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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux.git] / fs / ncpfs / inode.c
CommitLineData
1da177e4
LT		 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
b41f8b84
JP		 12#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
13
1da177e4
LT		 14#include <linux/module.h>
15
7c0f6ba6 16#include <linux/uaccess.h>
1da177e4
LT		 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>
1da177e4 30#include <linux/vfs.h>
564cd138
MS		 31#include <linux/mount.h>
32#include <linux/seq_file.h>
3f07c014 33#include <linux/sched/signal.h>
34286d66 34#include <linux/namei.h>
1da177e4 35
1da177e4
LT		 36#include <net/sock.h>
37
32c419d9 38#include "ncp_fs.h"
1da177e4
LT		 39#include "getopt.h"
40
564cd138
MS		 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
94ee8494 46static void ncp_evict_inode(struct inode *);
1da177e4 47static void ncp_put_super(struct super_block *);
726c3342 48static int ncp_statfs(struct dentry *, struct kstatfs *);
34c80b1d 49static int ncp_show_options(struct seq_file *, struct dentry *);
1da177e4 50
e18b890b 51static struct kmem_cache * ncp_inode_cachep;
1da177e4
LT		 52
53static struct inode *ncp_alloc_inode(struct super_block *sb)
54{
55 struct ncp_inode_info *ei;
e94b1766 56 ei = (struct ncp_inode_info *)kmem_cache_alloc(ncp_inode_cachep, GFP_KERNEL);
1da177e4
LT		 57 if (!ei)
58 return NULL;
59 return &ei->vfs_inode;
60}
61
fa0d7e3d 62static void ncp_i_callback(struct rcu_head *head)
1da177e4 63{
fa0d7e3d 64 struct inode *inode = container_of(head, struct inode, i_rcu);
1da177e4
LT		 65 kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode));
66}
67
fa0d7e3d
NP		 68static void ncp_destroy_inode(struct inode *inode)
69{
70 call_rcu(&inode->i_rcu, ncp_i_callback);
71}
72
51cc5068 73static void init_once(void *foo)
1da177e4
LT		 74{
75 struct ncp_inode_info *ei = (struct ncp_inode_info *) foo;
76
a35afb83
CL		 77 mutex_init(&ei->open_mutex);
78 inode_init_once(&ei->vfs_inode);
1da177e4 79}
20c2df83 80
1da177e4
LT		 81static int init_inodecache(void)
82{
83 ncp_inode_cachep = kmem_cache_create("ncp_inode_cache",
84 sizeof(struct ncp_inode_info),
fffb60f9 85 0, (SLAB_RECLAIM_ACCOUNT|
5d097056 86 SLAB_MEM_SPREAD|SLAB_ACCOUNT),
20c2df83 87 init_once);
1da177e4
LT		 88 if (ncp_inode_cachep == NULL)
89 return -ENOMEM;
90 return 0;
91}
92
93static void destroy_inodecache(void)
94{
8c0a8537
KS		 95 /*
96 * Make sure all delayed rcu free inodes are flushed before we
97 * destroy cache.
98 */
99 rcu_barrier();
1a1d92c1 100 kmem_cache_destroy(ncp_inode_cachep);
1da177e4
LT		 101}
102
103static int ncp_remount(struct super_block *sb, int *flags, char* data)
104{
02b9984d 105 sync_filesystem(sb);
1da177e4
LT		 106 *flags |= MS_NODIRATIME;
107 return 0;
108}
109
ee9b6d61 110static const struct super_operations ncp_sops =
1da177e4
LT		 111{
112 .alloc_inode = ncp_alloc_inode,
113 .destroy_inode = ncp_destroy_inode,
114 .drop_inode = generic_delete_inode,
94ee8494 115 .evict_inode = ncp_evict_inode,
1da177e4
LT		 116 .put_super = ncp_put_super,
117 .statfs = ncp_statfs,
118 .remount_fs = ncp_remount,
564cd138 119 .show_options = ncp_show_options,
1da177e4
LT		 120};
121
1da177e4
LT		 122/*
123 * Fill in the ncpfs-specific information in the inode.
