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
14 #include <linux/time.h>
15 #include <linux/errno.h>
16 #include <linux/stat.h>
17 #include <linux/kernel.h>
18 #include <linux/vmalloc.h>
20 #include <linux/namei.h>
21 #include <asm/uaccess.h>
22 #include <asm/byteorder.h>
26 static void ncp_read_volume_list(struct file *, void *, filldir_t,
27 struct ncp_cache_control *);
28 static void ncp_do_readdir(struct file *, void *, filldir_t,
29 struct ncp_cache_control *);
31 static int ncp_readdir(struct file *, void *, filldir_t);
33 static int ncp_create(struct inode *, struct dentry *, umode_t, bool);
34 static struct dentry *ncp_lookup(struct inode *, struct dentry *, unsigned int);
35 static int ncp_unlink(struct inode *, struct dentry *);
36 static int ncp_mkdir(struct inode *, struct dentry *, umode_t);
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,
41 umode_t mode, dev_t rdev);
42 #if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
43 extern int ncp_symlink(struct inode *, struct dentry *, const char *);
45 #define ncp_symlink NULL
48 const struct file_operations ncp_dir_operations =
50 .llseek = generic_file_llseek,
51 .read = generic_read_dir,
52 .readdir = ncp_readdir,
53 .unlocked_ioctl = ncp_ioctl,
55 .compat_ioctl = ncp_compat_ioctl,
59 const struct inode_operations ncp_dir_inode_operations =
64 .symlink = ncp_symlink,
69 .setattr = ncp_notify_change,
73 * Dentry operations routines
75 static int ncp_lookup_validate(struct dentry *, unsigned int);
76 static int ncp_hash_dentry(const struct dentry *, const struct inode *,
78 static int ncp_compare_dentry(const struct dentry *, const struct inode *,
79 const struct dentry *, const struct inode *,
80 unsigned int, const char *, const struct qstr *);
81 static int ncp_delete_dentry(const struct dentry *);
83 const struct dentry_operations ncp_dentry_operations =
85 .d_revalidate = ncp_lookup_validate,
86 .d_hash = ncp_hash_dentry,
87 .d_compare = ncp_compare_dentry,
88 .d_delete = ncp_delete_dentry,
91 #define ncp_namespace(i) (NCP_SERVER(i)->name_space[NCP_FINFO(i)->volNumber])
93 static inline int ncp_preserve_entry_case(struct inode *i, __u32 nscreator)
95 #ifdef CONFIG_NCPFS_SMALLDOS
96 int ns = ncp_namespace(i);
99 #ifdef CONFIG_NCPFS_OS2_NS
100 || ((ns == NW_NS_OS2) && (nscreator == NW_NS_DOS))
101 #endif /* CONFIG_NCPFS_OS2_NS */
104 #endif /* CONFIG_NCPFS_SMALLDOS */
108 #define ncp_preserve_case(i) (ncp_namespace(i) != NW_NS_DOS)
110 static inline int ncp_case_sensitive(const struct inode *i)
112 #ifdef CONFIG_NCPFS_NFS_NS
113 return ncp_namespace(i) == NW_NS_NFS;
116 #endif /* CONFIG_NCPFS_NFS_NS */
120 * Note: leave the hash unchanged if the directory
124 ncp_hash_dentry(const struct dentry *dentry, const struct inode *inode,
127 if (!ncp_case_sensitive(inode)) {
128 struct super_block *sb = dentry->d_sb;
133 t = NCP_IO_TABLE(sb);
134 hash = init_name_hash();
135 for (i=0; i<this->len ; i++)
136 hash = partial_name_hash(ncp_tolower(t, this->name[i]),
138 this->hash = end_name_hash(hash);
144 ncp_compare_dentry(const struct dentry *parent, const struct inode *pinode,
145 const struct dentry *dentry, const struct inode *inode,
146 unsigned int len, const char *str, const struct qstr *name)
148 if (len != name->len)
151 if (ncp_case_sensitive(pinode))
152 return strncmp(str, name->name, len);
154 return ncp_strnicmp(NCP_IO_TABLE(pinode->i_sb), str, name->name, len);
158 * This is the callback from dput() when d_count is going to 0.
159 * We use this to unhash dentries with bad inodes.
160 * Closing files can be safely postponed until iput() - it's done there anyway.
