aboutsummaryrefslogtreecommitdiffstats
path: root/fs/cifs/inode.c
blob: 957ddd1571c6f0d72e99b053ded08fd14e551b43 (plain) (blame)
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
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
/*
 *   fs/cifs/inode.c
 *
 *   Copyright (C) International Business Machines  Corp., 2002,2005
 *   Author(s): Steve French (sfrench@us.ibm.com)
 *
 *   This library is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Lesser General Public License as published
 *   by the Free Software Foundation; either version 2.1 of the License, or
 *   (at your option) any later version.
 *
 *   This library 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 Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public License
 *   along with this library; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
#include <linux/fs.h>
#include <linux/buffer_head.h>
#include <linux/stat.h>
#include <linux/pagemap.h>
#include <asm/div64.h>
#include "cifsfs.h"
#include "cifspdu.h"
#include "cifsglob.h"
#include "cifsproto.h"
#include "cifs_debug.h"
#include "cifs_fs_sb.h"

int cifs_get_inode_info_unix(struct inode **pinode,
	const unsigned char *search_path, struct super_block *sb, int xid)
{
	int rc = 0;
	FILE_UNIX_BASIC_INFO findData;
	struct cifsTconInfo *pTcon;
	struct inode *inode;
	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
	char *tmp_path;

	pTcon = cifs_sb->tcon;
	cFYI(1, ("Getting info on %s ", search_path));
	/* could have done a find first instead but this returns more info */
	rc = CIFSSMBUnixQPathInfo(xid, pTcon, search_path, &findData,
				  cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
					CIFS_MOUNT_MAP_SPECIAL_CHR);
/*	dump_mem("\nUnixQPathInfo return data", &findData,
		 sizeof(findData)); */
	if (rc) {
		if (rc == -EREMOTE) {
			tmp_path =
			    kmalloc(strnlen(pTcon->treeName,
					    MAX_TREE_SIZE + 1) +
				    strnlen(search_path, MAX_PATHCONF) + 1,
				    GFP_KERNEL);
			if (tmp_path == NULL) {
				return -ENOMEM;
			}
        		/* have to skip first of the double backslash of
			   UNC name */
			strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
			strncat(tmp_path, search_path, MAX_PATHCONF);
			rc = connect_to_dfs_path(xid, pTcon->ses,
						 /* treename + */ tmp_path,
						 cifs_sb->local_nls, 
						 cifs_sb->mnt_cifs_flags & 
						    CIFS_MOUNT_MAP_SPECIAL_CHR);
			kfree(tmp_path);

			/* BB fix up inode etc. */
		} else if (rc) {
			return rc;
		}
	} else {
		struct cifsInodeInfo *cifsInfo;
		__u32 type = le32_to_cpu(findData.Type);
		__u64 num_of_bytes = le64_to_cpu(findData.NumOfBytes);
		__u64 end_of_file = le64_to_cpu(findData.EndOfFile);

		/* get new inode */
		if (*pinode == NULL) {
			*pinode = new_inode(sb);
			if (*pinode == NULL) 
				return -ENOMEM;
			/* Is an i_ino of zero legal? */
			/* Are there sanity checks we can use to ensure that
			   the server is really filling in that field? */
			if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM) {
				(*pinode)->i_ino =
					(unsigned long)findData.UniqueId;
			} /* note ino incremented to unique num in new_inode */
			insert_inode_hash(*pinode);
		}

		inode = *pinode;
		cifsInfo = CIFS_I(inode);

		cFYI(1, ("Old time %ld ", cifsInfo->time));
		cifsInfo->time = jiffies;
		cFYI(1, ("New time %ld ", cifsInfo->time));
		/* this is ok to set on every inode revalidate */
		atomic_set(&cifsInfo->inUse,1);

		inode->i_atime =
		    cifs_NTtimeToUnix(le64_to_cpu(findData.LastAccessTime));
		inode->i_mtime =
		    cifs_NTtimeToUnix(le64_to_cpu
				(findData.LastModificationTime));
		inode->i_ctime =
		    cifs_NTtimeToUnix(le64_to_cpu(findData.LastStatusChange));
		inode->i_mode = le64_to_cpu(findData.Permissions);
		/* since we set the inode type below we need to mask off
                   to avoid strange results if bits set above */
                        inode->i_mode &= ~S_IFMT;
		if (type == UNIX_FILE) {
			inode->i_mode |= S_IFREG;
		} else if (type == UNIX_SYMLINK) {
			inode->i_mode |= S_IFLNK;
		} else if (type == UNIX_DIR) {
			inode->i_mode |= S_IFDIR;
		} else if (type == UNIX_CHARDEV) {
			inode->i_mode |= S_IFCHR;
			inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
				le64_to_cpu(findData.DevMinor) & MINORMASK);
		} else if (type == UNIX_BLOCKDEV) {
			inode->i_mode |= S_IFBLK;
			inode->i_rdev = MKDEV(le64_to_cpu(findData.DevMajor),
				le64_to_cpu(findData.DevMinor) & MINORMASK);
		} else if (type == UNIX_FIFO) {
			inode->i_mode |= S_IFIFO;
		} else if (type == UNIX_SOCKET) {
			inode->i_mode |= S_IFSOCK;
		} else {
			/* safest to call it a file if we do not know */
			inode->i_mode |= S_IFREG;
			cFYI(1,("unknown type %d",type));
		}
		inode->i_uid = le64_to_cpu(findData.Uid);
		inode->i_gid = le64_to_cpu(findData.Gid);
		inode->i_nlink = le64_to_cpu(findData.Nlinks);

		if (is_size_safe_to_change(cifsInfo)) {
		/* can not safely change the file size here if the
		   client is writing to it due to potential races */

			i_size_write(inode, end_of_file);

		/* blksize needs to be multiple of two. So safer to default to
		blksize and blkbits set in superblock so 2**blkbits and blksize
		will match rather than setting to:
		(pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/

		/* This seems incredibly stupid but it turns out that i_blocks
		   is not related to (i_size / i_blksize), instead 512 byte size
		   is required for calculating num blocks */

