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1/*
2 * inode.c
3 *
4 * Copyright (C) 1995, 1996 by Volker Lendecke
5 * Modified for big endian by J.F. Chadima and David S. Miller
6 * Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
7 * Modified 1998 Wolfram Pienkoss for NLS
8 * Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info
9 *
10 */
11
12#include <linux/module.h>
13
14#include <asm/uaccess.h>
15#include <asm/byteorder.h>
16
17#include <linux/time.h>
18#include <linux/kernel.h>
19#include <linux/mm.h>
20#include <linux/string.h>
21#include <linux/stat.h>
22#include <linux/errno.h>
23#include <linux/file.h>
24#include <linux/fcntl.h>
25#include <linux/slab.h>
26#include <linux/vmalloc.h>
27#include <linux/init.h>
28#include <linux/vfs.h>
29#include <linux/mount.h>
30#include <linux/seq_file.h>
31#include <linux/namei.h>
32
33#include <net/sock.h>
34
35#include "ncp_fs.h"
36#include "getopt.h"
37
38#define NCP_DEFAULT_FILE_MODE 0600
39#define NCP_DEFAULT_DIR_MODE 0700
40#define NCP_DEFAULT_TIME_OUT 10
41#define NCP_DEFAULT_RETRY_COUNT 20
42
43static void ncp_evict_inode(struct inode *);
44static void ncp_put_super(struct super_block *);
45static int ncp_statfs(struct dentry *, struct kstatfs *);
46static int ncp_show_options(struct seq_file *, struct dentry *);
47
48static struct kmem_cache * ncp_inode_cachep;
49
50static struct inode *ncp_alloc_inode(struct super_block *sb)
51{
52 struct ncp_inode_info *ei;
53 ei = (struct ncp_inode_info *)kmem_cache_alloc(ncp_inode_cachep, GFP_KERNEL);
54 if (!ei)
55 return NULL;
56 return &ei->vfs_inode;
57}
58
59static void ncp_i_callback(struct rcu_head *head)
60{
61 struct inode *inode = container_of(head, struct inode, i_rcu);
62 kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode));
63}
64
65static void ncp_destroy_inode(struct inode *inode)
66{
67 call_rcu(&inode->i_rcu, ncp_i_callback);
68}
69
70static void init_once(void *foo)
71{
72 struct ncp_inode_info *ei = (struct ncp_inode_info *) foo;
73
74 mutex_init(&ei->open_mutex);
75 inode_init_once(&ei->vfs_inode);
76}
77
78static int init_inodecache(void)
79{
80 ncp_inode_cachep = kmem_cache_create("ncp_inode_cache",
81 sizeof(struct ncp_inode_info),
82 0, (SLAB_RECLAIM_ACCOUNT|
83 SLAB_MEM_SPREAD),
84 init_once);
85 if (ncp_inode_cachep == NULL)
86 return -ENOMEM;
87 return 0;
88}
89
90static void destroy_inodecache(void)
91{
92 kmem_cache_destroy(ncp_inode_cachep);
93}
94
95static int ncp_remount(struct super_block *sb, int *flags, char* data)
96{
97 *flags |= MS_NODIRATIME;
98 return 0;
99}
100
101static const struct super_operations ncp_sops =
102{
103 .alloc_inode = ncp_alloc_inode,
104 .destroy_inode = ncp_destroy_inode,
105 .drop_inode = generic_delete_inode,
106 .evict_inode = ncp_evict_inode,
107 .put_super = ncp_put_super,
108 .statfs = ncp_statfs,
109 .remount_fs = ncp_remount,
110 .show_options = ncp_show_options,
111};
112
113/*
114 * Fill in the ncpfs-specific information in the inode.
115 */
116static void ncp_update_dirent(struct inode *inode, struct ncp_entry_info *nwinfo)
117{
118 NCP_FINFO(inode)->DosDirNum = nwinfo->i.DosDirNum;
119 NCP_FINFO(inode)->dirEntNum = nwinfo->i.dirEntNum;
120 NCP_FINFO(inode)->volNumber = nwinfo->volume;
121}
122
123void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo)
124{
125 ncp_update_dirent(inode, nwinfo);
126 NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
127 NCP_FINFO(inode)->access = nwinfo->access;
128 memcpy(NCP_FINFO(inode)->file_handle, nwinfo->file_handle,
129 sizeof(nwinfo->file_handle));
130 DPRINTK("ncp_update_inode: updated %s, volnum=%d, dirent=%u\n",
131 nwinfo->i.entryName, NCP_FINFO(inode)->volNumber,
132 NCP_FINFO(inode)->dirEntNum);
133}
134
135static void ncp_update_dates(struct inode *inode, struct nw_info_struct *nwi)
136{
137 /* NFS namespace mode overrides others if it's set. */
138 DPRINTK(KERN_DEBUG "ncp_update_dates_and_mode: (%s) nfs.mode=0%o\n",
139 nwi->entryName, nwi->nfs.mode);
140 if (nwi->nfs.mode) {
141 /* XXX Security? */
142 inode->i_mode = nwi->nfs.mode;
143 }
144
145 inode->i_blocks = (i_size_read(inode) + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT;
146
147 inode->i_mtime.tv_sec = ncp_date_dos2unix(nwi->modifyTime, nwi->modifyDate);
148 inode->i_ctime.tv_sec = ncp_date_dos2unix(nwi->creationTime, nwi->creationDate);
149 inode->i_atime.tv_sec = ncp_date_dos2unix(0, nwi->lastAccessDate);
150 inode->i_atime.tv_nsec = 0;
151 inode->i_mtime.tv_nsec = 0;
152 inode->i_ctime.tv_nsec = 0;
153}
154
155static void ncp_update_attrs(struct inode *inode, struct ncp_entry_info *nwinfo)
156{
157 struct nw_info_struct *nwi = &nwinfo->i;
158 struct ncp_server *server = NCP_SERVER(inode);
159
160 if (nwi->attributes & aDIR) {
161 inode->i_mode = server->m.dir_mode;
162 /* for directories dataStreamSize seems to be some
163 Object ID ??? */
164 i_size_write(inode, NCP_BLOCK_SIZE);
165 } else {
166 u32 size;
167
168 inode->i_mode = server->m.file_mode;
169 size = le32_to_cpu(nwi->dataStreamSize);
170 i_size_write(inode, size);
171#ifdef CONFIG_NCPFS_EXTRAS
172 if ((server->m.flags & (NCP_MOUNT_EXTRAS|NCP_MOUNT_SYMLINKS))
173 && (nwi->attributes & aSHARED)) {
174 switch (nwi->attributes & (aHIDDEN|aSYSTEM)) {
175 case aHIDDEN:
176 if (server->m.flags & NCP_MOUNT_SYMLINKS) {
177 if (/* (size >= NCP_MIN_SYMLINK_SIZE)
178 && */ (size <= NCP_MAX_SYMLINK_SIZE)) {
179 inode->i_mode = (inode->i_mode & ~S_IFMT) | S_IFLNK;
180 NCP_FINFO(inode)->flags |= NCPI_KLUDGE_SYMLINK;
181 break;
182 }
183 }
184 /* FALLTHROUGH */
185 case 0:
186 if (server->m.flags & NCP_MOUNT_EXTRAS)
187 inode->i_mode |= S_IRUGO;
188 break;
189 case aSYSTEM:
190 if (server->m.flags & NCP_MOUNT_EXTRAS)
191 inode->i_mode |= (inode->i_mode >> 2) & S_IXUGO;
192 break;
193 /* case aSYSTEM|aHIDDEN: */
194 default:
195 /* reserved combination */
196 break;
197 }
198 }
199#endif
200 }
201 if (nwi->attributes & aRONLY) inode->i_mode &= ~S_IWUGO;
202}
203
204void ncp_update_inode2(struct inode* inode, struct ncp_entry_info *nwinfo)
205{
206 NCP_FINFO(inode)->flags = 0;
207 if (!atomic_read(&NCP_FINFO(inode)->opened)) {
208 NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
209 ncp_update_attrs(inode, nwinfo);
210 }
211
212 ncp_update_dates(inode, &nwinfo->i);
213 ncp_update_dirent(inode, nwinfo);
214}
215
216/*
217 * Fill in the inode based on the ncp_entry_info structure. Used only for brand new inodes.
