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12#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
13
14#include <linux/module.h>
15
16#include <asm/uaccess.h>
17#include <asm/byteorder.h>
18
19#include <linux/time.h>
20#include <linux/kernel.h>
21#include <linux/mm.h>
22#include <linux/string.h>
23#include <linux/stat.h>
24#include <linux/errno.h>
25#include <linux/file.h>
26#include <linux/fcntl.h>
27#include <linux/slab.h>
28#include <linux/vmalloc.h>
29#include <linux/init.h>
30#include <linux/vfs.h>
31#include <linux/mount.h>
32#include <linux/seq_file.h>
33#include <linux/namei.h>
34
35#include <net/sock.h>
36
37#include "ncp_fs.h"
38#include "getopt.h"
39
40#define NCP_DEFAULT_FILE_MODE 0600
41#define NCP_DEFAULT_DIR_MODE 0700
42#define NCP_DEFAULT_TIME_OUT 10
43#define NCP_DEFAULT_RETRY_COUNT 20
44
45static void ncp_evict_inode(struct inode *);
46static void ncp_put_super(struct super_block *);
47static int ncp_statfs(struct dentry *, struct kstatfs *);
48static int ncp_show_options(struct seq_file *, struct dentry *);
49
50static struct kmem_cache * ncp_inode_cachep;
51
52static struct inode *ncp_alloc_inode(struct super_block *sb)
53{
54 struct ncp_inode_info *ei;
55 ei = (struct ncp_inode_info *)kmem_cache_alloc(ncp_inode_cachep, GFP_KERNEL);
56 if (!ei)
57 return NULL;
58 return &ei->vfs_inode;
59}
60
61static void ncp_i_callback(struct rcu_head *head)
62{
63 struct inode *inode = container_of(head, struct inode, i_rcu);
64 kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode));
65}
66
67static void ncp_destroy_inode(struct inode *inode)
68{
69 call_rcu(&inode->i_rcu, ncp_i_callback);
70}
71
72static void init_once(void *foo)
73{
74 struct ncp_inode_info *ei = (struct ncp_inode_info *) foo;
75
76 mutex_init(&ei->open_mutex);
77 inode_init_once(&ei->vfs_inode);
78}
79
80static int init_inodecache(void)
81{
82 ncp_inode_cachep = kmem_cache_create("ncp_inode_cache",
83 sizeof(struct ncp_inode_info),
84 0, (SLAB_RECLAIM_ACCOUNT|
85 SLAB_MEM_SPREAD|SLAB_ACCOUNT),
86 init_once);
87 if (ncp_inode_cachep == NULL)
88 return -ENOMEM;
89 return 0;
90}
91
92static void destroy_inodecache(void)
93{
94
95
96
97
98 rcu_barrier();
99 kmem_cache_destroy(ncp_inode_cachep);
100}
101
102static int ncp_remount(struct super_block *sb, int *flags, char* data)
103{
104 sync_filesystem(sb);
105 *flags |= MS_NODIRATIME;
106 return 0;
107}
108
109static const struct super_operations ncp_sops =
110{
111 .alloc_inode = ncp_alloc_inode,
112 .destroy_inode = ncp_destroy_inode,
113 .drop_inode = generic_delete_inode,
114 .evict_inode = ncp_evict_inode,
115 .put_super = ncp_put_super,
116 .statfs = ncp_statfs,
117 .remount_fs = ncp_remount,
118 .show_options = ncp_show_options,
119};
120
121
122
123
124static void ncp_update_dirent(struct inode *inode, struct ncp_entry_info *nwinfo)
125{
126 NCP_FINFO(inode)->DosDirNum = nwinfo->i.DosDirNum;
127 NCP_FINFO(inode)->dirEntNum = nwinfo->i.dirEntNum;
128 NCP_FINFO(inode)->volNumber = nwinfo->volume;
129}
130
131void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo)
132{
133 ncp_update_dirent(inode, nwinfo);
134 NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
135 NCP_FINFO(inode)->access = nwinfo->access;
136 memcpy(NCP_FINFO(inode)->file_handle, nwinfo->file_handle,
137 sizeof(nwinfo->file_handle));
138 ncp_dbg(1, "updated %s, volnum=%d, dirent=%u\n",
139 nwinfo->i.entryName, NCP_FINFO(inode)->volNumber,