		/* 512 bytes (2**9) is the fake blocksize that must be used */
		/* for this calculation */
			inode->i_blocks = (512 - 1 + num_of_bytes) >> 9;
		}

		if (num_of_bytes < end_of_file)
			cFYI(1, ("allocation size less than end of file"));
		cFYI(1, ("Size %ld and blocks %llu",
			(unsigned long) inode->i_size,
			(unsigned long long)inode->i_blocks));
		if (S_ISREG(inode->i_mode)) {
			cFYI(1, ("File inode"));
			inode->i_op = &cifs_file_inode_ops;
			if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
				if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
					inode->i_fop = 
						&cifs_file_direct_nobrl_ops;
				else
					inode->i_fop = &cifs_file_direct_ops;
			} else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
				inode->i_fop = &cifs_file_nobrl_ops;
			else /* not direct, send byte range locks */ 
				inode->i_fop = &cifs_file_ops;

			inode->i_data.a_ops = &cifs_addr_ops;
			/* check if server can support readpages */
			if(pTcon->ses->server->maxBuf < 
			    4096 + MAX_CIFS_HDR_SIZE)
				inode->i_data.a_ops->readpages = NULL;
		} else if (S_ISDIR(inode->i_mode)) {
			cFYI(1, ("Directory inode"));
			inode->i_op = &cifs_dir_inode_ops;
			inode->i_fop = &cifs_dir_ops;
		} else if (S_ISLNK(inode->i_mode)) {
			cFYI(1, ("Symbolic Link inode"));
			inode->i_op = &cifs_symlink_inode_ops;
		/* tmp_inode->i_fop = */ /* do not need to set to anything */
		} else {
			cFYI(1, ("Init special inode"));
			init_special_inode(inode, inode->i_mode,
					   inode->i_rdev);
		}
	}
	return rc;
}

static int decode_sfu_inode(struct inode * inode, __u64 size,
			    const unsigned char *path,
			    struct cifs_sb_info *cifs_sb, int xid)
{
	int rc;
	int oplock = FALSE;
	__u16 netfid;
	struct cifsTconInfo *pTcon = cifs_sb->tcon;
	char buf[24];
	unsigned int bytes_read;
	char * pbuf;

	pbuf = buf;

	if(size == 0) {
		inode->i_mode |= S_IFIFO;
		return 0;
	} else if (size < 8) {
		return -EINVAL;	 /* EOPNOTSUPP? */
	}
		
	rc = CIFSSMBOpen(xid, pTcon, path, FILE_OPEN, GENERIC_READ,
			 CREATE_NOT_DIR, &netfid, &oplock, NULL,
			 cifs_sb->local_nls,
			 cifs_sb->mnt_cifs_flags &
				CIFS_MOUNT_MAP_SPECIAL_CHR);
	if (rc==0) {
		int buf_type = CIFS_NO_BUFFER;
			/* Read header */
		rc = CIFSSMBRead(xid, pTcon,
			         netfid,
				 24 /* length */, 0 /* offset */,
				 &bytes_read, &pbuf, &buf_type);
		if((rc == 0) && (bytes_read >= 8)) {
			if(memcmp("IntxBLK", pbuf, 8) == 0) {
				cFYI(1,("Block device"));
				inode->i_mode |= S_IFBLK;
				if(bytes_read == 24) {
					/* we have enough to decode dev num */
					__u64 mjr; /* major */
					__u64 mnr; /* minor */
					mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
					mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
					inode->i_rdev = MKDEV(mjr, mnr);
				}
			} else if(memcmp("IntxCHR", pbuf, 8) == 0) {
				cFYI(1,("Char device"));
				inode->i_mode |= S_IFCHR;
				if(bytes_read == 24) {
					/* we have enough to decode dev num */
					__u64 mjr; /* major */
					__u64 mnr; /* minor */
					mjr = le64_to_cpu(*(__le64 *)(pbuf+8));
					mnr = le64_to_cpu(*(__le64 *)(pbuf+16));
					inode->i_rdev = MKDEV(mjr, mnr);
                                }
			} else if(memcmp("IntxLNK", pbuf, 7) == 0) {
				cFYI(1,("Symlink"));
				inode->i_mode |= S_IFLNK;
			} else {
				inode->i_mode |= S_IFREG; /* file? */
				rc = -EOPNOTSUPP; 
			}
		} else {
			inode->i_mode |= S_IFREG; /* then it is a file */
			rc = -EOPNOTSUPP; /* or some unknown SFU type */	
		}		
		CIFSSMBClose(xid, pTcon, netfid);
	}
	return rc;
	
}

#define SFBITS_MASK (S_ISVTX | S_ISGID | S_ISUID)  /* SETFILEBITS valid bits */

static int get_sfu_uid_mode(struct inode * inode,
			const unsigned char *path,
			struct cifs_sb_info *cifs_sb, int xid)
{
#ifdef CONFIG_CIFS_XATTR
	ssize_t rc;
	char ea_value[4];
	__u32 mode;

	rc = CIFSSMBQueryEA(xid, cifs_sb->tcon, path, "SETFILEBITS",
			ea_value, 4 /* size of buf */, cifs_sb->local_nls,
                        cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
	if(rc < 0)
		return (int)rc;
	else if (rc > 3) {
		mode = le32_to_cpu(*((__le32 *)ea_value));
		inode->i_mode &= ~SFBITS_MASK; 
		cFYI(1,("special bits 0%o org mode 0%o", mode, inode->i_mode));
		inode->i_mode = (mode &  SFBITS_MASK) | inode->i_mode;
		cFYI(1,("special mode bits 0%o", mode));
		return 0;
	} else {
		return 0;
	}
#else
	return -EOPNOTSUPP;
#endif

		
}

int cifs_get_inode_info(struct inode **pinode,
	const unsigned char *search_path, FILE_ALL_INFO *pfindData,
	struct super_block *sb, int xid)
{
	int rc = 0;
	struct cifsTconInfo *pTcon;
	struct inode *inode;
	struct cifs_sb_info *cifs_sb = CIFS_SB(sb);
	char *tmp_path;
	char *buf = NULL;

	pTcon = cifs_sb->tcon;
	cFYI(1,("Getting info on %s", search_path));

	if ((pfindData == NULL) && (*pinode != NULL)) {
		if (CIFS_I(*pinode)->clientCanCacheRead) {
			cFYI(1,("No need to revalidate cached inode sizes"));
			return rc;
		}
	}

	/* if file info not passed in then get it from server */
	if (pfindData == NULL) {
		buf = kmalloc(sizeof(FILE_ALL_INFO), GFP_KERNEL);
		if (buf == NULL)
			return -ENOMEM;
		pfindData = (FILE_ALL_INFO *)buf;
		/* could do find first instead but this returns more info */
		rc = CIFSSMBQPathInfo(xid, pTcon, search_path, pfindData,
			      cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
				CIFS_MOUNT_MAP_SPECIAL_CHR);
		/* BB optimize code so we do not make the above call
		when server claims no NT SMB support and the above call
		failed at least once - set flag in tcon or mount */
		if((rc == -EOPNOTSUPP) || (rc == -EINVAL)) {
			rc = SMBQueryInformation(xid, pTcon, search_path,
					pfindData, cifs_sb->local_nls, 
					cifs_sb->mnt_cifs_flags &
					  CIFS_MOUNT_MAP_SPECIAL_CHR);
		}
		
