summaryrefslogtreecommitdiff
path: root/source3/modules/vfs_hpuxacl.c
blob: edce161c19eb215a728055bd956189b289db240e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
/*
 * Unix SMB/Netbios implementation.
 * VFS module to get and set HP-UX ACLs
 * Copyright (C) Michael Adam 2006
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see <http://www.gnu.org/licenses/>.
 */

/*
 * This module supports JFS (POSIX) ACLs on VxFS (Veritas * Filesystem).
 * These are available on HP-UX 11.00 if JFS 3.3 is installed. 
 * On HP-UX 11i (11.11 and above) these ACLs are supported out of
 * the box.
 *
 * There is another form of ACLs on HFS. These ACLs have a
 * completely different API and their own set of userland tools.
 * Since HFS seems to be considered deprecated, HFS acls
 * are not supported. (They could be supported through a separate
 * vfs-module if there is demand.)
 */

/* =================================================================
 * NOTE:
 *
 * The original hpux-acl code in lib/sysacls.c was based upon the
 * solaris acl code in the same file. Now for the new modularized
 * acl implementation, I have taken the code from vfs_solarisacls.c
 * and did similar adaptations as were done before, essentially
 * reusing the original internal aclsort functions.
 * The check for the presence of the acl() call has been adopted, and
 * a check for the presence of the aclsort() call has been added. 
 * 
 * Michael Adam <obnox@samba.org>
 *
 * ================================================================= */


#include "includes.h"

/* 
 * including standard header <sys/aclv.h> 
 *
 * included here as a quick hack for the special HP-UX-situation:
 *
 * The problem is that, on HP-UX, jfs/posix acls are
 * defined in <sys/aclv.h>, while the deprecated hfs acls 
 * are defined inside <sys/acl.h>.
 *
 */
/* GROUP is defined somewhere else so undef it here... */
#undef GROUP
#include <sys/aclv.h>
/* dl.h: needed to check for acl call via shl_findsym */
#include <dl.h>

typedef struct acl HPUX_ACE_T;
typedef struct acl *HPUX_ACL_T;
typedef int HPUX_ACL_TAG_T;   /* the type of an ACL entry */
typedef ushort HPUX_PERM_T;

/* Structure to capture the count for each type of ACE. 
 * (for hpux_internal_aclsort */
struct hpux_acl_types {
	int n_user;
	int n_def_user;
	int n_user_obj;
	int n_def_user_obj;

	int n_group;
	int n_def_group;
	int n_group_obj;
	int n_def_group_obj;

	int n_other;
	int n_other_obj;
	int n_def_other_obj;

	int n_class_obj;
	int n_def_class_obj;

	int n_illegal_obj;
};

/* for convenience: check if hpux acl entry is a default entry?  */
#define _IS_DEFAULT(ace) ((ace).a_type & ACL_DEFAULT)
#define _IS_OF_TYPE(ace, type) ( \
	(((type) == SMB_ACL_TYPE_ACCESS) && !_IS_DEFAULT(ace)) \
	|| \
	(((type) == SMB_ACL_TYPE_DEFAULT) && _IS_DEFAULT(ace)) \
)


/* prototypes for private functions */

static HPUX_ACL_T hpux_acl_init(int count);
static bool smb_acl_to_hpux_acl(SMB_ACL_T smb_acl, 
		HPUX_ACL_T *solariacl, int *count, 
		SMB_ACL_TYPE_T type);
static SMB_ACL_T hpux_acl_to_smb_acl(HPUX_ACL_T hpuxacl, int count,
		SMB_ACL_TYPE_T type);
static HPUX_ACL_TAG_T smb_tag_to_hpux_tag(SMB_ACL_TAG_T smb_tag);
static SMB_ACL_TAG_T hpux_tag_to_smb_tag(HPUX_ACL_TAG_T hpux_tag);
static bool hpux_add_to_acl(HPUX_ACL_T *hpux_acl, int *count,
		HPUX_ACL_T add_acl, int add_count, SMB_ACL_TYPE_T type);
static bool hpux_acl_get_file(const char *name, HPUX_ACL_T *hpuxacl, 
		int *count);
static SMB_ACL_PERM_T hpux_perm_to_smb_perm(const HPUX_PERM_T perm);
static HPUX_PERM_T smb_perm_to_hpux_perm(const SMB_ACL_PERM_T perm);
#if 0
static bool hpux_acl_check(HPUX_ACL_T hpux_acl, int count);
#endif
/* aclsort (internal) and helpers: */
static bool hpux_acl_sort(HPUX_ACL_T acl, int count);
static int hpux_internal_aclsort(int acl_count, int calclass, HPUX_ACL_T aclp);
static void hpux_count_obj(int acl_count, HPUX_ACL_T aclp, 
		struct hpux_acl_types *acl_type_count);
static void hpux_swap_acl_entries(HPUX_ACE_T *aclp0, HPUX_ACE_T *aclp1);
static bool hpux_prohibited_duplicate_type(int acl_type);

static bool hpux_acl_call_present(void);
static bool hpux_aclsort_call_present(void);