163 ncp_delete_dentry(const struct dentry * dentry)
165 struct inode *inode = dentry->d_inode;
168 if (is_bad_inode(inode))
172 /* N.B. Unhash negative dentries? */
178 ncp_single_volume(struct ncp_server *server)
180 return (server->m.mounted_vol[0] != '\0');
183 static inline int ncp_is_server_root(struct inode *inode)
185 return (!ncp_single_volume(NCP_SERVER(inode)) &&
186 inode == inode->i_sb->s_root->d_inode);
191 * This is the callback when the dcache has a lookup hit.
195 #ifdef CONFIG_NCPFS_STRONG
196 /* try to delete a readonly file (NW R bit set) */
199 ncp_force_unlink(struct inode *dir, struct dentry* dentry)
202 struct nw_modify_dos_info info;
206 memset(&info, 0, sizeof(info));
208 /* remove the Read-Only flag on the NW server */
209 inode = dentry->d_inode;
211 old_nwattr = NCP_FINFO(inode)->nwattr;
212 info.attributes = old_nwattr & ~(aRONLY|aDELETEINHIBIT|aRENAMEINHIBIT);
213 res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(inode), inode, NULL, DM_ATTRIBUTES, &info);
217 /* now try again the delete operation */
218 res = ncp_del_file_or_subdir2(NCP_SERVER(dir), dentry);
220 if (res) /* delete failed, set R bit again */
222 info.attributes = old_nwattr;
223 res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(inode), inode, NULL, DM_ATTRIBUTES, &info);
230 #endif /* CONFIG_NCPFS_STRONG */
232 #ifdef CONFIG_NCPFS_STRONG
234 ncp_force_rename(struct inode *old_dir, struct dentry* old_dentry, char *_old_name,
235 struct inode *new_dir, struct dentry* new_dentry, char *_new_name)
237 struct nw_modify_dos_info info;
239 struct inode *old_inode = old_dentry->d_inode;
240 __le32 old_nwattr = NCP_FINFO(old_inode)->nwattr;
241 __le32 new_nwattr = 0; /* shut compiler warning */
242 int old_nwattr_changed = 0;
243 int new_nwattr_changed = 0;
245 memset(&info, 0, sizeof(info));
247 /* remove the Read-Only flag on the NW server */
249 info.attributes = old_nwattr & ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
250 res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(old_inode), old_inode, NULL, DM_ATTRIBUTES, &info);
252 old_nwattr_changed = 1;
253 if (new_dentry && new_dentry->d_inode) {
254 new_nwattr = NCP_FINFO(new_dentry->d_inode)->nwattr;
255 info.attributes = new_nwattr & ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
256 res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(new_dir), new_dir, _new_name, DM_ATTRIBUTES, &info);
258 new_nwattr_changed = 1;
260 /* now try again the rename operation */
261 /* but only if something really happened */
262 if (new_nwattr_changed || old_nwattr_changed) {
263 res = ncp_ren_or_mov_file_or_subdir(NCP_SERVER(old_dir),
269 /* file was successfully renamed, so:
270 do not set attributes on old file - it no longer exists
271 copy attributes from old file to new */
272 new_nwattr_changed = old_nwattr_changed;
273 new_nwattr = old_nwattr;
274 old_nwattr_changed = 0;
277 if (old_nwattr_changed) {
278 info.attributes = old_nwattr;
279 res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(old_inode), old_inode, NULL, DM_ATTRIBUTES, &info);
282 if (new_nwattr_changed) {
283 info.attributes = new_nwattr;
284 res2 = ncp_modify_file_or_subdir_dos_info_path(NCP_SERVER(new_dir), new_dir, _new_name, DM_ATTRIBUTES, &info);
289 #endif /* CONFIG_NCPFS_STRONG */
293 ncp_lookup_validate(struct dentry *dentry, unsigned int flags)
295 struct ncp_server *server;
296 struct dentry *parent;
298 struct ncp_entry_info finfo;
299 int res, val = 0, len;
300 __u8 __name[NCP_MAXPATHLEN + 1];
302 if (dentry == dentry->d_sb->s_root)
305 if (flags & LOOKUP_RCU)
308 parent = dget_parent(dentry);
309 dir = parent->d_inode;
311 if (!dentry->d_inode)
314 server = NCP_SERVER(dir);
318 * The default validation is based on dentry age:
319 * We set the max age at mount time. (But each
320 * successful server lookup renews the timestamp.)
