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/config.h>
  13 #include <linux/module.h>
  14
  15 #include <asm/system.h>
  16 #include <asm/uaccess.h>
  17 #include <asm/byteorder.h>
  18
  19 #include <linux/time.h>
  20 #include <linux/kernel.h>
  21 #include <linux/mm.h>
  22 #include <linux/string.h>
  23 #include <linux/stat.h>
  24 #include <linux/errno.h>
  25 #include <linux/file.h>
  26 #include <linux/fcntl.h>
  27 #include <linux/slab.h>
  28 #include <linux/vmalloc.h>
  29 #include <linux/init.h>
  30 #include <linux/smp_lock.h>
  31 #include <linux/vfs.h>
  32
  33 #include <linux/ncp_fs.h>
  34
  35 #include <net/sock.h>
  36
  37 #include "ncplib_kernel.h"
  38 #include "getopt.h"
  39
  40 static void ncp_delete_inode(struct inode *);
  41 static void ncp_put_super(struct super_block *);
  42 static int  ncp_statfs(struct dentry *, struct kstatfs *);
  43
  44 static kmem_cache_t * ncp_inode_cachep;
  45
  46 static struct inode *ncp_alloc_inode(struct super_block *sb)
  47 {
  48         struct ncp_inode_info *ei;
  49         ei = (struct ncp_inode_info *)kmem_cache_alloc(ncp_inode_cachep, SLAB_KERNEL);
  50         if (!ei)
  51                 return NULL;
  52         return &ei->vfs_inode;
  53 }
  54
  55 static void ncp_destroy_inode(struct inode *inode)
  56 {
  57         kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode));
  58 }
  59
  60 static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
  61 {
  62         struct ncp_inode_info *ei = (struct ncp_inode_info *) foo;
  63
  64         if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
  65             SLAB_CTOR_CONSTRUCTOR) {
  66                 mutex_init(&ei->open_mutex);
  67                 inode_init_once(&ei->vfs_inode);
  68         }
  69 }
  70
  71 static int init_inodecache(void)
  72 {
  73         ncp_inode_cachep = kmem_cache_create("ncp_inode_cache",
  74                                              sizeof(struct ncp_inode_info),
  75                                              0, (SLAB_RECLAIM_ACCOUNT|
  76                                                 SLAB_MEM_SPREAD),
  77                                              init_once, NULL);
  78         if (ncp_inode_cachep == NULL)
  79                 return -ENOMEM;
  80         return 0;
  81 }
  82
  83 static void destroy_inodecache(void)
  84 {
  85         if (kmem_cache_destroy(ncp_inode_cachep))
  86                 printk(KERN_INFO "ncp_inode_cache: not all structures were freed\n");
  87 }
  88
  89 static int ncp_remount(struct super_block *sb, int *flags, char* data)
  90 {
  91         *flags |= MS_NODIRATIME;
  92         return 0;
  93 }
  94
  95 static struct super_operations ncp_sops =
  96 {
  97         .alloc_inode    = ncp_alloc_inode,
  98         .destroy_inode  = ncp_destroy_inode,
  99         .drop_inode     = generic_delete_inode,
 100         .delete_inode   = ncp_delete_inode,
 101         .put_super      = ncp_put_super,
 102         .statfs         = ncp_statfs,
 103         .remount_fs     = ncp_remount,
 104 };
 105
 106 extern struct dentry_operations ncp_root_dentry_operations;
 107 #if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
 108 extern const struct address_space_operations ncp_symlink_aops;
 109 extern int ncp_symlink(struct inode*, struct dentry*, const char*);
 110 #endif
 111
 112 /*
 113  * Fill in the ncpfs-specific information in the inode.