140 NCP_FINFO(inode)->dirEntNum);
141}
142
143static void ncp_update_dates(struct inode *inode, struct nw_info_struct *nwi)
144{
145
146 ncp_dbg(1, "(%s) nfs.mode=0%o\n", nwi->entryName, nwi->nfs.mode);
147 if (nwi->nfs.mode) {
148
149 inode->i_mode = nwi->nfs.mode;
150 }
151
152 inode->i_blocks = (i_size_read(inode) + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT;
153
154 inode->i_mtime.tv_sec = ncp_date_dos2unix(nwi->modifyTime, nwi->modifyDate);
155 inode->i_ctime.tv_sec = ncp_date_dos2unix(nwi->creationTime, nwi->creationDate);
156 inode->i_atime.tv_sec = ncp_date_dos2unix(0, nwi->lastAccessDate);
157 inode->i_atime.tv_nsec = 0;
158 inode->i_mtime.tv_nsec = 0;
159 inode->i_ctime.tv_nsec = 0;
160}
161
162static void ncp_update_attrs(struct inode *inode, struct ncp_entry_info *nwinfo)
163{
164 struct nw_info_struct *nwi = &nwinfo->i;
165 struct ncp_server *server = NCP_SERVER(inode);
166
167 if (nwi->attributes & aDIR) {
168 inode->i_mode = server->m.dir_mode;
169
170
171 i_size_write(inode, NCP_BLOCK_SIZE);
172 } else {
173 u32 size;
174
175 inode->i_mode = server->m.file_mode;
176 size = le32_to_cpu(nwi->dataStreamSize);
177 i_size_write(inode, size);
178#ifdef CONFIG_NCPFS_EXTRAS
179 if ((server->m.flags & (NCP_MOUNT_EXTRAS|NCP_MOUNT_SYMLINKS))
180 && (nwi->attributes & aSHARED)) {
181 switch (nwi->attributes & (aHIDDEN|aSYSTEM)) {
182 case aHIDDEN:
183 if (server->m.flags & NCP_MOUNT_SYMLINKS) {
184 if (
185 (size <= NCP_MAX_SYMLINK_SIZE)) {
186 inode->i_mode = (inode->i_mode & ~S_IFMT) | S_IFLNK;
187 NCP_FINFO(inode)->flags |= NCPI_KLUDGE_SYMLINK;
188 break;
189 }
190 }
191
192 case 0:
193 if (server->m.flags & NCP_MOUNT_EXTRAS)
194 inode->i_mode |= S_IRUGO;
195 break;
196 case aSYSTEM:
197 if (server->m.flags & NCP_MOUNT_EXTRAS)
198 inode->i_mode |= (inode->i_mode >> 2) & S_IXUGO;
199 break;
200
201 default:
202
203 break;
204 }
205 }
206#endif
207 }
208 if (nwi->attributes & aRONLY) inode->i_mode &= ~S_IWUGO;
209}
210
211void ncp_update_inode2(struct inode* inode, struct ncp_entry_info *nwinfo)
212{
213 NCP_FINFO(inode)->flags = 0;
214 if (!atomic_read(&NCP_FINFO(inode)->opened)) {
215 NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
216 ncp_update_attrs(inode, nwinfo);
217 }
218
219 ncp_update_dates(inode, &nwinfo->i);
220 ncp_update_dirent(inode, nwinfo);
221}
222
223
224
225
226static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo)
227{
228 struct ncp_server *server = NCP_SERVER(inode);
229
230 NCP_FINFO(inode)->flags = 0;
231
232 ncp_update_attrs(inode, nwinfo);
233
234 ncp_dbg(2, "inode->i_mode = %u\n", inode->i_mode);
235
236 set_nlink(inode, 1);
237 inode->i_uid = server->m.uid;
238 inode->i_gid = server->m.gid;
239
240 ncp_update_dates(inode, &nwinfo->i);
241 ncp_update_inode(inode, nwinfo);
242}
243
244#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
245static const struct inode_operations ncp_symlink_inode_operations = {
246 .readlink = generic_readlink,
247 .get_link = page_get_link,
248 .setattr = ncp_notify_change,
249};
250#endif
251
252
253
254
255struct inode *
256ncp_iget(struct super_block *sb, struct ncp_entry_info *info)
257{
258 struct inode *inode;
259
260 if (info == NULL) {
261 pr_err("%s: info is NULL\n", __func__);
262 return NULL;
263 }
264
265 inode = new_inode(sb);
266 if (inode) {
267 atomic_set(&NCP_FINFO(inode)->opened, info->opened);
268
269 inode->i_ino = info->ino;
270 ncp_set_attr(inode, info);
271 if (S_ISREG(inode->i_mode)) {