322 val = NCP_TEST_AGE(server, dentry);
326 DDPRINTK("ncp_lookup_validate: %s/%s not valid, age=%ld, server lookup\n",
327 dentry->d_parent->d_name.name, dentry->d_name.name,
328 NCP_GET_AGE(dentry));
330 len = sizeof(__name);
331 if (ncp_is_server_root(dir)) {
332 res = ncp_io2vol(server, __name, &len, dentry->d_name.name,
333 dentry->d_name.len, 1);
335 res = ncp_lookup_volume(server, __name, &(finfo.i));
337 ncp_update_known_namespace(server, finfo.i.volNumber, NULL);
340 res = ncp_io2vol(server, __name, &len, dentry->d_name.name,
341 dentry->d_name.len, !ncp_preserve_case(dir));
343 res = ncp_obtain_info(server, dir, __name, &(finfo.i));
345 finfo.volume = finfo.i.volNumber;
346 DDPRINTK("ncp_lookup_validate: looked for %s/%s, res=%d\n",
347 dentry->d_parent->d_name.name, __name, res);
349 * If we didn't find it, or if it has a different dirEntNum to
350 * what we remember, it's not valid any more.
353 struct inode *inode = dentry->d_inode;
355 mutex_lock(&inode->i_mutex);
356 if (finfo.i.dirEntNum == NCP_FINFO(inode)->dirEntNum) {
357 ncp_new_dentry(dentry);
360 DDPRINTK("ncp_lookup_validate: found, but dirEntNum changed\n");
362 ncp_update_inode2(inode, &finfo);
363 mutex_unlock(&inode->i_mutex);
367 DDPRINTK("ncp_lookup_validate: result=%d\n", val);
372 static struct dentry *
373 ncp_dget_fpos(struct dentry *dentry, struct dentry *parent, unsigned long fpos)
375 struct dentry *dent = dentry;
376 struct list_head *next;
378 if (d_validate(dent, parent)) {
379 if (dent->d_name.len <= NCP_MAXPATHLEN &&
380 (unsigned long)dent->d_fsdata == fpos) {
381 if (!dent->d_inode) {
390 /* If a pointer is invalid, we search the dentry. */
391 spin_lock(&parent->d_lock);
392 next = parent->d_subdirs.next;
393 while (next != &parent->d_subdirs) {
394 dent = list_entry(next, struct dentry, d_u.d_child);
395 if ((unsigned long)dent->d_fsdata == fpos) {
400 spin_unlock(&parent->d_lock);
405 spin_unlock(&parent->d_lock);
412 static time_t ncp_obtain_mtime(struct dentry *dentry)
414 struct inode *inode = dentry->d_inode;
415 struct ncp_server *server = NCP_SERVER(inode);
416 struct nw_info_struct i;
418 if (!ncp_conn_valid(server) || ncp_is_server_root(inode))
421 if (ncp_obtain_info(server, inode, NULL, &i))
424 return ncp_date_dos2unix(i.modifyTime, i.modifyDate);
427 static int ncp_readdir(struct file *filp, void *dirent, filldir_t filldir)
429 struct dentry *dentry = filp->f_path.dentry;
430 struct inode *inode = dentry->d_inode;
431 struct page *page = NULL;
432 struct ncp_server *server = NCP_SERVER(inode);
433 union ncp_dir_cache *cache = NULL;
434 struct ncp_cache_control ctl;
435 int result, mtime_valid = 0;
441 DDPRINTK("ncp_readdir: reading %s/%s, pos=%d\n",
442 dentry->d_parent->d_name.name, dentry->d_name.name,
446 /* Do not generate '.' and '..' when server is dead. */
447 if (!ncp_conn_valid(server))
451 if (filp->f_pos == 0) {
452 if (filldir(dirent, ".", 1, 0, inode->i_ino, DT_DIR))
456 if (filp->f_pos == 1) {
457 if (filldir(dirent, "..", 2, 1, parent_ino(dentry), DT_DIR))
462 page = grab_cache_page(&inode->i_data, 0);
466 ctl.cache = cache = kmap(page);
467 ctl.head = cache->head;
469 if (!PageUptodate(page) || !ctl.head.eof)
472 if (filp->f_pos == 2) {
473 if (jiffies - ctl.head.time >= NCP_MAX_AGE(server))
