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 LT |
23 | |
24 | #include <linux/ncp_fs.h> | |
25 | ||
26 | #include "ncplib_kernel.h" | |
27 | ||
28 | static void ncp_read_volume_list(struct file *, void *, filldir_t, | |
29 | struct ncp_cache_control *); | |
30 | static void ncp_do_readdir(struct file *, void *, filldir_t, | |
31 | struct ncp_cache_control *); | |
32 | ||
33 | static int ncp_readdir(struct file *, void *, filldir_t); | |
34 | ||
35 | static int ncp_create(struct inode *, struct dentry *, int, struct nameidata *); | |
36 | static struct dentry *ncp_lookup(struct inode *, struct dentry *, struct nameidata *); | |
37 | static int ncp_unlink(struct inode *, struct dentry *); | |
38 | static int ncp_mkdir(struct inode *, struct dentry *, int); | |
39 | static int ncp_rmdir(struct inode *, struct dentry *); | |
40 | static int ncp_rename(struct inode *, struct dentry *, | |
41 | struct inode *, struct dentry *); | |
42 | static int ncp_mknod(struct inode * dir, struct dentry *dentry, | |
43 | int mode, dev_t rdev); | |
44 | #if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS) | |
45 | extern int ncp_symlink(struct inode *, struct dentry *, const char *); | |
46 | #else | |
47 | #define ncp_symlink NULL | |
48 | #endif | |
49 | ||
4b6f5d20 | 50 | const struct file_operations ncp_dir_operations = |
1da177e4 | 51 | { |
ca572727 | 52 | .llseek = generic_file_llseek, |
1da177e4 LT |
53 | .read = generic_read_dir, |
54 | .readdir = ncp_readdir, | |
93d84b6d | 55 | .unlocked_ioctl = ncp_ioctl, |
54f67f63 PV |
56 | #ifdef CONFIG_COMPAT |
57 | .compat_ioctl = ncp_compat_ioctl, | |
58 | #endif | |
1da177e4 LT |
59 | }; |
60 | ||
92e1d5be | 61 | const struct inode_operations ncp_dir_inode_operations = |
1da177e4 LT |
62 | { |
63 | .create = ncp_create, | |
64 | .lookup = ncp_lookup, | |
65 | .unlink = ncp_unlink, | |
66 | .symlink = ncp_symlink, | |
67 | .mkdir = ncp_mkdir, | |
68 | .rmdir = ncp_rmdir, | |
69 | .mknod = ncp_mknod, | |
70 | .rename = ncp_rename, | |
71 | .setattr = ncp_notify_change, | |
72 | }; | |
73 | ||
74 | /* | |
75 | * Dentry operations routines | |
76 | */ | |
77 | static int ncp_lookup_validate(struct dentry *, struct nameidata *); | |
b1e6a015 NP |
78 | static int ncp_hash_dentry(const struct dentry *, const struct inode *, |
79 | struct qstr *); | |
621e155a NP |
80 | static int ncp_compare_dentry(const struct dentry *, const struct inode *, |
81 | const struct dentry *, const struct inode *, | |
82 | unsigned int, const char *, const struct qstr *); | |
fe15ce44 | 83 | static int ncp_delete_dentry(const struct dentry *); |
1da177e4 | 84 | |
e16404ed | 85 | static const struct dentry_operations ncp_dentry_operations = |
1da177e4 LT |
86 | { |
87 | .d_revalidate = ncp_lookup_validate, | |
88 | .d_hash = ncp_hash_dentry, | |
89 | .d_compare = ncp_compare_dentry, | |
90 | .d_delete = ncp_delete_dentry, | |
91 | }; | |
92 | ||
e16404ed | 93 | const struct dentry_operations ncp_root_dentry_operations = |
1da177e4 LT |
94 | { |
95 | .d_hash = ncp_hash_dentry, | |
96 | .d_compare = ncp_compare_dentry, | |
97 | .d_delete = ncp_delete_dentry, | |
98 | }; | |
99 | ||
100 | ||
2e54eb96 PV |
101 | #define ncp_namespace(i) (NCP_SERVER(i)->name_space[NCP_FINFO(i)->volNumber]) |
102 | ||
103 | static inline int ncp_preserve_entry_case(struct inode *i, __u32 nscreator) | |
104 | { | |
105 | #ifdef CONFIG_NCPFS_SMALLDOS | |
106 | int ns = ncp_namespace(i); | |
107 | ||
108 | if ((ns == NW_NS_DOS) | |
109 | #ifdef CONFIG_NCPFS_OS2_NS | |
110 | || ((ns == NW_NS_OS2) && (nscreator == NW_NS_DOS)) | |
111 | #endif /* CONFIG_NCPFS_OS2_NS */ | |
112 | ) | |
113 | return 0; | |
114 | #endif /* CONFIG_NCPFS_SMALLDOS */ | |
115 | return 1; | |
116 | } | |
117 | ||
118 | #define ncp_preserve_case(i) (ncp_namespace(i) != NW_NS_DOS) | |
119 | ||
621e155a | 120 | static inline int ncp_case_sensitive(const struct inode *i) |
2e54eb96 PV |
121 | { |
122 | #ifdef CONFIG_NCPFS_NFS_NS | |
621e155a | 123 | return ncp_namespace(i) == NW_NS_NFS; |
2e54eb96 PV |
124 | #else |
125 | return 0; | |
126 | #endif /* CONFIG_NCPFS_NFS_NS */ | |
127 | } | |
128 | ||
1da177e4 LT |
129 | /* |
130 | * Note: leave the hash unchanged if the directory | |
131 | * is case-sensitive. | |
132 | */ | |
133 | static int | |
b1e6a015 NP |
134 | ncp_hash_dentry(const struct dentry *dentry, const struct inode *inode, |
135 | struct qstr *this) | |
1da177e4 | 136 | { |
b1e6a015 | 137 | if (!ncp_case_sensitive(inode)) { |
621e155a | 138 | struct super_block *sb = dentry->d_sb; |
2e54eb96 PV |
139 | struct nls_table *t; |
140 | unsigned long hash; | |
141 | int i; | |
1da177e4 | 142 | |
621e155a | 143 | t = NCP_IO_TABLE(sb); |
1da177e4 LT |
144 | hash = init_name_hash(); |
145 | for (i=0; i<this->len ; i++) | |
146 | hash = partial_name_hash(ncp_tolower(t, this->name[i]), | |
147 | hash); | |
148 | this->hash = end_name_hash(hash); | |
149 | } | |
150 | return 0; | |
151 | } | |
152 | ||
153 | static int | |
621e155a NP |
154 | ncp_compare_dentry(const struct dentry *parent, const struct inode *pinode, |
155 | const struct dentry *dentry, const struct inode *inode, | |
156 | unsigned int len, const char *str, const struct qstr *name) | |
1da177e4 | 157 | { |
621e155a | 158 | if (len != name->len) |
1da177e4 LT |
159 | return 1; |
160 | ||
621e155a NP |
161 | if (ncp_case_sensitive(pinode)) |
162 | return strncmp(str, name->name, len); | |
1da177e4 | 163 | |
621e155a | 164 | return ncp_strnicmp(NCP_IO_TABLE(pinode->i_sb), str, name->name, len); |
1da177e4 LT |
165 | } |
166 | ||