272 inode->i_op = &ncp_file_inode_operations;
273 inode->i_fop = &ncp_file_operations;
274 } else if (S_ISDIR(inode->i_mode)) {
275 inode->i_op = &ncp_dir_inode_operations;
276 inode->i_fop = &ncp_dir_operations;
277#ifdef CONFIG_NCPFS_NFS_NS
278 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
279 init_special_inode(inode, inode->i_mode,
280 new_decode_dev(info->i.nfs.rdev));
281#endif
282#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
283 } else if (S_ISLNK(inode->i_mode)) {
284 inode->i_op = &ncp_symlink_inode_operations;
285 inode_nohighmem(inode);
286 inode->i_data.a_ops = &ncp_symlink_aops;
287#endif
288 } else {
289 make_bad_inode(inode);
290 }
291 insert_inode_hash(inode);
292 } else
293 pr_err("%s: iget failed!\n", __func__);
294 return inode;
295}
296
297static void
298ncp_evict_inode(struct inode *inode)
299{
300 truncate_inode_pages_final(&inode->i_data);
301 clear_inode(inode);
302
303 if (S_ISDIR(inode->i_mode)) {
304 ncp_dbg(2, "put directory %ld\n", inode->i_ino);
305 }
306
307 if (ncp_make_closed(inode) != 0) {
308
309 pr_err("%s: could not close\n", __func__);
310 }
311}
312
313static void ncp_stop_tasks(struct ncp_server *server) {
314 struct sock* sk = server->ncp_sock->sk;
315
316 lock_sock(sk);
317 sk->sk_error_report = server->error_report;
318 sk->sk_data_ready = server->data_ready;
319 sk->sk_write_space = server->write_space;
320 release_sock(sk);
321 del_timer_sync(&server->timeout_tm);
322
323 flush_work(&server->rcv.tq);
324 if (sk->sk_socket->type == SOCK_STREAM)
325 flush_work(&server->tx.tq);
326 else
327 flush_work(&server->timeout_tq);
328}
329
330static int ncp_show_options(struct seq_file *seq, struct dentry *root)
331{
332 struct ncp_server *server = NCP_SBP(root->d_sb);
333 unsigned int tmp;
334
335 if (!uid_eq(server->m.uid, GLOBAL_ROOT_UID))
336 seq_printf(seq, ",uid=%u",
337 from_kuid_munged(&init_user_ns, server->m.uid));
338 if (!gid_eq(server->m.gid, GLOBAL_ROOT_GID))
339 seq_printf(seq, ",gid=%u",
340 from_kgid_munged(&init_user_ns, server->m.gid));
341 if (!uid_eq(server->m.mounted_uid, GLOBAL_ROOT_UID))
342 seq_printf(seq, ",owner=%u",
343 from_kuid_munged(&init_user_ns, server->m.mounted_uid));
344 tmp = server->m.file_mode & S_IALLUGO;
345 if (tmp != NCP_DEFAULT_FILE_MODE)
346 seq_printf(seq, ",mode=0%o", tmp);
347 tmp = server->m.dir_mode & S_IALLUGO;
348 if (tmp != NCP_DEFAULT_DIR_MODE)
349 seq_printf(seq, ",dirmode=0%o", tmp);
350 if (server->m.time_out != NCP_DEFAULT_TIME_OUT * HZ / 100) {
351 tmp = server->m.time_out * 100 / HZ;
352 seq_printf(seq, ",timeout=%u", tmp);
353 }
354 if (server->m.retry_count != NCP_DEFAULT_RETRY_COUNT)
355 seq_printf(seq, ",retry=%u", server->m.retry_count);
356 if (server->m.flags != 0)
357 seq_printf(seq, ",flags=%lu", server->m.flags);
358 if (server->m.wdog_pid != NULL)
359 seq_printf(seq, ",wdogpid=%u", pid_vnr(server->m.wdog_pid));
360
361 return 0;
362}
363
364static const struct ncp_option ncp_opts[] = {
365 { "uid", OPT_INT, 'u' },
366 { "gid", OPT_INT, 'g' },
367 { "owner", OPT_INT, 'o' },
368 { "mode", OPT_INT, 'm' },
369 { "dirmode", OPT_INT, 'd' },
370 { "timeout", OPT_INT, 't' },
371 { "retry", OPT_INT, 'r' },
372 { "flags", OPT_INT, 'f' },
373 { "wdogpid", OPT_INT, 'w' },
374 { "ncpfd", OPT_INT, 'n' },
375 { "infofd", OPT_INT, 'i' },
376 { "version", OPT_INT, 'v' },
377 { NULL, 0, 0 } };
378
379static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) {
