fs/ncpfs/inode.c

   1 /*
   2  *  inode.c
   3  *
   4  *  Copyright (C) 1995, 1996 by Volker Lendecke
   5  *  Modified for big endian by J.F. Chadima and David S. Miller
   6  *  Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
   7  *  Modified 1998 Wolfram Pienkoss for NLS
   8  *  Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info
   9  *
  10  */
  11
  12 #include <linux/module.h>
  13
  14 #include <asm/system.h>
  15 #include <asm/uaccess.h>
  16 #include <asm/byteorder.h>
  17
  18 #include <linux/time.h>
  19 #include <linux/kernel.h>
  20 #include <linux/mm.h>
  21 #include <linux/string.h>
  22 #include <linux/stat.h>
  23 #include <linux/errno.h>
  24 #include <linux/file.h>
  25 #include <linux/fcntl.h>
  26 #include <linux/slab.h>
  27 #include <linux/vmalloc.h>
  28 #include <linux/init.h>
  29 #include <linux/smp_lock.h>
  30 #include <linux/vfs.h>
  31
  32 #include <linux/ncp_fs.h>
  33
  34 #include <net/sock.h>
  35
  36 #include "ncplib_kernel.h"
  37 #include "getopt.h"
  38
  39 static void ncp_delete_inode(struct inode *);
  40 static void ncp_put_super(struct super_block *);
  41 static int  ncp_statfs(struct dentry *, struct kstatfs *);
  42
  43 static kmem_cache_t * ncp_inode_cachep;
  44
  45 static struct inode *ncp_alloc_inode(struct super_block *sb)
  46 {
  47         struct ncp_inode_info *ei;
  48         ei = (struct ncp_inode_info *)kmem_cache_alloc(ncp_inode_cachep, SLAB_KERNEL);
  49         if (!ei)
  50                 return NULL;
  51         return &ei->vfs_inode;
  52 }
  53
  54 static void ncp_destroy_inode(struct inode *inode)
  55 {
  56         kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode));
  57 }
  58
  59 static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
  60 {
  61         struct ncp_inode_info *ei = (struct ncp_inode_info *) foo;
  62
  63         if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
  64             SLAB_CTOR_CONSTRUCTOR) {
  65                 mutex_init(&ei->open_mutex);
  66                 inode_init_once(&ei->vfs_inode);
  67         }
  68 }
  69
  70 static int init_inodecache(void)
  71 {
  72         ncp_inode_cachep = kmem_cache_create("ncp_inode_cache",
  73                                              sizeof(struct ncp_inode_info),
  74                                              0, (SLAB_RECLAIM_ACCOUNT|
  75                                                 SLAB_MEM_SPREAD),
  76                                              init_once, NULL);
  77         if (ncp_inode_cachep == NULL)
  78                 return -ENOMEM;
  79         return 0;
  80 }
  81
  82 static void destroy_inodecache(void)
  83 {
  84         if (kmem_cache_destroy(ncp_inode_cachep))
  85                 printk(KERN_INFO "ncp_inode_cache: not all structures were freed\n");
  86 }
  87
  88 static int ncp_remount(struct super_block *sb, int *flags, char* data)
  89 {
  90         *flags |= MS_NODIRATIME;
  91         return 0;
  92 }
  93
  94 static struct super_operations ncp_sops =
  95 {
  96         .alloc_inode    = ncp_alloc_inode,
  97         .destroy_inode  = ncp_destroy_inode,
  98         .drop_inode     = generic_delete_inode,
  99         .delete_inode   = ncp_delete_inode,
 100         .put_super      = ncp_put_super,
 101         .statfs         = ncp_statfs,
 102         .remount_fs     = ncp_remount,
 103 };
 104
 105 extern struct dentry_operations ncp_root_dentry_operations;
 106 #if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
 107 extern const struct address_space_operations ncp_symlink_aops;
 108 extern int ncp_symlink(struct inode*, struct dentry*, const char*);
 109 #endif
 110
 111 /*
 112  * Fill in the ncpfs-specific information in the inode.
