forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 17
/
inode.c
1068 lines (948 loc) · 27.1 KB
/
inode.c
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
/*
* inode.c
*
* Copyright (C) 1995, 1996 by Volker Lendecke
* Modified for big endian by J.F. Chadima and David S. Miller
* Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
* Modified 1998 Wolfram Pienkoss for NLS
* Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/uaccess.h>
#include <asm/byteorder.h>
#include <linux/time.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <linux/stat.h>
#include <linux/errno.h>
#include <linux/file.h>
#include <linux/fcntl.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/init.h>
#include <linux/vfs.h>
#include <linux/mount.h>
#include <linux/seq_file.h>
#include <linux/sched/signal.h>
#include <linux/namei.h>
#include <net/sock.h>
#include "ncp_fs.h"
#include "getopt.h"
#define NCP_DEFAULT_FILE_MODE 0600
#define NCP_DEFAULT_DIR_MODE 0700
#define NCP_DEFAULT_TIME_OUT 10
#define NCP_DEFAULT_RETRY_COUNT 20
static void ncp_evict_inode(struct inode *);
static void ncp_put_super(struct super_block *);
static int ncp_statfs(struct dentry *, struct kstatfs *);
static int ncp_show_options(struct seq_file *, struct dentry *);
static struct kmem_cache * ncp_inode_cachep;
static struct inode *ncp_alloc_inode(struct super_block *sb)
{
struct ncp_inode_info *ei;
ei = (struct ncp_inode_info *)kmem_cache_alloc(ncp_inode_cachep, GFP_KERNEL);
if (!ei)
return NULL;
return &ei->vfs_inode;
}
static void ncp_i_callback(struct rcu_head *head)
{
struct inode *inode = container_of(head, struct inode, i_rcu);
kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode));
}
static void ncp_destroy_inode(struct inode *inode)
{
call_rcu(&inode->i_rcu, ncp_i_callback);
}
static void init_once(void *foo)
{
struct ncp_inode_info *ei = (struct ncp_inode_info *) foo;
mutex_init(&ei->open_mutex);
inode_init_once(&ei->vfs_inode);
}
static int init_inodecache(void)
{
ncp_inode_cachep = kmem_cache_create("ncp_inode_cache",
sizeof(struct ncp_inode_info),
0, (SLAB_RECLAIM_ACCOUNT|
SLAB_MEM_SPREAD|SLAB_ACCOUNT),
init_once);
if (ncp_inode_cachep == NULL)
return -ENOMEM;
return 0;
}
static void destroy_inodecache(void)
{
/*
* Make sure all delayed rcu free inodes are flushed before we
* destroy cache.
*/
rcu_barrier();
kmem_cache_destroy(ncp_inode_cachep);
}
static int ncp_remount(struct super_block *sb, int *flags, char* data)
{
sync_filesystem(sb);
*flags |= MS_NODIRATIME;
return 0;
}
static const struct super_operations ncp_sops =
{
.alloc_inode = ncp_alloc_inode,
.destroy_inode = ncp_destroy_inode,
.drop_inode = generic_delete_inode,
.evict_inode = ncp_evict_inode,
.put_super = ncp_put_super,
.statfs = ncp_statfs,
.remount_fs = ncp_remount,
.show_options = ncp_show_options,
};
/*
* Fill in the ncpfs-specific information in the inode.
