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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs...
[linux-block.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
1da177e4
LT		 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>
564cd138
MS		 31#include <linux/mount.h>
32#include <linux/seq_file.h>
1da177e4
LT		 33
34#include <linux/ncp_fs.h>
35
36#include <net/sock.h>
37
38#include "ncplib_kernel.h"
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
1da177e4
LT		 46static void ncp_delete_inode(struct inode *);
47static void ncp_put_super(struct super_block *);
726c3342 48static int ncp_statfs(struct dentry *, struct kstatfs *);
564cd138 49static int ncp_show_options(struct seq_file *, struct vfsmount *);
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
62static void ncp_destroy_inode(struct inode *inode)
63{
64 kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode));
65}
66
51cc5068 67static void init_once(void *foo)
1da177e4
LT		 68{
69 struct ncp_inode_info *ei = (struct ncp_inode_info *) foo;
70
a35afb83
CL		 71 mutex_init(&ei->open_mutex);
72 inode_init_once(&ei->vfs_inode);
1da177e4 73}
20c2df83 74
1da177e4
LT		 75static int init_inodecache(void)
76{
77 ncp_inode_cachep = kmem_cache_create("ncp_inode_cache",
78 sizeof(struct ncp_inode_info),
fffb60f9
PJ		 79 0, (SLAB_RECLAIM_ACCOUNT|
80 SLAB_MEM_SPREAD),
20c2df83 81 init_once);
1da177e4
LT		 82 if (ncp_inode_cachep == NULL)
83 return -ENOMEM;
84 return 0;
85}
86
87static void destroy_inodecache(void)
88{
1a1d92c1 89 kmem_cache_destroy(ncp_inode_cachep);
1da177e4
LT		 90}
91
92static int ncp_remount(struct super_block *sb, int *flags, char* data)
93{
94 *flags |= MS_NODIRATIME;
95 return 0;
96}
97
ee9b6d61 98static const struct super_operations ncp_sops =
1da177e4
LT		 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,
564cd138 107 .show_options = ncp_show_options,
1da177e4
LT		 108};
109
1da177e4
LT		 110/*
111 * Fill in the ncpfs-specific information in the inode.
112 */
113static 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
120void 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
132static 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
152static 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
198void 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 */
213static 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;
1da177e4
LT		 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)
92e1d5be 232static const struct inode_operations ncp_symlink_inode_operations = {
1da177e4
LT		 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 */
243struct inode *
244ncp_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
284static void
285ncp_delete_inode(struct inode *inode)
286{
fef26658
MF		 287 truncate_inode_pages(&inode->i_data, 0);
288
1da177e4
LT		 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
300static 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
564cd138
MS		 310static 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
1da177e4
LT		 341static 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
356static 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;
1de24126 361 int ret;
1da177e4
LT		 362
363 data->flags = 0;
364 data->int_flags = 0;
365 data->mounted_uid = 0;
2154227a 366 data->wdog_pid = NULL;
1da177e4 367 data->ncp_fd = ~0;
564cd138
MS		 368 data->time_out = NCP_DEFAULT_TIME_OUT;
369 data->retry_count = NCP_DEFAULT_RETRY_COUNT;
1da177e4
LT		 370 data->uid = 0;
371 data->gid = 0;
564cd138
MS		 372 data->file_mode = NCP_DEFAULT_FILE_MODE;
373 data->dir_mode = NCP_DEFAULT_DIR_MODE;
1da177e4
LT		 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) {
1de24126
EB		 378 ret = optval;
379 if (ret < 0)
380 goto err;
1da177e4
LT		 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':
2154227a 407 data->wdog_pid = find_get_pid(optint);
1da177e4
LT		 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':