 113  */
 114 static void ncp_update_dirent(struct inode *inode, struct ncp_entry_info *nwinfo)
 115 {
 116         NCP_FINFO(inode)->DosDirNum = nwinfo->i.DosDirNum;
 117         NCP_FINFO(inode)->dirEntNum = nwinfo->i.dirEntNum;
 118         NCP_FINFO(inode)->volNumber = nwinfo->volume;
 119 }
 120
 121 void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo)
 122 {
 123         ncp_update_dirent(inode, nwinfo);
 124         NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
 125         NCP_FINFO(inode)->access = nwinfo->access;
 126         memcpy(NCP_FINFO(inode)->file_handle, nwinfo->file_handle,
 127                         sizeof(nwinfo->file_handle));
 128         DPRINTK("ncp_update_inode: updated %s, volnum=%d, dirent=%u\n",
 129                 nwinfo->i.entryName, NCP_FINFO(inode)->volNumber,
 130                 NCP_FINFO(inode)->dirEntNum);
 131 }
 132
 133 static void ncp_update_dates(struct inode *inode, struct nw_info_struct *nwi)
 134 {
 135         /* NFS namespace mode overrides others if it's set. */
 136         DPRINTK(KERN_DEBUG "ncp_update_dates_and_mode: (%s) nfs.mode=0%o\n",
 137                 nwi->entryName, nwi->nfs.mode);
 138         if (nwi->nfs.mode) {
 139                 /* XXX Security? */
 140                 inode->i_mode = nwi->nfs.mode;
 141         }
 142
 143         inode->i_blocks = (inode->i_size + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT;
 144
 145         inode->i_mtime.tv_sec = ncp_date_dos2unix(nwi->modifyTime, nwi->modifyDate);
 146         inode->i_ctime.tv_sec = ncp_date_dos2unix(nwi->creationTime, nwi->creationDate);
 147         inode->i_atime.tv_sec = ncp_date_dos2unix(0, nwi->lastAccessDate);
 148         inode->i_atime.tv_nsec = 0;
 149         inode->i_mtime.tv_nsec = 0;
 150         inode->i_ctime.tv_nsec = 0;
 151 }
 152
 153 static void ncp_update_attrs(struct inode *inode, struct ncp_entry_info *nwinfo)
 154 {
 155         struct nw_info_struct *nwi = &nwinfo->i;
 156         struct ncp_server *server = NCP_SERVER(inode);
 157
 158         if (nwi->attributes & aDIR) {
 159                 inode->i_mode = server->m.dir_mode;
 160                 /* for directories dataStreamSize seems to be some
 161                    Object ID ??? */
 162                 inode->i_size = NCP_BLOCK_SIZE;
 163         } else {
 164                 inode->i_mode = server->m.file_mode;
 165                 inode->i_size = le32_to_cpu(nwi->dataStreamSize);
 166 #ifdef CONFIG_NCPFS_EXTRAS
 167                 if ((server->m.flags & (NCP_MOUNT_EXTRAS|NCP_MOUNT_SYMLINKS))
 168                  && (nwi->attributes & aSHARED)) {
 169                         switch (nwi->attributes & (aHIDDEN|aSYSTEM)) {
 170                                 case aHIDDEN:
 171                                         if (server->m.flags & NCP_MOUNT_SYMLINKS) {
 172                                                 if (/* (inode->i_size >= NCP_MIN_SYMLINK_SIZE)
 173                                                  && */ (inode->i_size <= NCP_MAX_SYMLINK_SIZE)) {
 174                                                         inode->i_mode = (inode->i_mode & ~S_IFMT) | S_IFLNK;
 175                                                         NCP_FINFO(inode)->flags |= NCPI_KLUDGE_SYMLINK;
 176                                                         break;
 177                                                 }
 178                                         }
 179                                         /* FALLTHROUGH */
 180                                 case 0:
 181                                         if (server->m.flags & NCP_MOUNT_EXTRAS)
 182                                                 inode->i_mode |= S_IRUGO;
 183                                         break;
 184                                 case aSYSTEM:
 185                                         if (server->m.flags & NCP_MOUNT_EXTRAS)
 186                                                 inode->i_mode |= (inode->i_mode >> 2) & S_IXUGO;
 187                                         break;
 188                                 /* case aSYSTEM|aHIDDEN: */
 189                                 default:
 190                                         /* reserved combination */
 191                                         break;
 192                         }
 193                 }
 194 #endif
 195         }
 196         if (nwi->attributes & aRONLY) inode->i_mode &= ~S_IWUGO;
 197 }
 198
 199 void ncp_update_inode2(struct inode* inode, struct ncp_entry_info *nwinfo)
 200 {
 201         NCP_FINFO(inode)->flags = 0;
 202         if (!atomic_read(&NCP_FINFO(inode)->opened)) {
 203                 NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
 204                 ncp_update_attrs(inode, nwinfo);
 205         }
 206
 207         ncp_update_dates(inode, &nwinfo->i);
 208         ncp_update_dirent(inode, nwinfo);
 209 }
 210
 211 /*
 212  * Fill in the inode based on the ncp_entry_info structure.
 213  */
 214 static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo)
 215 {
 216         struct ncp_server *server = NCP_SERVER(inode);
 217
 218         NCP_FINFO(inode)->flags = 0;
 219
 220         ncp_update_attrs(inode, nwinfo);
 221
 222         DDPRINTK("ncp_read_inode: inode->i_mode = %u\n", inode->i_mode);
 223
 224         inode->i_nlink = 1;
 225         inode->i_uid = server->m.uid;
 226         inode->i_gid = server->m.gid;
 227
 228         ncp_update_dates(inode, &nwinfo->i);
 229         ncp_update_inode(inode, nwinfo);
 230 }
 231
 232 #if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
 233 static struct inode_operations ncp_symlink_inode_operations = {
 234         .readlink       = generic_readlink,
 235         .follow_link    = page_follow_link_light,
 236         .put_link       = page_put_link,
 237         .setattr        = ncp_notify_change,
 238 };
 239 #endif
 240
 241 /*
 242  * Get a new inode.
