Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * dir.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, 1999 Wolfram Pienkoss for NLS | |
8 | * Modified 1999 Wolfram Pienkoss for directory caching | |
9 | * Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info | |
10 | * | |
11 | */ | |
12 | ||
1da177e4 LT |
13 | |
14 | #include <linux/time.h> | |
15 | #include <linux/errno.h> | |
16 | #include <linux/stat.h> | |
17 | #include <linux/kernel.h> | |
1da177e4 LT |
18 | #include <linux/vmalloc.h> |
19 | #include <linux/mm.h> | |
34286d66 | 20 | #include <linux/namei.h> |
1da177e4 LT |
21 | #include <asm/uaccess.h> |
22 | #include <asm/byteorder.h> | |
1da177e4 | 23 | |
32c419d9 | 24 | #include "ncp_fs.h" |
1da177e4 | 25 | |
76f582a8 | 26 | static void ncp_read_volume_list(struct file *, struct dir_context *, |
1da177e4 | 27 | struct ncp_cache_control *); |
76f582a8 | 28 | static void ncp_do_readdir(struct file *, struct dir_context *, |
1da177e4 LT |
29 | struct ncp_cache_control *); |
30 | ||
76f582a8 | 31 | static int ncp_readdir(struct file *, struct dir_context *); |
1da177e4 | 32 | |
ebfc3b49 | 33 | static int ncp_create(struct inode *, struct dentry *, umode_t, bool); |
00cd8dd3 | 34 | static struct dentry *ncp_lookup(struct inode *, struct dentry *, unsigned int); |
1da177e4 | 35 | static int ncp_unlink(struct inode *, struct dentry *); |
18bb1db3 | 36 | static int ncp_mkdir(struct inode *, struct dentry *, umode_t); |
1da177e4 LT |
37 | static int ncp_rmdir(struct inode *, struct dentry *); |
38 | static int ncp_rename(struct inode *, struct dentry *, | |
39 | struct inode *, struct dentry *); | |
40 | static int ncp_mknod(struct inode * dir, struct dentry *dentry, | |
1a67aafb | 41 | umode_t mode, dev_t rdev); |
1da177e4 LT |
42 | #if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS) |
43 | extern int ncp_symlink(struct inode *, struct dentry *, const char *); | |
44 | #else | |
45 | #define ncp_symlink NULL | |
46 | #endif | |
47 | ||
4b6f5d20 | 48 | const struct file_operations ncp_dir_operations = |
1da177e4 | 49 | { |
ca572727 | 50 | .llseek = generic_file_llseek, |
1da177e4 | 51 | .read = generic_read_dir, |
76f582a8 | 52 | .iterate = ncp_readdir, |
93d84b6d | 53 | .unlocked_ioctl = ncp_ioctl, |
54f67f63 PV |
54 | #ifdef CONFIG_COMPAT |
55 | .compat_ioctl = ncp_compat_ioctl, | |
56 | #endif | |
1da177e4 LT |
57 | }; |
58 | ||
92e1d5be | 59 | const struct inode_operations ncp_dir_inode_operations = |
1da177e4 LT |
60 | { |
61 | .create = ncp_create, | |
62 | .lookup = ncp_lookup, | |
63 | .unlink = ncp_unlink, | |
64 | .symlink = ncp_symlink, | |
65 | .mkdir = ncp_mkdir, | |
66 | .rmdir = ncp_rmdir, | |
67 | .mknod = ncp_mknod, | |
68 | .rename = ncp_rename, | |
69 | .setattr = ncp_notify_change, | |
70 | }; | |
71 | ||
72 | /* | |
73 | * Dentry operations routines | |
74 | */ | |
0b728e19 | 75 | static int ncp_lookup_validate(struct dentry *, unsigned int); |
da53be12 LT |
76 | static int ncp_hash_dentry(const struct dentry *, struct qstr *); |
77 | static int ncp_compare_dentry(const struct dentry *, const struct dentry *, | |
621e155a | 78 | unsigned int, const char *, const struct qstr *); |
fe15ce44 | 79 | static int ncp_delete_dentry(const struct dentry *); |
1da177e4 | 80 | |
0378c405 | 81 | const struct dentry_operations ncp_dentry_operations = |
1da177e4 LT |
82 | { |
83 | .d_revalidate = ncp_lookup_validate, | |
84 | .d_hash = ncp_hash_dentry, | |
85 | .d_compare = ncp_compare_dentry, | |
86 | .d_delete = ncp_delete_dentry, | |
87 | }; | |
88 | ||
2e54eb96 PV |
89 | #define ncp_namespace(i) (NCP_SERVER(i)->name_space[NCP_FINFO(i)->volNumber]) |
90 | ||
91 | static inline int ncp_preserve_entry_case(struct inode *i, __u32 nscreator) | |
92 | { | |
93 | #ifdef CONFIG_NCPFS_SMALLDOS | |
94 | int ns = ncp_namespace(i); | |
95 | ||
96 | if ((ns == NW_NS_DOS) | |
97 | #ifdef CONFIG_NCPFS_OS2_NS | |
98 | || ((ns == NW_NS_OS2) && (nscreator == NW_NS_DOS)) | |
99 | #endif /* CONFIG_NCPFS_OS2_NS */ | |
100 | ) | |
101 | return 0; | |
102 | #endif /* CONFIG_NCPFS_SMALLDOS */ | |
103 | return 1; | |
104 | } | |
105 | ||
106 | #define ncp_preserve_case(i) (ncp_namespace(i) != NW_NS_DOS) | |
107 | ||
621e155a | 108 | static inline int ncp_case_sensitive(const struct inode *i) |
2e54eb96 PV |
109 | { |
110 | #ifdef CONFIG_NCPFS_NFS_NS | |
621e155a | 111 | return ncp_namespace(i) == NW_NS_NFS; |
2e54eb96 PV |
112 | #else |
113 | return 0; | |
114 | #endif /* CONFIG_NCPFS_NFS_NS */ | |
115 | } | |
116 | ||
1da177e4 LT |
117 | /* |
118 | * Note: leave the hash unchanged if the directory | |
119 | * is case-sensitive. | |
da53be12 LT |
120 | * |
121 | * Accessing the parent inode can be racy under RCU pathwalking. | |
122 | * Use ACCESS_ONCE() to make sure we use _one_ particular inode, | |
123 | * the callers will handle races. | |
1da177e4 LT |
124 | */ |
125 | static int | |
da53be12 | 126 | ncp_hash_dentry(const struct dentry *dentry, struct qstr *this) |
1da177e4 | 127 | { |
da53be12 LT |
128 | struct inode *inode = ACCESS_ONCE(dentry->d_inode); |
129 | ||
130 | if (!inode) | |
131 | return 0; | |
132 | ||
b1e6a015 | 133 | if (!ncp_case_sensitive(inode)) { |
621e155a | 134 | struct super_block *sb = dentry->d_sb; |
2e54eb96 PV |
135 | struct nls_table *t; |
136 | unsigned long hash; | |
137 | int i; | |
1da177e4 | 138 | |
621e155a | 139 | t = NCP_IO_TABLE(sb); |
1da177e4 LT |
140 | hash = init_name_hash(); |
141 | for (i=0; i<this->len ; i++) | |
142 | hash = partial_name_hash(ncp_tolower(t, this->name[i]), | |
143 | hash); | |
144 | this->hash = end_name_hash(hash); | |