 114  */
 115 static void ncp_update_dirent(struct inode *inode, struct ncp_entry_info *nwinfo)
 116 {
 117         NCP_FINFO(inode)->DosDirNum = nwinfo->i.DosDirNum;
 118         NCP_FINFO(inode)->dirEntNum = nwinfo->i.dirEntNum;
 119         NCP_FINFO(inode)->volNumber = nwinfo->volume;
 120 }
 121
 122 void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo)
 123 {
 124         ncp_update_dirent(inode, nwinfo);
 125         NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
 126         NCP_FINFO(inode)->access = nwinfo->access;
 127         memcpy(NCP_FINFO(inode)->file_handle, nwinfo->file_handle,
 128                         sizeof(nwinfo->file_handle));
 129         DPRINTK("ncp_update_inode: updated %s, volnum=%d, dirent=%u\n",
 130                 nwinfo->i.entryName, NCP_FINFO(inode)->volNumber,
 131                 NCP_FINFO(inode)->dirEntNum);
 132 }
 133
 134 static void ncp_update_dates(struct inode *inode, struct nw_info_struct *nwi)
 135 {
 136         /* NFS namespace mode overrides others if it's set. */
 137         DPRINTK(KERN_DEBUG "ncp_update_dates_and_mode: (%s) nfs.mode=0%o\n",
 138                 nwi->entryName, nwi->nfs.mode);
 139         if (nwi->nfs.mode) {
 140                 /* XXX Security? */
 141                 inode->i_mode = nwi->nfs.mode;
 142         }
 143
 144         inode->i_blocks = (inode->i_size + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT;
 145
 146         inode->i_mtime.tv_sec = ncp_date_dos2unix(nwi->modifyTime, nwi->modifyDate);
 147         inode->i_ctime.tv_sec = ncp_date_dos2unix(nwi->creationTime, nwi->creationDate);
 148         inode->i_atime.tv_sec = ncp_date_dos2unix(0, nwi->lastAccessDate);
 149         inode->i_atime.tv_nsec = 0;
 150         inode->i_mtime.tv_nsec = 0;
 151         inode->i_ctime.tv_nsec = 0;
 152 }
 153
 154 static void ncp_update_attrs(struct inode *inode, struct ncp_entry_info *nwinfo)
 155 {
 156         struct nw_info_struct *nwi = &nwinfo->i;
 157         struct ncp_server *server = NCP_SERVER(inode);
 158
 159         if (nwi->attributes & aDIR) {
 160                 inode->i_mode = server->m.dir_mode;
 161                 /* for directories dataStreamSize seems to be some
 162                    Object ID ??? */
 163                 inode->i_size = NCP_BLOCK_SIZE;
 164         } else {
 165                 inode->i_mode = server->m.file_mode;
 166                 inode->i_size = le32_to_cpu(nwi->dataStreamSize);
 167 #ifdef CONFIG_NCPFS_EXTRAS
 168                 if ((server->m.flags & (NCP_MOUNT_EXTRAS|NCP_MOUNT_SYMLINKS))
 169                  && (nwi->attributes & aSHARED)) {
 170                         switch (nwi->attributes & (aHIDDEN|aSYSTEM)) {
 171                                 case aHIDDEN:
 172                                         if (server->m.flags & NCP_MOUNT_SYMLINKS) {
 173                                                 if (/* (inode->i_size >= NCP_MIN_SYMLINK_SIZE)
 174                                                  && */ (inode->i_size <= NCP_MAX_SYMLINK_SIZE)) {
 175                                                         inode->i_mode = (inode->i_mode & ~S_IFMT) | S_IFLNK;
 176                                                         NCP_FINFO(inode)->flags |= NCPI_KLUDGE_SYMLINK;
 177                                                         break;
 178                                                 }
 179                                         }
 180                                         /* FALLTHROUGH */
 181                                 case 0:
 182                                         if (server->m.flags & NCP_MOUNT_EXTRAS)
 183                                                 inode->i_mode |= S_IRUGO;
 184                                         break;
 185                                 case aSYSTEM:
 186                                         if (server->m.flags & NCP_MOUNT_EXTRAS)
 187                                                 inode->i_mode |= (inode->i_mode >> 2) & S_IXUGO;
 188                                         break;
 189                                 /* case aSYSTEM|aHIDDEN: */
 190                                 default:
 191                                         /* reserved combination */
 192                                         break;
 193                         }
 194                 }
 195 #endif
 196         }
 197         if (nwi->attributes & aRONLY) inode->i_mode &= ~S_IWUGO;
 198 }
 199
 200 void ncp_update_inode2(struct inode* inode, struct ncp_entry_info *nwinfo)
 201 {
 202         NCP_FINFO(inode)->flags = 0;
 203         if (!atomic_read(&NCP_FINFO(inode)->opened)) {
 204                 NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
 205                 ncp_update_attrs(inode, nwinfo);
 206         }
 207
 208         ncp_update_dates(inode, &nwinfo->i);
 209         ncp_update_dirent(inode, nwinfo);
 210 }
 211
 212 /*
 213  * Fill in the inode based on the ncp_entry_info structure.
 214  */
 215 static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo)
 216 {
 217         struct ncp_server *server = NCP_SERVER(inode);
 218
 219         NCP_FINFO(inode)->flags = 0;
 220
 221         ncp_update_attrs(inode, nwinfo);
 222
 223         DDPRINTK("ncp_read_inode: inode->i_mode = %u\n", inode->i_mode);
 224
 225         inode->i_nlink = 1;
 226         inode->i_uid = server->m.uid;
 227         inode->i_gid = server->m.gid;
 228         inode->i_blksize = NCP_BLOCK_SIZE;
 229
 230         ncp_update_dates(inode, &nwinfo->i);
 231         ncp_update_inode(inode, nwinfo);
 232 }
 233
 234 #if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
 235 static struct inode_operations ncp_symlink_inode_operations = {
 236         .readlink       = generic_readlink,
 237         .follow_link    = page_follow_link_light,
 238         .put_link       = page_put_link,
 239         .setattr        = ncp_notify_change,
 240 };
 241 #endif
 242
 243 /*
 244  * Get a new inode.
