2 Unix SMB/Netbios implementation.
4 SMB NT Security Descriptor / Unix permission conversion.
5 Copyright (C) Jeremy Allison 1994-2000
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 /****************************************************************************
25 Data structures representing the internal ACE format.
26 ****************************************************************************/
28 enum ace_owner
{UID_ACE
, GID_ACE
, WORLD_ACE
};
29 enum ace_attribute
{ALLOW_ACE
, DENY_ACE
}; /* Used for incoming NT ACLS. */
31 typedef union posix_id
{
37 typedef struct canon_ace
{
38 struct canon_ace
*next
, *prev
;
40 mode_t perms
; /* Only use S_I(R|W|X)USR mode bits here. */
42 enum ace_owner owner_type
;
43 enum ace_attribute attr
;
47 #define ALL_ACE_PERMS (S_IRUSR|S_IWUSR|S_IXUSR)
49 /****************************************************************************
50 Functions to manipulate the internal ACE format.
51 ****************************************************************************/
53 /****************************************************************************
54 Count a linked list of canonical ACE entries.
55 ****************************************************************************/
57 static size_t count_canon_ace_list( canon_ace
*list_head
)
62 for (ace
= list_head
; ace
; ace
= ace
->next
)
68 /****************************************************************************
69 Free a linked list of canonical ACE entries.
70 ****************************************************************************/
72 static void free_canon_ace_list( canon_ace
*list_head
)
75 canon_ace
*old_head
= list_head
;
76 DLIST_REMOVE(list_head
, list_head
);
81 /****************************************************************************
82 Function to duplicate a canon_ace entry.
83 ****************************************************************************/
85 static canon_ace
*dup_canon_ace( canon_ace
*src_ace
)
87 canon_ace
*dst_ace
= (canon_ace
*)malloc(sizeof(canon_ace
));
93 dst_ace
->prev
= dst_ace
->next
= NULL
;
97 /****************************************************************************
98 Print out a canon ace.
99 ****************************************************************************/
101 static void print_canon_ace(canon_ace
*pace
, int num
)
105 dbgtext( "canon_ace index %d. Type = %s ", num
, pace
->attr
== ALLOW_ACE
? "allow" : "deny" );
106 dbgtext( "SID = %s ", sid_to_string( str
, &pace
->sid
));
107 if (pace
->owner_type
== UID_ACE
) {
108 struct passwd
*pass
= sys_getpwuid(pace
->unix_ug
.uid
);
109 dbgtext( "uid %u (%s) ", (unsigned int)pace
->unix_ug
.uid
, pass
? pass
->pw_name
: "UNKNOWN");
110 } else if (pace
->owner_type
== GID_ACE
) {
111 struct group
*grp
= getgrgid(pace
->unix_ug
.gid
);
112 dbgtext( "gid %u (%s) ", (unsigned int)pace
->unix_ug
.gid
, grp
? grp
->gr_name
: "UNKNOWN");
115 switch (pace
->type
) {
117 dbgtext( "SMB_ACL_USER ");
119 case SMB_ACL_USER_OBJ
:
120 dbgtext( "SMB_ACL_USER_OBJ ");
123 dbgtext( "SMB_ACL_GROUP ");
125 case SMB_ACL_GROUP_OBJ
:
126 dbgtext( "SMB_ACL_GROUP_OBJ ");
129 dbgtext( "SMB_ACL_OTHER ");
133 dbgtext( "%c", pace
->perms
& S_IRUSR
? 'r' : '-');
134 dbgtext( "%c", pace
->perms
& S_IWUSR
? 'w' : '-');
135 dbgtext( "%c\n", pace
->perms
& S_IXUSR
? 'x' : '-');
138 /****************************************************************************
139 Print out a canon ace list.
140 ****************************************************************************/
142 static void print_canon_ace_list(const char *name
, canon_ace
*ace_list
)
146 if( DEBUGLVL( 10 )) {
147 dbgtext( "print_canon_ace_list: %s\n", name
);
148 for (;ace_list
; ace_list
= ace_list
->next
, count
++)
149 print_canon_ace(ace_list
, count
);
153 /****************************************************************************
154 Map POSIX ACL perms to canon_ace permissions (a mode_t containing only S_(R|W|X)USR bits).
155 ****************************************************************************/
157 static mode_t
convert_permset_to_mode_t(SMB_ACL_PERMSET_T permset
)
161 ret
|= (sys_acl_get_perm(permset
, SMB_ACL_READ
) ? S_IRUSR
: 0);
162 ret
|= (sys_acl_get_perm(permset
, SMB_ACL_WRITE
) ? S_IWUSR
: 0);
163 ret
|= (sys_acl_get_perm(permset
, SMB_ACL_EXECUTE
) ? S_IXUSR
: 0);
168 /****************************************************************************
169 Map generic UNIX permissions to canon_ace permissions (a mode_t containing only S_(R|W|X)USR bits).
170 ****************************************************************************/
172 static mode_t
unix_perms_to_acl_perms(mode_t mode
, int r_mask
, int w_mask
, int x_mask
)
186 /****************************************************************************
187 Map canon_ace permissions (a mode_t containing only S_(R|W|X)USR bits) to
188 an SMB_ACL_PERMSET_T.
189 ****************************************************************************/
191 static int map_acl_perms_to_permset(mode_t mode
, SMB_ACL_PERMSET_T
*p_permset
)
193 if (sys_acl_clear_perms(*p_permset
) == -1)
195 if (mode
& S_IRUSR
) {
196 if (sys_acl_add_perm(*p_permset
, SMB_ACL_READ
) == -1)
199 if (mode
& S_IWUSR
) {
200 if (sys_acl_add_perm(*p_permset
, SMB_ACL_WRITE
) == -1)
203 if (mode
& S_IXUSR
) {
204 if (sys_acl_add_perm(*p_permset
, SMB_ACL_EXECUTE
) == -1)
209 /****************************************************************************
210 Function to create owner and group SIDs from a SMB_STRUCT_STAT.
211 ****************************************************************************/
213 static void create_file_sids(SMB_STRUCT_STAT
*psbuf
, DOM_SID
*powner_sid
, DOM_SID
*pgroup_sid
)
215 uid_to_sid( powner_sid
, psbuf
->st_uid
);
216 gid_to_sid( pgroup_sid
, psbuf
->st_gid
);
219 /****************************************************************************
220 Merge aces with a common sid - if both are allow or deny, OR the permissions together and
221 delete the second one. If the first is deny, mask the permissions off and delete the allow
222 if the permissions become zero, delete the deny if the permissions are non zero.
223 ****************************************************************************/
225 static void merge_aces( canon_ace
**pp_list_head
)
227 canon_ace
*list_head
= *pp_list_head
;
228 canon_ace
*curr_ace_outer
;
229 canon_ace
*curr_ace_outer_next
;
232 * First, merge allow entries with identical SIDs, and deny entries
233 * with identical SIDs.
236 for (curr_ace_outer
= list_head
; curr_ace_outer
; curr_ace_outer
= curr_ace_outer_next
) {
238 canon_ace
*curr_ace_next
;
240 curr_ace_outer_next
= curr_ace_outer
->next
; /* Save the link in case we delete. */
242 for (curr_ace
= curr_ace_outer
->next
; curr_ace
; curr_ace
= curr_ace_next
) {
244 curr_ace_next
= curr_ace
->next
; /* Save the link in case of delete. */
246 if (sid_equal(&curr_ace
->sid
, &curr_ace_outer
->sid
) &&
247 (curr_ace
->attr
== curr_ace_outer
->attr
)) {
249 if( DEBUGLVL( 10 )) {
250 dbgtext("merge_aces: Merging ACE's\n");
251 print_canon_ace( curr_ace_outer
, 0);
252 print_canon_ace( curr_ace
, 0);
255 /* Merge two allow or two deny ACE's. */
257 curr_ace_outer
->perms
|= curr_ace
->perms
;
258 DLIST_REMOVE(list_head
, curr_ace
);
260 curr_ace_outer_next
= curr_ace_outer
->next
; /* We may have deleted the link. */
266 * Now go through and mask off allow permissions with deny permissions.
267 * We can delete either the allow or deny here as we know that each SID
268 * appears only once in the list.
271 for (curr_ace_outer
= list_head
; curr_ace_outer
; curr_ace_outer
= curr_ace_outer_next
) {
273 canon_ace
*curr_ace_next
;
275 curr_ace_outer_next
= curr_ace_outer
->next
; /* Save the link in case we delete. */
277 for (curr_ace
= curr_ace_outer
->next
; curr_ace
; curr_ace
= curr_ace_next
) {
279 curr_ace_next
= curr_ace
->next
; /* Save the link in case of delete. */
282 * Subtract ACE's with different entries. Due to the ordering constraints
283 * we've put on the ACL, we know the deny must be the first one.