 243  */
 244 struct inode *
 245 ncp_iget(struct super_block *sb, struct ncp_entry_info *info)
 246 {
 247         struct inode *inode;
 248
 249         if (info == NULL) {
 250                 printk(KERN_ERR "ncp_iget: info is NULL\n");
 251                 return NULL;
 252         }
 253
 254         inode = new_inode(sb);
 255         if (inode) {
 256                 atomic_set(&NCP_FINFO(inode)->opened, info->opened);
 257
 258                 inode->i_ino = info->ino;
 259                 ncp_set_attr(inode, info);
 260                 if (S_ISREG(inode->i_mode)) {
 261                         inode->i_op = &ncp_file_inode_operations;
 262                         inode->i_fop = &ncp_file_operations;
 263                 } else if (S_ISDIR(inode->i_mode)) {
 264                         inode->i_op = &ncp_dir_inode_operations;
 265                         inode->i_fop = &ncp_dir_operations;
 266 #ifdef CONFIG_NCPFS_NFS_NS
 267                 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
 268                         init_special_inode(inode, inode->i_mode,
 269                                 new_decode_dev(info->i.nfs.rdev));
 270 #endif
 271 #if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
 272                 } else if (S_ISLNK(inode->i_mode)) {
 273                         inode->i_op = &ncp_symlink_inode_operations;
 274                         inode->i_data.a_ops = &ncp_symlink_aops;
 275 #endif
 276                 } else {
 277                         make_bad_inode(inode);
 278                 }
 279                 insert_inode_hash(inode);
 280         } else
 281                 printk(KERN_ERR "ncp_iget: iget failed!\n");
 282         return inode;
 283 }
 284
 285 static void
 286 ncp_delete_inode(struct inode *inode)
 287 {
 288         truncate_inode_pages(&inode->i_data, 0);
 289
 290         if (S_ISDIR(inode->i_mode)) {
 291                 DDPRINTK("ncp_delete_inode: put directory %ld\n", inode->i_ino);
 292         }
 293
 294         if (ncp_make_closed(inode) != 0) {
 295                 /* We can't do anything but complain. */
 296                 printk(KERN_ERR "ncp_delete_inode: could not close\n");
 297         }
 298         clear_inode(inode);
 299 }
 300
 301 static void ncp_stop_tasks(struct ncp_server *server) {
 302         struct sock* sk = server->ncp_sock->sk;
 303
 304         sk->sk_error_report = server->error_report;
 305         sk->sk_data_ready   = server->data_ready;
 306         sk->sk_write_space  = server->write_space;
 307         del_timer_sync(&server->timeout_tm);
 308         flush_scheduled_work();
 309 }
 310
 311 static const struct ncp_option ncp_opts[] = {
 312         { "uid",        OPT_INT,        'u' },
 313         { "gid",        OPT_INT,        'g' },
 314         { "owner",      OPT_INT,        'o' },
 315         { "mode",       OPT_INT,        'm' },
 316         { "dirmode",    OPT_INT,        'd' },
 317         { "timeout",    OPT_INT,        't' },
 318         { "retry",      OPT_INT,        'r' },
 319         { "flags",      OPT_INT,        'f' },
 320         { "wdogpid",    OPT_INT,        'w' },
 321         { "ncpfd",      OPT_INT,        'n' },
 322         { "infofd",     OPT_INT,        'i' },  /* v5 */
 323         { "version",    OPT_INT,        'v' },
 324         { NULL,         0,              0 } };
 325
 326 static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) {
 327         int optval;
 328         char *optarg;
 329         unsigned long optint;
 330         int version = 0;
 331
 332         data->flags = 0;
 333         data->int_flags = 0;
 334         data->mounted_uid = 0;
 335         data->wdog_pid = -1;
 336         data->ncp_fd = ~0;
 337         data->time_out = 10;
 338         data->retry_count = 20;
 339         data->uid = 0;
 340         data->gid = 0;
 341         data->file_mode = 0600;
 342         data->dir_mode = 0700;
 343         data->info_fd = -1;
 344         data->mounted_vol[0] = 0;
 345
 346         while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
 347                 if (optval < 0)
 348                         return optval;
 349                 switch (optval) {
 350                         case 'u':
 351                                 data->uid = optint;
 352                                 break;
 353                         case 'g':
 354                                 data->gid = optint;
 355                                 break;
 356                         case 'o':
 357                                 data->mounted_uid = optint;
 358                                 break;
 359                         case 'm':
 360                                 data->file_mode = optint;
 361                                 break;
 362                         case 'd':
 363                                 data->dir_mode = optint;
 364                                 break;
 365                         case 't':
 366                                 data->time_out = optint;
 367                                 break;
 368                         case 'r':
 369                                 data->retry_count = optint;
 370                                 break;