 245  */
 246 struct inode *
 247 ncp_iget(struct super_block *sb, struct ncp_entry_info *info)
 248 {
 249         struct inode *inode;
 250
 251         if (info == NULL) {
 252                 printk(KERN_ERR "ncp_iget: info is NULL\n");
 253                 return NULL;
 254         }
 255
 256         inode = new_inode(sb);
 257         if (inode) {
 258                 atomic_set(&NCP_FINFO(inode)->opened, info->opened);
 259
 260                 inode->i_ino = info->ino;
 261                 ncp_set_attr(inode, info);
 262                 if (S_ISREG(inode->i_mode)) {
 263                         inode->i_op = &ncp_file_inode_operations;
 264                         inode->i_fop = &ncp_file_operations;
 265                 } else if (S_ISDIR(inode->i_mode)) {
 266                         inode->i_op = &ncp_dir_inode_operations;
 267                         inode->i_fop = &ncp_dir_operations;
 268 #ifdef CONFIG_NCPFS_NFS_NS
 269                 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
 270                         init_special_inode(inode, inode->i_mode,
 271                                 new_decode_dev(info->i.nfs.rdev));
 272 #endif
 273 #if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
 274                 } else if (S_ISLNK(inode->i_mode)) {
 275                         inode->i_op = &ncp_symlink_inode_operations;
 276                         inode->i_data.a_ops = &ncp_symlink_aops;
 277 #endif
 278                 } else {
 279                         make_bad_inode(inode);
 280                 }
 281                 insert_inode_hash(inode);
 282         } else
 283                 printk(KERN_ERR "ncp_iget: iget failed!\n");
 284         return inode;
 285 }
 286
 287 static void
 288 ncp_delete_inode(struct inode *inode)
 289 {
 290         truncate_inode_pages(&inode->i_data, 0);
 291
 292         if (S_ISDIR(inode->i_mode)) {
 293                 DDPRINTK("ncp_delete_inode: put directory %ld\n", inode->i_ino);
 294         }
 295
 296         if (ncp_make_closed(inode) != 0) {
 297                 /* We can't do anything but complain. */
 298                 printk(KERN_ERR "ncp_delete_inode: could not close\n");
 299         }
 300         clear_inode(inode);
 301 }
 302
 303 static void ncp_stop_tasks(struct ncp_server *server) {
 304         struct sock* sk = server->ncp_sock->sk;
 305
 306         sk->sk_error_report = server->error_report;
 307         sk->sk_data_ready   = server->data_ready;
 308         sk->sk_write_space  = server->write_space;
 309         del_timer_sync(&server->timeout_tm);
 310         flush_scheduled_work();
 311 }
 312
 313 static const struct ncp_option ncp_opts[] = {
 314         { "uid",        OPT_INT,        'u' },
 315         { "gid",        OPT_INT,        'g' },
 316         { "owner",      OPT_INT,        'o' },
 317         { "mode",       OPT_INT,        'm' },
 318         { "dirmode",    OPT_INT,        'd' },
 319         { "timeout",    OPT_INT,        't' },
 320         { "retry",      OPT_INT,        'r' },
 321         { "flags",      OPT_INT,        'f' },
 322         { "wdogpid",    OPT_INT,        'w' },
 323         { "ncpfd",      OPT_INT,        'n' },
 324         { "infofd",     OPT_INT,        'i' },  /* v5 */
 325         { "version",    OPT_INT,        'v' },
 326         { NULL,         0,              0 } };
 327
 328 static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) {
 329         int optval;
 330         char *optarg;
 331         unsigned long optint;
 332         int version = 0;
 333
 334         data->flags = 0;
 335         data->int_flags = 0;
 336         data->mounted_uid = 0;
 337         data->wdog_pid = -1;
 338         data->ncp_fd = ~0;
 339         data->time_out = 10;
 340         data->retry_count = 20;
 341         data->uid = 0;
 342         data->gid = 0;
 343         data->file_mode = 0600;
 344         data->dir_mode = 0700;
 345         data->info_fd = -1;
 346         data->mounted_vol[0] = 0;
 347
 348         while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
 349                 if (optval < 0)
 350                         return optval;
 351                 switch (optval) {
 352                         case 'u':
 353                                 data->uid = optint;
 354                                 break;
 355                         case 'g':
 356                                 data->gid = optint;
 357                                 break;
 358                         case 'o':
 359                                 data->mounted_uid = optint;
 360                                 break;
 361                         case 'm':
 362                                 data->file_mode = optint;
 363                                 break;
 364                         case 'd':
 365                                 data->dir_mode = optint;
 366                                 break;
 367                         case 't':
 368                                 data->time_out = optint;
 369                                 break;
 370                         case 'r':
 371                                 data->retry_count = optint;
 372                                 break;