*/
static void ncp_update_dirent(struct inode *inode, struct ncp_entry_info *nwinfo)
{
NCP_FINFO(inode)->DosDirNum = nwinfo->i.DosDirNum;
NCP_FINFO(inode)->dirEntNum = nwinfo->i.dirEntNum;
NCP_FINFO(inode)->volNumber = nwinfo->volume;
}
void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo)
{
ncp_update_dirent(inode, nwinfo);
NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
NCP_FINFO(inode)->access = nwinfo->access;
memcpy(NCP_FINFO(inode)->file_handle, nwinfo->file_handle,
sizeof(nwinfo->file_handle));
ncp_dbg(1, "updated %s, volnum=%d, dirent=%u\n",
nwinfo->i.entryName, NCP_FINFO(inode)->volNumber,
NCP_FINFO(inode)->dirEntNum);
}
static void ncp_update_dates(struct inode *inode, struct nw_info_struct *nwi)
{
/* NFS namespace mode overrides others if it's set. */
ncp_dbg(1, "(%s) nfs.mode=0%o\n", nwi->entryName, nwi->nfs.mode);
if (nwi->nfs.mode) {
/* XXX Security? */
inode->i_mode = nwi->nfs.mode;
}
inode->i_blocks = (i_size_read(inode) + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT;
inode->i_mtime.tv_sec = ncp_date_dos2unix(nwi->modifyTime, nwi->modifyDate);
inode->i_ctime.tv_sec = ncp_date_dos2unix(nwi->creationTime, nwi->creationDate);
inode->i_atime.tv_sec = ncp_date_dos2unix(0, nwi->lastAccessDate);
inode->i_atime.tv_nsec = 0;
inode->i_mtime.tv_nsec = 0;
inode->i_ctime.tv_nsec = 0;
}
static void ncp_update_attrs(struct inode *inode, struct ncp_entry_info *nwinfo)
{
struct nw_info_struct *nwi = &nwinfo->i;
struct ncp_server *server = NCP_SERVER(inode);
if (nwi->attributes & aDIR) {
inode->i_mode = server->m.dir_mode;
/* for directories dataStreamSize seems to be some
Object ID ??? */
i_size_write(inode, NCP_BLOCK_SIZE);
} else {
u32 size;
inode->i_mode = server->m.file_mode;
size = le32_to_cpu(nwi->dataStreamSize);
i_size_write(inode, size);
#ifdef CONFIG_NCPFS_EXTRAS
if ((server->m.flags & (NCP_MOUNT_EXTRAS|NCP_MOUNT_SYMLINKS))
&& (nwi->attributes & aSHARED)) {
switch (nwi->attributes & (aHIDDEN|aSYSTEM)) {
case aHIDDEN:
if (server->m.flags & NCP_MOUNT_SYMLINKS) {
if (/* (size >= NCP_MIN_SYMLINK_SIZE)
&& */ (size <= NCP_MAX_SYMLINK_SIZE)) {
inode->i_mode = (inode->i_mode & ~S_IFMT) | S_IFLNK;
NCP_FINFO(inode)->flags |= NCPI_KLUDGE_SYMLINK;
break;
}
}
/* FALLTHROUGH */
case 0:
if (server->m.flags & NCP_MOUNT_EXTRAS)
inode->i_mode |= S_IRUGO;
break;
case aSYSTEM:
if (server->m.flags & NCP_MOUNT_EXTRAS)
inode->i_mode |= (inode->i_mode >> 2) & S_IXUGO;
break;
/* case aSYSTEM|aHIDDEN: */
default:
/* reserved combination */
break;
}
}
#endif
}
if (nwi->attributes & aRONLY) inode->i_mode &= ~S_IWUGO;
}
void ncp_update_inode2(struct inode* inode, struct ncp_entry_info *nwinfo)
{
NCP_FINFO(inode)->flags = 0;
if (!atomic_read(&NCP_FINFO(inode)->opened)) {
NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
ncp_update_attrs(inode, nwinfo);
}
ncp_update_dates(inode, &nwinfo->i);
ncp_update_dirent(inode, nwinfo);
}
/*
* Fill in the inode based on the ncp_entry_info structure. Used only for brand new inodes.
*/
static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo)
{
struct ncp_server *server = NCP_SERVER(inode);
NCP_FINFO(inode)->flags = 0;
ncp_update_attrs(inode, nwinfo);
ncp_dbg(2, "inode->i_mode = %u\n", inode->i_mode);
set_nlink(inode, 1);
inode->i_uid = server->m.uid;
inode->i_gid = server->m.gid;
ncp_update_dates(inode, &nwinfo->i);
ncp_update_inode(inode, nwinfo);
}
#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
static const struct inode_operations ncp_symlink_inode_operations = {
.get_link = page_get_link,
.setattr = ncp_notify_change,
};
#endif
/*
* Get a new inode.