167 | /* | |
168 | * This is the callback from dput() when d_count is going to 0. | |
169 | * We use this to unhash dentries with bad inodes. | |
170 | * Closing files can be safely postponed until iput() - it's done there anyway. | |
171 | */ | |
172 | static int | |
fe15ce44 | 173 | ncp_delete_dentry(const struct dentry * dentry) |
1da177e4 LT |
174 | { |
175 | struct inode *inode = dentry->d_inode; | |
176 | ||
177 | if (inode) { | |
178 | if (is_bad_inode(inode)) | |
179 | return 1; | |
180 | } else | |
181 | { | |
182 | /* N.B. Unhash negative dentries? */ | |
183 | } | |
184 | return 0; | |
185 | } | |
186 | ||
187 | static inline int | |
188 | ncp_single_volume(struct ncp_server *server) | |
189 | { | |
190 | return (server->m.mounted_vol[0] != '\0'); | |
191 | } | |
192 | ||
193 | static inline int ncp_is_server_root(struct inode *inode) | |
194 | { | |
195 | return (!ncp_single_volume(NCP_SERVER(inode)) && | |
196 | inode == inode->i_sb->s_root->d_inode); | |
197 | } | |
198 | ||
199 | ||
200 | /* | |
201 | * This is the callback when the dcache has a lookup hit. | |
202 | */ | |
203 | ||
204 | ||
205 | #ifdef CONFIG_NCPFS_STRONG | |
206 | /* try to delete a readonly file (NW R bit set) */ | |
207 | ||
208 | static int | |
209 | ncp_force_unlink(struct inode *dir, struct dentry* dentry) | |
210 | { | |
211 | int res=0x9c,res2; | |
212 | struct nw_modify_dos_info info; | |
213 | __le32 old_nwattr; | |
214 | struct inode *inode; | |
215 | ||
216 | memset(&info, 0, sizeof(info)); | |
217 | ||
218 | /* remove the Read-Only flag on the NW server */ | |
219 | inode = dentry->d_inode; | |
220 | ||
221 | old_nwattr = NCP_FINFO(inode)->nwattr; | |
222 | info.attributes = old_nwattr & ~(aRONLY|aDELETEINHIBIT|aRENAMEINHIBIT); | |
223 | res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(inode), inode, NULL, DM_ATTRIBUTES, &info); | |
224 | if (res2) | |
225 | goto leave_me; | |
226 | ||
227 | /* now try again the delete operation */ | |
228 | res = ncp_del_file_or_subdir2(NCP_SERVER(dir), dentry); | |
229 | ||
230 | if (res) /* delete failed, set R bit again */ | |
231 | { | |
232 | info.attributes = old_nwattr; | |
233 | res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(inode), inode, NULL, DM_ATTRIBUTES, &info); | |
234 | if (res2) | |
235 | goto leave_me; | |
236 | } | |
237 | leave_me: | |
238 | return(res); | |
239 | } | |
240 | #endif /* CONFIG_NCPFS_STRONG */ | |
241 | ||
242 | #ifdef CONFIG_NCPFS_STRONG | |
243 | static int | |
244 | ncp_force_rename(struct inode *old_dir, struct dentry* old_dentry, char *_old_name, | |
245 | struct inode *new_dir, struct dentry* new_dentry, char *_new_name) | |
246 | { | |
247 | struct nw_modify_dos_info info; | |
248 | int res=0x90,res2; | |
249 | struct inode *old_inode = old_dentry->d_inode; | |
250 | __le32 old_nwattr = NCP_FINFO(old_inode)->nwattr; | |
251 | __le32 new_nwattr = 0; /* shut compiler warning */ | |
252 | int old_nwattr_changed = 0; | |
253 | int new_nwattr_changed = 0; | |
254 | ||
255 | memset(&info, 0, sizeof(info)); | |
256 | ||
257 | /* remove the Read-Only flag on the NW server */ | |
258 | ||
259 | info.attributes = old_nwattr & ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT); | |
260 | res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(old_inode), old_inode, NULL, DM_ATTRIBUTES, &info); | |
261 | if (!res2) | |
262 | old_nwattr_changed = 1; | |
263 | if (new_dentry && new_dentry->d_inode) { | |
264 | new_nwattr = NCP_FINFO(new_dentry->d_inode)->nwattr; | |
265 | info.attributes = new_nwattr & ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT); | |
266 | res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(new_dir), new_dir, _new_name, DM_ATTRIBUTES, &info); | |
267 | if (!res2) | |
268 | new_nwattr_changed = 1; | |
269 | } | |
270 | /* now try again the rename operation */ | |
271 | /* but only if something really happened */ | |
272 | if (new_nwattr_changed || old_nwattr_changed) { | |
273 | res = ncp_ren_or_mov_file_or_subdir(NCP_SERVER(old_dir), | |
274 | old_dir, _old_name, | |
275 | new_dir, _new_name); | |
276 | } | |
277 | if (res) | |
278 | goto leave_me; | |
279 | /* file was successfully renamed, so: | |
280 | do not set attributes on old file - it no longer exists | |
281 | copy attributes from old file to new */ | |
282 | new_nwattr_changed = old_nwattr_changed; | |
283 | new_nwattr = old_nwattr; | |
284 | old_nwattr_changed = 0; | |
285 | ||
286 | leave_me:; | |
287 | if (old_nwattr_changed) { | |
288 | info.attributes = old_nwattr; | |
289 | res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(old_inode), old_inode, NULL, DM_ATTRIBUTES, &info); | |
290 | /* ignore errors */ | |
291 | } | |
292 | if (new_nwattr_changed) { | |
293 | info.attributes = new_nwattr; | |
294 | res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(new_dir), new_dir, _new_name, DM_ATTRIBUTES, &info); | |
295 | /* ignore errors */ | |
296 | } | |
297 | return(res); | |
298 | } | |
299 | #endif /* CONFIG_NCPFS_STRONG */ | |
300 | ||
301 | ||
302 | static int | |
2e54eb96 | 303 | ncp_lookup_validate(struct dentry *dentry, struct nameidata *nd) |
1da177e4 LT |
304 | { |
305 | struct ncp_server *server; | |
306 | struct dentry *parent; | |
307 | struct inode *dir; | |
308 | struct ncp_entry_info finfo; | |
309 | int res, val = 0, len; | |
310 | __u8 __name[NCP_MAXPATHLEN + 1]; | |
311 | ||
34286d66 NP |
312 | if (nd->flags & LOOKUP_RCU) |
313 | return -ECHILD; | |
314 | ||
1da177e4 LT |
315 | parent = dget_parent(dentry); |
316 | dir = parent->d_inode; | |
317 | ||
