Commit | Line | Data |
---|---|---|
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 | ||
1da177e4 LT |
16 | #include <asm/uaccess.h> |
17 | #include <asm/byteorder.h> | |
18 | ||
19 | #include <linux/time.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/mm.h> | |
22 | #include <linux/string.h> | |
23 | #include <linux/stat.h> | |
24 | #include <linux/errno.h> | |
25 | #include <linux/file.h> | |
26 | #include <linux/fcntl.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/vmalloc.h> | |
29 | #include <linux/init.h> | |
1da177e4 | 30 | #include <linux/vfs.h> |
564cd138 MS |
31 | #include <linux/mount.h> |
32 | #include <linux/seq_file.h> | |
34286d66 | 33 | #include <linux/namei.h> |
1da177e4 | 34 | |
1da177e4 LT |
35 | #include <net/sock.h> |
36 | ||
32c419d9 | 37 | #include "ncp_fs.h" |
1da177e4 LT |
38 | #include "getopt.h" |
39 | ||
564cd138 MS |
40 | #define NCP_DEFAULT_FILE_MODE 0600 |
41 | #define NCP_DEFAULT_DIR_MODE 0700 | |
42 | #define NCP_DEFAULT_TIME_OUT 10 | |
43 | #define NCP_DEFAULT_RETRY_COUNT 20 | |
44 | ||
94ee8494 | 45 | static void ncp_evict_inode(struct inode *); |
1da177e4 | 46 | static void ncp_put_super(struct super_block *); |
726c3342 | 47 | static int ncp_statfs(struct dentry *, struct kstatfs *); |
34c80b1d | 48 | static int ncp_show_options(struct seq_file *, struct dentry *); |
1da177e4 | 49 | |
e18b890b | 50 | static struct kmem_cache * ncp_inode_cachep; |
1da177e4 LT |
51 | |
52 | static struct inode *ncp_alloc_inode(struct super_block *sb) | |
53 | { | |
54 | struct ncp_inode_info *ei; | |
e94b1766 | 55 | ei = (struct ncp_inode_info *)kmem_cache_alloc(ncp_inode_cachep, GFP_KERNEL); |
1da177e4 LT |
56 | if (!ei) |
57 | return NULL; | |
58 | return &ei->vfs_inode; | |
59 | } | |
60 | ||
fa0d7e3d | 61 | static void ncp_i_callback(struct rcu_head *head) |
1da177e4 | 62 | { |
fa0d7e3d | 63 | struct inode *inode = container_of(head, struct inode, i_rcu); |
1da177e4 LT |
64 | kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode)); |
65 | } | |
66 | ||
fa0d7e3d NP |
67 | static void ncp_destroy_inode(struct inode *inode) |
68 | { | |
69 | call_rcu(&inode->i_rcu, ncp_i_callback); | |
70 | } | |
71 | ||
51cc5068 | 72 | static void init_once(void *foo) |
1da177e4 LT |
73 | { |
74 | struct ncp_inode_info *ei = (struct ncp_inode_info *) foo; | |
75 | ||
a35afb83 CL |
76 | mutex_init(&ei->open_mutex); |
77 | inode_init_once(&ei->vfs_inode); | |
1da177e4 | 78 | } |
20c2df83 | 79 | |
1da177e4 LT |
80 | static int init_inodecache(void) |
81 | { | |
82 | ncp_inode_cachep = kmem_cache_create("ncp_inode_cache", | |
83 | sizeof(struct ncp_inode_info), | |
fffb60f9 PJ |
84 | 0, (SLAB_RECLAIM_ACCOUNT| |
85 | SLAB_MEM_SPREAD), | |
20c2df83 | 86 | init_once); |
1da177e4 LT |
87 | if (ncp_inode_cachep == NULL) |
88 | return -ENOMEM; | |
89 | return 0; | |
90 | } | |
91 | ||
92 | static void destroy_inodecache(void) | |
93 | { | |
8c0a8537 KS |
94 | /* |
95 | * Make sure all delayed rcu free inodes are flushed before we | |
96 | * destroy cache. | |
97 | */ | |
98 | rcu_barrier(); | |
1a1d92c1 | 99 | kmem_cache_destroy(ncp_inode_cachep); |
1da177e4 LT |
100 | } |
101 | ||
102 | static int ncp_remount(struct super_block *sb, int *flags, char* data) | |
103 | { | |
02b9984d | 104 | sync_filesystem(sb); |
1da177e4 LT |
105 | *flags |= MS_NODIRATIME; |
106 | return 0; | |
107 | } | |
108 | ||
ee9b6d61 | 109 | static const struct super_operations ncp_sops = |
1da177e4 LT |
110 | { |
111 | .alloc_inode = ncp_alloc_inode, | |
112 | .destroy_inode = ncp_destroy_inode, | |
113 | .drop_inode = generic_delete_inode, | |
94ee8494 | 114 | .evict_inode = ncp_evict_inode, |
1da177e4 LT |
115 | .put_super = ncp_put_super, |
116 | .statfs = ncp_statfs, | |
117 | .remount_fs = ncp_remount, | |
564cd138 | 118 | .show_options = ncp_show_options, |
1da177e4 LT |
119 | }; |
120 | ||
1da177e4 LT |
121 | /* |
122 | * Fill in the ncpfs-specific information in the inode. | |
123 | */ | |
124 | static void ncp_update_dirent(struct inode *inode, struct ncp_entry_info *nwinfo) | |
125 | { | |
126 | NCP_FINFO(inode)->DosDirNum = nwinfo->i.DosDirNum; | |
127 | NCP_FINFO(inode)->dirEntNum = nwinfo->i.dirEntNum; | |
128 | NCP_FINFO(inode)->volNumber = nwinfo->volume; | |
129 | } | |
130 | ||
131 | void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo) | |
132 | { | |
133 | ncp_update_dirent(inode, nwinfo); | |
134 | NCP_FINFO(inode)->nwattr = nwinfo->i.attributes; | |
135 | NCP_FINFO(inode)->access = nwinfo->access; | |
136 | memcpy(NCP_FINFO(inode)->file_handle, nwinfo->file_handle, | |
137 | sizeof(nwinfo->file_handle)); | |
d3b73ca1 | 138 | ncp_dbg(1, "updated %s, volnum=%d, dirent=%u\n", |
1da177e4 LT |
139 | nwinfo->i.entryName, NCP_FINFO(inode)->volNumber, |
140 | NCP_FINFO(inode)->dirEntNum); | |
141 | } | |
142 | ||
143 | static void ncp_update_dates(struct inode *inode, struct nw_info_struct *nwi) | |
144 | { | |
145 | /* NFS namespace mode overrides others if it's set. */ | |