 373                         case 'f':
 374                                 data->flags = optint;
 375                                 break;
 376                         case 'w':
 377                                 data->wdog_pid = optint;
 378                                 break;
 379                         case 'n':
 380                                 data->ncp_fd = optint;
 381                                 break;
 382                         case 'i':
 383                                 data->info_fd = optint;
 384                                 break;
 385                         case 'v':
 386                                 if (optint < NCP_MOUNT_VERSION_V4) {
 387                                         return -ECHRNG;
 388                                 }
 389                                 if (optint > NCP_MOUNT_VERSION_V5) {
 390                                         return -ECHRNG;
 391                                 }
 392                                 version = optint;
 393                                 break;
 394
 395                 }
 396         }
 397         return 0;
 398 }
 399
 400 static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
 401 {
 402         struct ncp_mount_data_kernel data;
 403         struct ncp_server *server;
 404         struct file *ncp_filp;
 405         struct inode *root_inode;
 406         struct inode *sock_inode;
 407         struct socket *sock;
 408         int error;
 409         int default_bufsize;
 410 #ifdef CONFIG_NCPFS_PACKET_SIGNING
 411         int options;
 412 #endif
 413         struct ncp_entry_info finfo;
 414
 415         server = kmalloc(sizeof(struct ncp_server), GFP_KERNEL);
 416         if (!server)
 417                 return -ENOMEM;
 418         sb->s_fs_info = server;
 419         memset(server, 0, sizeof(struct ncp_server));
 420
 421         error = -EFAULT;
 422         if (raw_data == NULL)
 423                 goto out;
 424         switch (*(int*)raw_data) {
 425                 case NCP_MOUNT_VERSION:
 426                         {
 427                                 struct ncp_mount_data* md = (struct ncp_mount_data*)raw_data;
 428
 429                                 data.flags = md->flags;
 430                                 data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE;
 431                                 data.mounted_uid = md->mounted_uid;
 432                                 data.wdog_pid = md->wdog_pid;
 433                                 data.ncp_fd = md->ncp_fd;
 434                                 data.time_out = md->time_out;
 435                                 data.retry_count = md->retry_count;
 436                                 data.uid = md->uid;
 437                                 data.gid = md->gid;
 438                                 data.file_mode = md->file_mode;
 439                                 data.dir_mode = md->dir_mode;
 440                                 data.info_fd = -1;
 441                                 memcpy(data.mounted_vol, md->mounted_vol,
 442                                         NCP_VOLNAME_LEN+1);
 443                         }
 444                         break;
 445                 case NCP_MOUNT_VERSION_V4:
 446                         {
 447                                 struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data;
 448
 449                                 data.flags = md->flags;
 450                                 data.int_flags = 0;
 451                                 data.mounted_uid = md->mounted_uid;
 452                                 data.wdog_pid = md->wdog_pid;
 453                                 data.ncp_fd = md->ncp_fd;
 454                                 data.time_out = md->time_out;
 455                                 data.retry_count = md->retry_count;
 456                                 data.uid = md->uid;
 457                                 data.gid = md->gid;
 458                                 data.file_mode = md->file_mode;
 459                                 data.dir_mode = md->dir_mode;
 460                                 data.info_fd = -1;
 461                                 data.mounted_vol[0] = 0;
 462                         }
 463                         break;
 464                 default:
 465                         error = -ECHRNG;
 466                         if (memcmp(raw_data, "vers", 4) == 0) {
 467                                 error = ncp_parse_options(&data, raw_data);
 468                         }
 469                         if (error)
 470                                 goto out;
 471                         break;
 472         }
 473         error = -EBADF;
 474         ncp_filp = fget(data.ncp_fd);
 475         if (!ncp_filp)
 476                 goto out;
 477         error = -ENOTSOCK;
 478         sock_inode = ncp_filp->f_dentry->d_inode;
 479         if (!S_ISSOCK(sock_inode->i_mode))
 480                 goto out_fput;
 481         sock = SOCKET_I(sock_inode);
 482         if (!sock)
 483                 goto out_fput;
 484
 485         if (sock->type == SOCK_STREAM)
 486                 default_bufsize = 0xF000;
 487         else
