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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),
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 .follow_link = page_follow_link_light,
248 .put_link = page_put_link,
249 .setattr = ncp_notify_change,
250};
251#endif
252
253
254
255
256struct inode *
257ncp_iget(struct super_block *sb, struct ncp_entry_info *info)
258{
259 struct inode *inode;
260
261 if (info == NULL) {
262 pr_err("%s: info is NULL\n", __func__);
263 return NULL;
264 }
265
266 inode = new_inode(sb);
267 if (inode) {
268 atomic_set(&NCP_FINFO(inode)->opened, info->opened);
269
270 inode->i_mapping->backing_dev_info = sb->s_bdi;
271 inode->i_ino = info->ino;
272 ncp_set_attr(inode, info);
273 if (S_ISREG(inode->i_mode)) {
274 inode->i_op = &ncp_file_inode_operations;
275 inode->i_fop = &ncp_file_operations;
276 } else if (S_ISDIR(inode->i_mode)) {
277 inode->i_op = &ncp_dir_inode_operations;
278 inode->i_fop = &ncp_dir_operations;
279#ifdef CONFIG_NCPFS_NFS_NS
280 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
281 init_special_inode(inode, inode->i_mode,
282 new_decode_dev(info->i.nfs.rdev));
283#endif
284#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
285 } else if (S_ISLNK(inode->i_mode)) {
286 inode->i_op = &ncp_symlink_inode_operations;
287 inode->i_data.a_ops = &ncp_symlink_aops;
288#endif
289 } else {
290 make_bad_inode(inode);
291 }
292 insert_inode_hash(inode);
293 } else
294 pr_err("%s: iget failed!\n", __func__);
295 return inode;
296}
297
298static void
299ncp_evict_inode(struct inode *inode)
300{
301 truncate_inode_pages_final(&inode->i_data);
302 clear_inode(inode);
303
304 if (S_ISDIR(inode->i_mode)) {
305 ncp_dbg(2, "put directory %ld\n", inode->i_ino);
306 }
307
308 if (ncp_make_closed(inode) != 0) {
309
310 pr_err("%s: could not close\n", __func__);
311 }
312}
313
314static void ncp_stop_tasks(struct ncp_server *server) {
315 struct sock* sk = server->ncp_sock->sk;
316
317 lock_sock(sk);
318 sk->sk_error_report = server->error_report;
319 sk->sk_data_ready = server->data_ready;
320 sk->sk_write_space = server->write_space;
321 release_sock(sk);
322 del_timer_sync(&server->timeout_tm);
323
324 flush_work(&server->rcv.tq);
325 if (sk->sk_socket->type == SOCK_STREAM)
326 flush_work(&server->tx.tq);
327 else
328 flush_work(&server->timeout_tq);
329}
330
331static int ncp_show_options(struct seq_file *seq, struct dentry *root)
332{
333 struct ncp_server *server = NCP_SBP(root->d_sb);
334 unsigned int tmp;
335
336 if (!uid_eq(server->m.uid, GLOBAL_ROOT_UID))
337 seq_printf(seq, ",uid=%u",
338 from_kuid_munged(&init_user_ns, server->m.uid));
339 if (!gid_eq(server->m.gid, GLOBAL_ROOT_GID))
340 seq_printf(seq, ",gid=%u",
341 from_kgid_munged(&init_user_ns, server->m.gid));
342 if (!uid_eq(server->m.mounted_uid, GLOBAL_ROOT_UID))
343 seq_printf(seq, ",owner=%u",
344 from_kuid_munged(&init_user_ns, server->m.mounted_uid));
345 tmp = server->m.file_mode & S_IALLUGO;
346 if (tmp != NCP_DEFAULT_FILE_MODE)
347 seq_printf(seq, ",mode=0%o", tmp);