	}
	/* dump_mem("\nQPathInfo return data",&findData, sizeof(findData)); */
	if (rc) {
		if (rc == -EREMOTE) {
			tmp_path =
			    kmalloc(strnlen
				    (pTcon->treeName,
				     MAX_TREE_SIZE + 1) +
				    strnlen(search_path, MAX_PATHCONF) + 1,
				    GFP_KERNEL);
			if (tmp_path == NULL) {
				kfree(buf);
				return -ENOMEM;
			}

			strncpy(tmp_path, pTcon->treeName, MAX_TREE_SIZE);
			strncat(tmp_path, search_path, MAX_PATHCONF);
			rc = connect_to_dfs_path(xid, pTcon->ses,
						 /* treename + */ tmp_path,
						 cifs_sb->local_nls, 
						 cifs_sb->mnt_cifs_flags & 
						   CIFS_MOUNT_MAP_SPECIAL_CHR);
			kfree(tmp_path);
			/* BB fix up inode etc. */
		} else if (rc) {
			kfree(buf);
			return rc;
		}
	} else {
		struct cifsInodeInfo *cifsInfo;
		__u32 attr = le32_to_cpu(pfindData->Attributes);

		/* get new inode */
		if (*pinode == NULL) {
			*pinode = new_inode(sb);
			if (*pinode == NULL)
				return -ENOMEM;
			/* Is an i_ino of zero legal? Can we use that to check
			   if the server supports returning inode numbers?  Are
			   there other sanity checks we can use to ensure that
			   the server is really filling in that field? */

			/* We can not use the IndexNumber field by default from
			   Windows or Samba (in ALL_INFO buf) but we can request
			   it explicitly.  It may not be unique presumably if
			   the server has multiple devices mounted under one
			   share */

			/* There may be higher info levels that work but are
			   there Windows server or network appliances for which
			   IndexNumber field is not guaranteed unique? */

			if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SERVER_INUM){
				int rc1 = 0;
				__u64 inode_num;

				rc1 = CIFSGetSrvInodeNumber(xid, pTcon, 
					search_path, &inode_num, 
					cifs_sb->local_nls,
					cifs_sb->mnt_cifs_flags &
						CIFS_MOUNT_MAP_SPECIAL_CHR);
				if (rc1) {
					cFYI(1,("GetSrvInodeNum rc %d", rc1));
					/* BB EOPNOSUPP disable SERVER_INUM? */
				} else /* do we need cast or hash to ino? */
					(*pinode)->i_ino = inode_num;
			} /* else ino incremented to unique num in new_inode*/
			insert_inode_hash(*pinode);
		}
		inode = *pinode;
		cifsInfo = CIFS_I(inode);
		cifsInfo->cifsAttrs = attr;
		cFYI(1, ("Old time %ld ", cifsInfo->time));
		cifsInfo->time = jiffies;
		cFYI(1, ("New time %ld ", cifsInfo->time));

		/* blksize needs to be multiple of two. So safer to default to
		blksize and blkbits set in superblock so 2**blkbits and blksize
		will match rather than setting to:
		(pTcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE) & 0xFFFFFE00;*/

		/* Linux can not store file creation time unfortunately so we ignore it */
		inode->i_atime =
		    cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastAccessTime));
		inode->i_mtime =
		    cifs_NTtimeToUnix(le64_to_cpu(pfindData->LastWriteTime));
		inode->i_ctime =
		    cifs_NTtimeToUnix(le64_to_cpu(pfindData->ChangeTime));
		cFYI(0, ("Attributes came in as 0x%x ", attr));

		/* set default mode. will override for dirs below */
		if (atomic_read(&cifsInfo->inUse) == 0)
			/* new inode, can safely set these fields */
			inode->i_mode = cifs_sb->mnt_file_mode;
		else /* since we set the inode type below we need to mask off
		     to avoid strange results if type changes and both get orred in */ 
			inode->i_mode &= ~S_IFMT; 
/*		if (attr & ATTR_REPARSE)  */
		/* We no longer handle these as symlinks because we could not
		   follow them due to the absolute path with drive letter */
		if (attr & ATTR_DIRECTORY) {
		/* override default perms since we do not do byte range locking
		   on dirs */
			inode->i_mode = cifs_sb->mnt_dir_mode;
			inode->i_mode |= S_IFDIR;
		} else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
			   (cifsInfo->cifsAttrs & ATTR_SYSTEM) &&
			   /* No need to le64 convert size of zero */
			   (pfindData->EndOfFile == 0)) {
			inode->i_mode = cifs_sb->mnt_file_mode;
			inode->i_mode |= S_IFIFO;
/* BB Finish for SFU style symlinks and devices */
		} else if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) &&
			   (cifsInfo->cifsAttrs & ATTR_SYSTEM)) {
			if (decode_sfu_inode(inode, 
					 le64_to_cpu(pfindData->EndOfFile),
					 search_path,
					 cifs_sb, xid)) {
				cFYI(1,("Unrecognized sfu inode type"));
			}
			cFYI(1,("sfu mode 0%o",inode->i_mode));
		} else {
			inode->i_mode |= S_IFREG;
			/* treat the dos attribute of read-only as read-only
			   mode e.g. 555 */
			if (cifsInfo->cifsAttrs & ATTR_READONLY)
				inode->i_mode &= ~(S_IWUGO);
		/* BB add code here -
		   validate if device or weird share or device type? */
		}
		if (is_size_safe_to_change(cifsInfo)) {
			/* can not safely change the file size here if the
			   client is writing to it due to potential races */
			i_size_write(inode,le64_to_cpu(pfindData->EndOfFile));

			/* 512 bytes (2**9) is the fake blocksize that must be
			   used for this calculation */
			inode->i_blocks = (512 - 1 + le64_to_cpu(
					   pfindData->AllocationSize)) >> 9;
		}

		inode->i_nlink = le32_to_cpu(pfindData->NumberOfLinks);