 371                         case 'f':
 372                                 data->flags = optint;
 373                                 break;
 374                         case 'w':
 375                                 data->wdog_pid = optint;
 376                                 break;
 377                         case 'n':
 378                                 data->ncp_fd = optint;
 379                                 break;
 380                         case 'i':
 381                                 data->info_fd = optint;
 382                                 break;
 383                         case 'v':
 384                                 if (optint < NCP_MOUNT_VERSION_V4) {
 385                                         return -ECHRNG;
 386                                 }
 387                                 if (optint > NCP_MOUNT_VERSION_V5) {
 388                                         return -ECHRNG;
 389                                 }
 390                                 version = optint;
 391                                 break;
 392
 393                 }
 394         }
 395         return 0;
 396 }
 397
 398 static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
 399 {
 400         struct ncp_mount_data_kernel data;
 401         struct ncp_server *server;
 402         struct file *ncp_filp;
 403         struct inode *root_inode;
 404         struct inode *sock_inode;
 405         struct socket *sock;
 406         int error;
 407         int default_bufsize;
 408 #ifdef CONFIG_NCPFS_PACKET_SIGNING
 409         int options;
 410 #endif
 411         struct ncp_entry_info finfo;
 412
 413         server = kmalloc(sizeof(struct ncp_server), GFP_KERNEL);
 414         if (!server)
 415                 return -ENOMEM;
 416         sb->s_fs_info = server;
 417         memset(server, 0, sizeof(struct ncp_server));
 418
 419         error = -EFAULT;
 420         if (raw_data == NULL)
 421                 goto out;
 422         switch (*(int*)raw_data) {
 423                 case NCP_MOUNT_VERSION:
 424                         {
 425                                 struct ncp_mount_data* md = (struct ncp_mount_data*)raw_data;
 426
 427                                 data.flags = md->flags;
 428                                 data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE;
 429                                 data.mounted_uid = md->mounted_uid;
 430                                 data.wdog_pid = md->wdog_pid;
 431                                 data.ncp_fd = md->ncp_fd;
 432                                 data.time_out = md->time_out;
 433                                 data.retry_count = md->retry_count;
 434                                 data.uid = md->uid;
 435                                 data.gid = md->gid;
 436                                 data.file_mode = md->file_mode;
 437                                 data.dir_mode = md->dir_mode;
 438                                 data.info_fd = -1;
 439                                 memcpy(data.mounted_vol, md->mounted_vol,
 440                                         NCP_VOLNAME_LEN+1);
 441                         }
 442                         break;
 443                 case NCP_MOUNT_VERSION_V4:
 444                         {
 445                                 struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data;
 446
 447                                 data.flags = md->flags;
 448                                 data.int_flags = 0;
 449                                 data.mounted_uid = md->mounted_uid;
 450                                 data.wdog_pid = md->wdog_pid;
 451                                 data.ncp_fd = md->ncp_fd;
 452                                 data.time_out = md->time_out;
 453                                 data.retry_count = md->retry_count;
 454                                 data.uid = md->uid;
 455                                 data.gid = md->gid;
 456                                 data.file_mode = md->file_mode;
 457                                 data.dir_mode = md->dir_mode;
 458                                 data.info_fd = -1;
 459                                 data.mounted_vol[0] = 0;
 460                         }
 461                         break;
 462                 default:
 463                         error = -ECHRNG;
 464                         if (memcmp(raw_data, "vers", 4) == 0) {
 465                                 error = ncp_parse_options(&data, raw_data);
 466                         }
 467                         if (error)
 468                                 goto out;
 469                         break;
 470         }
 471         error = -EBADF;
 472         ncp_filp = fget(data.ncp_fd);
 473         if (!ncp_filp)
 474                 goto out;
 475         error = -ENOTSOCK;
 476         sock_inode = ncp_filp->f_dentry->d_inode;
 477         if (!S_ISSOCK(sock_inode->i_mode))
 478                 goto out_fput;
 479         sock = SOCKET_I(sock_inode);
 480         if (!sock)
 481                 goto out_fput;
 482
 483         if (sock->type == SOCK_STREAM)
 484                 default_bufsize = 0xF000;
 485         else
