summaryrefslogtreecommitdiff
path: root/source3/smbd/quotas.c
blob: adfecfe4184ee021b39e617869ad89ce31fac20d (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
/* 
   Unix SMB/CIFS implementation.
   support for quotas
   Copyright (C) Andrew Tridgell 1992-1998
   
   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 is one of the most system dependent parts of Samba, and its
 * done a litle differently. Each system has its own way of doing 
 * things :-(
 */

#include "includes.h"
#include "smbd/smbd.h"
#include "system/filesys.h"

#undef DBGC_CLASS
#define DBGC_CLASS DBGC_QUOTA

#ifndef HAVE_SYS_QUOTAS

/* just a quick hack because sysquotas.h is included before linux/quota.h */
#ifdef QUOTABLOCK_SIZE
#undef QUOTABLOCK_SIZE
#endif

#ifdef WITH_QUOTAS

#if defined(VXFS_QUOTA)

/*
 * In addition to their native filesystems, some systems have Veritas VxFS.
 * Declare here, define at end: reduces likely "include" interaction problems.
 *	David Lee <T.D.Lee@durham.ac.uk>
 */
bool disk_quotas_vxfs(const char *name, char *path, uint64_t *bsize, uint64_t *dfree, uint64_t *dsize);

#endif /* VXFS_QUOTA */


#if defined(SUNOS5) || defined(SUNOS4)

#include <fcntl.h>
#include <sys/param.h>
#if defined(SUNOS5)
#include <sys/fs/ufs_quota.h>
#include <sys/mnttab.h>
#include <sys/mntent.h>
#else /* defined(SUNOS4) */
#include <ufs/quota.h>
#include <mntent.h>
#endif

#if defined(SUNOS5)

/****************************************************************************
 Allows querying of remote hosts for quotas on NFS mounted shares.
 Supports normal NFS and AMD mounts.
 Alan Romeril <a.romeril@ic.ac.uk> July 2K.
****************************************************************************/

#include <rpc/rpc.h>
#include <rpc/types.h>
#include <rpcsvc/rquota.h>
#include <rpc/nettype.h>
#include <rpc/xdr.h>

static int my_xdr_getquota_rslt(XDR *xdrsp, struct getquota_rslt *gqr)
{
	int quotastat;

	if (!xdr_int(xdrsp, &quotastat)) {
		DEBUG(6,("nfs_quotas: Status bad or zero\n"));
		return 0;
	}
	gqr->status = quotastat;

	if (!xdr_int(xdrsp, &gqr->getquota_rslt_u.gqr_rquota.rq_bsize)) {
		DEBUG(6,("nfs_quotas: Block size bad or zero\n"));
		return 0;
	}
	if (!xdr_bool(xdrsp, &gqr->getquota_rslt_u.gqr_rquota.rq_active)) {
		DEBUG(6,("nfs_quotas: Active bad or zero\n"));
		return 0;
	}
	if (!xdr_int(xdrsp, &gqr->getquota_rslt_u.gqr_rquota.rq_bhardlimit)) {
		DEBUG(6,("nfs_quotas: Hardlimit bad or zero\n"));
		return 0;
	}
	if (!xdr_int(xdrsp, &gqr->getquota_rslt_u.gqr_rquota.rq_bsoftlimit)) {
		DEBUG(6,("nfs_quotas: Softlimit bad or zero\n"));
		return 0;
	}
	if (!xdr_int(xdrsp, &gqr->getquota_rslt_u.gqr_rquota.rq_curblocks)) {
		DEBUG(6,("nfs_quotas: Currentblocks bad or zero\n"));
		return 0;
	}
	return (1);
}

/* Restricted to SUNOS5 for the moment, I haven`t access to others to test. */
static bool nfs_quotas(char *nfspath, uid_t euser_id, uint64_t *bsize, uint64_t *dfree, uint64_t *dsize)
{
	uid_t uid = euser_id;
	struct dqblk D;
	char *mnttype = nfspath;
	CLIENT *clnt;
	struct getquota_rslt gqr;
	struct getquota_args args;
	char *cutstr, *pathname, *host, *testpath;
	int len;
	static struct timeval timeout = {2,0};
	enum clnt_stat clnt_stat;
	bool ret = True;