d3b73ca1 | 146 | ncp_dbg(1, "(%s) nfs.mode=0%o\n", nwi->entryName, nwi->nfs.mode); |
1da177e4 LT |
147 | if (nwi->nfs.mode) { |
148 | /* XXX Security? */ | |
149 | inode->i_mode = nwi->nfs.mode; | |
150 | } | |
151 | ||
2e54eb96 | 152 | inode->i_blocks = (i_size_read(inode) + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT; |
1da177e4 LT |
153 | |
154 | inode->i_mtime.tv_sec = ncp_date_dos2unix(nwi->modifyTime, nwi->modifyDate); | |
155 | inode->i_ctime.tv_sec = ncp_date_dos2unix(nwi->creationTime, nwi->creationDate); | |
156 | inode->i_atime.tv_sec = ncp_date_dos2unix(0, nwi->lastAccessDate); | |
157 | inode->i_atime.tv_nsec = 0; | |
158 | inode->i_mtime.tv_nsec = 0; | |
159 | inode->i_ctime.tv_nsec = 0; | |
160 | } | |
161 | ||
162 | static void ncp_update_attrs(struct inode *inode, struct ncp_entry_info *nwinfo) | |
163 | { | |
164 | struct nw_info_struct *nwi = &nwinfo->i; | |
165 | struct ncp_server *server = NCP_SERVER(inode); | |
166 | ||
167 | if (nwi->attributes & aDIR) { | |
168 | inode->i_mode = server->m.dir_mode; | |
169 | /* for directories dataStreamSize seems to be some | |
170 | Object ID ??? */ | |
2e54eb96 | 171 | i_size_write(inode, NCP_BLOCK_SIZE); |
1da177e4 | 172 | } else { |
2e54eb96 PV |
173 | u32 size; |
174 | ||
1da177e4 | 175 | inode->i_mode = server->m.file_mode; |
2e54eb96 PV |
176 | size = le32_to_cpu(nwi->dataStreamSize); |
177 | i_size_write(inode, size); | |
1da177e4 LT |
178 | #ifdef CONFIG_NCPFS_EXTRAS |
179 | if ((server->m.flags & (NCP_MOUNT_EXTRAS|NCP_MOUNT_SYMLINKS)) | |
180 | && (nwi->attributes & aSHARED)) { | |
181 | switch (nwi->attributes & (aHIDDEN|aSYSTEM)) { | |
182 | case aHIDDEN: | |
183 | if (server->m.flags & NCP_MOUNT_SYMLINKS) { | |
2e54eb96 PV |
184 | if (/* (size >= NCP_MIN_SYMLINK_SIZE) |
185 | && */ (size <= NCP_MAX_SYMLINK_SIZE)) { | |
1da177e4 LT |
186 | inode->i_mode = (inode->i_mode & ~S_IFMT) | S_IFLNK; |
187 | NCP_FINFO(inode)->flags |= NCPI_KLUDGE_SYMLINK; | |
188 | break; | |
189 | } | |
190 | } | |
191 | /* FALLTHROUGH */ | |
192 | case 0: | |
193 | if (server->m.flags & NCP_MOUNT_EXTRAS) | |
194 | inode->i_mode |= S_IRUGO; | |
195 | break; | |
196 | case aSYSTEM: | |
197 | if (server->m.flags & NCP_MOUNT_EXTRAS) | |
198 | inode->i_mode |= (inode->i_mode >> 2) & S_IXUGO; | |
199 | break; | |
200 | /* case aSYSTEM|aHIDDEN: */ | |
201 | default: | |
202 | /* reserved combination */ | |
203 | break; | |
204 | } | |
205 | } | |
206 | #endif | |
207 | } | |
208 | if (nwi->attributes & aRONLY) inode->i_mode &= ~S_IWUGO; | |
209 | } | |
210 | ||
211 | void ncp_update_inode2(struct inode* inode, struct ncp_entry_info *nwinfo) | |
212 | { | |
213 | NCP_FINFO(inode)->flags = 0; | |
214 | if (!atomic_read(&NCP_FINFO(inode)->opened)) { | |
215 | NCP_FINFO(inode)->nwattr = nwinfo->i.attributes; | |
216 | ncp_update_attrs(inode, nwinfo); | |
217 | } | |
218 | ||
219 | ncp_update_dates(inode, &nwinfo->i); | |
220 | ncp_update_dirent(inode, nwinfo); | |
221 | } | |
222 | ||
223 | /* | |
2e54eb96 | 224 | * Fill in the inode based on the ncp_entry_info structure. Used only for brand new inodes. |
1da177e4 LT |
225 | */ |
226 | static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo) | |
227 | { | |
228 | struct ncp_server *server = NCP_SERVER(inode); | |
229 | ||
230 | NCP_FINFO(inode)->flags = 0; | |
231 | ||
232 | ncp_update_attrs(inode, nwinfo); | |
233 | ||
d3b73ca1 | 234 | ncp_dbg(2, "inode->i_mode = %u\n", inode->i_mode); |
1da177e4 | 235 | |
bfe86848 | 236 | set_nlink(inode, 1); |
1da177e4 LT |
237 | inode->i_uid = server->m.uid; |
238 | inode->i_gid = server->m.gid; | |
1da177e4 LT |
239 | |
240 | ncp_update_dates(inode, &nwinfo->i); | |
241 | ncp_update_inode(inode, nwinfo); | |
242 | } | |
243 | ||
244 | #if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS) | |
92e1d5be | 245 | static const struct inode_operations ncp_symlink_inode_operations = { |
1da177e4 LT |
246 | .readlink = generic_readlink, |
247 | .follow_link = page_follow_link_light, | |
248 | .put_link = page_put_link, | |
249 | .setattr = ncp_notify_change, | |
250 | }; | |
251 | #endif | |
252 | ||
253 | /* | |
254 | * Get a new inode. | |
255 | */ | |
256 | struct inode * | |
257 | ncp_iget(struct super_block *sb, struct ncp_entry_info *info) | |
258 | { | |
259 | struct inode *inode; | |
260 | ||
261 | if (info == NULL) { | |
b41f8b84 | 262 | pr_err("%s: info is NULL\n", __func__); |
1da177e4 LT |
263 | return NULL; |
264 | } | |
265 | ||
266 | inode = new_inode(sb); | |
267 | if (inode) { | |
268 | atomic_set(&NCP_FINFO(inode)->opened, info->opened); | |
269 | ||
2e54eb96 | 270 | inode->i_mapping->backing_dev_info = sb->s_bdi; |
1da177e4 LT |
271 | inode->i_ino = info->ino; |
272 | ncp_set_attr(inode, info); | |
273 | if (S_ISREG(inode->i_mode)) { | |
274 | inode->i_op = &ncp_file_inode_operations; | |
275 | inode->i_fop = &ncp_file_operations; | |
276 | } else if (S_ISDIR(inode->i_mode)) { | |
277 | inode->i_op = &ncp_dir_inode_operations; | |
