SAFE public projects git trees. - safe/jmp/linux-2.6/blob - fs/quota/quota.c

   1 /*
   2  * Quota code necessary even when VFS quota support is not compiled
   3  * into the kernel.  The interesting stuff is over in dquot.c, here
   4  * we have symbols for initial quotactl(2) handling, the sysctl(2)
   5  * variables, etc - things needed even when quota support disabled.
   6  */
   7
   8 #include <linux/fs.h>
   9 #include <linux/namei.h>
  10 #include <linux/slab.h>
  11 #include <asm/current.h>
  12 #include <asm/uaccess.h>
  13 #include <linux/compat.h>
  14 #include <linux/kernel.h>
  15 #include <linux/security.h>
  16 #include <linux/syscalls.h>
  17 #include <linux/buffer_head.h>
  18 #include <linux/capability.h>
  19 #include <linux/quotaops.h>
  20 #include <linux/types.h>
  21 #include <net/netlink.h>
  22 #include <net/genetlink.h>
  23
  24 /* Check validity of generic quotactl commands */
  25 static int generic_quotactl_valid(struct super_block *sb, int type, int cmd,
  26                                   qid_t id)
  27 {
  28         if (type >= MAXQUOTAS)
  29                 return -EINVAL;
  30         if (!sb && cmd != Q_SYNC)
  31                 return -ENODEV;
  32         /* Is operation supported? */
  33         if (sb && !sb->s_qcop)
  34                 return -ENOSYS;
  35
  36         /* Check privileges */
  37         if (cmd == Q_GETQUOTA) {
  38                 if (((type == USRQUOTA && current_euid() != id) ||
  39                      (type == GRPQUOTA && !in_egroup_p(id))) &&
  40                     !capable(CAP_SYS_ADMIN))
  41                         return -EPERM;
  42         }
  43         else if (cmd != Q_GETFMT && cmd != Q_SYNC && cmd != Q_GETINFO)
  44                 if (!capable(CAP_SYS_ADMIN))
  45                         return -EPERM;
  46
  47         return 0;
  48 }
  49
  50 /* Check validity of XFS Quota Manager commands */
  51 static int xqm_quotactl_valid(struct super_block *sb, int type, int cmd,
  52                               qid_t id)
  53 {
  54         if (type >= XQM_MAXQUOTAS)
  55                 return -EINVAL;
  56         if (!sb)
  57                 return -ENODEV;
  58         if (!sb->s_qcop)
  59                 return -ENOSYS;
  60
  61         /* Check privileges */
  62         if (cmd == Q_XGETQUOTA) {
  63                 if (((type == XQM_USRQUOTA && current_euid() != id) ||
  64                      (type == XQM_GRPQUOTA && !in_egroup_p(id))) &&
  65                      !capable(CAP_SYS_ADMIN))
  66                         return -EPERM;
  67         } else if (cmd != Q_XGETQSTAT && cmd != Q_XQUOTASYNC) {
  68                 if (!capable(CAP_SYS_ADMIN))
  69                         return -EPERM;
  70         }
  71
  72         return 0;
  73 }
  74
  75 static int check_quotactl_valid(struct super_block *sb, int type, int cmd,
  76                                 qid_t id)
  77 {
  78         int error;
  79
  80         if (XQM_COMMAND(cmd))
  81                 error = xqm_quotactl_valid(sb, type, cmd, id);
  82         else
  83                 error = generic_quotactl_valid(sb, type, cmd, id);
  84         if (!error)
  85                 error = security_quotactl(cmd, type, id, sb);
  86         return error;
  87 }
  88
  89 #ifdef CONFIG_QUOTA
  90 void sync_quota_sb(struct super_block *sb, int type)
  91 {
  92         int cnt;
  93
  94         if (!sb->s_qcop->quota_sync)
  95                 return;
  96
  97         sb->s_qcop->quota_sync(sb, type);
  98
  99         if (sb_dqopt(sb)->flags & DQUOT_QUOTA_SYS_FILE)
 100                 return;
 101         /* This is not very clever (and fast) but currently I don't know about
 102          * any other simple way of getting quota data to disk and we must get
 103          * them there for userspace to be visible... */
 104         if (sb->s_op->sync_fs)
 105                 sb->s_op->sync_fs(sb, 1);
 106         sync_blockdev(sb->s_bdev);
 107
 108         /*
 109          * Now when everything is written we can discard the pagecache so
 110          * that userspace sees the changes.