380 int optval;
381 char *optarg;
382 unsigned long optint;
383 int version = 0;
384 int ret;
385
386 data->flags = 0;
387 data->int_flags = 0;
388 data->mounted_uid = GLOBAL_ROOT_UID;
389 data->wdog_pid = NULL;
390 data->ncp_fd = ~0;
391 data->time_out = NCP_DEFAULT_TIME_OUT;
392 data->retry_count = NCP_DEFAULT_RETRY_COUNT;
393 data->uid = GLOBAL_ROOT_UID;
394 data->gid = GLOBAL_ROOT_GID;
395 data->file_mode = NCP_DEFAULT_FILE_MODE;
396 data->dir_mode = NCP_DEFAULT_DIR_MODE;
397 data->info_fd = -1;
398 data->mounted_vol[0] = 0;
399
400 while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
401 ret = optval;
402 if (ret < 0)
403 goto err;
404 switch (optval) {
405 case 'u':
406 data->uid = make_kuid(current_user_ns(), optint);
407 if (!uid_valid(data->uid)) {
408 ret = -EINVAL;
409 goto err;
410 }
411 break;
412 case 'g':
413 data->gid = make_kgid(current_user_ns(), optint);
414 if (!gid_valid(data->gid)) {
415 ret = -EINVAL;
416 goto err;
417 }
418 break;
419 case 'o':
420 data->mounted_uid = make_kuid(current_user_ns(), optint);
421 if (!uid_valid(data->mounted_uid)) {
422 ret = -EINVAL;
423 goto err;
424 }
425 break;
426 case 'm':
427 data->file_mode = optint;
428 break;
429 case 'd':
430 data->dir_mode = optint;
431 break;
432 case 't':
433 data->time_out = optint;
434 break;
435 case 'r':
436 data->retry_count = optint;
437 break;
438 case 'f':
439 data->flags = optint;
440 break;
441 case 'w':
442 data->wdog_pid = find_get_pid(optint);
443 break;
444 case 'n':
445 data->ncp_fd = optint;
446 break;
447 case 'i':
448 data->info_fd = optint;
449 break;
450 case 'v':
451 ret = -ECHRNG;
452 if (optint < NCP_MOUNT_VERSION_V4)
453 goto err;
454 if (optint > NCP_MOUNT_VERSION_V5)
455 goto err;
456 version = optint;
457 break;
458
459 }
460 }
461 return 0;
462err:
463 put_pid(data->wdog_pid);
464 data->wdog_pid = NULL;
465 return ret;
466}
467
468static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
469{
470 struct ncp_mount_data_kernel data;
471 struct ncp_server *server;
472 struct inode *root_inode;
473 struct socket *sock;
474 int error;
475 int default_bufsize;
476#ifdef CONFIG_NCPFS_PACKET_SIGNING
477 int options;
478#endif
479 struct ncp_entry_info finfo;
480
481 memset(&data, 0, sizeof(data));
482 server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL);
483 if (!server)
484 return -ENOMEM;
485 sb->s_fs_info = server;
486
487 error = -EFAULT;
488 if (raw_data == NULL)
489 goto out;
490 switch (*(int*)raw_data) {
491 case NCP_MOUNT_VERSION:
492 {
493 struct ncp_mount_data* md = (struct ncp_mount_data*)raw_data;
494
495 data.flags = md->flags;
496 data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE;
497 data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
498 data.wdog_pid = find_get_pid(md->wdog_pid);
499 data.ncp_fd = md->ncp_fd;
500 data.time_out = md->time_out;
501 data.retry_count = md->retry_count;
502 data.uid = make_kuid(current_user_ns(), md->uid);
503 data.gid = make_kgid(current_user_ns(), md->gid);
504 data.file_mode = md->file_mode;
505 data.dir_mode = md->dir_mode;
506 data.info_fd = -1;
507 memcpy(data.mounted_vol, md->mounted_vol,
508 NCP_VOLNAME_LEN+1);
509 }
510 break;
511 case NCP_MOUNT_VERSION_V4:
512 {
513 struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data;
514
515 data.flags = md->flags;
516 data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
517 data.wdog_pid = find_get_pid(md->wdog_pid);