124 */
125static void ncp_update_dirent(struct inode *inode, struct ncp_entry_info *nwinfo)
126{
127 NCP_FINFO(inode)->DosDirNum = nwinfo->i.DosDirNum;
128 NCP_FINFO(inode)->dirEntNum = nwinfo->i.dirEntNum;
129 NCP_FINFO(inode)->volNumber = nwinfo->volume;
130}
131
132void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo)
133{
134 ncp_update_dirent(inode, nwinfo);
135 NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
136 NCP_FINFO(inode)->access = nwinfo->access;
137 memcpy(NCP_FINFO(inode)->file_handle, nwinfo->file_handle,
138 sizeof(nwinfo->file_handle));
d3b73ca1 139 ncp_dbg(1, "updated %s, volnum=%d, dirent=%u\n",
1da177e4
LT		 140 nwinfo->i.entryName, NCP_FINFO(inode)->volNumber,
141 NCP_FINFO(inode)->dirEntNum);
142}
143
144static void ncp_update_dates(struct inode *inode, struct nw_info_struct *nwi)
145{
146 /* NFS namespace mode overrides others if it's set. */
d3b73ca1 147 ncp_dbg(1, "(%s) nfs.mode=0%o\n", nwi->entryName, nwi->nfs.mode);
1da177e4
LT		 148 if (nwi->nfs.mode) {
149 /* XXX Security? */
150 inode->i_mode = nwi->nfs.mode;
151 }
152
2e54eb96 153 inode->i_blocks = (i_size_read(inode) + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT;
1da177e4
LT		 154
155 inode->i_mtime.tv_sec = ncp_date_dos2unix(nwi->modifyTime, nwi->modifyDate);
156 inode->i_ctime.tv_sec = ncp_date_dos2unix(nwi->creationTime, nwi->creationDate);
157 inode->i_atime.tv_sec = ncp_date_dos2unix(0, nwi->lastAccessDate);
158 inode->i_atime.tv_nsec = 0;
159 inode->i_mtime.tv_nsec = 0;
160 inode->i_ctime.tv_nsec = 0;
161}
162
163static void ncp_update_attrs(struct inode *inode, struct ncp_entry_info *nwinfo)
164{
165 struct nw_info_struct *nwi = &nwinfo->i;
166 struct ncp_server *server = NCP_SERVER(inode);
167
168 if (nwi->attributes & aDIR) {
169 inode->i_mode = server->m.dir_mode;
170 /* for directories dataStreamSize seems to be some
171 Object ID ??? */
2e54eb96 172 i_size_write(inode, NCP_BLOCK_SIZE);
1da177e4 173 } else {
2e54eb96
PV		 174 u32 size;
175
1da177e4 176 inode->i_mode = server->m.file_mode;
2e54eb96
PV		 177 size = le32_to_cpu(nwi->dataStreamSize);
178 i_size_write(inode, size);
1da177e4
LT		 179#ifdef CONFIG_NCPFS_EXTRAS
180 if ((server->m.flags & (NCP_MOUNT_EXTRAS|NCP_MOUNT_SYMLINKS))
181 && (nwi->attributes & aSHARED)) {
182 switch (nwi->attributes & (aHIDDEN|aSYSTEM)) {
183 case aHIDDEN:
184 if (server->m.flags & NCP_MOUNT_SYMLINKS) {
2e54eb96
PV		 185 if (/* (size >= NCP_MIN_SYMLINK_SIZE)
186 && */ (size <= NCP_MAX_SYMLINK_SIZE)) {
1da177e4
LT		 187 inode->i_mode = (inode->i_mode & ~S_IFMT) | S_IFLNK;
188 NCP_FINFO(inode)->flags |= NCPI_KLUDGE_SYMLINK;
189 break;
190 }
191 }
192 /* FALLTHROUGH */
193 case 0:
194 if (server->m.flags & NCP_MOUNT_EXTRAS)
195 inode->i_mode |= S_IRUGO;
196 break;
197 case aSYSTEM:
198 if (server->m.flags & NCP_MOUNT_EXTRAS)
199 inode->i_mode |= (inode->i_mode >> 2) & S_IXUGO;
200 break;
201 /* case aSYSTEM|aHIDDEN: */
202 default:
203 /* reserved combination */
204 break;
205 }
206 }
207#endif
208 }
209 if (nwi->attributes & aRONLY) inode->i_mode &= ~S_IWUGO;
210}
211
212void ncp_update_inode2(struct inode* inode, struct ncp_entry_info *nwinfo)
213{
214 NCP_FINFO(inode)->flags = 0;
215 if (!atomic_read(&NCP_FINFO(inode)->opened)) {
216 NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
217 ncp_update_attrs(inode, nwinfo);
218 }
219
220 ncp_update_dates(inode, &nwinfo->i);
221 ncp_update_dirent(inode, nwinfo);
222}
223
224/*
2e54eb96 225 * Fill in the inode based on the ncp_entry_info structure. Used only for brand new inodes.