318 | if (!dentry->d_inode) | |
319 | goto finished; | |
320 | ||
321 | server = NCP_SERVER(dir); | |
322 | ||
1da177e4 LT |
323 | /* |
324 | * Inspired by smbfs: | |
325 | * The default validation is based on dentry age: | |
326 | * We set the max age at mount time. (But each | |
327 | * successful server lookup renews the timestamp.) | |
328 | */ | |
329 | val = NCP_TEST_AGE(server, dentry); | |
330 | if (val) | |
331 | goto finished; | |
332 | ||
333 | DDPRINTK("ncp_lookup_validate: %s/%s not valid, age=%ld, server lookup\n", | |
334 | dentry->d_parent->d_name.name, dentry->d_name.name, | |
335 | NCP_GET_AGE(dentry)); | |
336 | ||
337 | len = sizeof(__name); | |
338 | if (ncp_is_server_root(dir)) { | |
339 | res = ncp_io2vol(server, __name, &len, dentry->d_name.name, | |
340 | dentry->d_name.len, 1); | |
2e54eb96 | 341 | if (!res) { |
1da177e4 | 342 | res = ncp_lookup_volume(server, __name, &(finfo.i)); |
2e54eb96 PV |
343 | if (!res) |
344 | ncp_update_known_namespace(server, finfo.i.volNumber, NULL); | |
345 | } | |
1da177e4 LT |
346 | } else { |
347 | res = ncp_io2vol(server, __name, &len, dentry->d_name.name, | |
348 | dentry->d_name.len, !ncp_preserve_case(dir)); | |
349 | if (!res) | |
350 | res = ncp_obtain_info(server, dir, __name, &(finfo.i)); | |
351 | } | |
352 | finfo.volume = finfo.i.volNumber; | |
353 | DDPRINTK("ncp_lookup_validate: looked for %s/%s, res=%d\n", | |
354 | dentry->d_parent->d_name.name, __name, res); | |
355 | /* | |
356 | * If we didn't find it, or if it has a different dirEntNum to | |
357 | * what we remember, it's not valid any more. | |
358 | */ | |
359 | if (!res) { | |
2e54eb96 PV |
360 | struct inode *inode = dentry->d_inode; |
361 | ||
362 | mutex_lock(&inode->i_mutex); | |
363 | if (finfo.i.dirEntNum == NCP_FINFO(inode)->dirEntNum) { | |
1da177e4 LT |
364 | ncp_new_dentry(dentry); |
365 | val=1; | |
366 | } else | |
367 | DDPRINTK("ncp_lookup_validate: found, but dirEntNum changed\n"); | |
368 | ||
2e54eb96 PV |
369 | ncp_update_inode2(inode, &finfo); |
370 | mutex_unlock(&inode->i_mutex); | |
1da177e4 LT |
371 | } |
372 | ||
373 | finished: | |
374 | DDPRINTK("ncp_lookup_validate: result=%d\n", val); | |
375 | dput(parent); | |
376 | return val; | |
377 | } | |
378 | ||
1da177e4 LT |
379 | static struct dentry * |
380 | ncp_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos) | |
381 | { | |
382 | struct dentry *dent = dentry; | |
383 | struct list_head *next; | |
384 | ||
385 | if (d_validate(dent, parent)) { | |
386 | if (dent->d_name.len <= NCP_MAXPATHLEN && | |
387 | (unsigned long)dent->d_fsdata == fpos) { | |
388 | if (!dent->d_inode) { | |
389 | dput(dent); | |
390 | dent = NULL; | |
391 | } | |
392 | return dent; | |
393 | } | |
394 | dput(dent); | |
395 | } | |
396 | ||
397 | /* If a pointer is invalid, we search the dentry. */ | |
2fd6b7f5 | 398 | spin_lock(&parent->d_lock); |
1da177e4 LT |
399 | next = parent->d_subdirs.next; |
400 | while (next != &parent->d_subdirs) { | |
5160ee6f | 401 | dent = list_entry(next, struct dentry, d_u.d_child); |
1da177e4 LT |
402 | if ((unsigned long)dent->d_fsdata == fpos) { |
403 | if (dent->d_inode) | |
dc0474be | 404 | dget(dent); |
1da177e4 LT |
405 | else |
406 | dent = NULL; | |
2fd6b7f5 | 407 | spin_unlock(&parent->d_lock); |
1da177e4 LT |
408 | goto out; |
409 | } | |
410 | next = next->next; | |
411 | } | |
2fd6b7f5 | 412 | spin_unlock(&parent->d_lock); |
1da177e4 LT |
413 | return NULL; |
414 | ||
415 | out: | |
416 | return dent; | |
417 | } | |
418 | ||
419 | static time_t ncp_obtain_mtime(struct dentry *dentry) | |
420 | { | |
421 | struct inode *inode = dentry->d_inode; | |
422 | struct ncp_server *server = NCP_SERVER(inode); | |
423 | struct nw_info_struct i; | |
424 | ||
425 | if (!ncp_conn_valid(server) || ncp_is_server_root(inode)) | |
426 | return 0; | |
427 | ||
428 | if (ncp_obtain_info(server, inode, NULL, &i)) | |
429 | return 0; | |
430 | ||
431 | return ncp_date_dos2unix(i.modifyTime, i.modifyDate); | |
432 | } | |
433 | ||
434 | static int ncp_readdir(struct file *filp, void *dirent, filldir_t filldir) | |
435 | { | |
92e5baef | 436 | struct dentry *dentry = filp->f_path.dentry; |
1da177e4 LT |
437 | struct inode *inode = dentry->d_inode; |
438 | struct page *page = NULL; | |
439 | struct ncp_server *server = NCP_SERVER(inode); | |
440 | union ncp_dir_cache *cache = NULL; | |
441 | struct ncp_cache_control ctl; | |
442 | int result, mtime_valid = 0; | |
443 | time_t mtime = 0; | |
444 | ||
1da177e4 LT |
445 | ctl.page = NULL; |
446 | ctl.cache = NULL; | |
447 | ||
448 | DDPRINTK("ncp_readdir: reading %s/%s, pos=%d\n", | |
449 | dentry->d_parent->d_name.name, dentry->d_name.name, | |
450 | (int) filp->f_pos); | |
451 | ||
452 | result = -EIO; | |
2e54eb96 | 453 | /* Do not generate '.' and '..' when server is dead. */ |
1da177e4 LT |
454 | if (!ncp_conn_valid(server)) |
455 | goto out; | |
456 | ||
457 | result = 0; | |
458 | if (filp->f_pos == 0) { | |
459 | if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR)) | |
460 | goto out; | |
461 | filp->f_pos = 1; | |
462 | } | |
463 | if (filp->f_pos == 1) { | |
464 | if (filldir(dirent, "..", 2, 1, parent_ino(dentry), DT_DIR)) | |
465 | goto out; | |
466 | filp->f_pos = 2; | |
467 | } | |
468 | ||
469 | page = grab_cache_page(&inode->i_data, 0); | |
470 | if (!page) | |
471 | goto read_really; | |
472 | ||
473 | ctl.cache = cache = kmap(page); | |
474 | ctl.head = cache->head; | |
475 | ||
476 | if (!PageUptodate(page) || !ctl.head.eof) | |
477 | goto init_cache; | |
478 | ||
