix_perms |= owner_ace->perms;
1798 *posix_perms |= MAP_PERM(group_ace->perms, S_IRUSR, S_IRGRP);
1799 *posix_perms |= MAP_PERM(group_ace->perms, S_IWUSR, S_IWGRP);
1800 *posix_perms |= MAP_PERM(group_ace->perms, S_IXUSR, S_IXGRP);
1801 *posix_perms |= MAP_PERM(other_ace->perms, S_IRUSR, S_IROTH);
1802 *posix_perms |= MAP_PERM(other_ace->perms, S_IWUSR, S_IWOTH);
1803 *posix_perms |= MAP_PERM(other_ace->perms, S_IXUSR, S_IXOTH);
1805 /* The owner must have at least read access. */
1807 *posix_perms |= S_IRUSR;
1808 if (fsp->is_directory)
1809 *posix_perms |= (S_IWUSR|S_IXUSR);
1811 /* If requested apply the masks. */
1813 /* Get the initial bits to apply. */
1815 if (fsp->is_directory) {
1816 and_bits = lp_dir_security_mask(snum);
1817 or_bits = lp_force_dir_security_mode(snum);
1819 and_bits = lp_security_mask(snum);
1820 or_bits = lp_force_security_mode(snum);
1823 *posix_perms = (((*posix_perms) & and_bits)|or_bits);
1825 DEBUG(10,("convert_canon_ace_to_posix_perms: converted u=%o,g=%o,w=%o to perm=0%o for file %s.\n",
1826 (int)owner_ace->perms, (int)group_ace->perms, (int)other_ace->perms, (int)*posix_perms,
1832 static int nt_ace_comp( SEC_ACE *a1, SEC_ACE *a2)
1834 if (a1->type == a2->type)
1837 if (a1->type == SEC_ACE_TYPE_ACCESS_DENIED && a2->type == SEC_ACE_TYPE_ACCESS_ALLOWED)
1842 /****************************************************************************
1843 Reply to query a security descriptor from an fsp. If it succeeds it allocates
1844 the space for the return elements and returns the size needed to return the
1845 security descriptor. This should be the only external function needed for
1846 the UNIX style get ACL.
1847 ****************************************************************************/
1849 size_t get_nt_acl(files_struct *fsp, SEC_DESC **ppdesc)
1851 connection_struct *conn = fsp->conn;
1852 SMB_STRUCT_STAT sbuf;
1853 SEC_ACE *nt_ace_list = NULL;
1857 SEC_ACL *psa = NULL;
1858 size_t num_acls = 0;
1859 size_t num_dir_acls = 0;
1860 size_t num_aces = 0;
1861 SMB_ACL_T posix_acl = NULL;
1862 SMB_ACL_T dir_acl = NULL;
1863 canon_ace *file_ace = NULL;
1864 canon_ace *dir_ace = NULL;
1868 DEBUG(10,("get_nt_acl: called for file %s\n", fsp->fsp_name ));
1870 if(fsp->is_directory || fsp->fd == -1) {
1872 /* Get the stat struct for the owner info. */
1873 if(vfs_stat(fsp->conn,fsp->fsp_name, &sbuf) != 0) {
1877 * Get the ACL from the path.
1880 posix_acl = conn->vfs_ops.sys_acl_get_file(conn, fsp->fsp_name, SMB_ACL_TYPE_ACCESS);
1883 * If it's a directory get the default POSIX ACL.
1886 if(fsp->is_directory)
1887 dir_acl = conn->vfs_ops.sys_acl_get_file(conn, fsp->fsp_name, SMB_ACL_TYPE_DEFAULT);
1891 /* Get the stat struct for the owner info. */
1892 if(vfs_fstat(fsp,fsp->fd,&sbuf) != 0) {
1896 * Get the ACL from the fd.
1898 posix_acl = conn->vfs_ops.sys_acl_get_fd(fsp, fsp->fd);
1901 DEBUG(5,("get_nt_acl : file ACL %s, directory ACL %s\n",
1902 posix_acl ? "present" : "absent",
1903 dir_acl ? "present" : "absent" ));
1906 * Get the owner, group and world SIDs.
1909 create_file_sids(&sbuf, &owner_sid, &group_sid);
1911 /* Create the canon_ace lists. */
1912 file_ace = canonicalise_acl( fsp, posix_acl, &sbuf, &owner_sid, &group_sid);
1913 num_acls = count_canon_ace_list(file_ace);
1915 /* We must have *some* ACLS. */
1917 if (num_acls == 0) {
1918 DEBUG(0,("get_nt_acl : No ACLs on file (%s) !\n", fsp->fsp_name ));
1922 if (fsp->is_directory) {
1924 * If we have to fake a default ACL then this is the mode to use.