145 | } | |
146 | return 0; | |
147 | } | |
148 | ||
da53be12 LT |
149 | /* |
150 | * Accessing the parent inode can be racy under RCU pathwalking. | |
151 | * Use ACCESS_ONCE() to make sure we use _one_ particular inode, | |
152 | * the callers will handle races. | |
153 | */ | |
1da177e4 | 154 | static int |
da53be12 | 155 | ncp_compare_dentry(const struct dentry *parent, const struct dentry *dentry, |
621e155a | 156 | unsigned int len, const char *str, const struct qstr *name) |
1da177e4 | 157 | { |
da53be12 LT |
158 | struct inode *pinode; |
159 | ||
621e155a | 160 | if (len != name->len) |
1da177e4 LT |
161 | return 1; |
162 | ||
da53be12 LT |
163 | pinode = ACCESS_ONCE(parent->d_inode); |
164 | if (!pinode) | |
165 | return 1; | |
166 | ||
621e155a NP |
167 | if (ncp_case_sensitive(pinode)) |
168 | return strncmp(str, name->name, len); | |
1da177e4 | 169 | |
621e155a | 170 | return ncp_strnicmp(NCP_IO_TABLE(pinode->i_sb), str, name->name, len); |
1da177e4 LT |
171 | } |
172 | ||
173 | /* | |
174 | * This is the callback from dput() when d_count is going to 0. | |
175 | * We use this to unhash dentries with bad inodes. | |
176 | * Closing files can be safely postponed until iput() - it's done there anyway. | |
177 | */ | |
178 | static int | |
fe15ce44 | 179 | ncp_delete_dentry(const struct dentry * dentry) |
1da177e4 LT |
180 | { |
181 | struct inode *inode = dentry->d_inode; | |
182 | ||
183 | if (inode) { | |
184 | if (is_bad_inode(inode)) | |
185 | return 1; | |
186 | } else | |
187 | { | |
188 | /* N.B. Unhash negative dentries? */ | |
189 | } | |
190 | return 0; | |
191 | } | |
192 | ||
193 | static inline int | |
194 | ncp_single_volume(struct ncp_server *server) | |
195 | { | |
196 | return (server->m.mounted_vol[0] != '\0'); | |
197 | } | |
198 | ||
199 | static inline int ncp_is_server_root(struct inode *inode) | |
200 | { | |
201 | return (!ncp_single_volume(NCP_SERVER(inode)) && | |
202 | inode == inode->i_sb->s_root->d_inode); | |
203 | } | |
204 | ||
205 | ||
206 | /* | |
207 | * This is the callback when the dcache has a lookup hit. | |
208 | */ | |
209 | ||
210 | ||
211 | #ifdef CONFIG_NCPFS_STRONG | |
212 | /* try to delete a readonly file (NW R bit set) */ | |
213 | ||
214 | static int | |
215 | ncp_force_unlink(struct inode *dir, struct dentry* dentry) | |
216 | { | |
217 | int res=0x9c,res2; | |
218 | struct nw_modify_dos_info info; | |
219 | __le32 old_nwattr; | |
220 | struct inode *inode; | |
221 | ||
222 | memset(&info, 0, sizeof(info)); | |
223 | ||
224 | /* remove the Read-Only flag on the NW server */ | |
225 | inode = dentry->d_inode; | |
226 | ||
227 | old_nwattr = NCP_FINFO(inode)->nwattr; | |
228 | info.attributes = old_nwattr & ~(aRONLY|aDELETEINHIBIT|aRENAMEINHIBIT); | |
229 | res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(inode), inode, NULL, DM_ATTRIBUTES, &info); | |
230 | if (res2) | |
231 | goto leave_me; | |
232 | ||
233 | /* now try again the delete operation */ | |
234 | res = ncp_del_file_or_subdir2(NCP_SERVER(dir), dentry); | |
235 | ||
236 | if (res) /* delete failed, set R bit again */ | |
237 | { | |
238 | info.attributes = old_nwattr; | |
239 | res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(inode), inode, NULL, DM_ATTRIBUTES, &info); | |
240 | if (res2) | |
241 | goto leave_me; | |
242 | } | |
243 | leave_me: | |
244 | return(res); | |
245 | } | |
246 | #endif /* CONFIG_NCPFS_STRONG */ | |
247 | ||
248 | #ifdef CONFIG_NCPFS_STRONG | |
249 | static int | |
250 | ncp_force_rename(struct inode *old_dir, struct dentry* old_dentry, char *_old_name, | |
251 | struct inode *new_dir, struct dentry* new_dentry, char *_new_name) | |
252 | { | |
253 | struct nw_modify_dos_info info; | |
254 | int res=0x90,res2; | |
255 | struct inode *old_inode = old_dentry->d_inode; | |
256 | __le32 old_nwattr = NCP_FINFO(old_inode)->nwattr; | |
257 | __le32 new_nwattr = 0; /* shut compiler warning */ | |
258 | int old_nwattr_changed = 0; | |
259 | int new_nwattr_changed = 0; | |
260 | ||
261 | memset(&info, 0, sizeof(info)); | |
262 | ||
263 | /* remove the Read-Only flag on the NW server */ | |
264 | ||
265 | info.attributes = old_nwattr & ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT); | |
266 | res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(old_inode), old_inode, NULL, DM_ATTRIBUTES, &info); | |
267 | if (!res2) | |
268 | old_nwattr_changed = 1; | |
269 | if (new_dentry && new_dentry->d_inode) { | |
270 | new_nwattr = NCP_FINFO(new_dentry->d_inode)->nwattr; | |
271 | info.attributes = new_nwattr & ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT); | |
272 | res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(new_dir), new_dir, _new_name, DM_ATTRIBUTES, &info); | |
273 | if (!res2) | |
274 | new_nwattr_changed = 1; | |
275 | } | |
276 | /* now try again the rename operation */ | |
277 | /* but only if something really happened */ | |
278 | if (new_nwattr_changed || old_nwattr_changed) { | |
279 | res = ncp_ren_or_mov_file_or_subdir(NCP_SERVER(old_dir), | |
280 | old_dir, _old_name, | |
281 | new_dir, _new_name); | |
282 | } | |
283 | if (res) | |
284 | goto leave_me; | |
285 | /* file was successfully renamed, so: | |
286 | do not set attributes on old file - it no longer exists | |
287 | copy attributes from old file to new */ | |
288 | new_nwattr_changed = old_nwattr_changed; | |
289 | new_nwattr = old_nwattr; | |
290 | old_nwattr_changed = 0; | |
291 | ||
292 | leave_me:; | |
293 | if (old_nwattr_changed) { | |
294 | info.attributes = old_nwattr; | |
295 | res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(old_inode), old_inode, NULL, DM_ATTRIBUTES, &info); | |