 111          */
 112         mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
 113         for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
 114                 if (type != -1 && cnt != type)
 115                         continue;
 116                 if (!sb_has_quota_active(sb, cnt))
 117                         continue;
 118                 mutex_lock_nested(&sb_dqopt(sb)->files[cnt]->i_mutex,
 119                                   I_MUTEX_QUOTA);
 120                 truncate_inode_pages(&sb_dqopt(sb)->files[cnt]->i_data, 0);
 121                 mutex_unlock(&sb_dqopt(sb)->files[cnt]->i_mutex);
 122         }
 123         mutex_unlock(&sb_dqopt(sb)->dqonoff_mutex);
 124 }
 125 #endif
 126
 127 static int quota_sync_all(int type)
 128 {
 129         struct super_block *sb;
 130         int cnt;
 131         int ret;
 132
 133         if (type >= MAXQUOTAS)
 134                 return -EINVAL;
 135         ret = security_quotactl(Q_SYNC, type, 0, NULL);
 136         if (ret)
 137                 return ret;
 138
 139         spin_lock(&sb_lock);
 140 restart:
 141         list_for_each_entry(sb, &super_blocks, s_list) {
 142                 /* This test just improves performance so it needn't be
 143                  * reliable... */
 144                 for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
 145                         if (type != -1 && type != cnt)
 146                                 continue;
 147                         if (!sb_has_quota_active(sb, cnt))
 148                                 continue;
 149                         if (!info_dirty(&sb_dqopt(sb)->info[cnt]) &&
 150                            list_empty(&sb_dqopt(sb)->info[cnt].dqi_dirty_list))
 151                                 continue;
 152                         break;
 153                 }
 154                 if (cnt == MAXQUOTAS)
 155                         continue;
 156                 sb->s_count++;
 157                 spin_unlock(&sb_lock);
 158                 down_read(&sb->s_umount);
 159                 if (sb->s_root)
 160                         sync_quota_sb(sb, type);
 161                 up_read(&sb->s_umount);
 162                 spin_lock(&sb_lock);
 163                 if (__put_super_and_need_restart(sb))
 164                         goto restart;
 165         }
 166         spin_unlock(&sb_lock);
 167
 168         return 0;
 169 }
 170
 171 static int quota_quotaon(struct super_block *sb, int type, int cmd, qid_t id,
 172                          void __user *addr)
 173 {
 174         char *pathname;
 175         int ret = -ENOSYS;
 176
 177         pathname = getname(addr);
 178         if (IS_ERR(pathname))
 179                 return PTR_ERR(pathname);
 180         if (sb->s_qcop->quota_on)
 181                 ret = sb->s_qcop->quota_on(sb, type, id, pathname, 0);
 182         putname(pathname);
 183         return ret;
 184 }
 185
 186 static int quota_getfmt(struct super_block *sb, int type, void __user *addr)
 187 {
 188         __u32 fmt;
 189
 190         down_read(&sb_dqopt(sb)->dqptr_sem);
 191         if (!sb_has_quota_active(sb, type)) {
 192                 up_read(&sb_dqopt(sb)->dqptr_sem);
 193                 return -ESRCH;
 194         }
 195         fmt = sb_dqopt(sb)->info[type].dqi_format->qf_fmt_id;
 196         up_read(&sb_dqopt(sb)->dqptr_sem);
 197         if (copy_to_user(addr, &fmt, sizeof(fmt)))
 198                 return -EFAULT;
 199         return 0;
 200 }
 201
 202 static int quota_getinfo(struct super_block *sb, int type, void __user *addr)
 203 {
 204         struct if_dqinfo info;
 205         int ret;
 206
 207         if (!sb_has_quota_active(sb, type))
 208                 return -ESRCH;
 209         if (!sb->s_qcop->get_info)
 210                 return -ENOSYS;