479 | if (filp->f_pos == 2) { | |
480 | if (jiffies - ctl.head.time >= NCP_MAX_AGE(server)) | |
481 | goto init_cache; | |
482 | ||
483 | mtime = ncp_obtain_mtime(dentry); | |
484 | mtime_valid = 1; | |
485 | if ((!mtime) || (mtime != ctl.head.mtime)) | |
486 | goto init_cache; | |
487 | } | |
488 | ||
489 | if (filp->f_pos > ctl.head.end) | |
490 | goto finished; | |
491 | ||
492 | ctl.fpos = filp->f_pos + (NCP_DIRCACHE_START - 2); | |
493 | ctl.ofs = ctl.fpos / NCP_DIRCACHE_SIZE; | |
494 | ctl.idx = ctl.fpos % NCP_DIRCACHE_SIZE; | |
495 | ||
496 | for (;;) { | |
497 | if (ctl.ofs != 0) { | |
498 | ctl.page = find_lock_page(&inode->i_data, ctl.ofs); | |
499 | if (!ctl.page) | |
500 | goto invalid_cache; | |
501 | ctl.cache = kmap(ctl.page); | |
502 | if (!PageUptodate(ctl.page)) | |
503 | goto invalid_cache; | |
504 | } | |
505 | while (ctl.idx < NCP_DIRCACHE_SIZE) { | |
506 | struct dentry *dent; | |
507 | int res; | |
508 | ||
509 | dent = ncp_dget_fpos(ctl.cache->dentry[ctl.idx], | |
510 | dentry, filp->f_pos); | |
511 | if (!dent) | |
512 | goto invalid_cache; | |
513 | res = filldir(dirent, dent->d_name.name, | |
514 | dent->d_name.len, filp->f_pos, | |
515 | dent->d_inode->i_ino, DT_UNKNOWN); | |
516 | dput(dent); | |
517 | if (res) | |
518 | goto finished; | |
519 | filp->f_pos += 1; | |
520 | ctl.idx += 1; | |
521 | if (filp->f_pos > ctl.head.end) | |
522 | goto finished; | |
523 | } | |
524 | if (ctl.page) { | |
525 | kunmap(ctl.page); | |
526 | SetPageUptodate(ctl.page); | |
527 | unlock_page(ctl.page); | |
528 | page_cache_release(ctl.page); | |
529 | ctl.page = NULL; | |
530 | } | |
531 | ctl.idx = 0; | |
532 | ctl.ofs += 1; | |
533 | } | |
534 | invalid_cache: | |
535 | if (ctl.page) { | |
536 | kunmap(ctl.page); | |
537 | unlock_page(ctl.page); | |
538 | page_cache_release(ctl.page); | |
539 | ctl.page = NULL; | |
540 | } | |
541 | ctl.cache = cache; | |
542 | init_cache: | |
543 | ncp_invalidate_dircache_entries(dentry); | |
544 | if (!mtime_valid) { | |
545 | mtime = ncp_obtain_mtime(dentry); | |
546 | mtime_valid = 1; | |
547 | } | |
548 | ctl.head.mtime = mtime; | |
549 | ctl.head.time = jiffies; | |
550 | ctl.head.eof = 0; | |
551 | ctl.fpos = 2; | |
552 | ctl.ofs = 0; | |
553 | ctl.idx = NCP_DIRCACHE_START; | |
554 | ctl.filled = 0; | |
555 | ctl.valid = 1; | |
556 | read_really: | |
557 | if (ncp_is_server_root(inode)) { | |
558 | ncp_read_volume_list(filp, dirent, filldir, &ctl); | |
559 | } else { | |
560 | ncp_do_readdir(filp, dirent, filldir, &ctl); | |
561 | } | |
562 | ctl.head.end = ctl.fpos - 1; | |
563 | ctl.head.eof = ctl.valid; | |
564 | finished: | |
2e54eb96 PV |
565 | if (ctl.page) { |
566 | kunmap(ctl.page); | |
567 | SetPageUptodate(ctl.page); | |
568 | unlock_page(ctl.page); | |
569 | page_cache_release(ctl.page); | |
570 | } | |
1da177e4 LT |
571 | if (page) { |
572 | cache->head = ctl.head; | |
573 | kunmap(page); | |
574 | SetPageUptodate(page); | |
575 | unlock_page(page); | |
576 | page_cache_release(page); | |
577 | } | |
1da177e4 | 578 | out: |
1da177e4 LT |
579 | return result; |
580 | } | |
581 | ||
582 | static int | |
583 | ncp_fill_cache(struct file *filp, void *dirent, filldir_t filldir, | |
2e54eb96 PV |
584 | struct ncp_cache_control *ctrl, struct ncp_entry_info *entry, |
585 | int inval_childs) | |
1da177e4 | 586 | { |
92e5baef | 587 | struct dentry *newdent, *dentry = filp->f_path.dentry; |
2e54eb96 | 588 | struct inode *dir = dentry->d_inode; |
1da177e4 LT |
589 | struct ncp_cache_control ctl = *ctrl; |
590 | struct qstr qname; | |
591 | int valid = 0; | |
592 | int hashed = 0; | |
593 | ino_t ino = 0; | |
594 | __u8 __name[NCP_MAXPATHLEN + 1]; | |
595 | ||
596 | qname.len = sizeof(__name); | |
2e54eb96 | 597 | if (ncp_vol2io(NCP_SERVER(dir), __name, &qname.len, |
1da177e4 | 598 | entry->i.entryName, entry->i.nameLen, |
2e54eb96 | 599 | !ncp_preserve_entry_case(dir, entry->i.NSCreator))) |
1da177e4 LT |
600 | return 1; /* I'm not sure */ |
601 | ||
602 | qname.name = __name; | |
603 | qname.hash = full_name_hash(qname.name, qname.len); | |
604 | ||
605 | if (dentry->d_op && dentry->d_op->d_hash) | |
b1e6a015 | 606 | if (dentry->d_op->d_hash(dentry, dentry->d_inode, &qname) != 0) |
1da177e4 LT |
607 | goto end_advance; |
608 | ||
609 | newdent = d_lookup(dentry, &qname); | |
610 | ||
611 | if (!newdent) { | |
612 | newdent = d_alloc(dentry, &qname); | |
613 | if (!newdent) | |
614 | goto end_advance; | |
615 | } else { | |
616 | hashed = 1; | |
2e54eb96 PV |
617 | |
618 | /* If case sensitivity changed for this volume, all entries below this one | |
619 | should be thrown away. This entry itself is not affected, as its case | |
620 | sensitivity is controlled by its own parent. */ | |
621 | if (inval_childs) | |
622 | shrink_dcache_parent(newdent); | |
623 | ||
624 | /* | |
fb2d5b86 NP |
625 | * NetWare's OS2 namespace is case preserving yet case |
626 | * insensitive. So we update dentry's name as received from | |
627 | * server. Parent dir's i_mutex is locked because we're in | |
628 | * readdir. | |
2e54eb96 | 629 | */ |
fb2d5b86 | 630 | dentry_update_name_case(newdent, &qname); |
1da177e4 LT |
631 | } |
632 | ||
633 | if (!newdent->d_inode) { | |
2e54eb96 PV |
634 | struct inode *inode; |
635 | ||
1da177e4 | 636 | entry->opened = 0; |
2e54eb96 PV |
637 | entry->ino = iunique(dir->i_sb, 2); |
638 | inode = ncp_iget(dir->i_sb, entry); | |
639 | if (inode) { | |
fb045adb | 640 | d_set_d_op(newdent, &ncp_dentry_operations); |
2e54eb96 | 641 | d_instantiate(newdent, inode); |
1da177e4 LT |
642 | if (!hashed) |