296 | /* ignore errors */ | |
297 | } | |
298 | if (new_nwattr_changed) { | |
299 | info.attributes = new_nwattr; | |
300 | res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(new_dir), new_dir, _new_name, DM_ATTRIBUTES, &info); | |
301 | /* ignore errors */ | |
302 | } | |
303 | return(res); | |
304 | } | |
305 | #endif /* CONFIG_NCPFS_STRONG */ | |
306 | ||
307 | ||
308 | static int | |
0b728e19 | 309 | ncp_lookup_validate(struct dentry *dentry, unsigned int flags) |
1da177e4 LT |
310 | { |
311 | struct ncp_server *server; | |
312 | struct dentry *parent; | |
313 | struct inode *dir; | |
314 | struct ncp_entry_info finfo; | |
315 | int res, val = 0, len; | |
316 | __u8 __name[NCP_MAXPATHLEN + 1]; | |
317 | ||
0378c405 AV |
318 | if (dentry == dentry->d_sb->s_root) |
319 | return 1; | |
320 | ||
0b728e19 | 321 | if (flags & LOOKUP_RCU) |
34286d66 NP |
322 | return -ECHILD; |
323 | ||
1da177e4 LT |
324 | parent = dget_parent(dentry); |
325 | dir = parent->d_inode; | |
326 | ||
327 | if (!dentry->d_inode) | |
328 | goto finished; | |
329 | ||
330 | server = NCP_SERVER(dir); | |
331 | ||
1da177e4 LT |
332 | /* |
333 | * Inspired by smbfs: | |
334 | * The default validation is based on dentry age: | |
335 | * We set the max age at mount time. (But each | |
336 | * successful server lookup renews the timestamp.) | |
337 | */ | |
338 | val = NCP_TEST_AGE(server, dentry); | |
339 | if (val) | |
340 | goto finished; | |
341 | ||
84eb3532 AV |
342 | DDPRINTK("ncp_lookup_validate: %pd2 not valid, age=%ld, server lookup\n", |
343 | dentry, NCP_GET_AGE(dentry)); | |
1da177e4 LT |
344 | |
345 | len = sizeof(__name); | |
346 | if (ncp_is_server_root(dir)) { | |
347 | res = ncp_io2vol(server, __name, &len, dentry->d_name.name, | |
348 | dentry->d_name.len, 1); | |
2e54eb96 | 349 | if (!res) { |
1da177e4 | 350 | res = ncp_lookup_volume(server, __name, &(finfo.i)); |
2e54eb96 PV |
351 | if (!res) |
352 | ncp_update_known_namespace(server, finfo.i.volNumber, NULL); | |
353 | } | |
1da177e4 LT |
354 | } else { |
355 | res = ncp_io2vol(server, __name, &len, dentry->d_name.name, | |
356 | dentry->d_name.len, !ncp_preserve_case(dir)); | |
357 | if (!res) | |
358 | res = ncp_obtain_info(server, dir, __name, &(finfo.i)); | |
359 | } | |
360 | finfo.volume = finfo.i.volNumber; | |
84eb3532 AV |
361 | DDPRINTK("ncp_lookup_validate: looked for %pd/%s, res=%d\n", |
362 | dentry->d_parent, __name, res); | |
1da177e4 LT |
363 | /* |
364 | * If we didn't find it, or if it has a different dirEntNum to | |
365 | * what we remember, it's not valid any more. | |
366 | */ | |
367 | if (!res) { | |
2e54eb96 PV |
368 | struct inode *inode = dentry->d_inode; |
369 | ||
370 | mutex_lock(&inode->i_mutex); | |
371 | if (finfo.i.dirEntNum == NCP_FINFO(inode)->dirEntNum) { | |
1da177e4 LT |
372 | ncp_new_dentry(dentry); |
373 | val=1; | |
374 | } else | |
375 | DDPRINTK("ncp_lookup_validate: found, but dirEntNum changed\n"); | |
376 | ||
2e54eb96 PV |
377 | ncp_update_inode2(inode, &finfo); |
378 | mutex_unlock(&inode->i_mutex); | |
1da177e4 LT |
379 | } |
380 | ||
381 | finished: | |
382 | DDPRINTK("ncp_lookup_validate: result=%d\n", val); | |
383 | dput(parent); | |
384 | return val; | |
385 | } | |
386 | ||
1da177e4 LT |
387 | static struct dentry * |
388 | ncp_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos) | |
389 | { | |
390 | struct dentry *dent = dentry; | |
391 | struct list_head *next; | |
392 | ||
393 | if (d_validate(dent, parent)) { | |
394 | if (dent->d_name.len <= NCP_MAXPATHLEN && | |
395 | (unsigned long)dent->d_fsdata == fpos) { | |
396 | if (!dent->d_inode) { | |
397 | dput(dent); | |
398 | dent = NULL; | |
399 | } | |
400 | return dent; | |
401 | } | |
402 | dput(dent); | |
403 | } | |
404 | ||
405 | /* If a pointer is invalid, we search the dentry. */ | |
2fd6b7f5 | 406 | spin_lock(&parent->d_lock); |
1da177e4 LT |
407 | next = parent->d_subdirs.next; |
408 | while (next != &parent->d_subdirs) { | |
5160ee6f | 409 | dent = list_entry(next, struct dentry, d_u.d_child); |
1da177e4 LT |
410 | if ((unsigned long)dent->d_fsdata == fpos) { |
411 | if (dent->d_inode) | |
dc0474be | 412 | dget(dent); |
1da177e4 LT |
413 | else |
414 | dent = NULL; | |
2fd6b7f5 | 415 | spin_unlock(&parent->d_lock); |
1da177e4 LT |
416 | goto out; |
417 | } | |
418 | next = next->next; | |
419 | } | |
2fd6b7f5 | 420 | spin_unlock(&parent->d_lock); |
1da177e4 LT |
421 | return NULL; |
422 | ||
423 | out: | |
424 | return dent; | |
425 | } | |
426 | ||
427 | static time_t ncp_obtain_mtime(struct dentry *dentry) | |
428 | { | |
429 | struct inode *inode = dentry->d_inode; | |
430 | struct ncp_server *server = NCP_SERVER(inode); | |
431 | struct nw_info_struct i; | |
432 | ||
433 | if (!ncp_conn_valid(server) || ncp_is_server_root(inode)) | |
434 | return 0; | |
435 | ||
436 | if (ncp_obtain_info(server, inode, NULL, &i)) | |
437 | return 0; | |
438 | ||
439 | return ncp_date_dos2unix(i.modifyTime, i.modifyDate); | |
440 | } | |
441 | ||
76f582a8 | 442 | static int ncp_readdir(struct file *file, struct dir_context *ctx) |
1da177e4 | 443 | { |
76f582a8 | 444 | struct dentry *dentry = file->f_path.dentry; |
1da177e4 LT |
445 | struct inode *inode = dentry->d_inode; |
446 | struct page *page = NULL; | |
447 | struct ncp_server *server = NCP_SERVER(inode); | |
448 | union ncp_dir_cache *cache = NULL; | |
449 | struct ncp_cache_control ctl; | |
450 | int result, mtime_valid = 0; | |
451 | time_t mtime = 0; | |
452 | ||
1da177e4 LT |
453 | ctl.page = NULL; |
454 | ctl.cache = NULL; | |