 488                 default_bufsize = 1024;
 489
 490         sb->s_flags |= MS_NODIRATIME;   /* probably even noatime */
 491         sb->s_maxbytes = 0xFFFFFFFFU;
 492         sb->s_blocksize = 1024; /* Eh...  Is this correct? */
 493         sb->s_blocksize_bits = 10;
 494         sb->s_magic = NCP_SUPER_MAGIC;
 495         sb->s_op = &ncp_sops;
 496
 497         server = NCP_SBP(sb);
 498         memset(server, 0, sizeof(*server));
 499
 500         server->ncp_filp = ncp_filp;
 501         server->ncp_sock = sock;
 502
 503         if (data.info_fd != -1) {
 504                 struct socket *info_sock;
 505
 506                 error = -EBADF;
 507                 server->info_filp = fget(data.info_fd);
 508                 if (!server->info_filp)
 509                         goto out_fput;
 510                 error = -ENOTSOCK;
 511                 sock_inode = server->info_filp->f_dentry->d_inode;
 512                 if (!S_ISSOCK(sock_inode->i_mode))
 513                         goto out_fput2;
 514                 info_sock = SOCKET_I(sock_inode);
 515                 if (!info_sock)
 516                         goto out_fput2;
 517                 error = -EBADFD;
 518                 if (info_sock->type != SOCK_STREAM)
 519                         goto out_fput2;
 520                 server->info_sock = info_sock;
 521         }
 522
 523 /*      server->lock = 0;       */
 524         mutex_init(&server->mutex);
 525         server->packet = NULL;
 526 /*      server->buffer_size = 0;        */
 527 /*      server->conn_status = 0;        */
 528 /*      server->root_dentry = NULL;     */
 529 /*      server->root_setuped = 0;       */
 530 #ifdef CONFIG_NCPFS_PACKET_SIGNING
 531 /*      server->sign_wanted = 0;        */
 532 /*      server->sign_active = 0;        */
 533 #endif
 534         server->auth.auth_type = NCP_AUTH_NONE;
 535 /*      server->auth.object_name_len = 0;       */
 536 /*      server->auth.object_name = NULL;        */
 537 /*      server->auth.object_type = 0;           */
 538 /*      server->priv.len = 0;                   */
 539 /*      server->priv.data = NULL;               */
 540
 541         server->m = data;
 542         /* Althought anything producing this is buggy, it happens
 543            now because of PATH_MAX changes.. */
 544         if (server->m.time_out < 1) {
 545                 server->m.time_out = 10;
 546                 printk(KERN_INFO "You need to recompile your ncpfs utils..\n");
 547         }
 548         server->m.time_out = server->m.time_out * HZ / 100;
 549         server->m.file_mode = (server->m.file_mode & S_IRWXUGO) | S_IFREG;
 550         server->m.dir_mode = (server->m.dir_mode & S_IRWXUGO) | S_IFDIR;
 551
 552 #ifdef CONFIG_NCPFS_NLS
 553         /* load the default NLS charsets */
 554         server->nls_vol = load_nls_default();
 555         server->nls_io = load_nls_default();
 556 #endif /* CONFIG_NCPFS_NLS */
 557
 558         server->dentry_ttl = 0; /* no caching */
 559
 560         INIT_LIST_HEAD(&server->tx.requests);
 561         mutex_init(&server->rcv.creq_mutex);
 562         server->tx.creq         = NULL;
 563         server->rcv.creq        = NULL;
 564         server->data_ready      = sock->sk->sk_data_ready;
 565         server->write_space     = sock->sk->sk_write_space;
 566         server->error_report    = sock->sk->sk_error_report;
 567         sock->sk->sk_user_data  = server;
 568
 569         init_timer(&server->timeout_tm);
 570 #undef NCP_PACKET_SIZE
 571 #define NCP_PACKET_SIZE 131072
 572         error = -ENOMEM;
 573         server->packet_size = NCP_PACKET_SIZE;
 574         server->packet = vmalloc(NCP_PACKET_SIZE);
 575         if (server->packet == NULL)
 576                 goto out_nls;
 577
 578         sock->sk->sk_data_ready   = ncp_tcp_data_ready;
 579         sock->sk->sk_error_report = ncp_tcp_error_report;
 580         if (sock->type == SOCK_STREAM) {
 581                 server->rcv.ptr = (unsigned char*)&server->rcv.buf;
 582                 server->rcv.len = 10;
 583                 server->rcv.state = 0;
 584                 INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc, server);
 585                 INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc, server);
 586                 sock->sk->sk_write_space = ncp_tcp_write_space;
 587         } else {
 588                 INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc, server);
 589                 INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc, server);
 590                 server->timeout_tm.data = (unsigned long)server;
 591                 server->timeout_tm.function = ncpdgram_timeout_call;
 592         }
 593
 594         ncp_lock_server(server);
 595         error = ncp_connect(server);
 596         ncp_unlock_server(server);
 597         if (error < 0)
 598                 goto out_packet;
 599         DPRINTK("ncp_fill_super: NCP_SBP(sb) = %x\n", (int) NCP_SBP(sb));
 600
 601         error = -EMSGSIZE;      /* -EREMOTESIDEINCOMPATIBLE */
 602 #ifdef CONFIG_NCPFS_PACKET_SIGNING
 603         if (ncp_negotiate_size_and_options(server, default_bufsize,
 604                 NCP_DEFAULT_OPTIONS, &(server->buffer_size), &options) == 0)