1da177e4
LT		 226 */
227static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo)
228{
229 struct ncp_server *server = NCP_SERVER(inode);
230
231 NCP_FINFO(inode)->flags = 0;
232
233 ncp_update_attrs(inode, nwinfo);
234
d3b73ca1 235 ncp_dbg(2, "inode->i_mode = %u\n", inode->i_mode);
1da177e4 236
bfe86848 237 set_nlink(inode, 1);
1da177e4
LT		 238 inode->i_uid = server->m.uid;
239 inode->i_gid = server->m.gid;
1da177e4
LT		 240
241 ncp_update_dates(inode, &nwinfo->i);
242 ncp_update_inode(inode, nwinfo);
243}
244
245#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
92e1d5be 246static const struct inode_operations ncp_symlink_inode_operations = {
6b255391 247 .get_link = page_get_link,
1da177e4
LT		 248 .setattr = ncp_notify_change,
249};
250#endif
251
252/*
253 * Get a new inode.
254 */
255struct inode *
256ncp_iget(struct super_block *sb, struct ncp_entry_info *info)
257{
258 struct inode *inode;
259
260 if (info == NULL) {
b41f8b84 261 pr_err("%s: info is NULL\n", __func__);
1da177e4
LT		 262 return NULL;
263 }
264
265 inode = new_inode(sb);
266 if (inode) {
267 atomic_set(&NCP_FINFO(inode)->opened, info->opened);
268
269 inode->i_ino = info->ino;
270 ncp_set_attr(inode, info);
271 if (S_ISREG(inode->i_mode)) {
272 inode->i_op = &ncp_file_inode_operations;
273 inode->i_fop = &ncp_file_operations;
274 } else if (S_ISDIR(inode->i_mode)) {
275 inode->i_op = &ncp_dir_inode_operations;
276 inode->i_fop = &ncp_dir_operations;
277#ifdef CONFIG_NCPFS_NFS_NS
278 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
279 init_special_inode(inode, inode->i_mode,
280 new_decode_dev(info->i.nfs.rdev));
281#endif
282#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
283 } else if (S_ISLNK(inode->i_mode)) {
284 inode->i_op = &ncp_symlink_inode_operations;
21fc61c7 285 inode_nohighmem(inode);
1da177e4
LT		 286 inode->i_data.a_ops = &ncp_symlink_aops;
287#endif
288 } else {
289 make_bad_inode(inode);
290 }
291 insert_inode_hash(inode);
292 } else
b41f8b84 293 pr_err("%s: iget failed!\n", __func__);
1da177e4
LT		 294 return inode;
295}
296
297static void
94ee8494 298ncp_evict_inode(struct inode *inode)
1da177e4 299{
91b0abe3 300 truncate_inode_pages_final(&inode->i_data);
dbd5768f 301 clear_inode(inode);
fef26658 302
1da177e4 303 if (S_ISDIR(inode->i_mode)) {
d3b73ca1 304 ncp_dbg(2, "put directory %ld\n", inode->i_ino);
1da177e4
LT		 305 }
306
307 if (ncp_make_closed(inode) != 0) {
308 /* We can't do anything but complain. */
b41f8b84 309 pr_err("%s: could not close\n", __func__);
1da177e4 310 }
1da177e4
LT		 311}
312
313static void ncp_stop_tasks(struct ncp_server *server) {
314 struct sock* sk = server->ncp_sock->sk;
2a4df5d3
PV		 315
316 lock_sock(sk);
1da177e4
LT		 317 sk->sk_error_report = server->error_report;
318 sk->sk_data_ready = server->data_ready;
319 sk->sk_write_space = server->write_space;
2a4df5d3 320 release_sock(sk);
1da177e4 321 del_timer_sync(&server->timeout_tm);
5d8e4bdd 322
43829731 323 flush_work(&server->rcv.tq);
5d8e4bdd 324 if (sk->sk_socket->type == SOCK_STREAM)
43829731 325 flush_work(&server->tx.tq);
5d8e4bdd 326 else
43829731 327 flush_work(&server->timeout_tq);
1da177e4
LT		 328}
329
34c80b1d 330static int ncp_show_options(struct seq_file *seq, struct dentry *root)
564cd138 331{
34c80b1d 332 struct ncp_server *server = NCP_SBP(root->d_sb);
564cd138
MS		 333 unsigned int tmp;
334
1ac7fd81
EB		 335 if (!uid_eq(server->m.uid, GLOBAL_ROOT_UID))
336 seq_printf(seq, ",uid=%u",
337 from_kuid_munged(&init_user_ns, server->m.uid));
338 if (!gid_eq(server->m.gid, GLOBAL_ROOT_GID))
339 seq_printf(seq, ",gid=%u",
340 from_kgid_munged(&init_user_ns, server->m.gid));
341 if (!uid_eq(server->m.mounted_uid, GLOBAL_ROOT_UID))