/* public functions - the api */

SMB_ACL_T hpuxacl_sys_acl_get_file(vfs_handle_struct *handle,
				      const char *path_p,
				      SMB_ACL_TYPE_T type)
{
	SMB_ACL_T result = NULL;
	int count;
	HPUX_ACL_T hpux_acl;
	
	DEBUG(10, ("hpuxacl_sys_acl_get_file called for file '%s'.\n", 
		   path_p));

	if(hpux_acl_call_present() == False) {
		/* Looks like we don't have the acl() system call on HPUX. 
		 * May be the system doesn't have the latest version of JFS.
		 */
		goto done;
	}

	if (type != SMB_ACL_TYPE_ACCESS && type != SMB_ACL_TYPE_DEFAULT) {
		DEBUG(10, ("invalid SMB_ACL_TYPE given (%d)\n", type));
		errno = EINVAL;
		goto done;
	}

	DEBUGADD(10, ("getting %s acl\n", 
		      ((type == SMB_ACL_TYPE_ACCESS) ? "access" : "default")));

	if (!hpux_acl_get_file(path_p, &hpux_acl, &count)) {
		goto done;
	}
	result = hpux_acl_to_smb_acl(hpux_acl, count, type);
	if (result == NULL) {
		DEBUG(10, ("conversion hpux_acl -> smb_acl failed (%s).\n",
			   strerror(errno)));
	}
	
 done:
	DEBUG(10, ("hpuxacl_sys_acl_get_file %s.\n",
		   ((result == NULL) ? "failed" : "succeeded" )));
	SAFE_FREE(hpux_acl);
	return result;
}


/*
 * get the access ACL of a file referred to by a fd
 */
SMB_ACL_T hpuxacl_sys_acl_get_fd(vfs_handle_struct *handle,
				 files_struct *fsp,
				 int fd)
{
        /* 
	 * HPUX doesn't have the facl call. Fake it using the path.... JRA. 
	 */
	/* For all I see, the info should already be in the fsp
	 * parameter, but get it again to be safe --- necessary? */
        files_struct *file_struct_p = file_find_fd(fd);
        if (file_struct_p == NULL) {
                errno = EBADF;
                return NULL;
        }
        /*
         * We know we're in the same conn context. So we
         * can use the relative path.
         */
	DEBUG(10, ("redirecting call of hpuxacl_sys_acl_get_fd to "
		"hpuxacl_sys_acl_get_file (no facl syscall on HPUX).\n"));

        return hpuxacl_sys_acl_get_file(handle, file_struct_p->fsp_name, 
			SMB_ACL_TYPE_ACCESS);
}


int hpuxacl_sys_acl_set_file(vfs_handle_struct *handle,
			     const char *name,
			     SMB_ACL_TYPE_T type,
			     SMB_ACL_T theacl)
{
	int ret = -1;
	SMB_STRUCT_STAT s;
	HPUX_ACL_T hpux_acl;
	int count;
	
	DEBUG(10, ("hpuxacl_sys_acl_set_file called for file '%s'\n",
		   name));


	if(hpux_acl_call_present() == False) {
		/* Looks like we don't have the acl() system call on HPUX. 
		 * May be the system doesn't have the latest version of JFS.
		 */
		goto done;
	}

	if ((type != SMB_ACL_TYPE_ACCESS) && (type != SMB_ACL_TYPE_DEFAULT)) {
		errno = EINVAL;
		DEBUG(10, ("invalid smb acl type given (%d).\n", type));
		goto done;
	}
	DEBUGADD(10, ("setting %s acl\n", 
		      ((type == SMB_ACL_TYPE_ACCESS) ? "access" : "default")));

	if(!smb_acl_to_hpux_acl(theacl, &hpux_acl, &count, type)) {
		DEBUG(10, ("conversion smb_acl -> hpux_acl failed (%s).\n",
			   strerror(errno)));
                goto done;
	}

	/*
	 * if the file is a directory, there is extra work to do:
	 * since the hpux acl call stores both the access acl and 
	 * the default acl as provided, we have to get the acl part 
	 * that has _not_ been specified in "type" from the file first 
	 * and concatenate it with the acl provided.
	 */
	if (SMB_VFS_STAT(handle->conn, name, &s) != 0) {
		DEBUG(10, ("Error in stat call: %s\n", strerror(errno)));
		goto done;
	}
	if (S_ISDIR(s.st_mode)) {
		HPUX_ACL_T other_acl; 
		int other_count;
		SMB_ACL_TYPE_T other_type;

		other_type = (type == SMB_ACL_TYPE_ACCESS) 
			? SMB_ACL_TYPE_DEFAULT
			: SMB_ACL_TYPE_ACCESS;
		DEBUGADD(10, ("getting acl from filesystem\n"));
		if (!hpux_acl_get_file(name, &other_acl, &other_count)) {
			DEBUG(10, ("error getting acl from directory\n"));
			goto done;
		}
		DEBUG(10, ("adding %s part of fs acl to given acl\n",
			   ((other_type == SMB_ACL_TYPE_ACCESS) 
			    ? "access"
			    : "default")));
		if (!hpux_add_to_acl(&hpux_acl, &count, other_acl,
					other_count, other_type)) 
		{
			DEBUG(10, ("error adding other acl.\n"));
			SAFE_FREE(other_acl);
			goto done;
		}
		SAFE_FREE(other_acl);
	}
	else if (type != SMB_ACL_TYPE_ACCESS) {
		errno = EINVAL;
		goto done;
	}