286 if (sid_equal(&curr_ace
->sid
, &curr_ace_outer
->sid
) &&
287 (curr_ace_outer
->attr
== DENY_ACE
) && (curr_ace
->attr
== ALLOW_ACE
)) {
289 if( DEBUGLVL( 10 )) {
290 dbgtext("merge_aces: Masking ACE's\n");
291 print_canon_ace( curr_ace_outer
, 0);
292 print_canon_ace( curr_ace
, 0);
295 curr_ace
->perms
&= ~curr_ace_outer
->perms
;
297 if (curr_ace
->perms
== 0) {
300 * The deny overrides the allow. Remove the allow.
303 DLIST_REMOVE(list_head
, curr_ace
);
305 curr_ace_outer_next
= curr_ace_outer
->next
; /* We may have deleted the link. */
310 * Even after removing permissions, there
311 * are still allow permissions - delete the deny.
312 * It is safe to delete the deny here,
313 * as we are guarenteed by the deny first
314 * ordering that all the deny entries for
315 * this SID have already been merged into one
316 * before we can get to an allow ace.
319 DLIST_REMOVE(list_head
, curr_ace_outer
);
320 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.\n"));
446 * Don't immediately fail if the group sid cannot be validated.
447 * This may be an owner chown only set.
450 if (security_info_sent
& GROUP_SECURITY_INFORMATION
) {
451 sid_copy(&grp_sid
, psd
->grp_sid
);
452 if (!sid_to_gid( &grp_sid
, pgrp
, &sid_type
))
453 DEBUG(3,("unpack_nt_owners: unable to validate group sid.\n"));
456 DEBUG(5,("unpack_nt_owners: owner_sids validated.\n"));
461 /****************************************************************************
462 Ensure the enforced permissions for this share apply.
463 ****************************************************************************/
465 static mode_t
apply_default_perms(files_struct
*fsp
, mode_t perms
, mode_t type
)
467 int snum
= SNUM(fsp
->conn
);
468 mode_t and_bits
= (mode_t
)0;
469 mode_t or_bits
= (mode_t
)0;
471 /* Get the initial bits to apply. */
473 if (fsp
->is_directory
) {
474 and_bits
= lp_dir_security_mask(snum
);
475 or_bits
= lp_force_dir_security_mode(snum
);
477 and_bits
= lp_security_mask(snum
);
478 or_bits
= lp_force_security_mode(snum
);
481 /* Now bounce them into the S_USR space. */
484 and_bits
= unix_perms_to_acl_perms(and_bits
, S_IRUSR
, S_IWUSR
, S_IXUSR
);
485 or_bits
= unix_perms_to_acl_perms(or_bits
, S_IRUSR
, S_IWUSR
, S_IXUSR
);
488 and_bits
= unix_perms_to_acl_perms(and_bits
, S_IRGRP
, S_IWGRP
, S_IXGRP
);
489 or_bits
= unix_perms_to_acl_perms(or_bits
, S_IRGRP
, S_IWGRP
, S_IXGRP
);
492 and_bits
= unix_perms_to_acl_perms(and_bits
, S_IROTH
, S_IWOTH
, S_IXOTH
);
493 or_bits
= unix_perms_to_acl_perms(or_bits
, S_IROTH
, S_IWOTH
, S_IXOTH
);
497 return ((perms
& and_bits
)|or_bits
);
500 /****************************************************************************
501 A well formed POSIX file or default ACL has at least 3 entries, a
502 SMB_ACL_USER_OBJ, SMB_ACL_GROUP_OBJ, SMB_ACL_OTHER_OBJ.
503 In addition, the owner must always have at least read access.
504 When using this call on get_acl, the pst struct is valid and contains
505 the mode of the file. When using this call on set_acl, the pst struct has
506 been modified to have a mode containing the default for this file or directory
508 ****************************************************************************/
510 static BOOL
ensure_canon_entry_valid(canon_ace
**pp_ace
,
512 DOM_SID
*pfile_owner_sid
,
513 DOM_SID
*pfile_grp_sid
,
514 SMB_STRUCT_STAT
*pst
,
517 extern DOM_SID global_sid_World
;
519 BOOL got_user
= False
;
520 BOOL got_grp
= False
;
521 BOOL got_other
= False
;
523 for (pace
= *pp_ace
; pace
; pace
= pace
->next
) {
524 if (pace
->type
== SMB_ACL_USER_OBJ
) {
527 /* Ensure owner has read access. */
528 pace
->perms
|= S_IRUSR
;
529 if (fsp
->is_directory
)
530 pace
->perms
|= (S_IWUSR
|S_IXUSR
);
533 * Ensure create mask/force create mode is respected on set.
536 pace
->perms
= apply_default_perms(fsp
, pace
->perms
, S_IRUSR
);
540 } else if (pace
->type
== SMB_ACL_GROUP_OBJ
) {
543 * Ensure create mask/force create mode is respected on set.
547 pace
->perms
= apply_default_perms(fsp
, pace
->perms
, S_IRGRP
);
549 } else if (pace
->type
== SMB_ACL_OTHER
) {
552 * Ensure create mask/force create mode is respected on set.
556 pace
->perms
= apply_default_perms(fsp
, pace
->perms
, S_IROTH
);
562 if ((pace
= (canon_ace
*)malloc(sizeof(canon_ace
))) == NULL
) {
563 DEBUG(0,("ensure_canon_entry_valid: malloc fail.\n"));
568 pace
->type
= SMB_ACL_USER_OBJ
;
569 pace
->owner_type
= UID_ACE
;
570 pace
->unix_ug
.uid
= pst
->st_uid
;
571 pace
->sid
= *pfile_owner_sid
;
572 pace
->perms
= unix_perms_to_acl_perms(pst
->st_mode
, S_IRUSR
, S_IWUSR
, S_IXUSR
);
573 pace
->attr
= ALLOW_ACE
;
575 DLIST_ADD(*pp_ace
, pace
);
579 if ((pace
= (canon_ace
*)malloc(sizeof(canon_ace
))) == NULL
) {
580 DEBUG(0,("ensure_canon_entry_valid: malloc fail.\n"));
585 pace
->type
= SMB_ACL_GROUP_OBJ
;
586 pace
->owner_type
= GID_ACE
;
587 pace
->unix_ug
.uid
= pst
->st_gid
;
588 pace
->sid
= *pfile_grp_sid
;
589 pace
->perms
= unix_perms_to_acl_perms(pst
->st_mode
, S_IRGRP
, S_IWGRP
, S_IXGRP
);
590 pace
->attr
= ALLOW_ACE
;
592 DLIST_ADD(*pp_ace
, pace
);
596 if ((pace
= (canon_ace
*)malloc(sizeof(canon_ace
))) == NULL
) {
597 DEBUG(0,("ensure_canon_entry_valid: malloc fail.\n"));
602 pace
->type
= SMB_ACL_OTHER
;
603 pace
->owner_type
= WORLD_ACE
;
604 pace
->unix_ug
.world
= -1;
605 pace
->sid
= global_sid_World
;
606 pace
->perms
= unix_perms_to_acl_perms(pst
->st_mode
, S_IROTH
, S_IWOTH
, S_IXOTH
);
607 pace
->attr
= ALLOW_ACE
;
609 DLIST_ADD(*pp_ace
, pace
);
615 /****************************************************************************
616 Unpack a SEC_DESC into two canonical ace lists.
617 ****************************************************************************/
619 static BOOL
create_canon_ace_lists(files_struct
*fsp
,
620 DOM_SID
*pfile_owner_sid
,
621 DOM_SID
*pfile_grp_sid
,
622 canon_ace
**ppfile_ace
, canon_ace
**ppdir_ace
,
625 extern DOM_SID global_sid_World
;
626 extern struct generic_mapping file_generic_mapping
;
627 BOOL all_aces_are_inherit_only
= (fsp
->is_directory
? True
: False
);
628 canon_ace
*file_ace
= NULL
;
629 canon_ace
*dir_ace
= NULL
;
630 canon_ace
*tmp_ace
= NULL
;
631 canon_ace
*current_ace
= NULL
;
632 BOOL got_dir_allow
= False
;
633 BOOL got_file_allow
= False
;
639 for(i
= 0; i
< dacl
->num_aces
; i
++) {
640 enum SID_NAME_USE sid_type
;
641 SEC_ACE
*psa
= &dacl
->ace
[i
];
643 if((psa
->type
!= SEC_ACE_TYPE_ACCESS_ALLOWED
) && (psa
->type
!= SEC_ACE_TYPE_ACCESS_DENIED
)) {
644 free_canon_ace_list(file_ace
);
645 free_canon_ace_list(dir_ace
);
646 DEBUG(3,("create_canon_ace_lists: unable to set anything but an ALLOW or DENY ACE.\n"));
651 * The security mask may be UNIX_ACCESS_NONE which should map into
652 * no permissions (we overload the WRITE_OWNER bit for this) or it
653 * should be one of the ALL/EXECUTE/READ/WRITE bits. Arrange for this
654 * to be so. Any other bits override the UNIX_ACCESS_NONE bit.