342 seq_printf(seq, ",owner=%u",
343 from_kuid_munged(&init_user_ns, server->m.mounted_uid));
564cd138
MS		 344 tmp = server->m.file_mode & S_IALLUGO;
345 if (tmp != NCP_DEFAULT_FILE_MODE)
346 seq_printf(seq, ",mode=0%o", tmp);
347 tmp = server->m.dir_mode & S_IALLUGO;
348 if (tmp != NCP_DEFAULT_DIR_MODE)
349 seq_printf(seq, ",dirmode=0%o", tmp);
350 if (server->m.time_out != NCP_DEFAULT_TIME_OUT * HZ / 100) {
351 tmp = server->m.time_out * 100 / HZ;
352 seq_printf(seq, ",timeout=%u", tmp);
353 }
354 if (server->m.retry_count != NCP_DEFAULT_RETRY_COUNT)
355 seq_printf(seq, ",retry=%u", server->m.retry_count);
356 if (server->m.flags != 0)
357 seq_printf(seq, ",flags=%lu", server->m.flags);
358 if (server->m.wdog_pid != NULL)
359 seq_printf(seq, ",wdogpid=%u", pid_vnr(server->m.wdog_pid));
360
361 return 0;
362}
363
1da177e4
LT		 364static const struct ncp_option ncp_opts[] = {
365 { "uid", OPT_INT, 'u' },
366 { "gid", OPT_INT, 'g' },
367 { "owner", OPT_INT, 'o' },
368 { "mode", OPT_INT, 'm' },
369 { "dirmode", OPT_INT, 'd' },
370 { "timeout", OPT_INT, 't' },
371 { "retry", OPT_INT, 'r' },
372 { "flags", OPT_INT, 'f' },
373 { "wdogpid", OPT_INT, 'w' },
374 { "ncpfd", OPT_INT, 'n' },
375 { "infofd", OPT_INT, 'i' }, /* v5 */
376 { "version", OPT_INT, 'v' },
377 { NULL, 0, 0 } };
378
379static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) {
380 int optval;
381 char *optarg;
382 unsigned long optint;
383 int version = 0;
1de24126 384 int ret;
1da177e4
LT		 385
386 data->flags = 0;
387 data->int_flags = 0;
1ac7fd81 388 data->mounted_uid = GLOBAL_ROOT_UID;
2154227a 389 data->wdog_pid = NULL;
1da177e4 390 data->ncp_fd = ~0;
564cd138
MS		 391 data->time_out = NCP_DEFAULT_TIME_OUT;
392 data->retry_count = NCP_DEFAULT_RETRY_COUNT;
1ac7fd81
EB		 393 data->uid = GLOBAL_ROOT_UID;
394 data->gid = GLOBAL_ROOT_GID;
564cd138
MS		 395 data->file_mode = NCP_DEFAULT_FILE_MODE;
396 data->dir_mode = NCP_DEFAULT_DIR_MODE;
1da177e4
LT		 397 data->info_fd = -1;
398 data->mounted_vol[0] = 0;
399
400 while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
1de24126
EB		 401 ret = optval;
402 if (ret < 0)
403 goto err;
1da177e4
LT		 404 switch (optval) {
405 case 'u':
1ac7fd81 406 data->uid = make_kuid(current_user_ns(), optint);
4fbeb19d
WY		 407 if (!uid_valid(data->uid)) {
408 ret = -EINVAL;
1ac7fd81 409 goto err;
4fbeb19d 410 }
1da177e4
LT		 411 break;
412 case 'g':
1ac7fd81 413 data->gid = make_kgid(current_user_ns(), optint);
4fbeb19d
WY		 414 if (!gid_valid(data->gid)) {
415 ret = -EINVAL;
1ac7fd81 416 goto err;
4fbeb19d 417 }
1da177e4
LT		 418 break;
419 case 'o':
1ac7fd81 420 data->mounted_uid = make_kuid(current_user_ns(), optint);
4fbeb19d
WY		 421 if (!uid_valid(data->mounted_uid)) {
422 ret = -EINVAL;
1ac7fd81 423 goto err;
4fbeb19d 424 }
1da177e4
LT		 425 break;
426 case 'm':
427 data->file_mode = optint;
428 break;
429 case 'd':
430 data->dir_mode = optint;
431 break;
432 case 't':
433 data->time_out = optint;
434 break;
435 case 'r':
436 data->retry_count = optint;
437 break;
438 case 'f':
439 data->flags = optint;
440 break;
441 case 'w':
2154227a 442 data->wdog_pid = find_get_pid(optint);
1da177e4
LT		 443 break;
444 case 'n':
445 data->ncp_fd = optint;
446 break;
447 case 'i':
448 data->info_fd = optint;
449 break;
450 case 'v':
1de24126
EB		 451 ret = -ECHRNG;
452 if (optint < NCP_MOUNT_VERSION_V4)
453 goto err;
454 if (optint > NCP_MOUNT_VERSION_V5)
455 goto err;
1da177e4
LT		 456 version = optint;
457 break;
458
459 }
460 }
461 return 0;
1de24126
EB		 462err:
463 put_pid(data->wdog_pid);
464 data->wdog_pid = NULL;
465 return ret;
1da177e4
LT		 466}
467
468static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