	if (!hpux_acl_sort(hpux_acl, count)) {
		DEBUG(10, ("resulting acl is not valid!\n"));
		goto done;
	}
	DEBUG(10, ("resulting acl is valid.\n"));

	ret = acl(CONST_DISCARD(char *, name), ACL_SET, count, hpux_acl);
	if (ret != 0) {
		DEBUG(0, ("ERROR calling acl: %s\n", strerror(errno)));
	}
	
 done:
	DEBUG(10, ("hpuxacl_sys_acl_set_file %s.\n",
		   ((ret != 0) ? "failed" : "succeeded")));
	SAFE_FREE(hpux_acl);
	return ret;
}

/*
 * set the access ACL on the file referred to by a fd 
 */
int hpuxacl_sys_acl_set_fd(vfs_handle_struct *handle,
			      files_struct *fsp,
			      int fd, SMB_ACL_T theacl)
{
        /*
         * HPUX doesn't have the facl call. Fake it using the path.... JRA.
         */
	/* For all I see, the info should already be in the fsp
	 * parameter, but get it again to be safe --- necessary? */
        files_struct *file_struct_p = file_find_fd(fd);
        if (file_struct_p == NULL) {
                errno = EBADF;
                return -1;
        }
        /*
         * We know we're in the same conn context. So we
         * can use the relative path.
         */
	DEBUG(10, ("redirecting call of hpuxacl_sys_acl_set_fd to "
		"hpuxacl_sys_acl_set_file (no facl syscall on HPUX)\n"));

        return hpuxacl_sys_acl_set_file(handle, file_struct_p->fsp_name,
			SMB_ACL_TYPE_ACCESS, theacl);
}


/*
 * delete the default ACL of a directory
 *
 * This is achieved by fetching the access ACL and rewriting it 
 * directly, via the hpux system call: the ACL_SET call on 
 * directories writes both the access and the default ACL as provided.
 *
 * XXX: posix acl_delete_def_file returns an error if
 * the file referred to by path is not a directory.
 * this function does not complain but the actions 
 * have no effect on a file other than a directory.
 * But sys_acl_delete_default_file is only called in
 * smbd/posixacls.c after having checked that the file
 * is a directory, anyways. So implementing the extra
 * check is considered unnecessary. --- Agreed? XXX
 */
int hpuxacl_sys_acl_delete_def_file(vfs_handle_struct *handle,
				    const char *path)
{
	SMB_ACL_T smb_acl;
	int ret = -1;
	HPUX_ACL_T hpux_acl;
	int count;

	DEBUG(10, ("entering hpuxacl_sys_acl_delete_def_file.\n"));
	
	smb_acl = hpuxacl_sys_acl_get_file(handle, path, 
					   SMB_ACL_TYPE_ACCESS);
	if (smb_acl == NULL) {
		DEBUG(10, ("getting file acl failed!\n"));
		goto done;
	}
	if (!smb_acl_to_hpux_acl(smb_acl, &hpux_acl, &count, 
				 SMB_ACL_TYPE_ACCESS))
	{
		DEBUG(10, ("conversion smb_acl -> hpux_acl failed.\n"));
		goto done;
	}
	if (!hpux_acl_sort(hpux_acl, count)) {
		DEBUG(10, ("resulting acl is not valid!\n"));
		goto done;
	}
	ret = acl(CONST_DISCARD(char *, path), ACL_SET, count, hpux_acl);
	if (ret != 0) {
		DEBUG(10, ("settinge file acl failed!\n"));
	}
	
 done:
	DEBUG(10, ("hpuxacl_sys_acl_delete_def_file %s.\n",
		   ((ret != 0) ? "failed" : "succeeded" )));
	SAFE_FREE(smb_acl);
	return ret;
}


/* 
 * private functions 
 */

static HPUX_ACL_T hpux_acl_init(int count)
{
	HPUX_ACL_T hpux_acl = 
		(HPUX_ACL_T)SMB_MALLOC(sizeof(HPUX_ACE_T) * count);
	if (hpux_acl == NULL) {
		errno = ENOMEM;
	}
	return hpux_acl;
}

/*
 * Convert the SMB acl to the ACCESS or DEFAULT part of a 
 * hpux ACL, as desired.
 */
static bool smb_acl_to_hpux_acl(SMB_ACL_T smb_acl, 
				   HPUX_ACL_T *hpux_acl, int *count, 
				   SMB_ACL_TYPE_T type)
{
	bool ret = False;
	int i;
	int check_which, check_rc;

	DEBUG(10, ("entering smb_acl_to_hpux_acl\n"));
	
	*hpux_acl = NULL;
	*count = 0;

	for (i = 0; i < smb_acl->count; i++) {
		const struct smb_acl_entry *smb_entry = &(smb_acl->acl[i]);
		HPUX_ACE_T hpux_entry;