	*bsize = *dfree = *dsize = (uint64_t)0;

	len=strcspn(mnttype, ":");
	pathname=strstr(mnttype, ":");
	cutstr = (char *) SMB_MALLOC(len+1);
	if (!cutstr)
		return False;

	memset(cutstr, '\0', len+1);
	host = strncat(cutstr,mnttype, sizeof(char) * len );
	DEBUG(5,("nfs_quotas: looking for mount on \"%s\"\n", cutstr));
	DEBUG(5,("nfs_quotas: of path \"%s\"\n", mnttype));
	testpath=strchr_m(mnttype, ':');
	args.gqa_pathp = testpath+1;
	args.gqa_uid = uid;

	DEBUG(5,("nfs_quotas: Asking for host \"%s\" rpcprog \"%i\" rpcvers \"%i\" network \"%s\"\n", host, RQUOTAPROG, RQUOTAVERS, "udp"));

	if ((clnt = clnt_create(host, RQUOTAPROG, RQUOTAVERS, "udp")) == NULL) {
		ret = False;
		goto out;
	}

	clnt->cl_auth = authunix_create_default();
	DEBUG(9,("nfs_quotas: auth_success\n"));

	clnt_stat=clnt_call(clnt, RQUOTAPROC_GETQUOTA, my_xdr_getquota_args, (caddr_t)&args, my_xdr_getquota_rslt, (caddr_t)&gqr, timeout);

	if (clnt_stat != RPC_SUCCESS) {
		DEBUG(9,("nfs_quotas: clnt_call fail\n"));
		ret = False;
		goto out;
	}

	/*
	 * gqr.status returns 0 if the rpc call fails, 1 if quotas exist, 2 if there is
	 * no quota set, and 3 if no permission to get the quota.  If 0 or 3 return
	 * something sensible.
	 */

	switch (gqr.status) {
	case 0:
		DEBUG(9,("nfs_quotas: Remote Quotas Failed!  Error \"%i\" \n", gqr.status));
		ret = False;
		goto out;

	case 1:
		DEBUG(9,("nfs_quotas: Good quota data\n"));
		D.dqb_bsoftlimit = gqr.getquota_rslt_u.gqr_rquota.rq_bsoftlimit;
		D.dqb_bhardlimit = gqr.getquota_rslt_u.gqr_rquota.rq_bhardlimit;
		D.dqb_curblocks = gqr.getquota_rslt_u.gqr_rquota.rq_curblocks;
		break;

	case 2:
	case 3:
		D.dqb_bsoftlimit = 1;
		D.dqb_curblocks = 1;
		DEBUG(9,("nfs_quotas: Remote Quotas returned \"%i\" \n", gqr.status));
		break;

	default:
		DEBUG(9,("nfs_quotas: Remote Quotas Questionable!  Error \"%i\" \n", gqr.status ));
		break;
	}

	DEBUG(10,("nfs_quotas: Let`s look at D a bit closer... status \"%i\" bsize \"%i\" active? \"%i\" bhard \"%i\" bsoft \"%i\" curb \"%i\" \n",
			gqr.status,
			gqr.getquota_rslt_u.gqr_rquota.rq_bsize,
			gqr.getquota_rslt_u.gqr_rquota.rq_active,
			gqr.getquota_rslt_u.gqr_rquota.rq_bhardlimit,
			gqr.getquota_rslt_u.gqr_rquota.rq_bsoftlimit,
			gqr.getquota_rslt_u.gqr_rquota.rq_curblocks));

	*bsize = gqr.getquota_rslt_u.gqr_rquota.rq_bsize;
	*dsize = D.dqb_bsoftlimit;

	if (D.dqb_curblocks == 1)
		*bsize = 512;

	if (D.dqb_curblocks > D.dqb_bsoftlimit) {
		*dfree = 0;
		*dsize = D.dqb_curblocks;
	} else
		*dfree = D.dqb_bsoftlimit - D.dqb_curblocks;

  out:

	if (clnt) {
		if (clnt->cl_auth)
			auth_destroy(clnt->cl_auth);
		clnt_destroy(clnt);
	}