476 mtime = ncp_obtain_mtime(dentry);
478 if ((!mtime) || (mtime != ctl.head.mtime))
482 if (filp->f_pos > ctl.head.end)
485 ctl.fpos = filp->f_pos + (NCP_DIRCACHE_START - 2);
486 ctl.ofs = ctl.fpos / NCP_DIRCACHE_SIZE;
487 ctl.idx = ctl.fpos % NCP_DIRCACHE_SIZE;
491 ctl.page = find_lock_page(&inode->i_data, ctl.ofs);
494 ctl.cache = kmap(ctl.page);
495 if (!PageUptodate(ctl.page))
498 while (ctl.idx < NCP_DIRCACHE_SIZE) {
502 dent = ncp_dget_fpos(ctl.cache->dentry[ctl.idx],
503 dentry, filp->f_pos);
506 res = filldir(dirent, dent->d_name.name,
507 dent->d_name.len, filp->f_pos,
508 dent->d_inode->i_ino, DT_UNKNOWN);
514 if (filp->f_pos > ctl.head.end)
519 SetPageUptodate(ctl.page);
520 unlock_page(ctl.page);
521 page_cache_release(ctl.page);
530 unlock_page(ctl.page);
531 page_cache_release(ctl.page);
536 ncp_invalidate_dircache_entries(dentry);
538 mtime = ncp_obtain_mtime(dentry);
541 ctl.head.mtime = mtime;
542 ctl.head.time = jiffies;
546 ctl.idx = NCP_DIRCACHE_START;
550 if (ncp_is_server_root(inode)) {
551 ncp_read_volume_list(filp, dirent, filldir, &ctl);
553 ncp_do_readdir(filp, dirent, filldir, &ctl);
555 ctl.head.end = ctl.fpos - 1;
556 ctl.head.eof = ctl.valid;
560 SetPageUptodate(ctl.page);
561 unlock_page(ctl.page);
562 page_cache_release(ctl.page);
565 cache->head = ctl.head;
567 SetPageUptodate(page);
569 page_cache_release(page);
576 ncp_fill_cache(struct file *filp, void *dirent, filldir_t filldir,
577 struct ncp_cache_control *ctrl, struct ncp_entry_info *entry,
580 struct dentry *newdent, *dentry = filp->f_path.dentry;
581 struct inode *dir = dentry->d_inode;
582 struct ncp_cache_control ctl = *ctrl;
587 __u8 __name[NCP_MAXPATHLEN + 1];
589 qname.len = sizeof(__name);
590 if (ncp_vol2io(NCP_SERVER(dir), __name, &qname.len,
591 entry->i.entryName, entry->i.nameLen,
592 !ncp_preserve_entry_case(dir, entry->i.NSCreator)))
593 return 1; /* I'm not sure */
596 qname.hash = full_name_hash(qname.name, qname.len);
598 if (dentry->d_op && dentry->d_op->d_hash)
599 if (dentry->d_op->d_hash(dentry, dentry->d_inode, &qname) != 0)
602 newdent = d_lookup(dentry, &qname);
605 newdent = d_alloc(dentry, &qname);
611 /* If case sensitivity changed for this volume, all entries below this one
612 should be thrown away. This entry itself is not affected, as its case
613 sensitivity is controlled by its own parent. */
615 shrink_dcache_parent(newdent);
618 * NetWare's OS2 namespace is case preserving yet case
619 * insensitive. So we update dentry's name as received from
620 * server. Parent dir's i_mutex is locked because we're in
623 dentry_update_name_case(newdent, &qname);
626 if (!newdent->d_inode) {
630 entry->ino = iunique(dir->i_sb, 2);
631 inode = ncp_iget(dir->i_sb, entry);
633 d_instantiate(newdent, inode);
638 struct inode *inode = newdent->d_inode;
640 mutex_lock_nested(&inode->i_mutex, I_MUTEX_CHILD);
641 ncp_update_inode2(inode, entry);
642 mutex_unlock(&inode->i_mutex);
645 if (newdent->d_inode) {
646 ino = newdent->d_inode->i_ino;
647 newdent->d_fsdata = (void *) ctl.fpos;
648 ncp_new_dentry(newdent);
651 if (ctl.idx >= NCP_DIRCACHE_SIZE) {
654 SetPageUptodate(ctl.page);
655 unlock_page(ctl.page);
656 page_cache_release(ctl.page);
659 ctl.idx -= NCP_DIRCACHE_SIZE;
661 ctl.page = grab_cache_page(&dir->i_data, ctl.ofs);