1de24126
EB		 416 ret = -ECHRNG;
417 if (optint < NCP_MOUNT_VERSION_V4)
418 goto err;
419 if (optint > NCP_MOUNT_VERSION_V5)
420 goto err;
1da177e4
LT		 421 version = optint;
422 break;
423
424 }
425 }
426 return 0;
1de24126
EB		 427err:
428 put_pid(data->wdog_pid);
429 data->wdog_pid = NULL;
430 return ret;
1da177e4
LT		 431}
432
433static 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
1de24126 448 data.wdog_pid = NULL;
f8314dc6 449 server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL);
1da177e4
LT		 450 if (!server)
451 return -ENOMEM;
452 sb->s_fs_info = server;
1da177e4
LT		 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;
2154227a 465 data.wdog_pid = find_get_pid(md->wdog_pid);
1da177e4
LT		 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;
2154227a 485 data.wdog_pid = find_get_pid(md->wdog_pid);
1da177e4
LT		 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;
92e5baef 511 sock_inode = ncp_filp->f_path.dentry->d_inode;
1da177e4
LT		 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;
92e5baef 544 sock_inode = server->info_filp->f_path.dentry->d_inode;
1da177e4
LT		 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; */
8e3f9045 557 mutex_init(&server->mutex);
1da177e4
LT		 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);
8e3f9045 594 mutex_init(&server->rcv.creq_mutex);
1da177e4
LT		 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;
c5f93cf1
PO		 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;
1da177e4
LT		 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;
c4028958
DH		 623 INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc);
624 INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc);
1da177e4
LT		 625 sock->sk->sk_write_space = ncp_tcp_write_space;
626 } else {
c4028958
DH		 627 INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc);
628 INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc);
1da177e4
LT		 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)
c5f93cf1 637 goto out_rxbuf;
1da177e4
LT		 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
700out_no_root:
701 iput(root_inode);
702out_disconnect:
703 ncp_lock_server(server);
704 ncp_disconnect(server);
705 ncp_unlock_server(server);
c5f93cf1 706out_rxbuf:
1da177e4 707 ncp_stop_tasks(server);
c5f93cf1
PO		 708 vfree(server->rxbuf);
709out_txbuf:
710 vfree(server->txbuf);
711out_packet:
1da177e4
LT		 712 vfree(server->packet);
713out_nls:
714#ifdef CONFIG_NCPFS_NLS
715 unload_nls(server->nls_io);
716 unload_nls(server->nls_vol);
717#endif
718out_fput2:
719 if (server->info_filp)
720 fput(server->info_filp);
721out_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);
728out:
1de24126 729 put_pid(data.wdog_pid);
1da177e4
LT		 730 sb->s_fs_info = NULL;
731 kfree(server);
732 return error;
733}
734
735static void ncp_put_super(struct super_block *sb)
736{
737 struct ncp_server *server = NCP_SBP(sb);
738
6cfd0148
CH		 739 lock_kernel();
740
1da177e4
LT		 741 ncp_lock_server(server);
742 ncp_disconnect(server);
743 ncp_unlock_server(server);
744
745 ncp_stop_tasks(server);
746
747#ifdef CONFIG_NCPFS_NLS
748 /* unload the NLS charsets */
6d729e44
TG		 749 unload_nls(server->nls_vol);
750 unload_nls(server->nls_io);
1da177e4
LT		 751#endif /* CONFIG_NCPFS_NLS */
752
753 if (server->info_filp)
754 fput(server->info_filp);
755 fput(server->ncp_filp);
2154227a
EB		 756 kill_pid(server->m.wdog_pid, SIGTERM, 1);
757 put_pid(server->m.wdog_pid);
1da177e4 758
44db77f3
PE		 759 kfree(server->priv.data);
760 kfree(server->auth.object_name);
c5f93cf1
PO		 761 vfree(server->rxbuf);
762 vfree(server->txbuf);
1da177e4
LT		 763 vfree(server->packet);
764 sb->s_fs_info = NULL;
765 kfree(server);
6cfd0148
CH		 766
767 unlock_kernel();
1da177e4
LT		 768}
769
726c3342 770static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
1da177e4
LT		 771{
772 struct dentry* d;
773 struct inode* i;