218 */
219static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo)
220{
221 struct ncp_server *server = NCP_SERVER(inode);
222
223 NCP_FINFO(inode)->flags = 0;
224
225 ncp_update_attrs(inode, nwinfo);
226
227 DDPRINTK("ncp_read_inode: inode->i_mode = %u\n", inode->i_mode);
228
229 set_nlink(inode, 1);
230 inode->i_uid = server->m.uid;
231 inode->i_gid = server->m.gid;
232
233 ncp_update_dates(inode, &nwinfo->i);
234 ncp_update_inode(inode, nwinfo);
235}
236
237#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
238static const struct inode_operations ncp_symlink_inode_operations = {
239 .readlink = generic_readlink,
240 .follow_link = page_follow_link_light,
241 .put_link = page_put_link,
242 .setattr = ncp_notify_change,
243};
244#endif
245
246/*
247 * Get a new inode.
248 */
249struct inode *
250ncp_iget(struct super_block *sb, struct ncp_entry_info *info)
251{
252 struct inode *inode;
253
254 if (info == NULL) {
255 printk(KERN_ERR "ncp_iget: info is NULL\n");
256 return NULL;
257 }
258
259 inode = new_inode(sb);
260 if (inode) {
261 atomic_set(&NCP_FINFO(inode)->opened, info->opened);
262
263 inode->i_mapping->backing_dev_info = sb->s_bdi;
264 inode->i_ino = info->ino;
265 ncp_set_attr(inode, info);
266 if (S_ISREG(inode->i_mode)) {
267 inode->i_op = &ncp_file_inode_operations;
268 inode->i_fop = &ncp_file_operations;
269 } else if (S_ISDIR(inode->i_mode)) {
270 inode->i_op = &ncp_dir_inode_operations;
271 inode->i_fop = &ncp_dir_operations;
272#ifdef CONFIG_NCPFS_NFS_NS
273 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
274 init_special_inode(inode, inode->i_mode,
275 new_decode_dev(info->i.nfs.rdev));
276#endif
277#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
278 } else if (S_ISLNK(inode->i_mode)) {
279 inode->i_op = &ncp_symlink_inode_operations;
280 inode->i_data.a_ops = &ncp_symlink_aops;
281#endif
282 } else {
283 make_bad_inode(inode);
284 }
285 insert_inode_hash(inode);
286 } else
287 printk(KERN_ERR "ncp_iget: iget failed!\n");
288 return inode;
289}
290
291static void
292ncp_evict_inode(struct inode *inode)
293{
294 truncate_inode_pages(&inode->i_data, 0);
295 clear_inode(inode);
296
297 if (S_ISDIR(inode->i_mode)) {
298 DDPRINTK("ncp_evict_inode: put directory %ld\n", inode->i_ino);
299 }
300
301 if (ncp_make_closed(inode) != 0) {
302 /* We can't do anything but complain. */
303 printk(KERN_ERR "ncp_evict_inode: could not close\n");
304 }
305}
306
307static void ncp_stop_tasks(struct ncp_server *server) {
308 struct sock* sk = server->ncp_sock->sk;
309
310 lock_sock(sk);
311 sk->sk_error_report = server->error_report;
312 sk->sk_data_ready = server->data_ready;
313 sk->sk_write_space = server->write_space;
314 release_sock(sk);
315 del_timer_sync(&server->timeout_tm);
316
317 flush_work_sync(&server->rcv.tq);
318 if (sk->sk_socket->type == SOCK_STREAM)
319 flush_work_sync(&server->tx.tq);
320 else
321 flush_work_sync(&server->timeout_tq);
322}
323
324static int ncp_show_options(struct seq_file *seq, struct dentry *root)
325{
326 struct ncp_server *server = NCP_SBP(root->d_sb);
327 unsigned int tmp;
328
329 if (server->m.uid != 0)
330 seq_printf(seq, ",uid=%u", server->m.uid);
331 if (server->m.gid != 0)
332 seq_printf(seq, ",gid=%u", server->m.gid);
333 if (server->m.mounted_uid != 0)
334 seq_printf(seq, ",owner=%u", server->m.mounted_uid);
335 tmp = server->m.file_mode & S_IALLUGO;
336 if (tmp != NCP_DEFAULT_FILE_MODE)
337 seq_printf(seq, ",mode=0%o", tmp);
338 tmp = server->m.dir_mode & S_IALLUGO;
339 if (tmp != NCP_DEFAULT_DIR_MODE)
340 seq_printf(seq, ",dirmode=0%o", tmp);
341 if (server->m.time_out != NCP_DEFAULT_TIME_OUT * HZ / 100) {
342 tmp = server->m.time_out * 100 / HZ;
343 seq_printf(seq, ",timeout=%u", tmp);
344 }
345 if (server->m.retry_count != NCP_DEFAULT_RETRY_COUNT)
346 seq_printf(seq, ",retry=%u", server->m.retry_count);
347 if (server->m.flags != 0)
348 seq_printf(seq, ",flags=%lu", server->m.flags);
349 if (server->m.wdog_pid != NULL)
350 seq_printf(seq, ",wdogpid=%u", pid_vnr(server->m.wdog_pid));
351
352 return 0;
353}
354
355static const struct ncp_option ncp_opts[] = {
356 { "uid", OPT_INT, 'u' },
357 { "gid", OPT_INT, 'g' },
358 { "owner", OPT_INT, 'o' },
359 { "mode", OPT_INT, 'm' },
360 { "dirmode", OPT_INT, 'd' },
361 { "timeout", OPT_INT, 't' },
362 { "retry", OPT_INT, 'r' },
363 { "flags", OPT_INT, 'f' },
364 { "wdogpid", OPT_INT, 'w' },
365 { "ncpfd", OPT_INT, 'n' },
366 { "infofd", OPT_INT, 'i' }, /* v5 */
367 { "version", OPT_INT, 'v' },
368 { NULL, 0, 0 } };
369
370static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) {
371 int optval;
372 char *optarg;
373 unsigned long optint;
374 int version = 0;
375 int ret;
376
377 data->flags = 0;
378 data->int_flags = 0;
379 data->mounted_uid = 0;
380 data->wdog_pid = NULL;
381 data->ncp_fd = ~0;
382 data->time_out = NCP_DEFAULT_TIME_OUT;
383 data->retry_count = NCP_DEFAULT_RETRY_COUNT;
384 data->uid = 0;
385 data->gid = 0;
386 data->file_mode = NCP_DEFAULT_FILE_MODE;
387 data->dir_mode = NCP_DEFAULT_DIR_MODE;
388 data->info_fd = -1;
389 data->mounted_vol[0] = 0;
390
391 while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
392 ret = optval;
393 if (ret < 0)
394 goto err;
395 switch (optval) {
396 case 'u':
397 data->uid = optint;
398 break;
399 case 'g':
400 data->gid = optint;
401 break;
402 case 'o':
403 data->mounted_uid = optint;
404 break;
405 case 'm':
406 data->file_mode = optint;
407 break;
408 case 'd':
409 data->dir_mode = optint;
410 break;
411 case 't':
412 data->time_out = optint;
413 break;
414 case 'r':
415 data->retry_count = optint;
416 break;
417 case 'f':
418 data->flags = optint;
419 break;
420 case 'w':
421 data->wdog_pid = find_get_pid(optint);
422 break;
423 case 'n':
424 data->ncp_fd = optint;
425 break;
426 case 'i':
427 data->info_fd = optint;
428 break;
429 case 'v':
430 ret = -ECHRNG;
431 if (optint < NCP_MOUNT_VERSION_V4)
432 goto err;
433 if (optint > NCP_MOUNT_VERSION_V5)
434 goto err;
435 version = optint;
436 break;
437
438 }
439 }
440 return 0;
441err:
442 put_pid(data->wdog_pid);
443 data->wdog_pid = NULL;
444 return ret;
445}
446
447static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
448{
449 struct ncp_mount_data_kernel data;
450 struct ncp_server *server;
451 struct file *ncp_filp;
452 struct inode *root_inode;
453 struct inode *sock_inode;
454 struct socket *sock;
455 int error;
456 int default_bufsize;
457#ifdef CONFIG_NCPFS_PACKET_SIGNING
458 int options;
459#endif
460 struct ncp_entry_info finfo;
461
462 memset(&data, 0, sizeof(data));
463 server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL);
464 if (!server)
465 return -ENOMEM;
466 sb->s_fs_info = server;
467
468 error = -EFAULT;
469 if (raw_data == NULL)
470 goto out;
471 switch (*(int*)raw_data) {
472 case NCP_MOUNT_VERSION:
473 {
474 struct ncp_mount_data* md = (struct ncp_mount_data*)raw_data;
475
476 data.flags = md->flags;
477 data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE;
478 data.mounted_uid = md->mounted_uid;
479 data.wdog_pid = find_get_pid(md->wdog_pid);
480 data.ncp_fd = md->ncp_fd;
481 data.time_out = md->time_out;
482 data.retry_count = md->retry_count;
483 data.uid = md->uid;
484 data.gid = md->gid;
485 data.file_mode = md->file_mode;
486 data.dir_mode = md->dir_mode;
487 data.info_fd = -1;
488 memcpy(data.mounted_vol, md->mounted_vol,
489 NCP_VOLNAME_LEN+1);
490 }
491 break;
492 case NCP_MOUNT_VERSION_V4:
493 {
494 struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data;
495
496 data.flags = md->flags;