278 | inode->i_fop = &ncp_dir_operations; | |
279 | #ifdef CONFIG_NCPFS_NFS_NS | |
280 | } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { | |
281 | init_special_inode(inode, inode->i_mode, | |
282 | new_decode_dev(info->i.nfs.rdev)); | |
283 | #endif | |
284 | #if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS) | |
285 | } else if (S_ISLNK(inode->i_mode)) { | |
286 | inode->i_op = &ncp_symlink_inode_operations; | |
287 | inode->i_data.a_ops = &ncp_symlink_aops; | |
288 | #endif | |
289 | } else { | |
290 | make_bad_inode(inode); | |
291 | } | |
292 | insert_inode_hash(inode); | |
293 | } else | |
b41f8b84 | 294 | pr_err("%s: iget failed!\n", __func__); |
1da177e4 LT |
295 | return inode; |
296 | } | |
297 | ||
298 | static void | |
94ee8494 | 299 | ncp_evict_inode(struct inode *inode) |
1da177e4 | 300 | { |
91b0abe3 | 301 | truncate_inode_pages_final(&inode->i_data); |
dbd5768f | 302 | clear_inode(inode); |
fef26658 | 303 | |
1da177e4 | 304 | if (S_ISDIR(inode->i_mode)) { |
d3b73ca1 | 305 | ncp_dbg(2, "put directory %ld\n", inode->i_ino); |
1da177e4 LT |
306 | } |
307 | ||
308 | if (ncp_make_closed(inode) != 0) { | |
309 | /* We can't do anything but complain. */ | |
b41f8b84 | 310 | pr_err("%s: could not close\n", __func__); |
1da177e4 | 311 | } |
1da177e4 LT |
312 | } |
313 | ||
314 | static void ncp_stop_tasks(struct ncp_server *server) { | |
315 | struct sock* sk = server->ncp_sock->sk; | |
2a4df5d3 PV |
316 | |
317 | lock_sock(sk); | |
1da177e4 LT |
318 | sk->sk_error_report = server->error_report; |
319 | sk->sk_data_ready = server->data_ready; | |
320 | sk->sk_write_space = server->write_space; | |
2a4df5d3 | 321 | release_sock(sk); |
1da177e4 | 322 | del_timer_sync(&server->timeout_tm); |
5d8e4bdd | 323 | |
43829731 | 324 | flush_work(&server->rcv.tq); |
5d8e4bdd | 325 | if (sk->sk_socket->type == SOCK_STREAM) |
43829731 | 326 | flush_work(&server->tx.tq); |
5d8e4bdd | 327 | else |
43829731 | 328 | flush_work(&server->timeout_tq); |
1da177e4 LT |
329 | } |
330 | ||
34c80b1d | 331 | static int ncp_show_options(struct seq_file *seq, struct dentry *root) |
564cd138 | 332 | { |
34c80b1d | 333 | struct ncp_server *server = NCP_SBP(root->d_sb); |
564cd138 MS |
334 | unsigned int tmp; |
335 | ||
1ac7fd81 EB |
336 | if (!uid_eq(server->m.uid, GLOBAL_ROOT_UID)) |
337 | seq_printf(seq, ",uid=%u", | |
338 | from_kuid_munged(&init_user_ns, server->m.uid)); | |
339 | if (!gid_eq(server->m.gid, GLOBAL_ROOT_GID)) | |
340 | seq_printf(seq, ",gid=%u", | |
341 | from_kgid_munged(&init_user_ns, server->m.gid)); | |
342 | if (!uid_eq(server->m.mounted_uid, GLOBAL_ROOT_UID)) | |
343 | seq_printf(seq, ",owner=%u", | |
344 | from_kuid_munged(&init_user_ns, server->m.mounted_uid)); | |
564cd138 MS |
345 | tmp = server->m.file_mode & S_IALLUGO; |
346 | if (tmp != NCP_DEFAULT_FILE_MODE) | |
347 | seq_printf(seq, ",mode=0%o", tmp); | |
348 | tmp = server->m.dir_mode & S_IALLUGO; | |
349 | if (tmp != NCP_DEFAULT_DIR_MODE) | |
350 | seq_printf(seq, ",dirmode=0%o", tmp); | |
351 | if (server->m.time_out != NCP_DEFAULT_TIME_OUT * HZ / 100) { | |
352 | tmp = server->m.time_out * 100 / HZ; | |
353 | seq_printf(seq, ",timeout=%u", tmp); | |
354 | } | |
355 | if (server->m.retry_count != NCP_DEFAULT_RETRY_COUNT) | |
356 | seq_printf(seq, ",retry=%u", server->m.retry_count); | |
357 | if (server->m.flags != 0) | |
358 | seq_printf(seq, ",flags=%lu", server->m.flags); | |
359 | if (server->m.wdog_pid != NULL) | |
360 | seq_printf(seq, ",wdogpid=%u", pid_vnr(server->m.wdog_pid)); | |
361 | ||
362 | return 0; | |
363 | } | |
364 | ||
1da177e4 LT |
365 | static const struct ncp_option ncp_opts[] = { |
366 | { "uid", OPT_INT, 'u' }, | |
367 | { "gid", OPT_INT, 'g' }, | |
368 | { "owner", OPT_INT, 'o' }, | |
369 | { "mode", OPT_INT, 'm' }, | |
370 | { "dirmode", OPT_INT, 'd' }, | |
371 | { "timeout", OPT_INT, 't' }, | |
372 | { "retry", OPT_INT, 'r' }, | |
373 | { "flags", OPT_INT, 'f' }, | |
374 | { "wdogpid", OPT_INT, 'w' }, | |
375 | { "ncpfd", OPT_INT, 'n' }, | |
376 | { "infofd", OPT_INT, 'i' }, /* v5 */ | |
377 | { "version", OPT_INT, 'v' }, | |
378 | { NULL, 0, 0 } }; | |
379 | ||
380 | static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) { | |
381 | int optval; | |
382 | char *optarg; | |
383 | unsigned long optint; | |
384 | int version = 0; | |
1de24126 | 385 | int ret; |
1da177e4 LT |
386 | |
387 | data->flags = 0; | |
388 | data->int_flags = 0; | |
1ac7fd81 | 389 | data->mounted_uid = GLOBAL_ROOT_UID; |
2154227a | 390 | data->wdog_pid = NULL; |
1da177e4 | 391 | data->ncp_fd = ~0; |
564cd138 MS |
392 | data->time_out = NCP_DEFAULT_TIME_OUT; |
393 | data->retry_count = NCP_DEFAULT_RETRY_COUNT; | |
1ac7fd81 EB |
394 | data->uid = GLOBAL_ROOT_UID; |
395 | data->gid = GLOBAL_ROOT_GID; | |
564cd138 MS |
396 | data->file_mode = NCP_DEFAULT_FILE_MODE; |
397 | data->dir_mode = NCP_DEFAULT_DIR_MODE; | |
1da177e4 LT |
398 | data->info_fd = -1; |
399 | data->mounted_vol[0] = 0; | |
400 | ||