 486                 default_bufsize = 1024;
 487
 488         sb->s_flags |= MS_NODIRATIME;   /* probably even noatime */
 489         sb->s_maxbytes = 0xFFFFFFFFU;
 490         sb->s_blocksize = 1024; /* Eh...  Is this correct? */
 491         sb->s_blocksize_bits = 10;
 492         sb->s_magic = NCP_SUPER_MAGIC;
 493         sb->s_op = &ncp_sops;
 494
 495         server = NCP_SBP(sb);
 496         memset(server, 0, sizeof(*server));
 497
 498         server->ncp_filp = ncp_filp;
 499         server->ncp_sock = sock;
 500
 501         if (data.info_fd != -1) {
 502                 struct socket *info_sock;
 503
 504                 error = -EBADF;
 505                 server->info_filp = fget(data.info_fd);
 506                 if (!server->info_filp)
 507                         goto out_fput;
 508                 error = -ENOTSOCK;
 509                 sock_inode = server->info_filp->f_dentry->d_inode;
 510                 if (!S_ISSOCK(sock_inode->i_mode))
 511                         goto out_fput2;
 512                 info_sock = SOCKET_I(sock_inode);
 513                 if (!info_sock)
 514                         goto out_fput2;
 515                 error = -EBADFD;
 516                 if (info_sock->type != SOCK_STREAM)
 517                         goto out_fput2;
 518                 server->info_sock = info_sock;
 519         }
 520
 521 /*      server->lock = 0;       */
 522         mutex_init(&server->mutex);
 523         server->packet = NULL;
 524 /*      server->buffer_size = 0;        */
 525 /*      server->conn_status = 0;        */
 526 /*      server->root_dentry = NULL;     */
 527 /*      server->root_setuped = 0;       */
 528 #ifdef CONFIG_NCPFS_PACKET_SIGNING
 529 /*      server->sign_wanted = 0;        */
 530 /*      server->sign_active = 0;        */
 531 #endif
 532         server->auth.auth_type = NCP_AUTH_NONE;
 533 /*      server->auth.object_name_len = 0;       */
 534 /*      server->auth.object_name = NULL;        */
 535 /*      server->auth.object_type = 0;           */
 536 /*      server->priv.len = 0;                   */
 537 /*      server->priv.data = NULL;               */
 538
 539         server->m = data;
 540         /* Althought anything producing this is buggy, it happens
 541            now because of PATH_MAX changes.. */
 542         if (server->m.time_out < 1) {
 543                 server->m.time_out = 10;
 544                 printk(KERN_INFO "You need to recompile your ncpfs utils..\n");
 545         }
 546         server->m.time_out = server->m.time_out * HZ / 100;
 547         server->m.file_mode = (server->m.file_mode & S_IRWXUGO) | S_IFREG;
 548         server->m.dir_mode = (server->m.dir_mode & S_IRWXUGO) | S_IFDIR;
 549
 550 #ifdef CONFIG_NCPFS_NLS
 551         /* load the default NLS charsets */
 552         server->nls_vol = load_nls_default();
 553         server->nls_io = load_nls_default();
 554 #endif /* CONFIG_NCPFS_NLS */
 555
 556         server->dentry_ttl = 0; /* no caching */
 557
 558         INIT_LIST_HEAD(&server->tx.requests);
 559         mutex_init(&server->rcv.creq_mutex);
 560         server->tx.creq         = NULL;
 561         server->rcv.creq        = NULL;
 562         server->data_ready      = sock->sk->sk_data_ready;
 563         server->write_space     = sock->sk->sk_write_space;
 564         server->error_report    = sock->sk->sk_error_report;
 565         sock->sk->sk_user_data  = server;
 566
 567         init_timer(&server->timeout_tm);
 568 #undef NCP_PACKET_SIZE
 569 #define NCP_PACKET_SIZE 131072
 570         error = -ENOMEM;
 571         server->packet_size = NCP_PACKET_SIZE;
 572         server->packet = vmalloc(NCP_PACKET_SIZE);
 573         if (server->packet == NULL)
 574                 goto out_nls;
 575
 576         sock->sk->sk_data_ready   = ncp_tcp_data_ready;
 577         sock->sk->sk_error_report = ncp_tcp_error_report;
 578         if (sock->type == SOCK_STREAM) {
 579                 server->rcv.ptr = (unsigned char*)&server->rcv.buf;
 580                 server->rcv.len = 10;
 581                 server->rcv.state = 0;
 582                 INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc, server);
 583                 INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc, server);
 584                 sock->sk->sk_write_space = ncp_tcp_write_space;
 585         } else {
 586                 INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc, server);
 587                 INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc, server);
 588                 server->timeout_tm.data = (unsigned long)server;
 589                 server->timeout_tm.function = ncpdgram_timeout_call;
 590         }
 591
 592         ncp_lock_server(server);
 593         error = ncp_connect(server);
 594         ncp_unlock_server(server);
 595         if (error < 0)
 596                 goto out_packet;
 597         DPRINTK("ncp_fill_super: NCP_SBP(sb) = %x\n", (int) NCP_SBP(sb));
 598
 599         error = -EMSGSIZE;      /* -EREMOTESIDEINCOMPATIBLE */
 600 #ifdef CONFIG_NCPFS_PACKET_SIGNING
 601         if (ncp_negotiate_size_and_options(server, default_bufsize,
 602                 NCP_DEFAULT_OPTIONS, &(server->buffer_size), &options) == 0)
