fs/ufs/super.c

   1 /*
   2  *  linux/fs/ufs/super.c
   3  *
   4  * Copyright (C) 1998
   5  * Daniel Pirkl <daniel.pirkl@email.cz>
   6  * Charles University, Faculty of Mathematics and Physics
   7  */
   8
   9 /* Derived from
  10  *
  11  *  linux/fs/ext2/super.c
  12  *
  13  * Copyright (C) 1992, 1993, 1994, 1995
  14  * Remy Card (card@masi.ibp.fr)
  15  * Laboratoire MASI - Institut Blaise Pascal
  16  * Universite Pierre et Marie Curie (Paris VI)
  17  *
  18  *  from
  19  *
  20  *  linux/fs/minix/inode.c
  21  *
  22  *  Copyright (C) 1991, 1992  Linus Torvalds
  23  *
  24  *  Big-endian to little-endian byte-swapping/bitmaps by
  25  *        David S. Miller (davem@caip.rutgers.edu), 1995
  26  */
  27
  28 /*
  29  * Inspired by
  30  *
  31  *  linux/fs/ufs/super.c
  32  *
  33  * Copyright (C) 1996
  34  * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
  35  * Laboratory for Computer Science Research Computing Facility
  36  * Rutgers, The State University of New Jersey
  37  *
  38  * Copyright (C) 1996  Eddie C. Dost  (ecd@skynet.be)
  39  *
  40  * Kernel module support added on 96/04/26 by
  41  * Stefan Reinauer <stepan@home.culture.mipt.ru>
  42  *
  43  * Module usage counts added on 96/04/29 by
  44  * Gertjan van Wingerde <gwingerde@gmail.com>
  45  *
  46  * Clean swab support on 19970406 by
  47  * Francois-Rene Rideau <fare@tunes.org>
  48  *
  49  * 4.4BSD (FreeBSD) support added on February 1st 1998 by
  50  * Niels Kristian Bech Jensen <nkbj@image.dk> partially based
  51  * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>.
  52  *
  53  * NeXTstep support added on February 5th 1998 by
  54  * Niels Kristian Bech Jensen <nkbj@image.dk>.
  55  *
  56  * write support Daniel Pirkl <daniel.pirkl@email.cz> 1998
  57  *
  58  * HP/UX hfs filesystem support added by
  59  * Martin K. Petersen <mkp@mkp.net>, August 1999
  60  *
  61  * UFS2 (of FreeBSD 5.x) support added by
  62  * Niraj Kumar <niraj17@iitbombay.org>, Jan 2004
  63  *
  64  * UFS2 write support added by
  65  * Evgeniy Dushistov <dushistov@mail.ru>, 2007
  66  */
  67
  68
  69 #include <linux/exportfs.h>
  70 #include <linux/module.h>
  71 #include <linux/bitops.h>
  72
  73 #include <stdarg.h>
  74
  75 #include <asm/uaccess.h>
  76
  77 #include <linux/errno.h>
  78 #include <linux/fs.h>
  79 #include <linux/slab.h>
  80 #include <linux/time.h>
  81 #include <linux/stat.h>
  82 #include <linux/string.h>
  83 #include <linux/blkdev.h>
  84 #include <linux/init.h>
  85 #include <linux/parser.h>
  86 #include <linux/buffer_head.h>
  87 #include <linux/vfs.h>
  88 #include <linux/log2.h>
  89 #include <linux/mount.h>
  90 #include <linux/seq_file.h>
  91
  92 #include "ufs_fs.h"
  93 #include "ufs.h"
  94 #include "swab.h"
  95 #include "util.h"
  96
  97 void lock_ufs(struct super_block *sb)
  98 {
  99 #if defined(CONFIG_SMP) || defined (CONFIG_PREEMPT)
 100         struct ufs_sb_info *sbi = UFS_SB(sb);
 101
 102         mutex_lock(&sbi->mutex);
 103         sbi->mutex_owner = current;
 104 #endif
 105 }
 106
 107 void unlock_ufs(struct super_block *sb)
 108 {
 109 #if defined(CONFIG_SMP) || defined (CONFIG_PREEMPT)
 110         struct ufs_sb_info *sbi = UFS_SB(sb);
 111
 112         sbi->mutex_owner = NULL;
 113         mutex_unlock(&sbi->mutex);
 114 #endif
 115 }
 116
 117 static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation)
 118 {
 119         struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
 120         struct inode *inode;
 121
 122         if (ino < UFS_ROOTINO || ino > uspi->s_ncg * uspi->s_ipg)
 123                 return ERR_PTR(-ESTALE);
 124
 125         inode = ufs_iget(sb, ino);
 126         if (IS_ERR(inode))
 127                 return ERR_CAST(inode);
 128         if (generation && inode->i_generation != generation) {
 129                 iput(inode);
 130                 return ERR_PTR(-ESTALE);
 131         }
 132         return inode;
 133 }
 134
 135 static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid,
 136                                        int fh_len, int fh_type)
 137 {
 138         return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
 139 }
 140
 141 static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid,
 142                                        int fh_len, int fh_type)
 143 {
 144         return generic_fh_to_parent(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
 145 }
 146
 147 static struct dentry *ufs_get_parent(struct dentry *child)
 148 {
 149         struct qstr dot_dot = QSTR_INIT("..", 2);
 150         ino_t ino;
 151
 152         ino = ufs_inode_by_name(child->d_inode, &dot_dot);
 153         if (!ino)
 154                 return ERR_PTR(-ENOENT);
 155         return d_obtain_alias(ufs_iget(child->d_inode->i_sb, ino));
 156 }
 157
 158 static const struct export_operations ufs_export_ops = {
 159         .fh_to_dentry   = ufs_fh_to_dentry,
 160         .fh_to_parent   = ufs_fh_to_parent,