455 | ||
84eb3532 | 456 | DDPRINTK("ncp_readdir: reading %pD2, pos=%d\n", file, |
76f582a8 | 457 | (int) ctx->pos); |
1da177e4 LT |
458 | |
459 | result = -EIO; | |
2e54eb96 | 460 | /* Do not generate '.' and '..' when server is dead. */ |
1da177e4 LT |
461 | if (!ncp_conn_valid(server)) |
462 | goto out; | |
463 | ||
464 | result = 0; | |
76f582a8 AV |
465 | if (!dir_emit_dots(file, ctx)) |
466 | goto out; | |
1da177e4 LT |
467 | |
468 | page = grab_cache_page(&inode->i_data, 0); | |
469 | if (!page) | |
470 | goto read_really; | |
471 | ||
472 | ctl.cache = cache = kmap(page); | |
473 | ctl.head = cache->head; | |
474 | ||
475 | if (!PageUptodate(page) || !ctl.head.eof) | |
476 | goto init_cache; | |
477 | ||
76f582a8 | 478 | if (ctx->pos == 2) { |
1da177e4 LT |
479 | if (jiffies - ctl.head.time >= NCP_MAX_AGE(server)) |
480 | goto init_cache; | |
481 | ||
482 | mtime = ncp_obtain_mtime(dentry); | |
483 | mtime_valid = 1; | |
484 | if ((!mtime) || (mtime != ctl.head.mtime)) | |
485 | goto init_cache; | |
486 | } | |
487 | ||
76f582a8 | 488 | if (ctx->pos > ctl.head.end) |
1da177e4 LT |
489 | goto finished; |
490 | ||
76f582a8 | 491 | ctl.fpos = ctx->pos + (NCP_DIRCACHE_START - 2); |
1da177e4 LT |
492 | ctl.ofs = ctl.fpos / NCP_DIRCACHE_SIZE; |
493 | ctl.idx = ctl.fpos % NCP_DIRCACHE_SIZE; | |
494 | ||
495 | for (;;) { | |
496 | if (ctl.ofs != 0) { | |
497 | ctl.page = find_lock_page(&inode->i_data, ctl.ofs); | |
498 | if (!ctl.page) | |
499 | goto invalid_cache; | |
500 | ctl.cache = kmap(ctl.page); | |
501 | if (!PageUptodate(ctl.page)) | |
502 | goto invalid_cache; | |
503 | } | |
504 | while (ctl.idx < NCP_DIRCACHE_SIZE) { | |
505 | struct dentry *dent; | |
76f582a8 | 506 | bool over; |
1da177e4 LT |
507 | |
508 | dent = ncp_dget_fpos(ctl.cache->dentry[ctl.idx], | |
76f582a8 | 509 | dentry, ctx->pos); |
1da177e4 LT |
510 | if (!dent) |
511 | goto invalid_cache; | |
76f582a8 AV |
512 | over = !dir_emit(ctx, dent->d_name.name, |
513 | dent->d_name.len, | |
1da177e4 LT |
514 | dent->d_inode->i_ino, DT_UNKNOWN); |
515 | dput(dent); | |
76f582a8 | 516 | if (over) |
1da177e4 | 517 | goto finished; |
76f582a8 | 518 | ctx->pos += 1; |
1da177e4 | 519 | ctl.idx += 1; |
76f582a8 | 520 | if (ctx->pos > ctl.head.end) |
1da177e4 LT |
521 | goto finished; |
522 | } | |
523 | if (ctl.page) { | |
524 | kunmap(ctl.page); | |
525 | SetPageUptodate(ctl.page); | |
526 | unlock_page(ctl.page); | |
527 | page_cache_release(ctl.page); | |
528 | ctl.page = NULL; | |
529 | } | |
530 | ctl.idx = 0; | |
531 | ctl.ofs += 1; | |
532 | } | |
533 | invalid_cache: | |
534 | if (ctl.page) { | |
535 | kunmap(ctl.page); | |
536 | unlock_page(ctl.page); | |
537 | page_cache_release(ctl.page); | |
538 | ctl.page = NULL; | |
539 | } | |
540 | ctl.cache = cache; | |
541 | init_cache: | |
542 | ncp_invalidate_dircache_entries(dentry); | |
543 | if (!mtime_valid) { | |
544 | mtime = ncp_obtain_mtime(dentry); | |
545 | mtime_valid = 1; | |
546 | } | |
547 | ctl.head.mtime = mtime; | |
548 | ctl.head.time = jiffies; | |
549 | ctl.head.eof = 0; | |
550 | ctl.fpos = 2; | |
551 | ctl.ofs = 0; | |
552 | ctl.idx = NCP_DIRCACHE_START; | |
553 | ctl.filled = 0; | |
554 | ctl.valid = 1; | |
555 | read_really: | |
556 | if (ncp_is_server_root(inode)) { | |
76f582a8 | 557 | ncp_read_volume_list(file, ctx, &ctl); |
1da177e4 | 558 | } else { |
76f582a8 | 559 | ncp_do_readdir(file, ctx, &ctl); |
1da177e4 LT |
560 | } |
561 | ctl.head.end = ctl.fpos - 1; | |
562 | ctl.head.eof = ctl.valid; | |
563 | finished: | |
2e54eb96 PV |
564 | if (ctl.page) { |
565 | kunmap(ctl.page); | |
566 | SetPageUptodate(ctl.page); | |
567 | unlock_page(ctl.page); | |
568 | page_cache_release(ctl.page); | |
569 | } | |
1da177e4 LT |
570 | if (page) { |
571 | cache->head = ctl.head; | |
572 | kunmap(page); | |
573 | SetPageUptodate(page); | |
574 | unlock_page(page); | |
575 | page_cache_release(page); | |
576 | } | |
1da177e4 | 577 | out: |
1da177e4 LT |
578 | return result; |
579 | } | |
580 | ||
581 | static int | |
76f582a8 | 582 | ncp_fill_cache(struct file *file, struct dir_context *ctx, |
2e54eb96 PV |
583 | struct ncp_cache_control *ctrl, struct ncp_entry_info *entry, |
584 | int inval_childs) | |
1da177e4 | 585 | { |
76f582a8 | 586 | struct dentry *newdent, *dentry = file->f_path.dentry; |
2e54eb96 | 587 | struct inode *dir = dentry->d_inode; |
1da177e4 LT |
588 | struct ncp_cache_control ctl = *ctrl; |
589 | struct qstr qname; | |
590 | int valid = 0; | |
591 | int hashed = 0; | |
592 | ino_t ino = 0; | |
593 | __u8 __name[NCP_MAXPATHLEN + 1]; | |
594 | ||
595 | qname.len = sizeof(__name); | |
2e54eb96 | 596 | if (ncp_vol2io(NCP_SERVER(dir), __name, &qname.len, |
1da177e4 | 597 | entry->i.entryName, entry->i.nameLen, |
2e54eb96 | 598 | !ncp_preserve_entry_case(dir, entry->i.NSCreator))) |
1da177e4 LT |
599 | return 1; /* I'm not sure */ |
600 | ||
601 | qname.name = __name; | |
1da177e4 | 602 | |
4f522a24 AV |
603 | newdent = d_hash_and_lookup(dentry, &qname); |
604 | if (unlikely(IS_ERR(newdent))) | |
605 | goto end_advance; | |
1da177e4 LT |
606 | if (!newdent) { |
607 | newdent = d_alloc(dentry, &qname); | |
608 | if (!newdent) | |
609 | goto end_advance; | |
610 | } else { | |
611 | hashed = 1; | |
2e54eb96 PV |
612 | |
613 | /* If case sensitivity changed for this volume, all entries below this one | |
614 | should be thrown away. This entry itself is not affected, as its case | |
615 | sensitivity is controlled by its own parent. */ | |
616 | if (inval_childs) | |
617 | shrink_dcache_parent(newdent); | |
618 | ||
619 | /* | |
fb2d5b86 NP |