774 struct ncp_inode_info* ni;
775 struct ncp_server* s;
776 struct ncp_volume_info vi;
726c3342 777 struct super_block *sb = dentry->d_sb;
1da177e4
LT		 778 int err;
779 __u8 dh;
780
781 d = sb->s_root;
782 if (!d) {
783 goto dflt;
784 }
785 i = d->d_inode;
786 if (!i) {
787 goto dflt;
788 }
789 ni = NCP_FINFO(i);
790 if (!ni) {
791 goto dflt;
792 }
793 s = NCP_SBP(sb);
794 if (!s) {
795 goto dflt;
796 }
797 if (!s->m.mounted_vol[0]) {
798 goto dflt;
799 }
800
801 err = ncp_dirhandle_alloc(s, ni->volNumber, ni->DosDirNum, &dh);
802 if (err) {
803 goto dflt;
804 }
805 err = ncp_get_directory_info(s, dh, &vi);
806 ncp_dirhandle_free(s, dh);
807 if (err) {
808 goto dflt;
809 }
810 buf->f_type = NCP_SUPER_MAGIC;
811 buf->f_bsize = vi.sectors_per_block * 512;
812 buf->f_blocks = vi.total_blocks;
813 buf->f_bfree = vi.free_blocks;
814 buf->f_bavail = vi.free_blocks;
815 buf->f_files = vi.total_dir_entries;
816 buf->f_ffree = vi.available_dir_entries;
817 buf->f_namelen = 12;
818 return 0;
819
820 /* We cannot say how much disk space is left on a mounted
821 NetWare Server, because free space is distributed over
822 volumes, and the current user might have disk quotas. So
823 free space is not that simple to determine. Our decision
824 here is to err conservatively. */
825
826dflt:;
827 buf->f_type = NCP_SUPER_MAGIC;
828 buf->f_bsize = NCP_BLOCK_SIZE;
829 buf->f_blocks = 0;
830 buf->f_bfree = 0;
831 buf->f_bavail = 0;
832 buf->f_namelen = 12;
833 return 0;
834}
835
836int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
837{
838 struct inode *inode = dentry->d_inode;
839 int result = 0;
840 __le32 info_mask;
841 struct nw_modify_dos_info info;
842 struct ncp_server *server;
843
844 result = -EIO;
845
846 lock_kernel();
847
848 server = NCP_SERVER(inode);
849 if ((!server) || !ncp_conn_valid(server))
850 goto out;
851
852 /* ageing the dentry to force validation */
853 ncp_age_dentry(server, dentry);
854
855 result = inode_change_ok(inode, attr);
856 if (result < 0)
857 goto out;
858
859 result = -EPERM;
860 if (((attr->ia_valid & ATTR_UID) &&
861 (attr->ia_uid != server->m.uid)))
862 goto out;
863
864 if (((attr->ia_valid & ATTR_GID) &&
865 (attr->ia_gid != server->m.gid)))
866 goto out;
867
868 if (((attr->ia_valid & ATTR_MODE) &&
869 (attr->ia_mode &
870 ~(S_IFREG | S_IFDIR | S_IRWXUGO))))
871 goto out;
872
873 info_mask = 0;
874 memset(&info, 0, sizeof(info));
875
876#if 1
877 if ((attr->ia_valid & ATTR_MODE) != 0)
878 {
879 umode_t newmode = attr->ia_mode;
880
881 info_mask |= DM_ATTRIBUTES;
882
883 if (S_ISDIR(inode->i_mode)) {
884 newmode &= server->m.dir_mode;
885 } else {
886#ifdef CONFIG_NCPFS_EXTRAS
887 if (server->m.flags & NCP_MOUNT_EXTRAS) {
888 /* any non-default execute bit set */
889 if (newmode & ~server->m.file_mode & S_IXUGO)
890 info.attributes |= aSHARED | aSYSTEM;
891 /* read for group/world and not in default file_mode */
892 else if (newmode & ~server->m.file_mode & S_IRUGO)
893 info.attributes |= aSHARED;
894 } else
895#endif
896 newmode &= server->m.file_mode;
897 }
898 if (newmode & S_IWUGO)
899 info.attributes &= ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
900 else
901 info.attributes |= (aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
902
903#ifdef CONFIG_NCPFS_NFS_NS
904 if (ncp_is_nfs_extras(server, NCP_FINFO(inode)->volNumber)) {
905 result = ncp_modify_nfs_info(server,
906 NCP_FINFO(inode)->volNumber,
907 NCP_FINFO(inode)->dirEntNum,
908 attr->ia_mode, 0);
909 if (result != 0)
910 goto out;
911 info.attributes &= ~(aSHARED | aSYSTEM);
912 {
913 /* mark partial success */
914 struct iattr tmpattr;
915
916 tmpattr.ia_valid = ATTR_MODE;
917 tmpattr.ia_mode = attr->ia_mode;
918
919 result = inode_setattr(inode, &tmpattr);
920 if (result)
921 goto out;
922 }
923 }
924#endif
925 }
926#endif
927
928 /* Do SIZE before attributes, otherwise mtime together with size does not work...