401 | while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) { | |
1de24126 EB |
402 | ret = optval; |
403 | if (ret < 0) | |
404 | goto err; | |
1da177e4 LT |
405 | switch (optval) { |
406 | case 'u': | |
1ac7fd81 | 407 | data->uid = make_kuid(current_user_ns(), optint); |
4fbeb19d WY |
408 | if (!uid_valid(data->uid)) { |
409 | ret = -EINVAL; | |
1ac7fd81 | 410 | goto err; |
4fbeb19d | 411 | } |
1da177e4 LT |
412 | break; |
413 | case 'g': | |
1ac7fd81 | 414 | data->gid = make_kgid(current_user_ns(), optint); |
4fbeb19d WY |
415 | if (!gid_valid(data->gid)) { |
416 | ret = -EINVAL; | |
1ac7fd81 | 417 | goto err; |
4fbeb19d | 418 | } |
1da177e4 LT |
419 | break; |
420 | case 'o': | |
1ac7fd81 | 421 | data->mounted_uid = make_kuid(current_user_ns(), optint); |
4fbeb19d WY |
422 | if (!uid_valid(data->mounted_uid)) { |
423 | ret = -EINVAL; | |
1ac7fd81 | 424 | goto err; |
4fbeb19d | 425 | } |
1da177e4 LT |
426 | break; |
427 | case 'm': | |
428 | data->file_mode = optint; | |
429 | break; | |
430 | case 'd': | |
431 | data->dir_mode = optint; | |
432 | break; | |
433 | case 't': | |
434 | data->time_out = optint; | |
435 | break; | |
436 | case 'r': | |
437 | data->retry_count = optint; | |
438 | break; | |
439 | case 'f': | |
440 | data->flags = optint; | |
441 | break; | |
442 | case 'w': | |
2154227a | 443 | data->wdog_pid = find_get_pid(optint); |
1da177e4 LT |
444 | break; |
445 | case 'n': | |
446 | data->ncp_fd = optint; | |
447 | break; | |
448 | case 'i': | |
449 | data->info_fd = optint; | |
450 | break; | |
451 | case 'v': | |
1de24126 EB |
452 | ret = -ECHRNG; |
453 | if (optint < NCP_MOUNT_VERSION_V4) | |
454 | goto err; | |
455 | if (optint > NCP_MOUNT_VERSION_V5) | |
456 | goto err; | |
1da177e4 LT |
457 | version = optint; |
458 | break; | |
459 | ||
460 | } | |
461 | } | |
462 | return 0; | |
1de24126 EB |
463 | err: |
464 | put_pid(data->wdog_pid); | |
465 | data->wdog_pid = NULL; | |
466 | return ret; | |
1da177e4 LT |
467 | } |
468 | ||
469 | static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) | |
470 | { | |
471 | struct ncp_mount_data_kernel data; | |
472 | struct ncp_server *server; | |
473 | struct file *ncp_filp; | |
474 | struct inode *root_inode; | |
475 | struct inode *sock_inode; | |
476 | struct socket *sock; | |
477 | int error; | |
478 | int default_bufsize; | |
479 | #ifdef CONFIG_NCPFS_PACKET_SIGNING | |
480 | int options; | |
481 | #endif | |
482 | struct ncp_entry_info finfo; | |
483 | ||
2a5cac17 | 484 | memset(&data, 0, sizeof(data)); |
f8314dc6 | 485 | server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL); |
1da177e4 LT |
486 | if (!server) |
487 | return -ENOMEM; | |
488 | sb->s_fs_info = server; | |
1da177e4 LT |
489 | |
490 | error = -EFAULT; | |
491 | if (raw_data == NULL) | |
492 | goto out; | |
493 | switch (*(int*)raw_data) { | |
494 | case NCP_MOUNT_VERSION: | |
495 | { | |
496 | struct ncp_mount_data* md = (struct ncp_mount_data*)raw_data; | |
497 | ||
498 | data.flags = md->flags; | |
499 | data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE; | |
1ac7fd81 | 500 | data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid); |
2154227a | 501 | data.wdog_pid = find_get_pid(md->wdog_pid); |
1da177e4 LT |
502 | data.ncp_fd = md->ncp_fd; |
503 | data.time_out = md->time_out; | |
504 | data.retry_count = md->retry_count; | |
1ac7fd81 EB |
505 | data.uid = make_kuid(current_user_ns(), md->uid); |
506 | data.gid = make_kgid(current_user_ns(), md->gid); | |
1da177e4 LT |
507 | data.file_mode = md->file_mode; |
508 | data.dir_mode = md->dir_mode; | |
509 | data.info_fd = -1; | |
510 | memcpy(data.mounted_vol, md->mounted_vol, | |
511 | NCP_VOLNAME_LEN+1); | |
512 | } | |
513 | break; | |
514 | case NCP_MOUNT_VERSION_V4: | |
515 | { | |
516 | struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data; | |
517 | ||
518 | data.flags = md->flags; | |
1ac7fd81 | 519 | data.mounted_uid = make_kuid(current_user_ns(), md->mounted_uid); |
2154227a | 520 | data.wdog_pid = find_get_pid(md->wdog_pid); |
1da177e4 LT |
521 | data.ncp_fd = md->ncp_fd; |
522 | data.time_out = md->time_out; | |
523 | data.retry_count = md->retry_count; | |
1ac7fd81 EB |
524 | data.uid = make_kuid(current_user_ns(), md->uid); |
525 | data.gid = make_kgid(current_user_ns(), md->gid); | |
1da177e4 LT |
526 | data.file_mode = md->file_mode; |
527 | data.dir_mode = md->dir_mode; | |
528 | data.info_fd = -1; | |
1da177e4 LT |
529 | } |
530 | break; | |
531 | default: | |
532 | error = -ECHRNG; | |
533 | if (memcmp(raw_data, "vers", 4) == 0) { | |
534 | error = ncp_parse_options(&data, raw_data); | |
535 | } | |
536 | if (error) | |
537 | goto out; | |
538 | break; | |
539 | } | |
1ac7fd81 EB |
540 | error = -EINVAL; |
541 | if (!uid_valid(data.mounted_uid) || !uid_valid(data.uid) || | |
542 | !gid_valid(data.gid)) | |
543 | goto out; | |
1da177e4 LT |
544 | error = -EBADF; |
545 | ncp_filp = fget(data.ncp_fd); | |
546 | if (!ncp_filp) | |
547 | goto out; | |