497 data.mounted_uid = 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 = md->uid;
503 data.gid = md->gid;
504 data.file_mode = md->file_mode;
505 data.dir_mode = md->dir_mode;
506 data.info_fd = -1;
507 }
508 break;
509 default:
510 error = -ECHRNG;
511 if (memcmp(raw_data, "vers", 4) == 0) {
512 error = ncp_parse_options(&data, raw_data);
513 }
514 if (error)
515 goto out;
516 break;
517 }
518 error = -EBADF;
519 ncp_filp = fget(data.ncp_fd);
520 if (!ncp_filp)
521 goto out;
522 error = -ENOTSOCK;
523 sock_inode = ncp_filp->f_path.dentry->d_inode;
524 if (!S_ISSOCK(sock_inode->i_mode))
525 goto out_fput;
526 sock = SOCKET_I(sock_inode);
527 if (!sock)
528 goto out_fput;
529
530 if (sock->type == SOCK_STREAM)
531 default_bufsize = 0xF000;
532 else
533 default_bufsize = 1024;
534
535 sb->s_flags |= MS_NODIRATIME; /* probably even noatime */
536 sb->s_maxbytes = 0xFFFFFFFFU;
537 sb->s_blocksize = 1024; /* Eh... Is this correct? */
538 sb->s_blocksize_bits = 10;
539 sb->s_magic = NCP_SUPER_MAGIC;
540 sb->s_op = &ncp_sops;
541 sb->s_d_op = &ncp_dentry_operations;
542 sb->s_bdi = &server->bdi;
543
544 server = NCP_SBP(sb);
545 memset(server, 0, sizeof(*server));
546
547 error = bdi_setup_and_register(&server->bdi, "ncpfs", BDI_CAP_MAP_COPY);
548 if (error)
549 goto out_fput;
550
551 server->ncp_filp = ncp_filp;
552 server->ncp_sock = sock;
553
554 if (data.info_fd != -1) {
555 struct socket *info_sock;
556
557 error = -EBADF;
558 server->info_filp = fget(data.info_fd);
559 if (!server->info_filp)
560 goto out_bdi;
561 error = -ENOTSOCK;
562 sock_inode = server->info_filp->f_path.dentry->d_inode;
563 if (!S_ISSOCK(sock_inode->i_mode))
564 goto out_fput2;
565 info_sock = SOCKET_I(sock_inode);
566 if (!info_sock)
567 goto out_fput2;
568 error = -EBADFD;
569 if (info_sock->type != SOCK_STREAM)
570 goto out_fput2;
571 server->info_sock = info_sock;
572 }
573
574/* server->lock = 0; */
575 mutex_init(&server->mutex);
576 server->packet = NULL;
577/* server->buffer_size = 0; */
578/* server->conn_status = 0; */
579/* server->root_dentry = NULL; */
580/* server->root_setuped = 0; */
581 mutex_init(&server->root_setup_lock);
582#ifdef CONFIG_NCPFS_PACKET_SIGNING
583/* server->sign_wanted = 0; */
584/* server->sign_active = 0; */
585#endif
586 init_rwsem(&server->auth_rwsem);
587 server->auth.auth_type = NCP_AUTH_NONE;
588/* server->auth.object_name_len = 0; */
589/* server->auth.object_name = NULL; */
590/* server->auth.object_type = 0; */
591/* server->priv.len = 0; */
592/* server->priv.data = NULL; */
593
594 server->m = data;
595 /* Although anything producing this is buggy, it happens
596 now because of PATH_MAX changes.. */
597 if (server->m.time_out < 1) {
598 server->m.time_out = 10;
599 printk(KERN_INFO "You need to recompile your ncpfs utils..\n");
600 }
601 server->m.time_out = server->m.time_out * HZ / 100;
602 server->m.file_mode = (server->m.file_mode & S_IRWXUGO) | S_IFREG;
603 server->m.dir_mode = (server->m.dir_mode & S_IRWXUGO) | S_IFDIR;
604
605#ifdef CONFIG_NCPFS_NLS
606 /* load the default NLS charsets */
607 server->nls_vol = load_nls_default();
608 server->nls_io = load_nls_default();
609#endif /* CONFIG_NCPFS_NLS */
610
611 atomic_set(&server->dentry_ttl, 0); /* no caching */
612
613 INIT_LIST_HEAD(&server->tx.requests);
614 mutex_init(&server->rcv.creq_mutex);
615 server->tx.creq = NULL;
616 server->rcv.creq = NULL;
617
618 init_timer(&server->timeout_tm);
619#undef NCP_PACKET_SIZE
620#define NCP_PACKET_SIZE 131072
621 error = -ENOMEM;
622 server->packet_size = NCP_PACKET_SIZE;
623 server->packet = vmalloc(NCP_PACKET_SIZE);
624 if (server->packet == NULL)
625 goto out_nls;
626 server->txbuf = vmalloc(NCP_PACKET_SIZE);
627 if (server->txbuf == NULL)
628 goto out_packet;
629 server->rxbuf = vmalloc(NCP_PACKET_SIZE);
630 if (server->rxbuf == NULL)
631 goto out_txbuf;
632
633 lock_sock(sock->sk);
634 server->data_ready = sock->sk->sk_data_ready;
635 server->write_space = sock->sk->sk_write_space;
636 server->error_report = sock->sk->sk_error_report;
637 sock->sk->sk_user_data = server;
638 sock->sk->sk_data_ready = ncp_tcp_data_ready;
639 sock->sk->sk_error_report = ncp_tcp_error_report;
640 if (sock->type == SOCK_STREAM) {
641 server->rcv.ptr = (unsigned char*)&server->rcv.buf;
642 server->rcv.len = 10;
643 server->rcv.state = 0;
644 INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc);
645 INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc);
646 sock->sk->sk_write_space = ncp_tcp_write_space;
647 } else {
648 INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc);
649 INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc);
650 server->timeout_tm.data = (unsigned long)server;
651 server->timeout_tm.function = ncpdgram_timeout_call;
652 }
653 release_sock(sock->sk);
654
655 ncp_lock_server(server);
656 error = ncp_connect(server);
657 ncp_unlock_server(server);
658 if (error < 0)
659 goto out_rxbuf;
660 DPRINTK("ncp_fill_super: NCP_SBP(sb) = %x\n", (int) NCP_SBP(sb));
661
662 error = -EMSGSIZE; /* -EREMOTESIDEINCOMPATIBLE */
663#ifdef CONFIG_NCPFS_PACKET_SIGNING
664 if (ncp_negotiate_size_and_options(server, default_bufsize,
665 NCP_DEFAULT_OPTIONS, &(server->buffer_size), &options) == 0)
666 {
667 if (options != NCP_DEFAULT_OPTIONS)
668 {
669 if (ncp_negotiate_size_and_options(server,
670 default_bufsize,
671 options & 2,
672 &(server->buffer_size), &options) != 0)
673
674 {
675 goto out_disconnect;
676 }
677 }
678 ncp_lock_server(server);
679 if (options & 2)
680 server->sign_wanted = 1;
681 ncp_unlock_server(server);
682 }
683 else
684#endif /* CONFIG_NCPFS_PACKET_SIGNING */
685 if (ncp_negotiate_buffersize(server, default_bufsize,
686 &(server->buffer_size)) != 0)
687 goto out_disconnect;
688 DPRINTK("ncpfs: bufsize = %d\n", server->buffer_size);
689
690 memset(&finfo, 0, sizeof(finfo));
691 finfo.i.attributes = aDIR;
692 finfo.i.dataStreamSize = 0; /* ignored */
693 finfo.i.dirEntNum = 0;
694 finfo.i.DosDirNum = 0;
695#ifdef CONFIG_NCPFS_SMALLDOS
696 finfo.i.NSCreator = NW_NS_DOS;
697#endif
698 finfo.volume = NCP_NUMBER_OF_VOLUMES;
699 /* set dates of mountpoint to Jan 1, 1986; 00:00 */
700 finfo.i.creationTime = finfo.i.modifyTime
701 = cpu_to_le16(0x0000);
702 finfo.i.creationDate = finfo.i.modifyDate
703 = finfo.i.lastAccessDate
704 = cpu_to_le16(0x0C21);
705 finfo.i.nameLen = 0;
706 finfo.i.entryName[0] = '\0';
707
708 finfo.opened = 0;
709 finfo.ino = 2; /* tradition */
710
711 server->name_space[finfo.volume] = NW_NS_DOS;
712
713 error = -ENOMEM;
714 root_inode = ncp_iget(sb, &finfo);
715 if (!root_inode)
716 goto out_disconnect;
717 DPRINTK("ncp_fill_super: root vol=%d\n", NCP_FINFO(root_inode)->volNumber);
718 sb->s_root = d_make_root(root_inode);
719 if (!sb->s_root)
720 goto out_disconnect;
721 return 0;
722
723out_disconnect:
724 ncp_lock_server(server);
725 ncp_disconnect(server);
726 ncp_unlock_server(server);
727out_rxbuf:
728 ncp_stop_tasks(server);
729 vfree(server->rxbuf);
730out_txbuf:
731 vfree(server->txbuf);
732out_packet:
733 vfree(server->packet);
734out_nls:
735#ifdef CONFIG_NCPFS_NLS
736 unload_nls(server->nls_io);
737 unload_nls(server->nls_vol);
738#endif
739 mutex_destroy(&server->rcv.creq_mutex);
740 mutex_destroy(&server->root_setup_lock);
741 mutex_destroy(&server->mutex);
742out_fput2:
743 if (server->info_filp)
744 fput(server->info_filp);
745out_bdi:
746 bdi_destroy(&server->bdi);
747out_fput:
748 /* 23/12/1998 Marcin Dalecki <dalecki@cs.net.pl>:
749 *
750 * The previously used put_filp(ncp_filp); was bogus, since
751 * it doesn't perform proper unlocking.