*/
struct inode *
ncp_iget(struct super_block *sb, struct ncp_entry_info *info)
{
struct inode *inode;
if (info == NULL) {
pr_err("%s: info is NULL\n", __func__);
return NULL;
}
inode = new_inode(sb);
if (inode) {
atomic_set(&NCP_FINFO(inode)->opened, info->opened);
inode->i_ino = info->ino;
ncp_set_attr(inode, info);
if (S_ISREG(inode->i_mode)) {
inode->i_op = &ncp_file_inode_operations;
inode->i_fop = &ncp_file_operations;
} else if (S_ISDIR(inode->i_mode)) {
inode->i_op = &ncp_dir_inode_operations;
inode->i_fop = &ncp_dir_operations;
#ifdef CONFIG_NCPFS_NFS_NS
} else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
init_special_inode(inode, inode->i_mode,
new_decode_dev(info->i.nfs.rdev));
#endif
#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
} else if (S_ISLNK(inode->i_mode)) {
inode->i_op = &ncp_symlink_inode_operations;
inode_nohighmem(inode);
inode->i_data.a_ops = &ncp_symlink_aops;
#endif
} else {
make_bad_inode(inode);
}
insert_inode_hash(inode);
} else
pr_err("%s: iget failed!\n", __func__);
return inode;
}
static void
ncp_evict_inode(struct inode *inode)
{
truncate_inode_pages_final(&inode->i_data);
clear_inode(inode);
if (S_ISDIR(inode->i_mode)) {
ncp_dbg(2, "put directory %ld\n", inode->i_ino);
}
if (ncp_make_closed(inode) != 0) {
/* We can't do anything but complain. */
pr_err("%s: could not close\n", __func__);
}
}
static void ncp_stop_tasks(struct ncp_server *server) {
struct sock* sk = server->ncp_sock->sk;
lock_sock(sk);
sk->sk_error_report = server->error_report;
sk->sk_data_ready = server->data_ready;
sk->sk_write_space = server->write_space;
release_sock(sk);
del_timer_sync(&server->timeout_tm);
flush_work(&server->rcv.tq);
if (sk->sk_socket->type == SOCK_STREAM)
flush_work(&server->tx.tq);
else
flush_work(&server->timeout_tq);
}
static int ncp_show_options(struct seq_file *seq, struct dentry *root)
{
struct ncp_server *server = NCP_SBP(root->d_sb);
unsigned int tmp;
if (!uid_eq(server->m.uid, GLOBAL_ROOT_UID))
seq_printf(seq, ",uid=%u",
from_kuid_munged(&init_user_ns, server->m.uid));
if (!gid_eq(server->m.gid, GLOBAL_ROOT_GID))
seq_printf(seq, ",gid=%u",
from_kgid_munged(&init_user_ns, server->m.gid));
if (!uid_eq(server->m.mounted_uid, GLOBAL_ROOT_UID))
seq_printf(seq, ",owner=%u",
from_kuid_munged(&init_user_ns, server->m.mounted_uid));
tmp = server->m.file_mode & S_IALLUGO;
if (tmp != NCP_DEFAULT_FILE_MODE)
seq_printf(seq, ",mode=0%o", tmp);
tmp = server->m.dir_mode & S_IALLUGO;
if (tmp != NCP_DEFAULT_DIR_MODE)
seq_printf(seq, ",dirmode=0%o", tmp);
if (server->m.time_out != NCP_DEFAULT_TIME_OUT * HZ / 100) {
tmp = server->m.time_out * 100 / HZ;
seq_printf(seq, ",timeout=%u", tmp);
}
if (server->m.retry_count != NCP_DEFAULT_RETRY_COUNT)
seq_printf(seq, ",retry=%u", server->m.retry_count);
if (server->m.flags != 0)
seq_printf(seq, ",flags=%lu", server->m.flags);
if (server->m.wdog_pid != NULL)
seq_printf(seq, ",wdogpid=%u", pid_vnr(server->m.wdog_pid));
return 0;
}
static const struct ncp_option ncp_opts[] = {