		ZERO_STRUCT(hpux_entry);

		hpux_entry.a_type = smb_tag_to_hpux_tag(smb_entry->a_type);
		if (hpux_entry.a_type == 0) {
			DEBUG(10, ("smb_tag to hpux_tag failed\n"));
			goto fail;
		}
		switch(hpux_entry.a_type) {
		case USER:
			DEBUG(10, ("got tag type USER with uid %d\n", 
				   smb_entry->uid));
			hpux_entry.a_id = (uid_t)smb_entry->uid;
			break;
		case GROUP:
			DEBUG(10, ("got tag type GROUP with gid %d\n", 
				   smb_entry->gid));
			hpux_entry.a_id = (uid_t)smb_entry->gid;
			break;
		default:
			break;
		}
		if (type == SMB_ACL_TYPE_DEFAULT) {
			DEBUG(10, ("adding default bit to hpux ace\n"));
			hpux_entry.a_type |= ACL_DEFAULT;
		}
		
		hpux_entry.a_perm = 
			smb_perm_to_hpux_perm(smb_entry->a_perm);
		DEBUG(10, ("assembled the following hpux ace:\n"));
		DEBUGADD(10, (" - type: 0x%04x\n", hpux_entry.a_type));
		DEBUGADD(10, (" - id: %d\n", hpux_entry.a_id));
		DEBUGADD(10, (" - perm: o%o\n", hpux_entry.a_perm));
		if (!hpux_add_to_acl(hpux_acl, count, &hpux_entry, 
					1, type))
		{
			DEBUG(10, ("error adding acl entry\n"));
			goto fail;
		}
		DEBUG(10, ("count after adding: %d (i: %d)\n", *count, i));
		DEBUG(10, ("test, if entry has been copied into acl:\n"));
		DEBUGADD(10, (" - type: 0x%04x\n",
			      (*hpux_acl)[(*count)-1].a_type));
		DEBUGADD(10, (" - id: %d\n",
			      (*hpux_acl)[(*count)-1].a_id));
		DEBUGADD(10, (" - perm: o%o\n",
			      (*hpux_acl)[(*count)-1].a_perm));
	}

	ret = True;
	goto done;
	
 fail:
	SAFE_FREE(*hpux_acl);
 done:
	DEBUG(10, ("smb_acl_to_hpux_acl %s\n",
		   ((ret == True) ? "succeeded" : "failed")));
	return ret;
}

/* 
 * convert either the access or the default part of a 
 * soaris acl to the SMB_ACL format.
 */
static SMB_ACL_T hpux_acl_to_smb_acl(HPUX_ACL_T hpux_acl, int count, 
					SMB_ACL_TYPE_T type)
{
	SMB_ACL_T result;
	int i;

	if ((result = sys_acl_init(0)) == NULL) {
		DEBUG(10, ("error allocating memory for SMB_ACL\n"));
		goto fail;
	}
	for (i = 0; i < count; i++) {
		SMB_ACL_ENTRY_T smb_entry;
		SMB_ACL_PERM_T smb_perm;
		
		if (!_IS_OF_TYPE(hpux_acl[i], type)) {
			continue;
		}
		result = SMB_REALLOC(result, 
				     sizeof(struct smb_acl_t) +
				     (sizeof(struct smb_acl_entry) *
				      (result->count + 1)));
		if (result == NULL) {
			DEBUG(10, ("error reallocating memory for SMB_ACL\n"));
			goto fail;
		}
		smb_entry = &result->acl[result->count];
		if (sys_acl_set_tag_type(smb_entry,
					 hpux_tag_to_smb_tag(hpux_acl[i].a_type)) != 0)
		{
			DEBUG(10, ("invalid tag type given: 0x%04x\n",
				   hpux_acl[i].a_type));
			goto fail;
		}
		/* intentionally not checking return code here: */
		sys_acl_set_qualifier(smb_entry, (void *)&hpux_acl[i].a_id);
		smb_perm = hpux_perm_to_smb_perm(hpux_acl[i].a_perm);
		if (sys_acl_set_permset(smb_entry, &smb_perm) != 0) {
			DEBUG(10, ("invalid permset given: %d\n", 
				   hpux_acl[i].a_perm));
			goto fail;
		}
		result->count += 1;
	}
	goto done;
	
 fail:
	SAFE_FREE(result);
 done:
	DEBUG(10, ("hpux_acl_to_smb_acl %s\n",
		   ((result == NULL) ? "failed" : "succeeded")));
	return result;
}



static HPUX_ACL_TAG_T smb_tag_to_hpux_tag(SMB_ACL_TAG_T smb_tag)
{
	HPUX_ACL_TAG_T hpux_tag = 0;

	DEBUG(10, ("smb_tag_to_hpux_tag\n"));
	DEBUGADD(10, (" --> got smb tag 0x%04x\n", smb_tag));
	
	switch (smb_tag) {
	case SMB_ACL_USER:
		hpux_tag = USER;
		break;
	case SMB_ACL_USER_OBJ:
		hpux_tag = USER_OBJ;
		break;
	case SMB_ACL_GROUP:
		hpux_tag = GROUP;
		break;
	case SMB_ACL_GROUP_OBJ:
		hpux_tag = GROUP_OBJ;
		break;
	case SMB_ACL_OTHER:
		hpux_tag = OTHER_OBJ;
		break;
	case SMB_ACL_MASK:
		hpux_tag = CLASS_OBJ;
		break;
	default:
		DEBUGADD(10, (" !!! unknown smb tag type 0x%04x\n", smb_tag));
		break;
	}
	