 161         .get_parent     = ufs_get_parent,
 162 };
 163
 164 #ifdef CONFIG_UFS_DEBUG
 165 /*
 166  * Print contents of ufs_super_block, useful for debugging
 167  */
 168 static void ufs_print_super_stuff(struct super_block *sb,
 169                                   struct ufs_super_block_first *usb1,
 170                                   struct ufs_super_block_second *usb2,
 171                                   struct ufs_super_block_third *usb3)
 172 {
 173         u32 magic = fs32_to_cpu(sb, usb3->fs_magic);
 174
 175         printk("ufs_print_super_stuff\n");
 176         printk("  magic:     0x%x\n", magic);
 177         if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) {
 178                 printk("  fs_size:   %llu\n", (unsigned long long)
 179                        fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
 180                 printk("  fs_dsize:  %llu\n", (unsigned long long)
 181                        fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize));
 182                 printk("  bsize:         %u\n",
 183                        fs32_to_cpu(sb, usb1->fs_bsize));
 184                 printk("  fsize:         %u\n",
 185                        fs32_to_cpu(sb, usb1->fs_fsize));
 186                 printk("  fs_volname:  %s\n", usb2->fs_un.fs_u2.fs_volname);
 187                 printk("  fs_sblockloc: %llu\n", (unsigned long long)
 188                        fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc));
 189                 printk("  cs_ndir(No of dirs):  %llu\n", (unsigned long long)
 190                        fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir));
 191                 printk("  cs_nbfree(No of free blocks):  %llu\n",
 192                        (unsigned long long)
 193                        fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
 194                 printk(KERN_INFO"  cs_nifree(Num of free inodes): %llu\n",
 195                        (unsigned long long)
 196                        fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree));
 197                 printk(KERN_INFO"  cs_nffree(Num of free frags): %llu\n",
 198                        (unsigned long long)
 199                        fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree));
 200                 printk(KERN_INFO"  fs_maxsymlinklen: %u\n",
 201                        fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen));
 202         } else {
 203                 printk(" sblkno:      %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
 204                 printk(" cblkno:      %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
 205                 printk(" iblkno:      %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
 206                 printk(" dblkno:      %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
 207                 printk(" cgoffset:    %u\n",
 208                        fs32_to_cpu(sb, usb1->fs_cgoffset));
 209                 printk(" ~cgmask:     0x%x\n",
 210                        ~fs32_to_cpu(sb, usb1->fs_cgmask));
 211                 printk(" size:        %u\n", fs32_to_cpu(sb, usb1->fs_size));
 212                 printk(" dsize:       %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
 213                 printk(" ncg:         %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
 214                 printk(" bsize:       %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
 215                 printk(" fsize:       %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
 216                 printk(" frag:        %u\n", fs32_to_cpu(sb, usb1->fs_frag));
 217                 printk(" fragshift:   %u\n",
 218                        fs32_to_cpu(sb, usb1->fs_fragshift));
 219                 printk(" ~fmask:      %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
 220                 printk(" fshift:      %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
 221                 printk(" sbsize:      %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
 222                 printk(" spc:         %u\n", fs32_to_cpu(sb, usb1->fs_spc));
 223                 printk(" cpg:         %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
 224                 printk(" ipg:         %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
 225                 printk(" fpg:         %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
 226                 printk(" csaddr:      %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
 227                 printk(" cssize:      %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
 228                 printk(" cgsize:      %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
 229                 printk(" fstodb:      %u\n",
 230                        fs32_to_cpu(sb, usb1->fs_fsbtodb));
 231                 printk(" nrpos:       %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