752 */
753 fput(ncp_filp);
754out:
755 put_pid(data.wdog_pid);
756 sb->s_fs_info = NULL;
757 kfree(server);
758 return error;
759}
760
761static void ncp_put_super(struct super_block *sb)
762{
763 struct ncp_server *server = NCP_SBP(sb);
764
765 ncp_lock_server(server);
766 ncp_disconnect(server);
767 ncp_unlock_server(server);
768
769 ncp_stop_tasks(server);
770
771#ifdef CONFIG_NCPFS_NLS
772 /* unload the NLS charsets */
773 unload_nls(server->nls_vol);
774 unload_nls(server->nls_io);
775#endif /* CONFIG_NCPFS_NLS */
776 mutex_destroy(&server->rcv.creq_mutex);
777 mutex_destroy(&server->root_setup_lock);
778 mutex_destroy(&server->mutex);
779
780 if (server->info_filp)
781 fput(server->info_filp);
782 fput(server->ncp_filp);
783 kill_pid(server->m.wdog_pid, SIGTERM, 1);
784 put_pid(server->m.wdog_pid);
785
786 bdi_destroy(&server->bdi);
787 kfree(server->priv.data);
788 kfree(server->auth.object_name);
789 vfree(server->rxbuf);
790 vfree(server->txbuf);
791 vfree(server->packet);
792 sb->s_fs_info = NULL;
793 kfree(server);
794}
795
796static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
797{
798 struct dentry* d;
799 struct inode* i;
800 struct ncp_inode_info* ni;
801 struct ncp_server* s;
802 struct ncp_volume_info vi;
803 struct super_block *sb = dentry->d_sb;
804 int err;
805 __u8 dh;
806
807 d = sb->s_root;
808 if (!d) {
809 goto dflt;
810 }
811 i = d->d_inode;
812 if (!i) {
813 goto dflt;
814 }
815 ni = NCP_FINFO(i);
816 if (!ni) {
817 goto dflt;
818 }
819 s = NCP_SBP(sb);
820 if (!s) {
821 goto dflt;
822 }
823 if (!s->m.mounted_vol[0]) {
824 goto dflt;
825 }
826
827 err = ncp_dirhandle_alloc(s, ni->volNumber, ni->DosDirNum, &dh);
828 if (err) {
829 goto dflt;
830 }
831 err = ncp_get_directory_info(s, dh, &vi);
832 ncp_dirhandle_free(s, dh);
833 if (err) {
834 goto dflt;
835 }
836 buf->f_type = NCP_SUPER_MAGIC;
837 buf->f_bsize = vi.sectors_per_block * 512;
838 buf->f_blocks = vi.total_blocks;
839 buf->f_bfree = vi.free_blocks;
840 buf->f_bavail = vi.free_blocks;
841 buf->f_files = vi.total_dir_entries;
842 buf->f_ffree = vi.available_dir_entries;
843 buf->f_namelen = 12;
844 return 0;
845
846 /* We cannot say how much disk space is left on a mounted
847 NetWare Server, because free space is distributed over
848 volumes, and the current user might have disk quotas. So
849 free space is not that simple to determine. Our decision
850 here is to err conservatively. */
851
852dflt:;
853 buf->f_type = NCP_SUPER_MAGIC;
854 buf->f_bsize = NCP_BLOCK_SIZE;
855 buf->f_blocks = 0;
856 buf->f_bfree = 0;
857 buf->f_bavail = 0;
858 buf->f_namelen = 12;
859 return 0;
860}
861
862int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
863{
864 struct inode *inode = dentry->d_inode;
865 int result = 0;
866 __le32 info_mask;
867 struct nw_modify_dos_info info;
868 struct ncp_server *server;
869
870 result = -EIO;
871
872 server = NCP_SERVER(inode);
873 if (!server) /* How this could happen? */
874 goto out;
875
876 /* ageing the dentry to force validation */
877 ncp_age_dentry(server, dentry);
878
879 result = inode_change_ok(inode, attr);
880 if (result < 0)
881 goto out;
882
883 result = -EPERM;
884 if (((attr->ia_valid & ATTR_UID) &&
885 (attr->ia_uid != server->m.uid)))
886 goto out;
887
888 if (((attr->ia_valid & ATTR_GID) &&
889 (attr->ia_gid != server->m.gid)))
890 goto out;
891
892 if (((attr->ia_valid & ATTR_MODE) &&
893 (attr->ia_mode &
894 ~(S_IFREG | S_IFDIR | S_IRWXUGO))))
895 goto out;
896
897 info_mask = 0;
898 memset(&info, 0, sizeof(info));
899
900#if 1
901 if ((attr->ia_valid & ATTR_MODE) != 0)
902 {
903 umode_t newmode = attr->ia_mode;
904
905 info_mask |= DM_ATTRIBUTES;
906
907 if (S_ISDIR(inode->i_mode)) {
908 newmode &= server->m.dir_mode;
909 } else {
910#ifdef CONFIG_NCPFS_EXTRAS
911 if (server->m.flags & NCP_MOUNT_EXTRAS) {
912 /* any non-default execute bit set */
913 if (newmode & ~server->m.file_mode & S_IXUGO)
914 info.attributes |= aSHARED | aSYSTEM;
915 /* read for group/world and not in default file_mode */
916 else if (newmode & ~server->m.file_mode & S_IRUGO)
917 info.attributes |= aSHARED;
918 } else
919#endif
920 newmode &= server->m.file_mode;
921 }
922 if (newmode & S_IWUGO)
923 info.attributes &= ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
924 else
925 info.attributes |= (aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
926
927#ifdef CONFIG_NCPFS_NFS_NS
928 if (ncp_is_nfs_extras(server, NCP_FINFO(inode)->volNumber)) {
929 result = ncp_modify_nfs_info(server,
930 NCP_FINFO(inode)->volNumber,
931 NCP_FINFO(inode)->dirEntNum,
932 attr->ia_mode, 0);
933 if (result != 0)
934 goto out;
935 info.attributes &= ~(aSHARED | aSYSTEM);
936 {
937 /* mark partial success */
938 struct iattr tmpattr;
939
940 tmpattr.ia_valid = ATTR_MODE;
941 tmpattr.ia_mode = attr->ia_mode;
942
943 setattr_copy(inode, &tmpattr);
944 mark_inode_dirty(inode);
945 }
946 }
947#endif
948 }
949#endif
950
951 /* Do SIZE before attributes, otherwise mtime together with size does not work...
