Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 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 super_block *, 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 | init_MUTEX(&ei->open_sem); |
| 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 | 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 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 | if (S_ISDIR(inode->i_mode)) { |
| 290 | DDPRINTK("ncp_delete_inode: put directory %ld\n", inode->i_ino); |
| 291 | } |
| 292 | |
| 293 | if (ncp_make_closed(inode) != 0) { |
| 294 | /* We can't do anything but complain. */ |
| 295 | printk(KERN_ERR "ncp_delete_inode: could not close\n"); |
| 296 | } |
| 297 | clear_inode(inode); |
| 298 | } |
| 299 | |
| 300 | static void ncp_stop_tasks(struct ncp_server *server) { |
| 301 | struct sock* sk = server->ncp_sock->sk; |
| 302 | |
| 303 | sk->sk_error_report = server->error_report; |
| 304 | sk->sk_data_ready = server->data_ready; |
| 305 | sk->sk_write_space = server->write_space; |
| 306 | del_timer_sync(&server->timeout_tm); |
| 307 | flush_scheduled_work(); |
| 308 | } |
| 309 | |
| 310 | static const struct ncp_option ncp_opts[] = { |
| 311 | { "uid", OPT_INT, 'u' }, |
| 312 | { "gid", OPT_INT, 'g' }, |
| 313 | { "owner", OPT_INT, 'o' }, |
| 314 | { "mode", OPT_INT, 'm' }, |
| 315 | { "dirmode", OPT_INT, 'd' }, |
| 316 | { "timeout", OPT_INT, 't' }, |
| 317 | { "retry", OPT_INT, 'r' }, |
| 318 | { "flags", OPT_INT, 'f' }, |
| 319 | { "wdogpid", OPT_INT, 'w' }, |
| 320 | { "ncpfd", OPT_INT, 'n' }, |
| 321 | { "infofd", OPT_INT, 'i' }, /* v5 */ |
| 322 | { "version", OPT_INT, 'v' }, |
| 323 | { NULL, 0, 0 } }; |
| 324 | |
| 325 | static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) { |
| 326 | int optval; |
| 327 | char *optarg; |
| 328 | unsigned long optint; |
| 329 | int version = 0; |
| 330 | |
| 331 | data->flags = 0; |
| 332 | data->int_flags = 0; |
| 333 | data->mounted_uid = 0; |
| 334 | data->wdog_pid = -1; |
| 335 | data->ncp_fd = ~0; |
| 336 | data->time_out = 10; |
| 337 | data->retry_count = 20; |
| 338 | data->uid = 0; |
| 339 | data->gid = 0; |
| 340 | data->file_mode = 0600; |
| 341 | data->dir_mode = 0700; |
| 342 | data->info_fd = -1; |
| 343 | data->mounted_vol[0] = 0; |
| 344 | |
| 345 | while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) { |
| 346 | if (optval < 0) |
| 347 | return optval; |
| 348 | switch (optval) { |
| 349 | case 'u': |
| 350 | data->uid = optint; |
| 351 | break; |
| 352 | case 'g': |
| 353 | data->gid = optint; |
| 354 | break; |
| 355 | case 'o': |
| 356 | data->mounted_uid = optint; |
| 357 | break; |
| 358 | case 'm': |
| 359 | data->file_mode = optint; |
| 360 | break; |
| 361 | case 'd': |
| 362 | data->dir_mode = optint; |
| 363 | break; |
| 364 | case 't': |
| 365 | data->time_out = optint; |
| 366 | break; |
| 367 | case 'r': |
| 368 | data->retry_count = optint; |
| 369 | break; |
| 370 | case 'f': |
| 371 | data->flags = optint; |
| 372 | break; |
| 373 | case 'w': |
| 374 | data->wdog_pid = optint; |
| 375 | break; |
| 376 | case 'n': |
| 377 | data->ncp_fd = optint; |
| 378 | break; |
| 379 | case 'i': |
| 380 | data->info_fd = optint; |
| 381 | break; |
| 382 | case 'v': |
| 383 | if (optint < NCP_MOUNT_VERSION_V4) { |
| 384 | return -ECHRNG; |
| 385 | } |
| 386 | if (optint > NCP_MOUNT_VERSION_V5) { |