518 data.ncp_fd = md->ncp_fd;
519 data.time_out = md->time_out;
520 data.retry_count = md->retry_count;
521 data.uid = make_kuid(current_user_ns(), md->uid);
522 data.gid = make_kgid(current_user_ns(), md->gid);
523 data.file_mode = md->file_mode;
524 data.dir_mode = md->dir_mode;
525 data.info_fd = -1;
526 }
527 break;
528 default:
529 error = -ECHRNG;
530 if (memcmp(raw_data, "vers", 4) == 0) {
531 error = ncp_parse_options(&data, raw_data);
532 }
533 if (error)
534 goto out;
535 break;
536 }
537 error = -EINVAL;
538 if (!uid_valid(data.mounted_uid) || !uid_valid(data.uid) ||
539 !gid_valid(data.gid))
540 goto out;
541 sock = sockfd_lookup(data.ncp_fd, &error);
542 if (!sock)
543 goto out;
544
545 if (sock->type == SOCK_STREAM)
546 default_bufsize = 0xF000;
547 else
548 default_bufsize = 1024;
549
550 sb->s_flags |= MS_NODIRATIME;
551 sb->s_maxbytes = 0xFFFFFFFFU;
552 sb->s_blocksize = 1024;
553 sb->s_blocksize_bits = 10;
554 sb->s_magic = NCP_SUPER_MAGIC;
555 sb->s_op = &ncp_sops;
556 sb->s_d_op = &ncp_dentry_operations;
557 sb->s_bdi = &server->bdi;
558
559 server = NCP_SBP(sb);
560 memset(server, 0, sizeof(*server));
561
562 error = bdi_setup_and_register(&server->bdi, "ncpfs");
563 if (error)
564 goto out_fput;
565
566 server->ncp_sock = sock;
567
568 if (data.info_fd != -1) {
569 struct socket *info_sock = sockfd_lookup(data.info_fd, &error);
570 if (!info_sock)
571 goto out_bdi;
572 server->info_sock = info_sock;
573 error = -EBADFD;
574 if (info_sock->type != SOCK_STREAM)
575 goto out_fput2;
576 }
577
578
579 mutex_init(&server->mutex);
580 server->packet = NULL;
581
582
583
584
585 mutex_init(&server->root_setup_lock);
586#ifdef CONFIG_NCPFS_PACKET_SIGNING
587
588
589#endif
590 init_rwsem(&server->auth_rwsem);
591 server->auth.auth_type = NCP_AUTH_NONE;
592
593
594
595
596
597
598 server->m = data;
599
600
601 if (server->m.time_out < 1) {
602 server->m.time_out = 10;
603 pr_info("You need to recompile your ncpfs utils..\n");
604 }
605 server->m.time_out = server->m.time_out * HZ / 100;
606 server->m.file_mode = (server->m.file_mode & S_IRWXUGO) | S_IFREG;
607 server->m.dir_mode = (server->m.dir_mode & S_IRWXUGO) | S_IFDIR;
608
609#ifdef CONFIG_NCPFS_NLS
610
611 server->nls_vol = load_nls_default();
612 server->nls_io = load_nls_default();
613#endif
614
615 atomic_set(&server->dentry_ttl, 0);
616
617 INIT_LIST_HEAD(&server->tx.requests);
618 mutex_init(&server->rcv.creq_mutex);
619 server->tx.creq = NULL;
620 server->rcv.creq = NULL;
621
622 init_timer(&server->timeout_tm);
623#undef NCP_PACKET_SIZE
624#define NCP_PACKET_SIZE 131072
625 error = -ENOMEM;
626 server->packet_size = NCP_PACKET_SIZE;
627 server->packet = vmalloc(NCP_PACKET_SIZE);
628 if (server->packet == NULL)
629 goto out_nls;
630 server->txbuf = vmalloc(NCP_PACKET_SIZE);
631 if (server->txbuf == NULL)
632 goto out_packet;
633 server->rxbuf = vmalloc(NCP_PACKET_SIZE);
634 if (server->rxbuf == NULL)
635 goto out_txbuf;
636
637 lock_sock(sock->sk);
638 server->data_ready = sock->sk->sk_data_ready;
639 server->write_space = sock->sk->sk_write_space;
640 server->error_report = sock->sk->sk_error_report;
641 sock->sk->sk_user_data = server;
642 sock->sk->sk_data_ready = ncp_tcp_data_ready;
643 sock->sk->sk_error_report = ncp_tcp_error_report;
644 if (sock->type == SOCK_STREAM) {
645 server->rcv.ptr = (unsigned char*)&server->rcv.buf;
646 server->rcv.len = 10;
647 server->rcv.state = 0;