952 */
953 if ((attr->ia_valid & ATTR_SIZE) != 0) {
954 int written;
955
956 DPRINTK("ncpfs: trying to change size to %ld\n",
957 attr->ia_size);
958
959 if ((result = ncp_make_open(inode, O_WRONLY)) < 0) {
960 result = -EACCES;
961 goto out;
962 }
963 ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle,
964 attr->ia_size, 0, "", &written);
965
966 /* According to ndir, the changes only take effect after
967 closing the file */
968 ncp_inode_close(inode);
969 result = ncp_make_closed(inode);
970 if (result)
971 goto out;
972
973 if (attr->ia_size != i_size_read(inode)) {
974 result = vmtruncate(inode, attr->ia_size);
975 if (result)
976 goto out;
977 mark_inode_dirty(inode);
978 }
979 }
980 if ((attr->ia_valid & ATTR_CTIME) != 0) {
981 info_mask |= (DM_CREATE_TIME | DM_CREATE_DATE);
982 ncp_date_unix2dos(attr->ia_ctime.tv_sec,
983 &info.creationTime, &info.creationDate);
984 }
985 if ((attr->ia_valid & ATTR_MTIME) != 0) {
986 info_mask |= (DM_MODIFY_TIME | DM_MODIFY_DATE);
987 ncp_date_unix2dos(attr->ia_mtime.tv_sec,
988 &info.modifyTime, &info.modifyDate);
989 }
990 if ((attr->ia_valid & ATTR_ATIME) != 0) {
991 __le16 dummy;
992 info_mask |= (DM_LAST_ACCESS_DATE);
993 ncp_date_unix2dos(attr->ia_atime.tv_sec,
994 &dummy, &info.lastAccessDate);
995 }
996 if (info_mask != 0) {
997 result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),
998 inode, info_mask, &info);
999 if (result != 0) {
1000 if (info_mask == (DM_CREATE_TIME | DM_CREATE_DATE)) {
1001 /* NetWare seems not to allow this. I
1002 do not know why. So, just tell the
1003 user everything went fine. This is
1004 a terrible hack, but I do not know
1005 how to do this correctly. */
1006 result = 0;
1007 } else
1008 goto out;
1009 }
1010#ifdef CONFIG_NCPFS_STRONG
1011 if ((!result) && (info_mask & DM_ATTRIBUTES))
1012 NCP_FINFO(inode)->nwattr = info.attributes;
1013#endif
1014 }
1015 if (result)
1016 goto out;
1017
1018 setattr_copy(inode, attr);
1019 mark_inode_dirty(inode);
1020
1021out:
1022 if (result > 0)
1023 result = -EACCES;
1024 return result;
1025}
1026
1027static struct dentry *ncp_mount(struct file_system_type *fs_type,
1028 int flags, const char *dev_name, void *data)
1029{
1030 return mount_nodev(fs_type, flags, data, ncp_fill_super);
1031}
1032
1033static struct file_system_type ncp_fs_type = {
1034 .owner = THIS_MODULE,
1035 .name = "ncpfs",
1036 .mount = ncp_mount,
1037 .kill_sb = kill_anon_super,
1038 .fs_flags = FS_BINARY_MOUNTDATA,
1039};
1040
1041static int __init init_ncp_fs(void)
1042{
1043 int err;
1044 DPRINTK("ncpfs: init_ncp_fs called\n");
1045
1046 err = init_inodecache();
1047 if (err)
1048 goto out1;
1049 err = register_filesystem(&ncp_fs_type);
1050 if (err)
1051 goto out;
1052 return 0;
1053out:
1054 destroy_inodecache();
1055out1:
1056 return err;
1057}
1058
1059static void __exit exit_ncp_fs(void)
1060{
1061 DPRINTK("ncpfs: exit_ncp_fs called\n");
1062 unregister_filesystem(&ncp_fs_type);
1063 destroy_inodecache();
1064}
1065
1066module_init(init_ncp_fs)
1067module_exit(exit_ncp_fs)
1068MODULE_LICENSE("GPL");
1/*
2 * inode.c
3 *
4 * Copyright (C) 1995, 1996 by Volker Lendecke
5 * Modified for big endian by J.F. Chadima and David S. Miller
6 * Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
7 * Modified 1998 Wolfram Pienkoss for NLS
8 * Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info
9 *
10 */
11
12#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
13
14#include <linux/module.h>
15
16#include <linux/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 * Make sure all delayed rcu free inodes are flushed before we
96 * destroy cache.
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 * Fill in the ncpfs-specific information in the inode.
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 /* NFS namespace mode overrides others if it's set. */
146 ncp_dbg(1, "(%s) nfs.mode=0%o\n", nwi->entryName, nwi->nfs.mode);
147 if (nwi->nfs.mode) {
148 /* XXX Security? */
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 /* for directories dataStreamSize seems to be some
170 Object ID ??? */
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 (/* (size >= NCP_MIN_SYMLINK_SIZE)
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 /* FALLTHROUGH */
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 /* case aSYSTEM|aHIDDEN: */
201 default:
202 /* reserved combination */
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 * Fill in the inode based on the ncp_entry_info structure. Used only for brand new inodes.
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 .get_link = page_get_link,
247 .setattr = ncp_notify_change,
248};
249#endif
250
251/*
252 * Get a new inode.
253 */
254struct inode *
255ncp_iget(struct super_block *sb, struct ncp_entry_info *info)
256{
257 struct inode *inode;
258
259 if (info == NULL) {
260 pr_err("%s: info is NULL\n", __func__);
261 return NULL;
262 }
263
264 inode = new_inode(sb);
265 if (inode) {
266 atomic_set(&NCP_FINFO(inode)->opened, info->opened);
267
268 inode->i_ino = info->ino;
269 ncp_set_attr(inode, info);
270 if (S_ISREG(inode->i_mode)) {
271 inode->i_op = &ncp_file_inode_operations;
272 inode->i_fop = &ncp_file_operations;
273 } else if (S_ISDIR(inode->i_mode)) {
274 inode->i_op = &ncp_dir_inode_operations;
275 inode->i_fop = &ncp_dir_operations;
276#ifdef CONFIG_NCPFS_NFS_NS
277 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
278 init_special_inode(inode, inode->i_mode,
279 new_decode_dev(info->i.nfs.rdev));
280#endif
281#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
282 } else if (S_ISLNK(inode->i_mode)) {
283 inode->i_op = &ncp_symlink_inode_operations;
284 inode_nohighmem(inode);
285 inode->i_data.a_ops = &ncp_symlink_aops;
286#endif
287 } else {
288 make_bad_inode(inode);
289 }
290 insert_inode_hash(inode);
291 } else
292 pr_err("%s: iget failed!\n", __func__);
293 return inode;
294}
295
296static void
297ncp_evict_inode(struct inode *inode)
298{
299 truncate_inode_pages_final(&inode->i_data);
300 clear_inode(inode);
301
302 if (S_ISDIR(inode->i_mode)) {
303 ncp_dbg(2, "put directory %ld\n", inode->i_ino);
304 }
305
306 if (ncp_make_closed(inode) != 0) {
307 /* We can't do anything but complain. */
308 pr_err("%s: could not close\n", __func__);
309 }
310}
311
312static void ncp_stop_tasks(struct ncp_server *server) {
313 struct sock* sk = server->ncp_sock->sk;
314
315 lock_sock(sk);
316 sk->sk_error_report = server->error_report;
317 sk->sk_data_ready = server->data_ready;
318 sk->sk_write_space = server->write_space;
319 release_sock(sk);
320 del_timer_sync(&server->timeout_tm);
321
322 flush_work(&server->rcv.tq);
323 if (sk->sk_socket->type == SOCK_STREAM)
324 flush_work(&server->tx.tq);
325 else
326 flush_work(&server->timeout_tq);
327}
328
329static int ncp_show_options(struct seq_file *seq, struct dentry *root)
330{