548 | error = -ENOTSOCK; | |
496ad9aa | 549 | sock_inode = file_inode(ncp_filp); |
1da177e4 LT |
550 | if (!S_ISSOCK(sock_inode->i_mode)) |
551 | goto out_fput; | |
552 | sock = SOCKET_I(sock_inode); | |
553 | if (!sock) | |
554 | goto out_fput; | |
555 | ||
556 | if (sock->type == SOCK_STREAM) | |
557 | default_bufsize = 0xF000; | |
558 | else | |
559 | default_bufsize = 1024; | |
560 | ||
561 | sb->s_flags |= MS_NODIRATIME; /* probably even noatime */ | |
562 | sb->s_maxbytes = 0xFFFFFFFFU; | |
563 | sb->s_blocksize = 1024; /* Eh... Is this correct? */ | |
564 | sb->s_blocksize_bits = 10; | |
565 | sb->s_magic = NCP_SUPER_MAGIC; | |
566 | sb->s_op = &ncp_sops; | |
0378c405 | 567 | sb->s_d_op = &ncp_dentry_operations; |
f1970c73 | 568 | sb->s_bdi = &server->bdi; |
1da177e4 LT |
569 | |
570 | server = NCP_SBP(sb); | |
571 | memset(server, 0, sizeof(*server)); | |
572 | ||
f1970c73 JA |
573 | error = bdi_setup_and_register(&server->bdi, "ncpfs", BDI_CAP_MAP_COPY); |
574 | if (error) | |
759c361e | 575 | goto out_fput; |
f1970c73 | 576 | |
1da177e4 LT |
577 | server->ncp_filp = ncp_filp; |
578 | server->ncp_sock = sock; | |
579 | ||
580 | if (data.info_fd != -1) { | |
581 | struct socket *info_sock; | |
582 | ||
583 | error = -EBADF; | |
584 | server->info_filp = fget(data.info_fd); | |
585 | if (!server->info_filp) | |
759c361e | 586 | goto out_bdi; |
1da177e4 | 587 | error = -ENOTSOCK; |
496ad9aa | 588 | sock_inode = file_inode(server->info_filp); |
1da177e4 LT |
589 | if (!S_ISSOCK(sock_inode->i_mode)) |
590 | goto out_fput2; | |
591 | info_sock = SOCKET_I(sock_inode); | |
592 | if (!info_sock) | |
593 | goto out_fput2; | |
594 | error = -EBADFD; | |
595 | if (info_sock->type != SOCK_STREAM) | |
596 | goto out_fput2; | |
597 | server->info_sock = info_sock; | |
598 | } | |
599 | ||
600 | /* server->lock = 0; */ | |
8e3f9045 | 601 | mutex_init(&server->mutex); |
1da177e4 LT |
602 | server->packet = NULL; |
603 | /* server->buffer_size = 0; */ | |
604 | /* server->conn_status = 0; */ | |
605 | /* server->root_dentry = NULL; */ | |
606 | /* server->root_setuped = 0; */ | |
2e54eb96 | 607 | mutex_init(&server->root_setup_lock); |
1da177e4 LT |
608 | #ifdef CONFIG_NCPFS_PACKET_SIGNING |
609 | /* server->sign_wanted = 0; */ | |
610 | /* server->sign_active = 0; */ | |
611 | #endif | |
2e54eb96 | 612 | init_rwsem(&server->auth_rwsem); |
1da177e4 LT |
613 | server->auth.auth_type = NCP_AUTH_NONE; |
614 | /* server->auth.object_name_len = 0; */ | |
615 | /* server->auth.object_name = NULL; */ | |
616 | /* server->auth.object_type = 0; */ | |
617 | /* server->priv.len = 0; */ | |
618 | /* server->priv.data = NULL; */ | |
619 | ||
620 | server->m = data; | |
25985edc | 621 | /* Although anything producing this is buggy, it happens |
1da177e4 LT |
622 | now because of PATH_MAX changes.. */ |
623 | if (server->m.time_out < 1) { | |
624 | server->m.time_out = 10; | |
b41f8b84 | 625 | pr_info("You need to recompile your ncpfs utils..\n"); |
1da177e4 LT |
626 | } |
627 | server->m.time_out = server->m.time_out * HZ / 100; | |
628 | server->m.file_mode = (server->m.file_mode & S_IRWXUGO) | S_IFREG; | |
629 | server->m.dir_mode = (server->m.dir_mode & S_IRWXUGO) | S_IFDIR; | |
630 | ||
631 | #ifdef CONFIG_NCPFS_NLS | |
632 | /* load the default NLS charsets */ | |
633 | server->nls_vol = load_nls_default(); | |
634 | server->nls_io = load_nls_default(); | |
635 | #endif /* CONFIG_NCPFS_NLS */ | |
636 | ||
2e54eb96 | 637 | atomic_set(&server->dentry_ttl, 0); /* no caching */ |
1da177e4 LT |
638 | |
639 | INIT_LIST_HEAD(&server->tx.requests); | |
8e3f9045 | 640 | mutex_init(&server->rcv.creq_mutex); |
1da177e4 LT |
641 | server->tx.creq = NULL; |
642 | server->rcv.creq = NULL; | |
1da177e4 LT |
643 | |
644 | init_timer(&server->timeout_tm); | |
645 | #undef NCP_PACKET_SIZE | |
646 | #define NCP_PACKET_SIZE 131072 | |
647 | error = -ENOMEM; | |
648 | server->packet_size = NCP_PACKET_SIZE; | |
649 | server->packet = vmalloc(NCP_PACKET_SIZE); | |
650 | if (server->packet == NULL) | |
651 | goto out_nls; | |
c5f93cf1 PO |
652 | server->txbuf = vmalloc(NCP_PACKET_SIZE); |
653 | if (server->txbuf == NULL) | |
654 | goto out_packet; | |
655 | server->rxbuf = vmalloc(NCP_PACKET_SIZE); | |
656 | if (server->rxbuf == NULL) | |
657 | goto out_txbuf; | |
1da177e4 | 658 | |
2a4df5d3 PV |
659 | lock_sock(sock->sk); |
660 | server->data_ready = sock->sk->sk_data_ready; | |
661 | server->write_space = sock->sk->sk_write_space; | |
662 | server->error_report = sock->sk->sk_error_report; | |
663 | sock->sk->sk_user_data = server; | |
1da177e4 LT |
664 | sock->sk->sk_data_ready = ncp_tcp_data_ready; |
665 | sock->sk->sk_error_report = ncp_tcp_error_report; | |
666 | if (sock->type == SOCK_STREAM) { | |
667 | server->rcv.ptr = (unsigned char*)&server->rcv.buf; | |
668 | server->rcv.len = 10; | |
669 | server->rcv.state = 0; | |
c4028958 DH |
670 | INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc); |
