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