 603         {
 604                 if (options != NCP_DEFAULT_OPTIONS)
 605                 {
 606                         if (ncp_negotiate_size_and_options(server,
 607                                 default_bufsize,
 608                                 options & 2,
 609                                 &(server->buffer_size), &options) != 0)
 610
 611                         {
 612                                 goto out_disconnect;
 613                         }
 614                 }
 615                 if (options & 2)
 616                         server->sign_wanted = 1;
 617         }
 618         else
 619 #endif  /* CONFIG_NCPFS_PACKET_SIGNING */
 620         if (ncp_negotiate_buffersize(server, default_bufsize,
 621                                      &(server->buffer_size)) != 0)
 622                 goto out_disconnect;
 623         DPRINTK("ncpfs: bufsize = %d\n", server->buffer_size);
 624
 625         memset(&finfo, 0, sizeof(finfo));
 626         finfo.i.attributes      = aDIR;
 627         finfo.i.dataStreamSize  = 0;    /* ignored */
 628         finfo.i.dirEntNum       = 0;
 629         finfo.i.DosDirNum       = 0;
 630 #ifdef CONFIG_NCPFS_SMALLDOS
 631         finfo.i.NSCreator       = NW_NS_DOS;
 632 #endif
 633         finfo.volume            = NCP_NUMBER_OF_VOLUMES;
 634         /* set dates of mountpoint to Jan 1, 1986; 00:00 */
 635         finfo.i.creationTime    = finfo.i.modifyTime
 636                                 = cpu_to_le16(0x0000);
 637         finfo.i.creationDate    = finfo.i.modifyDate
 638                                 = finfo.i.lastAccessDate
 639                                 = cpu_to_le16(0x0C21);
 640         finfo.i.nameLen         = 0;
 641         finfo.i.entryName[0]    = '\0';
 642
 643         finfo.opened            = 0;
 644         finfo.ino               = 2;    /* tradition */
 645
 646         server->name_space[finfo.volume] = NW_NS_DOS;
 647
 648         error = -ENOMEM;
 649         root_inode = ncp_iget(sb, &finfo);
 650         if (!root_inode)
 651                 goto out_disconnect;
 652         DPRINTK("ncp_fill_super: root vol=%d\n", NCP_FINFO(root_inode)->volNumber);
 653         sb->s_root = d_alloc_root(root_inode);
 654         if (!sb->s_root)
 655                 goto out_no_root;
 656         sb->s_root->d_op = &ncp_root_dentry_operations;
 657         return 0;
 658
 659 out_no_root:
 660         iput(root_inode);
 661 out_disconnect:
 662         ncp_lock_server(server);
 663         ncp_disconnect(server);
 664         ncp_unlock_server(server);
 665 out_packet:
 666         ncp_stop_tasks(server);
 667         vfree(server->packet);
 668 out_nls:
 669 #ifdef CONFIG_NCPFS_NLS
 670         unload_nls(server->nls_io);
 671         unload_nls(server->nls_vol);
 672 #endif
 673 out_fput2:
 674         if (server->info_filp)
 675                 fput(server->info_filp);
 676 out_fput:
 677         /* 23/12/1998 Marcin Dalecki <dalecki@cs.net.pl>:
 678          *
 679          * The previously used put_filp(ncp_filp); was bogous, since
 680          * it doesn't proper unlocking.
 681          */
 682         fput(ncp_filp);
 683 out:
 684         sb->s_fs_info = NULL;
 685         kfree(server);
 686         return error;
 687 }
 688
 689 static void ncp_put_super(struct super_block *sb)
 690 {
 691         struct ncp_server *server = NCP_SBP(sb);
 692
 693         ncp_lock_server(server);
 694         ncp_disconnect(server);
 695         ncp_unlock_server(server);
 696
 697         ncp_stop_tasks(server);
 698
 699 #ifdef CONFIG_NCPFS_NLS
 700         /* unload the NLS charsets */
 701         if (server->nls_vol)
 702         {
 703                 unload_nls(server->nls_vol);
 704                 server->nls_vol = NULL;
 705         }
 706         if (server->nls_io)
 707         {
 708                 unload_nls(server->nls_io);
 709                 server->nls_io = NULL;
 710         }
 711 #endif /* CONFIG_NCPFS_NLS */
 712
 713         if (server->info_filp)
 714                 fput(server->info_filp);
 715         fput(server->ncp_filp);
 716         kill_proc(server->m.wdog_pid, SIGTERM, 1);
 717
 718         kfree(server->priv.data);
 719         kfree(server->auth.object_name);
 720         vfree(server->packet);
 721         sb->s_fs_info = NULL;
 722         kfree(server);
 723 }
 724
 725 static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
 726 {
 727         struct dentry* d;
 728         struct inode* i;
 729         struct ncp_inode_info* ni;
 730         struct ncp_server* s;
 731         struct ncp_volume_info vi;
 732         struct super_block *sb = dentry->d_sb;
 733         int err;
 734         __u8 dh;
 735
 736         d = sb->s_root;
 737         if (!d) {
 738                 goto dflt;
 739         }
 740         i = d->d_inode;
 741         if (!i) {
 742                 goto dflt;
 743         }
 744         ni = NCP_FINFO(i);
 745         if (!ni) {
 746                 goto dflt;
 747         }
 748         s = NCP_SBP(sb);
 749         if (!s) {
 750                 goto dflt;
 751         }
 752         if (!s->m.mounted_vol[0]) {
 753                 goto dflt;