{ "uid", OPT_INT, 'u' },
{ "gid", OPT_INT, 'g' },
{ "owner", OPT_INT, 'o' },
{ "mode", OPT_INT, 'm' },
{ "dirmode", OPT_INT, 'd' },
{ "timeout", OPT_INT, 't' },
{ "retry", OPT_INT, 'r' },
{ "flags", OPT_INT, 'f' },
{ "wdogpid", OPT_INT, 'w' },
{ "ncpfd", OPT_INT, 'n' },
{ "infofd", OPT_INT, 'i' }, /* v5 */
{ "version", OPT_INT, 'v' },
{ NULL, 0, 0 } };
static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) {
int optval;
char *optarg;
unsigned long optint;
int version = 0;
int ret;
data->flags = 0;
data->int_flags = 0;
data->mounted_uid = GLOBAL_ROOT_UID;
data->wdog_pid = NULL;
data->ncp_fd = ~0;
data->time_out = NCP_DEFAULT_TIME_OUT;
data->retry_count = NCP_DEFAULT_RETRY_COUNT;
data->uid = GLOBAL_ROOT_UID;
data->gid = GLOBAL_ROOT_GID;
data->file_mode = NCP_DEFAULT_FILE_MODE;
data->dir_mode = NCP_DEFAULT_DIR_MODE;
data->info_fd = -1;
data->mounted_vol[0] = 0;
while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
ret = optval;
if (ret < 0)
goto err;
switch (optval) {
case 'u':
data->uid = make_kuid(current_user_ns(), optint);
if (!uid_valid(data->uid)) {
ret = -EINVAL;
goto err;
}
break;
case 'g':
data->gid = make_kgid(current_user_ns(), optint);
if (!gid_valid(data->gid)) {
ret = -EINVAL;
goto err;
}
break;
case 'o':
data->mounted_uid = make_kuid(current_user_ns(), optint);
if (!uid_valid(data->mounted_uid)) {
ret = -EINVAL;
goto err;
}
break;
case 'm':
data->file_mode = optint;
break;
case 'd':
data->dir_mode = optint;
break;
case 't':
data->time_out = optint;
break;
case 'r':
data->retry_count = optint;
break;
case 'f':
data->flags = optint;
break;
case 'w':
data->wdog_pid = find_get_pid(optint);
break;
case 'n':
data->ncp_fd = optint;
break;
case 'i':
data->info_fd = optint;
break;
case 'v':
ret = -ECHRNG;
if (optint < NCP_MOUNT_VERSION_V4)
goto err;
if (optint > NCP_MOUNT_VERSION_V5)
goto err;
version = optint;
break;
}
}
return 0;
err:
put_pid(data->wdog_pid);
data->wdog_pid = NULL;
return ret;
}
static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
{
struct ncp_mount_data_kernel data;
struct ncp_server *server;
struct inode *root_inode;
struct socket *sock;
int error;
int default_bufsize;
#ifdef CONFIG_NCPFS_PACKET_SIGNING
int options;
#endif
struct ncp_entry_info finfo;
memset(&data, 0, sizeof(data));
server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL);
if (!server)
return -ENOMEM;
sb->s_fs_info = server;
error = -EFAULT;
if (raw_data == NULL)
goto out;
switch (*(int*)raw_data) {
case NCP_MOUNT_VERSION:
{
struct ncp_mount_data* md = (struct ncp_mount_data*)raw_data;
data.flags = md->flags;
data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE;
data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
data.wdog_pid = find_get_pid(md->wdog_pid);
data.ncp_fd = md->ncp_fd;
data.time_out = md->time_out;
data.retry_count = md->retry_count;
data.uid = make_kuid(current_user_ns(), md->uid);
data.gid = make_kgid(current_user_ns(), md->gid);
data.file_mode = md->file_mode;
data.dir_mode = md->dir_mode;
data.info_fd = -1;