348 tmp = server->m.dir_mode & S_IALLUGO;
349 if (tmp != NCP_DEFAULT_DIR_MODE)
350 seq_printf(seq, ",dirmode=0%o", tmp);
351 if (server->m.time_out != NCP_DEFAULT_TIME_OUT * HZ / 100) {
352 tmp = server->m.time_out * 100 / HZ;
353 seq_printf(seq, ",timeout=%u", tmp);
354 }
355 if (server->m.retry_count != NCP_DEFAULT_RETRY_COUNT)
356 seq_printf(seq, ",retry=%u", server->m.retry_count);
357 if (server->m.flags != 0)
358 seq_printf(seq, ",flags=%lu", server->m.flags);
359 if (server->m.wdog_pid != NULL)
360 seq_printf(seq, ",wdogpid=%u", pid_vnr(server->m.wdog_pid));
361
362 return 0;
363}
364
365static const struct ncp_option ncp_opts[] = {
366 { "uid", OPT_INT, 'u' },
367 { "gid", OPT_INT, 'g' },
368 { "owner", OPT_INT, 'o' },
369 { "mode", OPT_INT, 'm' },
370 { "dirmode", OPT_INT, 'd' },
371 { "timeout", OPT_INT, 't' },
372 { "retry", OPT_INT, 'r' },
373 { "flags", OPT_INT, 'f' },
374 { "wdogpid", OPT_INT, 'w' },
375 { "ncpfd", OPT_INT, 'n' },
376 { "infofd", OPT_INT, 'i' },
377 { "version", OPT_INT, 'v' },
378 { NULL, 0, 0 } };
379
380static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) {
381 int optval;
382 char *optarg;
383 unsigned long optint;
384 int version = 0;
385 int ret;
386
387 data->flags = 0;
388 data->int_flags = 0;
389 data->mounted_uid = GLOBAL_ROOT_UID;
390 data->wdog_pid = NULL;
391 data->ncp_fd = ~0;
392 data->time_out = NCP_DEFAULT_TIME_OUT;
393 data->retry_count = NCP_DEFAULT_RETRY_COUNT;
394 data->uid = GLOBAL_ROOT_UID;
395 data->gid = GLOBAL_ROOT_GID;
396 data->file_mode = NCP_DEFAULT_FILE_MODE;
397 data->dir_mode = NCP_DEFAULT_DIR_MODE;
398 data->info_fd = -1;
399 data->mounted_vol[0] = 0;
400
401 while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
402 ret = optval;
403 if (ret < 0)
404 goto err;
405 switch (optval) {
406 case 'u':
407 data->uid = make_kuid(current_user_ns(), optint);
408 if (!uid_valid(data->uid)) {
409 ret = -EINVAL;
410 goto err;
411 }
412 break;
413 case 'g':
414 data->gid = make_kgid(current_user_ns(), optint);
415 if (!gid_valid(data->gid)) {
416 ret = -EINVAL;
417 goto err;
418 }
419 break;
420 case 'o':
421 data->mounted_uid = make_kuid(current_user_ns(), optint);
422 if (!uid_valid(data->mounted_uid)) {
423 ret = -EINVAL;
424 goto err;
425 }
426 break;
427 case 'm':
428 data->file_mode = optint;
429 break;
430 case 'd':
431 data->dir_mode = optint;
432 break;
433 case 't':
434 data->time_out = optint;
435 break;
436 case 'r':
437 data->retry_count = optint;
438 break;
439 case 'f':
440 data->flags = optint;
441 break;
442 case 'w':
443 data->wdog_pid = find_get_pid(optint);
444 break;
445 case 'n':
446 data->ncp_fd = optint;
447 break;
448 case 'i':
449 data->info_fd = optint;
450 break;
451 case 'v':
452 ret = -ECHRNG;
453 if (optint < NCP_MOUNT_VERSION_V4)
454 goto err;
455 if (optint > NCP_MOUNT_VERSION_V5)
456 goto err;
457 version = optint;
458 break;
459
460 }
461 }
462 return 0;
463err:
464 put_pid(data->wdog_pid);
465 data->wdog_pid = NULL;
466 return ret;
467}
468
469static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