	DEBUG(5,("nfs_quotas: For path \"%s\" returning  bsize %.0f, dfree %.0f, dsize %.0f\n",args.gqa_pathp,(double)*bsize,(double)*dfree,(double)*dsize));

	SAFE_FREE(cutstr);
	DEBUG(10,("nfs_quotas: End of nfs_quotas\n" ));
	return ret;
}
#endif

/****************************************************************************
try to get the disk space from disk quotas (SunOS & Solaris2 version)
Quota code by Peter Urbanec (amiga@cse.unsw.edu.au).
****************************************************************************/

bool disk_quotas(const char *path,
		uint64_t *bsize,
		uint64_t *dfree,
		uint64_t *dsize)
{
	uid_t euser_id;
	int ret;
	struct dqblk D;
#if defined(SUNOS5)
	struct quotctl command;
	int file;
	struct mnttab mnt;
#else /* SunOS4 */
	struct mntent *mnt;
#endif
	char *name = NULL;
	FILE *fd;
	SMB_STRUCT_STAT sbuf;
	SMB_DEV_T devno;
	bool found = false;

	euser_id = geteuid();

	if (sys_stat(path, &sbuf, false) == -1) {
		return false;
	}

	devno = sbuf.st_ex_dev ;
	DEBUG(5,("disk_quotas: looking for path \"%s\" devno=%x\n",
		path, (unsigned int)devno));
#if defined(SUNOS5)
	if ((fd = fopen(MNTTAB, "r")) == NULL) {
		return false;
	}

	while (getmntent(fd, &mnt) == 0) {
		if (sys_stat(mnt.mnt_mountp, &sbuf, false) == -1) {
			continue;
		}

		DEBUG(5,("disk_quotas: testing \"%s\" devno=%x\n",
			mnt.mnt_mountp, (unsigned int)devno));

		/* quotas are only on vxfs, UFS or NFS */
		if ((sbuf.st_ex_dev == devno) && (
			strcmp( mnt.mnt_fstype, MNTTYPE_UFS ) == 0 ||
			strcmp( mnt.mnt_fstype, "nfs" ) == 0    ||
			strcmp( mnt.mnt_fstype, "vxfs" ) == 0 )) {
				found = true;
				name = talloc_asprintf(talloc_tos(),
						"%s/quotas",
						mnt.mnt_mountp);
				break;
		}
	}

	fclose(fd);
#else /* SunOS4 */
	if ((fd = setmntent(MOUNTED, "r")) == NULL) {
		return false;
	}

	while ((mnt = getmntent(fd)) != NULL) {
		if (sys_stat(mnt->mnt_dir, &sbuf, false) == -1) {
			continue;
		}
		DEBUG(5,("disk_quotas: testing \"%s\" devno=%x\n",
					mnt->mnt_dir,
					(unsigned int)sbuf.st_ex_dev));
		if (sbuf.st_ex_dev == devno) {
			found = true;
			name = talloc_strdup(talloc_tos(),
					mnt->mnt_fsname);
			break;
		}
	}

	endmntent(fd);
#endif
	if (!found) {
		return false;
	}

	if (!name) {
		return false;
	}
	become_root();

#if defined(SUNOS5)
	if (strcmp(mnt.mnt_fstype, "nfs") == 0) {
		bool retval;
		DEBUG(5,("disk_quotas: looking for mountpath (NFS) \"%s\"\n",
					mnt.mnt_special));
		retval = nfs_quotas(mnt.mnt_special,
				euser_id, bsize, dfree, dsize);
		unbecome_root();
		return retval;
	}

	DEBUG(5,("disk_quotas: looking for quotas file \"%s\"\n", name));
	if((file=open(name, O_RDONLY,0))<0) {
		unbecome_root();
		return false;
	}
	command.op = Q_GETQUOTA;
	command.uid = euser_id;
	command.addr = (caddr_t) &D;
	ret = ioctl(file, Q_QUOTACTL, &command);
	close(file);
#else
	DEBUG(5,("disk_quotas: trying quotactl on device \"%s\"\n", name));
	ret = quotactl(Q_GETQUOTA, name, euser_id, &D);
#endif

	unbecome_root();

	if (ret < 0) {
		DEBUG(5,("disk_quotas ioctl (Solaris) failed. Error = %s\n",
					strerror(errno) ));