		/* BB fill in uid and gid here? with help from winbind? 
		   or retrieve from NTFS stream extended attribute */
		if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_UNX_EMUL) {
			/* fill in uid, gid, mode from server ACL */
			get_sfu_uid_mode(inode, search_path, cifs_sb, xid);
		} else if (atomic_read(&cifsInfo->inUse) == 0) {
			inode->i_uid = cifs_sb->mnt_uid;
			inode->i_gid = cifs_sb->mnt_gid;
			/* set so we do not keep refreshing these fields with
			   bad data after user has changed them in memory */
			atomic_set(&cifsInfo->inUse,1);
		}

		if (S_ISREG(inode->i_mode)) {
			cFYI(1, ("File inode"));
			inode->i_op = &cifs_file_inode_ops;
			if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) {
				if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
					inode->i_fop =
						&cifs_file_direct_nobrl_ops;
				else
					inode->i_fop = &cifs_file_direct_ops;
			} else if(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL)
				inode->i_fop = &cifs_file_nobrl_ops;
			else /* not direct, send byte range locks */
				inode->i_fop = &cifs_file_ops;

			inode->i_data.a_ops = &cifs_addr_ops;
			if(pTcon->ses->server->maxBuf < 
			     4096 + MAX_CIFS_HDR_SIZE)
				inode->i_data.a_ops->readpages = NULL;
		} else if (S_ISDIR(inode->i_mode)) {
			cFYI(1, ("Directory inode"));
			inode->i_op = &cifs_dir_inode_ops;
			inode->i_fop = &cifs_dir_ops;
		} else if (S_ISLNK(inode->i_mode)) {
			cFYI(1, ("Symbolic Link inode"));
			inode->i_op = &cifs_symlink_inode_ops;
		} else {
			init_special_inode(inode, inode->i_mode,
					   inode->i_rdev);
		}
	}
	kfree(buf);
	return rc;
}

/* gets root inode */
void cifs_read_inode(struct inode *inode)
{
	int xid;
	struct cifs_sb_info *cifs_sb;

	cifs_sb = CIFS_SB(inode->i_sb);
	xid = GetXid();
	if (cifs_sb->tcon->ses->capabilities & CAP_UNIX)
		cifs_get_inode_info_unix(&inode, "", inode->i_sb,xid);
	else
		cifs_get_inode_info(&inode, "", NULL, inode->i_sb,xid);
	/* can not call macro FreeXid here since in a void func */
	_FreeXid(xid);
}

int cifs_unlink(struct inode *inode, struct dentry *direntry)
{
	int rc = 0;
	int xid;
	struct cifs_sb_info *cifs_sb;
	struct cifsTconInfo *pTcon;
	char *full_path = NULL;
	struct cifsInodeInfo *cifsInode;
	FILE_BASIC_INFO *pinfo_buf;

	cFYI(1, ("cifs_unlink, inode = 0x%p", inode));

	xid = GetXid();

	if(inode)
		cifs_sb = CIFS_SB(inode->i_sb);
	else
		cifs_sb = CIFS_SB(direntry->d_sb);
	pTcon = cifs_sb->tcon;

	/* Unlink can be called from rename so we can not grab the sem here
	   since we deadlock otherwise */
/*	mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);*/
	full_path = build_path_from_dentry(direntry);
/*	mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);*/
	if (full_path == NULL) {
		FreeXid(xid);
		return -ENOMEM;
	}
	rc = CIFSSMBDelFile(xid, pTcon, full_path, cifs_sb->local_nls,
			cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);

	if (!rc) {
		if (direntry->d_inode)
			direntry->d_inode->i_nlink--;
	} else if (rc == -ENOENT) {
		d_drop(direntry);
	} else if (rc == -ETXTBSY) {
		int oplock = FALSE;
		__u16 netfid;

		rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN, DELETE,
				 CREATE_NOT_DIR | CREATE_DELETE_ON_CLOSE,
				 &netfid, &oplock, NULL, cifs_sb->local_nls,
				 cifs_sb->mnt_cifs_flags & 
					CIFS_MOUNT_MAP_SPECIAL_CHR);
		if (rc==0) {
			CIFSSMBRenameOpenFile(xid, pTcon, netfid, NULL,
					      cifs_sb->local_nls, 
					      cifs_sb->mnt_cifs_flags & 
						CIFS_MOUNT_MAP_SPECIAL_CHR);
			CIFSSMBClose(xid, pTcon, netfid);
			if (direntry->d_inode)
				direntry->d_inode->i_nlink--;
		}
	} else if (rc == -EACCES) {
		/* try only if r/o attribute set in local lookup data? */
		pinfo_buf = kzalloc(sizeof(FILE_BASIC_INFO), GFP_KERNEL);
		if (pinfo_buf) {
			/* ATTRS set to normal clears r/o bit */
			pinfo_buf->Attributes = cpu_to_le32(ATTR_NORMAL);
			if (!(pTcon->ses->flags & CIFS_SES_NT4))
				rc = CIFSSMBSetTimes(xid, pTcon, full_path,
						     pinfo_buf,
						     cifs_sb->local_nls,
						     cifs_sb->mnt_cifs_flags & 
							CIFS_MOUNT_MAP_SPECIAL_CHR);
			else
				rc = -EOPNOTSUPP;

			if (rc == -EOPNOTSUPP) {
				int oplock = FALSE;
				__u16 netfid;
			/*	rc = CIFSSMBSetAttrLegacy(xid, pTcon,
							  full_path,
							  (__u16)ATTR_NORMAL,
							  cifs_sb->local_nls); 
			   For some strange reason it seems that NT4 eats the
			   old setattr call without actually setting the
			   attributes so on to the third attempted workaround
			   */