| 387 | return -ECHRNG; |
| 388 | } |
| 389 | version = optint; |
| 390 | break; |
| 391 | |
| 392 | } |
| 393 | } |
| 394 | return 0; |
| 395 | } |
| 396 | |
| 397 | static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent) |
| 398 | { |
| 399 | struct ncp_mount_data_kernel data; |
| 400 | struct ncp_server *server; |
| 401 | struct file *ncp_filp; |
| 402 | struct inode *root_inode; |
| 403 | struct inode *sock_inode; |
| 404 | struct socket *sock; |
| 405 | int error; |
| 406 | int default_bufsize; |
| 407 | #ifdef CONFIG_NCPFS_PACKET_SIGNING |
| 408 | int options; |
| 409 | #endif |
| 410 | struct ncp_entry_info finfo; |
| 411 | |
| 412 | server = kmalloc(sizeof(struct ncp_server), GFP_KERNEL); |
| 413 | if (!server) |
| 414 | return -ENOMEM; |
| 415 | sb->s_fs_info = server; |
| 416 | memset(server, 0, sizeof(struct ncp_server)); |
| 417 | |
| 418 | error = -EFAULT; |
| 419 | if (raw_data == NULL) |
| 420 | goto out; |
| 421 | switch (*(int*)raw_data) { |
| 422 | case NCP_MOUNT_VERSION: |
| 423 | { |
| 424 | struct ncp_mount_data* md = (struct ncp_mount_data*)raw_data; |
| 425 | |
| 426 | data.flags = md->flags; |
| 427 | data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE; |
| 428 | data.mounted_uid = md->mounted_uid; |
| 429 | data.wdog_pid = md->wdog_pid; |
| 430 | data.ncp_fd = md->ncp_fd; |
| 431 | data.time_out = md->time_out; |
| 432 | data.retry_count = md->retry_count; |
| 433 | data.uid = md->uid; |
| 434 | data.gid = md->gid; |
| 435 | data.file_mode = md->file_mode; |
| 436 | data.dir_mode = md->dir_mode; |
| 437 | data.info_fd = -1; |
| 438 | memcpy(data.mounted_vol, md->mounted_vol, |
| 439 | NCP_VOLNAME_LEN+1); |
| 440 | } |
| 441 | break; |
| 442 | case NCP_MOUNT_VERSION_V4: |
| 443 | { |
| 444 | struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data; |
| 445 | |
| 446 | data.flags = md->flags; |
| 447 | data.int_flags = 0; |
| 448 | data.mounted_uid = md->mounted_uid; |
| 449 | data.wdog_pid = md->wdog_pid; |
| 450 | data.ncp_fd = md->ncp_fd; |
| 451 | data.time_out = md->time_out; |
| 452 | data.retry_count = md->retry_count; |
| 453 | data.uid = md->uid; |
| 454 | data.gid = md->gid; |
| 455 | data.file_mode = md->file_mode; |
| 456 | data.dir_mode = md->dir_mode; |
| 457 | data.info_fd = -1; |
| 458 | data.mounted_vol[0] = 0; |
| 459 | } |
| 460 | break; |
| 461 | default: |
| 462 | error = -ECHRNG; |
| 463 | if (memcmp(raw_data, "vers", 4) == 0) { |
| 464 | error = ncp_parse_options(&data, raw_data); |
| 465 | } |
| 466 | if (error) |
| 467 | goto out; |
| 468 | break; |
| 469 | } |
| 470 | error = -EBADF; |
| 471 | ncp_filp = fget(data.ncp_fd); |
| 472 | if (!ncp_filp) |
| 473 | goto out; |
| 474 | error = -ENOTSOCK; |
| 475 | sock_inode = ncp_filp->f_dentry->d_inode; |
| 476 | if (!S_ISSOCK(sock_inode->i_mode)) |
| 477 | goto out_fput; |
| 478 | sock = SOCKET_I(sock_inode); |
| 479 | if (!sock) |
| 480 | goto out_fput; |
| 481 | |
| 482 | if (sock->type == SOCK_STREAM) |
| 483 | default_bufsize = 0xF000; |
| 484 | else |
| 485 | default_bufsize = 1024; |
| 486 | |
| 487 | sb->s_flags |= MS_NODIRATIME; /* probably even noatime */ |
| 488 | sb->s_maxbytes = 0xFFFFFFFFU; |
| 489 | sb->s_blocksize = 1024; /* Eh... Is this correct? */ |
| 490 | sb->s_blocksize_bits = 10; |
| 491 | sb->s_magic = NCP_SUPER_MAGIC; |
| 492 | sb->s_op = &ncp_sops; |