331 struct ncp_server *server = NCP_SBP(root->d_sb);
332 unsigned int tmp;
333
334 if (!uid_eq(server->m.uid, GLOBAL_ROOT_UID))
335 seq_printf(seq, ",uid=%u",
336 from_kuid_munged(&init_user_ns, server->m.uid));
337 if (!gid_eq(server->m.gid, GLOBAL_ROOT_GID))
338 seq_printf(seq, ",gid=%u",
339 from_kgid_munged(&init_user_ns, server->m.gid));
340 if (!uid_eq(server->m.mounted_uid, GLOBAL_ROOT_UID))
341 seq_printf(seq, ",owner=%u",
342 from_kuid_munged(&init_user_ns, server->m.mounted_uid));
343 tmp = server->m.file_mode & S_IALLUGO;
344 if (tmp != NCP_DEFAULT_FILE_MODE)
345 seq_printf(seq, ",mode=0%o", tmp);
346 tmp = server->m.dir_mode & S_IALLUGO;
347 if (tmp != NCP_DEFAULT_DIR_MODE)
348 seq_printf(seq, ",dirmode=0%o", tmp);
349 if (server->m.time_out != NCP_DEFAULT_TIME_OUT * HZ / 100) {
350 tmp = server->m.time_out * 100 / HZ;
351 seq_printf(seq, ",timeout=%u", tmp);
352 }
353 if (server->m.retry_count != NCP_DEFAULT_RETRY_COUNT)
354 seq_printf(seq, ",retry=%u", server->m.retry_count);
355 if (server->m.flags != 0)
356 seq_printf(seq, ",flags=%lu", server->m.flags);
357 if (server->m.wdog_pid != NULL)
358 seq_printf(seq, ",wdogpid=%u", pid_vnr(server->m.wdog_pid));
359
360 return 0;
361}
362
363static const struct ncp_option ncp_opts[] = {
364 { "uid", OPT_INT, 'u' },
365 { "gid", OPT_INT, 'g' },
366 { "owner", OPT_INT, 'o' },
367 { "mode", OPT_INT, 'm' },
368 { "dirmode", OPT_INT, 'd' },
369 { "timeout", OPT_INT, 't' },
370 { "retry", OPT_INT, 'r' },
371 { "flags", OPT_INT, 'f' },
372 { "wdogpid", OPT_INT, 'w' },
373 { "ncpfd", OPT_INT, 'n' },
374 { "infofd", OPT_INT, 'i' }, /* v5 */
375 { "version", OPT_INT, 'v' },
376 { NULL, 0, 0 } };
377
378static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) {
379 int optval;
380 char *optarg;
381 unsigned long optint;
382 int version = 0;
383 int ret;
384
385 data->flags = 0;
386 data->int_flags = 0;
387 data->mounted_uid = GLOBAL_ROOT_UID;
388 data->wdog_pid = NULL;
389 data->ncp_fd = ~0;
390 data->time_out = NCP_DEFAULT_TIME_OUT;
391 data->retry_count = NCP_DEFAULT_RETRY_COUNT;
392 data->uid = GLOBAL_ROOT_UID;
393 data->gid = GLOBAL_ROOT_GID;
394 data->file_mode = NCP_DEFAULT_FILE_MODE;
395 data->dir_mode = NCP_DEFAULT_DIR_MODE;
396 data->info_fd = -1;
397 data->mounted_vol[0] = 0;
398
399 while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
400 ret = optval;
401 if (ret < 0)
402 goto err;
403 switch (optval) {
404 case 'u':
405 data->uid = make_kuid(current_user_ns(), optint);
406 if (!uid_valid(data->uid)) {
407 ret = -EINVAL;
408 goto err;
409 }
410 break;
411 case 'g':
412 data->gid = make_kgid(current_user_ns(), optint);
413 if (!gid_valid(data->gid)) {
414 ret = -EINVAL;
415 goto err;
416 }
417 break;
418 case 'o':
419 data->mounted_uid = make_kuid(current_user_ns(), optint);
420 if (!uid_valid(data->mounted_uid)) {
421 ret = -EINVAL;
422 goto err;
423 }
424 break;
425 case 'm':
426 data->file_mode = optint;
427 break;
428 case 'd':
429 data->dir_mode = optint;
430 break;
431 case 't':
432 data->time_out = optint;
433 break;
434 case 'r':
435 data->retry_count = optint;
436 break;
437 case 'f':
438 data->flags = optint;
439 break;
440 case 'w':
441 data->wdog_pid = find_get_pid(optint);
442 break;
443 case 'n':
444 data->ncp_fd = optint;
445 break;
446 case 'i':
447 data->info_fd = optint;
448 break;
449 case 'v':
450 ret = -ECHRNG;
451 if (optint < NCP_MOUNT_VERSION_V4)
452 goto err;
453 if (optint > NCP_MOUNT_VERSION_V5)
454 goto err;
455 version = optint;
456 break;
457
458 }
459 }
460 return 0;
461err:
462 put_pid(data->wdog_pid);
463 data->wdog_pid = NULL;
464 return ret;
465}
466
467static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
468{
469 struct ncp_mount_data_kernel data;
470 struct ncp_server *server;
471 struct inode *root_inode;
472 struct socket *sock;
473 int error;
474 int default_bufsize;
475#ifdef CONFIG_NCPFS_PACKET_SIGNING
476 int options;
477#endif
478 struct ncp_entry_info finfo;
479
480 memset(&data, 0, sizeof(data));
481 server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL);
482 if (!server)
483 return -ENOMEM;
484 sb->s_fs_info = server;
485
486 error = -EFAULT;
487 if (raw_data == NULL)
488 goto out;
489 switch (*(int*)raw_data) {
490 case NCP_MOUNT_VERSION:
491 {
492 struct ncp_mount_data* md = (struct ncp_mount_data*)raw_data;
493
494 data.flags = md->flags;
495 data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE;
496 data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
497 data.wdog_pid = find_get_pid(md->wdog_pid);
498 data.ncp_fd = md->ncp_fd;
499 data.time_out = md->time_out;
500 data.retry_count = md->retry_count;
501 data.uid = make_kuid(current_user_ns(), md->uid);
502 data.gid = make_kgid(current_user_ns(), md->gid);
503 data.file_mode = md->file_mode;
504 data.dir_mode = md->dir_mode;
505 data.info_fd = -1;
506 memcpy(data.mounted_vol, md->mounted_vol,
507 NCP_VOLNAME_LEN+1);
508 }
509 break;
510 case NCP_MOUNT_VERSION_V4:
511 {
512 struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data;
513
514 data.flags = md->flags;
515 data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
516 data.wdog_pid = find_get_pid(md->wdog_pid);
517 data.ncp_fd = md->ncp_fd;
518 data.time_out = md->time_out;
519 data.retry_count = md->retry_count;
520 data.uid = make_kuid(current_user_ns(), md->uid);
521 data.gid = make_kgid(current_user_ns(), md->gid);
522 data.file_mode = md->file_mode;
523 data.dir_mode = md->dir_mode;
524 data.info_fd = -1;
525 }
526 break;
527 default:
528 error = -ECHRNG;
529 if (memcmp(raw_data, "vers", 4) == 0) {
530 error = ncp_parse_options(&data, raw_data);
531 }
532 if (error)
533 goto out;
534 break;
535 }
536 error = -EINVAL;
537 if (!uid_valid(data.mounted_uid) || !uid_valid(data.uid) ||
538 !gid_valid(data.gid))
539 goto out;
540 sock = sockfd_lookup(data.ncp_fd, &error);
541 if (!sock)
542 goto out;
543
544 if (sock->type == SOCK_STREAM)
545 default_bufsize = 0xF000;
546 else
547 default_bufsize = 1024;
548
549 sb->s_flags |= MS_NODIRATIME; /* probably even noatime */
550 sb->s_maxbytes = 0xFFFFFFFFU;
551 sb->s_blocksize = 1024; /* Eh... Is this correct? */
552 sb->s_blocksize_bits = 10;
553 sb->s_magic = NCP_SUPER_MAGIC;
554 sb->s_op = &ncp_sops;
555 sb->s_d_op = &ncp_dentry_operations;
556 sb->s_bdi = &server->bdi;
557
558 server = NCP_SBP(sb);
559 memset(server, 0, sizeof(*server));
560
561 error = bdi_setup_and_register(&server->bdi, "ncpfs");
562 if (error)
563 goto out_fput;
564
565 server->ncp_sock = sock;
566
567 if (data.info_fd != -1) {
568 struct socket *info_sock = sockfd_lookup(data.info_fd, &error);
569 if (!info_sock)
570 goto out_bdi;
571 server->info_sock = info_sock;
572 error = -EBADFD;
573 if (info_sock->type != SOCK_STREAM)
574 goto out_fput2;
575 }
576
577/* server->lock = 0; */
578 mutex_init(&server->mutex);