648 INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc);
649 INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc);
650 sock->sk->sk_write_space = ncp_tcp_write_space;
651 } else {
652 INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc);
653 INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc);
654 server->timeout_tm.data = (unsigned long)server;
655 server->timeout_tm.function = ncpdgram_timeout_call;
656 }
657 release_sock(sock->sk);
658
659 ncp_lock_server(server);
660 error = ncp_connect(server);
661 ncp_unlock_server(server);
662 if (error < 0)
663 goto out_rxbuf;
664 ncp_dbg(1, "NCP_SBP(sb) = %p\n", NCP_SBP(sb));
665
666 error = -EMSGSIZE;
667#ifdef CONFIG_NCPFS_PACKET_SIGNING
668 if (ncp_negotiate_size_and_options(server, default_bufsize,
669 NCP_DEFAULT_OPTIONS, &(server->buffer_size), &options) == 0)
670 {
671 if (options != NCP_DEFAULT_OPTIONS)
672 {
673 if (ncp_negotiate_size_and_options(server,
674 default_bufsize,
675 options & 2,
676 &(server->buffer_size), &options) != 0)
677
678 {
679 goto out_disconnect;
680 }
681 }
682 ncp_lock_server(server);
683 if (options & 2)
684 server->sign_wanted = 1;
685 ncp_unlock_server(server);
686 }
687 else
688#endif
689 if (ncp_negotiate_buffersize(server, default_bufsize,
690 &(server->buffer_size)) != 0)
691 goto out_disconnect;
692 ncp_dbg(1, "bufsize = %d\n", server->buffer_size);
693
694 memset(&finfo, 0, sizeof(finfo));
695 finfo.i.attributes = aDIR;
696 finfo.i.dataStreamSize = 0;
697 finfo.i.dirEntNum = 0;
698 finfo.i.DosDirNum = 0;
699#ifdef CONFIG_NCPFS_SMALLDOS
700 finfo.i.NSCreator = NW_NS_DOS;
701#endif
702 finfo.volume = NCP_NUMBER_OF_VOLUMES;
703
704 finfo.i.creationTime = finfo.i.modifyTime
705 = cpu_to_le16(0x0000);
706 finfo.i.creationDate = finfo.i.modifyDate
707 = finfo.i.lastAccessDate
708 = cpu_to_le16(0x0C21);
709 finfo.i.nameLen = 0;
710 finfo.i.entryName[0] = '\0';
711
712 finfo.opened = 0;
713 finfo.ino = 2;
714
715 server->name_space[finfo.volume] = NW_NS_DOS;
716
717 error = -ENOMEM;
718 root_inode = ncp_iget(sb, &finfo);
719 if (!root_inode)
720 goto out_disconnect;
721 ncp_dbg(1, "root vol=%d\n", NCP_FINFO(root_inode)->volNumber);
722 sb->s_root = d_make_root(root_inode);
723 if (!sb->s_root)
724 goto out_disconnect;
725 return 0;
726
727out_disconnect:
728 ncp_lock_server(server);
729 ncp_disconnect(server);
730 ncp_unlock_server(server);
731out_rxbuf:
732 ncp_stop_tasks(server);
733 vfree(server->rxbuf);
734out_txbuf:
735 vfree(server->txbuf);
736out_packet:
737 vfree(server->packet);
738out_nls:
739#ifdef CONFIG_NCPFS_NLS
740 unload_nls(server->nls_io);
741 unload_nls(server->nls_vol);
742#endif
743 mutex_destroy(&server->rcv.creq_mutex);
744 mutex_destroy(&server->root_setup_lock);
745 mutex_destroy(&server->mutex);
746out_fput2:
747 if (server->info_sock)
748 sockfd_put(server->info_sock);
749out_bdi:
750 bdi_destroy(&server->bdi);
751out_fput:
752 sockfd_put(sock);
753out:
754 put_pid(data.wdog_pid);
755 sb->s_fs_info = NULL;
756 kfree(server);
757 return error;
758}
759
760static void delayed_free(struct rcu_head *p)
761{
762 struct ncp_server *server = container_of(p, struct ncp_server, rcu);
763#ifdef CONFIG_NCPFS_NLS
764
765 unload_nls(server->nls_vol);
766 unload_nls(server->nls_io);
767#endif
768 kfree(server);
769}
770
771static void ncp_put_super(struct super_block *sb)
772{
773 struct ncp_server *server = NCP_SBP(sb);
774
775 ncp_lock_server(server);
776 ncp_disconnect(server);