			/* BB could scan to see if we already have it open
			   and pass in pid of opener to function */
				rc = CIFSSMBOpen(xid, pTcon, full_path,
						 FILE_OPEN, SYNCHRONIZE |
						 FILE_WRITE_ATTRIBUTES, 0,
						 &netfid, &oplock, NULL,
						 cifs_sb->local_nls,
						 cifs_sb->mnt_cifs_flags & 
						    CIFS_MOUNT_MAP_SPECIAL_CHR);
				if (rc==0) {
					rc = CIFSSMBSetFileTimes(xid, pTcon,
								 pinfo_buf,
								 netfid);
					CIFSSMBClose(xid, pTcon, netfid);
				}
			}
			kfree(pinfo_buf);
		}
		if (rc==0) {
			rc = CIFSSMBDelFile(xid, pTcon, full_path, 
					    cifs_sb->local_nls, 
					    cifs_sb->mnt_cifs_flags & 
						CIFS_MOUNT_MAP_SPECIAL_CHR);
			if (!rc) {
				if (direntry->d_inode)
					direntry->d_inode->i_nlink--;
			} else if (rc == -ETXTBSY) {
				int oplock = FALSE;
				__u16 netfid;

				rc = CIFSSMBOpen(xid, pTcon, full_path,
						 FILE_OPEN, DELETE,
						 CREATE_NOT_DIR |
						 CREATE_DELETE_ON_CLOSE,
						 &netfid, &oplock, NULL,
						 cifs_sb->local_nls, 
						 cifs_sb->mnt_cifs_flags & 
						    CIFS_MOUNT_MAP_SPECIAL_CHR);
				if (rc==0) {
					CIFSSMBRenameOpenFile(xid, pTcon,
						netfid, NULL,
						cifs_sb->local_nls,
						cifs_sb->mnt_cifs_flags &
						    CIFS_MOUNT_MAP_SPECIAL_CHR);
					CIFSSMBClose(xid, pTcon, netfid);
					if (direntry->d_inode)
			                        direntry->d_inode->i_nlink--;
				}
			/* BB if rc = -ETXTBUSY goto the rename logic BB */
			}
		}
	}
	if (direntry->d_inode) {
		cifsInode = CIFS_I(direntry->d_inode);
		cifsInode->time = 0;	/* will force revalidate to get info
					   when needed */
		direntry->d_inode->i_ctime = current_fs_time(inode->i_sb);
	}
	if(inode) {
		inode->i_ctime = inode->i_mtime = current_fs_time(inode->i_sb);
		cifsInode = CIFS_I(inode);
		cifsInode->time = 0;	/* force revalidate of dir as well */
	}

	kfree(full_path);
	FreeXid(xid);
	return rc;
}

int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
{
	int rc = 0;
	int xid;
	struct cifs_sb_info *cifs_sb;
	struct cifsTconInfo *pTcon;
	char *full_path = NULL;
	struct inode *newinode = NULL;

	cFYI(1, ("In cifs_mkdir, mode = 0x%x inode = 0x%p", mode, inode));

	xid = GetXid();

	cifs_sb = CIFS_SB(inode->i_sb);
	pTcon = cifs_sb->tcon;

	mutex_lock(&inode->i_sb->s_vfs_rename_mutex);
	full_path = build_path_from_dentry(direntry);
	mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);
	if (full_path == NULL) {
		FreeXid(xid);
		return -ENOMEM;
	}
	/* BB add setting the equivalent of mode via CreateX w/ACLs */
	rc = CIFSSMBMkDir(xid, pTcon, full_path, cifs_sb->local_nls,
			  cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
	if (rc) {
		cFYI(1, ("cifs_mkdir returned 0x%x ", rc));
		d_drop(direntry);
	} else {
		inode->i_nlink++;
		if (pTcon->ses->capabilities & CAP_UNIX)
			rc = cifs_get_inode_info_unix(&newinode, full_path,
						      inode->i_sb,xid);
		else
			rc = cifs_get_inode_info(&newinode, full_path, NULL,
						 inode->i_sb,xid);

		if (pTcon->nocase)
			direntry->d_op = &cifs_ci_dentry_ops;
		else
			direntry->d_op = &cifs_dentry_ops;
		d_instantiate(direntry, newinode);
		if (direntry->d_inode)
			direntry->d_inode->i_nlink = 2;
		if (cifs_sb->tcon->ses->capabilities & CAP_UNIX)
			if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_SET_UID) {
				CIFSSMBUnixSetPerms(xid, pTcon, full_path,
						    mode,
						    (__u64)current->fsuid,
						    (__u64)current->fsgid,
						    0 /* dev_t */,
						    cifs_sb->local_nls,
						    cifs_sb->mnt_cifs_flags &
						    CIFS_MOUNT_MAP_SPECIAL_CHR);
			} else {
				CIFSSMBUnixSetPerms(xid, pTcon, full_path,
						    mode, (__u64)-1,
						    (__u64)-1, 0 /* dev_t */,
						    cifs_sb->local_nls,
						    cifs_sb->mnt_cifs_flags & 
						    CIFS_MOUNT_MAP_SPECIAL_CHR);
			}
		else {
			/* BB to be implemented via Windows secrty descriptors
			   eg CIFSSMBWinSetPerms(xid, pTcon, full_path, mode,
						 -1, -1, local_nls); */
			if(direntry->d_inode) {
				direntry->d_inode->i_mode = mode;
				direntry->d_inode->i_mode |= S_IFDIR;
				if(cifs_sb->mnt_cifs_flags & 
				     CIFS_MOUNT_SET_UID) {
					direntry->d_inode->i_uid = 
						current->fsuid;
					direntry->d_inode->i_gid = 
						current->fsgid;
				}
			}
		}
	}
	kfree(full_path);
	FreeXid(xid);
	return rc;
}

int cifs_rmdir(struct inode *inode, struct dentry *direntry)
{
	int rc = 0;
	int xid;
	struct cifs_sb_info *cifs_sb;
	struct cifsTconInfo *pTcon;
	char *full_path = NULL;
	struct cifsInodeInfo *cifsInode;

	cFYI(1, ("cifs_rmdir, inode = 0x%p with ", inode));

	xid = GetXid();

	cifs_sb = CIFS_SB(inode->i_sb);
	pTcon = cifs_sb->tcon;

	mutex_lock(&inode->i_sb->s_vfs_rename_mutex);
	full_path = build_path_from_dentry(direntry);
	mutex_unlock(&inode->i_sb->s_vfs_rename_mutex);
	if (full_path == NULL) {
		FreeXid(xid);
		return -ENOMEM;
	}

	rc = CIFSSMBRmDir(xid, pTcon, full_path, cifs_sb->local_nls,
			  cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);

	if (!rc) {
		inode->i_nlink--;
		i_size_write(direntry->d_inode,0);
		direntry->d_inode->i_nlink = 0;
	}

	cifsInode = CIFS_I(direntry->d_inode);
	cifsInode->time = 0;	/* force revalidate to go get info when
				   needed */
	direntry->d_inode->i_ctime = inode->i_ctime = inode->i_mtime =
		current_fs_time(inode->i_sb);

	kfree(full_path);
	FreeXid(xid);
	return rc;
}

int cifs_rename(struct inode *source_inode, struct dentry *source_direntry,
	struct inode *target_inode, struct dentry *target_direntry)
{
	char *fromName;
	char *toName;
	struct cifs_sb_info *cifs_sb_source;
	struct cifs_sb_info *cifs_sb_target;
	struct cifsTconInfo *pTcon;
	int xid;
	int rc = 0;

	xid = GetXid();

	cifs_sb_target = CIFS_SB(target_inode->i_sb);
	cifs_sb_source = CIFS_SB(source_inode->i_sb);
	pTcon = cifs_sb_source->tcon;

	if (pTcon != cifs_sb_target->tcon) {
		FreeXid(xid);
		return -EXDEV;	/* BB actually could be allowed if same server,
				   but different share.
				   Might eventually add support for this */
	}