 754         }
 755
 756         err = ncp_dirhandle_alloc(s, ni->volNumber, ni->DosDirNum, &dh);
 757         if (err) {
 758                 goto dflt;
 759         }
 760         err = ncp_get_directory_info(s, dh, &vi);
 761         ncp_dirhandle_free(s, dh);
 762         if (err) {
 763                 goto dflt;
 764         }
 765         buf->f_type = NCP_SUPER_MAGIC;
 766         buf->f_bsize = vi.sectors_per_block * 512;
 767         buf->f_blocks = vi.total_blocks;
 768         buf->f_bfree = vi.free_blocks;
 769         buf->f_bavail = vi.free_blocks;
 770         buf->f_files = vi.total_dir_entries;
 771         buf->f_ffree = vi.available_dir_entries;
 772         buf->f_namelen = 12;
 773         return 0;
 774
 775         /* We cannot say how much disk space is left on a mounted
 776            NetWare Server, because free space is distributed over
 777            volumes, and the current user might have disk quotas. So
 778            free space is not that simple to determine. Our decision
 779            here is to err conservatively. */
 780
 781 dflt:;
 782         buf->f_type = NCP_SUPER_MAGIC;
 783         buf->f_bsize = NCP_BLOCK_SIZE;
 784         buf->f_blocks = 0;
 785         buf->f_bfree = 0;
 786         buf->f_bavail = 0;
 787         buf->f_namelen = 12;
 788         return 0;
 789 }
 790
 791 int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
 792 {
 793         struct inode *inode = dentry->d_inode;
 794         int result = 0;
 795         __le32 info_mask;
 796         struct nw_modify_dos_info info;
 797         struct ncp_server *server;
 798
 799         result = -EIO;
 800
 801         lock_kernel();
 802
 803         server = NCP_SERVER(inode);
 804         if ((!server) || !ncp_conn_valid(server))
 805                 goto out;
 806
 807         /* ageing the dentry to force validation */
 808         ncp_age_dentry(server, dentry);
 809
 810         result = inode_change_ok(inode, attr);
 811         if (result < 0)
 812                 goto out;
 813
 814         result = -EPERM;
 815         if (((attr->ia_valid & ATTR_UID) &&
 816              (attr->ia_uid != server->m.uid)))
 817                 goto out;
 818
 819         if (((attr->ia_valid & ATTR_GID) &&
 820              (attr->ia_gid != server->m.gid)))
 821                 goto out;
 822
 823         if (((attr->ia_valid & ATTR_MODE) &&
 824              (attr->ia_mode &
 825               ~(S_IFREG | S_IFDIR | S_IRWXUGO))))
 826                 goto out;
 827
 828         info_mask = 0;
 829         memset(&info, 0, sizeof(info));
 830
 831 #if 1
 832         if ((attr->ia_valid & ATTR_MODE) != 0)
 833         {
 834                 umode_t newmode = attr->ia_mode;
 835
 836                 info_mask |= DM_ATTRIBUTES;
 837
 838                 if (S_ISDIR(inode->i_mode)) {
 839                         newmode &= server->m.dir_mode;
 840                 } else {
 841 #ifdef CONFIG_NCPFS_EXTRAS
 842                         if (server->m.flags & NCP_MOUNT_EXTRAS) {
 843                                 /* any non-default execute bit set */
 844                                 if (newmode & ~server->m.file_mode & S_IXUGO)
 845                                         info.attributes |= aSHARED | aSYSTEM;
 846                                 /* read for group/world and not in default file_mode */
 847                                 else if (newmode & ~server->m.file_mode & S_IRUGO)
 848                                         info.attributes |= aSHARED;
 849                         } else
 850 #endif
 851                                 newmode &= server->m.file_mode;
 852                 }
 853                 if (newmode & S_IWUGO)
 854                         info.attributes &= ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
 855                 else
 856                         info.attributes |=  (aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
 857
 858 #ifdef CONFIG_NCPFS_NFS_NS
 859                 if (ncp_is_nfs_extras(server, NCP_FINFO(inode)->volNumber)) {
 860                         result = ncp_modify_nfs_info(server,
 861                                                      NCP_FINFO(inode)->volNumber,
 862                                                      NCP_FINFO(inode)->dirEntNum,
 863                                                      attr->ia_mode, 0);
 864                         if (result != 0)
 865                                 goto out;
 866                         info.attributes &= ~(aSHARED | aSYSTEM);
 867                         {
 868                                 /* mark partial success */
 869                                 struct iattr tmpattr;
 870
 871                                 tmpattr.ia_valid = ATTR_MODE;
 872                                 tmpattr.ia_mode = attr->ia_mode;
 873
 874                                 result = inode_setattr(inode, &tmpattr);
 875                                 if (result)
 876                                         goto out;
 877                         }
 878                 }
 879 #endif
 880         }
 881 #endif
 882
 883         /* Do SIZE before attributes, otherwise mtime together with size does not work...