	DEBUGADD(10, (" --> determined hpux tag 0x%04x\n", hpux_tag));

	return hpux_tag;
}

static SMB_ACL_TAG_T hpux_tag_to_smb_tag(HPUX_ACL_TAG_T hpux_tag)
{
	SMB_ACL_TAG_T smb_tag = 0;

	DEBUG(10, ("hpux_tag_to_smb_tag:\n"));
	DEBUGADD(10, (" --> got hpux tag 0x%04x\n", hpux_tag)); 
	
	hpux_tag &= ~ACL_DEFAULT; 

	switch (hpux_tag) {
	case USER:
		smb_tag = SMB_ACL_USER;
		break;
	case USER_OBJ:
		smb_tag = SMB_ACL_USER_OBJ;
		break;
	case GROUP:
		smb_tag = SMB_ACL_GROUP;
		break;
	case GROUP_OBJ:
		smb_tag = SMB_ACL_GROUP_OBJ;
		break;
	case OTHER_OBJ:
		smb_tag = SMB_ACL_OTHER;
		break;
	case CLASS_OBJ:
		smb_tag = SMB_ACL_MASK;
		break;
	default:
		DEBUGADD(10, (" !!! unknown hpux tag type: 0x%04x\n", 
					hpux_tag));
		break;
	}

	DEBUGADD(10, (" --> determined smb tag 0x%04x\n", smb_tag));
	
	return smb_tag;
}


/* 
 * The permission bits used in the following two permission conversion 
 * functions are same, but the functions make us independent of the concrete 
 * permission data types.
 */
static SMB_ACL_PERM_T hpux_perm_to_smb_perm(const HPUX_PERM_T perm)
{
	SMB_ACL_PERM_T smb_perm = 0;
	smb_perm |= ((perm & SMB_ACL_READ) ? SMB_ACL_READ : 0);
	smb_perm |= ((perm & SMB_ACL_WRITE) ? SMB_ACL_WRITE : 0);
	smb_perm |= ((perm & SMB_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
	return smb_perm;
}


static HPUX_PERM_T smb_perm_to_hpux_perm(const SMB_ACL_PERM_T perm)
{
	HPUX_PERM_T hpux_perm = 0;
	hpux_perm |= ((perm & SMB_ACL_READ) ? SMB_ACL_READ : 0);
	hpux_perm |= ((perm & SMB_ACL_WRITE) ? SMB_ACL_WRITE : 0);
	hpux_perm |= ((perm & SMB_ACL_EXECUTE) ? SMB_ACL_EXECUTE : 0);
	return hpux_perm;
}


static bool hpux_acl_get_file(const char *name, HPUX_ACL_T *hpux_acl, 
				 int *count)
{
	bool result = False;
	static HPUX_ACE_T dummy_ace;

	DEBUG(10, ("hpux_acl_get_file called for file '%s'\n", name));
	
	/* 
	 * The original code tries some INITIAL_ACL_SIZE
	 * and only did the ACL_CNT call upon failure
	 * (for performance reasons).
	 * For the sake of simplicity, I skip this for now. 
	 *
	 * NOTE: There is a catch here on HP-UX: acl with cmd parameter
	 * ACL_CNT fails with errno EINVAL when called with a NULL
	 * pointer as last argument. So we need to use a dummy acl
	 * struct here (we make it static so it does not need to be
	 * instantiated or malloced each time this function is
	 * called). Btw: the count parameter does not seem to matter...
	 */
	*count = acl(CONST_DISCARD(char *, name), ACL_CNT, 0, &dummy_ace);
	if (*count < 0) {
		DEBUG(10, ("acl ACL_CNT failed: %s\n", strerror(errno)));
		goto done;
	}
	*hpux_acl = hpux_acl_init(*count);
	if (*hpux_acl == NULL) {
		DEBUG(10, ("error allocating memory for hpux acl...\n"));
		goto done;
	}
	*count = acl(CONST_DISCARD(char *, name), ACL_GET, *count, *hpux_acl);
	if (*count < 0) {
		DEBUG(10, ("acl ACL_GET failed: %s\n", strerror(errno)));
		goto done;
	}
	result = True;

 done:
        DEBUG(10, ("hpux_acl_get_file %s.\n",
		   ((result == True) ? "succeeded" : "failed" )));
	return result;
}




/*
 * Add entries to a hpux ACL.
 *
 * Entries are directly added to the hpuxacl parameter.
 * if memory allocation fails, this may result in hpuxacl 
 * being NULL. if the resulting acl is to be checked and is 
 * not valid, it is kept in hpuxacl but False is returned.
 *
 * The type of ACEs (access/default) to be added to the ACL can 
 * be selected via the type parameter. 
 * I use the SMB_ACL_TYPE_T type here. Since SMB_ACL_TYPE_ACCESS
 * is defined as "0", this means that one can only add either
 * access or default ACEs from the given ACL, not both at the same 
 * time. If it should become necessary to add all of an ACL, one 
 * would have to replace this parameter by another type.
 */
static bool hpux_add_to_acl(HPUX_ACL_T *hpux_acl, int *count,
			       HPUX_ACL_T add_acl, int add_count, 
			       SMB_ACL_TYPE_T type)
{
	int i;
	