	/* we already  have the rename sem so we do not need to grab it again
	   here to protect the path integrity */
	fromName = build_path_from_dentry(source_direntry);
	toName = build_path_from_dentry(target_direntry);
	if ((fromName == NULL) || (toName == NULL)) {
		rc = -ENOMEM;
		goto cifs_rename_exit;
	}

	rc = CIFSSMBRename(xid, pTcon, fromName, toName,
			   cifs_sb_source->local_nls,
			   cifs_sb_source->mnt_cifs_flags &
				CIFS_MOUNT_MAP_SPECIAL_CHR);
	if (rc == -EEXIST) {
		/* check if they are the same file because rename of hardlinked
		   files is a noop */
		FILE_UNIX_BASIC_INFO *info_buf_source;
		FILE_UNIX_BASIC_INFO *info_buf_target;

		info_buf_source =
			kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO), GFP_KERNEL);
		if (info_buf_source != NULL) {
			info_buf_target = info_buf_source + 1;
			rc = CIFSSMBUnixQPathInfo(xid, pTcon, fromName,
				info_buf_source, cifs_sb_source->local_nls, 
				cifs_sb_source->mnt_cifs_flags &
					CIFS_MOUNT_MAP_SPECIAL_CHR);
			if (rc == 0) {
				rc = CIFSSMBUnixQPathInfo(xid, pTcon, toName,
						info_buf_target,
						cifs_sb_target->local_nls,
						/* remap based on source sb */
						cifs_sb_source->mnt_cifs_flags &
						    CIFS_MOUNT_MAP_SPECIAL_CHR);
			}
			if ((rc == 0) &&
			    (info_buf_source->UniqueId ==
			     info_buf_target->UniqueId)) {
			/* do not rename since the files are hardlinked which
			   is a noop */
			} else {
			/* we either can not tell the files are hardlinked
			   (as with Windows servers) or files are not
			   hardlinked so delete the target manually before
			   renaming to follow POSIX rather than Windows
			   semantics */
				cifs_unlink(target_inode, target_direntry);
				rc = CIFSSMBRename(xid, pTcon, fromName,
						   toName,
						   cifs_sb_source->local_nls,
						   cifs_sb_source->mnt_cifs_flags
						   & CIFS_MOUNT_MAP_SPECIAL_CHR);
			}
			kfree(info_buf_source);
		} /* if we can not get memory just leave rc as EEXIST */
	}

	if (rc) {
		cFYI(1, ("rename rc %d", rc));
	}

	if ((rc == -EIO) || (rc == -EEXIST)) {
		int oplock = FALSE;
		__u16 netfid;

		/* BB FIXME Is Generic Read correct for rename? */
		/* if renaming directory - we should not say CREATE_NOT_DIR,
		   need to test renaming open directory, also GENERIC_READ
		   might not right be right access to request */
		rc = CIFSSMBOpen(xid, pTcon, fromName, FILE_OPEN, GENERIC_READ,
				 CREATE_NOT_DIR, &netfid, &oplock, NULL,
				 cifs_sb_source->local_nls, 
				 cifs_sb_source->mnt_cifs_flags & 
					CIFS_MOUNT_MAP_SPECIAL_CHR);
		if (rc==0) {
			CIFSSMBRenameOpenFile(xid, pTcon, netfid, toName,
					      cifs_sb_source->local_nls, 
					      cifs_sb_source->mnt_cifs_flags &
						CIFS_MOUNT_MAP_SPECIAL_CHR);
			CIFSSMBClose(xid, pTcon, netfid);
		}
	}

cifs_rename_exit:
	kfree(fromName);
	kfree(toName);
	FreeXid(xid);
	return rc;
}

int cifs_revalidate(struct dentry *direntry)
{
	int xid;
	int rc = 0;
	char *full_path;
	struct cifs_sb_info *cifs_sb;
	struct cifsInodeInfo *cifsInode;
	loff_t local_size;
	struct timespec local_mtime;
	int invalidate_inode = FALSE;

	if (direntry->d_inode == NULL)
		return -ENOENT;

	cifsInode = CIFS_I(direntry->d_inode);

	if (cifsInode == NULL)
		return -ENOENT;

	/* no sense revalidating inode info on file that no one can write */
	if (CIFS_I(direntry->d_inode)->clientCanCacheRead)
		return rc;

	xid = GetXid();

	cifs_sb = CIFS_SB(direntry->d_sb);

	/* can not safely grab the rename sem here if rename calls revalidate
	   since that would deadlock */
	full_path = build_path_from_dentry(direntry);
	if (full_path == NULL) {
		FreeXid(xid);
		return -ENOMEM;
	}
	cFYI(1, ("Revalidate: %s inode 0x%p count %d dentry: 0x%p d_time %ld "
		 "jiffies %ld", full_path, direntry->d_inode,
		 direntry->d_inode->i_count.counter, direntry,
		 direntry->d_time, jiffies));

	if (cifsInode->time == 0) {
		/* was set to zero previously to force revalidate */
	} else if (time_before(jiffies, cifsInode->time + HZ) &&
		   lookupCacheEnabled) {
		if ((S_ISREG(direntry->d_inode->i_mode) == 0) ||
		    (direntry->d_inode->i_nlink == 1)) {
			kfree(full_path);
			FreeXid(xid);
			return rc;
		} else {
			cFYI(1, ("Have to revalidate file due to hardlinks"));
		}
	}

	/* save mtime and size */
	local_mtime = direntry->d_inode->i_mtime;
	local_size = direntry->d_inode->i_size;

	if (cifs_sb->tcon->ses->capabilities & CAP_UNIX) {
		rc = cifs_get_inode_info_unix(&direntry->d_inode, full_path,
					      direntry->d_sb,xid);
		if (rc) {
			cFYI(1, ("error on getting revalidate info %d", rc));
/*			if (rc != -ENOENT)
				rc = 0; */	/* BB should we cache info on
						   certain errors? */
		}
	} else {
		rc = cifs_get_inode_info(&direntry->d_inode, full_path, NULL,
					 direntry->d_sb,xid);
		if (rc) {
			cFYI(1, ("error on getting revalidate info %d", rc));
/*			if (rc != -ENOENT)
				rc = 0; */	/* BB should we cache info on
						   certain errors? */
		}
	}
	/* should we remap certain errors, access denied?, to zero */