#if defined(SUNOS5) && defined(VXFS_QUOTA)
		/* If normal quotactl() fails, try vxfs private calls */
		set_effective_uid(euser_id);
		DEBUG(5,("disk_quotas: mount type \"%s\"\n", mnt.mnt_fstype));
		if ( 0 == strcmp ( mnt.mnt_fstype, "vxfs" )) {
			bool retval;
			retval = disk_quotas_vxfs(name, path,
					bsize, dfree, dsize);
			return retval;
		}
#else
		return false;
#endif
	}

	/* If softlimit is zero, set it equal to hardlimit.
	 */

	if (D.dqb_bsoftlimit==0) {
		D.dqb_bsoftlimit = D.dqb_bhardlimit;
	}

	/* Use softlimit to determine disk space. A user exceeding the quota
	 * is told that there's no space left. Writes might actually work for
	 * a bit if the hardlimit is set higher than softlimit. Effectively
	 * the disk becomes made of rubber latex and begins to expand to
	 * accommodate the user :-)
	 */

	if (D.dqb_bsoftlimit==0)
		return(False);
	*bsize = DEV_BSIZE;
	*dsize = D.dqb_bsoftlimit;

	if (D.dqb_curblocks > D.dqb_bsoftlimit) {
		*dfree = 0;
		*dsize = D.dqb_curblocks;
	} else {
		*dfree = D.dqb_bsoftlimit - D.dqb_curblocks;
	}

	DEBUG(5,("disk_quotas for path \"%s\" returning "
		"bsize %.0f, dfree %.0f, dsize %.0f\n",
		path,(double)*bsize,(double)*dfree,(double)*dsize));

	return true;
}


#elif defined(OSF1)
#include <ufs/quota.h>

/****************************************************************************
try to get the disk space from disk quotas - OSF1 version
****************************************************************************/

bool disk_quotas(const char *path, uint64_t *bsize, uint64_t *dfree, uint64_t *dsize)
{
  int r, save_errno;
  struct dqblk D;
  SMB_STRUCT_STAT S;
  uid_t euser_id;

  /*
   * This code presumes that OSF1 will only
   * give out quota info when the real uid 
   * matches the effective uid. JRA.
   */
  euser_id = geteuid();
  save_re_uid();
  if (set_re_uid() != 0) return False;

  r= quotactl(path,QCMD(Q_GETQUOTA, USRQUOTA),euser_id,(char *) &D);
  if (r) {
     save_errno = errno;
  }

  restore_re_uid();

  *bsize = DEV_BSIZE;

  if (r)
  {
      if (save_errno == EDQUOT)   /* disk quota exceeded */
      {
         *dfree = 0;
         *dsize = D.dqb_curblocks;
         return (True);
      }
      else
         return (False);  
  }

  /* If softlimit is zero, set it equal to hardlimit.
   */

  if (D.dqb_bsoftlimit==0)
    D.dqb_bsoftlimit = D.dqb_bhardlimit;

  /* Use softlimit to determine disk space, except when it has been exceeded */

  if (D.dqb_bsoftlimit==0)
    return(False);

  if ((D.dqb_curblocks>D.dqb_bsoftlimit)) {
    *dfree = 0;
    *dsize = D.dqb_curblocks;
  } else {
    *dfree = D.dqb_bsoftlimit - D.dqb_curblocks;
    *dsize = D.dqb_bsoftlimit;
  }
  return (True);
}

#elif defined (IRIX6)
/****************************************************************************
try to get the disk space from disk quotas (IRIX 6.2 version)
****************************************************************************/

#include <sys/quota.h>
#include <mntent.h>

bool disk_quotas(const char *path, uint64_t *bsize, uint64_t *dfree, uint64_t *dsize)
{
  uid_t euser_id;
  int r;
  struct dqblk D;
  struct fs_disk_quota        F;
  SMB_STRUCT_STAT S;
  FILE *fp;
  struct mntent *mnt;
  SMB_DEV_T devno;
  int found;
  