658 * Convert GENERIC bits to specific bits.
661 se_map_generic(&psa
->info
.mask
, &file_generic_mapping
);
663 psa
->info
.mask
&= (UNIX_ACCESS_NONE
|FILE_ALL_ACCESS
);
665 if(psa
->info
.mask
!= UNIX_ACCESS_NONE
)
666 psa
->info
.mask
&= ~UNIX_ACCESS_NONE
;
669 * Create a cannon_ace entry representing this NT DACL ACE.
672 if ((current_ace
= (canon_ace
*)malloc(sizeof(canon_ace
))) == NULL
) {
673 free_canon_ace_list(file_ace
);
674 free_canon_ace_list(dir_ace
);
675 DEBUG(0,("create_canon_ace_lists: malloc fail.\n"));
679 ZERO_STRUCTP(current_ace
);
681 sid_copy(¤t_ace
->sid
, &psa
->sid
);
684 * Try and work out if the SID is a user or group
685 * as we need to flag these differently for POSIX.
688 if( sid_equal(¤t_ace
->sid
, &global_sid_World
)) {
689 current_ace
->owner_type
= WORLD_ACE
;
690 current_ace
->unix_ug
.world
= -1;
691 } else if (sid_to_uid( ¤t_ace
->sid
, ¤t_ace
->unix_ug
.uid
, &sid_type
)) {
692 current_ace
->owner_type
= UID_ACE
;
693 } else if (sid_to_gid( ¤t_ace
->sid
, ¤t_ace
->unix_ug
.gid
, &sid_type
)) {
694 current_ace
->owner_type
= GID_ACE
;
698 free_canon_ace_list(file_ace
);
699 free_canon_ace_list(dir_ace
);
701 DEBUG(0,("create_canon_ace_lists: unable to map SID %s to uid or gid.\n",
702 sid_to_string(str
, ¤t_ace
->sid
) ));
707 * Map the given NT permissions into a UNIX mode_t containing only
708 * S_I(R|W|X)USR bits.
711 current_ace
->perms
|= map_nt_perms( psa
->info
, S_IRUSR
);
712 current_ace
->attr
= (psa
->type
== SEC_ACE_TYPE_ACCESS_ALLOWED
) ? ALLOW_ACE
: DENY_ACE
;
715 * Now note what kind of a POSIX ACL this should map to.
718 if(sid_equal(¤t_ace
->sid
, pfile_owner_sid
)) {
720 current_ace
->type
= SMB_ACL_USER_OBJ
;
722 } else if( sid_equal(¤t_ace
->sid
, pfile_grp_sid
)) {
724 current_ace
->type
= SMB_ACL_GROUP_OBJ
;
726 } else if( sid_equal(¤t_ace
->sid
, &global_sid_World
)) {
728 current_ace
->type
= SMB_ACL_OTHER
;
732 * Could be a SMB_ACL_USER or SMB_ACL_GROUP. Check by
733 * looking at owner_type.
736 current_ace
->type
= (current_ace
->owner_type
== UID_ACE
) ? SMB_ACL_USER
: SMB_ACL_GROUP
;
740 * Now add the created ace to either the file list, the directory
741 * list, or both. We *MUST* preserve the order here (hence we use
742 * DLIST_ADD_END) as NT ACLs are order dependent.
745 if (fsp
->is_directory
) {
748 * We can only add to the default POSIX ACE list if the ACE is
749 * designed to be inherited by both files and directories.
752 if ((psa
->flags
& (SEC_ACE_FLAG_OBJECT_INHERIT
|SEC_ACE_FLAG_CONTAINER_INHERIT
)) ==
753 (SEC_ACE_FLAG_OBJECT_INHERIT
|SEC_ACE_FLAG_CONTAINER_INHERIT
)) {
755 DLIST_ADD_END(dir_ace
, current_ace
, tmp_ace
);
758 * Note if this was an allow ace. We can't process
759 * any further deny ace's after this.
762 if (current_ace
->attr
== ALLOW_ACE
)
763 got_dir_allow
= True
;
765 if ((current_ace
->attr
== DENY_ACE
) && got_dir_allow
) {
766 DEBUG(0,("create_canon_ace_lists: malformed ACL in inheritable ACL ! \
767 Deny entry after Allow entry. Failing to set on file %s.\n", fsp
->fsp_name
));
768 free_canon_ace_list(file_ace
);
769 free_canon_ace_list(dir_ace
);
774 if( DEBUGLVL( 10 )) {
775 dbgtext("create_canon_ace_lists: adding dir ACL:\n");
776 print_canon_ace( current_ace
, 0);
780 * If this is not an inherit only ACE we need to add a duplicate
784 if (!(psa
->flags
& SEC_ACE_FLAG_INHERIT_ONLY
)) {
785 canon_ace
*dup_ace
= dup_canon_ace(current_ace
);
788 DEBUG(0,("create_canon_ace_lists: malloc fail !\n"));
789 free_canon_ace_list(file_ace
);
790 free_canon_ace_list(dir_ace
);
794 current_ace
= dup_ace
;
802 * Only add to the file ACL if not inherit only.
805 if (!(psa
->flags
& SEC_ACE_FLAG_INHERIT_ONLY
)) {
806 DLIST_ADD_END(file_ace
, current_ace
, tmp_ace
);
809 * Note if this was an allow ace. We can't process
810 * any further deny ace's after this.
813 if (current_ace
->attr
== ALLOW_ACE
)
814 got_file_allow
= True
;
816 if ((current_ace
->attr
== DENY_ACE
) && got_file_allow
) {
817 DEBUG(0,("create_canon_ace_lists: malformed ACL in file ACL ! \
818 Deny entry after Allow entry. Failing to set on file %s.\n", fsp
->fsp_name
));
819 free_canon_ace_list(file_ace
);
820 free_canon_ace_list(dir_ace
);
825 if( DEBUGLVL( 10 )) {
826 dbgtext("create_canon_ace_lists: adding file ACL:\n");
827 print_canon_ace( current_ace
, 0);
829 all_aces_are_inherit_only
= False
;
834 * Free if ACE was not added.
841 if (fsp
->is_directory
&& all_aces_are_inherit_only
) {
843 * Windows 2000 is doing one of these weird 'inherit acl'
844 * traverses to conserve NTFS ACL resources. Just pretend
845 * there was no DACL sent. JRA.
848 DEBUG(10,("create_canon_ace_lists: Win2k inherit acl traverse. Ignoring DACL.\n"));
849 free_canon_ace_list(file_ace
);
850 free_canon_ace_list(dir_ace
);
855 *ppfile_ace
= file_ace
;
856 *ppdir_ace
= dir_ace
;
861 /****************************************************************************
862 Check if a given uid/SID is in a group gid/SID. This is probably very
863 expensive and will need optimisation. A *lot* of optimisation :-). JRA.
864 ****************************************************************************/
866 static BOOL
uid_entry_in_group( canon_ace
*uid_ace
, canon_ace
*group_ace
)
868 extern DOM_SID global_sid_World
;
869 struct passwd
*pass
= NULL
;
870 struct group
*gptr
= NULL
;
872 /* "Everyone" always matches every uid. */
874 if (sid_equal(&group_ace
->sid
, &global_sid_World
))
877 if (!(pass
= sys_getpwuid(uid_ace
->unix_ug
.uid
)))
880 if (!(gptr
= getgrgid(group_ace
->unix_ug
.gid
)))
884 * Due to the winbind interfaces we need to do this via names,
888 return user_in_group_list(pass
->pw_name
, gptr
->gr_name
);
891 /****************************************************************************
892 ASCII art time again... JRA :-).
894 We have 3 cases to process when moving from an NT ACL to a POSIX ACL. Firstly,
895 we insist the ACL is in canonical form (ie. all DENY entries preceede ALLOW
896 entries). Secondly, the merge code has ensured that all duplicate SID entries for
897 allow or deny have been merged, so the same SID can only appear once in the deny
898 list or once in the allow list.
900 We then process as follows :
902 ---------------------------------------------------------------------------
903 First pass - look for a Everyone DENY entry.
905 If it is deny all (rwx) trunate the list at this point.
906 Else, walk the list from this point and use the deny permissions of this
907 entry as a mask on all following allow entries. Finally, delete
908 the Everyone DENY entry (we have applied it to everything possible).
910 In addition, in this pass we remove any DENY entries that have
911 no permissions (ie. they are a DENY nothing).
912 ---------------------------------------------------------------------------
913 Second pass - only deal with deny user entries.
915 DENY user1 (perms XXX)
918 for all following allow group entries where user1 is in group
919 new_perms |= group_perms;
921 user1 entry perms = new_perms & ~ XXX;
923 Convert the deny entry to an allow entry with the new perms and
924 push to the end of the list. Note if the user was in no groups
925 this maps to a specific allow nothing entry for this user.