	/* if not oplocked, we invalidate inode pages if mtime or file size
	   had changed on server */

	if (timespec_equal(&local_mtime,&direntry->d_inode->i_mtime) && 
	    (local_size == direntry->d_inode->i_size)) {
		cFYI(1, ("cifs_revalidate - inode unchanged"));
	} else {
		/* file may have changed on server */
		if (cifsInode->clientCanCacheRead) {
			/* no need to invalidate inode pages since we were the
			   only ones who could have modified the file and the
			   server copy is staler than ours */
		} else {
			invalidate_inode = TRUE;
		}
	}

	/* can not grab this sem since kernel filesys locking documentation
	   indicates i_mutex may be taken by the kernel on lookup and rename
	   which could deadlock if we grab the i_mutex here as well */
/*	mutex_lock(&direntry->d_inode->i_mutex);*/
	/* need to write out dirty pages here  */
	if (direntry->d_inode->i_mapping) {
		/* do we need to lock inode until after invalidate completes
		   below? */
		filemap_fdatawrite(direntry->d_inode->i_mapping);
	}
	if (invalidate_inode) {
	/* shrink_dcache not necessary now that cifs dentry ops
	are exported for negative dentries */
/*		if(S_ISDIR(direntry->d_inode->i_mode)) 
			shrink_dcache_parent(direntry); */
		if (S_ISREG(direntry->d_inode->i_mode)) {
			if (direntry->d_inode->i_mapping)
				filemap_fdatawait(direntry->d_inode->i_mapping);
			/* may eventually have to do this for open files too */
			if (list_empty(&(cifsInode->openFileList))) {
				/* changed on server - flush read ahead pages */
				cFYI(1, ("Invalidating read ahead data on "
					 "closed file"));
				invalidate_remote_inode(direntry->d_inode);
			}
		}
	}
/*	mutex_unlock(&direntry->d_inode->i_mutex); */
	
	kfree(full_path);
	FreeXid(xid);
	return rc;
}

int cifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
	struct kstat *stat)
{
	int err = cifs_revalidate(dentry);
	if (!err)
		generic_fillattr(dentry->d_inode, stat);
	return err;
}

static int cifs_truncate_page(struct address_space *mapping, loff_t from)
{
	pgoff_t index = from >> PAGE_CACHE_SHIFT;
	unsigned offset = from & (PAGE_CACHE_SIZE - 1);
	struct page *page;
	char *kaddr;
	int rc = 0;

	page = grab_cache_page(mapping, index);
	if (!page)
		return -ENOMEM;

	kaddr = kmap_atomic(page, KM_USER0);
	memset(kaddr + offset, 0, PAGE_CACHE_SIZE - offset);
	flush_dcache_page(page);
	kunmap_atomic(kaddr, KM_USER0);
	unlock_page(page);
	page_cache_release(page);
	return rc;
}

int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
{
	int xid;
	struct cifs_sb_info *cifs_sb;
	struct cifsTconInfo *pTcon;
	char *full_path = NULL;
	int rc = -EACCES;
	struct cifsFileInfo *open_file = NULL;
	FILE_BASIC_INFO time_buf;
	int set_time = FALSE;
	__u64 mode = 0xFFFFFFFFFFFFFFFFULL;
	__u64 uid = 0xFFFFFFFFFFFFFFFFULL;
	__u64 gid = 0xFFFFFFFFFFFFFFFFULL;
	struct cifsInodeInfo *cifsInode;

	xid = GetXid();

	cFYI(1, ("In cifs_setattr, name = %s attrs->iavalid 0x%x ",
		 direntry->d_name.name, attrs->ia_valid));

	cifs_sb = CIFS_SB(direntry->d_inode->i_sb);
	pTcon = cifs_sb->tcon;

	if ((cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_PERM) == 0) {
		/* check if we have permission to change attrs */
		rc = inode_change_ok(direntry->d_inode, attrs);
		if(rc < 0) {
			FreeXid(xid);
			return rc;
		} else
			rc = 0;
	}
		
	mutex_lock(&direntry->d_sb->s_vfs_rename_mutex);
	full_path = build_path_from_dentry(direntry);
	mutex_unlock(&direntry->d_sb->s_vfs_rename_mutex);
	if (full_path == NULL) {
		FreeXid(xid);
		return -ENOMEM;
	}
	cifsInode = CIFS_I(direntry->d_inode);

	/* BB check if we need to refresh inode from server now ? BB */

	/* need to flush data before changing file size on server */
	filemap_write_and_wait(direntry->d_inode->i_mapping);

	if (attrs->ia_valid & ATTR_SIZE) {
		/* To avoid spurious oplock breaks from server, in the case of
		   inodes that we already have open, avoid doing path based
		   setting of file size if we can do it by handle.
		   This keeps our caching token (oplock) and avoids timeouts
		   when the local oplock break takes longer to flush
		   writebehind data than the SMB timeout for the SetPathInfo
		   request would allow */
		open_file = find_writable_file(cifsInode);
		if (open_file) {
			__u16 nfid = open_file->netfid;
			__u32 npid = open_file->pid;
			rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size,
						nfid, npid, FALSE);
			atomic_dec(&open_file->wrtPending);
			cFYI(1,("SetFSize for attrs rc = %d", rc));
			if((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
				int bytes_written;
				rc = CIFSSMBWrite(xid, pTcon,
						  nfid, 0, attrs->ia_size,
						  &bytes_written, NULL, NULL,
						  1 /* 45 seconds */);
				cFYI(1,("Wrt seteof rc %d", rc));
			}
		} else 
			rc = -EINVAL;

		if (rc != 0) {
			/* Set file size by pathname rather than by handle
			   either because no valid, writeable file handle for
			   it was found or because there was an error setting
			   it by handle */
			rc = CIFSSMBSetEOF(xid, pTcon, full_path,
					   attrs->ia_size, FALSE,
					   cifs_sb->local_nls, 
					   cifs_sb->mnt_cifs_flags &
						CIFS_MOUNT_MAP_SPECIAL_CHR);
			cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc));
			if((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
				__u16 netfid;
				int oplock = FALSE;

				rc = SMBLegacyOpen(xid, pTcon, full_path,
					FILE_OPEN,
					SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
					CREATE_NOT_DIR, &netfid, &oplock,
					NULL, cifs_sb->local_nls,
					cifs_sb->mnt_cifs_flags &
						CIFS_MOUNT_MAP_SPECIAL_CHR);
				if (rc==0) {
					int bytes_written;
					rc = CIFSSMBWrite(xid, pTcon,
							netfid, 0,
							attrs->ia_size,
							&bytes_written, NULL,
							NULL, 1 /* 45 sec */);
					cFYI(1,("wrt seteof rc %d",rc));
					CIFSSMBClose(xid, pTcon, netfid);
				}