579 server->packet = NULL;
580/* server->buffer_size = 0; */
581/* server->conn_status = 0; */
582/* server->root_dentry = NULL; */
583/* server->root_setuped = 0; */
584 mutex_init(&server->root_setup_lock);
585#ifdef CONFIG_NCPFS_PACKET_SIGNING
586/* server->sign_wanted = 0; */
587/* server->sign_active = 0; */
588#endif
589 init_rwsem(&server->auth_rwsem);
590 server->auth.auth_type = NCP_AUTH_NONE;
591/* server->auth.object_name_len = 0; */
592/* server->auth.object_name = NULL; */
593/* server->auth.object_type = 0; */
594/* server->priv.len = 0; */
595/* server->priv.data = NULL; */
596
597 server->m = data;
598 /* Although anything producing this is buggy, it happens
599 now because of PATH_MAX changes.. */
600 if (server->m.time_out < 1) {
601 server->m.time_out = 10;
602 pr_info("You need to recompile your ncpfs utils..\n");
603 }
604 server->m.time_out = server->m.time_out * HZ / 100;
605 server->m.file_mode = (server->m.file_mode & S_IRWXUGO) | S_IFREG;
606 server->m.dir_mode = (server->m.dir_mode & S_IRWXUGO) | S_IFDIR;
607
608#ifdef CONFIG_NCPFS_NLS
609 /* load the default NLS charsets */
610 server->nls_vol = load_nls_default();
611 server->nls_io = load_nls_default();
612#endif /* CONFIG_NCPFS_NLS */
613
614 atomic_set(&server->dentry_ttl, 0); /* no caching */
615
616 INIT_LIST_HEAD(&server->tx.requests);
617 mutex_init(&server->rcv.creq_mutex);
618 server->tx.creq = NULL;
619 server->rcv.creq = NULL;
620
621 init_timer(&server->timeout_tm);
622#undef NCP_PACKET_SIZE
623#define NCP_PACKET_SIZE 131072
624 error = -ENOMEM;
625 server->packet_size = NCP_PACKET_SIZE;
626 server->packet = vmalloc(NCP_PACKET_SIZE);
627 if (server->packet == NULL)
628 goto out_nls;
629 server->txbuf = vmalloc(NCP_PACKET_SIZE);
630 if (server->txbuf == NULL)
631 goto out_packet;
632 server->rxbuf = vmalloc(NCP_PACKET_SIZE);
633 if (server->rxbuf == NULL)
634 goto out_txbuf;
635
636 lock_sock(sock->sk);
637 server->data_ready = sock->sk->sk_data_ready;
638 server->write_space = sock->sk->sk_write_space;
639 server->error_report = sock->sk->sk_error_report;
640 sock->sk->sk_user_data = server;
641 sock->sk->sk_data_ready = ncp_tcp_data_ready;
642 sock->sk->sk_error_report = ncp_tcp_error_report;
643 if (sock->type == SOCK_STREAM) {
644 server->rcv.ptr = (unsigned char*)&server->rcv.buf;
645 server->rcv.len = 10;
646 server->rcv.state = 0;
647 INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc);
648 INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc);
649 sock->sk->sk_write_space = ncp_tcp_write_space;
650 } else {
651 INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc);
652 INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc);
653 server->timeout_tm.data = (unsigned long)server;
654 server->timeout_tm.function = ncpdgram_timeout_call;
655 }
656 release_sock(sock->sk);
657
658 ncp_lock_server(server);
659 error = ncp_connect(server);
660 ncp_unlock_server(server);
661 if (error < 0)
662 goto out_rxbuf;
663 ncp_dbg(1, "NCP_SBP(sb) = %p\n", NCP_SBP(sb));
664
665 error = -EMSGSIZE; /* -EREMOTESIDEINCOMPATIBLE */
666#ifdef CONFIG_NCPFS_PACKET_SIGNING
667 if (ncp_negotiate_size_and_options(server, default_bufsize,
668 NCP_DEFAULT_OPTIONS, &(server->buffer_size), &options) == 0)
669 {
670 if (options != NCP_DEFAULT_OPTIONS)
671 {
672 if (ncp_negotiate_size_and_options(server,
673 default_bufsize,
674 options & 2,
675 &(server->buffer_size), &options) != 0)
676
677 {
678 goto out_disconnect;
679 }
680 }
681 ncp_lock_server(server);
682 if (options & 2)
683 server->sign_wanted = 1;
684 ncp_unlock_server(server);
685 }
686 else
687#endif /* CONFIG_NCPFS_PACKET_SIGNING */
688 if (ncp_negotiate_buffersize(server, default_bufsize,
689 &(server->buffer_size)) != 0)
690 goto out_disconnect;
691 ncp_dbg(1, "bufsize = %d\n", server->buffer_size);
692
693 memset(&finfo, 0, sizeof(finfo));
694 finfo.i.attributes = aDIR;
695 finfo.i.dataStreamSize = 0; /* ignored */
696 finfo.i.dirEntNum = 0;
697 finfo.i.DosDirNum = 0;
698#ifdef CONFIG_NCPFS_SMALLDOS
699 finfo.i.NSCreator = NW_NS_DOS;
700#endif
701 finfo.volume = NCP_NUMBER_OF_VOLUMES;
702 /* set dates of mountpoint to Jan 1, 1986; 00:00 */
703 finfo.i.creationTime = finfo.i.modifyTime
704 = cpu_to_le16(0x0000);
705 finfo.i.creationDate = finfo.i.modifyDate
706 = finfo.i.lastAccessDate
707 = cpu_to_le16(0x0C21);
708 finfo.i.nameLen = 0;
709 finfo.i.entryName[0] = '\0';
710
711 finfo.opened = 0;
712 finfo.ino = 2; /* tradition */
713
714 server->name_space[finfo.volume] = NW_NS_DOS;
715
716 error = -ENOMEM;
717 root_inode = ncp_iget(sb, &finfo);
718 if (!root_inode)
719 goto out_disconnect;
720 ncp_dbg(1, "root vol=%d\n", NCP_FINFO(root_inode)->volNumber);
721 sb->s_root = d_make_root(root_inode);
722 if (!sb->s_root)
723 goto out_disconnect;
724 return 0;
725
726out_disconnect:
727 ncp_lock_server(server);
728 ncp_disconnect(server);
729 ncp_unlock_server(server);
730out_rxbuf:
731 ncp_stop_tasks(server);
732 vfree(server->rxbuf);
733out_txbuf:
734 vfree(server->txbuf);
735out_packet:
736 vfree(server->packet);
737out_nls:
738#ifdef CONFIG_NCPFS_NLS
739 unload_nls(server->nls_io);
740 unload_nls(server->nls_vol);
741#endif
742 mutex_destroy(&server->rcv.creq_mutex);
743 mutex_destroy(&server->root_setup_lock);
744 mutex_destroy(&server->mutex);
745out_fput2:
746 if (server->info_sock)
747 sockfd_put(server->info_sock);
748out_bdi:
749 bdi_destroy(&server->bdi);
750out_fput:
751 sockfd_put(sock);
752out:
753 put_pid(data.wdog_pid);
754 sb->s_fs_info = NULL;
755 kfree(server);
756 return error;
757}
758
759static void delayed_free(struct rcu_head *p)
760{
761 struct ncp_server *server = container_of(p, struct ncp_server, rcu);
762#ifdef CONFIG_NCPFS_NLS
763 /* unload the NLS charsets */
764 unload_nls(server->nls_vol);
765 unload_nls(server->nls_io);
766#endif /* CONFIG_NCPFS_NLS */
767 kfree(server);
768}
769
770static void ncp_put_super(struct super_block *sb)
771{
772 struct ncp_server *server = NCP_SBP(sb);
773
774 ncp_lock_server(server);
775 ncp_disconnect(server);
776 ncp_unlock_server(server);
777
778 ncp_stop_tasks(server);
779
780 mutex_destroy(&server->rcv.creq_mutex);
781 mutex_destroy(&server->root_setup_lock);
782 mutex_destroy(&server->mutex);
783
784 if (server->info_sock)
785 sockfd_put(server->info_sock);
786 sockfd_put(server->ncp_sock);
787 kill_pid(server->m.wdog_pid, SIGTERM, 1);
788 put_pid(server->m.wdog_pid);
789
790 bdi_destroy(&server->bdi);
791 kfree(server->priv.data);
792 kfree(server->auth.object_name);
793 vfree(server->rxbuf);
794 vfree(server->txbuf);
795 vfree(server->packet);
796 call_rcu(&server->rcu, delayed_free);
797}
798
799static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
800{
801 struct dentry* d;
802 struct inode* i;
803 struct ncp_inode_info* ni;
804 struct ncp_server* s;
805 struct ncp_volume_info vi;