927 The common case from the NT ACL choser (userX deny all) is
928 optimised so we don't do the group lookup - we just map to
929 an allow nothing entry.
931 What we're doing here is inferring the allow permissions the
932 person setting the ACE on user1 wanted by looking at the allow
933 permissions on the groups the user is currently in. This will
934 be a snapshot, depending on group membership but is the best
935 we can do and has the advantage of failing closed rather than
937 ---------------------------------------------------------------------------
938 Third pass - only deal with deny group entries.
940 DENY group1 (perms XXX)
942 for all following allow user entries where user is in group1
943 user entry perms = user entry perms & ~ XXX;
945 If there is a group Everyone allow entry with permissions YYY,
946 convert the group1 entry to an allow entry and modify its
949 new_perms = YYY & ~ XXX
951 and push to the end of the list.
953 If there is no group Everyone allow entry then convert the
954 group1 entry to a allow nothing entry and push to the end of the list.
956 Note that the common case from the NT ACL choser (groupX deny all)
957 cannot be optimised here as we need to modify user entries who are
958 in the group to change them to a deny all also.
960 What we're doing here is modifying the allow permissions of
961 user entries (which are more specific in POSIX ACLs) to mask
962 out the explicit deny set on the group they are in. This will
963 be a snapshot depending on current group membership but is the
964 best we can do and has the advantage of failing closed rather
966 ---------------------------------------------------------------------------
968 Note we *MUST* do the deny user pass first as this will convert deny user
969 entries into allow user entries which can then be processed by the deny
972 The above algorithm took a *lot* of thinking about - hence this
973 explaination :-). JRA.
974 ****************************************************************************/
976 /****************************************************************************
977 Process a canon_ace list entries. This is very complex code. We need
978 to go through and remove the "deny" permissions from any allow entry that matches
979 the id of this entry. We have already refused any NT ACL that wasn't in correct
980 order (DENY followed by ALLOW). If any allow entry ends up with zero permissions,
981 we just remove it (to fail safe). We have already removed any duplicate ace
982 entries. Treat an "Everyone" DENY_ACE as a special case - use it to mask all
984 ****************************************************************************/
986 static void process_deny_list( canon_ace
**pp_ace_list
)
988 extern DOM_SID global_sid_World
;
989 canon_ace
*ace_list
= *pp_ace_list
;
990 canon_ace
*curr_ace
= NULL
;
991 canon_ace
*curr_ace_next
= NULL
;
993 /* Pass 1 above - look for an Everyone, deny entry. */
995 for (curr_ace
= ace_list
; curr_ace
; curr_ace
= curr_ace_next
) {
996 canon_ace
*allow_ace_p
;
998 curr_ace_next
= curr_ace
->next
; /* So we can't lose the link. */
1000 if (curr_ace
->attr
!= DENY_ACE
)
1003 if (curr_ace
->perms
== (mode_t
)0) {
1005 /* Deny nothing entry - delete. */
1007 DLIST_REMOVE(ace_list
, curr_ace
);
1011 if (!sid_equal(&curr_ace
->sid
, &global_sid_World
))
1014 /* JRATEST - assert. */
1015 SMB_ASSERT(curr_ace
->owner_type
== WORLD_ACE
);
1017 if (curr_ace
->perms
== ALL_ACE_PERMS
) {
1020 * Optimisation. This is a DENY_ALL to Everyone. Truncate the
1021 * list at this point including this entry.
1024 canon_ace
*prev_entry
= curr_ace
->prev
;
1026 free_canon_ace_list( curr_ace
);
1028 prev_entry
->next
= NULL
;
1030 /* We deleted the entire list. */
1036 for (allow_ace_p
= curr_ace
->next
; allow_ace_p
; allow_ace_p
= allow_ace_p
->next
) {
1039 * Only mask off allow entries.
1042 if (allow_ace_p
->attr
!= ALLOW_ACE
)
1045 allow_ace_p
->perms
&= ~curr_ace
->perms
;
1049 * Now it's been applied, remove it.
1052 DLIST_REMOVE(ace_list
, curr_ace
);
1055 /* Pass 2 above - deal with deny user entries. */
1057 for (curr_ace
= ace_list
; curr_ace
; curr_ace
= curr_ace_next
) {
1058 mode_t new_perms
= (mode_t
)0;
1059 canon_ace
*allow_ace_p
;
1062 curr_ace_next
= curr_ace
->next
; /* So we can't lose the link. */
1064 if (curr_ace
->attr
!= DENY_ACE
)
1067 if (curr_ace
->owner_type
!= UID_ACE
)
1070 if (curr_ace
->perms
== ALL_ACE_PERMS
) {
1073 * Optimisation - this is a deny everything to this user.
1074 * Convert to an allow nothing and push to the end of the list.
1077 curr_ace
->attr
= ALLOW_ACE
;
1078 curr_ace
->perms
= (mode_t
)0;
1079 DLIST_DEMOTE(ace_list
, curr_ace
, tmp_ace
);
1083 for (allow_ace_p
= curr_ace
->next
; allow_ace_p
; allow_ace_p
= allow_ace_p
->next
) {
1085 if (allow_ace_p
->attr
!= ALLOW_ACE
)
1088 /* We process GID_ACE and WORLD_ACE entries only. */
1090 if (allow_ace_p
->owner_type
== UID_ACE
)
1093 if (uid_entry_in_group( curr_ace
, allow_ace_p
))
1094 new_perms
|= allow_ace_p
->perms
;
1098 * Convert to a allow entry, modify the perms and push to the end
1102 curr_ace
->attr
= ALLOW_ACE
;
1103 curr_ace
->perms
= (new_perms
& ~curr_ace
->perms
);
1104 DLIST_DEMOTE(ace_list
, curr_ace
, tmp_ace
);
1107 /* Pass 3 above - deal with deny group entries. */
1109 for (curr_ace
= ace_list
; curr_ace
; curr_ace
= curr_ace_next
) {
1111 canon_ace
*allow_ace_p
;
1112 canon_ace
*allow_everyone_p
= NULL
;
1114 curr_ace_next
= curr_ace
->next
; /* So we can't lose the link. */
1116 if (curr_ace
->attr
!= DENY_ACE
)
1119 if (curr_ace
->owner_type
!= GID_ACE
)
1122 for (allow_ace_p
= curr_ace
->next
; allow_ace_p
; allow_ace_p
= allow_ace_p
->next
) {
1124 if (allow_ace_p
->attr
!= ALLOW_ACE
)
1127 /* Store a pointer to the Everyone allow, if it exists. */
1128 if (allow_ace_p
->owner_type
== WORLD_ACE
)
1129 allow_everyone_p
= allow_ace_p
;
1131 /* We process UID_ACE entries only. */
1133 if (allow_ace_p
->owner_type
!= UID_ACE
)
1136 /* Mask off the deny group perms. */
1138 if (uid_entry_in_group( allow_ace_p
, curr_ace
))
1139 allow_ace_p
->perms
&= ~curr_ace
->perms
;
1143 * Convert the deny to an allow with the correct perms and
1144 * push to the end of the list.
1147 curr_ace
->attr
= ALLOW_ACE
;
1148 if (allow_everyone_p
)
1149 curr_ace
->perms
= allow_everyone_p
->perms
& ~curr_ace
->perms
;
1151 curr_ace
->perms
= (mode_t
)0;
1152 DLIST_DEMOTE(ace_list
, curr_ace
, tmp_ace
);
1156 *pp_ace_list
= ace_list
;
1159 /****************************************************************************
1160 Create a default mode that will be used if a security descriptor entry has
1161 no user/group/world entries.
1162 ****************************************************************************/
1164 static mode_t
create_default_mode(files_struct
*fsp
, BOOL interitable_mode
)
1166 int snum
= SNUM(fsp
->conn
);
1167 mode_t and_bits
= (mode_t
)0;
1168 mode_t or_bits
= (mode_t
)0;
1169 mode_t mode
= interitable_mode
? unix_mode( fsp
->conn
, FILE_ATTRIBUTE_ARCHIVE
, fsp
->fsp_name
) : S_IRUSR
;
1171 if (fsp
->is_directory
)
1172 mode
|= (S_IWUSR
|S_IXUSR
);
1175 * Now AND with the create mode/directory mode bits then OR with the
1176 * force create mode/force directory mode bits.