	if ((type != SMB_ACL_TYPE_ACCESS) && (type != SMB_ACL_TYPE_DEFAULT)) 
	{
		DEBUG(10, ("invalid acl type given: %d\n", type));
		errno = EINVAL;
		return False;
	}
	for (i = 0; i < add_count; i++) {
		if (!_IS_OF_TYPE(add_acl[i], type)) {
			continue;
		}
		ADD_TO_ARRAY(NULL, HPUX_ACE_T, add_acl[i], 
			     hpux_acl, count);
		if (hpux_acl == NULL) {
			DEBUG(10, ("error enlarging acl.\n"));
			errno = ENOMEM;
			return False;
		}
	}
	return True;
}


/* 
 * sort the ACL and check it for validity
 *
 * [original comment from lib/sysacls.c:]
 * 
 * if it's a minimal ACL with only 4 entries then we
 * need to recalculate the mask permissions to make
 * sure that they are the same as the GROUP_OBJ
 * permissions as required by the UnixWare acl() system call.
 *
 * (note: since POSIX allows minimal ACLs which only contain
 * 3 entries - ie there is no mask entry - we should, in theory,
 * check for this and add a mask entry if necessary - however
 * we "know" that the caller of this interface always specifies
 * a mask, so in practice "this never happens" (tm) - if it *does*
 * happen aclsort() will fail and return an error and someone will
 * have to fix it...)
 */
static bool hpux_acl_sort(HPUX_ACL_T hpux_acl, int count)
{
	int fixmask = (count <= 4);

	if (hpux_internal_aclsort(count, fixmask, hpux_acl) != 0) {
		errno = EINVAL;
		return False;
	}
	return True;
}


/*
 * Helpers for hpux_internal_aclsort:
 *   - hpux_count_obj
 *   - hpux_swap_acl_entries
 *   - hpux_prohibited_duplicate_type
 *   - hpux_get_needed_class_perm
 */

/* hpux_count_obj:
 * Counts the different number of objects in a given array of ACL
 * structures.
 * Inputs:
 *
 * acl_count      - Count of ACLs in the array of ACL strucutres.
 * aclp           - Array of ACL structures.
 * acl_type_count - Pointer to acl_types structure. Should already be
 *                  allocated.
 * Output: 
 *
 * acl_type_count - This structure is filled up with counts of various 
 *                  acl types.
 */

static void hpux_count_obj(int acl_count, HPUX_ACL_T aclp, struct hpux_acl_types *acl_type_count)
{
	int i;

	memset(acl_type_count, 0, sizeof(struct hpux_acl_types));

	for(i=0;i<acl_count;i++) {
		switch(aclp[i].a_type) {
		case USER: 
			acl_type_count->n_user++;
			break;
		case USER_OBJ: 
			acl_type_count->n_user_obj++;
			break;
		case DEF_USER_OBJ: 
			acl_type_count->n_def_user_obj++;
			break;
		case GROUP: 
			acl_type_count->n_group++;
			break;
		case GROUP_OBJ: 
			acl_type_count->n_group_obj++;
			break;
		case DEF_GROUP_OBJ: 
			acl_type_count->n_def_group_obj++;
			break;
		case OTHER_OBJ: 
			acl_type_count->n_other_obj++;
			break;
		case DEF_OTHER_OBJ: 
			acl_type_count->n_def_other_obj++;
			break;
		case CLASS_OBJ:
			acl_type_count->n_class_obj++;
			break;
		case DEF_CLASS_OBJ:
			acl_type_count->n_def_class_obj++;
			break;
		case DEF_USER:
			acl_type_count->n_def_user++;
			break;
		case DEF_GROUP:
			acl_type_count->n_def_group++;
			break;
		default: 
			acl_type_count->n_illegal_obj++;
			break;
		}
	}
}

/* hpux_swap_acl_entries:  Swaps two ACL entries. 
 *
 * Inputs: aclp0, aclp1 - ACL entries to be swapped.
 */

static void hpux_swap_acl_entries(HPUX_ACE_T *aclp0, HPUX_ACE_T *aclp1)
{
	HPUX_ACE_T temp_acl;

	temp_acl.a_type = aclp0->a_type;
	temp_acl.a_id = aclp0->a_id;
	temp_acl.a_perm = aclp0->a_perm;

	aclp0->a_type = aclp1->a_type;
	aclp0->a_id = aclp1->a_id;
	aclp0->a_perm = aclp1->a_perm;

	aclp1->a_type = temp_acl.a_type;
	aclp1->a_id = temp_acl.a_id;
	aclp1->a_perm = temp_acl.a_perm;
}

/* hpux_prohibited_duplicate_type
 * Identifies if given ACL type can have duplicate entries or 
 * not.
 *
 * Inputs: acl_type - ACL Type.
 *
 * Outputs: 
 *
 * Return.. 
 *
 * True - If the ACL type matches any of the prohibited types.
 * False - If the ACL type doesn't match any of the prohibited types.
 */ 

static bool hpux_prohibited_duplicate_type(int acl_type)
{
	switch(acl_type) {
		case USER:
		case GROUP:
		case DEF_USER: 
		case DEF_GROUP:
			return True;
		default:
			return False;
	}
}