 605         {
 606                 if (options != NCP_DEFAULT_OPTIONS)
 607                 {
 608                         if (ncp_negotiate_size_and_options(server,
 609                                 default_bufsize,
 610                                 options & 2,
 611                                 &(server->buffer_size), &options) != 0)
 612
 613                         {
 614                                 goto out_disconnect;
 615                         }
 616                 }
 617                 if (options & 2)
 618                         server->sign_wanted = 1;
 619         }
 620         else
 621 #endif  /* CONFIG_NCPFS_PACKET_SIGNING */
 622         if (ncp_negotiate_buffersize(server, default_bufsize,
 623                                      &(server->buffer_size)) != 0)
 624                 goto out_disconnect;
 625         DPRINTK("ncpfs: bufsize = %d\n", server->buffer_size);
 626
 627         memset(&finfo, 0, sizeof(finfo));
 628         finfo.i.attributes      = aDIR;
 629         finfo.i.dataStreamSize  = 0;    /* ignored */
 630         finfo.i.dirEntNum       = 0;
 631         finfo.i.DosDirNum       = 0;
 632 #ifdef CONFIG_NCPFS_SMALLDOS
 633         finfo.i.NSCreator       = NW_NS_DOS;
 634 #endif
 635         finfo.volume            = NCP_NUMBER_OF_VOLUMES;
 636         /* set dates of mountpoint to Jan 1, 1986; 00:00 */
 637         finfo.i.creationTime    = finfo.i.modifyTime
 638                                 = cpu_to_le16(0x0000);
 639         finfo.i.creationDate    = finfo.i.modifyDate
 640                                 = finfo.i.lastAccessDate
 641                                 = cpu_to_le16(0x0C21);
 642         finfo.i.nameLen         = 0;
 643         finfo.i.entryName[0]    = '\0';
 644
 645         finfo.opened            = 0;
 646         finfo.ino               = 2;    /* tradition */
 647
 648         server->name_space[finfo.volume] = NW_NS_DOS;
 649
 650         error = -ENOMEM;
 651         root_inode = ncp_iget(sb, &finfo);
 652         if (!root_inode)
 653                 goto out_disconnect;
 654         DPRINTK("ncp_fill_super: root vol=%d\n", NCP_FINFO(root_inode)->volNumber);
 655         sb->s_root = d_alloc_root(root_inode);
 656         if (!sb->s_root)
 657                 goto out_no_root;
 658         sb->s_root->d_op = &ncp_root_dentry_operations;
 659         return 0;
 660
 661 out_no_root:
 662         iput(root_inode);
 663 out_disconnect:
 664         ncp_lock_server(server);
 665         ncp_disconnect(server);
 666         ncp_unlock_server(server);
 667 out_packet:
 668         ncp_stop_tasks(server);
 669         vfree(server->packet);
 670 out_nls:
 671 #ifdef CONFIG_NCPFS_NLS
 672         unload_nls(server->nls_io);
 673         unload_nls(server->nls_vol);
 674 #endif
 675 out_fput2:
 676         if (server->info_filp)
 677                 fput(server->info_filp);
 678 out_fput:
 679         /* 23/12/1998 Marcin Dalecki <dalecki@cs.net.pl>:
 680          *
 681          * The previously used put_filp(ncp_filp); was bogous, since
 682          * it doesn't proper unlocking.
 683          */
 684         fput(ncp_filp);
 685 out:
 686         sb->s_fs_info = NULL;
 687         kfree(server);
 688         return error;
 689 }
 690
 691 static void ncp_put_super(struct super_block *sb)
 692 {
 693         struct ncp_server *server = NCP_SBP(sb);
 694
 695         ncp_lock_server(server);
 696         ncp_disconnect(server);
 697         ncp_unlock_server(server);
 698
 699         ncp_stop_tasks(server);
 700
 701 #ifdef CONFIG_NCPFS_NLS
 702         /* unload the NLS charsets */
 703         if (server->nls_vol)
 704         {
 705                 unload_nls(server->nls_vol);
 706                 server->nls_vol = NULL;
 707         }
 708         if (server->nls_io)
 709         {
 710                 unload_nls(server->nls_io);
 711                 server->nls_io = NULL;
 712         }
 713 #endif /* CONFIG_NCPFS_NLS */
 714
 715         if (server->info_filp)
 716                 fput(server->info_filp);
 717         fput(server->ncp_filp);
 718         kill_proc(server->m.wdog_pid, SIGTERM, 1);
 719
 720         kfree(server->priv.data);
 721         kfree(server->auth.object_name);
 722         vfree(server->packet);
 723         sb->s_fs_info = NULL;
 724         kfree(server);
 725 }
 726
 727 static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
 728 {
 729         struct dentry* d;
 730         struct inode* i;
 731         struct ncp_inode_info* ni;
 732         struct ncp_server* s;
 733         struct ncp_volume_info vi;
 734         struct super_block *sb = dentry->d_sb;
 735         int err;
 736         __u8 dh;
 737
 738         d = sb->s_root;
 739         if (!d) {
 740                 goto dflt;
 741         }
 742         i = d->d_inode;
 743         if (!i) {
 744                 goto dflt;
 745         }
 746         ni = NCP_FINFO(i);
 747         if (!ni) {
 748                 goto dflt;
 749         }
 750         s = NCP_SBP(sb);
 751         if (!s) {
 752                 goto dflt;
 753         }
 754         if (!s->m.mounted_vol[0]) {
 755                 goto dflt;