620 | * NetWare's OS2 namespace is case preserving yet case |
621 | * insensitive. So we update dentry's name as received from | |
622 | * server. Parent dir's i_mutex is locked because we're in | |
623 | * readdir. | |
2e54eb96 | 624 | */ |
fb2d5b86 | 625 | dentry_update_name_case(newdent, &qname); |
1da177e4 LT |
626 | } |
627 | ||
628 | if (!newdent->d_inode) { | |
2e54eb96 PV |
629 | struct inode *inode; |
630 | ||
1da177e4 | 631 | entry->opened = 0; |
2e54eb96 PV |
632 | entry->ino = iunique(dir->i_sb, 2); |
633 | inode = ncp_iget(dir->i_sb, entry); | |
634 | if (inode) { | |
2e54eb96 | 635 | d_instantiate(newdent, inode); |
1da177e4 LT |
636 | if (!hashed) |
637 | d_rehash(newdent); | |
638 | } | |
2e54eb96 PV |
639 | } else { |
640 | struct inode *inode = newdent->d_inode; | |
641 | ||
fb2d5b86 | 642 | mutex_lock_nested(&inode->i_mutex, I_MUTEX_CHILD); |
2e54eb96 PV |
643 | ncp_update_inode2(inode, entry); |
644 | mutex_unlock(&inode->i_mutex); | |
645 | } | |
1da177e4 LT |
646 | |
647 | if (newdent->d_inode) { | |
648 | ino = newdent->d_inode->i_ino; | |
649 | newdent->d_fsdata = (void *) ctl.fpos; | |
650 | ncp_new_dentry(newdent); | |
651 | } | |
652 | ||
653 | if (ctl.idx >= NCP_DIRCACHE_SIZE) { | |
654 | if (ctl.page) { | |
655 | kunmap(ctl.page); | |
656 | SetPageUptodate(ctl.page); | |
657 | unlock_page(ctl.page); | |
658 | page_cache_release(ctl.page); | |
659 | } | |
660 | ctl.cache = NULL; | |
661 | ctl.idx -= NCP_DIRCACHE_SIZE; | |
662 | ctl.ofs += 1; | |
2e54eb96 | 663 | ctl.page = grab_cache_page(&dir->i_data, ctl.ofs); |
1da177e4 LT |
664 | if (ctl.page) |
665 | ctl.cache = kmap(ctl.page); | |
666 | } | |
667 | if (ctl.cache) { | |
668 | ctl.cache->dentry[ctl.idx] = newdent; | |
669 | valid = 1; | |
670 | } | |
671 | dput(newdent); | |
672 | end_advance: | |
673 | if (!valid) | |
674 | ctl.valid = 0; | |
76f582a8 | 675 | if (!ctl.filled && (ctl.fpos == ctx->pos)) { |
1da177e4 | 676 | if (!ino) |
2e54eb96 | 677 | ino = iunique(dir->i_sb, 2); |
76f582a8 AV |
678 | ctl.filled = !dir_emit(ctx, qname.name, qname.len, |
679 | ino, DT_UNKNOWN); | |
1da177e4 | 680 | if (!ctl.filled) |
76f582a8 | 681 | ctx->pos += 1; |
1da177e4 LT |
682 | } |
683 | ctl.fpos += 1; | |
684 | ctl.idx += 1; | |
685 | *ctrl = ctl; | |
686 | return (ctl.valid || !ctl.filled); | |
687 | } | |
688 | ||
689 | static void | |
76f582a8 | 690 | ncp_read_volume_list(struct file *file, struct dir_context *ctx, |
1da177e4 LT |
691 | struct ncp_cache_control *ctl) |
692 | { | |
76f582a8 | 693 | struct dentry *dentry = file->f_path.dentry; |
1da177e4 LT |
694 | struct inode *inode = dentry->d_inode; |
695 | struct ncp_server *server = NCP_SERVER(inode); | |
696 | struct ncp_volume_info info; | |
697 | struct ncp_entry_info entry; | |
698 | int i; | |
699 | ||
700 | DPRINTK("ncp_read_volume_list: pos=%ld\n", | |
76f582a8 | 701 | (unsigned long) ctx->pos); |
1da177e4 LT |
702 | |
703 | for (i = 0; i < NCP_NUMBER_OF_VOLUMES; i++) { | |
2e54eb96 | 704 | int inval_dentry; |
1da177e4 LT |
705 | |
706 | if (ncp_get_volume_info_with_number(server, i, &info) != 0) | |
707 | return; | |
708 | if (!strlen(info.volume_name)) | |
709 | continue; | |
710 | ||
711 | DPRINTK("ncp_read_volume_list: found vol: %s\n", | |
712 | info.volume_name); | |
713 | ||
714 | if (ncp_lookup_volume(server, info.volume_name, | |
715 | &entry.i)) { | |
716 | DPRINTK("ncpfs: could not lookup vol %s\n", | |
717 | info.volume_name); | |
718 | continue; | |
719 | } | |
2e54eb96 | 720 | inval_dentry = ncp_update_known_namespace(server, entry.i.volNumber, NULL); |
1da177e4 | 721 | entry.volume = entry.i.volNumber; |
76f582a8 | 722 | if (!ncp_fill_cache(file, ctx, ctl, &entry, inval_dentry)) |
1da177e4 LT |
723 | return; |
724 | } | |
725 | } | |
726 | ||
727 | static void | |
76f582a8 | 728 | ncp_do_readdir(struct file *file, struct dir_context *ctx, |
1da177e4 LT |
729 | struct ncp_cache_control *ctl) |
730 | { | |
76f582a8 | 731 | struct dentry *dentry = file->f_path.dentry; |
1da177e4 LT |
732 | struct inode *dir = dentry->d_inode; |
733 | struct ncp_server *server = NCP_SERVER(dir); | |
734 | struct nw_search_sequence seq; | |
735 | struct ncp_entry_info entry; | |
736 | int err; | |
737 | void* buf; | |
738 | int more; | |
739 | size_t bufsize; | |
740 | ||
84eb3532 | 741 | DPRINTK("ncp_do_readdir: %pD2, fpos=%ld\n", file, |
76f582a8 | 742 | (unsigned long) ctx->pos); |
84eb3532 AV |
743 | PPRINTK("ncp_do_readdir: init %pD, volnum=%d, dirent=%u\n", |
744 | file, NCP_FINFO(dir)->volNumber, NCP_FINFO(dir)->dirEntNum); | |
1da177e4 LT |
745 | |
746 | err = ncp_initialize_search(server, dir, &seq); | |
747 | if (err) { | |
748 | DPRINTK("ncp_do_readdir: init failed, err=%d\n", err); | |
749 | return; | |
750 | } | |
1da177e4 LT |
751 | /* We MUST NOT use server->buffer_size handshaked with server if we are |
752 | using UDP, as for UDP server uses max. buffer size determined by | |
753 | MTU, and for TCP server uses hardwired value 65KB (== 66560 bytes). | |
754 | So we use 128KB, just to be sure, as there is no way how to know | |
755 | this value in advance. */ | |
756 | bufsize = 131072; | |
757 | buf = vmalloc(bufsize); | |
758 | if (!buf) | |
759 | return; | |
760 | do { | |
761 | int cnt; | |
762 | char* rpl; | |
763 | size_t rpls; | |
764 | ||
765 | err = ncp_search_for_fileset(server, &seq, &more, &cnt, buf, bufsize, &rpl, &rpls); | |
766 | if (err) /* Error */ | |
767 | break; | |
768 | if (!cnt) /* prevent endless loop */ | |
769 | break; | |
770 | while (cnt--) { | |
771 | size_t onerpl; | |
772 | ||
773 | if (rpls < offsetof(struct nw_info_struct, entryName)) | |