/* hpux_get_needed_class_perm
 * Returns the permissions of a ACL structure only if the ACL
 * type matches one of the pre-determined types for computing 
 * CLASS_OBJ permissions.
 *
 * Inputs: aclp - Pointer to ACL structure.
 */

static int hpux_get_needed_class_perm(struct acl *aclp)
{
	switch(aclp->a_type) {
		case USER: 
		case GROUP_OBJ: 
		case GROUP: 
		case DEF_USER_OBJ: 
		case DEF_USER:
		case DEF_GROUP_OBJ: 
		case DEF_GROUP:
		case DEF_CLASS_OBJ:
		case DEF_OTHER_OBJ: 
			return aclp->a_perm;
		default: 
			return 0;
	}
}

/* hpux_internal_aclsort: aclsort for HPUX.
 *
 * -> The aclsort() system call is availabe on the latest HPUX General
 * -> Patch Bundles. So for HPUX, we developed our version of aclsort 
 * -> function. Because, we don't want to update to a new 
 * -> HPUX GR bundle just for aclsort() call.
 *
 * aclsort sorts the array of ACL structures as per the description in
 * aclsort man page. Refer to aclsort man page for more details
 *
 * Inputs:
 *
 * acl_count - Count of ACLs in the array of ACL structures.
 * calclass  - If this is not zero, then we compute the CLASS_OBJ
 *             permissions.
 * aclp      - Array of ACL structures.
 *
 * Outputs:
 *
 * aclp     - Sorted array of ACL structures.
 *
 * Outputs:
 *
 * Returns 0 for success -1 for failure. Prints a message to the Samba
 * debug log in case of failure.
 */

static int hpux_internal_aclsort(int acl_count, int calclass, HPUX_ACL_T aclp)
{
	struct hpux_acl_types acl_obj_count;
	int n_class_obj_perm = 0;
	int i, j;
 
	DEBUG(10,("Entering hpux_internal_aclsort. (calclass = %d)\n", calclass));

	if (hpux_aclsort_call_present()) {
		DEBUG(10, ("calling hpux aclsort\n"));
		return aclsort(acl_count, calclass, aclp);
	}

	DEBUG(10, ("using internal aclsort\n"));

	if(!acl_count) {
		DEBUG(10,("Zero acl count passed. Returning Success\n"));
		return 0;
	}

	if(aclp == NULL) {
		DEBUG(0,("Null ACL pointer in hpux_acl_sort. Returning Failure. \n"));
		return -1;
	}

	/* Count different types of ACLs in the ACLs array */

	hpux_count_obj(acl_count, aclp, &acl_obj_count);

	/* There should be only one entry each of type USER_OBJ, GROUP_OBJ, 
	 * CLASS_OBJ and OTHER_OBJ 
	 */

	if ( (acl_obj_count.n_user_obj  != 1) || 
		(acl_obj_count.n_group_obj != 1) || 
		(acl_obj_count.n_class_obj != 1) ||
		(acl_obj_count.n_other_obj != 1) ) 
	{
		DEBUG(0,("hpux_internal_aclsort: More than one entry or no entries for \
USER OBJ or GROUP_OBJ or OTHER_OBJ or CLASS_OBJ\n"));
		return -1;
	}

	/* If any of the default objects are present, there should be only
	 * one of them each.
	 */

	if ( (acl_obj_count.n_def_user_obj  > 1) || 
		(acl_obj_count.n_def_group_obj > 1) || 
		(acl_obj_count.n_def_other_obj > 1) || 
		(acl_obj_count.n_def_class_obj > 1) ) 
	{
		DEBUG(0,("hpux_internal_aclsort: More than one entry for DEF_CLASS_OBJ \
or DEF_USER_OBJ or DEF_GROUP_OBJ or DEF_OTHER_OBJ\n"));
		return -1;
	}

	/* We now have proper number of OBJ and DEF_OBJ entries. Now sort the acl 
	 * structures.  
	 *
	 * Sorting crieteria - First sort by ACL type. If there are multiple entries of
	 * same ACL type, sort by ACL id.
	 *
	 * I am using the trival kind of sorting method here because, performance isn't 
	 * really effected by the ACLs feature. More over there aren't going to be more
	 * than 17 entries on HPUX. 
	 */

	for(i=0; i<acl_count;i++) {
		for (j=i+1; j<acl_count; j++) {
			if( aclp[i].a_type > aclp[j].a_type ) {
				/* ACL entries out of order, swap them */
				hpux_swap_acl_entries((aclp+i), (aclp+j));
			} else if ( aclp[i].a_type == aclp[j].a_type ) {
				/* ACL entries of same type, sort by id */
				if(aclp[i].a_id > aclp[j].a_id) {
					hpux_swap_acl_entries((aclp+i), (aclp+j));
				} else if (aclp[i].a_id == aclp[j].a_id) {
					/* We have a duplicate entry. */
					if(hpux_prohibited_duplicate_type(aclp[i].a_type)) {
						DEBUG(0, ("hpux_internal_aclsort: Duplicate entry: Type(hex): %x Id: %d\n",
							aclp[i].a_type, aclp[i].a_id));
						return -1;
					}
				}
			}
		}
	}