470{
471 struct ncp_mount_data_kernel data;
472 struct ncp_server *server;
473 struct inode *root_inode;
474 struct socket *sock;
475 int error;
476 int default_bufsize;
477#ifdef CONFIG_NCPFS_PACKET_SIGNING
478 int options;
479#endif
480 struct ncp_entry_info finfo;
481
482 memset(&data, 0, sizeof(data));
483 server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL);
484 if (!server)
485 return -ENOMEM;
486 sb->s_fs_info = server;
487
488 error = -EFAULT;
489 if (raw_data == NULL)
490 goto out;
491 switch (*(int*)raw_data) {
492 case NCP_MOUNT_VERSION:
493 {
494 struct ncp_mount_data* md = (struct ncp_mount_data*)raw_data;
495
496 data.flags = md->flags;
497 data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE;
498 data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
499 data.wdog_pid = find_get_pid(md->wdog_pid);
500 data.ncp_fd = md->ncp_fd;
501 data.time_out = md->time_out;
502 data.retry_count = md->retry_count;
503 data.uid = make_kuid(current_user_ns(), md->uid);
504 data.gid = make_kgid(current_user_ns(), md->gid);
505 data.file_mode = md->file_mode;
506 data.dir_mode = md->dir_mode;
507 data.info_fd = -1;
508 memcpy(data.mounted_vol, md->mounted_vol,
509 NCP_VOLNAME_LEN+1);
510 }
511 break;
512 case NCP_MOUNT_VERSION_V4:
513 {
514 struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data;
515
516 data.flags = md->flags;
517 data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
518 data.wdog_pid = find_get_pid(md->wdog_pid);
519 data.ncp_fd = md->ncp_fd;
520 data.time_out = md->time_out;
521 data.retry_count = md->retry_count;
522 data.uid = make_kuid(current_user_ns(), md->uid);
523 data.gid = make_kgid(current_user_ns(), md->gid);
524 data.file_mode = md->file_mode;
525 data.dir_mode = md->dir_mode;
526 data.info_fd = -1;
527 }
528 break;
529 default:
530 error = -ECHRNG;
531 if (memcmp(raw_data, "vers", 4) == 0) {
532 error = ncp_parse_options(&data, raw_data);
533 }
534 if (error)
535 goto out;
536 break;
537 }
538 error = -EINVAL;
539 if (!uid_valid(data.mounted_uid) || !uid_valid(data.uid) ||
540 !gid_valid(data.gid))
541 goto out;
542 sock = sockfd_lookup(data.ncp_fd, &error);
543 if (!sock)
544 goto out;
545
546 if (sock->type == SOCK_STREAM)
547 default_bufsize = 0xF000;
548 else
549 default_bufsize = 1024;
550
551 sb->s_flags |= MS_NODIRATIME;
552 sb->s_maxbytes = 0xFFFFFFFFU;
553 sb->s_blocksize = 1024;
554 sb->s_blocksize_bits = 10;
555 sb->s_magic = NCP_SUPER_MAGIC;
556 sb->s_op = &ncp_sops;
557 sb->s_d_op = &ncp_dentry_operations;
558 sb->s_bdi = &server->bdi;
559
560 server = NCP_SBP(sb);
561 memset(server, 0, sizeof(*server));
562
563 error = bdi_setup_and_register(&server->bdi, "ncpfs", BDI_CAP_MAP_COPY);
564 if (error)
565 goto out_fput;
566
567 server->ncp_sock = sock;
568
569 if (data.info_fd != -1) {
570 struct socket *info_sock = sockfd_lookup(data.info_fd, &error);
571 if (!info_sock)
572 goto out_bdi;
573 server->info_sock = info_sock;
574 error = -EBADFD;
575 if (info_sock->type != SOCK_STREAM)
576 goto out_fput2;
577 }
578
579