663 ctl.cache = kmap(ctl.page);
666 ctl.cache->dentry[ctl.idx] = newdent;
673 if (!ctl.filled && (ctl.fpos == filp->f_pos)) {
675 ino = find_inode_number(dentry, &qname);
677 ino = iunique(dir->i_sb, 2);
678 ctl.filled = filldir(dirent, qname.name, qname.len,
679 filp->f_pos, ino, DT_UNKNOWN);
686 return (ctl.valid || !ctl.filled);
690 ncp_read_volume_list(struct file *filp, void *dirent, filldir_t filldir,
691 struct ncp_cache_control *ctl)
693 struct dentry *dentry = filp->f_path.dentry;
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;
700 DPRINTK("ncp_read_volume_list: pos=%ld\n",
701 (unsigned long) filp->f_pos);
703 for (i = 0; i < NCP_NUMBER_OF_VOLUMES; i++) {
706 if (ncp_get_volume_info_with_number(server, i, &info) != 0)
708 if (!strlen(info.volume_name))
711 DPRINTK("ncp_read_volume_list: found vol: %s\n",
714 if (ncp_lookup_volume(server, info.volume_name,
716 DPRINTK("ncpfs: could not lookup vol %s\n",
720 inval_dentry = ncp_update_known_namespace(server, entry.i.volNumber, NULL);
721 entry.volume = entry.i.volNumber;
722 if (!ncp_fill_cache(filp, dirent, filldir, ctl, &entry, inval_dentry))
728 ncp_do_readdir(struct file *filp, void *dirent, filldir_t filldir,
729 struct ncp_cache_control *ctl)
731 struct dentry *dentry = filp->f_path.dentry;
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;
741 DPRINTK("ncp_do_readdir: %s/%s, fpos=%ld\n",
742 dentry->d_parent->d_name.name, dentry->d_name.name,
743 (unsigned long) filp->f_pos);
744 PPRINTK("ncp_do_readdir: init %s, volnum=%d, dirent=%u\n",
745 dentry->d_name.name, NCP_FINFO(dir)->volNumber,
746 NCP_FINFO(dir)->dirEntNum);
748 err = ncp_initialize_search(server, dir, &seq);
750 DPRINTK("ncp_do_readdir: init failed, err=%d\n", err);
753 /* We MUST NOT use server->buffer_size handshaked with server if we are
754 using UDP, as for UDP server uses max. buffer size determined by
755 MTU, and for TCP server uses hardwired value 65KB (== 66560 bytes).
756 So we use 128KB, just to be sure, as there is no way how to know
757 this value in advance. */
759 buf = vmalloc(bufsize);
767 err = ncp_search_for_fileset(server, &seq, &more, &cnt, buf, bufsize, &rpl, &rpls);
770 if (!cnt) /* prevent endless loop */
775 if (rpls < offsetof(struct nw_info_struct, entryName))
776 break; /* short packet */
777 ncp_extract_file_info(rpl, &entry.i);
778 onerpl = offsetof(struct nw_info_struct, entryName) + entry.i.nameLen;
780 break; /* short packet */
781 (void)ncp_obtain_nfs_info(server, &entry.i);
784 entry.volume = entry.i.volNumber;
785 if (!ncp_fill_cache(filp, dirent, filldir, ctl, &entry, 0))
793 int ncp_conn_logged_in(struct super_block *sb)
795 struct ncp_server* server = NCP_SBP(sb);
798 if (ncp_single_volume(server)) {
804 __u8 __name[NCP_MAXPATHLEN + 1];
806 len = sizeof(__name);
807 result = ncp_io2vol(server, __name, &len, server->m.mounted_vol,
808 strlen(server->m.mounted_vol), 1);
812 if (ncp_get_volume_root(server, __name, &volNumber, &dirEntNum, &DosDirNum)) {
813 PPRINTK("ncp_conn_logged_in: %s not found\n",
814 server->m.mounted_vol);
819 struct inode* ino = dent->d_inode;
821 ncp_update_known_namespace(server, volNumber, NULL);
822 NCP_FINFO(ino)->volNumber = volNumber;
823 NCP_FINFO(ino)->dirEntNum = dirEntNum;
824 NCP_FINFO(ino)->DosDirNum = DosDirNum;