774 | break; /* short packet */ | |
775 | ncp_extract_file_info(rpl, &entry.i); | |
776 | onerpl = offsetof(struct nw_info_struct, entryName) + entry.i.nameLen; | |
777 | if (rpls < onerpl) | |
778 | break; /* short packet */ | |
779 | (void)ncp_obtain_nfs_info(server, &entry.i); | |
780 | rpl += onerpl; | |
781 | rpls -= onerpl; | |
782 | entry.volume = entry.i.volNumber; | |
76f582a8 | 783 | if (!ncp_fill_cache(file, ctx, ctl, &entry, 0)) |
1da177e4 LT |
784 | break; |
785 | } | |
786 | } while (more); | |
787 | vfree(buf); | |
1da177e4 LT |
788 | return; |
789 | } | |
790 | ||
791 | int ncp_conn_logged_in(struct super_block *sb) | |
792 | { | |
793 | struct ncp_server* server = NCP_SBP(sb); | |
794 | int result; | |
795 | ||
796 | if (ncp_single_volume(server)) { | |
797 | int len; | |
798 | struct dentry* dent; | |
799 | __u32 volNumber; | |
800 | __le32 dirEntNum; | |
801 | __le32 DosDirNum; | |
802 | __u8 __name[NCP_MAXPATHLEN + 1]; | |
803 | ||
804 | len = sizeof(__name); | |
805 | result = ncp_io2vol(server, __name, &len, server->m.mounted_vol, | |
806 | strlen(server->m.mounted_vol), 1); | |
807 | if (result) | |
808 | goto out; | |
809 | result = -ENOENT; | |
810 | if (ncp_get_volume_root(server, __name, &volNumber, &dirEntNum, &DosDirNum)) { | |
811 | PPRINTK("ncp_conn_logged_in: %s not found\n", | |
812 | server->m.mounted_vol); | |
813 | goto out; | |
814 | } | |
815 | dent = sb->s_root; | |
816 | if (dent) { | |
817 | struct inode* ino = dent->d_inode; | |
818 | if (ino) { | |
2e54eb96 | 819 | ncp_update_known_namespace(server, volNumber, NULL); |
1da177e4 LT |
820 | NCP_FINFO(ino)->volNumber = volNumber; |
821 | NCP_FINFO(ino)->dirEntNum = dirEntNum; | |
822 | NCP_FINFO(ino)->DosDirNum = DosDirNum; | |
2e54eb96 | 823 | result = 0; |
1da177e4 LT |
824 | } else { |
825 | DPRINTK("ncpfs: sb->s_root->d_inode == NULL!\n"); | |
826 | } | |
827 | } else { | |
828 | DPRINTK("ncpfs: sb->s_root == NULL!\n"); | |
829 | } | |
2e54eb96 PV |
830 | } else |
831 | result = 0; | |
1da177e4 LT |
832 | |
833 | out: | |
834 | return result; | |
835 | } | |
836 | ||
00cd8dd3 | 837 | static struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) |
1da177e4 LT |
838 | { |
839 | struct ncp_server *server = NCP_SERVER(dir); | |
840 | struct inode *inode = NULL; | |
841 | struct ncp_entry_info finfo; | |
842 | int error, res, len; | |
843 | __u8 __name[NCP_MAXPATHLEN + 1]; | |
844 | ||
1da177e4 LT |
845 | error = -EIO; |
846 | if (!ncp_conn_valid(server)) | |
847 | goto finished; | |
848 | ||
84eb3532 | 849 | PPRINTK("ncp_lookup: server lookup for %pd2\n", dentry); |
1da177e4 LT |
850 | |
851 | len = sizeof(__name); | |
852 | if (ncp_is_server_root(dir)) { | |
853 | res = ncp_io2vol(server, __name, &len, dentry->d_name.name, | |
854 | dentry->d_name.len, 1); | |
855 | if (!res) | |
856 | res = ncp_lookup_volume(server, __name, &(finfo.i)); | |
2e54eb96 PV |
857 | if (!res) |
858 | ncp_update_known_namespace(server, finfo.i.volNumber, NULL); | |
1da177e4 LT |
859 | } else { |
860 | res = ncp_io2vol(server, __name, &len, dentry->d_name.name, | |
861 | dentry->d_name.len, !ncp_preserve_case(dir)); | |
862 | if (!res) | |
863 | res = ncp_obtain_info(server, dir, __name, &(finfo.i)); | |
864 | } | |
84eb3532 | 865 | PPRINTK("ncp_lookup: looked for %pd2, res=%d\n", dentry, res); |
1da177e4 LT |
866 | /* |
867 | * If we didn't find an entry, make a negative dentry. | |
868 | */ | |
869 | if (res) | |
870 | goto add_entry; | |
871 | ||
872 | /* | |
873 | * Create an inode for the entry. | |
874 | */ | |
875 | finfo.opened = 0; | |
876 | finfo.ino = iunique(dir->i_sb, 2); | |
877 | finfo.volume = finfo.i.volNumber; | |
878 | error = -EACCES; | |
879 | inode = ncp_iget(dir->i_sb, &finfo); | |
880 | ||
881 | if (inode) { | |
882 | ncp_new_dentry(dentry); | |
883 | add_entry: | |
1da177e4 LT |
884 | d_add(dentry, inode); |
885 | error = 0; | |
886 | } | |
887 | ||
888 | finished: | |
889 | PPRINTK("ncp_lookup: result=%d\n", error); | |
1da177e4 LT |
890 | return ERR_PTR(error); |
891 | } | |
892 | ||
893 | /* | |
894 | * This code is common to create, mkdir, and mknod. | |
895 | */ | |
896 | static int ncp_instantiate(struct inode *dir, struct dentry *dentry, | |
897 | struct ncp_entry_info *finfo) | |
898 | { | |
899 | struct inode *inode; | |
900 | int error = -EINVAL; | |
901 | ||
902 | finfo->ino = iunique(dir->i_sb, 2); | |
903 | inode = ncp_iget(dir->i_sb, finfo); | |
904 | if (!inode) | |
905 | goto out_close; | |
906 | d_instantiate(dentry,inode); | |
907 | error = 0; | |
908 | out: | |
909 | return error; | |
910 | ||
911 | out_close: | |
84eb3532 | 912 | PPRINTK("ncp_instantiate: %pd2 failed, closing file\n", dentry); |
1da177e4 LT |
913 | ncp_close_file(NCP_SERVER(dir), finfo->file_handle); |
914 | goto out; | |
915 | } | |
916 | ||
5eee25ca | 917 | int ncp_create_new(struct inode *dir, struct dentry *dentry, umode_t mode, |
1da177e4 LT |
918 | dev_t rdev, __le32 attributes) |
919 | { | |
920 | struct ncp_server *server = NCP_SERVER(dir); | |
921 | struct ncp_entry_info finfo; | |
922 | int error, result, len; | |
923 | int opmode; | |
924 | __u8 __name[NCP_MAXPATHLEN + 1]; | |
925 | ||
84eb3532 | 926 | PPRINTK("ncp_create_new: creating %pd2, mode=%hx\n", dentry, mode); |
1da177e4 | 927 | |
1da177e4 LT |
928 | ncp_age_dentry(server, dentry); |
929 | len = sizeof(__name); | |
930 | error = ncp_io2vol(server, __name, &len, dentry->d_name.name, | |
931 | dentry->d_name.len, !ncp_preserve_case(dir)); | |
932 | if (error) | |
933 | goto out; | |
934 | ||
935 | error = -EACCES; | |