643 | d_rehash(newdent); | |
644 | } | |
2e54eb96 PV |
645 | } else { |
646 | struct inode *inode = newdent->d_inode; | |
647 | ||
fb2d5b86 | 648 | mutex_lock_nested(&inode->i_mutex, I_MUTEX_CHILD); |
2e54eb96 PV |
649 | ncp_update_inode2(inode, entry); |
650 | mutex_unlock(&inode->i_mutex); | |
651 | } | |
1da177e4 LT |
652 | |
653 | if (newdent->d_inode) { | |
654 | ino = newdent->d_inode->i_ino; | |
655 | newdent->d_fsdata = (void *) ctl.fpos; | |
656 | ncp_new_dentry(newdent); | |
657 | } | |
658 | ||
659 | if (ctl.idx >= NCP_DIRCACHE_SIZE) { | |
660 | if (ctl.page) { | |
661 | kunmap(ctl.page); | |
662 | SetPageUptodate(ctl.page); | |
663 | unlock_page(ctl.page); | |
664 | page_cache_release(ctl.page); | |
665 | } | |
666 | ctl.cache = NULL; | |
667 | ctl.idx -= NCP_DIRCACHE_SIZE; | |
668 | ctl.ofs += 1; | |
2e54eb96 | 669 | ctl.page = grab_cache_page(&dir->i_data, ctl.ofs); |
1da177e4 LT |
670 | if (ctl.page) |
671 | ctl.cache = kmap(ctl.page); | |
672 | } | |
673 | if (ctl.cache) { | |
674 | ctl.cache->dentry[ctl.idx] = newdent; | |
675 | valid = 1; | |
676 | } | |
677 | dput(newdent); | |
678 | end_advance: | |
679 | if (!valid) | |
680 | ctl.valid = 0; | |
681 | if (!ctl.filled && (ctl.fpos == filp->f_pos)) { | |
682 | if (!ino) | |
683 | ino = find_inode_number(dentry, &qname); | |
684 | if (!ino) | |
2e54eb96 | 685 | ino = iunique(dir->i_sb, 2); |
1da177e4 LT |
686 | ctl.filled = filldir(dirent, qname.name, qname.len, |
687 | filp->f_pos, ino, DT_UNKNOWN); | |
688 | if (!ctl.filled) | |
689 | filp->f_pos += 1; | |
690 | } | |
691 | ctl.fpos += 1; | |
692 | ctl.idx += 1; | |
693 | *ctrl = ctl; | |
694 | return (ctl.valid || !ctl.filled); | |
695 | } | |
696 | ||
697 | static void | |
698 | ncp_read_volume_list(struct file *filp, void *dirent, filldir_t filldir, | |
699 | struct ncp_cache_control *ctl) | |
700 | { | |
92e5baef | 701 | struct dentry *dentry = filp->f_path.dentry; |
1da177e4 LT |
702 | struct inode *inode = dentry->d_inode; |
703 | struct ncp_server *server = NCP_SERVER(inode); | |
704 | struct ncp_volume_info info; | |
705 | struct ncp_entry_info entry; | |
706 | int i; | |
707 | ||
708 | DPRINTK("ncp_read_volume_list: pos=%ld\n", | |
709 | (unsigned long) filp->f_pos); | |
710 | ||
711 | for (i = 0; i < NCP_NUMBER_OF_VOLUMES; i++) { | |
2e54eb96 | 712 | int inval_dentry; |
1da177e4 LT |
713 | |
714 | if (ncp_get_volume_info_with_number(server, i, &info) != 0) | |
715 | return; | |
716 | if (!strlen(info.volume_name)) | |
717 | continue; | |
718 | ||
719 | DPRINTK("ncp_read_volume_list: found vol: %s\n", | |
720 | info.volume_name); | |
721 | ||
722 | if (ncp_lookup_volume(server, info.volume_name, | |
723 | &entry.i)) { | |
724 | DPRINTK("ncpfs: could not lookup vol %s\n", | |
725 | info.volume_name); | |
726 | continue; | |
727 | } | |
2e54eb96 | 728 | inval_dentry = ncp_update_known_namespace(server, entry.i.volNumber, NULL); |
1da177e4 | 729 | entry.volume = entry.i.volNumber; |
2e54eb96 | 730 | if (!ncp_fill_cache(filp, dirent, filldir, ctl, &entry, inval_dentry)) |
1da177e4 LT |
731 | return; |
732 | } | |
733 | } | |
734 | ||
735 | static void | |
736 | ncp_do_readdir(struct file *filp, void *dirent, filldir_t filldir, | |
737 | struct ncp_cache_control *ctl) | |
738 | { | |
92e5baef | 739 | struct dentry *dentry = filp->f_path.dentry; |
1da177e4 LT |
740 | struct inode *dir = dentry->d_inode; |
741 | struct ncp_server *server = NCP_SERVER(dir); | |
742 | struct nw_search_sequence seq; | |
743 | struct ncp_entry_info entry; | |
744 | int err; | |
745 | void* buf; | |
746 | int more; | |
747 | size_t bufsize; | |
748 | ||
749 | DPRINTK("ncp_do_readdir: %s/%s, fpos=%ld\n", | |
750 | dentry->d_parent->d_name.name, dentry->d_name.name, | |
751 | (unsigned long) filp->f_pos); | |
752 | PPRINTK("ncp_do_readdir: init %s, volnum=%d, dirent=%u\n", | |
753 | dentry->d_name.name, NCP_FINFO(dir)->volNumber, | |
754 | NCP_FINFO(dir)->dirEntNum); | |
755 | ||
756 | err = ncp_initialize_search(server, dir, &seq); | |
757 | if (err) { | |
758 | DPRINTK("ncp_do_readdir: init failed, err=%d\n", err); | |
759 | return; | |
760 | } | |
1da177e4 LT |
761 | /* We MUST NOT use server->buffer_size handshaked with server if we are |
762 | using UDP, as for UDP server uses max. buffer size determined by | |
763 | MTU, and for TCP server uses hardwired value 65KB (== 66560 bytes). | |
764 | So we use 128KB, just to be sure, as there is no way how to know | |
765 | this value in advance. */ | |
766 | bufsize = 131072; | |
767 | buf = vmalloc(bufsize); | |
768 | if (!buf) | |
769 | return; | |
770 | do { | |
771 | int cnt; | |
772 | char* rpl; | |
773 | size_t rpls; | |
774 | ||
775 | err = ncp_search_for_fileset(server, &seq, &more, &cnt, buf, bufsize, &rpl, &rpls); | |
776 | if (err) /* Error */ | |
777 | break; | |
778 | if (!cnt) /* prevent endless loop */ | |
779 | break; | |
780 | while (cnt--) { | |
781 | size_t onerpl; | |
782 | ||
783 | if (rpls < offsetof(struct nw_info_struct, entryName)) | |
784 | break; /* short packet */ | |
785 | ncp_extract_file_info(rpl, &entry.i); | |
786 | onerpl = offsetof(struct nw_info_struct, entryName) + entry.i.nameLen; | |
787 | if (rpls < onerpl) | |
788 | break; /* short packet */ | |
789 | (void)ncp_obtain_nfs_info(server, &entry.i); | |
790 | rpl += onerpl; | |
791 | rpls -= onerpl; | |
792 | entry.volume = entry.i.volNumber; | |
2e54eb96 | 793 | if (!ncp_fill_cache(filp, dirent, filldir, ctl, &entry, 0)) |
1da177e4 LT |
794 | break; |
795 | } | |
796 | } while (more); | |
797 | vfree(buf); | |
1da177e4 LT |