777 ncp_unlock_server(server);
778
779 ncp_stop_tasks(server);
780
781 mutex_destroy(&server->rcv.creq_mutex);
782 mutex_destroy(&server->root_setup_lock);
783 mutex_destroy(&server->mutex);
784
785 if (server->info_sock)
786 sockfd_put(server->info_sock);
787 sockfd_put(server->ncp_sock);
788 kill_pid(server->m.wdog_pid, SIGTERM, 1);
789 put_pid(server->m.wdog_pid);
790
791 bdi_destroy(&server->bdi);
792 kfree(server->priv.data);
793 kfree(server->auth.object_name);
794 vfree(server->rxbuf);
795 vfree(server->txbuf);
796 vfree(server->packet);
797 call_rcu(&server->rcu, delayed_free);
798}
799
800static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
801{
802 struct dentry* d;
803 struct inode* i;
804 struct ncp_inode_info* ni;
805 struct ncp_server* s;
806 struct ncp_volume_info vi;
807 struct super_block *sb = dentry->d_sb;
808 int err;
809 __u8 dh;
810
811 d = sb->s_root;
812 if (!d) {
813 goto dflt;
814 }
815 i = d_inode(d);
816 if (!i) {
817 goto dflt;
818 }
819 ni = NCP_FINFO(i);
820 if (!ni) {
821 goto dflt;
822 }
823 s = NCP_SBP(sb);
824 if (!s) {
825 goto dflt;
826 }
827 if (!s->m.mounted_vol[0]) {
828 goto dflt;
829 }
830
831 err = ncp_dirhandle_alloc(s, ni->volNumber, ni->DosDirNum, &dh);
832 if (err) {
833 goto dflt;
834 }
835 err = ncp_get_directory_info(s, dh, &vi);
836 ncp_dirhandle_free(s, dh);
837 if (err) {
838 goto dflt;
839 }
840 buf->f_type = NCP_SUPER_MAGIC;
841 buf->f_bsize = vi.sectors_per_block * 512;
842 buf->f_blocks = vi.total_blocks;
843 buf->f_bfree = vi.free_blocks;
844 buf->f_bavail = vi.free_blocks;
845 buf->f_files = vi.total_dir_entries;
846 buf->f_ffree = vi.available_dir_entries;
847 buf->f_namelen = 12;
848 return 0;
849
850
851
852
853
854
855
856dflt:;
857 buf->f_type = NCP_SUPER_MAGIC;
858 buf->f_bsize = NCP_BLOCK_SIZE;
859 buf->f_blocks = 0;
860 buf->f_bfree = 0;
861 buf->f_bavail = 0;
862 buf->f_namelen = 12;
863 return 0;
864}
865
866int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
867{
868 struct inode *inode = d_inode(dentry);
869 int result = 0;
870 __le32 info_mask;
871 struct nw_modify_dos_info info;
872 struct ncp_server *server;
873
874 result = -EIO;
875
876 server = NCP_SERVER(inode);
877 if (!server)
878 goto out;
879
880 result = -EPERM;
881 if (IS_DEADDIR(d_inode(dentry)))
882 goto out;
883
884
885 ncp_age_dentry(server, dentry);
886
887 result = inode_change_ok(inode, attr);
888 if (result < 0)
889 goto out;
890
891 result = -EPERM;
892 if ((attr->ia_valid & ATTR_UID) && !uid_eq(attr->ia_uid, server->m.uid))
893 goto out;
894
895 if ((attr->ia_valid & ATTR_GID) && !gid_eq(attr->ia_gid, server->m.gid))
896 goto out;
897
898 if (((attr->ia_valid & ATTR_MODE) &&
899 (attr->ia_mode &
900 ~(S_IFREG | S_IFDIR | S_IRWXUGO))))
901 goto out;
902
903 info_mask = 0;
904 memset(&info, 0, sizeof(info));
905
906#if 1
907 if ((attr->ia_valid & ATTR_MODE) != 0)
908 {
909 umode_t newmode = attr->ia_mode;
910
911 info_mask |= DM_ATTRIBUTES;
912
913 if (S_ISDIR(inode->i_mode)) {
914 newmode &= server->m.dir_mode;
915 } else {
916#ifdef CONFIG_NCPFS_EXTRAS
917 if (server->m.flags & NCP_MOUNT_EXTRAS) {
918
919 if (newmode & ~server->m.file_mode & S_IXUGO)
920 info.attributes |= aSHARED | aSYSTEM;
921
922 else if (newmode & ~server->m.file_mode & S_IRUGO)
923 info.attributes |= aSHARED;
924 } else
925#endif
926 newmode &= server->m.file_mode;
927 }
928 if (newmode & S_IWUGO)
929 info.attributes &= ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