1179 if (fsp
->is_directory
) {
1180 and_bits
= lp_dir_security_mask(snum
);
1181 or_bits
= lp_force_dir_security_mode(snum
);
1183 and_bits
= lp_security_mask(snum
);
1184 or_bits
= lp_force_security_mode(snum
);
1187 return ((mode
& and_bits
)|or_bits
);
1190 /****************************************************************************
1191 Unpack a SEC_DESC into two canonical ace lists. We don't depend on this
1193 ****************************************************************************/
1195 static BOOL
unpack_canon_ace(files_struct
*fsp
,
1196 SMB_STRUCT_STAT
*pst
,
1197 DOM_SID
*pfile_owner_sid
,
1198 DOM_SID
*pfile_grp_sid
,
1199 canon_ace
**ppfile_ace
, canon_ace
**ppdir_ace
,
1200 uint32 security_info_sent
, SEC_DESC
*psd
)
1202 canon_ace
*file_ace
= NULL
;
1203 canon_ace
*dir_ace
= NULL
;
1208 if(security_info_sent
== 0) {
1209 DEBUG(0,("unpack_canon_ace: no security info sent !\n"));
1214 * If no DACL then this is a chown only security descriptor.
1217 if(!(security_info_sent
& DACL_SECURITY_INFORMATION
) || !psd
->dacl
)
1221 * Now go through the DACL and create the canon_ace lists.
1224 if (!create_canon_ace_lists( fsp
, pfile_owner_sid
, pfile_grp_sid
,
1225 &file_ace
, &dir_ace
, psd
->dacl
))
1228 if ((file_ace
== NULL
) && (dir_ace
== NULL
)) {
1229 /* W2K traverse DACL set - ignore. */
1234 * Go through the canon_ace list and merge entries
1235 * belonging to identical users of identical allow or deny type.
1236 * We can do this as all deny entries come first, followed by
1237 * all allow entries (we have mandated this before accepting this acl).
1240 print_canon_ace_list( "file ace - before merge", file_ace
);
1241 merge_aces( &file_ace
);
1243 print_canon_ace_list( "dir ace - before merge", dir_ace
);
1244 merge_aces( &dir_ace
);
1247 * NT ACLs are order dependent. Go through the acl lists and
1248 * process DENY entries by masking the allow entries.
1251 print_canon_ace_list( "file ace - before deny", file_ace
);
1252 process_deny_list( &file_ace
);
1254 print_canon_ace_list( "dir ace - before deny", dir_ace
);
1255 process_deny_list( &dir_ace
);
1258 * A well formed POSIX file or default ACL has at least 3 entries, a
1259 * SMB_ACL_USER_OBJ, SMB_ACL_GROUP_OBJ, SMB_ACL_OTHER_OBJ
1260 * and optionally a mask entry. Ensure this is the case.
1263 print_canon_ace_list( "file ace - before valid", file_ace
);
1266 * A default 3 element mode entry for a file should be r-- --- ---.
1267 * A default 3 element mode entry for a directory should be rwx --- ---.
1270 pst
->st_mode
= create_default_mode(fsp
, False
);
1272 if (!ensure_canon_entry_valid(&file_ace
, fsp
, pfile_owner_sid
, pfile_grp_sid
, pst
, True
)) {
1273 free_canon_ace_list(file_ace
);
1274 free_canon_ace_list(dir_ace
);
1278 print_canon_ace_list( "dir ace - before valid", dir_ace
);
1281 * A default inheritable 3 element mode entry for a directory should be the
1282 * mode Samba will use to create a file within. Ensure user rwx bits are set if
1286 pst
->st_mode
= create_default_mode(fsp
, True
);
1288 if (!ensure_canon_entry_valid(&dir_ace
, fsp
, pfile_owner_sid
, pfile_grp_sid
, pst
, True
)) {
1289 free_canon_ace_list(file_ace
);
1290 free_canon_ace_list(dir_ace
);
1294 print_canon_ace_list( "file ace - return", file_ace
);
1295 print_canon_ace_list( "dir ace - return", dir_ace
);
1297 *ppfile_ace
= file_ace
;
1298 *ppdir_ace
= dir_ace
;
1303 /******************************************************************************
1304 When returning permissions, try and fit NT display
1305 semantics if possible. Note the the canon_entries here must have been malloced.
1306 The list format should be - first entry = owner, followed by group and other user
1307 entries, last entry = other.
1309 Note that this doesn't exactly match the NT semantics for an ACL. As POSIX entries
1310 are not ordered, and match on the most specific entry rather than walking a list,
1311 then a simple POSIX permission of rw-r--r-- should really map to 6 entries,
1313 Entry 0: owner : deny all except read and write.
1314 Entry 1: group : deny all except read.
1315 Entry 2: Everyone : deny all except read.
1316 Entry 3: owner : allow read and write.
1317 Entry 4: group : allow read.
1318 Entry 5: Everyone : allow read.
1320 But NT cannot display this in their ACL editor !
1321 ********************************************************************************/
1323 static void arrange_posix_perms( char *filename
, canon_ace
**pp_list_head
)
1325 canon_ace
*list_head
= *pp_list_head
;
1326 canon_ace
*owner_ace
= NULL
;
1327 canon_ace
*other_ace
= NULL
;
1328 canon_ace
*ace
= NULL
;
1330 for (ace
= list_head
; ace
; ace
= ace
->next
) {
1331 if (ace
->type
== SMB_ACL_USER_OBJ
)
1333 else if (ace
->type
== SMB_ACL_OTHER
) {
1334 /* Last ace - this is "other" */
1339 if (!owner_ace
|| !other_ace
) {
1340 DEBUG(0,("arrange_posix_perms: Invalid POSIX permissions for file %s, missing owner or other.\n",
1346 * The POSIX algorithm applies to owner first, and other last,
1347 * so ensure they are arranged in this order.
1351 DLIST_PROMOTE(list_head
, owner_ace
);
1355 DLIST_DEMOTE(list_head
, other_ace
, ace
);
1358 /* We have probably changed the head of the list. */
1360 *pp_list_head
= list_head
;
1363 /****************************************************************************
1364 Create a linked list of canonical ACE entries.
1365 ****************************************************************************/
1367 static canon_ace
*canonicalise_acl( files_struct
*fsp
, SMB_ACL_T posix_acl
, SMB_STRUCT_STAT
*psbuf
,
1368 DOM_SID
*powner
, DOM_SID
*pgroup
)
1370 extern DOM_SID global_sid_World
;
1371 mode_t acl_mask
= (S_IRUSR
|S_IWUSR
|S_IXUSR
);
1372 canon_ace
*list_head
= NULL
;
1373 canon_ace
*ace
= NULL
;
1374 canon_ace
*next_ace
= NULL
;
1375 int entry_id
= SMB_ACL_FIRST_ENTRY
;
1376 SMB_ACL_ENTRY_T entry
;
1379 while ( posix_acl
&& (sys_acl_get_entry(posix_acl
, entry_id
, &entry
) == 1)) {
1380 SMB_ACL_TAG_T tagtype
;
1381 SMB_ACL_PERMSET_T permset
;
1384 enum ace_owner owner_type
;
1387 if (entry_id
== SMB_ACL_FIRST_ENTRY
)
1388 entry_id
= SMB_ACL_NEXT_ENTRY
;
1390 /* Is this a MASK entry ? */
1391 if (sys_acl_get_tag_type(entry
, &tagtype
) == -1)
1394 if (sys_acl_get_permset(entry
, &permset
) == -1)
1397 /* Decide which SID to use based on the ACL type. */
1399 case SMB_ACL_USER_OBJ
:
1400 /* Get the SID from the owner. */
1401 uid_to_sid( &sid
, psbuf
->st_uid
);
1402 unix_ug
.uid
= psbuf
->st_uid
;
1403 owner_type
= UID_ACE
;
1407 uid_t
*puid
= (uid_t
*)sys_acl_get_qualifier(entry
);
1409 DEBUG(0,("canonicalise_acl: Failed to get uid.\n"));
1412 uid_to_sid( &sid
, *puid
);
1413 unix_ug
.uid
= *puid
;
1414 owner_type
= UID_ACE
;
1415 sys_acl_free_qualifier((void *)puid
);
1418 case SMB_ACL_GROUP_OBJ
:
1419 /* Get the SID from the owning group. */
1420 gid_to_sid( &sid
, psbuf
->st_gid
);
1421 unix_ug
.gid
= psbuf
->st_gid
;
1422 owner_type
= GID_ACE
;
1426 gid_t
*pgid
= (gid_t
*)sys_acl_get_qualifier(entry
);
1428 DEBUG(0,("canonicalise_acl: Failed to get gid.\n"));
1431 gid_to_sid( &sid
, *pgid
);
1432 unix_ug
.gid
= *pgid
;
1433 owner_type
= GID_ACE
;
1434 sys_acl_free_qualifier((void *)pgid
);
1438 acl_mask
= convert_permset_to_mode_t(permset
);
1439 continue; /* Don't count the mask as an entry. */
1441 /* Use the Everyone SID */
1442 sid
= global_sid_World
;
1444 owner_type
= WORLD_ACE
;
1447 DEBUG(0,("canonicalise_acl: Unknown tagtype %u\n", (unsigned int)tagtype
));
1452 * Add this entry to the list.