469{
470 struct ncp_mount_data_kernel data;
471 struct ncp_server *server;
1da177e4 472 struct inode *root_inode;
1da177e4
LT		 473 struct socket *sock;
474 int error;
475 int default_bufsize;
476#ifdef CONFIG_NCPFS_PACKET_SIGNING
477 int options;
478#endif
479 struct ncp_entry_info finfo;
480
2a5cac17 481 memset(&data, 0, sizeof(data));
f8314dc6 482 server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL);
1da177e4
LT		 483 if (!server)
484 return -ENOMEM;
485 sb->s_fs_info = server;
1da177e4
LT		 486
487 error = -EFAULT;
488 if (raw_data == NULL)
489 goto out;
490 switch (*(int*)raw_data) {
491 case NCP_MOUNT_VERSION:
492 {
493 struct ncp_mount_data* md = (struct ncp_mount_data*)raw_data;
494
495 data.flags = md->flags;
496 data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE;
1ac7fd81 497 data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
2154227a 498 data.wdog_pid = find_get_pid(md->wdog_pid);
1da177e4
LT		 499 data.ncp_fd = md->ncp_fd;
500 data.time_out = md->time_out;
501 data.retry_count = md->retry_count;
1ac7fd81
EB		 502 data.uid = make_kuid(current_user_ns(), md->uid);
503 data.gid = make_kgid(current_user_ns(), md->gid);
1da177e4
LT		 504 data.file_mode = md->file_mode;
505 data.dir_mode = md->dir_mode;
506 data.info_fd = -1;
507 memcpy(data.mounted_vol, md->mounted_vol,
508 NCP_VOLNAME_LEN+1);
509 }
510 break;
511 case NCP_MOUNT_VERSION_V4:
512 {
513 struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data;
514
515 data.flags = md->flags;
1ac7fd81 516 data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid);
2154227a 517 data.wdog_pid = find_get_pid(md->wdog_pid);
1da177e4
LT		 518 data.ncp_fd = md->ncp_fd;
519 data.time_out = md->time_out;
520 data.retry_count = md->retry_count;
1ac7fd81
EB		 521 data.uid = make_kuid(current_user_ns(), md->uid);
522 data.gid = make_kgid(current_user_ns(), md->gid);
1da177e4
LT		 523 data.file_mode = md->file_mode;
524 data.dir_mode = md->dir_mode;
525 data.info_fd = -1;
1da177e4
LT		 526 }
527 break;
528 default:
529 error = -ECHRNG;
530 if (memcmp(raw_data, "vers", 4) == 0) {
531 error = ncp_parse_options(&data, raw_data);
532 }
533 if (error)
534 goto out;
535 break;
536 }
1ac7fd81
EB		 537 error = -EINVAL;
538 if (!uid_valid(data.mounted_uid) || !uid_valid(data.uid) ||
539 !gid_valid(data.gid))
540 goto out;
44ba8406 541 sock = sockfd_lookup(data.ncp_fd, &error);
1da177e4 542 if (!sock)
44ba8406
AV		 543 goto out;
544
1da177e4
LT		 545 if (sock->type == SOCK_STREAM)
546 default_bufsize = 0xF000;
547 else
548 default_bufsize = 1024;
549
550 sb->s_flags |= MS_NODIRATIME; /* probably even noatime */
551 sb->s_maxbytes = 0xFFFFFFFFU;
552 sb->s_blocksize = 1024; /* Eh... Is this correct? */
553 sb->s_blocksize_bits = 10;
554 sb->s_magic = NCP_SUPER_MAGIC;
555 sb->s_op = &ncp_sops;
0378c405 556 sb->s_d_op = &ncp_dentry_operations;
1da177e4
LT		 557
558 server = NCP_SBP(sb);
559 memset(server, 0, sizeof(*server));
560
a0349ec0 561 error = super_setup_bdi(sb);
f1970c73 562 if (error)
759c361e 563 goto out_fput;
f1970c73 564
1da177e4
LT		 565 server->ncp_sock = sock;
566
567 if (data.info_fd != -1) {
44ba8406 568 struct socket *info_sock = sockfd_lookup(data.info_fd, &error);
1da177e4 569 if (!info_sock)
a0349ec0 570 goto out_fput;
44ba8406 571 server->info_sock = info_sock;
1da177e4
LT		 572 error = -EBADFD;
573 if (info_sock->type != SOCK_STREAM)
574 goto out_fput2;
1da177e4
LT		 575 }
576
577/* server->lock = 0; */
8e3f9045 578 mutex_init(&server->mutex);
1da177e4
LT		 579 server->packet = NULL;
580/* server->buffer_size = 0; */
581/* server->conn_status = 0; */
582/* server->root_dentry = NULL; */
583/* server->root_setuped = 0; */