580 mutex_init(&server->mutex);
581 server->packet = NULL;
582
583
584
585
586 mutex_init(&server->root_setup_lock);
587#ifdef CONFIG_NCPFS_PACKET_SIGNING
588
589
590#endif
591 init_rwsem(&server->auth_rwsem);
592 server->auth.auth_type = NCP_AUTH_NONE;
593
594
595
596
597
598
599 server->m = data;
600
601
602 if (server->m.time_out < 1) {
603 server->m.time_out = 10;
604 pr_info("You need to recompile your ncpfs utils..\n");
605 }
606 server->m.time_out = server->m.time_out * HZ / 100;
607 server->m.file_mode = (server->m.file_mode & S_IRWXUGO) | S_IFREG;
608 server->m.dir_mode = (server->m.dir_mode & S_IRWXUGO) | S_IFDIR;
609
610#ifdef CONFIG_NCPFS_NLS
611
612 server->nls_vol = load_nls_default();
613 server->nls_io = load_nls_default();
614#endif
615
616 atomic_set(&server->dentry_ttl, 0);
617
618 INIT_LIST_HEAD(&server->tx.requests);
619 mutex_init(&server->rcv.creq_mutex);
620 server->tx.creq = NULL;
621 server->rcv.creq = NULL;
622
623 init_timer(&server->timeout_tm);
624#undef NCP_PACKET_SIZE
625#define NCP_PACKET_SIZE 131072
626 error = -ENOMEM;
627 server->packet_size = NCP_PACKET_SIZE;
628 server->packet = vmalloc(NCP_PACKET_SIZE);
629 if (server->packet == NULL)
630 goto out_nls;
631 server->txbuf = vmalloc(NCP_PACKET_SIZE);
632 if (server->txbuf == NULL)
633 goto out_packet;
634 server->rxbuf = vmalloc(NCP_PACKET_SIZE);
635 if (server->rxbuf == NULL)
636 goto out_txbuf;
637
638 lock_sock(sock->sk);
639 server->data_ready = sock->sk->sk_data_ready;
640 server->write_space = sock->sk->sk_write_space;
641 server->error_report = sock->sk->sk_error_report;
642 sock->sk->sk_user_data = server;
643 sock->sk->sk_data_ready = ncp_tcp_data_ready;
644 sock->sk->sk_error_report = ncp_tcp_error_report;
645 if (sock->type == SOCK_STREAM) {
646 server->rcv.ptr = (unsigned char*)&server->rcv.buf;
647 server->rcv.len = 10;
648 server->rcv.state = 0;
649 INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc);
650 INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc);
651 sock->sk->sk_write_space = ncp_tcp_write_space;
652 } else {
653 INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc);
654 INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc);
655 server->timeout_tm.data = (unsigned long)server;
656 server->timeout_tm.function = ncpdgram_timeout_call;
657 }
658 release_sock(sock->sk);
659
660 ncp_lock_server(server);
661 error = ncp_connect(server);
662 ncp_unlock_server(server);
663 if (error < 0)
664 goto out_rxbuf;
665 ncp_dbg(1, "NCP_SBP(sb) = %p\n", NCP_SBP(sb));
666
667 error = -EMSGSIZE;
668#ifdef CONFIG_NCPFS_PACKET_SIGNING
669 if (ncp_negotiate_size_and_options(server, default_bufsize,
670 NCP_DEFAULT_OPTIONS, &(server->buffer_size), &options) == 0)
671 {
672 if (options != NCP_DEFAULT_OPTIONS)
673 {
674 if (ncp_negotiate_size_and_options(server,
675 default_bufsize,
676 options & 2,
677 &(server->buffer_size), &options) != 0)
678
679 {
680 goto out_disconnect;
681 }
682 }
683 ncp_lock_server(server);
684 if (options & 2)
685 server->sign_wanted = 1;
686 ncp_unlock_server(server);