671 | INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc); | |
1da177e4 LT |
672 | sock->sk->sk_write_space = ncp_tcp_write_space; |
673 | } else { | |
c4028958 DH |
674 | INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc); |
675 | INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc); | |
1da177e4 LT |
676 | server->timeout_tm.data = (unsigned long)server; |
677 | server->timeout_tm.function = ncpdgram_timeout_call; | |
678 | } | |
2a4df5d3 | 679 | release_sock(sock->sk); |
1da177e4 LT |
680 | |
681 | ncp_lock_server(server); | |
682 | error = ncp_connect(server); | |
683 | ncp_unlock_server(server); | |
684 | if (error < 0) | |
c5f93cf1 | 685 | goto out_rxbuf; |
d3b73ca1 | 686 | ncp_dbg(1, "NCP_SBP(sb) = %x\n", (int) NCP_SBP(sb)); |
1da177e4 LT |
687 | |
688 | error = -EMSGSIZE; /* -EREMOTESIDEINCOMPATIBLE */ | |
689 | #ifdef CONFIG_NCPFS_PACKET_SIGNING | |
690 | if (ncp_negotiate_size_and_options(server, default_bufsize, | |
691 | NCP_DEFAULT_OPTIONS, &(server->buffer_size), &options) == 0) | |
692 | { | |
693 | if (options != NCP_DEFAULT_OPTIONS) | |
694 | { | |
695 | if (ncp_negotiate_size_and_options(server, | |
696 | default_bufsize, | |
697 | options & 2, | |
698 | &(server->buffer_size), &options) != 0) | |
699 | ||
700 | { | |
701 | goto out_disconnect; | |
702 | } | |
703 | } | |
2e54eb96 | 704 | ncp_lock_server(server); |
1da177e4 LT |
705 | if (options & 2) |
706 | server->sign_wanted = 1; | |
2e54eb96 | 707 | ncp_unlock_server(server); |
1da177e4 LT |
708 | } |
709 | else | |
710 | #endif /* CONFIG_NCPFS_PACKET_SIGNING */ | |
711 | if (ncp_negotiate_buffersize(server, default_bufsize, | |
712 | &(server->buffer_size)) != 0) | |
713 | goto out_disconnect; | |
d3b73ca1 | 714 | ncp_dbg(1, "bufsize = %d\n", server->buffer_size); |
1da177e4 LT |
715 | |
716 | memset(&finfo, 0, sizeof(finfo)); | |
717 | finfo.i.attributes = aDIR; | |
718 | finfo.i.dataStreamSize = 0; /* ignored */ | |
719 | finfo.i.dirEntNum = 0; | |
720 | finfo.i.DosDirNum = 0; | |
721 | #ifdef CONFIG_NCPFS_SMALLDOS | |
722 | finfo.i.NSCreator = NW_NS_DOS; | |
723 | #endif | |
724 | finfo.volume = NCP_NUMBER_OF_VOLUMES; | |
725 | /* set dates of mountpoint to Jan 1, 1986; 00:00 */ | |
726 | finfo.i.creationTime = finfo.i.modifyTime | |
727 | = cpu_to_le16(0x0000); | |
728 | finfo.i.creationDate = finfo.i.modifyDate | |
729 | = finfo.i.lastAccessDate | |
730 | = cpu_to_le16(0x0C21); | |
731 | finfo.i.nameLen = 0; | |
732 | finfo.i.entryName[0] = '\0'; | |
733 | ||
734 | finfo.opened = 0; | |
735 | finfo.ino = 2; /* tradition */ | |
736 | ||
737 | server->name_space[finfo.volume] = NW_NS_DOS; | |
738 | ||
739 | error = -ENOMEM; | |
740 | root_inode = ncp_iget(sb, &finfo); | |
741 | if (!root_inode) | |
742 | goto out_disconnect; | |
d3b73ca1 | 743 | ncp_dbg(1, "root vol=%d\n", NCP_FINFO(root_inode)->volNumber); |
48fde701 | 744 | sb->s_root = d_make_root(root_inode); |
1da177e4 | 745 | if (!sb->s_root) |
48fde701 | 746 | goto out_disconnect; |
1da177e4 LT |
747 | return 0; |
748 | ||
1da177e4 LT |
749 | out_disconnect: |
750 | ncp_lock_server(server); | |
751 | ncp_disconnect(server); | |
752 | ncp_unlock_server(server); | |
c5f93cf1 | 753 | out_rxbuf: |
1da177e4 | 754 | ncp_stop_tasks(server); |
c5f93cf1 PO |
755 | vfree(server->rxbuf); |
756 | out_txbuf: | |
757 | vfree(server->txbuf); | |
758 | out_packet: | |
1da177e4 LT |
759 | vfree(server->packet); |
760 | out_nls: | |
761 | #ifdef CONFIG_NCPFS_NLS | |
762 | unload_nls(server->nls_io); | |
763 | unload_nls(server->nls_vol); | |
764 | #endif | |
2e54eb96 PV |
765 | mutex_destroy(&server->rcv.creq_mutex); |
766 | mutex_destroy(&server->root_setup_lock); | |
767 | mutex_destroy(&server->mutex); | |
1da177e4 LT |
768 | out_fput2: |
769 | if (server->info_filp) | |
770 | fput(server->info_filp); | |
f1970c73 | 771 | out_bdi: |
759c361e DH |
772 | bdi_destroy(&server->bdi); |
773 | out_fput: | |
1da177e4 LT |
774 | /* 23/12/1998 Marcin Dalecki <dalecki@cs.net.pl>: |
775 | * | |
e956b4b7 MW |
776 | * The previously used put_filp(ncp_filp); was bogus, since |
777 | * it doesn't perform proper unlocking. | |
1da177e4 LT |
778 | */ |
779 | fput(ncp_filp); | |
780 | out: | |
1de24126 | 781 | put_pid(data.wdog_pid); |
1da177e4 LT |
782 | sb->s_fs_info = NULL; |
783 | kfree(server); | |
784 | return error; | |
785 | } | |
786 | ||
1dcddd4a AV |
787 | static void delayed_free(struct rcu_head *p) |
788 | { | |
789 | struct ncp_server *server = container_of(p, struct ncp_server, rcu); | |
790 | #ifdef CONFIG_NCPFS_NLS | |
791 | /* unload the NLS charsets */ | |
792 | unload_nls(server->nls_vol); | |
793 | unload_nls(server->nls_io); | |
794 | #endif /* CONFIG_NCPFS_NLS */ | |
795 | kfree(server); | |
796 | } | |
797 | ||
1da177e4 LT |
798 | static void ncp_put_super(struct super_block *sb) |
799 | { | |
800 | struct ncp_server *server = NCP_SBP(sb); | |
801 | ||
802 | ncp_lock_server(server); | |
803 | ncp_disconnect(server); | |
804 | ncp_unlock_server(server); | |
805 | ||