929 */
930 if ((attr->ia_valid & ATTR_SIZE) != 0) {
931 int written;
932
933 DPRINTK("ncpfs: trying to change size to %ld\n",
934 attr->ia_size);
935
936 if ((result = ncp_make_open(inode, O_WRONLY)) < 0) {
937 result = -EACCES;
938 goto out;
939 }
940 ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle,
941 attr->ia_size, 0, "", &written);
942
943 /* According to ndir, the changes only take effect after
944 closing the file */
945 ncp_inode_close(inode);
946 result = ncp_make_closed(inode);
947 if (result)
948 goto out;
949 {
950 struct iattr tmpattr;
951
952 tmpattr.ia_valid = ATTR_SIZE;
953 tmpattr.ia_size = attr->ia_size;
954
955 result = inode_setattr(inode, &tmpattr);
956 if (result)
957 goto out;
958 }
959 }
960 if ((attr->ia_valid & ATTR_CTIME) != 0) {
961 info_mask |= (DM_CREATE_TIME | DM_CREATE_DATE);
962 ncp_date_unix2dos(attr->ia_ctime.tv_sec,
963 &info.creationTime, &info.creationDate);
964 }
965 if ((attr->ia_valid & ATTR_MTIME) != 0) {
966 info_mask |= (DM_MODIFY_TIME | DM_MODIFY_DATE);
967 ncp_date_unix2dos(attr->ia_mtime.tv_sec,
968 &info.modifyTime, &info.modifyDate);
969 }
970 if ((attr->ia_valid & ATTR_ATIME) != 0) {
971 __le16 dummy;
972 info_mask |= (DM_LAST_ACCESS_DATE);
973 ncp_date_unix2dos(attr->ia_atime.tv_sec,
974 &dummy, &info.lastAccessDate);
975 }
976 if (info_mask != 0) {
977 result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),
978 inode, info_mask, &info);
979 if (result != 0) {
980 result = -EACCES;
981
982 if (info_mask == (DM_CREATE_TIME | DM_CREATE_DATE)) {
983 /* NetWare seems not to allow this. I
984 do not know why. So, just tell the
985 user everything went fine. This is
986 a terrible hack, but I do not know
987 how to do this correctly. */
988 result = 0;
989 } else
990 goto out;
991 }
992#ifdef CONFIG_NCPFS_STRONG
993 if ((!result) && (info_mask & DM_ATTRIBUTES))
994 NCP_FINFO(inode)->nwattr = info.attributes;
995#endif
996 }
997 if (!result)
998 result = inode_setattr(inode, attr);
999out:
1000 unlock_kernel();
1001 return result;
1002}
1003
454e2398
DH		 1004static int ncp_get_sb(struct file_system_type *fs_type,
1005 int flags, const char *dev_name, void *data, struct vfsmount *mnt)
1da177e4 1006{
454e2398 1007 return get_sb_nodev(fs_type, flags, data, ncp_fill_super, mnt);
1da177e4
LT		 1008}
1009
1010static struct file_system_type ncp_fs_type = {
1011 .owner = THIS_MODULE,
1012 .name = "ncpfs",
1013 .get_sb = ncp_get_sb,
1014 .kill_sb = kill_anon_super,
564cd138 1015 .fs_flags = FS_BINARY_MOUNTDATA,
1da177e4
LT		 1016};
1017
1018static int __init init_ncp_fs(void)
1019{
1020 int err;
7c28cbae 1021 DPRINTK("ncpfs: init_ncp_fs called\n");
1da177e4 1022
1da177e4
LT		 1023 err = init_inodecache();
1024 if (err)
1025 goto out1;
1026 err = register_filesystem(&ncp_fs_type);
1027 if (err)
1028 goto out;
1029 return 0;
1030out:
1031 destroy_inodecache();
1032out1:
1033 return err;
1034}
1035
1036static void __exit exit_ncp_fs(void)
1037{
7c28cbae 1038 DPRINTK("ncpfs: exit_ncp_fs called\n");
1da177e4
LT		 1039 unregister_filesystem(&ncp_fs_type);
1040 destroy_inodecache();
1da177e4
LT		 1041}
1042
1043module_init(init_ncp_fs)
1044module_exit(exit_ncp_fs)
1045MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)