930 else
931 info.attributes |= (aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
932
933#ifdef CONFIG_NCPFS_NFS_NS
934 if (ncp_is_nfs_extras(server, NCP_FINFO(inode)->volNumber)) {
935 result = ncp_modify_nfs_info(server,
936 NCP_FINFO(inode)->volNumber,
937 NCP_FINFO(inode)->dirEntNum,
938 attr->ia_mode, 0);
939 if (result != 0)
940 goto out;
941 info.attributes &= ~(aSHARED | aSYSTEM);
942 {
943
944 struct iattr tmpattr;
945
946 tmpattr.ia_valid = ATTR_MODE;
947 tmpattr.ia_mode = attr->ia_mode;
948
949 setattr_copy(inode, &tmpattr);
950 mark_inode_dirty(inode);
951 }
952 }
953#endif
954 }
955#endif
956
957
958
959 if ((attr->ia_valid & ATTR_SIZE) != 0) {
960 int written;
961
962 ncp_dbg(1, "trying to change size to %llu\n", attr->ia_size);
963
964 if ((result = ncp_make_open(inode, O_WRONLY)) < 0) {
965 result = -EACCES;
966 goto out;
967 }
968 ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle,
969 attr->ia_size, 0, "", &written);
970
971
972
973 ncp_inode_close(inode);
974 result = ncp_make_closed(inode);
975 if (result)
976 goto out;
977
978 if (attr->ia_size != i_size_read(inode)) {
979 truncate_setsize(inode, attr->ia_size);
980 mark_inode_dirty(inode);
981 }
982 }
983 if ((attr->ia_valid & ATTR_CTIME) != 0) {
984 info_mask |= (DM_CREATE_TIME | DM_CREATE_DATE);
985 ncp_date_unix2dos(attr->ia_ctime.tv_sec,
986 &info.creationTime, &info.creationDate);
987 }
988 if ((attr->ia_valid & ATTR_MTIME) != 0) {
989 info_mask |= (DM_MODIFY_TIME | DM_MODIFY_DATE);
990 ncp_date_unix2dos(attr->ia_mtime.tv_sec,
991 &info.modifyTime, &info.modifyDate);
992 }
993 if ((attr->ia_valid & ATTR_ATIME) != 0) {
994 __le16 dummy;
995 info_mask |= (DM_LAST_ACCESS_DATE);
996 ncp_date_unix2dos(attr->ia_atime.tv_sec,
997 &dummy, &info.lastAccessDate);
998 }
999 if (info_mask != 0) {
1000 result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),
1001 inode, info_mask, &info);
1002 if (result != 0) {
1003 if (info_mask == (DM_CREATE_TIME | DM_CREATE_DATE)) {
1004
1005
1006
1007
1008
1009 result = 0;
1010 } else
1011 goto out;
1012 }
1013#ifdef CONFIG_NCPFS_STRONG
1014 if ((!result) && (info_mask & DM_ATTRIBUTES))
1015 NCP_FINFO(inode)->nwattr = info.attributes;
1016#endif
1017 }
1018 if (result)
1019 goto out;
1020
1021 setattr_copy(inode, attr);
1022 mark_inode_dirty(inode);
1023
1024out:
1025 if (result > 0)
1026 result = -EACCES;
1027 return result;
1028}
1029
1030static struct dentry *ncp_mount(struct file_system_type *fs_type,
1031 int flags, const char *dev_name, void *data)
1032{
1033 return mount_nodev(fs_type, flags, data, ncp_fill_super);
1034}
1035
1036static struct file_system_type ncp_fs_type = {
1037 .owner = THIS_MODULE,
1038 .name = "ncpfs",
1039 .mount = ncp_mount,
1040 .kill_sb = kill_anon_super,
1041 .fs_flags = FS_BINARY_MOUNTDATA,
1042};
1043MODULE_ALIAS_FS("ncpfs");
1044
1045static int __init init_ncp_fs(void)
1046{
1047 int err;
1048 ncp_dbg(1, "called\n");
1049
1050 err = init_inodecache();
1051 if (err)
1052 goto out1;
1053 err = register_filesystem(&ncp_fs_type);
1054 if (err)
1055 goto out;
1056 return 0;
1057out:
1058 destroy_inodecache();
1059out1:
1060 return err;
1061}
1062
1063static void __exit exit_ncp_fs(void)
1064{
1065 ncp_dbg(1, "called\n");
1066 unregister_filesystem(&ncp_fs_type);
1067 destroy_inodecache();
1068}
1069
1070module_init(init_ncp_fs)
1071module_exit(exit_ncp_fs)
1072MODULE_LICENSE("GPL");
1073