806 | ncp_stop_tasks(server); | |
807 | ||
2e54eb96 PV |
808 | mutex_destroy(&server->rcv.creq_mutex); |
809 | mutex_destroy(&server->root_setup_lock); | |
810 | mutex_destroy(&server->mutex); | |
1da177e4 LT |
811 | |
812 | if (server->info_filp) | |
813 | fput(server->info_filp); | |
814 | fput(server->ncp_filp); | |
2154227a EB |
815 | kill_pid(server->m.wdog_pid, SIGTERM, 1); |
816 | put_pid(server->m.wdog_pid); | |
1da177e4 | 817 | |
f1970c73 | 818 | bdi_destroy(&server->bdi); |
44db77f3 PE |
819 | kfree(server->priv.data); |
820 | kfree(server->auth.object_name); | |
c5f93cf1 PO |
821 | vfree(server->rxbuf); |
822 | vfree(server->txbuf); | |
1da177e4 | 823 | vfree(server->packet); |
1dcddd4a | 824 | call_rcu(&server->rcu, delayed_free); |
1da177e4 LT |
825 | } |
826 | ||
726c3342 | 827 | static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf) |
1da177e4 LT |
828 | { |
829 | struct dentry* d; | |
830 | struct inode* i; | |
831 | struct ncp_inode_info* ni; | |
832 | struct ncp_server* s; | |
833 | struct ncp_volume_info vi; | |
726c3342 | 834 | struct super_block *sb = dentry->d_sb; |
1da177e4 LT |
835 | int err; |
836 | __u8 dh; | |
837 | ||
838 | d = sb->s_root; | |
839 | if (!d) { | |
840 | goto dflt; | |
841 | } | |
842 | i = d->d_inode; | |
843 | if (!i) { | |
844 | goto dflt; | |
845 | } | |
846 | ni = NCP_FINFO(i); | |
847 | if (!ni) { | |
848 | goto dflt; | |
849 | } | |
850 | s = NCP_SBP(sb); | |
851 | if (!s) { | |
852 | goto dflt; | |
853 | } | |
854 | if (!s->m.mounted_vol[0]) { | |
855 | goto dflt; | |
856 | } | |
857 | ||
858 | err = ncp_dirhandle_alloc(s, ni->volNumber, ni->DosDirNum, &dh); | |
859 | if (err) { | |
860 | goto dflt; | |
861 | } | |
862 | err = ncp_get_directory_info(s, dh, &vi); | |
863 | ncp_dirhandle_free(s, dh); | |
864 | if (err) { | |
865 | goto dflt; | |
866 | } | |
867 | buf->f_type = NCP_SUPER_MAGIC; | |
868 | buf->f_bsize = vi.sectors_per_block * 512; | |
869 | buf->f_blocks = vi.total_blocks; | |
870 | buf->f_bfree = vi.free_blocks; | |
871 | buf->f_bavail = vi.free_blocks; | |
872 | buf->f_files = vi.total_dir_entries; | |
873 | buf->f_ffree = vi.available_dir_entries; | |
874 | buf->f_namelen = 12; | |
875 | return 0; | |
876 | ||
877 | /* We cannot say how much disk space is left on a mounted | |
878 | NetWare Server, because free space is distributed over | |
879 | volumes, and the current user might have disk quotas. So | |
880 | free space is not that simple to determine. Our decision | |
881 | here is to err conservatively. */ | |
882 | ||
883 | dflt:; | |
884 | buf->f_type = NCP_SUPER_MAGIC; | |
885 | buf->f_bsize = NCP_BLOCK_SIZE; | |
886 | buf->f_blocks = 0; | |
887 | buf->f_bfree = 0; | |
888 | buf->f_bavail = 0; | |
889 | buf->f_namelen = 12; | |
890 | return 0; | |
891 | } | |
892 | ||
893 | int ncp_notify_change(struct dentry *dentry, struct iattr *attr) | |
894 | { | |
895 | struct inode *inode = dentry->d_inode; | |
896 | int result = 0; | |
897 | __le32 info_mask; | |
898 | struct nw_modify_dos_info info; | |
899 | struct ncp_server *server; | |
900 | ||
901 | result = -EIO; | |
902 | ||
1da177e4 | 903 | server = NCP_SERVER(inode); |
2e54eb96 | 904 | if (!server) /* How this could happen? */ |
1da177e4 LT |
905 | goto out; |
906 | ||
338b2f57 AV |
907 | result = -EPERM; |
908 | if (IS_DEADDIR(dentry->d_inode)) | |
909 | goto out; | |
910 | ||
1da177e4 LT |
911 | /* ageing the dentry to force validation */ |
912 | ncp_age_dentry(server, dentry); | |
913 | ||
914 | result = inode_change_ok(inode, attr); | |
915 | if (result < 0) | |
916 | goto out; | |
917 | ||
918 | result = -EPERM; | |
1ac7fd81 | 919 | if ((attr->ia_valid & ATTR_UID) && !uid_eq(attr->ia_uid, server->m.uid)) |
1da177e4 LT |
920 | goto out; |
921 | ||
1ac7fd81 | 922 | if ((attr->ia_valid & ATTR_GID) && !gid_eq(attr->ia_gid, server->m.gid)) |
1da177e4 LT |
923 | goto out; |
924 | ||
925 | if (((attr->ia_valid & ATTR_MODE) && | |
926 | (attr->ia_mode & | |
927 | ~(S_IFREG | S_IFDIR | S_IRWXUGO)))) | |
928 | goto out; | |
929 | ||
930 | info_mask = 0; | |
931 | memset(&info, 0, sizeof(info)); | |
932 | ||
933 | #if 1 | |
934 | if ((attr->ia_valid & ATTR_MODE) != 0) | |
935 | { | |
936 | umode_t newmode = attr->ia_mode; | |
937 | ||
938 | info_mask |= DM_ATTRIBUTES; | |
939 | ||
940 | if (S_ISDIR(inode->i_mode)) { | |
941 | newmode &= server->m.dir_mode; | |
942 | } else { | |
943 | #ifdef CONFIG_NCPFS_EXTRAS | |
944 | if (server->m.flags & NCP_MOUNT_EXTRAS) { | |
945 | /* any non-default execute bit set */ | |
946 | if (newmode & ~server->m.file_mode & S_IXUGO) | |
947 | info.attributes |= aSHARED | aSYSTEM; | |
948 | /* read for group/world and not in default file_mode */ | |
949 | else if (newmode & ~server->m.file_mode & S_IRUGO) | |
950 | info.attributes |= aSHARED; | |
951 | } else | |
952 | #endif | |
953 | newmode &= server->m.file_mode; | |
954 | } | |
955 | if (newmode & S_IWUGO) | |
956 | info.attributes &= ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT); | |