936 | ||
937 | if (S_ISREG(mode) && | |
938 | (server->m.flags & NCP_MOUNT_EXTRAS) && | |
939 | (mode & S_IXUGO)) | |
940 | attributes |= aSYSTEM | aSHARED; | |
941 | ||
942 | result = ncp_open_create_file_or_subdir(server, dir, __name, | |
943 | OC_MODE_CREATE | OC_MODE_OPEN | OC_MODE_REPLACE, | |
944 | attributes, AR_READ | AR_WRITE, &finfo); | |
945 | opmode = O_RDWR; | |
946 | if (result) { | |
947 | result = ncp_open_create_file_or_subdir(server, dir, __name, | |
948 | OC_MODE_CREATE | OC_MODE_OPEN | OC_MODE_REPLACE, | |
949 | attributes, AR_WRITE, &finfo); | |
950 | if (result) { | |
951 | if (result == 0x87) | |
952 | error = -ENAMETOOLONG; | |
2e54eb96 PV |
953 | else if (result < 0) |
954 | error = result; | |
84eb3532 | 955 | DPRINTK("ncp_create: %pd2 failed\n", dentry); |
1da177e4 LT |
956 | goto out; |
957 | } | |
958 | opmode = O_WRONLY; | |
959 | } | |
960 | finfo.access = opmode; | |
961 | if (ncp_is_nfs_extras(server, finfo.volume)) { | |
962 | finfo.i.nfs.mode = mode; | |
963 | finfo.i.nfs.rdev = new_encode_dev(rdev); | |
964 | if (ncp_modify_nfs_info(server, finfo.volume, | |
965 | finfo.i.dirEntNum, | |
966 | mode, new_encode_dev(rdev)) != 0) | |
967 | goto out; | |
968 | } | |
969 | ||
970 | error = ncp_instantiate(dir, dentry, &finfo); | |
971 | out: | |
1da177e4 LT |
972 | return error; |
973 | } | |
974 | ||
4acdaf27 | 975 | static int ncp_create(struct inode *dir, struct dentry *dentry, umode_t mode, |
ebfc3b49 | 976 | bool excl) |
1da177e4 LT |
977 | { |
978 | return ncp_create_new(dir, dentry, mode, 0, 0); | |
979 | } | |
980 | ||
18bb1db3 | 981 | static int ncp_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
1da177e4 LT |
982 | { |
983 | struct ncp_entry_info finfo; | |
984 | struct ncp_server *server = NCP_SERVER(dir); | |
985 | int error, len; | |
986 | __u8 __name[NCP_MAXPATHLEN + 1]; | |
987 | ||
84eb3532 | 988 | DPRINTK("ncp_mkdir: making %pd2\n", dentry); |
1da177e4 | 989 | |
1da177e4 LT |
990 | ncp_age_dentry(server, dentry); |
991 | len = sizeof(__name); | |
992 | error = ncp_io2vol(server, __name, &len, dentry->d_name.name, | |
993 | dentry->d_name.len, !ncp_preserve_case(dir)); | |
994 | if (error) | |
995 | goto out; | |
996 | ||
2e54eb96 | 997 | error = ncp_open_create_file_or_subdir(server, dir, __name, |
1da177e4 LT |
998 | OC_MODE_CREATE, aDIR, |
999 | cpu_to_le16(0xffff), | |
2e54eb96 PV |
1000 | &finfo); |
1001 | if (error == 0) { | |
1da177e4 LT |
1002 | if (ncp_is_nfs_extras(server, finfo.volume)) { |
1003 | mode |= S_IFDIR; | |
1004 | finfo.i.nfs.mode = mode; | |
1005 | if (ncp_modify_nfs_info(server, | |
1006 | finfo.volume, | |
1007 | finfo.i.dirEntNum, | |
1008 | mode, 0) != 0) | |
1009 | goto out; | |
1010 | } | |
1011 | error = ncp_instantiate(dir, dentry, &finfo); | |
2e54eb96 PV |
1012 | } else if (error > 0) { |
1013 | error = -EACCES; | |
1da177e4 LT |
1014 | } |
1015 | out: | |
1da177e4 LT |
1016 | return error; |
1017 | } | |
1018 | ||
1019 | static int ncp_rmdir(struct inode *dir, struct dentry *dentry) | |
1020 | { | |
1021 | struct ncp_server *server = NCP_SERVER(dir); | |
1022 | int error, result, len; | |
1023 | __u8 __name[NCP_MAXPATHLEN + 1]; | |
1024 | ||
84eb3532 | 1025 | DPRINTK("ncp_rmdir: removing %pd2\n", dentry); |
1da177e4 | 1026 | |
1da177e4 LT |
1027 | len = sizeof(__name); |
1028 | error = ncp_io2vol(server, __name, &len, dentry->d_name.name, | |
1029 | dentry->d_name.len, !ncp_preserve_case(dir)); | |
1030 | if (error) | |
1031 | goto out; | |
1032 | ||
1033 | result = ncp_del_file_or_subdir(server, dir, __name); | |
1034 | switch (result) { | |
1035 | case 0x00: | |
1036 | error = 0; | |
1037 | break; | |
1038 | case 0x85: /* unauthorized to delete file */ | |
1039 | case 0x8A: /* unauthorized to delete file */ | |
1040 | error = -EACCES; | |
1041 | break; | |
1042 | case 0x8F: | |
1043 | case 0x90: /* read only */ | |
1044 | error = -EPERM; | |
1045 | break; | |
1046 | case 0x9F: /* in use by another client */ | |
1047 | error = -EBUSY; | |
1048 | break; | |
1049 | case 0xA0: /* directory not empty */ | |
1050 | error = -ENOTEMPTY; | |
1051 | break; | |
1052 | case 0xFF: /* someone deleted file */ | |
1053 | error = -ENOENT; | |
1054 | break; | |
1055 | default: | |
2e54eb96 | 1056 | error = result < 0 ? result : -EACCES; |
1da177e4 LT |
1057 | break; |
1058 | } | |
1059 | out: | |
1da177e4 LT |
1060 | return error; |
1061 | } | |
1062 | ||
1063 | static int ncp_unlink(struct inode *dir, struct dentry *dentry) | |
1064 | { | |
1065 | struct inode *inode = dentry->d_inode; | |
1066 | struct ncp_server *server; | |
1067 | int error; | |
1068 | ||
1da177e4 | 1069 | server = NCP_SERVER(dir); |
84eb3532 | 1070 | DPRINTK("ncp_unlink: unlinking %pd2\n", dentry); |
1da177e4 | 1071 | |
1da177e4 LT |
1072 | /* |
1073 | * Check whether to close the file ... | |
1074 | */ | |
1075 | if (inode) { | |
1076 | PPRINTK("ncp_unlink: closing file\n"); | |
1077 | ncp_make_closed(inode); | |
1078 | } | |
1079 | ||
1080 | error = ncp_del_file_or_subdir2(server, dentry); | |
1081 | #ifdef CONFIG_NCPFS_STRONG | |
1082 | /* 9C is Invalid path.. It should be 8F, 90 - read only, but | |
1083 | it is not :-( */ | |
1084 | if ((error == 0x9C || error == 0x90) && server->m.flags & NCP_MOUNT_STRONG) { /* R/O */ | |
1085 | error = ncp_force_unlink(dir, dentry); | |
1086 | } | |
1087 | #endif | |
1088 | switch (error) { | |
1089 | case 0x00: | |
84eb3532 | 1090 | DPRINTK("ncp: removed %pd2\n", dentry); |
1da177e4 LT |
1091 | break; |
1092 | case 0x85: | |
1093 | case 0x8A: | |
1094 | error = -EACCES; | |
1095 | break; | |