827 DPRINTK("ncpfs: sb->s_root->d_inode == NULL!\n");
830 DPRINTK("ncpfs: sb->s_root == NULL!\n");
839 static struct dentry *ncp_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
841 struct ncp_server *server = NCP_SERVER(dir);
842 struct inode *inode = NULL;
843 struct ncp_entry_info finfo;
845 __u8 __name[NCP_MAXPATHLEN + 1];
848 if (!ncp_conn_valid(server))
851 PPRINTK("ncp_lookup: server lookup for %s/%s\n",
852 dentry->d_parent->d_name.name, dentry->d_name.name);
854 len = sizeof(__name);
855 if (ncp_is_server_root(dir)) {
856 res = ncp_io2vol(server, __name, &len, dentry->d_name.name,
857 dentry->d_name.len, 1);
859 res = ncp_lookup_volume(server, __name, &(finfo.i));
861 ncp_update_known_namespace(server, finfo.i.volNumber, NULL);
863 res = ncp_io2vol(server, __name, &len, dentry->d_name.name,
864 dentry->d_name.len, !ncp_preserve_case(dir));
866 res = ncp_obtain_info(server, dir, __name, &(finfo.i));
868 PPRINTK("ncp_lookup: looked for %s/%s, res=%d\n",
869 dentry->d_parent->d_name.name, __name, res);
871 * If we didn't find an entry, make a negative dentry.
877 * Create an inode for the entry.
880 finfo.ino = iunique(dir->i_sb, 2);
881 finfo.volume = finfo.i.volNumber;
883 inode = ncp_iget(dir->i_sb, &finfo);
886 ncp_new_dentry(dentry);
888 d_add(dentry, inode);
893 PPRINTK("ncp_lookup: result=%d\n", error);
894 return ERR_PTR(error);
898 * This code is common to create, mkdir, and mknod.
900 static int ncp_instantiate(struct inode *dir, struct dentry *dentry,
901 struct ncp_entry_info *finfo)
906 finfo->ino = iunique(dir->i_sb, 2);
907 inode = ncp_iget(dir->i_sb, finfo);
910 d_instantiate(dentry,inode);
916 PPRINTK("ncp_instantiate: %s/%s failed, closing file\n",
917 dentry->d_parent->d_name.name, dentry->d_name.name);
918 ncp_close_file(NCP_SERVER(dir), finfo->file_handle);
922 int ncp_create_new(struct inode *dir, struct dentry *dentry, umode_t mode,
923 dev_t rdev, __le32 attributes)
925 struct ncp_server *server = NCP_SERVER(dir);
926 struct ncp_entry_info finfo;
927 int error, result, len;
929 __u8 __name[NCP_MAXPATHLEN + 1];
931 PPRINTK("ncp_create_new: creating %s/%s, mode=%hx\n",
932 dentry->d_parent->d_name.name, dentry->d_name.name, mode);
934 ncp_age_dentry(server, dentry);
935 len = sizeof(__name);
936 error = ncp_io2vol(server, __name, &len, dentry->d_name.name,
937 dentry->d_name.len, !ncp_preserve_case(dir));
944 (server->m.flags & NCP_MOUNT_EXTRAS) &&
946 attributes |= aSYSTEM | aSHARED;
948 result = ncp_open_create_file_or_subdir(server, dir, __name,
949 OC_MODE_CREATE | OC_MODE_OPEN | OC_MODE_REPLACE,
950 attributes, AR_READ | AR_WRITE, &finfo);
953 result = ncp_open_create_file_or_subdir(server, dir, __name,
954 OC_MODE_CREATE | OC_MODE_OPEN | OC_MODE_REPLACE,
955 attributes, AR_WRITE, &finfo);
958 error = -ENAMETOOLONG;
961 DPRINTK("ncp_create: %s/%s failed\n",
962 dentry->d_parent->d_name.name, dentry->d_name.name);
967 finfo.access = opmode;
968 if (ncp_is_nfs_extras(server, finfo.volume)) {
969 finfo.i.nfs.mode = mode;
970 finfo.i.nfs.rdev = new_encode_dev(rdev);
971 if (ncp_modify_nfs_info(server, finfo.volume,
973 mode, new_encode_dev(rdev)) != 0)
977 error = ncp_instantiate(dir, dentry, &finfo);
982 static int ncp_create(struct inode *dir, struct dentry *dentry, umode_t mode,