2e54eb96 584 mutex_init(&server->root_setup_lock);
1da177e4
LT		 585#ifdef CONFIG_NCPFS_PACKET_SIGNING
586/* server->sign_wanted = 0; */
587/* server->sign_active = 0; */
588#endif
2e54eb96 589 init_rwsem(&server->auth_rwsem);
1da177e4
LT		 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;
25985edc 598 /* Although anything producing this is buggy, it happens
1da177e4
LT		 599 now because of PATH_MAX changes.. */
600 if (server->m.time_out < 1) {
601 server->m.time_out = 10;
b41f8b84 602 pr_info("You need to recompile your ncpfs utils..\n");
1da177e4
LT		 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
2e54eb96 614 atomic_set(&server->dentry_ttl, 0); /* no caching */
1da177e4
LT		 615
616 INIT_LIST_HEAD(&server->tx.requests);
8e3f9045 617 mutex_init(&server->rcv.creq_mutex);
1da177e4
LT		 618 server->tx.creq = NULL;
619 server->rcv.creq = NULL;
1da177e4
LT		 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;
c5f93cf1
PO		 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;
1da177e4 635
2a4df5d3
PV		 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;
1da177e4
LT		 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;
c4028958
DH		 647 INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc);
648 INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc);
1da177e4
LT		 649 sock->sk->sk_write_space = ncp_tcp_write_space;
650 } else {
c4028958
DH		 651 INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc);
652 INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc);
1da177e4
LT		 653 server->timeout_tm.data = (unsigned long)server;
654 server->timeout_tm.function = ncpdgram_timeout_call;
655 }
2a4df5d3 656 release_sock(sock->sk);
1da177e4
LT		 657
658 ncp_lock_server(server);
659 error = ncp_connect(server);
660 ncp_unlock_server(server);
661 if (error < 0)
c5f93cf1 662 goto out_rxbuf;
15a03ac6 663 ncp_dbg(1, "NCP_SBP(sb) = %p\n", NCP_SBP(sb));
1da177e4
LT		 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 }
2e54eb96 681 ncp_lock_server(server);
1da177e4
LT		 682 if (options & 2)
683 server->sign_wanted = 1;
2e54eb96 684 ncp_unlock_server(server);
1da177e4
LT		 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;
d3b73ca1 691 ncp_dbg(1, "bufsize = %d\n", server->buffer_size);
1da177e4
LT		 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;
d3b73ca1 720 ncp_dbg(1, "root vol=%d\n", NCP_FINFO(root_inode)->volNumber);
48fde701 721 sb->s_root = d_make_root(root_inode);
1da177e4 722 if (!sb->s_root)
48fde701 723 goto out_disconnect;
1da177e4
LT		 724 return 0;
725
1da177e4
LT		 726out_disconnect:
727 ncp_lock_server(server);
728 ncp_disconnect(server);
729 ncp_unlock_server(server);
c5f93cf1 730out_rxbuf:
1da177e4 731 ncp_stop_tasks(server);
c5f93cf1
PO		 732 vfree(server->rxbuf);
733out_txbuf:
734 vfree(server->txbuf);
735out_packet:
1da177e4
LT		 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
2e54eb96
PV		 742 mutex_destroy(&server->rcv.creq_mutex);
743 mutex_destroy(&server->root_setup_lock);
744 mutex_destroy(&server->mutex);
1da177e4 745out_fput2:
44ba8406
AV		 746 if (server->info_sock)
747 sockfd_put(server->info_sock);
759c361e 748out_fput:
44ba8406 749 sockfd_put(sock);
1da177e4 750out:
1de24126 751 put_pid(data.wdog_pid);
1da177e4
LT		 752 sb->s_fs_info = NULL;
753 kfree(server);
754 return error;
755}
756
1dcddd4a
AV		 757static void delayed_free(struct rcu_head *p)
758{
759 struct ncp_server *server = container_of(p, struct ncp_server, rcu);
760#ifdef CONFIG_NCPFS_NLS
761 /* unload the NLS charsets */
762 unload_nls(server->nls_vol);
763 unload_nls(server->nls_io);
764#endif /* CONFIG_NCPFS_NLS */
765 kfree(server);
766}
767
1da177e4
LT		 768static void ncp_put_super(struct super_block *sb)