memcpy(data.mounted_vol, md->mounted_vol,
NCP_VOLNAME_LEN+1);
}
break;
case NCP_MOUNT_VERSION_V4:
{
struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data;
data.flags = md->flags;
data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
data.wdog_pid = find_get_pid(md->wdog_pid);
data.ncp_fd = md->ncp_fd;
data.time_out = md->time_out;
data.retry_count = md->retry_count;
data.uid = make_kuid(current_user_ns(), md->uid);
data.gid = make_kgid(current_user_ns(), md->gid);
data.file_mode = md->file_mode;
data.dir_mode = md->dir_mode;
data.info_fd = -1;
}
break;
default:
error = -ECHRNG;
if (memcmp(raw_data, "vers", 4) == 0) {
error = ncp_parse_options(&data, raw_data);
}
if (error)
goto out;
break;
}
error = -EINVAL;
if (!uid_valid(data.mounted_uid) || !uid_valid(data.uid) ||
!gid_valid(data.gid))
goto out;
sock = sockfd_lookup(data.ncp_fd, &error);
if (!sock)
goto out;
if (sock->type == SOCK_STREAM)
default_bufsize = 0xF000;
else
default_bufsize = 1024;
sb->s_flags |= MS_NODIRATIME; /* probably even noatime */
sb->s_maxbytes = 0xFFFFFFFFU;
sb->s_blocksize = 1024; /* Eh... Is this correct? */
sb->s_blocksize_bits = 10;
sb->s_magic = NCP_SUPER_MAGIC;
sb->s_op = &ncp_sops;
sb->s_d_op = &ncp_dentry_operations;
server = NCP_SBP(sb);
memset(server, 0, sizeof(*server));
error = super_setup_bdi(sb);
if (error)
goto out_fput;
server->ncp_sock = sock;
if (data.info_fd != -1) {
struct socket *info_sock = sockfd_lookup(data.info_fd, &error);
if (!info_sock)
goto out_fput;
server->info_sock = info_sock;
error = -EBADFD;
if (info_sock->type != SOCK_STREAM)
goto out_fput2;
}
/* server->lock = 0; */
mutex_init(&server->mutex);
server->packet = NULL;
/* server->buffer_size = 0; */
/* server->conn_status = 0; */
/* server->root_dentry = NULL; */
/* server->root_setuped = 0; */
mutex_init(&server->root_setup_lock);
#ifdef CONFIG_NCPFS_PACKET_SIGNING
/* server->sign_wanted = 0; */
/* server->sign_active = 0; */
#endif
init_rwsem(&server->auth_rwsem);
server->auth.auth_type = NCP_AUTH_NONE;
/* server->auth.object_name_len = 0; */
/* server->auth.object_name = NULL; */
/* server->auth.object_type = 0; */
/* server->priv.len = 0; */
/* server->priv.data = NULL; */
server->m = data;
/* Although anything producing this is buggy, it happens
now because of PATH_MAX changes.. */
if (server->m.time_out < 1) {
server->m.time_out = 10;
pr_info("You need to recompile your ncpfs utils..\n");
}
server->m.time_out = server->m.time_out * HZ / 100;
server->m.file_mode = (server->m.file_mode & S_IRWXUGO) | S_IFREG;
server->m.dir_mode = (server->m.dir_mode & S_IRWXUGO) | S_IFDIR;
#ifdef CONFIG_NCPFS_NLS
/* load the default NLS charsets */
server->nls_vol = load_nls_default();
server->nls_io = load_nls_default();
#endif /* CONFIG_NCPFS_NLS */
atomic_set(&server->dentry_ttl, 0); /* no caching */
INIT_LIST_HEAD(&server->tx.requests);
mutex_init(&server->rcv.creq_mutex);
server->tx.creq = NULL;
server->rcv.creq = NULL;
init_timer(&server->timeout_tm);
#undef NCP_PACKET_SIZE
#define NCP_PACKET_SIZE 131072