| 493 | |
| 494 | server = NCP_SBP(sb); |
| 495 | memset(server, 0, sizeof(*server)); |
| 496 | |
| 497 | server->ncp_filp = ncp_filp; |
| 498 | server->ncp_sock = sock; |
| 499 | |
| 500 | if (data.info_fd != -1) { |
| 501 | struct socket *info_sock; |
| 502 | |
| 503 | error = -EBADF; |
| 504 | server->info_filp = fget(data.info_fd); |
| 505 | if (!server->info_filp) |
| 506 | goto out_fput; |
| 507 | error = -ENOTSOCK; |
| 508 | sock_inode = server->info_filp->f_dentry->d_inode; |
| 509 | if (!S_ISSOCK(sock_inode->i_mode)) |
| 510 | goto out_fput2; |
| 511 | info_sock = SOCKET_I(sock_inode); |
| 512 | if (!info_sock) |
| 513 | goto out_fput2; |
| 514 | error = -EBADFD; |
| 515 | if (info_sock->type != SOCK_STREAM) |
| 516 | goto out_fput2; |
| 517 | server->info_sock = info_sock; |
| 518 | } |
| 519 | |
| 520 | /* server->lock = 0; */ |
| 521 | init_MUTEX(&server->sem); |
| 522 | server->packet = NULL; |
| 523 | /* server->buffer_size = 0; */ |
| 524 | /* server->conn_status = 0; */ |
| 525 | /* server->root_dentry = NULL; */ |
| 526 | /* server->root_setuped = 0; */ |
| 527 | #ifdef CONFIG_NCPFS_PACKET_SIGNING |
| 528 | /* server->sign_wanted = 0; */ |
| 529 | /* server->sign_active = 0; */ |
| 530 | #endif |
| 531 | server->auth.auth_type = NCP_AUTH_NONE; |
| 532 | /* server->auth.object_name_len = 0; */ |
| 533 | /* server->auth.object_name = NULL; */ |
| 534 | /* server->auth.object_type = 0; */ |
| 535 | /* server->priv.len = 0; */ |
| 536 | /* server->priv.data = NULL; */ |
| 537 | |
| 538 | server->m = data; |
| 539 | /* Althought anything producing this is buggy, it happens |
| 540 | now because of PATH_MAX changes.. */ |
| 541 | if (server->m.time_out < 1) { |
| 542 | server->m.time_out = 10; |
| 543 | printk(KERN_INFO "You need to recompile your ncpfs utils..\n"); |
| 544 | } |
| 545 | server->m.time_out = server->m.time_out * HZ / 100; |
| 546 | server->m.file_mode = (server->m.file_mode & S_IRWXUGO) | S_IFREG; |
| 547 | server->m.dir_mode = (server->m.dir_mode & S_IRWXUGO) | S_IFDIR; |
| 548 | |
| 549 | #ifdef CONFIG_NCPFS_NLS |
| 550 | /* load the default NLS charsets */ |
| 551 | server->nls_vol = load_nls_default(); |
| 552 | server->nls_io = load_nls_default(); |
| 553 | #endif /* CONFIG_NCPFS_NLS */ |
| 554 | |
| 555 | server->dentry_ttl = 0; /* no caching */ |
| 556 | |
| 557 | INIT_LIST_HEAD(&server->tx.requests); |
| 558 | init_MUTEX(&server->rcv.creq_sem); |
| 559 | server->tx.creq = NULL; |
| 560 | server->rcv.creq = NULL; |
| 561 | server->data_ready = sock->sk->sk_data_ready; |
| 562 | server->write_space = sock->sk->sk_write_space; |
| 563 | server->error_report = sock->sk->sk_error_report; |
| 564 | sock->sk->sk_user_data = server; |
| 565 | |
| 566 | init_timer(&server->timeout_tm); |
| 567 | #undef NCP_PACKET_SIZE |
| 568 | #define NCP_PACKET_SIZE 131072 |
| 569 | error = -ENOMEM; |
| 570 | server->packet_size = NCP_PACKET_SIZE; |
| 571 | server->packet = vmalloc(NCP_PACKET_SIZE); |
| 572 | if (server->packet == NULL) |
| 573 | goto out_nls; |
| 574 | |
| 575 | sock->sk->sk_data_ready = ncp_tcp_data_ready; |
| 576 | sock->sk->sk_error_report = ncp_tcp_error_report; |
| 577 | if (sock->type == SOCK_STREAM) { |
| 578 | server->rcv.ptr = (unsigned char*)&server->rcv.buf; |
| 579 | server->rcv.len = 10; |
| 580 | server->rcv.state = 0; |