 211         ret = sb->s_qcop->get_info(sb, type, &info);
 212         if (!ret && copy_to_user(addr, &info, sizeof(info)))
 213                 return -EFAULT;
 214         return ret;
 215 }
 216
 217 static int quota_setinfo(struct super_block *sb, int type, void __user *addr)
 218 {
 219         struct if_dqinfo info;
 220
 221         if (copy_from_user(&info, addr, sizeof(info)))
 222                 return -EFAULT;
 223         if (!sb_has_quota_active(sb, type))
 224                 return -ESRCH;
 225         if (!sb->s_qcop->set_info)
 226                 return -ENOSYS;
 227         return sb->s_qcop->set_info(sb, type, &info);
 228 }
 229
 230 static int quota_getquota(struct super_block *sb, int type, qid_t id,
 231                           void __user *addr)
 232 {
 233         struct if_dqblk idq;
 234         int ret;
 235
 236         if (!sb_has_quota_active(sb, type))
 237                 return -ESRCH;
 238         if (!sb->s_qcop->get_dqblk)
 239                 return -ENOSYS;
 240         ret = sb->s_qcop->get_dqblk(sb, type, id, &idq);
 241         if (ret)
 242                 return ret;
 243         if (copy_to_user(addr, &idq, sizeof(idq)))
 244                 return -EFAULT;
 245         return 0;
 246 }
 247
 248 static int quota_setquota(struct super_block *sb, int type, qid_t id,
 249                           void __user *addr)
 250 {
 251         struct if_dqblk idq;
 252
 253         if (copy_from_user(&idq, addr, sizeof(idq)))
 254                 return -EFAULT;
 255         if (!sb_has_quota_active(sb, type))
 256                 return -ESRCH;
 257         if (!sb->s_qcop->set_dqblk)
 258                 return -ENOSYS;
 259         return sb->s_qcop->set_dqblk(sb, type, id, &idq);
 260 }
 261
 262 static int quota_setxstate(struct super_block *sb, int cmd, void __user *addr)
 263 {
 264         __u32 flags;
 265
 266         if (copy_from_user(&flags, addr, sizeof(flags)))
 267                 return -EFAULT;
 268         if (!sb->s_qcop->set_xstate)
 269                 return -ENOSYS;
 270         return sb->s_qcop->set_xstate(sb, flags, cmd);
 271 }
 272
 273 static int quota_getxstate(struct super_block *sb, void __user *addr)
 274 {
 275         struct fs_quota_stat fqs;
 276         int ret;
 277
 278         if (!sb->s_qcop->get_xstate)
 279                 return -ENOSYS;
 280         ret = sb->s_qcop->get_xstate(sb, &fqs);
 281         if (!ret && copy_to_user(addr, &fqs, sizeof(fqs)))
 282                 return -EFAULT;
 283         return ret;
 284 }
 285
 286 static int quota_setxquota(struct super_block *sb, int type, qid_t id,
 287                            void __user *addr)
 288 {
 289         struct fs_disk_quota fdq;
 290
 291         if (copy_from_user(&fdq, addr, sizeof(fdq)))
 292                 return -EFAULT;
 293         if (!sb->s_qcop->set_xquota)
 294                 return -ENOSYS;
 295         return sb->s_qcop->set_xquota(sb, type, id, &fdq);
 296 }
 297
 298 static int quota_getxquota(struct super_block *sb, int type, qid_t id,
 299                            void __user *addr)
 300 {
 301         struct fs_disk_quota fdq;
 302         int ret;
 303
 304         if (!sb->s_qcop->get_xquota)
 305                 return -ENOSYS;
 306         ret = sb->s_qcop->get_xquota(sb, type, id, &fdq);
 307         if (!ret && copy_to_user(addr, &fdq, sizeof(fdq)))
 308                 return -EFAULT;
 309         return ret;
 310 }
 311
 312 /* Copy parameters and call proper function */
 313 static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id,
 314                        void __user *addr)
 315 {
 316         switch (cmd) {
 317         case Q_QUOTAON:
 318                 return quota_quotaon(sb, type, cmd, id, addr);
 319         case Q_QUOTAOFF:
 320                 if (!sb->s_qcop->quota_off)
 321                         return -ENOSYS;