	/* set the class obj permissions to the computed one. */
	if(calclass) {
		int n_class_obj_index = -1;

		for(i=0;i<acl_count;i++) {
			n_class_obj_perm |= hpux_get_needed_class_perm((aclp+i));

			if(aclp[i].a_type == CLASS_OBJ)
				n_class_obj_index = i;
		}
		aclp[n_class_obj_index].a_perm = n_class_obj_perm;
	}

	return 0;
}


/* 
 * hpux_acl_call_present:
 *
 * This checks if the POSIX ACL system call is defined
 * which basically corresponds to whether JFS 3.3 or
 * higher is installed. If acl() was called when it
 * isn't defined, it causes the process to core dump
 * so it is important to check this and avoid acl()
 * calls if it isn't there.                            
 */

static bool hpux_acl_call_present(void)
{

	shl_t handle = NULL;
	void *value;
	int ret_val=0;
	static bool already_checked = False;

	if(already_checked)
		return True;

	errno = 0;

	ret_val = shl_findsym(&handle, "acl", TYPE_PROCEDURE, &value);

	if(ret_val != 0) {
		DEBUG(5, ("hpux_acl_call_present: shl_findsym() returned %d, errno = %d, error %s\n",
			ret_val, errno, strerror(errno)));
		DEBUG(5,("hpux_acl_call_present: acl() system call is not present. Check if you have JFS 3.3 and above?\n"));
		errno = ENOSYS;
		return False;
	}

	DEBUG(10,("hpux_acl_call_present: acl() system call is present. We have JFS 3.3 or above \n"));

	already_checked = True;
	return True;
}

/* 
 * runtime check for presence of aclsort library call. 
 * same code as for acl call. if there are more of these,
 * a dispatcher function could be handy...
 */

static bool hpux_aclsort_call_present(void) 
{
	shl_t handle = NULL;
	void *value;
	int ret_val = 0;
	static bool already_checked = False;

	if (already_checked) {
		return True;
	}

	errno = 0;
	ret_val = shl_findsym(&handle, "aclsort", TYPE_PROCEDURE, &value);
	if (ret_val != 0) {
		DEBUG(5, ("hpux_aclsort_call_present: shl_findsym "
			"returned %d, errno = %d, error %s", 
			ret_val, errno, strerror(errno)));
		DEBUG(5, ("hpux_aclsort_call_present: "
			"aclsort() function not available.\n"));
		return False;
	}
	DEBUG(10,("hpux_aclsort_call_present: aclsort() function present.\n"));
	already_checked = True;
	return True;
}

#if 0
/*
 * acl check function:
 *   unused at the moment but could be used to get more
 *   concrete error messages for debugging...
 *   (acl sort just says that the acl is invalid...)
 */
static bool hpux_acl_check(HPUX_ACL_T hpux_acl, int count)
{
	int check_rc;
	int check_which;
	
	check_rc = aclcheck(hpux_acl, count, &check_which);
	if (check_rc != 0) {
		DEBUG(10, ("acl is not valid:\n"));
		DEBUGADD(10, (" - return code: %d\n", check_rc));
		DEBUGADD(10, (" - which: %d\n", check_which));
		if (check_which != -1) {
			DEBUGADD(10, (" - invalid entry:\n"));
			DEBUGADD(10, ("   * type: %d:\n", 
				      hpux_acl[check_which].a_type));
			DEBUGADD(10, ("   * id: %d\n",
				      hpux_acl[check_which].a_id));
			DEBUGADD(10, ("   * perm: 0o%o\n",
				      hpux_acl[check_which].a_perm));
		}
		return False;
	}
	return True;
}
#endif

/* VFS operations structure */

static vfs_op_tuple hpuxacl_op_tuples[] = {
	/* Disk operations */
	{SMB_VFS_OP(hpuxacl_sys_acl_get_file),
	 SMB_VFS_OP_SYS_ACL_GET_FILE,
	 SMB_VFS_LAYER_TRANSPARENT},

	{SMB_VFS_OP(hpuxacl_sys_acl_get_fd),
	 SMB_VFS_OP_SYS_ACL_GET_FD,
	 SMB_VFS_LAYER_TRANSPARENT},

	{SMB_VFS_OP(hpuxacl_sys_acl_set_file),
	 SMB_VFS_OP_SYS_ACL_SET_FILE,
	 SMB_VFS_LAYER_TRANSPARENT},

	{SMB_VFS_OP(hpuxacl_sys_acl_set_fd),
	 SMB_VFS_OP_SYS_ACL_SET_FD,
	 SMB_VFS_LAYER_TRANSPARENT},

	{SMB_VFS_OP(hpuxacl_sys_acl_delete_def_file),
	 SMB_VFS_OP_SYS_ACL_DELETE_DEF_FILE,
	 SMB_VFS_LAYER_TRANSPARENT},

	{SMB_VFS_OP(NULL),
	 SMB_VFS_OP_NOOP,
	 SMB_VFS_LAYER_NOOP}
};

NTSTATUS vfs_hpuxacl_init(void)
{
	return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "hpuxacl",
				hpuxacl_op_tuples);
}

/* ENTE */