687 }
688 else
689#endif
690 if (ncp_negotiate_buffersize(server, default_bufsize,
691 &(server->buffer_size)) != 0)
692 goto out_disconnect;
693 ncp_dbg(1, "bufsize = %d\n", server->buffer_size);
694
695 memset(&finfo, 0, sizeof(finfo));
696 finfo.i.attributes = aDIR;
697 finfo.i.dataStreamSize = 0;
698 finfo.i.dirEntNum = 0;
699 finfo.i.DosDirNum = 0;
700#ifdef CONFIG_NCPFS_SMALLDOS
701 finfo.i.NSCreator = NW_NS_DOS;
702#endif
703 finfo.volume = NCP_NUMBER_OF_VOLUMES;
704
705 finfo.i.creationTime = finfo.i.modifyTime
706 = cpu_to_le16(0x0000);
707 finfo.i.creationDate = finfo.i.modifyDate
708 = finfo.i.lastAccessDate
709 = cpu_to_le16(0x0C21);
710 finfo.i.nameLen = 0;
711 finfo.i.entryName[0] = '\0';
712
713 finfo.opened = 0;
714 finfo.ino = 2;
715
716 server->name_space[finfo.volume] = NW_NS_DOS;
717
718 error = -ENOMEM;
719 root_inode = ncp_iget(sb, &finfo);
720 if (!root_inode)
721 goto out_disconnect;
722 ncp_dbg(1, "root vol=%d\n", NCP_FINFO(root_inode)->volNumber);
723 sb->s_root = d_make_root(root_inode);
724 if (!sb->s_root)
725 goto out_disconnect;
726 return 0;
727
728out_disconnect:
729 ncp_lock_server(server);
730 ncp_disconnect(server);
731 ncp_unlock_server(server);
732out_rxbuf:
733 ncp_stop_tasks(server);
734 vfree(server->rxbuf);
735out_txbuf:
736 vfree(server->txbuf);
737out_packet:
738 vfree(server->packet);
739out_nls:
740#ifdef CONFIG_NCPFS_NLS
741 unload_nls(server->nls_io);
742 unload_nls(server->nls_vol);
743#endif
744 mutex_destroy(&server->rcv.creq_mutex);
745 mutex_destroy(&server->root_setup_lock);
746 mutex_destroy(&server->mutex);
747out_fput2:
748 if (server->info_sock)
749 sockfd_put(server->info_sock);
750out_bdi:
751 bdi_destroy(&server->bdi);
752out_fput:
753 sockfd_put(sock);
754out:
755 put_pid(data.wdog_pid);
756 sb->s_fs_info = NULL;
757 kfree(server);
758 return error;
759}
760
761static void delayed_free(struct rcu_head *p)
762{
763 struct ncp_server *server = container_of(p, struct ncp_server, rcu);
764#ifdef CONFIG_NCPFS_NLS
765
766 unload_nls(server->nls_vol);
767 unload_nls(server->nls_io);
768#endif
769 kfree(server);
770}
771
772static void ncp_put_super(struct super_block *sb)
773{
774 struct ncp_server *server = NCP_SBP(sb);
775
776 ncp_lock_server(server);
777 ncp_disconnect(server);
778 ncp_unlock_server(server);
779
780 ncp_stop_tasks(server);
781
782 mutex_destroy(&server->rcv.creq_mutex);
783 mutex_destroy(&server->root_setup_lock);
784 mutex_destroy(&server->mutex);
785
786 if (server->info_sock)
787 sockfd_put(server->info_sock);
788 sockfd_put(server->ncp_sock);
789 kill_pid(server->m.wdog_pid, SIGTERM, 1);
790 put_pid(server->m.wdog_pid);
791
792 bdi_destroy(&server->bdi);
793 kfree(server->priv.data);
794 kfree(server->auth.object_name);
795 vfree(server->rxbuf);
796 vfree(server->txbuf);
797 vfree(server->packet);
798 call_rcu(&server->rcu, delayed_free);
799}
800
801static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
802{
803 struct dentry* d;
804 struct inode* i;
805 struct ncp_inode_info* ni;
806 struct ncp_server* s;