1455 if ((ace
= (canon_ace
*)malloc(sizeof(canon_ace
))) == NULL
)
1459 ace
->type
= tagtype
;
1460 ace
->perms
= convert_permset_to_mode_t(permset
);
1461 ace
->attr
= ALLOW_ACE
;
1463 ace
->unix_ug
= unix_ug
;
1464 ace
->owner_type
= owner_type
;
1466 DLIST_ADD(list_head
, ace
);
1470 * This next call will ensure we have at least a user/group/world set.
1473 if (!ensure_canon_entry_valid(&list_head
, fsp
, powner
, pgroup
, psbuf
, False
))
1476 arrange_posix_perms(fsp
->fsp_name
,&list_head
);
1479 * Now go through the list, masking the permissions with the
1480 * acl_mask. Ensure all DENY Entries are at the start of the list.
1483 DEBUG(10,("canonicalise_acl: ace entries before arrange :\n"));
1485 for ( ace_count
= 0, ace
= list_head
; ace
; ace
= next_ace
, ace_count
++) {
1486 next_ace
= ace
->next
;
1488 /* Masks are only applied to entries other than USER_OBJ and OTHER. */
1489 if (ace
->type
!= SMB_ACL_OTHER
&& ace
->type
!= SMB_ACL_USER_OBJ
)
1490 ace
->perms
&= acl_mask
;
1492 if (ace
->perms
== 0) {
1493 DLIST_PROMOTE(list_head
, ace
);
1496 if( DEBUGLVL( 10 ) ) {
1497 print_canon_ace(ace
, ace_count
);
1501 print_canon_ace_list( "canonicalise_acl: ace entries after arrange", list_head
);
1507 free_canon_ace_list(list_head
);
1511 /****************************************************************************
1512 Attempt to apply an ACL to a file or directory.
1513 ****************************************************************************/
1515 static BOOL
set_canon_ace_list(files_struct
*fsp
, canon_ace
*the_ace
, BOOL default_ace
, BOOL
*pacl_set_support
)
1518 SMB_ACL_T the_acl
= sys_acl_init((int)count_canon_ace_list(the_ace
) + 1);
1521 SMB_ACL_ENTRY_T mask_entry
;
1522 SMB_ACL_PERMSET_T mask_permset
;
1523 SMB_ACL_TYPE_T the_acl_type
= (default_ace
? SMB_ACL_TYPE_DEFAULT
: SMB_ACL_TYPE_ACCESS
);
1525 if (the_acl
== NULL
) {
1527 if (errno
!= ENOSYS
) {
1529 * Only print this error message if we have some kind of ACL
1530 * support that's not working. Otherwise we would always get this.
1532 DEBUG(0,("set_canon_ace_list: Unable to init %s ACL. (%s)\n",
1533 default_ace
? "default" : "file", strerror(errno
) ));
1535 *pacl_set_support
= False
;
1539 for (i
= 0, p_ace
= the_ace
; p_ace
; p_ace
= p_ace
->next
, i
++ ) {
1540 SMB_ACL_ENTRY_T the_entry
;
1541 SMB_ACL_PERMSET_T the_permset
;
1544 * Get the entry for this ACE.
1547 if (sys_acl_create_entry( &the_acl
, &the_entry
) == -1) {
1548 DEBUG(0,("set_canon_ace_list: Failed to create entry %d. (%s)\n",
1549 i
, strerror(errno
) ));
1554 * Ok - we now know the ACL calls should be working, don't
1555 * allow fallback to chmod.
1558 *pacl_set_support
= True
;
1561 * Initialise the entry from the canon_ace.
1565 * First tell the entry what type of ACE this is.
1568 if (sys_acl_set_tag_type(the_entry
, p_ace
->type
) == -1) {
1569 DEBUG(0,("set_canon_ace_list: Failed to set tag type on entry %d. (%s)\n",
1570 i
, strerror(errno
) ));
1575 * Only set the qualifier (user or group id) if the entry is a user
1579 if ((p_ace
->type
== SMB_ACL_USER
) || (p_ace
->type
== SMB_ACL_GROUP
)) {
1580 if (sys_acl_set_qualifier(the_entry
,(void *)&p_ace
->unix_ug
.uid
) == -1) {
1581 DEBUG(0,("set_canon_ace_list: Failed to set qualifier on entry %d. (%s)\n",
1582 i
, strerror(errno
) ));
1588 * Convert the mode_t perms in the canon_ace to a POSIX permset.
1591 if (sys_acl_get_permset(the_entry
, &the_permset
) == -1) {
1592 DEBUG(0,("set_canon_ace_list: Failed to get permset on entry %d. (%s)\n",
1593 i
, strerror(errno
) ));
1597 if (map_acl_perms_to_permset(p_ace
->perms
, &the_permset
) == -1) {
1598 DEBUG(0,("set_canon_ace_list: Failed to create permset for mode (%u) on entry %d. (%s)\n",
1599 (unsigned int)p_ace
->perms
, i
, strerror(errno
) ));
1604 * ..and apply them to the entry.
1607 if (sys_acl_set_permset(the_entry
, the_permset
) == -1) {
1608 DEBUG(0,("set_canon_ace_list: Failed to add permset on entry %d. (%s)\n",
1609 i
, strerror(errno
) ));
1614 print_canon_ace( p_ace
, i
);
1618 * Add in a mask of rwx.
1621 if (sys_acl_create_entry( &the_acl
, &mask_entry
) == -1) {
1622 DEBUG(0,("set_canon_ace_list: Failed to create mask entry. (%s)\n", strerror(errno
) ));
1626 if (sys_acl_set_tag_type(mask_entry
, SMB_ACL_MASK
) == -1) {
1627 DEBUG(0,("set_canon_ace_list: Failed to set tag type on mask entry. (%s)\n",strerror(errno
) ));
1631 if (sys_acl_get_permset(mask_entry
, &mask_permset
) == -1) {
1632 DEBUG(0,("set_canon_ace_list: Failed to get mask permset. (%s)\n", strerror(errno
) ));
1636 if (map_acl_perms_to_permset(S_IRUSR
|S_IWUSR
|S_IXUSR
, &mask_permset
) == -1) {
1637 DEBUG(0,("set_canon_ace_list: Failed to create mask permset. (%s)\n", strerror(errno
) ));
1641 if (sys_acl_set_permset(mask_entry
, mask_permset
) == -1) {
1642 DEBUG(0,("set_canon_ace_list: Failed to add mask permset. (%s)\n", strerror(errno
) ));
1647 * Check if the ACL is valid.
1650 if (sys_acl_valid(the_acl
) == -1) {
1651 DEBUG(0,("set_canon_ace_list: ACL type (%s) is invalid for set (%s).\n",
1652 the_acl_type
== SMB_ACL_TYPE_DEFAULT
? "directory default" : "file",
1658 * Finally apply it to the file or directory.
1661 if(default_ace
|| fsp
->is_directory
|| fsp
->fd
== -1) {
1662 if (sys_acl_set_file(dos_to_unix(fsp
->fsp_name
,False
), the_acl_type
, the_acl
) == -1) {
1663 DEBUG(0,("set_canon_ace_list: sys_acl_set_file type %s failed for file %s (%s).\n",
1664 the_acl_type
== SMB_ACL_TYPE_DEFAULT
? "directory default" : "file",
1665 fsp
->fsp_name
, strerror(errno
) ));
1669 if (sys_acl_set_fd(fsp
->fd
, the_acl
) == -1) {
1670 DEBUG(0,("set_canon_ace_list: sys_acl_set_file failed for file %s (%s).\n",
1671 fsp
->fsp_name
, strerror(errno
) ));
1680 if (the_acl
!= NULL
)
1681 sys_acl_free_acl(the_acl
);
1686 /****************************************************************************