769{
770 struct ncp_server *server = NCP_SBP(sb);
771
772 ncp_lock_server(server);
773 ncp_disconnect(server);
774 ncp_unlock_server(server);
775
776 ncp_stop_tasks(server);
777
2e54eb96
PV		 778 mutex_destroy(&server->rcv.creq_mutex);
779 mutex_destroy(&server->root_setup_lock);
780 mutex_destroy(&server->mutex);
1da177e4 781
44ba8406
AV		 782 if (server->info_sock)
783 sockfd_put(server->info_sock);
784 sockfd_put(server->ncp_sock);
2154227a
EB		 785 kill_pid(server->m.wdog_pid, SIGTERM, 1);
786 put_pid(server->m.wdog_pid);
1da177e4 787
44db77f3
PE		 788 kfree(server->priv.data);
789 kfree(server->auth.object_name);
c5f93cf1
PO		 790 vfree(server->rxbuf);
791 vfree(server->txbuf);
1da177e4 792 vfree(server->packet);
1dcddd4a 793 call_rcu(&server->rcu, delayed_free);
1da177e4
LT		 794}
795
726c3342 796static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
1da177e4
LT		 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;
726c3342 803 struct super_block *sb = dentry->d_sb;
1da177e4
LT		 804 int err;
805 __u8 dh;
806
807 d = sb->s_root;
808 if (!d) {
809 goto dflt;
810 }
2b0143b5 811 i = d_inode(d);
1da177e4
LT		 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{
2b0143b5 864 struct inode *inode = d_inode(dentry);
1da177e4
LT		 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
1da177e4 872 server = NCP_SERVER(inode);
2e54eb96 873 if (!server) /* How this could happen? */
1da177e4
LT		 874 goto out;
875
338b2f57 876 result = -EPERM;
2b0143b5 877 if (IS_DEADDIR(d_inode(dentry)))
338b2f57
AV		 878 goto out;
879
1da177e4
LT		 880 /* ageing the dentry to force validation */
881 ncp_age_dentry(server, dentry);
882
31051c85 883 result = setattr_prepare(dentry, attr);
1da177e4
LT		 884 if (result < 0)
885 goto out;
886
887 result = -EPERM;
1ac7fd81 888 if ((attr->ia_valid & ATTR_UID) && !uid_eq(attr->ia_uid, server->m.uid))
1da177e4
LT		 889 goto out;
890
1ac7fd81 891 if ((attr->ia_valid & ATTR_GID) && !gid_eq(attr->ia_gid, server->m.gid))
1da177e4
LT		 892 goto out;
893
894 if (((attr->ia_valid & ATTR_MODE) &&
895 (attr->ia_mode &
896 ~(S_IFREG | S_IFDIR | S_IRWXUGO))))
897 goto out;
898
899 info_mask = 0;
900 memset(&info, 0, sizeof(info));
901
902#if 1
903 if ((attr->ia_valid & ATTR_MODE) != 0)
904 {
905 umode_t newmode = attr->ia_mode;
906
907 info_mask |= DM_ATTRIBUTES;
908
909 if (S_ISDIR(inode->i_mode)) {
910 newmode &= server->m.dir_mode;
911 } else {
912#ifdef CONFIG_NCPFS_EXTRAS
913 if (server->m.flags & NCP_MOUNT_EXTRAS) {
914 /* any non-default execute bit set */
915 if (newmode & ~server->m.file_mode & S_IXUGO)
916 info.attributes |= aSHARED | aSYSTEM;
917 /* read for group/world and not in default file_mode */
918 else if (newmode & ~server->m.file_mode & S_IRUGO)
919 info.attributes |= aSHARED;
920 } else
921#endif
922 newmode &= server->m.file_mode;
923 }
924 if (newmode & S_IWUGO)
925 info.attributes &= ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
926 else
927 info.attributes |= (aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
928
929#ifdef CONFIG_NCPFS_NFS_NS
930 if (ncp_is_nfs_extras(server, NCP_FINFO(inode)->volNumber)) {
931 result = ncp_modify_nfs_info(server,
932 NCP_FINFO(inode)->volNumber,
933 NCP_FINFO(inode)->dirEntNum,
934 attr->ia_mode, 0);
935 if (result != 0)
936 goto out;
937 info.attributes &= ~(aSHARED | aSYSTEM);
938 {
939 /* mark partial success */
940 struct iattr tmpattr;
941
942 tmpattr.ia_valid = ATTR_MODE;
943 tmpattr.ia_mode = attr->ia_mode;
944
1025774c
CH		 945 setattr_copy(inode, &tmpattr);
946 mark_inode_dirty(inode);
1da177e4
LT		 947 }
948 }
949#endif
950 }
951#endif
952
953 /* Do SIZE before attributes, otherwise mtime together with size does not work...