1926 sbuf.st_mode = unix_mode( fsp->conn, FILE_ATTRIBUTE_ARCHIVE, fsp->fsp_name);
1928 dir_ace = canonicalise_acl(fsp, dir_acl, &sbuf, &owner_sid, &group_sid);
1929 num_dir_acls = count_canon_ace_list(dir_ace);
1932 /* Allocate the ace list. */
1933 if ((nt_ace_list = (SEC_ACE *)malloc((num_acls + num_dir_acls)* sizeof(SEC_ACE))) == NULL) {
1934 DEBUG(0,("get_nt_acl: Unable to malloc space for nt_ace_list.\n"));
1938 memset(nt_ace_list, '\0', (num_acls + num_dir_acls) * sizeof(SEC_ACE) );
1941 * Create the NT ACE list from the canonical ace lists.
1951 for (i = 0; i < num_acls; i++, ace = ace->next) {
1952 SEC_ACCESS acc = map_canon_ace_perms(&nt_acl_type, &owner_sid, ace );
1953 init_sec_ace(&nt_ace_list[num_aces++], &ace->trustee, nt_acl_type, acc, 0);
1958 for (i = 0; i < num_dir_acls; i++, ace = ace->next) {
1959 SEC_ACCESS acc = map_canon_ace_perms(&nt_acl_type, &owner_sid, ace );
1960 init_sec_ace(&nt_ace_list[num_aces++], &ace->trustee, nt_acl_type, acc,
1961 SEC_ACE_FLAG_OBJECT_INHERIT|SEC_ACE_FLAG_CONTAINER_INHERIT|SEC_ACE_FLAG_INHERIT_ONLY);
1965 * Sort to force deny entries to the front.
1968 if (num_acls + num_dir_acls)
1969 qsort( nt_ace_list, num_acls + num_dir_acls, sizeof(nt_ace_list[0]), QSORT_CAST nt_ace_comp);
1973 if((psa = make_sec_acl( main_loop_talloc_get(), ACL_REVISION, num_aces, nt_ace_list)) == NULL) {
1974 DEBUG(0,("get_nt_acl: Unable to malloc space for acl.\n"));
1979 *ppdesc = make_standard_sec_desc( main_loop_talloc_get(), &owner_sid, &group_sid, psa, &sd_size);
1982 DEBUG(0,("get_nt_acl: Unable to malloc space for security descriptor.\n"));
1989 conn->vfs_ops.sys_acl_free_acl(conn, posix_acl);
1991 conn->vfs_ops.sys_acl_free_acl(conn, dir_acl);
1992 free_canon_ace_list(file_ace);
1993 free_canon_ace_list(dir_ace);
1994 SAFE_FREE(nt_ace_list);
1999 /****************************************************************************
2000 Reply to set a security descriptor on an fsp. security_info_sent is the
2001 description of the following NT ACL.
2002 This should be the only external function needed for the UNIX style set ACL.
2003 ****************************************************************************/
2005 BOOL set_nt_acl(files_struct *fsp, uint32 security_info_sent, SEC_DESC *psd)
2007 connection_struct *conn = fsp->conn;
2008 uid_t user = (uid_t)-1;
2009 gid_t grp = (gid_t)-1;
2010 SMB_STRUCT_STAT sbuf;
2011 DOM_SID file_owner_sid;
2012 DOM_SID file_grp_sid;
2013 canon_ace *file_ace_list = NULL;
2014 canon_ace *dir_ace_list = NULL;
2015 BOOL acl_perms = False;
2016 mode_t orig_mode = (mode_t)0;
2020 DEBUG(10,("set_nt_acl: called for file %s\n", fsp->fsp_name ));
2023 * Get the current state of the file.
2026 if(fsp->is_directory || fsp->fd == -1) {
2027 if(vfs_stat(fsp->conn,fsp->fsp_name, &sbuf) != 0)
2030 if(vfs_fstat(fsp,fsp->fd,&sbuf) != 0)
2034 /* Save the original elements we check against. */
2035 orig_mode = sbuf.st_mode;
2036 orig_uid = sbuf.st_uid;
2037 orig_gid = sbuf.st_gid;
2040 * Unpack the user/group/world id's.
2043 if (!unpack_nt_owners( &sbuf, &user, &grp, security_info_sent, psd))
2047 * Do we need to chown ?