798 | return; |
799 | } | |
800 | ||
801 | int ncp_conn_logged_in(struct super_block *sb) | |
802 | { | |
803 | struct ncp_server* server = NCP_SBP(sb); | |
804 | int result; | |
805 | ||
806 | if (ncp_single_volume(server)) { | |
807 | int len; | |
808 | struct dentry* dent; | |
809 | __u32 volNumber; | |
810 | __le32 dirEntNum; | |
811 | __le32 DosDirNum; | |
812 | __u8 __name[NCP_MAXPATHLEN + 1]; | |
813 | ||
814 | len = sizeof(__name); | |
815 | result = ncp_io2vol(server, __name, &len, server->m.mounted_vol, | |
816 | strlen(server->m.mounted_vol), 1); | |
817 | if (result) | |
818 | goto out; | |
819 | result = -ENOENT; | |
820 | if (ncp_get_volume_root(server, __name, &volNumber, &dirEntNum, &DosDirNum)) { | |
821 | PPRINTK("ncp_conn_logged_in: %s not found\n", | |
822 | server->m.mounted_vol); | |
823 | goto out; | |
824 | } | |
825 | dent = sb->s_root; | |
826 | if (dent) { | |
827 | struct inode* ino = dent->d_inode; | |
828 | if (ino) { | |
2e54eb96 | 829 | ncp_update_known_namespace(server, volNumber, NULL); |
1da177e4 LT |
830 | NCP_FINFO(ino)->volNumber = volNumber; |
831 | NCP_FINFO(ino)->dirEntNum = dirEntNum; | |
832 | NCP_FINFO(ino)->DosDirNum = DosDirNum; | |
2e54eb96 | 833 | result = 0; |
1da177e4 LT |
834 | } else { |
835 | DPRINTK("ncpfs: sb->s_root->d_inode == NULL!\n"); | |
836 | } | |
837 | } else { | |
838 | DPRINTK("ncpfs: sb->s_root == NULL!\n"); | |
839 | } | |
2e54eb96 PV |
840 | } else |
841 | result = 0; | |
1da177e4 LT |
842 | |
843 | out: | |
844 | return result; | |
845 | } | |
846 | ||
847 | static struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd) | |
848 | { | |
849 | struct ncp_server *server = NCP_SERVER(dir); | |
850 | struct inode *inode = NULL; | |
851 | struct ncp_entry_info finfo; | |
852 | int error, res, len; | |
853 | __u8 __name[NCP_MAXPATHLEN + 1]; | |
854 | ||
1da177e4 LT |
855 | error = -EIO; |
856 | if (!ncp_conn_valid(server)) | |
857 | goto finished; | |
858 | ||
859 | PPRINTK("ncp_lookup: server lookup for %s/%s\n", | |
860 | dentry->d_parent->d_name.name, dentry->d_name.name); | |
861 | ||
862 | len = sizeof(__name); | |
863 | if (ncp_is_server_root(dir)) { | |
864 | res = ncp_io2vol(server, __name, &len, dentry->d_name.name, | |
865 | dentry->d_name.len, 1); | |
866 | if (!res) | |
867 | res = ncp_lookup_volume(server, __name, &(finfo.i)); | |
2e54eb96 PV |
868 | if (!res) |
869 | ncp_update_known_namespace(server, finfo.i.volNumber, NULL); | |
1da177e4 LT |
870 | } else { |
871 | res = ncp_io2vol(server, __name, &len, dentry->d_name.name, | |
872 | dentry->d_name.len, !ncp_preserve_case(dir)); | |
873 | if (!res) | |
874 | res = ncp_obtain_info(server, dir, __name, &(finfo.i)); | |
875 | } | |
876 | PPRINTK("ncp_lookup: looked for %s/%s, res=%d\n", | |
877 | dentry->d_parent->d_name.name, __name, res); | |
878 | /* | |
879 | * If we didn't find an entry, make a negative dentry. | |
880 | */ | |
881 | if (res) | |
882 | goto add_entry; | |
883 | ||
884 | /* | |
885 | * Create an inode for the entry. | |
886 | */ | |
887 | finfo.opened = 0; | |
888 | finfo.ino = iunique(dir->i_sb, 2); | |
889 | finfo.volume = finfo.i.volNumber; | |
890 | error = -EACCES; | |
891 | inode = ncp_iget(dir->i_sb, &finfo); | |
892 | ||
893 | if (inode) { | |
894 | ncp_new_dentry(dentry); | |
895 | add_entry: | |
fb045adb | 896 | d_set_d_op(dentry, &ncp_dentry_operations); |
1da177e4 LT |
897 | d_add(dentry, inode); |
898 | error = 0; | |
899 | } | |
900 | ||
901 | finished: | |
902 | PPRINTK("ncp_lookup: result=%d\n", error); | |
1da177e4 LT |
903 | return ERR_PTR(error); |
904 | } | |
905 | ||
906 | /* | |
907 | * This code is common to create, mkdir, and mknod. | |
908 | */ | |
909 | static int ncp_instantiate(struct inode *dir, struct dentry *dentry, | |
910 | struct ncp_entry_info *finfo) | |
911 | { | |
912 | struct inode *inode; | |
913 | int error = -EINVAL; | |
914 | ||
915 | finfo->ino = iunique(dir->i_sb, 2); | |
916 | inode = ncp_iget(dir->i_sb, finfo); | |
917 | if (!inode) | |
918 | goto out_close; | |
919 | d_instantiate(dentry,inode); | |
920 | error = 0; | |
921 | out: | |
922 | return error; | |
923 | ||
924 | out_close: | |
925 | PPRINTK("ncp_instantiate: %s/%s failed, closing file\n", | |
926 | dentry->d_parent->d_name.name, dentry->d_name.name); | |
927 | ncp_close_file(NCP_SERVER(dir), finfo->file_handle); | |
928 | goto out; | |
929 | } | |
930 | ||
931 | int ncp_create_new(struct inode *dir, struct dentry *dentry, int mode, | |
932 | dev_t rdev, __le32 attributes) | |
933 | { | |
934 | struct ncp_server *server = NCP_SERVER(dir); | |
935 | struct ncp_entry_info finfo; | |
936 | int error, result, len; | |
937 | int opmode; | |
938 | __u8 __name[NCP_MAXPATHLEN + 1]; | |
939 | ||
940 | PPRINTK("ncp_create_new: creating %s/%s, mode=%x\n", | |
941 | dentry->d_parent->d_name.name, dentry->d_name.name, mode); | |
942 | ||
1da177e4 LT |
943 | ncp_age_dentry(server, dentry); |
944 | len = sizeof(__name); | |
945 | error = ncp_io2vol(server, __name, &len, dentry->d_name.name, | |
946 | dentry->d_name.len, !ncp_preserve_case(dir)); | |
947 | if (error) | |
948 | goto out; | |
949 | ||
950 | error = -EACCES; | |
951 | ||
952 | if (S_ISREG(mode) && | |
953 | (server->m.flags & NCP_MOUNT_EXTRAS) && | |
954 | (mode & S_IXUGO)) | |
955 | attributes |= aSYSTEM | aSHARED; | |
956 | ||
957 | result = ncp_open_create_file_or_subdir(server, dir, __name, | |
958 | OC_MODE_CREATE | OC_MODE_OPEN | OC_MODE_REPLACE, | |
959 | attributes, AR_READ | AR_WRITE, &finfo); | |
960 | opmode = O_RDWR; | |
961 | if (result) { | |