954 */
955 if ((attr->ia_valid & ATTR_SIZE) != 0) {
956 int written;
957
15a03ac6 958 ncp_dbg(1, "trying to change size to %llu\n", attr->ia_size);
1da177e4
LT		 959
960 if ((result = ncp_make_open(inode, O_WRONLY)) < 0) {
961 result = -EACCES;
962 goto out;
963 }
964 ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle,
965 attr->ia_size, 0, "", &written);
966
967 /* According to ndir, the changes only take effect after
968 closing the file */
969 ncp_inode_close(inode);
970 result = ncp_make_closed(inode);
971 if (result)
972 goto out;
1025774c
CH		 973
974 if (attr->ia_size != i_size_read(inode)) {
3e7a8069 975 truncate_setsize(inode, attr->ia_size);
1025774c 976 mark_inode_dirty(inode);
1da177e4
LT		 977 }
978 }
979 if ((attr->ia_valid & ATTR_CTIME) != 0) {
980 info_mask |= (DM_CREATE_TIME | DM_CREATE_DATE);
981 ncp_date_unix2dos(attr->ia_ctime.tv_sec,
982 &info.creationTime, &info.creationDate);
983 }
984 if ((attr->ia_valid & ATTR_MTIME) != 0) {
985 info_mask |= (DM_MODIFY_TIME | DM_MODIFY_DATE);
986 ncp_date_unix2dos(attr->ia_mtime.tv_sec,
987 &info.modifyTime, &info.modifyDate);
988 }
989 if ((attr->ia_valid & ATTR_ATIME) != 0) {
990 __le16 dummy;
991 info_mask |= (DM_LAST_ACCESS_DATE);
992 ncp_date_unix2dos(attr->ia_atime.tv_sec,
993 &dummy, &info.lastAccessDate);
994 }
995 if (info_mask != 0) {
996 result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),
997 inode, info_mask, &info);
998 if (result != 0) {
1da177e4
LT		 999 if (info_mask == (DM_CREATE_TIME | DM_CREATE_DATE)) {
1000 /* NetWare seems not to allow this. I
1001 do not know why. So, just tell the
1002 user everything went fine. This is
1003 a terrible hack, but I do not know
1004 how to do this correctly. */
1005 result = 0;
1006 } else
1007 goto out;
1008 }
1009#ifdef CONFIG_NCPFS_STRONG
1010 if ((!result) && (info_mask & DM_ATTRIBUTES))
1011 NCP_FINFO(inode)->nwattr = info.attributes;
1012#endif
1013 }
1025774c
CH		 1014 if (result)
1015 goto out;
1016
1017 setattr_copy(inode, attr);
1018 mark_inode_dirty(inode);
1019
1da177e4 1020out:
2e54eb96
PV		 1021 if (result > 0)
1022 result = -EACCES;
1da177e4
LT		 1023 return result;
1024}
1025
3c26ff6e
AV		 1026static struct dentry *ncp_mount(struct file_system_type *fs_type,
1027 int flags, const char *dev_name, void *data)
1da177e4 1028{
3c26ff6e 1029 return mount_nodev(fs_type, flags, data, ncp_fill_super);
1da177e4
LT		 1030}
1031
1032static struct file_system_type ncp_fs_type = {
1033 .owner = THIS_MODULE,
1034 .name = "ncpfs",
3c26ff6e 1035 .mount = ncp_mount,
1da177e4 1036 .kill_sb = kill_anon_super,
564cd138 1037 .fs_flags = FS_BINARY_MOUNTDATA,
1da177e4 1038};
7f78e035 1039MODULE_ALIAS_FS("ncpfs");
1da177e4
LT		 1040
1041static int __init init_ncp_fs(void)
1042{
1043 int err;
d3b73ca1 1044 ncp_dbg(1, "called\n");
1da177e4 1045
1da177e4
LT		 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{
d3b73ca1 1061 ncp_dbg(1, "called\n");
1da177e4
LT		 1062 unregister_filesystem(&ncp_fs_type);
1063 destroy_inodecache();
1da177e4
LT		 1064}
1065
1066module_init(init_ncp_fs)
1067module_exit(exit_ncp_fs)
1068MODULE_LICENSE("GPL");
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