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