985 return ncp_create_new(dir, dentry, mode, 0, 0);
988 static int ncp_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
990 struct ncp_entry_info finfo;
991 struct ncp_server *server = NCP_SERVER(dir);
993 __u8 __name[NCP_MAXPATHLEN + 1];
995 DPRINTK("ncp_mkdir: making %s/%s\n",
996 dentry->d_parent->d_name.name, dentry->d_name.name);
998 ncp_age_dentry(server, dentry);
999 len = sizeof(__name);
1000 error = ncp_io2vol(server, __name, &len, dentry->d_name.name,
1001 dentry->d_name.len, !ncp_preserve_case(dir));
1005 error = ncp_open_create_file_or_subdir(server, dir, __name,
1006 OC_MODE_CREATE, aDIR,
1007 cpu_to_le16(0xffff),
1010 if (ncp_is_nfs_extras(server, finfo.volume)) {
1012 finfo.i.nfs.mode = mode;
1013 if (ncp_modify_nfs_info(server,
1019 error = ncp_instantiate(dir, dentry, &finfo);
1020 } else if (error > 0) {
1027 static int ncp_rmdir(struct inode *dir, struct dentry *dentry)
1029 struct ncp_server *server = NCP_SERVER(dir);
1030 int error, result, len;
1031 __u8 __name[NCP_MAXPATHLEN + 1];
1033 DPRINTK("ncp_rmdir: removing %s/%s\n",
1034 dentry->d_parent->d_name.name, dentry->d_name.name);
1037 * fail with EBUSY if there are still references to this
1040 dentry_unhash(dentry);
1042 if (!d_unhashed(dentry))
1045 len = sizeof(__name);
1046 error = ncp_io2vol(server, __name, &len, dentry->d_name.name,
1047 dentry->d_name.len, !ncp_preserve_case(dir));
1051 result = ncp_del_file_or_subdir(server, dir, __name);
1056 case 0x85: /* unauthorized to delete file */
1057 case 0x8A: /* unauthorized to delete file */
1061 case 0x90: /* read only */
1064 case 0x9F: /* in use by another client */
1067 case 0xA0: /* directory not empty */
1070 case 0xFF: /* someone deleted file */
1074 error = result < 0 ? result : -EACCES;
1081 static int ncp_unlink(struct inode *dir, struct dentry *dentry)
1083 struct inode *inode = dentry->d_inode;
1084 struct ncp_server *server;
1087 server = NCP_SERVER(dir);
1088 DPRINTK("ncp_unlink: unlinking %s/%s\n",
1089 dentry->d_parent->d_name.name, dentry->d_name.name);
1092 * Check whether to close the file ...
1095 PPRINTK("ncp_unlink: closing file\n");
1096 ncp_make_closed(inode);
1099 error = ncp_del_file_or_subdir2(server, dentry);
1100 #ifdef CONFIG_NCPFS_STRONG
1101 /* 9C is Invalid path.. It should be 8F, 90 - read only, but
1103 if ((error == 0x9C || error == 0x90) && server->m.flags & NCP_MOUNT_STRONG) { /* R/O */
1104 error = ncp_force_unlink(dir, dentry);
1109 DPRINTK("ncp: removed %s/%s\n",
1110 dentry->d_parent->d_name.name, dentry->d_name.name);
1116 case 0x8D: /* some files in use */
1117 case 0x8E: /* all files in use */
1120 case 0x8F: /* some read only */
1121 case 0x90: /* all read only */
1122 case 0x9C: /* !!! returned when in-use or read-only by NW4 */
1129 error = error < 0 ? error : -EACCES;
1135 static int ncp_rename(struct inode *old_dir, struct dentry *old_dentry,
1136 struct inode *new_dir, struct dentry *new_dentry)
1138 struct ncp_server *server = NCP_SERVER(old_dir);
1140 int old_len, new_len;
1141 __u8 __old_name[NCP_MAXPATHLEN + 1], __new_name[NCP_MAXPATHLEN + 1];
1143 DPRINTK("ncp_rename: %s/%s to %s/%s\n",
1144 old_dentry->d_parent->d_name.name, old_dentry->d_name.name,
1145 new_dentry->d_parent->d_name.name, new_dentry->d_name.name);
1147 if (new_dentry->d_inode && S_ISDIR(new_dentry->d_inode->i_mode)) {