807 struct ncp_volume_info vi;
808 struct super_block *sb = dentry->d_sb;
809 int err;
810 __u8 dh;
811
812 d = sb->s_root;
813 if (!d) {
814 goto dflt;
815 }
816 i = d->d_inode;
817 if (!i) {
818 goto dflt;
819 }
820 ni = NCP_FINFO(i);
821 if (!ni) {
822 goto dflt;
823 }
824 s = NCP_SBP(sb);
825 if (!s) {
826 goto dflt;
827 }
828 if (!s->m.mounted_vol[0]) {
829 goto dflt;
830 }
831
832 err = ncp_dirhandle_alloc(s, ni->volNumber, ni->DosDirNum, &dh);
833 if (err) {
834 goto dflt;
835 }
836 err = ncp_get_directory_info(s, dh, &vi);
837 ncp_dirhandle_free(s, dh);
838 if (err) {
839 goto dflt;
840 }
841 buf->f_type = NCP_SUPER_MAGIC;
842 buf->f_bsize = vi.sectors_per_block * 512;
843 buf->f_blocks = vi.total_blocks;
844 buf->f_bfree = vi.free_blocks;
845 buf->f_bavail = vi.free_blocks;
846 buf->f_files = vi.total_dir_entries;
847 buf->f_ffree = vi.available_dir_entries;
848 buf->f_namelen = 12;
849 return 0;
850
851
852
853
854
855
856
857dflt:;
858 buf->f_type = NCP_SUPER_MAGIC;
859 buf->f_bsize = NCP_BLOCK_SIZE;
860 buf->f_blocks = 0;
861 buf->f_bfree = 0;
862 buf->f_bavail = 0;
863 buf->f_namelen = 12;
864 return 0;
865}
866
867int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
868{
869 struct inode *inode = dentry->d_inode;
870 int result = 0;
871 __le32 info_mask;
872 struct nw_modify_dos_info info;
873 struct ncp_server *server;
874
875 result = -EIO;
876
877 server = NCP_SERVER(inode);
878 if (!server)
879 goto out;
880
881 result = -EPERM;
882 if (IS_DEADDIR(dentry->d_inode))
883 goto out;
884
885
886 ncp_age_dentry(server, dentry);
887
888 result = inode_change_ok(inode, attr);
889 if (result < 0)
890 goto out;
891
892 result = -EPERM;
893 if ((attr->ia_valid & ATTR_UID) && !uid_eq(attr->ia_uid, server->m.uid))
894 goto out;
895
896 if ((attr->ia_valid & ATTR_GID) && !gid_eq(attr->ia_gid, server->m.gid))
897 goto out;
898
899 if (((attr->ia_valid & ATTR_MODE) &&
900 (attr->ia_mode &
901 ~(S_IFREG | S_IFDIR | S_IRWXUGO))))
902 goto out;
903
904 info_mask = 0;
905 memset(&info, 0, sizeof(info));
906
907#if 1
908 if ((attr->ia_valid & ATTR_MODE) != 0)
909 {
910 umode_t newmode = attr->ia_mode;
911
912 info_mask |= DM_ATTRIBUTES;
913
914 if (S_ISDIR(inode->i_mode)) {
915 newmode &= server->m.dir_mode;
916 } else {
917#ifdef CONFIG_NCPFS_EXTRAS
918 if (server->m.flags & NCP_MOUNT_EXTRAS) {
919
920 if (newmode & ~server->m.file_mode & S_IXUGO)
921 info.attributes |= aSHARED | aSYSTEM;
922
923 else if (newmode & ~server->m.file_mode & S_IRUGO)
924 info.attributes |= aSHARED;
925 } else
926#endif
927 newmode &= server->m.file_mode;
928 }
929 if (newmode & S_IWUGO)
930 info.attributes &= ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
931 else
932 info.attributes |= (aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
933
934#ifdef CONFIG_NCPFS_NFS_NS
935 if (ncp_is_nfs_extras(server, NCP_FINFO(inode)->volNumber)) {
936 result = ncp_modify_nfs_info(server,
937 NCP_FINFO(inode)->volNumber,
938 NCP_FINFO(inode)->dirEntNum,
939 attr->ia_mode, 0);
940 if (result != 0)
941 goto out;