error = -ENOMEM;
server->packet_size = NCP_PACKET_SIZE;
server->packet = vmalloc(NCP_PACKET_SIZE);
if (server->packet == NULL)
goto out_nls;
server->txbuf = vmalloc(NCP_PACKET_SIZE);
if (server->txbuf == NULL)
goto out_packet;
server->rxbuf = vmalloc(NCP_PACKET_SIZE);
if (server->rxbuf == NULL)
goto out_txbuf;
lock_sock(sock->sk);
server->data_ready = sock->sk->sk_data_ready;
server->write_space = sock->sk->sk_write_space;
server->error_report = sock->sk->sk_error_report;
sock->sk->sk_user_data = server;
sock->sk->sk_data_ready = ncp_tcp_data_ready;
sock->sk->sk_error_report = ncp_tcp_error_report;
if (sock->type == SOCK_STREAM) {
server->rcv.ptr = (unsigned char*)&server->rcv.buf;
server->rcv.len = 10;
server->rcv.state = 0;
INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc);
INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc);
sock->sk->sk_write_space = ncp_tcp_write_space;
} else {
INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc);
INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc);
server->timeout_tm.data = (unsigned long)server;
server->timeout_tm.function = ncpdgram_timeout_call;
}
release_sock(sock->sk);
ncp_lock_server(server);
error = ncp_connect(server);
ncp_unlock_server(server);
if (error < 0)
goto out_rxbuf;
ncp_dbg(1, "NCP_SBP(sb) = %p\n", NCP_SBP(sb));
error = -EMSGSIZE; /* -EREMOTESIDEINCOMPATIBLE */
#ifdef CONFIG_NCPFS_PACKET_SIGNING
if (ncp_negotiate_size_and_options(server, default_bufsize,
NCP_DEFAULT_OPTIONS, &(server->buffer_size), &options) == 0)
{
if (options != NCP_DEFAULT_OPTIONS)
{
if (ncp_negotiate_size_and_options(server,
default_bufsize,
options & 2,
&(server->buffer_size), &options) != 0)
{
goto out_disconnect;
}
}
ncp_lock_server(server);
if (options & 2)
server->sign_wanted = 1;
ncp_unlock_server(server);
}
else
#endif /* CONFIG_NCPFS_PACKET_SIGNING */
if (ncp_negotiate_buffersize(server, default_bufsize,
&(server->buffer_size)) != 0)
goto out_disconnect;
ncp_dbg(1, "bufsize = %d\n", server->buffer_size);
memset(&finfo, 0, sizeof(finfo));
finfo.i.attributes = aDIR;
finfo.i.dataStreamSize = 0; /* ignored */
finfo.i.dirEntNum = 0;
finfo.i.DosDirNum = 0;
#ifdef CONFIG_NCPFS_SMALLDOS
finfo.i.NSCreator = NW_NS_DOS;
#endif
finfo.volume = NCP_NUMBER_OF_VOLUMES;
/* set dates of mountpoint to Jan 1, 1986; 00:00 */
finfo.i.creationTime = finfo.i.modifyTime
= cpu_to_le16(0x0000);
finfo.i.creationDate = finfo.i.modifyDate
= finfo.i.lastAccessDate
= cpu_to_le16(0x0C21);
finfo.i.nameLen = 0;
finfo.i.entryName[0] = '\0';
finfo.opened = 0;
finfo.ino = 2; /* tradition */
server->name_space[finfo.volume] = NW_NS_DOS;
error = -ENOMEM;
root_inode = ncp_iget(sb, &finfo);
if (!root_inode)
goto out_disconnect;
ncp_dbg(1, "root vol=%d\n", NCP_FINFO(root_inode)->volNumber);
sb->s_root = d_make_root(root_inode);
if (!sb->s_root)
goto out_disconnect;
return 0;
out_disconnect:
ncp_lock_server(server);
ncp_disconnect(server);
ncp_unlock_server(server);
out_rxbuf:
ncp_stop_tasks(server);
vfree(server->rxbuf);
out_txbuf:
vfree(server->txbuf);
out_packet:
vfree(server->packet);
out_nls:
#ifdef CONFIG_NCPFS_NLS
unload_nls(server->nls_io);
unload_nls(server->nls_vol);
#endif
mutex_destroy(&server->rcv.creq_mutex);
mutex_destroy(&server->root_setup_lock);
mutex_destroy(&server->mutex);
out_fput2:
if (server->info_sock)
sockfd_put(server->info_sock);
out_fput:
sockfd_put(sock);
out:
put_pid(data.wdog_pid);
sb->s_fs_info = NULL;
kfree(server);
return error;
}
static void delayed_free(struct rcu_head *p)
{
struct ncp_server *server = container_of(p, struct ncp_server, rcu);
#ifdef CONFIG_NCPFS_NLS
/* unload the NLS charsets */
unload_nls(server->nls_vol);
unload_nls(server->nls_io);
#endif /* CONFIG_NCPFS_NLS */
kfree(server);
}
static void ncp_put_super(struct super_block *sb)
{
struct ncp_server *server = NCP_SBP(sb);
ncp_lock_server(server);
ncp_disconnect(server);
ncp_unlock_server(server);
ncp_stop_tasks(server);
mutex_destroy(&server->rcv.creq_mutex);
mutex_destroy(&server->root_setup_lock);
mutex_destroy(&server->mutex);
if (server->info_sock)
sockfd_put(server->info_sock);
sockfd_put(server->ncp_sock);
kill_pid(server->m.wdog_pid, SIGTERM, 1);
put_pid(server->m.wdog_pid);
kfree(server->priv.data);
kfree(server->auth.object_name);
vfree(server->rxbuf);
vfree(server->txbuf);
vfree(server->packet);
call_rcu(&server->rcu, delayed_free);
}
static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct dentry* d;
struct inode* i;
struct ncp_inode_info* ni;
struct ncp_server* s;
struct ncp_volume_info vi;
struct super_block *sb = dentry->d_sb;
int err;
__u8 dh;
d = sb->s_root;
if (!d) {
goto dflt;
}
i = d_inode(d);
if (!i) {
goto dflt;
}
ni = NCP_FINFO(i);
if (!ni) {
goto dflt;
}
s = NCP_SBP(sb);
if (!s) {
goto dflt;
}
if (!s->m.mounted_vol[0]) {
goto dflt;
}
err = ncp_dirhandle_alloc(s, ni->volNumber, ni->DosDirNum, &dh);
if (err) {
goto dflt;
}
err = ncp_get_directory_info(s, dh, &vi);
ncp_dirhandle_free(s, dh);
if (err) {
goto dflt;
}
buf->f_type = NCP_SUPER_MAGIC;
buf->f_bsize = vi.sectors_per_block * 512;
buf->f_blocks = vi.total_blocks;
buf->f_bfree = vi.free_blocks;
buf->f_bavail = vi.free_blocks;
buf->f_files = vi.total_dir_entries;
buf->f_ffree = vi.available_dir_entries;
buf->f_namelen = 12;
return 0;
/* We cannot say how much disk space is left on a mounted
NetWare Server, because free space is distributed over
volumes, and the current user might have disk quotas. So
free space is not that simple to determine. Our decision
here is to err conservatively. */
dflt:;
buf->f_type = NCP_SUPER_MAGIC;
buf->f_bsize = NCP_BLOCK_SIZE;
buf->f_blocks = 0;
buf->f_bfree = 0;
buf->f_bavail = 0;
buf->f_namelen = 12;
return 0;
}
int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
{
struct inode *inode = d_inode(dentry);
int result = 0;
__le32 info_mask;
struct nw_modify_dos_info info;
struct ncp_server *server;
result = -EIO;
server = NCP_SERVER(inode);
if (!server) /* How this could happen? */
goto out;
result = -EPERM;
if (IS_DEADDIR(d_inode(dentry)))
goto out;
/* ageing the dentry to force validation */