 322                 return sb->s_qcop->quota_off(sb, type, 0);
 323         case Q_GETFMT:
 324                 return quota_getfmt(sb, type, addr);
 325         case Q_GETINFO:
 326                 return quota_getinfo(sb, type, addr);
 327         case Q_SETINFO:
 328                 return quota_setinfo(sb, type, addr);
 329         case Q_GETQUOTA:
 330                 return quota_getquota(sb, type, id, addr);
 331         case Q_SETQUOTA:
 332                 return quota_setquota(sb, type, id, addr);
 333         case Q_SYNC:
 334                 if (!sb->s_qcop->quota_sync)
 335                         return -ENOSYS;
 336                 sync_quota_sb(sb, type);
 337                 return 0;
 338         case Q_XQUOTAON:
 339         case Q_XQUOTAOFF:
 340         case Q_XQUOTARM:
 341                 return quota_setxstate(sb, cmd, addr);
 342         case Q_XGETQSTAT:
 343                 return quota_getxstate(sb, addr);
 344         case Q_XSETQLIM:
 345                 return quota_setxquota(sb, type, id, addr);
 346         case Q_XGETQUOTA:
 347                 return quota_getxquota(sb, type, id, addr);
 348         case Q_XQUOTASYNC:
 349                 if (!sb->s_qcop->quota_sync)
 350                         return -ENOSYS;
 351                 return sb->s_qcop->quota_sync(sb, type);
 352         default:
 353                 return -EINVAL;
 354         }
 355 }
 356
 357 /*
 358  * look up a superblock on which quota ops will be performed
 359  * - use the name of a block device to find the superblock thereon
 360  */
 361 static struct super_block *quotactl_block(const char __user *special)
 362 {
 363 #ifdef CONFIG_BLOCK
 364         struct block_device *bdev;
 365         struct super_block *sb;
 366         char *tmp = getname(special);
 367
 368         if (IS_ERR(tmp))
 369                 return ERR_CAST(tmp);
 370         bdev = lookup_bdev(tmp);
 371         putname(tmp);
 372         if (IS_ERR(bdev))
 373                 return ERR_CAST(bdev);
 374         sb = get_super(bdev);
 375         bdput(bdev);
 376         if (!sb)
 377                 return ERR_PTR(-ENODEV);
 378
 379         return sb;
 380 #else
 381         return ERR_PTR(-ENODEV);
 382 #endif
 383 }
 384
 385 /*
 386  * This is the system call interface. This communicates with
 387  * the user-level programs. Currently this only supports diskquota
 388  * calls. Maybe we need to add the process quotas etc. in the future,
 389  * but we probably should use rlimits for that.
 390  */
 391 SYSCALL_DEFINE4(quotactl, unsigned int, cmd, const char __user *, special,
 392                 qid_t, id, void __user *, addr)
 393 {
 394         uint cmds, type;
 395         struct super_block *sb = NULL;
 396         int ret;
 397
 398         cmds = cmd >> SUBCMDSHIFT;
 399         type = cmd & SUBCMDMASK;
 400
 401         /*
 402          * As a special case Q_SYNC can be called without a specific device.
 403          * It will iterate all superblocks that have quota enabled and call
 404          * the sync action on each of them.
 405          */
 406         if (!special) {
 407                 if (cmds == Q_SYNC)
 408                         return quota_sync_all(type);
 409                 return -ENODEV;
 410         }
 411
 412         sb = quotactl_block(special);
 413         if (IS_ERR(sb))
 414                 return PTR_ERR(sb);
 415
 416         ret = check_quotactl_valid(sb, type, cmds, id);
 417         if (ret >= 0)
 418                 ret = do_quotactl(sb, type, cmds, id, addr);
 419
 420         drop_super(sb);
 421         return ret;
 422 }
 423
 424 #if defined(CONFIG_COMPAT_FOR_U64_ALIGNMENT)
 425 /*
 426  * This code works only for 32 bit quota tools over 64 bit OS (x86_64, ia64)
 427  * and is necessary due to alignment problems.