962 | result = ncp_open_create_file_or_subdir(server, dir, __name, | |
963 | OC_MODE_CREATE | OC_MODE_OPEN | OC_MODE_REPLACE, | |
964 | attributes, AR_WRITE, &finfo); | |
965 | if (result) { | |
966 | if (result == 0x87) | |
967 | error = -ENAMETOOLONG; | |
2e54eb96 PV |
968 | else if (result < 0) |
969 | error = result; | |
1da177e4 LT |
970 | DPRINTK("ncp_create: %s/%s failed\n", |
971 | dentry->d_parent->d_name.name, dentry->d_name.name); | |
972 | goto out; | |
973 | } | |
974 | opmode = O_WRONLY; | |
975 | } | |
976 | finfo.access = opmode; | |
977 | if (ncp_is_nfs_extras(server, finfo.volume)) { | |
978 | finfo.i.nfs.mode = mode; | |
979 | finfo.i.nfs.rdev = new_encode_dev(rdev); | |
980 | if (ncp_modify_nfs_info(server, finfo.volume, | |
981 | finfo.i.dirEntNum, | |
982 | mode, new_encode_dev(rdev)) != 0) | |
983 | goto out; | |
984 | } | |
985 | ||
986 | error = ncp_instantiate(dir, dentry, &finfo); | |
987 | out: | |
1da177e4 LT |
988 | return error; |
989 | } | |
990 | ||
991 | static int ncp_create(struct inode *dir, struct dentry *dentry, int mode, | |
992 | struct nameidata *nd) | |
993 | { | |
994 | return ncp_create_new(dir, dentry, mode, 0, 0); | |
995 | } | |
996 | ||
997 | static int ncp_mkdir(struct inode *dir, struct dentry *dentry, int mode) | |
998 | { | |
999 | struct ncp_entry_info finfo; | |
1000 | struct ncp_server *server = NCP_SERVER(dir); | |
1001 | int error, len; | |
1002 | __u8 __name[NCP_MAXPATHLEN + 1]; | |
1003 | ||
1004 | DPRINTK("ncp_mkdir: making %s/%s\n", | |
1005 | dentry->d_parent->d_name.name, dentry->d_name.name); | |
1006 | ||
1da177e4 LT |
1007 | ncp_age_dentry(server, dentry); |
1008 | len = sizeof(__name); | |
1009 | error = ncp_io2vol(server, __name, &len, dentry->d_name.name, | |
1010 | dentry->d_name.len, !ncp_preserve_case(dir)); | |
1011 | if (error) | |
1012 | goto out; | |
1013 | ||
2e54eb96 | 1014 | error = ncp_open_create_file_or_subdir(server, dir, __name, |
1da177e4 LT |
1015 | OC_MODE_CREATE, aDIR, |
1016 | cpu_to_le16(0xffff), | |
2e54eb96 PV |
1017 | &finfo); |
1018 | if (error == 0) { | |
1da177e4 LT |
1019 | if (ncp_is_nfs_extras(server, finfo.volume)) { |
1020 | mode |= S_IFDIR; | |
1021 | finfo.i.nfs.mode = mode; | |
1022 | if (ncp_modify_nfs_info(server, | |
1023 | finfo.volume, | |
1024 | finfo.i.dirEntNum, | |
1025 | mode, 0) != 0) | |
1026 | goto out; | |
1027 | } | |
1028 | error = ncp_instantiate(dir, dentry, &finfo); | |
2e54eb96 PV |
1029 | } else if (error > 0) { |
1030 | error = -EACCES; | |
1da177e4 LT |
1031 | } |
1032 | out: | |
1da177e4 LT |
1033 | return error; |
1034 | } | |
1035 | ||
1036 | static int ncp_rmdir(struct inode *dir, struct dentry *dentry) | |
1037 | { | |
1038 | struct ncp_server *server = NCP_SERVER(dir); | |
1039 | int error, result, len; | |
1040 | __u8 __name[NCP_MAXPATHLEN + 1]; | |
1041 | ||
1042 | DPRINTK("ncp_rmdir: removing %s/%s\n", | |
1043 | dentry->d_parent->d_name.name, dentry->d_name.name); | |
1044 | ||
1da177e4 LT |
1045 | error = -EBUSY; |
1046 | if (!d_unhashed(dentry)) | |
1047 | goto out; | |
1048 | ||
1049 | len = sizeof(__name); | |
1050 | error = ncp_io2vol(server, __name, &len, dentry->d_name.name, | |
1051 | dentry->d_name.len, !ncp_preserve_case(dir)); | |
1052 | if (error) | |
1053 | goto out; | |
1054 | ||
1055 | result = ncp_del_file_or_subdir(server, dir, __name); | |
1056 | switch (result) { | |
1057 | case 0x00: | |
1058 | error = 0; | |
1059 | break; | |
1060 | case 0x85: /* unauthorized to delete file */ | |
1061 | case 0x8A: /* unauthorized to delete file */ | |
1062 | error = -EACCES; | |
1063 | break; | |
1064 | case 0x8F: | |
1065 | case 0x90: /* read only */ | |
1066 | error = -EPERM; | |
1067 | break; | |
1068 | case 0x9F: /* in use by another client */ | |
1069 | error = -EBUSY; | |
1070 | break; | |
1071 | case 0xA0: /* directory not empty */ | |
1072 | error = -ENOTEMPTY; | |
1073 | break; | |
1074 | case 0xFF: /* someone deleted file */ | |
1075 | error = -ENOENT; | |
1076 | break; | |
1077 | default: | |
2e54eb96 | 1078 | error = result < 0 ? result : -EACCES; |
1da177e4 LT |
1079 | break; |
1080 | } | |
1081 | out: | |
1da177e4 LT |
1082 | return error; |
1083 | } | |
1084 | ||
1085 | static int ncp_unlink(struct inode *dir, struct dentry *dentry) | |
1086 | { | |
1087 | struct inode *inode = dentry->d_inode; | |
1088 | struct ncp_server *server; | |
1089 | int error; | |
1090 | ||
1da177e4 LT |
1091 | server = NCP_SERVER(dir); |
1092 | DPRINTK("ncp_unlink: unlinking %s/%s\n", | |
1093 | dentry->d_parent->d_name.name, dentry->d_name.name); | |
1094 | ||
1da177e4 LT |
1095 | /* |
1096 | * Check whether to close the file ... | |
1097 | */ | |
1098 | if (inode) { | |
1099 | PPRINTK("ncp_unlink: closing file\n"); | |
1100 | ncp_make_closed(inode); | |
1101 | } | |
1102 | ||
1103 | error = ncp_del_file_or_subdir2(server, dentry); | |
1104 | #ifdef CONFIG_NCPFS_STRONG | |
1105 | /* 9C is Invalid path.. It should be 8F, 90 - read only, but | |
1106 | it is not :-( */ | |
1107 | if ((error == 0x9C || error == 0x90) && server->m.flags & NCP_MOUNT_STRONG) { /* R/O */ | |
1108 | error = ncp_force_unlink(dir, dentry); | |
1109 | } | |
1110 | #endif | |
1111 | switch (error) { | |
1112 | case 0x00: | |
1113 | DPRINTK("ncp: removed %s/%s\n", | |
1114 | dentry->d_parent->d_name.name, dentry->d_name.name); | |
1115 | break; | |
1116 | case 0x85: | |
1117 | case 0x8A: | |
1118 | error = -EACCES; | |
1119 | break; | |
1120 | case 0x8D: /* some files in use */ | |
1121 | case 0x8E: /* all files in use */ | |
1122 | error = -EBUSY; | |