2050 if((user != (uid_t)-1 || grp != (uid_t)-1) && (orig_uid != user || orig_gid != grp)) {
2052 DEBUG(3,("set_nt_acl: chown %s. uid = %u, gid = %u.\n",
2053 fsp->fsp_name, (unsigned int)user, (unsigned int)grp ));
2055 if(vfs_chown( fsp->conn, fsp->fsp_name, user, grp) == -1) {
2056 DEBUG(3,("set_nt_acl: chown %s, %u, %u failed. Error = %s.\n",
2057 fsp->fsp_name, (unsigned int)user, (unsigned int)grp, strerror(errno) ));
2062 * Recheck the current state of the file, which may have changed.
2063 * (suid/sgid bits, for instance)
2066 if(fsp->is_directory) {
2067 if(vfs_stat(fsp->conn, fsp->fsp_name, &sbuf) != 0) {
2075 ret = vfs_stat(fsp->conn, fsp->fsp_name, &sbuf);
2077 ret = vfs_fstat(fsp,fsp->fd,&sbuf);
2083 /* Save the original elements we check against. */
2084 orig_mode = sbuf.st_mode;
2085 orig_uid = sbuf.st_uid;
2086 orig_gid = sbuf.st_gid;
2089 create_file_sids(&sbuf, &file_owner_sid, &file_grp_sid);
2091 acl_perms = unpack_canon_ace( fsp, &sbuf, &file_owner_sid, &file_grp_sid,
2092 &file_ace_list, &dir_ace_list, security_info_sent, psd);
2094 if ((file_ace_list == NULL) && (dir_ace_list == NULL)) {
2095 /* W2K traverse DACL set - ignore. */
2100 DEBUG(3,("set_nt_acl: cannot set permissions\n"));
2101 free_canon_ace_list(file_ace_list);
2102 free_canon_ace_list(dir_ace_list);
2107 * Only change security if we got a DACL.
2110 if((security_info_sent & DACL_SECURITY_INFORMATION) && (psd->dacl != NULL)) {
2112 BOOL acl_set_support = False;
2116 * Try using the POSIX ACL set first. Fall back to chmod if
2117 * we have no ACL support on this filesystem.
2120 if (acl_perms && file_ace_list) {
2121 ret = set_canon_ace_list(fsp, file_ace_list, False, &acl_set_support);
2122 if (acl_set_support && ret == False) {
2123 DEBUG(3,("set_nt_acl: failed to set file acl on file %s (%s).\n", fsp->fsp_name, strerror(errno) ));
2124 free_canon_ace_list(file_ace_list);
2125 free_canon_ace_list(dir_ace_list);
2130 if (acl_perms && acl_set_support && fsp->is_directory) {
2132 if (!set_canon_ace_list(fsp, dir_ace_list, True, &acl_set_support)) {
2133 DEBUG(3,("set_nt_acl: failed to set default acl on directory %s (%s).\n", fsp->fsp_name, strerror(errno) ));
2134 free_canon_ace_list(file_ace_list);
2135 free_canon_ace_list(dir_ace_list);
2141 * No default ACL - delete one if it exists.
2144 if (conn->vfs_ops.sys_acl_delete_def_file(conn, fsp->fsp_name) == -1) {
2145 DEBUG(3,("set_nt_acl: sys_acl_delete_def_file failed (%s)\n", strerror(errno)));
2146 free_canon_ace_list(file_ace_list);
2153 * If we cannot set using POSIX ACLs we fall back to checking if we need to chmod.
2156 if(!acl_set_support && acl_perms) {
2159 if (!convert_canon_ace_to_posix_perms( fsp, file_ace_list, &posix_perms)) {
2160 free_canon_ace_list(file_ace_list);
2161 free_canon_ace_list(dir_ace_list);
2162 DEBUG(3,("set_nt_acl: failed to convert file acl to posix permissions for file %s.\n",
2167 if (orig_mode != posix_perms) {
2169 DEBUG(3,("set_nt_acl: chmod %s. perms = 0%o.\n",
2170 fsp->fsp_name, (unsigned int)posix_perms ));
2172 if(conn->vfs_ops.chmod(conn,fsp->fsp_name, posix_perms) == -1) {
2173 DEBUG(3,("set_nt_acl: chmod %s, 0%o failed. Error = %s.\n",
2174 fsp->fsp_name, (unsigned int)posix_perms, strerror(errno) ));
2175 free_canon_ace_list(file_ace_list);
2176 free_canon_ace_list(dir_ace_list);
2183 free_canon_ace_list(file_ace_list);
2184 free_canon_ace_list(dir_ace_list);
2189 /****************************************************************************
2190 Do a chmod by setting the ACL USER_OBJ, GROUP_OBJ and OTHER bits in an ACL
2191 and set the mask to rwx. Needed to preserve complex ACLs set by NT.