1687 Convert a canon_ace to a generic 3 element permission - if possible.
1688 ****************************************************************************/
1690 #define MAP_PERM(p,mask,result) (((p) & (mask)) ? (result) : 0 )
1692 static BOOL
convert_canon_ace_to_posix_perms( files_struct
*fsp
, canon_ace
*file_ace_list
, mode_t
*posix_perms
)
1694 int snum
= SNUM(fsp
->conn
);
1695 size_t ace_count
= count_canon_ace_list(file_ace_list
);
1697 canon_ace
*owner_ace
= NULL
;
1698 canon_ace
*group_ace
= NULL
;
1699 canon_ace
*other_ace
= NULL
;
1703 if (ace_count
!= 3) {
1704 DEBUG(3,("convert_canon_ace_to_posix_perms: Too many ACE entries for file %s to convert to \
1705 posix perms.\n", fsp
->fsp_name
));
1709 for (ace_p
= file_ace_list
; ace_p
; ace_p
= ace_p
->next
) {
1710 if (ace_p
->owner_type
== UID_ACE
)
1712 else if (ace_p
->owner_type
== GID_ACE
)
1714 else if (ace_p
->owner_type
== WORLD_ACE
)
1718 if (!owner_ace
|| !group_ace
|| !other_ace
) {
1719 DEBUG(3,("convert_canon_ace_to_posix_perms: Can't get standard entries for file %s.\n",
1724 *posix_perms
= (mode_t
)0;
1726 *posix_perms
|= owner_ace
->perms
;
1727 *posix_perms
|= MAP_PERM(group_ace
->perms
, S_IRUSR
, S_IRGRP
);
1728 *posix_perms
|= MAP_PERM(group_ace
->perms
, S_IWUSR
, S_IWGRP
);
1729 *posix_perms
|= MAP_PERM(group_ace
->perms
, S_IXUSR
, S_IXGRP
);
1730 *posix_perms
|= MAP_PERM(other_ace
->perms
, S_IRUSR
, S_IROTH
);
1731 *posix_perms
|= MAP_PERM(other_ace
->perms
, S_IWUSR
, S_IWOTH
);
1732 *posix_perms
|= MAP_PERM(other_ace
->perms
, S_IXUSR
, S_IXOTH
);
1734 /* The owner must have at least read access. */
1736 *posix_perms
|= S_IRUSR
;
1737 if (fsp
->is_directory
)
1738 *posix_perms
|= (S_IWUSR
|S_IXUSR
);
1740 /* If requested apply the masks. */
1742 /* Get the initial bits to apply. */
1744 if (fsp
->is_directory
) {
1745 and_bits
= lp_dir_security_mask(snum
);
1746 or_bits
= lp_force_dir_security_mode(snum
);
1748 and_bits
= lp_security_mask(snum
);
1749 or_bits
= lp_force_security_mode(snum
);
1752 *posix_perms
= (((*posix_perms
) & and_bits
)|or_bits
);
1754 DEBUG(10,("convert_canon_ace_to_posix_perms: converted u=%o,g=%o,w=%o to perm=0%o for file %s.\n",
1755 (int)owner_ace
->perms
, (int)group_ace
->perms
, (int)other_ace
->perms
, (int)*posix_perms
,
1761 static int nt_ace_comp( SEC_ACE
*a1
, SEC_ACE
*a2
)
1763 if (a1
->type
== a2
->type
)
1766 if (a1
->type
== SEC_ACE_TYPE_ACCESS_DENIED
&& a2
->type
== SEC_ACE_TYPE_ACCESS_ALLOWED
)
1771 /****************************************************************************
1772 Reply to query a security descriptor from an fsp. If it succeeds it allocates
1773 the space for the return elements and returns the size needed to return the
1774 security descriptor. This should be the only external function needed for
1775 the UNIX style get ACL.
1776 ****************************************************************************/
1778 size_t get_nt_acl(files_struct
*fsp
, SEC_DESC
**ppdesc
)
1780 SMB_STRUCT_STAT sbuf
;
1781 SEC_ACE
*nt_ace_list
= NULL
;
1785 SEC_ACL
*psa
= NULL
;
1786 size_t num_acls
= 0;
1787 size_t num_dir_acls
= 0;
1788 size_t num_aces
= 0;
1789 SMB_ACL_T posix_acl
= NULL
;
1790 SMB_ACL_T dir_acl
= NULL
;
1791 canon_ace
*file_ace
= NULL
;
1792 canon_ace
*dir_ace
= NULL
;
1796 DEBUG(10,("get_nt_acl: called for file %s\n", fsp
->fsp_name
));
1798 if(fsp
->is_directory
|| fsp
->fd
== -1) {
1800 /* Get the stat struct for the owner info. */
1801 if(vfs_stat(fsp
->conn
,fsp
->fsp_name
, &sbuf
) != 0) {
1805 * Get the ACL from the path.
1808 posix_acl
= sys_acl_get_file( dos_to_unix(fsp
->fsp_name
, False
), SMB_ACL_TYPE_ACCESS
);
1811 * If it's a directory get the default POSIX ACL.
1814 if(fsp
->is_directory
)
1815 dir_acl
= sys_acl_get_file( dos_to_unix(fsp
->fsp_name
, False
), SMB_ACL_TYPE_DEFAULT
);
1819 /* Get the stat struct for the owner info. */
1820 if(vfs_fstat(fsp
,fsp
->fd
,&sbuf
) != 0) {
1824 * Get the ACL from the fd.
1826 posix_acl
= sys_acl_get_fd(fsp
->fd
);
1829 DEBUG(5,("get_nt_acl : file ACL %s, directory ACL %s\n",
1830 posix_acl
? "present" : "absent",
1831 dir_acl
? "present" : "absent" ));
1834 * Get the owner, group and world SIDs.
1837 create_file_sids(&sbuf
, &owner_sid
, &group_sid
);
1839 /* Create the canon_ace lists. */
1840 file_ace
= canonicalise_acl( fsp
, posix_acl
, &sbuf
, &owner_sid
, &group_sid
);
1841 num_acls
= count_canon_ace_list(file_ace
);
1843 /* We must have *some* ACLS. */
1845 if (num_acls
== 0) {
1846 DEBUG(0,("get_nt_acl : No ACLs on file (%s) !\n", fsp
->fsp_name
));
1850 if (fsp
->is_directory
) {
1852 * If we have to fake a default ACL then this is the mode to use.
1854 sbuf
.st_mode
= unix_mode( fsp
->conn
, FILE_ATTRIBUTE_ARCHIVE
, fsp
->fsp_name
);
1856 dir_ace
= canonicalise_acl(fsp
, dir_acl
, &sbuf
, &owner_sid
, &group_sid
);
1857 num_dir_acls
= count_canon_ace_list(dir_ace
);
1860 /* Allocate the ace list. */
1861 if ((nt_ace_list
= (SEC_ACE
*)malloc((num_acls
+ num_dir_acls
)* sizeof(SEC_ACE
))) == NULL
) {
1862 DEBUG(0,("get_nt_acl: Unable to malloc space for nt_ace_list.\n"));
1866 memset(nt_ace_list
, '\0', (num_acls
+ num_dir_acls
) * sizeof(SEC_ACE
) );
1869 * Create the NT ACE list from the canonical ace lists.
1879 for (i
= 0; i
< num_acls
; i
++, ace
= ace
->next
) {
1880 SEC_ACCESS acc
= map_canon_ace_perms(&nt_acl_type
, &owner_sid
, ace
);
1881 init_sec_ace(&nt_ace_list
[num_aces
++], &ace
->sid
, nt_acl_type
, acc
, 0);
1886 for (i
= 0; i
< num_dir_acls
; i
++, ace
= ace
->next
) {
1887 SEC_ACCESS acc
= map_canon_ace_perms(&nt_acl_type
, &owner_sid
, ace
);
1888 init_sec_ace(&nt_ace_list
[num_aces
++], &ace
->sid
, nt_acl_type
, acc
,
1889 SEC_ACE_FLAG_OBJECT_INHERIT
|SEC_ACE_FLAG_CONTAINER_INHERIT
|SEC_ACE_FLAG_INHERIT_ONLY
);
1893 * Sort to force deny entries to the front.
1896 if (num_acls
+ num_dir_acls
)
1897 qsort( nt_ace_list
, num_acls
+ num_dir_acls
, sizeof(nt_ace_list
[0]), QSORT_CAST nt_ace_comp
);
1901 if((psa
= make_sec_acl( main_loop_talloc_get(), ACL_REVISION
, num_aces
, nt_ace_list
)) == NULL
) {
1902 DEBUG(0,("get_nt_acl: Unable to malloc space for acl.\n"));
1907 *ppdesc
= make_standard_sec_desc( main_loop_talloc_get(), &owner_sid
, &group_sid
, psa
, &sd_size
);
1910 DEBUG(0,("get_nt_acl: Unable to malloc space for security descriptor.\n"));
1917 sys_acl_free_acl(posix_acl
);
1919 sys_acl_free_acl(dir_acl
);
1920 free_canon_ace_list(file_ace
);
1921 free_canon_ace_list(dir_ace
);
1928 /****************************************************************************
1929 Reply to set a security descriptor on an fsp. security_info_sent is the
1930 description of the following NT ACL.
1931 This should be the only external function needed for the UNIX style set ACL.
1932 ****************************************************************************/
1934 BOOL
set_nt_acl(files_struct
*fsp
, uint32 security_info_sent
, SEC_DESC
*psd
)
1936 connection_struct
*conn
= fsp
->conn
;
1937 uid_t user
= (uid_t
)-1;
1938 gid_t grp
= (gid_t
)-1;
1939 SMB_STRUCT_STAT sbuf
;
1940 DOM_SID file_owner_sid
;
1941 DOM_SID file_grp_sid
;
1942 canon_ace
*file_ace_list
= NULL
;
1943 canon_ace
*dir_ace_list
= NULL
;
1944 BOOL acl_perms
= False
;
1945 mode_t orig_mode
= (mode_t
)0;
1949 DEBUG(10,("set_nt_acl: called for file %s\n", fsp
->fsp_name
));
1952 * Get the current state of the file.