806 struct super_block *sb = dentry->d_sb;
807 int err;
808 __u8 dh;
809
810 d = sb->s_root;
811 if (!d) {
812 goto dflt;
813 }
814 i = d_inode(d);
815 if (!i) {
816 goto dflt;
817 }
818 ni = NCP_FINFO(i);
819 if (!ni) {
820 goto dflt;
821 }
822 s = NCP_SBP(sb);
823 if (!s) {
824 goto dflt;
825 }
826 if (!s->m.mounted_vol[0]) {
827 goto dflt;
828 }
829
830 err = ncp_dirhandle_alloc(s, ni->volNumber, ni->DosDirNum, &dh);
831 if (err) {
832 goto dflt;
833 }
834 err = ncp_get_directory_info(s, dh, &vi);
835 ncp_dirhandle_free(s, dh);
836 if (err) {
837 goto dflt;
838 }
839 buf->f_type = NCP_SUPER_MAGIC;
840 buf->f_bsize = vi.sectors_per_block * 512;
841 buf->f_blocks = vi.total_blocks;
842 buf->f_bfree = vi.free_blocks;
843 buf->f_bavail = vi.free_blocks;
844 buf->f_files = vi.total_dir_entries;
845 buf->f_ffree = vi.available_dir_entries;
846 buf->f_namelen = 12;
847 return 0;
848
849 /* We cannot say how much disk space is left on a mounted
850 NetWare Server, because free space is distributed over
851 volumes, and the current user might have disk quotas. So
852 free space is not that simple to determine. Our decision
853 here is to err conservatively. */
854
855dflt:;
856 buf->f_type = NCP_SUPER_MAGIC;
857 buf->f_bsize = NCP_BLOCK_SIZE;
858 buf->f_blocks = 0;
859 buf->f_bfree = 0;
860 buf->f_bavail = 0;
861 buf->f_namelen = 12;
862 return 0;
863}
864
865int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
866{
867 struct inode *inode = d_inode(dentry);
868 int result = 0;
869 __le32 info_mask;
870 struct nw_modify_dos_info info;
871 struct ncp_server *server;
872
873 result = -EIO;
874
875 server = NCP_SERVER(inode);
876 if (!server) /* How this could happen? */
877 goto out;
878
879 result = -EPERM;
880 if (IS_DEADDIR(d_inode(dentry)))
881 goto out;
882
883 /* ageing the dentry to force validation */
884 ncp_age_dentry(server, dentry);
885
886 result = setattr_prepare(dentry, attr);
887 if (result < 0)
888 goto out;
889
890 result = -EPERM;
891 if ((attr->ia_valid & ATTR_UID) && !uid_eq(attr->ia_uid, server->m.uid))
892 goto out;
893
894 if ((attr->ia_valid & ATTR_GID) && !gid_eq(attr->ia_gid, server->m.gid))
895 goto out;
896
897 if (((attr->ia_valid & ATTR_MODE) &&
898 (attr->ia_mode &
899 ~(S_IFREG | S_IFDIR | S_IRWXUGO))))
900 goto out;
901
902 info_mask = 0;
903 memset(&info, 0, sizeof(info));
904
905#if 1
906 if ((attr->ia_valid & ATTR_MODE) != 0)
907 {
908 umode_t newmode = attr->ia_mode;
909
910 info_mask |= DM_ATTRIBUTES;
911
912 if (S_ISDIR(inode->i_mode)) {
913 newmode &= server->m.dir_mode;
914 } else {
915#ifdef CONFIG_NCPFS_EXTRAS
916 if (server->m.flags & NCP_MOUNT_EXTRAS) {
917 /* any non-default execute bit set */
918 if (newmode & ~server->m.file_mode & S_IXUGO)
919 info.attributes |= aSHARED | aSYSTEM;
920 /* read for group/world and not in default file_mode */
921 else if (newmode & ~server->m.file_mode & S_IRUGO)
922 info.attributes |= aSHARED;
923 } else
924#endif
925 newmode &= server->m.file_mode;
926 }
927 if (newmode & S_IWUGO)
928 info.attributes &= ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
929 else
930 info.attributes |= (aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
931
932#ifdef CONFIG_NCPFS_NFS_NS
933 if (ncp_is_nfs_extras(server, NCP_FINFO(inode)->volNumber)) {
934 result = ncp_modify_nfs_info(server,
935 NCP_FINFO(inode)->volNumber,
936 NCP_FINFO(inode)->dirEntNum,
937 attr->ia_mode, 0);
938 if (result != 0)
939 goto out;
940 info.attributes &= ~(aSHARED | aSYSTEM);
941 {
942 /* mark partial success */
943 struct iattr tmpattr;
944
945 tmpattr.ia_valid = ATTR_MODE;
946 tmpattr.ia_mode = attr->ia_mode;
947
948 setattr_copy(inode, &tmpattr);
949 mark_inode_dirty(inode);
950 }
951 }
952#endif
953 }
954#endif
955
956 /* Do SIZE before attributes, otherwise mtime together with size does not work...
957 */
958 if ((attr->ia_valid & ATTR_SIZE) != 0) {
959 int written;
960
961 ncp_dbg(1, "trying to change size to %llu\n", attr->ia_size);
962
963 if ((result = ncp_make_open(inode, O_WRONLY)) < 0) {
964 result = -EACCES;
965 goto out;
966 }
967 ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle,
968 attr->ia_size, 0, "", &written);
969
970 /* According to ndir, the changes only take effect after
971 closing the file */
972 ncp_inode_close(inode);
973 result = ncp_make_closed(inode);
974 if (result)
975 goto out;
976
977 if (attr->ia_size != i_size_read(inode)) {
978 truncate_setsize(inode, attr->ia_size);
979 mark_inode_dirty(inode);
980 }
981 }
982 if ((attr->ia_valid & ATTR_CTIME) != 0) {
983 info_mask |= (DM_CREATE_TIME | DM_CREATE_DATE);
984 ncp_date_unix2dos(attr->ia_ctime.tv_sec,
985 &info.creationTime, &info.creationDate);
986 }
987 if ((attr->ia_valid & ATTR_MTIME) != 0) {
988 info_mask |= (DM_MODIFY_TIME | DM_MODIFY_DATE);
989 ncp_date_unix2dos(attr->ia_mtime.tv_sec,
990 &info.modifyTime, &info.modifyDate);
991 }
992 if ((attr->ia_valid & ATTR_ATIME) != 0) {
993 __le16 dummy;
994 info_mask |= (DM_LAST_ACCESS_DATE);
995 ncp_date_unix2dos(attr->ia_atime.tv_sec,
996 &dummy, &info.lastAccessDate);
997 }
998 if (info_mask != 0) {
999 result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),
1000 inode, info_mask, &info);
1001 if (result != 0) {
1002 if (info_mask == (DM_CREATE_TIME | DM_CREATE_DATE)) {
1003 /* NetWare seems not to allow this. I
1004 do not know why. So, just tell the
1005 user everything went fine. This is
1006 a terrible hack, but I do not know
1007 how to do this correctly. */
1008 result = 0;
1009 } else
1010 goto out;
1011 }
1012#ifdef CONFIG_NCPFS_STRONG
1013 if ((!result) && (info_mask & DM_ATTRIBUTES))
1014 NCP_FINFO(inode)->nwattr = info.attributes;
1015#endif
1016 }
1017 if (result)
1018 goto out;
1019
1020 setattr_copy(inode, attr);
1021 mark_inode_dirty(inode);
1022
1023out:
1024 if (result > 0)
1025 result = -EACCES;
1026 return result;
1027}
1028
1029static struct dentry *ncp_mount(struct file_system_type *fs_type,
1030 int flags, const char *dev_name, void *data)
1031{
1032 return mount_nodev(fs_type, flags, data, ncp_fill_super);
1033}
1034
1035static struct file_system_type ncp_fs_type = {
1036 .owner = THIS_MODULE,
1037 .name = "ncpfs",
1038 .mount = ncp_mount,
1039 .kill_sb = kill_anon_super,
1040 .fs_flags = FS_BINARY_MOUNTDATA,
1041};
1042MODULE_ALIAS_FS("ncpfs");
1043
1044static int __init init_ncp_fs(void)
1045{
1046 int err;
1047 ncp_dbg(1, "called\n");
1048
1049 err = init_inodecache();
1050 if (err)
1051 goto out1;
1052 err = register_filesystem(&ncp_fs_type);
1053 if (err)
1054 goto out;
1055 return 0;
1056out:
1057 destroy_inodecache();
1058out1:
1059 return err;
1060}
1061
1062static void __exit exit_ncp_fs(void)
1063{
1064 ncp_dbg(1, "called\n");
1065 unregister_filesystem(&ncp_fs_type);
1066 destroy_inodecache();
1067}
1068
1069module_init(init_ncp_fs)
1070module_exit(exit_ncp_fs)
1071MODULE_LICENSE("GPL");