2192 ****************************************************************************/
2194 static int chmod_acl_internals( connection_struct *conn, SMB_ACL_T posix_acl, mode_t mode)
2196 int entry_id = SMB_ACL_FIRST_ENTRY;
2197 SMB_ACL_ENTRY_T entry;
2198 int num_entries = 0;
2200 while ( conn->vfs_ops.sys_acl_get_entry(conn, posix_acl, entry_id, &entry) == 1) {
2201 SMB_ACL_TAG_T tagtype;
2202 SMB_ACL_PERMSET_T permset;
2206 if (entry_id == SMB_ACL_FIRST_ENTRY)
2207 entry_id = SMB_ACL_NEXT_ENTRY;
2209 if (conn->vfs_ops.sys_acl_get_tag_type(conn, entry, &tagtype) == -1)
2212 if (conn->vfs_ops.sys_acl_get_permset(conn, entry, &permset) == -1)
2218 case SMB_ACL_USER_OBJ:
2219 perms = unix_perms_to_acl_perms(mode, S_IRUSR, S_IWUSR, S_IXUSR);
2221 case SMB_ACL_GROUP_OBJ:
2222 perms = unix_perms_to_acl_perms(mode, S_IRGRP, S_IWGRP, S_IXGRP);
2225 perms = S_IRUSR|S_IWUSR|S_IXUSR;
2228 perms = unix_perms_to_acl_perms(mode, S_IROTH, S_IWOTH, S_IXOTH);
2234 if (map_acl_perms_to_permset(conn, perms, &permset) == -1)
2237 if (conn->vfs_ops.sys_acl_set_permset(conn, entry, permset) == -1)
2242 * If this is a simple 3 element ACL or no elements then it's a standard
2243 * UNIX permission set. Just use chmod...
2246 if ((num_entries == 3) || (num_entries == 0))
2252 /****************************************************************************
2253 Do a chmod by setting the ACL USER_OBJ, GROUP_OBJ and OTHER bits in an ACL
2254 and set the mask to rwx. Needed to preserve complex ACLs set by NT.
2255 Note that name is in UNIX character set.
2256 ****************************************************************************/
2258 int chmod_acl(connection_struct *conn, const char *name, mode_t mode)
2260 SMB_ACL_T posix_acl = NULL;
2263 if ((posix_acl = conn->vfs_ops.sys_acl_get_file(conn, name, SMB_ACL_TYPE_ACCESS)) == NULL)
2266 if ((ret = chmod_acl_internals(conn, posix_acl, mode)) == -1)
2269 ret = conn->vfs_ops.sys_acl_set_file(conn, name, SMB_ACL_TYPE_ACCESS, posix_acl);
2273 conn->vfs_ops.sys_acl_free_acl(conn, posix_acl);
2277 /****************************************************************************
2278 Do an fchmod by setting the ACL USER_OBJ, GROUP_OBJ and OTHER bits in an ACL
2279 and set the mask to rwx. Needed to preserve complex ACLs set by NT.
2280 ****************************************************************************/
2282 int fchmod_acl(files_struct *fsp, int fd, mode_t mode)
2284 connection_struct *conn = fsp->conn;
2285 SMB_ACL_T posix_acl = NULL;
2288 if ((posix_acl = conn->vfs_ops.sys_acl_get_fd(fsp, fd)) == NULL)
2291 if ((ret = chmod_acl_internals(conn, posix_acl, mode)) == -1)
2294 ret = conn->vfs_ops.sys_acl_set_fd(fsp, fd, posix_acl);
2298 conn->vfs_ops.sys_acl_free_acl(conn, posix_acl);
2302 BOOL directory_has_default_acl(connection_struct *conn, const char *fname)
2304 SMB_ACL_T dir_acl = conn->vfs_ops.sys_acl_get_file( conn, fname, SMB_ACL_TYPE_DEFAULT);
2305 BOOL has_acl = False;
2306 SMB_ACL_ENTRY_T entry;
2308 if (dir_acl != NULL && (conn->vfs_ops.sys_acl_get_entry(conn, dir_acl, SMB_ACL_FIRST_ENTRY, &entry) == 1))
2311 conn->vfs_ops.sys_acl_free_acl(conn, dir_acl);