942 info.attributes &= ~(aSHARED | aSYSTEM);
943 {
944
945 struct iattr tmpattr;
946
947 tmpattr.ia_valid = ATTR_MODE;
948 tmpattr.ia_mode = attr->ia_mode;
949
950 setattr_copy(inode, &tmpattr);
951 mark_inode_dirty(inode);
952 }
953 }
954#endif
955 }
956#endif
957
958
959
960 if ((attr->ia_valid & ATTR_SIZE) != 0) {
961 int written;
962
963 ncp_dbg(1, "trying to change size to %llu\n", attr->ia_size);
964
965 if ((result = ncp_make_open(inode, O_WRONLY)) < 0) {
966 result = -EACCES;
967 goto out;
968 }
969 ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle,
970 attr->ia_size, 0, "", &written);
971
972
973
974 ncp_inode_close(inode);
975 result = ncp_make_closed(inode);
976 if (result)
977 goto out;
978
979 if (attr->ia_size != i_size_read(inode)) {
980 truncate_setsize(inode, attr->ia_size);
981 mark_inode_dirty(inode);
982 }
983 }
984 if ((attr->ia_valid & ATTR_CTIME) != 0) {
985 info_mask |= (DM_CREATE_TIME | DM_CREATE_DATE);
986 ncp_date_unix2dos(attr->ia_ctime.tv_sec,
987 &info.creationTime, &info.creationDate);
988 }
989 if ((attr->ia_valid & ATTR_MTIME) != 0) {
990 info_mask |= (DM_MODIFY_TIME | DM_MODIFY_DATE);
991 ncp_date_unix2dos(attr->ia_mtime.tv_sec,
992 &info.modifyTime, &info.modifyDate);
993 }
994 if ((attr->ia_valid & ATTR_ATIME) != 0) {
995 __le16 dummy;
996 info_mask |= (DM_LAST_ACCESS_DATE);
997 ncp_date_unix2dos(attr->ia_atime.tv_sec,
998 &dummy, &info.lastAccessDate);
999 }
1000 if (info_mask != 0) {
1001 result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),
1002 inode, info_mask, &info);
1003 if (result != 0) {
1004 if (info_mask == (DM_CREATE_TIME | DM_CREATE_DATE)) {
1005
1006
1007
1008
1009
1010 result = 0;
1011 } else
1012 goto out;
1013 }
1014#ifdef CONFIG_NCPFS_STRONG
1015 if ((!result) && (info_mask & DM_ATTRIBUTES))
1016 NCP_FINFO(inode)->nwattr = info.attributes;
1017#endif
1018 }
1019 if (result)
1020 goto out;
1021
1022 setattr_copy(inode, attr);
1023 mark_inode_dirty(inode);
1024
1025out:
1026 if (result > 0)
1027 result = -EACCES;
1028 return result;
1029}
1030
1031static struct dentry *ncp_mount(struct file_system_type *fs_type,
1032 int flags, const char *dev_name, void *data)
1033{
1034 return mount_nodev(fs_type, flags, data, ncp_fill_super);
1035}
1036
1037static struct file_system_type ncp_fs_type = {
1038 .owner = THIS_MODULE,
1039 .name = "ncpfs",
1040 .mount = ncp_mount,
1041 .kill_sb = kill_anon_super,
1042 .fs_flags = FS_BINARY_MOUNTDATA,
1043};
1044MODULE_ALIAS_FS("ncpfs");
1045
1046static int __init init_ncp_fs(void)
1047{
1048 int err;
1049 ncp_dbg(1, "called\n");
1050
1051 err = init_inodecache();
1052 if (err)
1053 goto out1;
1054 err = register_filesystem(&ncp_fs_type);
1055 if (err)
1056 goto out;
1057 return 0;
1058out:
1059 destroy_inodecache();
1060out1:
1061 return err;
1062}
1063
1064static void __exit exit_ncp_fs(void)
1065{
1066 ncp_dbg(1, "called\n");
1067 unregister_filesystem(&ncp_fs_type);
1068 destroy_inodecache();
1069}
1070
1071module_init(init_ncp_fs)
1072module_exit(exit_ncp_fs)
1073MODULE_LICENSE("GPL");
1074