  /* find the block device file */
  
  if ( sys_stat(path, &S, false) == -1 ) {
    return(False) ;
  }

  devno = S.st_ex_dev ;
  
  fp = setmntent(MOUNTED,"r");
  found = False ;
  
  while ((mnt = getmntent(fp))) {
    if ( sys_stat(mnt->mnt_dir, &S, false) == -1 )
      continue ;
    if (S.st_ex_dev == devno) {
      found = True ;
      break ;
    }
  }
  endmntent(fp) ;
  
  if (!found) {
    return(False);
  }

  euser_id=geteuid();
  become_root();

  /* Use softlimit to determine disk space, except when it has been exceeded */

  *bsize = 512;

  if ( 0 == strcmp ( mnt->mnt_type, "efs" ))
  {
    r=quotactl (Q_GETQUOTA, mnt->mnt_fsname, euser_id, (caddr_t) &D);

    unbecome_root();

    if (r==-1)
      return(False);
        
    /* Use softlimit to determine disk space, except when it has been exceeded */
    if (
        (D.dqb_bsoftlimit && D.dqb_curblocks>=D.dqb_bsoftlimit) ||
        (D.dqb_bhardlimit && D.dqb_curblocks>=D.dqb_bhardlimit) ||
        (D.dqb_fsoftlimit && D.dqb_curfiles>=D.dqb_fsoftlimit) ||
        (D.dqb_fhardlimit && D.dqb_curfiles>=D.dqb_fhardlimit)
       )
    {
      *dfree = 0;
      *dsize = D.dqb_curblocks;
    }
    else if (D.dqb_bsoftlimit==0 && D.dqb_bhardlimit==0)
    {
      return(False);
    }
    else 
    {
      *dfree = D.dqb_bsoftlimit - D.dqb_curblocks;
      *dsize = D.dqb_bsoftlimit;
    }

  }
  else if ( 0 == strcmp ( mnt->mnt_type, "xfs" ))
  {
    r=quotactl (Q_XGETQUOTA, mnt->mnt_fsname, euser_id, (caddr_t) &F);

    unbecome_root();

    if (r==-1)
    {
      DEBUG(5, ("quotactl for uid=%u: %s", euser_id, strerror(errno)));
      return(False);
    }
        
    /* No quota for this user. */
    if (F.d_blk_softlimit==0 && F.d_blk_hardlimit==0)
    {
      return(False);
    }

    /* Use softlimit to determine disk space, except when it has been exceeded */
    if (
        (F.d_blk_softlimit && F.d_bcount>=F.d_blk_softlimit) ||
        (F.d_blk_hardlimit && F.d_bcount>=F.d_blk_hardlimit) ||
        (F.d_ino_softlimit && F.d_icount>=F.d_ino_softlimit) ||
        (F.d_ino_hardlimit && F.d_icount>=F.d_ino_hardlimit)
       )
    {
      *dfree = 0;
      *dsize = F.d_bcount;
    }
    else 
    {
      *dfree = (F.d_blk_softlimit - F.d_bcount);
      *dsize = F.d_blk_softlimit ? F.d_blk_softlimit : F.d_blk_hardlimit;
    }

  }
  else
  {
	  unbecome_root();
	  return(False);
  }

  return (True);

}

#else

#if           AIX
/* AIX quota patch from Ole Holm Nielsen <ohnielse@fysik.dtu.dk> */
#include <jfs/quota.h>
/* AIX 4.X: Rename members of the dqblk structure (ohnielse@fysik.dtu.dk) */
#define dqb_curfiles dqb_curinodes
#define dqb_fhardlimit dqb_ihardlimit
#define dqb_fsoftlimit dqb_isoftlimit
#ifdef _AIXVERSION_530 
#include <sys/statfs.h>
#include <sys/vmount.h>
#endif /* AIX 5.3 */
#else /* !__FreeBSD__ && !AIX && !__OpenBSD__ && !__DragonFly__ */
#include <sys/quota.h>
#include <devnm.h>
#endif


/****************************************************************************
try to get the disk space from disk quotas - default version
****************************************************************************/

bool disk_quotas(const char *path, uint64_t *bsize, uint64_t *dfree, uint64_t *dsize)
{
  int r;
  struct dqblk D;
  uid_t euser_id;
#if !defined(__FreeBSD__) && !defined(AIX) && !defined(__OpenBSD__) && !defined(__DragonFly__)
  char dev_disk[256];
  SMB_STRUCT_STAT S;