1955 if(fsp
->is_directory
|| fsp
->fd
== -1) {
1956 if(vfs_stat(fsp
->conn
,fsp
->fsp_name
, &sbuf
) != 0)
1959 if(vfs_fstat(fsp
,fsp
->fd
,&sbuf
) != 0)
1963 /* Save the original elements we check against. */
1964 orig_mode
= sbuf
.st_mode
;
1965 orig_uid
= sbuf
.st_uid
;
1966 orig_gid
= sbuf
.st_gid
;
1969 * Unpack the user/group/world id's.
1972 if (!unpack_nt_owners( &sbuf
, &user
, &grp
, security_info_sent
, psd
))
1976 * Do we need to chown ?
1979 if((user
!= (uid_t
)-1 || grp
!= (uid_t
)-1) && (orig_uid
!= user
|| orig_gid
!= grp
)) {
1981 DEBUG(3,("set_nt_acl: chown %s. uid = %u, gid = %u.\n",
1982 fsp
->fsp_name
, (unsigned int)user
, (unsigned int)grp
));
1984 if(vfs_chown( fsp
->conn
, fsp
->fsp_name
, user
, grp
) == -1) {
1985 DEBUG(3,("set_nt_acl: chown %s, %u, %u failed. Error = %s.\n",
1986 fsp
->fsp_name
, (unsigned int)user
, (unsigned int)grp
, strerror(errno
) ));
1991 * Recheck the current state of the file, which may have changed.
1992 * (suid/sgid bits, for instance)
1995 if(fsp
->is_directory
) {
1996 if(vfs_stat(fsp
->conn
, fsp
->fsp_name
, &sbuf
) != 0) {
2004 ret
= vfs_stat(fsp
->conn
, fsp
->fsp_name
, &sbuf
);
2006 ret
= vfs_fstat(fsp
,fsp
->fd
,&sbuf
);
2012 /* Save the original elements we check against. */
2013 orig_mode
= sbuf
.st_mode
;
2014 orig_uid
= sbuf
.st_uid
;
2015 orig_gid
= sbuf
.st_gid
;
2018 create_file_sids(&sbuf
, &file_owner_sid
, &file_grp_sid
);
2020 acl_perms
= unpack_canon_ace( fsp
, &sbuf
, &file_owner_sid
, &file_grp_sid
,
2021 &file_ace_list
, &dir_ace_list
, security_info_sent
, psd
);
2023 if ((file_ace_list
== NULL
) && (dir_ace_list
== NULL
)) {
2024 /* W2K traverse DACL set - ignore. */
2029 DEBUG(3,("set_nt_acl: cannot set permissions\n"));
2030 free_canon_ace_list(file_ace_list
);
2031 free_canon_ace_list(dir_ace_list
);
2036 * Only change security if we got a DACL.
2039 if((security_info_sent
& DACL_SECURITY_INFORMATION
) && (psd
->dacl
!= NULL
)) {
2041 BOOL acl_set_support
= False
;
2045 * Try using the POSIX ACL set first. Fall back to chmod if
2046 * we have no ACL support on this filesystem.
2049 if (acl_perms
&& file_ace_list
) {
2050 ret
= set_canon_ace_list(fsp
, file_ace_list
, False
, &acl_set_support
);
2051 if (acl_set_support
&& ret
== False
) {
2052 DEBUG(3,("set_nt_acl: failed to set file acl on file %s (%s).\n", fsp
->fsp_name
, strerror(errno
) ));
2053 free_canon_ace_list(file_ace_list
);
2054 free_canon_ace_list(dir_ace_list
);
2059 if (acl_perms
&& acl_set_support
&& fsp
->is_directory
&& dir_ace_list
) {
2060 if (!set_canon_ace_list(fsp
, dir_ace_list
, True
, &acl_set_support
)) {
2061 DEBUG(3,("set_nt_acl: failed to set default acl on directory %s (%s).\n", fsp
->fsp_name
, strerror(errno
) ));
2062 free_canon_ace_list(file_ace_list
);
2063 free_canon_ace_list(dir_ace_list
);
2069 * If we cannot set using POSIX ACLs we fall back to checking if we need to chmod.
2072 if(!acl_set_support
&& acl_perms
) {
2075 if (!convert_canon_ace_to_posix_perms( fsp
, file_ace_list
, &posix_perms
)) {
2076 free_canon_ace_list(file_ace_list
);
2077 free_canon_ace_list(dir_ace_list
);
2078 DEBUG(3,("set_nt_acl: failed to convert file acl to posix permissions for file %s.\n",
2083 if (orig_mode
!= posix_perms
) {
2085 DEBUG(3,("set_nt_acl: chmod %s. perms = 0%o.\n",
2086 fsp
->fsp_name
, (unsigned int)posix_perms
));
2088 if(conn
->vfs_ops
.chmod(conn
,dos_to_unix(fsp
->fsp_name
, False
), posix_perms
) == -1) {
2089 DEBUG(3,("set_nt_acl: chmod %s, 0%o failed. Error = %s.\n",
2090 fsp
->fsp_name
, (unsigned int)posix_perms
, strerror(errno
) ));
2091 free_canon_ace_list(file_ace_list
);
2092 free_canon_ace_list(dir_ace_list
);
2099 free_canon_ace_list(file_ace_list
);
2100 free_canon_ace_list(dir_ace_list
);
2105 /****************************************************************************
2106 Do a chmod by setting the ACL USER_OBJ, GROUP_OBJ and OTHER bits in an ACL
2107 and set the mask to rwx. Needed to preserve complex ACLs set by NT.
2108 ****************************************************************************/
2110 static int chmod_acl_internals( SMB_ACL_T posix_acl
, mode_t mode
)
2112 int entry_id
= SMB_ACL_FIRST_ENTRY
;
2113 SMB_ACL_ENTRY_T entry
;
2114 int num_entries
= 0;
2116 while ( sys_acl_get_entry(posix_acl
, entry_id
, &entry
) == 1) {
2117 SMB_ACL_TAG_T tagtype
;
2118 SMB_ACL_PERMSET_T permset
;
2122 if (entry_id
== SMB_ACL_FIRST_ENTRY
)
2123 entry_id
= SMB_ACL_NEXT_ENTRY
;
2125 if (sys_acl_get_tag_type(entry
, &tagtype
) == -1)
2128 if (sys_acl_get_permset(entry
, &permset
) == -1)
2134 case SMB_ACL_USER_OBJ
:
2135 perms
= unix_perms_to_acl_perms(mode
, S_IRUSR
, S_IWUSR
, S_IXUSR
);
2137 case SMB_ACL_GROUP_OBJ
:
2138 perms
= unix_perms_to_acl_perms(mode
, S_IRGRP
, S_IWGRP
, S_IXGRP
);
2141 perms
= S_IRUSR
|S_IWUSR
|S_IXUSR
;
2144 perms
= unix_perms_to_acl_perms(mode
, S_IROTH
, S_IWOTH
, S_IXOTH
);
2150 if (map_acl_perms_to_permset(perms
, &permset
) == -1)
2153 if (sys_acl_set_permset(entry
, permset
) == -1)
2158 * If this is a simple 3 element ACL then it's a standard
2159 * UNIX permission set. Just use chmod...
2162 if (num_entries
== 3)
2168 /****************************************************************************
2169 Do a chmod by setting the ACL USER_OBJ, GROUP_OBJ and OTHER bits in an ACL
2170 and set the mask to rwx. Needed to preserve complex ACLs set by NT.
2171 Note that name is in UNIX character set.
2172 ****************************************************************************/
2174 int chmod_acl(char *name
, mode_t mode
)
2176 SMB_ACL_T posix_acl
= NULL
;
2179 if ((posix_acl
= sys_acl_get_file(name
, SMB_ACL_TYPE_ACCESS
)) == NULL
)
2182 if ((ret
= chmod_acl_internals(posix_acl
, mode
)) == -1)
2185 ret
= sys_acl_set_file(name
, SMB_ACL_TYPE_ACCESS
, posix_acl
);
2189 sys_acl_free_acl(posix_acl
);
2193 /****************************************************************************
2194 Do an fchmod by setting the ACL USER_OBJ, GROUP_OBJ and OTHER bits in an ACL
2195 and set the mask to rwx. Needed to preserve complex ACLs set by NT.
2196 ****************************************************************************/
2198 int fchmod_acl(int fd
, mode_t mode
)
2200 SMB_ACL_T posix_acl
= NULL
;
2203 if ((posix_acl
= sys_acl_get_fd(fd
)) == NULL
)
2206 if ((ret
= chmod_acl_internals(posix_acl
, mode
)) == -1)
2209 ret
= sys_acl_set_fd(fd
, posix_acl
);
2213 sys_acl_free_acl(posix_acl
);