			}
		}

		/* Server is ok setting allocation size implicitly - no need
		   to call:
		CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, TRUE,
			 cifs_sb->local_nls);
		   */

		if (rc == 0) {
			rc = vmtruncate(direntry->d_inode, attrs->ia_size);
			cifs_truncate_page(direntry->d_inode->i_mapping,
					   direntry->d_inode->i_size);
		} else 
			goto cifs_setattr_exit;
	}
	if (attrs->ia_valid & ATTR_UID) {
		cFYI(1, ("UID changed to %d", attrs->ia_uid));
		uid = attrs->ia_uid;
	}
	if (attrs->ia_valid & ATTR_GID) {
		cFYI(1, ("GID changed to %d", attrs->ia_gid));
		gid = attrs->ia_gid;
	}

	time_buf.Attributes = 0;
	if (attrs->ia_valid & ATTR_MODE) {
		cFYI(1, ("Mode changed to 0x%x", attrs->ia_mode));
		mode = attrs->ia_mode;
	}

	if ((cifs_sb->tcon->ses->capabilities & CAP_UNIX)
	    && (attrs->ia_valid & (ATTR_MODE | ATTR_GID | ATTR_UID)))
		rc = CIFSSMBUnixSetPerms(xid, pTcon, full_path, mode, uid, gid,
					 0 /* dev_t */, cifs_sb->local_nls,
					 cifs_sb->mnt_cifs_flags & 
						CIFS_MOUNT_MAP_SPECIAL_CHR);
	else if (attrs->ia_valid & ATTR_MODE) {
		rc = 0;
		if ((mode & S_IWUGO) == 0) /* not writeable */ {
			if ((cifsInode->cifsAttrs & ATTR_READONLY) == 0)
				time_buf.Attributes =
					cpu_to_le32(cifsInode->cifsAttrs |
						    ATTR_READONLY);
		} else if ((mode & S_IWUGO) == S_IWUGO) {
			if (cifsInode->cifsAttrs & ATTR_READONLY)
				time_buf.Attributes =
					cpu_to_le32(cifsInode->cifsAttrs &
						    (~ATTR_READONLY));
		}
		/* BB to be implemented -
		   via Windows security descriptors or streams */
		/* CIFSSMBWinSetPerms(xid, pTcon, full_path, mode, uid, gid,
				      cifs_sb->local_nls); */
	}

	if (attrs->ia_valid & ATTR_ATIME) {
		set_time = TRUE;
		time_buf.LastAccessTime =
		    cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
	} else
		time_buf.LastAccessTime = 0;

	if (attrs->ia_valid & ATTR_MTIME) {
		set_time = TRUE;
		time_buf.LastWriteTime =
		    cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
	} else
		time_buf.LastWriteTime = 0;
	/* Do not set ctime explicitly unless other time
	   stamps are changed explicitly (i.e. by utime()
	   since we would then have a mix of client and
	   server times */
	   
	if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
		set_time = TRUE;
		/* Although Samba throws this field away
		it may be useful to Windows - but we do
		not want to set ctime unless some other
		timestamp is changing */
		cFYI(1, ("CIFS - CTIME changed "));
		time_buf.ChangeTime =
		    cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
	} else
		time_buf.ChangeTime = 0;

	if (set_time || time_buf.Attributes) {
		time_buf.CreationTime = 0;	/* do not change */
		/* In the future we should experiment - try setting timestamps
		   via Handle (SetFileInfo) instead of by path */
		if (!(pTcon->ses->flags & CIFS_SES_NT4))
			rc = CIFSSMBSetTimes(xid, pTcon, full_path, &time_buf,
					     cifs_sb->local_nls,
					     cifs_sb->mnt_cifs_flags &
						CIFS_MOUNT_MAP_SPECIAL_CHR);
		else
			rc = -EOPNOTSUPP;

		if (rc == -EOPNOTSUPP) {
			int oplock = FALSE;
			__u16 netfid;

			cFYI(1, ("calling SetFileInfo since SetPathInfo for "
				 "times not supported by this server"));
			/* BB we could scan to see if we already have it open
			   and pass in pid of opener to function */
			rc = CIFSSMBOpen(xid, pTcon, full_path, FILE_OPEN,
					 SYNCHRONIZE | FILE_WRITE_ATTRIBUTES,
					 CREATE_NOT_DIR, &netfid, &oplock,
					 NULL, cifs_sb->local_nls,
					 cifs_sb->mnt_cifs_flags &
						CIFS_MOUNT_MAP_SPECIAL_CHR);
			if (rc==0) {
				rc = CIFSSMBSetFileTimes(xid, pTcon, &time_buf,
							 netfid);
				CIFSSMBClose(xid, pTcon, netfid);
			} else {
			/* BB For even older servers we could convert time_buf
			   into old DOS style which uses two second
			   granularity */

			/* rc = CIFSSMBSetTimesLegacy(xid, pTcon, full_path,
        	        		&time_buf, cifs_sb->local_nls); */
			}
		}
		/* Even if error on time set, no sense failing the call if
		the server would set the time to a reasonable value anyway,
		and this check ensures that we are not being called from
		sys_utimes in which case we ought to fail the call back to
		the user when the server rejects the call */
		if((rc) && (attrs->ia_valid &&
			 (ATTR_MODE | ATTR_GID | ATTR_UID | ATTR_SIZE)))
			rc = 0;
	}

	/* do not need local check to inode_check_ok since the server does
	   that */
	if (!rc)
		rc = inode_setattr(direntry->d_inode, attrs);
cifs_setattr_exit:
	kfree(full_path);
	FreeXid(xid);
	return rc;
}

void cifs_delete_inode(struct inode *inode)
{
	cFYI(1, ("In cifs_delete_inode, inode = 0x%p ", inode));
	/* may have to add back in if and when safe distributed caching of
	   directories added e.g. via FindNotify */
}