1123 | break; | |
1124 | case 0x8F: /* some read only */ | |
1125 | case 0x90: /* all read only */ | |
1126 | case 0x9C: /* !!! returned when in-use or read-only by NW4 */ | |
1127 | error = -EPERM; | |
1128 | break; | |
1129 | case 0xFF: | |
1130 | error = -ENOENT; | |
1131 | break; | |
1132 | default: | |
2e54eb96 | 1133 | error = error < 0 ? error : -EACCES; |
1da177e4 LT |
1134 | break; |
1135 | } | |
1da177e4 LT |
1136 | return error; |
1137 | } | |
1138 | ||
1139 | static int ncp_rename(struct inode *old_dir, struct dentry *old_dentry, | |
1140 | struct inode *new_dir, struct dentry *new_dentry) | |
1141 | { | |
1142 | struct ncp_server *server = NCP_SERVER(old_dir); | |
1143 | int error; | |
1144 | int old_len, new_len; | |
1145 | __u8 __old_name[NCP_MAXPATHLEN + 1], __new_name[NCP_MAXPATHLEN + 1]; | |
1146 | ||
1147 | DPRINTK("ncp_rename: %s/%s to %s/%s\n", | |
1148 | old_dentry->d_parent->d_name.name, old_dentry->d_name.name, | |
1149 | new_dentry->d_parent->d_name.name, new_dentry->d_name.name); | |
1150 | ||
1da177e4 LT |
1151 | ncp_age_dentry(server, old_dentry); |
1152 | ncp_age_dentry(server, new_dentry); | |
1153 | ||
1154 | old_len = sizeof(__old_name); | |
1155 | error = ncp_io2vol(server, __old_name, &old_len, | |
1156 | old_dentry->d_name.name, old_dentry->d_name.len, | |
1157 | !ncp_preserve_case(old_dir)); | |
1158 | if (error) | |
1159 | goto out; | |
1160 | ||
1161 | new_len = sizeof(__new_name); | |
1162 | error = ncp_io2vol(server, __new_name, &new_len, | |
1163 | new_dentry->d_name.name, new_dentry->d_name.len, | |
1164 | !ncp_preserve_case(new_dir)); | |
1165 | if (error) | |
1166 | goto out; | |
1167 | ||
1168 | error = ncp_ren_or_mov_file_or_subdir(server, old_dir, __old_name, | |
1169 | new_dir, __new_name); | |
1170 | #ifdef CONFIG_NCPFS_STRONG | |
1171 | if ((error == 0x90 || error == 0x8B || error == -EACCES) && | |
1172 | server->m.flags & NCP_MOUNT_STRONG) { /* RO */ | |
1173 | error = ncp_force_rename(old_dir, old_dentry, __old_name, | |
1174 | new_dir, new_dentry, __new_name); | |
1175 | } | |
1176 | #endif | |
1177 | switch (error) { | |
1178 | case 0x00: | |
1179 | DPRINTK("ncp renamed %s -> %s.\n", | |
1180 | old_dentry->d_name.name,new_dentry->d_name.name); | |
1181 | break; | |
1182 | case 0x9E: | |
1183 | error = -ENAMETOOLONG; | |
1184 | break; | |
1185 | case 0xFF: | |
1186 | error = -ENOENT; | |
1187 | break; | |
1188 | default: | |
2e54eb96 | 1189 | error = error < 0 ? error : -EACCES; |
1da177e4 LT |
1190 | break; |
1191 | } | |
1192 | out: | |
1da177e4 LT |
1193 | return error; |
1194 | } | |
1195 | ||
1196 | static int ncp_mknod(struct inode * dir, struct dentry *dentry, | |
1197 | int mode, dev_t rdev) | |
1198 | { | |
1199 | if (!new_valid_dev(rdev)) | |
1200 | return -EINVAL; | |
1201 | if (ncp_is_nfs_extras(NCP_SERVER(dir), NCP_FINFO(dir)->volNumber)) { | |
1202 | DPRINTK(KERN_DEBUG "ncp_mknod: mode = 0%o\n", mode); | |
1203 | return ncp_create_new(dir, dentry, mode, rdev, 0); | |
1204 | } | |
1205 | return -EPERM; /* Strange, but true */ | |
1206 | } | |
1207 | ||
1208 | /* The following routines are taken directly from msdos-fs */ | |
1209 | ||
1210 | /* Linear day numbers of the respective 1sts in non-leap years. */ | |
1211 | ||
1212 | static int day_n[] = | |
1213 | {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0}; | |
1214 | /* Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec */ | |
1215 | ||
1216 | ||
1217 | extern struct timezone sys_tz; | |
1218 | ||
1219 | static int utc2local(int time) | |
1220 | { | |
1221 | return time - sys_tz.tz_minuteswest * 60; | |
1222 | } | |
1223 | ||
1224 | static int local2utc(int time) | |
1225 | { | |
1226 | return time + sys_tz.tz_minuteswest * 60; | |
1227 | } | |
1228 | ||
1229 | /* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */ | |
1230 | int | |
1231 | ncp_date_dos2unix(__le16 t, __le16 d) | |
1232 | { | |
1233 | unsigned short time = le16_to_cpu(t), date = le16_to_cpu(d); | |
1234 | int month, year, secs; | |
1235 | ||
1236 | /* first subtract and mask after that... Otherwise, if | |
1237 | date == 0, bad things happen */ | |
1238 | month = ((date >> 5) - 1) & 15; | |
1239 | year = date >> 9; | |
1240 | secs = (time & 31) * 2 + 60 * ((time >> 5) & 63) + (time >> 11) * 3600 + | |
1241 | 86400 * ((date & 31) - 1 + day_n[month] + (year / 4) + | |
1242 | year * 365 - ((year & 3) == 0 && month < 2 ? 1 : 0) + 3653); | |
1243 | /* days since 1.1.70 plus 80's leap day */ | |
1244 | return local2utc(secs); | |
1245 | } | |
1246 | ||
1247 | ||
1248 | /* Convert linear UNIX date to a MS-DOS time/date pair. */ | |
1249 | void | |
1250 | ncp_date_unix2dos(int unix_date, __le16 *time, __le16 *date) | |
1251 | { | |
1252 | int day, year, nl_day, month; | |
1253 | ||
1254 | unix_date = utc2local(unix_date); | |
1255 | *time = cpu_to_le16( | |
1256 | (unix_date % 60) / 2 + (((unix_date / 60) % 60) << 5) + | |
1257 | (((unix_date / 3600) % 24) << 11)); | |
1258 | day = unix_date / 86400 - 3652; | |
1259 | year = day / 365; | |
1260 | if ((year + 3) / 4 + 365 * year > day) | |
1261 | year--; | |
1262 | day -= (year + 3) / 4 + 365 * year; | |
1263 | if (day == 59 && !(year & 3)) { | |
1264 | nl_day = day; | |
1265 | month = 2; | |
1266 | } else { | |
1267 | nl_day = (year & 3) || day <= 59 ? day : day - 1; | |
c5df5913 | 1268 | for (month = 1; month < 12; month++) |
1da177e4 LT |
1269 | if (day_n[month] > nl_day) |
1270 | break; | |
1271 | } | |
1272 | *date = cpu_to_le16(nl_day - day_n[month - 1] + 1 + (month << 5) + (year << 9)); | |
1273 | } |