 756         }
 757
 758         err = ncp_dirhandle_alloc(s, ni->volNumber, ni->DosDirNum, &dh);
 759         if (err) {
 760                 goto dflt;
 761         }
 762         err = ncp_get_directory_info(s, dh, &vi);
 763         ncp_dirhandle_free(s, dh);
 764         if (err) {
 765                 goto dflt;
 766         }
 767         buf->f_type = NCP_SUPER_MAGIC;
 768         buf->f_bsize = vi.sectors_per_block * 512;
 769         buf->f_blocks = vi.total_blocks;
 770         buf->f_bfree = vi.free_blocks;
 771         buf->f_bavail = vi.free_blocks;
 772         buf->f_files = vi.total_dir_entries;
 773         buf->f_ffree = vi.available_dir_entries;
 774         buf->f_namelen = 12;
 775         return 0;
 776
 777         /* We cannot say how much disk space is left on a mounted
 778            NetWare Server, because free space is distributed over
 779            volumes, and the current user might have disk quotas. So
 780            free space is not that simple to determine. Our decision
 781            here is to err conservatively. */
 782
 783 dflt:;
 784         buf->f_type = NCP_SUPER_MAGIC;
 785         buf->f_bsize = NCP_BLOCK_SIZE;
 786         buf->f_blocks = 0;
 787         buf->f_bfree = 0;
 788         buf->f_bavail = 0;
 789         buf->f_namelen = 12;
 790         return 0;
 791 }
 792
 793 int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
 794 {
 795         struct inode *inode = dentry->d_inode;
 796         int result = 0;
 797         __le32 info_mask;
 798         struct nw_modify_dos_info info;
 799         struct ncp_server *server;
 800
 801         result = -EIO;
 802
 803         lock_kernel();
 804
 805         server = NCP_SERVER(inode);
 806         if ((!server) || !ncp_conn_valid(server))
 807                 goto out;
 808
 809         /* ageing the dentry to force validation */
 810         ncp_age_dentry(server, dentry);
 811
 812         result = inode_change_ok(inode, attr);
 813         if (result < 0)
 814                 goto out;
 815
 816         result = -EPERM;
 817         if (((attr->ia_valid & ATTR_UID) &&
 818              (attr->ia_uid != server->m.uid)))
 819                 goto out;
 820
 821         if (((attr->ia_valid & ATTR_GID) &&
 822              (attr->ia_gid != server->m.gid)))
 823                 goto out;
 824
 825         if (((attr->ia_valid & ATTR_MODE) &&
 826              (attr->ia_mode &
 827               ~(S_IFREG | S_IFDIR | S_IRWXUGO))))
 828                 goto out;
 829
 830         info_mask = 0;
 831         memset(&info, 0, sizeof(info));
 832
 833 #if 1
 834         if ((attr->ia_valid & ATTR_MODE) != 0)
 835         {
 836                 umode_t newmode = attr->ia_mode;
 837
 838                 info_mask |= DM_ATTRIBUTES;
 839
 840                 if (S_ISDIR(inode->i_mode)) {
 841                         newmode &= server->m.dir_mode;
 842                 } else {
 843 #ifdef CONFIG_NCPFS_EXTRAS
 844                         if (server->m.flags & NCP_MOUNT_EXTRAS) {
 845                                 /* any non-default execute bit set */
 846                                 if (newmode & ~server->m.file_mode & S_IXUGO)
 847                                         info.attributes |= aSHARED | aSYSTEM;
 848                                 /* read for group/world and not in default file_mode */
 849                                 else if (newmode & ~server->m.file_mode & S_IRUGO)
 850                                         info.attributes |= aSHARED;
 851                         } else
 852 #endif
 853                                 newmode &= server->m.file_mode;
 854                 }
 855                 if (newmode & S_IWUGO)
 856                         info.attributes &= ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
 857                 else
 858                         info.attributes |=  (aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
 859
 860 #ifdef CONFIG_NCPFS_NFS_NS
 861                 if (ncp_is_nfs_extras(server, NCP_FINFO(inode)->volNumber)) {
 862                         result = ncp_modify_nfs_info(server,
 863                                                      NCP_FINFO(inode)->volNumber,
 864                                                      NCP_FINFO(inode)->dirEntNum,
 865                                                      attr->ia_mode, 0);
 866                         if (result != 0)
 867                                 goto out;
 868                         info.attributes &= ~(aSHARED | aSYSTEM);
 869                         {
 870                                 /* mark partial success */
 871                                 struct iattr tmpattr;
 872
 873                                 tmpattr.ia_valid = ATTR_MODE;
 874                                 tmpattr.ia_mode = attr->ia_mode;
 875
 876                                 result = inode_setattr(inode, &tmpattr);
 877                                 if (result)
 878                                         goto out;
 879                         }
 880                 }
 881 #endif
 882         }
 883 #endif
 884
 885         /* Do SIZE before attributes, otherwise mtime together with size does not work...