  /* find the block device file */

#ifdef HPUX
  /* Need to set the cache flag to 1 for HPUX. Seems
   * to have a significant performance boost when
   * lstat calls on /dev access this function.
   */
  if ((sys_stat(path, &S, false)<0)
      || (devnm(S_IFBLK, S.st_ex_dev, dev_disk, 256, 1)<0))
#else
  if ((sys_stat(path, &S, false)<0)
      || (devnm(S_IFBLK, S.st_ex_dev, dev_disk, 256, 0)<0))
	return (False);
#endif /* ifdef HPUX */

#endif /* !defined(__FreeBSD__) && !defined(AIX) && !defined(__OpenBSD__) && !defined(__DragonFly__) */

  euser_id = geteuid();

#ifdef HPUX
  /* for HPUX, real uid must be same as euid to execute quotactl for euid */
  save_re_uid();
  if (set_re_uid() != 0) return False;
  
  r=quotactl(Q_GETQUOTA, dev_disk, euser_id, &D);

  restore_re_uid();
#else 
#if   defined(AIX)
  /* AIX has both USER and GROUP quotas: 
     Get the USER quota (ohnielse@fysik.dtu.dk) */
#ifdef _AIXVERSION_530
  {
    struct statfs statbuf;
    quota64_t user_quota;
    if (statfs(path,&statbuf) != 0)
      return False;
    if(statbuf.f_vfstype == MNT_J2)
    {
    /* For some reason we need to be root for jfs2 */
      become_root();
      r = quotactl(path,QCMD(Q_J2GETQUOTA,USRQUOTA),euser_id,(char *) &user_quota);
      unbecome_root();
    /* Copy results to old struct to let the following code work as before */
      D.dqb_curblocks  = user_quota.bused;
      D.dqb_bsoftlimit = user_quota.bsoft;
      D.dqb_bhardlimit = user_quota.bhard;
      D.dqb_curfiles   = user_quota.iused;
      D.dqb_fsoftlimit = user_quota.isoft;
      D.dqb_fhardlimit = user_quota.ihard;
    }
    else if(statbuf.f_vfstype == MNT_JFS)
    {
#endif /* AIX 5.3 */
  save_re_uid();
  if (set_re_uid() != 0) 
    return False;
  r= quotactl(path,QCMD(Q_GETQUOTA,USRQUOTA),euser_id,(char *) &D);
  restore_re_uid();
#ifdef _AIXVERSION_530
    }
    else
      r = 1; /* Fail for other FS-types */
  }
#endif /* AIX 5.3 */
#else /* !__FreeBSD__ && !AIX && !__OpenBSD__ && !__DragonFly__ */
  r=quotactl(Q_GETQUOTA, dev_disk, euser_id, &D);
#endif /* !__FreeBSD__ && !AIX && !__OpenBSD__ && !__DragonFly__ */
#endif /* HPUX */

  /* Use softlimit to determine disk space, except when it has been exceeded */
  *bsize = 1024;

  if (r)
    {
      if (errno == EDQUOT) 
	{
 	  *dfree =0;
 	  *dsize =D.dqb_curblocks;
 	  return (True);
	}
      else return(False);
    }

  /* If softlimit is zero, set it equal to hardlimit.
   */

  if (D.dqb_bsoftlimit==0)
    D.dqb_bsoftlimit = D.dqb_bhardlimit;

  if (D.dqb_bsoftlimit==0)
    return(False);
  /* Use softlimit to determine disk space, except when it has been exceeded */
  if ((D.dqb_curblocks>D.dqb_bsoftlimit)
||((D.dqb_curfiles>D.dqb_fsoftlimit) && (D.dqb_fsoftlimit != 0))
    ) {
      *dfree = 0;
      *dsize = D.dqb_curblocks;
    }
  else {
    *dfree = D.dqb_bsoftlimit - D.dqb_curblocks;
    *dsize = D.dqb_bsoftlimit;
  }
  return (True);
}

#endif

#if definedr(LINUX) || defined(SUNOS) || defined (__FreeBSD__) || defined(__DragonFly__)
static int my_xdr_getquota_args(XDR *xdrsp, struct getquota_args *args)
{
	if (!xdr_string(xdrsp, &args->gqa_pathp, RQ_PATHLEN ))
		return(0);
	if (!xdr_int(xdrsp, &args->gqa_uid))
		return(0);
	return (1);
}
#endif

#if defined(VXFS_QUOTA)

/****************************************************************************
Try to get the disk space from Veritas disk quotas.
    David Lee <T.D.Lee@durham.ac.uk> August 1999.