1149 * fail with EBUSY if there are still references to this
1152 dentry_unhash(new_dentry);
1154 if (!d_unhashed(new_dentry))
1158 ncp_age_dentry(server, old_dentry);
1159 ncp_age_dentry(server, new_dentry);
1161 old_len = sizeof(__old_name);
1162 error = ncp_io2vol(server, __old_name, &old_len,
1163 old_dentry->d_name.name, old_dentry->d_name.len,
1164 !ncp_preserve_case(old_dir));
1168 new_len = sizeof(__new_name);
1169 error = ncp_io2vol(server, __new_name, &new_len,
1170 new_dentry->d_name.name, new_dentry->d_name.len,
1171 !ncp_preserve_case(new_dir));
1175 error = ncp_ren_or_mov_file_or_subdir(server, old_dir, __old_name,
1176 new_dir, __new_name);
1177 #ifdef CONFIG_NCPFS_STRONG
1178 if ((error == 0x90 || error == 0x8B || error == -EACCES) &&
1179 server->m.flags & NCP_MOUNT_STRONG) { /* RO */
1180 error = ncp_force_rename(old_dir, old_dentry, __old_name,
1181 new_dir, new_dentry, __new_name);
1186 DPRINTK("ncp renamed %s -> %s.\n",
1187 old_dentry->d_name.name,new_dentry->d_name.name);
1190 error = -ENAMETOOLONG;
1196 error = error < 0 ? error : -EACCES;
1203 static int ncp_mknod(struct inode * dir, struct dentry *dentry,
1204 umode_t mode, dev_t rdev)
1206 if (!new_valid_dev(rdev))
1208 if (ncp_is_nfs_extras(NCP_SERVER(dir), NCP_FINFO(dir)->volNumber)) {
1209 DPRINTK(KERN_DEBUG "ncp_mknod: mode = 0%ho\n", mode);
1210 return ncp_create_new(dir, dentry, mode, rdev, 0);
1212 return -EPERM; /* Strange, but true */
1215 /* The following routines are taken directly from msdos-fs */
1217 /* Linear day numbers of the respective 1sts in non-leap years. */
1219 static int day_n[] =
1220 {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0};
1221 /* Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec */
1224 extern struct timezone sys_tz;
1226 static int utc2local(int time)
1228 return time - sys_tz.tz_minuteswest * 60;
1231 static int local2utc(int time)
1233 return time + sys_tz.tz_minuteswest * 60;
1236 /* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */
1238 ncp_date_dos2unix(__le16 t, __le16 d)
1240 unsigned short time = le16_to_cpu(t), date = le16_to_cpu(d);
1241 int month, year, secs;
1243 /* first subtract and mask after that... Otherwise, if
1244 date == 0, bad things happen */
1245 month = ((date >> 5) - 1) & 15;
1247 secs = (time & 31) * 2 + 60 * ((time >> 5) & 63) + (time >> 11) * 3600 +
1248 86400 * ((date & 31) - 1 + day_n[month] + (year / 4) +
1249 year * 365 - ((year & 3) == 0 && month < 2 ? 1 : 0) + 3653);
1250 /* days since 1.1.70 plus 80's leap day */
1251 return local2utc(secs);
1255 /* Convert linear UNIX date to a MS-DOS time/date pair. */
1257 ncp_date_unix2dos(int unix_date, __le16 *time, __le16 *date)
1259 int day, year, nl_day, month;
1261 unix_date = utc2local(unix_date);
1262 *time = cpu_to_le16(
1263 (unix_date % 60) / 2 + (((unix_date / 60) % 60) << 5) +
1264 (((unix_date / 3600) % 24) << 11));
1265 day = unix_date / 86400 - 3652;
1267 if ((year + 3) / 4 + 365 * year > day)
1269 day -= (year + 3) / 4 + 365 * year;
1270 if (day == 59 && !(year & 3)) {
1274 nl_day = (year & 3) || day <= 59 ? day : day - 1;
1275 for (month = 1; month < 12; month++)
1276 if (day_n[month] > nl_day)
1279 *date = cpu_to_le16(nl_day - day_n[month - 1] + 1 + (month << 5) + (year << 9));