 428  */
 429 struct compat_if_dqblk {
 430         compat_u64 dqb_bhardlimit;
 431         compat_u64 dqb_bsoftlimit;
 432         compat_u64 dqb_curspace;
 433         compat_u64 dqb_ihardlimit;
 434         compat_u64 dqb_isoftlimit;
 435         compat_u64 dqb_curinodes;
 436         compat_u64 dqb_btime;
 437         compat_u64 dqb_itime;
 438         compat_uint_t dqb_valid;
 439 };
 440
 441 /* XFS structures */
 442 struct compat_fs_qfilestat {
 443         compat_u64 dqb_bhardlimit;
 444         compat_u64 qfs_nblks;
 445         compat_uint_t qfs_nextents;
 446 };
 447
 448 struct compat_fs_quota_stat {
 449         __s8            qs_version;
 450         __u16           qs_flags;
 451         __s8            qs_pad;
 452         struct compat_fs_qfilestat      qs_uquota;
 453         struct compat_fs_qfilestat      qs_gquota;
 454         compat_uint_t   qs_incoredqs;
 455         compat_int_t    qs_btimelimit;
 456         compat_int_t    qs_itimelimit;
 457         compat_int_t    qs_rtbtimelimit;
 458         __u16           qs_bwarnlimit;
 459         __u16           qs_iwarnlimit;
 460 };
 461
 462 asmlinkage long sys32_quotactl(unsigned int cmd, const char __user *special,
 463                                                 qid_t id, void __user *addr)
 464 {
 465         unsigned int cmds;
 466         struct if_dqblk __user *dqblk;
 467         struct compat_if_dqblk __user *compat_dqblk;
 468         struct fs_quota_stat __user *fsqstat;
 469         struct compat_fs_quota_stat __user *compat_fsqstat;
 470         compat_uint_t data;
 471         u16 xdata;
 472         long ret;
 473
 474         cmds = cmd >> SUBCMDSHIFT;
 475
 476         switch (cmds) {
 477         case Q_GETQUOTA:
 478                 dqblk = compat_alloc_user_space(sizeof(struct if_dqblk));
 479                 compat_dqblk = addr;
 480                 ret = sys_quotactl(cmd, special, id, dqblk);
 481                 if (ret)
 482                         break;
 483                 if (copy_in_user(compat_dqblk, dqblk, sizeof(*compat_dqblk)) ||
 484                         get_user(data, &dqblk->dqb_valid) ||
 485                         put_user(data, &compat_dqblk->dqb_valid))
 486                         ret = -EFAULT;
 487                 break;
 488         case Q_SETQUOTA:
 489                 dqblk = compat_alloc_user_space(sizeof(struct if_dqblk));
 490                 compat_dqblk = addr;
 491                 ret = -EFAULT;
 492                 if (copy_in_user(dqblk, compat_dqblk, sizeof(*compat_dqblk)) ||
 493                         get_user(data, &compat_dqblk->dqb_valid) ||
 494                         put_user(data, &dqblk->dqb_valid))
 495                         break;
 496                 ret = sys_quotactl(cmd, special, id, dqblk);
 497                 break;
 498         case Q_XGETQSTAT:
 499                 fsqstat = compat_alloc_user_space(sizeof(struct fs_quota_stat));
 500                 compat_fsqstat = addr;
 501                 ret = sys_quotactl(cmd, special, id, fsqstat);
 502                 if (ret)
 503                         break;
 504                 ret = -EFAULT;
 505                 /* Copying qs_version, qs_flags, qs_pad */
 506                 if (copy_in_user(compat_fsqstat, fsqstat,
 507                         offsetof(struct compat_fs_quota_stat, qs_uquota)))
 508                         break;
 509                 /* Copying qs_uquota */
 510                 if (copy_in_user(&compat_fsqstat->qs_uquota,
 511                         &fsqstat->qs_uquota,
 512                         sizeof(compat_fsqstat->qs_uquota)) ||
 513                         get_user(data, &fsqstat->qs_uquota.qfs_nextents) ||
 514                         put_user(data, &compat_fsqstat->qs_uquota.qfs_nextents))
 515                         break;
 516                 /* Copying qs_gquota */
 517                 if (copy_in_user(&compat_fsqstat->qs_gquota,
 518                         &fsqstat->qs_gquota,
 519                         sizeof(compat_fsqstat->qs_gquota)) ||
 520                         get_user(data, &fsqstat->qs_gquota.qfs_nextents) ||
 521                         put_user(data, &compat_fsqstat->qs_gquota.qfs_nextents))
 522                         break;
 523                 /* Copying the rest */
 524                 if (copy_in_user(&compat_fsqstat->qs_incoredqs,
 525                         &fsqstat->qs_incoredqs,
 526                         sizeof(struct compat_fs_quota_stat) -
 527                         offsetof(struct compat_fs_quota_stat, qs_incoredqs)) ||
 528                         get_user(xdata, &fsqstat->qs_iwarnlimit) ||
 529                         put_user(xdata, &compat_fsqstat->qs_iwarnlimit))
 530                         break;
 531                 ret = 0;
 532                 break;
 533         default:
 534                 ret = sys_quotactl(cmd, special, id, addr);
 535         }
 536         return ret;
 537 }
 538 #endif
 539
 540
 541 #ifdef CONFIG_QUOTA_NETLINK_INTERFACE
 542
 543 /* Netlink family structure for quota */
 544 static struct genl_family quota_genl_family = {
 545         .id = GENL_ID_GENERATE,
 546         .hdrsize = 0,
 547         .name = "VFS_DQUOT",
 548         .version = 1,
 549         .maxattr = QUOTA_NL_A_MAX,
 550 };
 551
 552 /**
 553  * quota_send_warning - Send warning to userspace about exceeded quota
 554  * @type: The quota type: USRQQUOTA, GRPQUOTA,...