Background assumptions:
    Potentially under many Operating Systems.  Initially Solaris 2.

    My guess is that Veritas is largely, though not entirely,
    independent of OS.  So I have separated it out.

    There may be some details.  For example, OS-specific "include" files.

    It is understood that HPUX 10 somehow gets Veritas quotas without
    any special effort; if so, this routine need not be compiled in.
        Dirk De Wachter <Dirk.DeWachter@rug.ac.be>

Warning:
    It is understood that Veritas do not publicly support this ioctl interface.
    Rather their preference would be for the user (us) to call the native
    OS and then for the OS itself to call through to the VxFS filesystem.
    Presumably HPUX 10, see above, does this.

Hints for porting:
    Add your OS to "IFLIST" below.
    Get it to compile successfully:
        Almost certainly "include"s require attention: see SUNOS5.
    In the main code above, arrange for it to be called: see SUNOS5.
    Test!
    
****************************************************************************/

/* "IFLIST"
 * This "if" is a list of ports:
 *	if defined(OS1) || defined(OS2) || ...
 */
#if defined(SUNOS5)

#if defined(SUNOS5)
#include <sys/fs/vx_solaris.h>
#endif
#include <sys/fs/vx_machdep.h>
#include <sys/fs/vx_layout.h>
#include <sys/fs/vx_quota.h>
#include <sys/fs/vx_aioctl.h>
#include <sys/fs/vx_ioctl.h>

bool disk_quotas_vxfs(const char *name, char *path, uint64_t *bsize, uint64_t *dfree, uint64_t *dsize)
{
  uid_t user_id, euser_id;
  int ret;
  struct vx_dqblk D;
  struct vx_quotctl quotabuf;
  struct vx_genioctl genbuf;
  char *qfname;
  int file;

  /*
   * "name" may or may not include a trailing "/quotas".
   * Arranging consistency of calling here in "quotas.c" may not be easy and
   * it might be easier to examine and adjust it here.
   * Fortunately, VxFS seems not to mind at present.
   */
  qfname = talloc_strdup(talloc_tos(), name);
  if (!qfname) {
	  return false;
  }
  /* pstrcat(qfname, "/quotas") ; */	/* possibly examine and adjust "name" */

  euser_id = geteuid();
  set_effective_uid(0);

  DEBUG(5,("disk_quotas: looking for VxFS quotas file \"%s\"\n", qfname));
  if((file=open(qfname, O_RDONLY,0))<0) {
    set_effective_uid(euser_id);
    return(False);
  }
  genbuf.ioc_cmd = VX_QUOTACTL;
  genbuf.ioc_up = (void *) &quotabuf;

  quotabuf.cmd = VX_GETQUOTA;
  quotabuf.uid = euser_id;
  quotabuf.addr = (caddr_t) &D;
  ret = ioctl(file, VX_ADMIN_IOCTL, &genbuf);
  close(file);

  set_effective_uid(euser_id);

  if (ret < 0) {
    DEBUG(5,("disk_quotas ioctl (VxFS) failed. Error = %s\n", strerror(errno) ));
    return(False);
  }

  /* If softlimit is zero, set it equal to hardlimit.
   */

  if (D.dqb_bsoftlimit==0)
    D.dqb_bsoftlimit = D.dqb_bhardlimit;