1096 | case 0x8D: /* some files in use */ | |
1097 | case 0x8E: /* all files in use */ | |
1098 | error = -EBUSY; | |
1099 | break; | |
1100 | case 0x8F: /* some read only */ | |
1101 | case 0x90: /* all read only */ | |
1102 | case 0x9C: /* !!! returned when in-use or read-only by NW4 */ | |
1103 | error = -EPERM; | |
1104 | break; | |
1105 | case 0xFF: | |
1106 | error = -ENOENT; | |
1107 | break; | |
1108 | default: | |
2e54eb96 | 1109 | error = error < 0 ? error : -EACCES; |
1da177e4 LT |
1110 | break; |
1111 | } | |
1da177e4 LT |
1112 | return error; |
1113 | } | |
1114 | ||
1115 | static int ncp_rename(struct inode *old_dir, struct dentry *old_dentry, | |
1116 | struct inode *new_dir, struct dentry *new_dentry) | |
1117 | { | |
1118 | struct ncp_server *server = NCP_SERVER(old_dir); | |
1119 | int error; | |
1120 | int old_len, new_len; | |
1121 | __u8 __old_name[NCP_MAXPATHLEN + 1], __new_name[NCP_MAXPATHLEN + 1]; | |
1122 | ||
84eb3532 | 1123 | DPRINTK("ncp_rename: %pd2 to %pd2\n", old_dentry, new_dentry); |
1da177e4 | 1124 | |
1da177e4 LT |
1125 | ncp_age_dentry(server, old_dentry); |
1126 | ncp_age_dentry(server, new_dentry); | |
1127 | ||
1128 | old_len = sizeof(__old_name); | |
1129 | error = ncp_io2vol(server, __old_name, &old_len, | |
1130 | old_dentry->d_name.name, old_dentry->d_name.len, | |
1131 | !ncp_preserve_case(old_dir)); | |
1132 | if (error) | |
1133 | goto out; | |
1134 | ||
1135 | new_len = sizeof(__new_name); | |
1136 | error = ncp_io2vol(server, __new_name, &new_len, | |
1137 | new_dentry->d_name.name, new_dentry->d_name.len, | |
1138 | !ncp_preserve_case(new_dir)); | |
1139 | if (error) | |
1140 | goto out; | |
1141 | ||
1142 | error = ncp_ren_or_mov_file_or_subdir(server, old_dir, __old_name, | |
1143 | new_dir, __new_name); | |
1144 | #ifdef CONFIG_NCPFS_STRONG | |
1145 | if ((error == 0x90 || error == 0x8B || error == -EACCES) && | |
1146 | server->m.flags & NCP_MOUNT_STRONG) { /* RO */ | |
1147 | error = ncp_force_rename(old_dir, old_dentry, __old_name, | |
1148 | new_dir, new_dentry, __new_name); | |
1149 | } | |
1150 | #endif | |
1151 | switch (error) { | |
1152 | case 0x00: | |
84eb3532 AV |
1153 | DPRINTK("ncp renamed %pd -> %pd.\n", |
1154 | old_dentry, new_dentry); | |
1da177e4 LT |
1155 | break; |
1156 | case 0x9E: | |
1157 | error = -ENAMETOOLONG; | |
1158 | break; | |
1159 | case 0xFF: | |
1160 | error = -ENOENT; | |
1161 | break; | |
1162 | default: | |
2e54eb96 | 1163 | error = error < 0 ? error : -EACCES; |
1da177e4 LT |
1164 | break; |
1165 | } | |
1166 | out: | |
1da177e4 LT |
1167 | return error; |
1168 | } | |
1169 | ||
1170 | static int ncp_mknod(struct inode * dir, struct dentry *dentry, | |
1a67aafb | 1171 | umode_t mode, dev_t rdev) |
1da177e4 LT |
1172 | { |
1173 | if (!new_valid_dev(rdev)) | |
1174 | return -EINVAL; | |
1175 | if (ncp_is_nfs_extras(NCP_SERVER(dir), NCP_FINFO(dir)->volNumber)) { | |
1a67aafb | 1176 | DPRINTK(KERN_DEBUG "ncp_mknod: mode = 0%ho\n", mode); |
1da177e4 LT |
1177 | return ncp_create_new(dir, dentry, mode, rdev, 0); |
1178 | } | |
1179 | return -EPERM; /* Strange, but true */ | |
1180 | } | |
1181 | ||
1182 | /* The following routines are taken directly from msdos-fs */ | |
1183 | ||
1184 | /* Linear day numbers of the respective 1sts in non-leap years. */ | |
1185 | ||
1186 | static int day_n[] = | |
1187 | {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0}; | |
1188 | /* Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec */ | |
1189 | ||
1190 | ||
1191 | extern struct timezone sys_tz; | |
1192 | ||
1193 | static int utc2local(int time) | |
1194 | { | |
1195 | return time - sys_tz.tz_minuteswest * 60; | |
1196 | } | |
1197 | ||
1198 | static int local2utc(int time) | |
1199 | { | |
1200 | return time + sys_tz.tz_minuteswest * 60; | |
1201 | } | |
1202 | ||
1203 | /* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */ | |
1204 | int | |
1205 | ncp_date_dos2unix(__le16 t, __le16 d) | |
1206 | { | |
1207 | unsigned short time = le16_to_cpu(t), date = le16_to_cpu(d); | |
1208 | int month, year, secs; | |
1209 | ||
1210 | /* first subtract and mask after that... Otherwise, if | |
1211 | date == 0, bad things happen */ | |
1212 | month = ((date >> 5) - 1) & 15; | |
1213 | year = date >> 9; | |
1214 | secs = (time & 31) * 2 + 60 * ((time >> 5) & 63) + (time >> 11) * 3600 + | |
1215 | 86400 * ((date & 31) - 1 + day_n[month] + (year / 4) + | |
1216 | year * 365 - ((year & 3) == 0 && month < 2 ? 1 : 0) + 3653); | |
1217 | /* days since 1.1.70 plus 80's leap day */ | |
1218 | return local2utc(secs); | |
1219 | } | |
1220 | ||
1221 | ||
1222 | /* Convert linear UNIX date to a MS-DOS time/date pair. */ | |
1223 | void | |
1224 | ncp_date_unix2dos(int unix_date, __le16 *time, __le16 *date) | |
1225 | { | |
1226 | int day, year, nl_day, month; | |
1227 | ||
1228 | unix_date = utc2local(unix_date); | |
1229 | *time = cpu_to_le16( | |
1230 | (unix_date % 60) / 2 + (((unix_date / 60) % 60) << 5) + | |
1231 | (((unix_date / 3600) % 24) << 11)); | |
1232 | day = unix_date / 86400 - 3652; | |
1233 | year = day / 365; | |
1234 | if ((year + 3) / 4 + 365 * year > day) | |
1235 | year--; | |
1236 | day -= (year + 3) / 4 + 365 * year; | |
1237 | if (day == 59 && !(year & 3)) { | |
1238 | nl_day = day; | |
1239 | month = 2; | |
1240 | } else { | |
1241 | nl_day = (year & 3) || day <= 59 ? day : day - 1; | |
c5df5913 | 1242 | for (month = 1; month < 12; month++) |
1da177e4 LT |
1243 | if (day_n[month] > nl_day) |
1244 | break; | |
1245 | } | |
1246 | *date = cpu_to_le16(nl_day - day_n[month - 1] + 1 + (month << 5) + (year << 9)); | |
1247 | } |