 555  * @id: The user or group id of the quota that was exceeded
 556  * @dev: The device on which the fs is mounted (sb->s_dev)
 557  * @warntype: The type of the warning: QUOTA_NL_...
 558  *
 559  * This can be used by filesystems (including those which don't use
 560  * dquot) to send a message to userspace relating to quota limits.
 561  *
 562  */
 563
 564 void quota_send_warning(short type, unsigned int id, dev_t dev,
 565                         const char warntype)
 566 {
 567         static atomic_t seq;
 568         struct sk_buff *skb;
 569         void *msg_head;
 570         int ret;
 571         int msg_size = 4 * nla_total_size(sizeof(u32)) +
 572                        2 * nla_total_size(sizeof(u64));
 573
 574         /* We have to allocate using GFP_NOFS as we are called from a
 575          * filesystem performing write and thus further recursion into
 576          * the fs to free some data could cause deadlocks. */
 577         skb = genlmsg_new(msg_size, GFP_NOFS);
 578         if (!skb) {
 579                 printk(KERN_ERR
 580                   "VFS: Not enough memory to send quota warning.\n");
 581                 return;
 582         }
 583         msg_head = genlmsg_put(skb, 0, atomic_add_return(1, &seq),
 584                         &quota_genl_family, 0, QUOTA_NL_C_WARNING);
 585         if (!msg_head) {
 586                 printk(KERN_ERR
 587                   "VFS: Cannot store netlink header in quota warning.\n");
 588                 goto err_out;
 589         }
 590         ret = nla_put_u32(skb, QUOTA_NL_A_QTYPE, type);
 591         if (ret)
 592                 goto attr_err_out;
 593         ret = nla_put_u64(skb, QUOTA_NL_A_EXCESS_ID, id);
 594         if (ret)
 595                 goto attr_err_out;
 596         ret = nla_put_u32(skb, QUOTA_NL_A_WARNING, warntype);
 597         if (ret)
 598                 goto attr_err_out;
 599         ret = nla_put_u32(skb, QUOTA_NL_A_DEV_MAJOR, MAJOR(dev));
 600         if (ret)
 601                 goto attr_err_out;
 602         ret = nla_put_u32(skb, QUOTA_NL_A_DEV_MINOR, MINOR(dev));
 603         if (ret)
 604                 goto attr_err_out;
 605         ret = nla_put_u64(skb, QUOTA_NL_A_CAUSED_ID, current_uid());
 606         if (ret)
 607                 goto attr_err_out;
 608         genlmsg_end(skb, msg_head);
 609
 610         genlmsg_multicast(skb, 0, quota_genl_family.id, GFP_NOFS);
 611         return;
 612 attr_err_out:
 613         printk(KERN_ERR "VFS: Not enough space to compose quota message!\n");
 614 err_out:
 615         kfree_skb(skb);
 616 }
 617 EXPORT_SYMBOL(quota_send_warning);
 618
 619 static int __init quota_init(void)
 620 {
 621         if (genl_register_family(&quota_genl_family) != 0)
 622                 printk(KERN_ERR
 623                        "VFS: Failed to create quota netlink interface.\n");
 624         return 0;
 625 };
 626
 627 module_init(quota_init);
 628 #endif
 629