  /* Use softlimit to determine disk space. A user exceeding the quota is told
   * that there's no space left. Writes might actually work for a bit if the
   * hardlimit is set higher than softlimit. Effectively the disk becomes
   * made of rubber latex and begins to expand to accommodate the user :-)
   */
  DEBUG(5,("disk_quotas for path \"%s\" block c/s/h %ld/%ld/%ld; file c/s/h %ld/%ld/%ld\n",
         path, D.dqb_curblocks, D.dqb_bsoftlimit, D.dqb_bhardlimit,
         D.dqb_curfiles, D.dqb_fsoftlimit, D.dqb_fhardlimit));

  if (D.dqb_bsoftlimit==0)
    return(False);
  *bsize = DEV_BSIZE;
  *dsize = D.dqb_bsoftlimit;

  if (D.dqb_curblocks > D.dqb_bsoftlimit) {
     *dfree = 0;
     *dsize = D.dqb_curblocks;
  } else
    *dfree = D.dqb_bsoftlimit - D.dqb_curblocks;
      
  DEBUG(5,("disk_quotas for path \"%s\" returning  bsize %.0f, dfree %.0f, dsize %.0f\n",
         path,(double)*bsize,(double)*dfree,(double)*dsize));

  return(True);
}

#endif /* SUNOS5 || ... */

#endif /* VXFS_QUOTA */

#else /* WITH_QUOTAS */

bool disk_quotas(const char *path,uint64_t *bsize,uint64_t *dfree,uint64_t *dsize)
{
	(*bsize) = 512; /* This value should be ignored */

	/* And just to be sure we set some values that hopefully */
	/* will be larger that any possible real-world value     */
	(*dfree) = (uint64_t)-1;
	(*dsize) = (uint64_t)-1;

	/* As we have select not to use quotas, allways fail */
	return false;
}
#endif /* WITH_QUOTAS */

#else /* HAVE_SYS_QUOTAS */
/* wrapper to the new sys_quota interface
   this file should be removed later
   */
bool disk_quotas(const char *path,uint64_t *bsize,uint64_t *dfree,uint64_t *dsize)
{
	int r;
	SMB_DISK_QUOTA D;
	unid_t id;

	id.uid = geteuid();

	ZERO_STRUCT(D);
  	r=sys_get_quota(path, SMB_USER_QUOTA_TYPE, id, &D);

	/* Use softlimit to determine disk space, except when it has been exceeded */
	*bsize = D.bsize;
	if (r == -1) {
		if (errno == EDQUOT) {
			*dfree =0;
			*dsize =D.curblocks;
			return (True);
		} else {
			goto try_group_quota;
		}
	}

	/* Use softlimit to determine disk space, except when it has been exceeded */
	if (
		(D.softlimit && D.curblocks >= D.softlimit) ||
		(D.hardlimit && D.curblocks >= D.hardlimit) ||
		(D.isoftlimit && D.curinodes >= D.isoftlimit) ||
		(D.ihardlimit && D.curinodes>=D.ihardlimit)
	) {
		*dfree = 0;
		*dsize = D.curblocks;
	} else if (D.softlimit==0 && D.hardlimit==0) {
		goto try_group_quota;
	} else {
		if (D.softlimit == 0)
			D.softlimit = D.hardlimit;
		*dfree = D.softlimit - D.curblocks;
		*dsize = D.softlimit;
	}

	return True;
	
try_group_quota:
	id.gid = getegid();

	ZERO_STRUCT(D);
  	r=sys_get_quota(path, SMB_GROUP_QUOTA_TYPE, id, &D);

	/* Use softlimit to determine disk space, except when it has been exceeded */
	*bsize = D.bsize;
	if (r == -1) {
		if (errno == EDQUOT) {
			*dfree =0;
			*dsize =D.curblocks;
			return (True);
		} else {
			return False;
		}
	}

	/* Use softlimit to determine disk space, except when it has been exceeded */
	if (
		(D.softlimit && D.curblocks >= D.softlimit) ||
		(D.hardlimit && D.curblocks >= D.hardlimit) ||
		(D.isoftlimit && D.curinodes >= D.isoftlimit) ||
		(D.ihardlimit && D.curinodes>=D.ihardlimit)
	) {
		*dfree = 0;
		*dsize = D.curblocks;
	} else if (D.softlimit==0 && D.hardlimit==0) {
		return False;
	} else {
		if (D.softlimit == 0)
			D.softlimit = D.hardlimit;
		*dfree = D.softlimit - D.curblocks;
		*dsize = D.softlimit;
	}

	return (True);
}
#endif /* HAVE_SYS_QUOTAS */