| 581 | INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc, server); |
| 582 | INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc, server); |
| 583 | sock->sk->sk_write_space = ncp_tcp_write_space; |
| 584 | } else { |
| 585 | INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc, server); |
| 586 | INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc, server); |
| 587 | server->timeout_tm.data = (unsigned long)server; |
| 588 | server->timeout_tm.function = ncpdgram_timeout_call; |
| 589 | } |
| 590 | |
| 591 | ncp_lock_server(server); |
| 592 | error = ncp_connect(server); |
| 593 | ncp_unlock_server(server); |
| 594 | if (error < 0) |
| 595 | goto out_packet; |
| 596 | DPRINTK("ncp_fill_super: NCP_SBP(sb) = %x\n", (int) NCP_SBP(sb)); |
| 597 | |
| 598 | error = -EMSGSIZE; /* -EREMOTESIDEINCOMPATIBLE */ |
| 599 | #ifdef CONFIG_NCPFS_PACKET_SIGNING |
| 600 | if (ncp_negotiate_size_and_options(server, default_bufsize, |
| 601 | NCP_DEFAULT_OPTIONS, &(server->buffer_size), &options) == 0) |
| 602 | { |
| 603 | if (options != NCP_DEFAULT_OPTIONS) |
| 604 | { |
| 605 | if (ncp_negotiate_size_and_options(server, |
| 606 | default_bufsize, |
| 607 | options & 2, |
| 608 | &(server->buffer_size), &options) != 0) |
| 609 | |
| 610 | { |
| 611 | goto out_disconnect; |
| 612 | } |
| 613 | } |
| 614 | if (options & 2) |
| 615 | server->sign_wanted = 1; |
| 616 | } |
| 617 | else |
| 618 | #endif /* CONFIG_NCPFS_PACKET_SIGNING */ |
| 619 | if (ncp_negotiate_buffersize(server, default_bufsize, |
| 620 | &(server->buffer_size)) != 0) |
| 621 | goto out_disconnect; |
| 622 | DPRINTK("ncpfs: bufsize = %d\n", server->buffer_size); |
| 623 | |
| 624 | memset(&finfo, 0, sizeof(finfo)); |
| 625 | finfo.i.attributes = aDIR; |
| 626 | finfo.i.dataStreamSize = 0; /* ignored */ |
| 627 | finfo.i.dirEntNum = 0; |
| 628 | finfo.i.DosDirNum = 0; |
| 629 | #ifdef CONFIG_NCPFS_SMALLDOS |
| 630 | finfo.i.NSCreator = NW_NS_DOS; |
| 631 | #endif |
| 632 | finfo.volume = NCP_NUMBER_OF_VOLUMES; |
| 633 | /* set dates of mountpoint to Jan 1, 1986; 00:00 */ |
| 634 | finfo.i.creationTime = finfo.i.modifyTime |
| 635 | = cpu_to_le16(0x0000); |
| 636 | finfo.i.creationDate = finfo.i.modifyDate |
| 637 | = finfo.i.lastAccessDate |
| 638 | = cpu_to_le16(0x0C21); |
| 639 | finfo.i.nameLen = 0; |
| 640 | finfo.i.entryName[0] = '\0'; |
| 641 | |
| 642 | finfo.opened = 0; |
| 643 | finfo.ino = 2; /* tradition */ |
| 644 | |
| 645 | server->name_space[finfo.volume] = NW_NS_DOS; |
| 646 | |
| 647 | error = -ENOMEM; |
| 648 | root_inode = ncp_iget(sb, &finfo); |
| 649 | if (!root_inode) |
| 650 | goto out_disconnect; |
| 651 | DPRINTK("ncp_fill_super: root vol=%d\n", NCP_FINFO(root_inode)->volNumber); |
| 652 | sb->s_root = d_alloc_root(root_inode); |
| 653 | if (!sb->s_root) |
| 654 | goto out_no_root; |
| 655 | sb->s_root->d_op = &ncp_root_dentry_operations; |
| 656 | return 0; |
| 657 | |
| 658 | out_no_root: |
| 659 | iput(root_inode); |
| 660 | out_disconnect: |
| 661 | ncp_lock_server(server); |
| 662 | ncp_disconnect(server); |
| 663 | ncp_unlock_server(server); |
| 664 | out_packet: |
| 665 | ncp_stop_tasks(server); |
| 666 | vfree(server->packet); |
| 667 | out_nls: |
| 668 | #ifdef CONFIG_NCPFS_NLS |
| 669 | unload_nls(server->nls_io); |
| 670 | unload_nls(server->nls_vol); |
| 671 | #endif |
| 672 | out_fput2: |
| 673 | if (server->info_filp) |