957 | else | |
958 | info.attributes |= (aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT); | |
959 | ||
960 | #ifdef CONFIG_NCPFS_NFS_NS | |
961 | if (ncp_is_nfs_extras(server, NCP_FINFO(inode)->volNumber)) { | |
962 | result = ncp_modify_nfs_info(server, | |
963 | NCP_FINFO(inode)->volNumber, | |
964 | NCP_FINFO(inode)->dirEntNum, | |
965 | attr->ia_mode, 0); | |
966 | if (result != 0) | |
967 | goto out; | |
968 | info.attributes &= ~(aSHARED | aSYSTEM); | |
969 | { | |
970 | /* mark partial success */ | |
971 | struct iattr tmpattr; | |
972 | ||
973 | tmpattr.ia_valid = ATTR_MODE; | |
974 | tmpattr.ia_mode = attr->ia_mode; | |
975 | ||
1025774c CH |
976 | setattr_copy(inode, &tmpattr); |
977 | mark_inode_dirty(inode); | |
1da177e4 LT |
978 | } |
979 | } | |
980 | #endif | |
981 | } | |
982 | #endif | |
983 | ||
984 | /* Do SIZE before attributes, otherwise mtime together with size does not work... | |
985 | */ | |
986 | if ((attr->ia_valid & ATTR_SIZE) != 0) { | |
987 | int written; | |
988 | ||
d3b73ca1 | 989 | ncp_dbg(1, "trying to change size to %ld\n", attr->ia_size); |
1da177e4 LT |
990 | |
991 | if ((result = ncp_make_open(inode, O_WRONLY)) < 0) { | |
992 | result = -EACCES; | |
993 | goto out; | |
994 | } | |
995 | ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle, | |
996 | attr->ia_size, 0, "", &written); | |
997 | ||
998 | /* According to ndir, the changes only take effect after | |
999 | closing the file */ | |
1000 | ncp_inode_close(inode); | |
1001 | result = ncp_make_closed(inode); | |
1002 | if (result) | |
1003 | goto out; | |
1025774c CH |
1004 | |
1005 | if (attr->ia_size != i_size_read(inode)) { | |
3e7a8069 | 1006 | truncate_setsize(inode, attr->ia_size); |
1025774c | 1007 | mark_inode_dirty(inode); |
1da177e4 LT |
1008 | } |
1009 | } | |
1010 | if ((attr->ia_valid & ATTR_CTIME) != 0) { | |
1011 | info_mask |= (DM_CREATE_TIME | DM_CREATE_DATE); | |
1012 | ncp_date_unix2dos(attr->ia_ctime.tv_sec, | |
1013 | &info.creationTime, &info.creationDate); | |
1014 | } | |
1015 | if ((attr->ia_valid & ATTR_MTIME) != 0) { | |
1016 | info_mask |= (DM_MODIFY_TIME | DM_MODIFY_DATE); | |
1017 | ncp_date_unix2dos(attr->ia_mtime.tv_sec, | |
1018 | &info.modifyTime, &info.modifyDate); | |
1019 | } | |
1020 | if ((attr->ia_valid & ATTR_ATIME) != 0) { | |
1021 | __le16 dummy; | |
1022 | info_mask |= (DM_LAST_ACCESS_DATE); | |
1023 | ncp_date_unix2dos(attr->ia_atime.tv_sec, | |
1024 | &dummy, &info.lastAccessDate); | |
1025 | } | |
1026 | if (info_mask != 0) { | |
1027 | result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode), | |
1028 | inode, info_mask, &info); | |
1029 | if (result != 0) { | |
1da177e4 LT |
1030 | if (info_mask == (DM_CREATE_TIME | DM_CREATE_DATE)) { |
1031 | /* NetWare seems not to allow this. I | |
1032 | do not know why. So, just tell the | |
1033 | user everything went fine. This is | |
1034 | a terrible hack, but I do not know | |
1035 | how to do this correctly. */ | |
1036 | result = 0; | |
1037 | } else | |
1038 | goto out; | |
1039 | } | |
1040 | #ifdef CONFIG_NCPFS_STRONG | |
1041 | if ((!result) && (info_mask & DM_ATTRIBUTES)) | |
1042 | NCP_FINFO(inode)->nwattr = info.attributes; | |
1043 | #endif | |
1044 | } | |
1025774c CH |
1045 | if (result) |
1046 | goto out; | |
1047 | ||
1048 | setattr_copy(inode, attr); | |
1049 | mark_inode_dirty(inode); | |
1050 | ||
1da177e4 | 1051 | out: |
2e54eb96 PV |
1052 | if (result > 0) |
1053 | result = -EACCES; | |
1da177e4 LT |
1054 | return result; |
1055 | } | |
1056 | ||
3c26ff6e AV |
1057 | static struct dentry *ncp_mount(struct file_system_type *fs_type, |
1058 | int flags, const char *dev_name, void *data) | |
1da177e4 | 1059 | { |
3c26ff6e | 1060 | return mount_nodev(fs_type, flags, data, ncp_fill_super); |
1da177e4 LT |
1061 | } |
1062 | ||
1063 | static struct file_system_type ncp_fs_type = { | |
1064 | .owner = THIS_MODULE, | |
1065 | .name = "ncpfs", | |
3c26ff6e | 1066 | .mount = ncp_mount, |
1da177e4 | 1067 | .kill_sb = kill_anon_super, |
564cd138 | 1068 | .fs_flags = FS_BINARY_MOUNTDATA, |
1da177e4 | 1069 | }; |
7f78e035 | 1070 | MODULE_ALIAS_FS("ncpfs"); |
1da177e4 LT |
1071 | |
1072 | static int __init init_ncp_fs(void) | |
1073 | { | |
1074 | int err; | |
d3b73ca1 | 1075 | ncp_dbg(1, "called\n"); |
1da177e4 | 1076 | |
1da177e4 LT |
1077 | err = init_inodecache(); |
1078 | if (err) | |
1079 | goto out1; | |
1080 | err = register_filesystem(&ncp_fs_type); | |
1081 | if (err) | |
1082 | goto out; | |
1083 | return 0; | |
1084 | out: | |
1085 | destroy_inodecache(); | |
1086 | out1: | |
1087 | return err; | |
1088 | } | |
1089 | ||
1090 | static void __exit exit_ncp_fs(void) | |
1091 | { | |
d3b73ca1 | 1092 | ncp_dbg(1, "called\n"); |
1da177e4 LT |
1093 | unregister_filesystem(&ncp_fs_type); |
1094 | destroy_inodecache(); | |
1da177e4 LT |
1095 | } |
1096 | ||
1097 | module_init(init_ncp_fs) | |
1098 | module_exit(exit_ncp_fs) | |
1099 | MODULE_LICENSE("GPL"); |