 886          */
 887         if ((attr->ia_valid & ATTR_SIZE) != 0) {
 888                 int written;
 889
 890                 DPRINTK("ncpfs: trying to change size to %ld\n",
 891                         attr->ia_size);
 892
 893                 if ((result = ncp_make_open(inode, O_WRONLY)) < 0) {
 894                         result = -EACCES;
 895                         goto out;
 896                 }
 897                 ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle,
 898                           attr->ia_size, 0, "", &written);
 899
 900                 /* According to ndir, the changes only take effect after
 901                    closing the file */
 902                 ncp_inode_close(inode);
 903                 result = ncp_make_closed(inode);
 904                 if (result)
 905                         goto out;
 906                 {
 907                         struct iattr tmpattr;
 908
 909                         tmpattr.ia_valid = ATTR_SIZE;
 910                         tmpattr.ia_size = attr->ia_size;
 911
 912                         result = inode_setattr(inode, &tmpattr);
 913                         if (result)
 914                                 goto out;
 915                 }
 916         }
 917         if ((attr->ia_valid & ATTR_CTIME) != 0) {
 918                 info_mask |= (DM_CREATE_TIME | DM_CREATE_DATE);
 919                 ncp_date_unix2dos(attr->ia_ctime.tv_sec,
 920                              &info.creationTime, &info.creationDate);
 921         }
 922         if ((attr->ia_valid & ATTR_MTIME) != 0) {
 923                 info_mask |= (DM_MODIFY_TIME | DM_MODIFY_DATE);
 924                 ncp_date_unix2dos(attr->ia_mtime.tv_sec,
 925                                   &info.modifyTime, &info.modifyDate);
 926         }
 927         if ((attr->ia_valid & ATTR_ATIME) != 0) {
 928                 __le16 dummy;
 929                 info_mask |= (DM_LAST_ACCESS_DATE);
 930                 ncp_date_unix2dos(attr->ia_atime.tv_sec,
 931                                   &dummy, &info.lastAccessDate);
 932         }
 933         if (info_mask != 0) {
 934                 result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),
 935                                       inode, info_mask, &info);
 936                 if (result != 0) {
 937                         result = -EACCES;
 938
 939                         if (info_mask == (DM_CREATE_TIME | DM_CREATE_DATE)) {
 940                                 /* NetWare seems not to allow this. I
 941                                    do not know why. So, just tell the
 942                                    user everything went fine. This is
 943                                    a terrible hack, but I do not know
 944                                    how to do this correctly. */
 945                                 result = 0;
 946                         } else
 947                                 goto out;
 948                 }
 949 #ifdef CONFIG_NCPFS_STRONG
 950                 if ((!result) && (info_mask & DM_ATTRIBUTES))
 951                         NCP_FINFO(inode)->nwattr = info.attributes;
 952 #endif
 953         }
 954         if (!result)
 955                 result = inode_setattr(inode, attr);
 956 out:
 957         unlock_kernel();
 958         return result;
 959 }
 960
 961 static int ncp_get_sb(struct file_system_type *fs_type,
 962         int flags, const char *dev_name, void *data, struct vfsmount *mnt)
 963 {
 964         return get_sb_nodev(fs_type, flags, data, ncp_fill_super, mnt);
 965 }
 966
 967 static struct file_system_type ncp_fs_type = {
 968         .owner          = THIS_MODULE,
 969         .name           = "ncpfs",
 970         .get_sb         = ncp_get_sb,
 971         .kill_sb        = kill_anon_super,
 972 };
 973
 974 static int __init init_ncp_fs(void)
 975 {
 976         int err;
 977         DPRINTK("ncpfs: init_module called\n");
 978
 979         err = init_inodecache();
 980         if (err)
 981                 goto out1;
 982         err = register_filesystem(&ncp_fs_type);
 983         if (err)
 984                 goto out;
 985         return 0;
 986 out:
 987         destroy_inodecache();
 988 out1:
 989         return err;
 990 }
 991
 992 static void __exit exit_ncp_fs(void)
 993 {
 994         DPRINTK("ncpfs: cleanup_module called\n");
 995         unregister_filesystem(&ncp_fs_type);
 996         destroy_inodecache();
 997 }
 998
 999 module_init(init_ncp_fs)
1000 module_exit(exit_ncp_fs)
1001 MODULE_LICENSE("GPL");