ncp_age_dentry(server, dentry);
result = setattr_prepare(dentry, attr);
if (result < 0)
goto out;
result = -EPERM;
if ((attr->ia_valid & ATTR_UID) && !uid_eq(attr->ia_uid, server->m.uid))
goto out;
if ((attr->ia_valid & ATTR_GID) && !gid_eq(attr->ia_gid, server->m.gid))
goto out;
if (((attr->ia_valid & ATTR_MODE) &&
(attr->ia_mode &
~(S_IFREG | S_IFDIR | S_IRWXUGO))))
goto out;
info_mask = 0;
memset(&info, 0, sizeof(info));
#if 1
if ((attr->ia_valid & ATTR_MODE) != 0)
{
umode_t newmode = attr->ia_mode;
info_mask |= DM_ATTRIBUTES;
if (S_ISDIR(inode->i_mode)) {
newmode &= server->m.dir_mode;
} else {
#ifdef CONFIG_NCPFS_EXTRAS
if (server->m.flags & NCP_MOUNT_EXTRAS) {
/* any non-default execute bit set */
if (newmode & ~server->m.file_mode & S_IXUGO)
info.attributes |= aSHARED | aSYSTEM;
/* read for group/world and not in default file_mode */
else if (newmode & ~server->m.file_mode & S_IRUGO)
info.attributes |= aSHARED;
} else
#endif
newmode &= server->m.file_mode;
}
if (newmode & S_IWUGO)
info.attributes &= ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
else
info.attributes |= (aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
#ifdef CONFIG_NCPFS_NFS_NS
if (ncp_is_nfs_extras(server, NCP_FINFO(inode)->volNumber)) {
result = ncp_modify_nfs_info(server,
NCP_FINFO(inode)->volNumber,
NCP_FINFO(inode)->dirEntNum,
attr->ia_mode, 0);
if (result != 0)
goto out;
info.attributes &= ~(aSHARED | aSYSTEM);
{
/* mark partial success */
struct iattr tmpattr;
tmpattr.ia_valid = ATTR_MODE;
tmpattr.ia_mode = attr->ia_mode;
setattr_copy(inode, &tmpattr);
mark_inode_dirty(inode);
}
}
#endif
}
#endif
/* Do SIZE before attributes, otherwise mtime together with size does not work...
*/
if ((attr->ia_valid & ATTR_SIZE) != 0) {
int written;
ncp_dbg(1, "trying to change size to %llu\n", attr->ia_size);
if ((result = ncp_make_open(inode, O_WRONLY)) < 0) {
result = -EACCES;
goto out;
}
ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle,
attr->ia_size, 0, "", &written);
/* According to ndir, the changes only take effect after
closing the file */
ncp_inode_close(inode);
result = ncp_make_closed(inode);
if (result)
goto out;
if (attr->ia_size != i_size_read(inode)) {
truncate_setsize(inode, attr->ia_size);
mark_inode_dirty(inode);
}
}
if ((attr->ia_valid & ATTR_CTIME) != 0) {
info_mask |= (DM_CREATE_TIME | DM_CREATE_DATE);
ncp_date_unix2dos(attr->ia_ctime.tv_sec,
&info.creationTime, &info.creationDate);
}
if ((attr->ia_valid & ATTR_MTIME) != 0) {
info_mask |= (DM_MODIFY_TIME | DM_MODIFY_DATE);
ncp_date_unix2dos(attr->ia_mtime.tv_sec,
&info.modifyTime, &info.modifyDate);
}
if ((attr->ia_valid & ATTR_ATIME) != 0) {
__le16 dummy;
info_mask |= (DM_LAST_ACCESS_DATE);
ncp_date_unix2dos(attr->ia_atime.tv_sec,
&dummy, &info.lastAccessDate);
}
if (info_mask != 0) {
result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),
inode, info_mask, &info);
if (result != 0) {
if (info_mask == (DM_CREATE_TIME | DM_CREATE_DATE)) {
/* NetWare seems not to allow this. I