 884          */
 885         if ((attr->ia_valid & ATTR_SIZE) != 0) {
 886                 int written;
 887
 888                 DPRINTK("ncpfs: trying to change size to %ld\n",
 889                         attr->ia_size);
 890
 891                 if ((result = ncp_make_open(inode, O_WRONLY)) < 0) {
 892                         result = -EACCES;
 893                         goto out;
 894                 }
 895                 ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle,
 896                           attr->ia_size, 0, "", &written);
 897
 898                 /* According to ndir, the changes only take effect after
 899                    closing the file */
 900                 ncp_inode_close(inode);
 901                 result = ncp_make_closed(inode);
 902                 if (result)
 903                         goto out;
 904                 {
 905                         struct iattr tmpattr;
 906
 907                         tmpattr.ia_valid = ATTR_SIZE;
 908                         tmpattr.ia_size = attr->ia_size;
 909
 910                         result = inode_setattr(inode, &tmpattr);
 911                         if (result)
 912                                 goto out;
 913                 }
 914         }
 915         if ((attr->ia_valid & ATTR_CTIME) != 0) {
 916                 info_mask |= (DM_CREATE_TIME | DM_CREATE_DATE);
 917                 ncp_date_unix2dos(attr->ia_ctime.tv_sec,
 918                              &info.creationTime, &info.creationDate);
 919         }
 920         if ((attr->ia_valid & ATTR_MTIME) != 0) {
 921                 info_mask |= (DM_MODIFY_TIME | DM_MODIFY_DATE);
 922                 ncp_date_unix2dos(attr->ia_mtime.tv_sec,
 923                                   &info.modifyTime, &info.modifyDate);
 924         }
 925         if ((attr->ia_valid & ATTR_ATIME) != 0) {
 926                 __le16 dummy;
 927                 info_mask |= (DM_LAST_ACCESS_DATE);
 928                 ncp_date_unix2dos(attr->ia_atime.tv_sec,
 929                                   &dummy, &info.lastAccessDate);
 930         }
 931         if (info_mask != 0) {
 932                 result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),
 933                                       inode, info_mask, &info);
 934                 if (result != 0) {
 935                         result = -EACCES;
 936
 937                         if (info_mask == (DM_CREATE_TIME | DM_CREATE_DATE)) {
 938                                 /* NetWare seems not to allow this. I
 939                                    do not know why. So, just tell the
 940                                    user everything went fine. This is
 941                                    a terrible hack, but I do not know
 942                                    how to do this correctly. */
 943                                 result = 0;
 944                         } else
 945                                 goto out;
 946                 }
 947 #ifdef CONFIG_NCPFS_STRONG
 948                 if ((!result) && (info_mask & DM_ATTRIBUTES))
 949                         NCP_FINFO(inode)->nwattr = info.attributes;
 950 #endif
 951         }
 952         if (!result)
 953                 result = inode_setattr(inode, attr);
 954 out:
 955         unlock_kernel();
 956         return result;
 957 }
 958
 959 static int ncp_get_sb(struct file_system_type *fs_type,
 960         int flags, const char *dev_name, void *data, struct vfsmount *mnt)
 961 {
 962         return get_sb_nodev(fs_type, flags, data, ncp_fill_super, mnt);
 963 }
 964
 965 static struct file_system_type ncp_fs_type = {
 966         .owner          = THIS_MODULE,
 967         .name           = "ncpfs",
 968         .get_sb         = ncp_get_sb,
 969         .kill_sb        = kill_anon_super,
 970 };
 971
 972 static int __init init_ncp_fs(void)
 973 {
 974         int err;
 975         DPRINTK("ncpfs: init_module called\n");
 976
 977         err = init_inodecache();
 978         if (err)
 979                 goto out1;
 980         err = register_filesystem(&ncp_fs_type);
 981         if (err)
 982                 goto out;
 983         return 0;
 984 out:
 985         destroy_inodecache();
 986 out1:
 987         return err;
 988 }
 989
 990 static void __exit exit_ncp_fs(void)
 991 {
 992         DPRINTK("ncpfs: cleanup_module called\n");
 993         unregister_filesystem(&ncp_fs_type);
 994         destroy_inodecache();
 995 }
 996
 997 module_init(init_ncp_fs)
 998 module_exit(exit_ncp_fs)
 999 MODULE_LICENSE("GPL");