| 674 | fput(server->info_filp); |
| 675 | out_fput: |
| 676 | /* 23/12/1998 Marcin Dalecki <dalecki@cs.net.pl>: |
| 677 | * |
| 678 | * The previously used put_filp(ncp_filp); was bogous, since |
| 679 | * it doesn't proper unlocking. |
| 680 | */ |
| 681 | fput(ncp_filp); |
| 682 | out: |
| 683 | sb->s_fs_info = NULL; |
| 684 | kfree(server); |
| 685 | return error; |
| 686 | } |
| 687 | |
| 688 | static void ncp_put_super(struct super_block *sb) |
| 689 | { |
| 690 | struct ncp_server *server = NCP_SBP(sb); |
| 691 | |
| 692 | ncp_lock_server(server); |
| 693 | ncp_disconnect(server); |
| 694 | ncp_unlock_server(server); |
| 695 | |
| 696 | ncp_stop_tasks(server); |
| 697 | |
| 698 | #ifdef CONFIG_NCPFS_NLS |
| 699 | /* unload the NLS charsets */ |
| 700 | if (server->nls_vol) |
| 701 | { |
| 702 | unload_nls(server->nls_vol); |
| 703 | server->nls_vol = NULL; |
| 704 | } |
| 705 | if (server->nls_io) |
| 706 | { |
| 707 | unload_nls(server->nls_io); |
| 708 | server->nls_io = NULL; |
| 709 | } |
| 710 | #endif /* CONFIG_NCPFS_NLS */ |
| 711 | |
| 712 | if (server->info_filp) |
| 713 | fput(server->info_filp); |
| 714 | fput(server->ncp_filp); |
| 715 | kill_proc(server->m.wdog_pid, SIGTERM, 1); |
| 716 | |
| 717 | if (server->priv.data) |
| 718 | ncp_kfree_s(server->priv.data, server->priv.len); |
| 719 | if (server->auth.object_name) |
| 720 | ncp_kfree_s(server->auth.object_name, server->auth.object_name_len); |
| 721 | vfree(server->packet); |
| 722 | sb->s_fs_info = NULL; |
| 723 | kfree(server); |
| 724 | } |
| 725 | |
| 726 | static int ncp_statfs(struct super_block *sb, 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 | 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 | #ifdef DEBUG_NCP_MALLOC |
| 960 | int ncp_malloced; |
| 961 | int ncp_current_malloced; |
| 962 | #endif |
| 963 | |
| 964 | static struct super_block *ncp_get_sb(struct file_system_type *fs_type, |
| 965 | int flags, const char *dev_name, void *data) |
| 966 | { |
| 967 | return get_sb_nodev(fs_type, flags, data, ncp_fill_super); |
| 968 | } |
| 969 | |
| 970 | static struct file_system_type ncp_fs_type = { |
| 971 | .owner = THIS_MODULE, |
| 972 | .name = "ncpfs", |
| 973 | .get_sb = ncp_get_sb, |
| 974 | .kill_sb = kill_anon_super, |
| 975 | }; |
| 976 | |
| 977 | static int __init init_ncp_fs(void) |
| 978 | { |
| 979 | int err; |
| 980 | DPRINTK("ncpfs: init_module called\n"); |
| 981 | |
| 982 | #ifdef DEBUG_NCP_MALLOC |
| 983 | ncp_malloced = 0; |
| 984 | ncp_current_malloced = 0; |
| 985 | #endif |
| 986 | err = init_inodecache(); |
| 987 | if (err) |
| 988 | goto out1; |
| 989 | err = register_filesystem(&ncp_fs_type); |
| 990 | if (err) |
| 991 | goto out; |
| 992 | return 0; |
| 993 | out: |
| 994 | destroy_inodecache(); |
| 995 | out1: |
| 996 | return err; |
| 997 | } |
| 998 | |
| 999 | static void __exit exit_ncp_fs(void) |
| 1000 | { |
| 1001 | DPRINTK("ncpfs: cleanup_module called\n"); |
| 1002 | unregister_filesystem(&ncp_fs_type); |
| 1003 | destroy_inodecache(); |
| 1004 | #ifdef DEBUG_NCP_MALLOC |
| 1005 | PRINTK("ncp_malloced: %d\n", ncp_malloced); |
| 1006 | PRINTK("ncp_current_malloced: %d\n", ncp_current_malloced); |
| 1007 | #endif |
| 1008 | } |
| 1009 | |
| 1010 | module_init(init_ncp_fs) |
| 1011 | module_exit(exit_ncp_fs) |
| 1012 | MODULE_LICENSE("GPL"); |