 232                 printk(" ndir         %u\n",
 233                        fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
 234                 printk(" nifree       %u\n",
 235                        fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
 236                 printk(" nbfree       %u\n",
 237                        fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
 238                 printk(" nffree       %u\n",
 239                        fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
 240         }
 241         printk("\n");
 242 }
 243
 244 /*
 245  * Print contents of ufs_cylinder_group, useful for debugging
 246  */
 247 static void ufs_print_cylinder_stuff(struct super_block *sb,
 248                                      struct ufs_cylinder_group *cg)
 249 {
 250         printk("\nufs_print_cylinder_stuff\n");
 251         printk("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group));
 252         printk("  magic:        %x\n", fs32_to_cpu(sb, cg->cg_magic));
 253         printk("  time:         %u\n", fs32_to_cpu(sb, cg->cg_time));
 254         printk("  cgx:          %u\n", fs32_to_cpu(sb, cg->cg_cgx));
 255         printk("  ncyl:         %u\n", fs16_to_cpu(sb, cg->cg_ncyl));
 256         printk("  niblk:        %u\n", fs16_to_cpu(sb, cg->cg_niblk));
 257         printk("  ndblk:        %u\n", fs32_to_cpu(sb, cg->cg_ndblk));
 258         printk("  cs_ndir:      %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir));
 259         printk("  cs_nbfree:    %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree));
 260         printk("  cs_nifree:    %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree));
 261         printk("  cs_nffree:    %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree));
 262         printk("  rotor:        %u\n", fs32_to_cpu(sb, cg->cg_rotor));
 263         printk("  frotor:       %u\n", fs32_to_cpu(sb, cg->cg_frotor));
 264         printk("  irotor:       %u\n", fs32_to_cpu(sb, cg->cg_irotor));
 265         printk("  frsum:        %u, %u, %u, %u, %u, %u, %u, %u\n",
 266             fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]),
 267             fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]),
 268             fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]),
 269             fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7]));
 270         printk("  btotoff:      %u\n", fs32_to_cpu(sb, cg->cg_btotoff));
 271         printk("  boff:         %u\n", fs32_to_cpu(sb, cg->cg_boff));
 272         printk("  iuseoff:      %u\n", fs32_to_cpu(sb, cg->cg_iusedoff));
 273         printk("  freeoff:      %u\n", fs32_to_cpu(sb, cg->cg_freeoff));
 274         printk("  nextfreeoff:  %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff));
 275         printk("  clustersumoff %u\n",
 276                fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff));
 277         printk("  clusteroff    %u\n",
 278                fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff));
 279         printk("  nclusterblks  %u\n",
 280                fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks));
 281         printk("\n");
 282 }
 283 #else
 284 #  define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/
 285 #  define ufs_print_cylinder_stuff(sb, cg) /**/
 286 #endif /* CONFIG_UFS_DEBUG */
 287
 288 static const struct super_operations ufs_super_ops;
 289
 290 static char error_buf[1024];
 291
 292 void ufs_error (struct super_block * sb, const char * function,
 293         const char * fmt, ...)
 294 {
 295         struct ufs_sb_private_info * uspi;
 296         struct ufs_super_block_first * usb1;
 297         va_list args;
 298
 299         uspi = UFS_SB(sb)->s_uspi;
 300         usb1 = ubh_get_usb_first(uspi);
 301
 302         if (!(sb->s_flags & MS_RDONLY)) {
 303                 usb1->fs_clean = UFS_FSBAD;
 304                 ubh_mark_buffer_dirty(USPI_UBH(uspi));
 305                 ufs_mark_sb_dirty(sb);
 306                 sb->s_flags |= MS_RDONLY;
 307         }
 308         va_start (args, fmt);
 309         vsnprintf (error_buf, sizeof(error_buf), fmt, args);
 310         va_end (args);
 311         switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) {
 312         case UFS_MOUNT_ONERROR_PANIC:
 313                 panic ("UFS-fs panic (device %s): %s: %s\n",
 314                         sb->s_id, function, error_buf);
 315
 316         case UFS_MOUNT_ONERROR_LOCK:
 317         case UFS_MOUNT_ONERROR_UMOUNT:
 318         case UFS_MOUNT_ONERROR_REPAIR:
 319                 printk (KERN_CRIT "UFS-fs error (device %s): %s: %s\n",
 320                         sb->s_id, function, error_buf);
 321         }
 322 }
 323
 324 void ufs_panic (struct super_block * sb, const char * function,
 325         const char * fmt, ...)
 326 {
 327         struct ufs_sb_private_info * uspi;
 328         struct ufs_super_block_first * usb1;
 329         va_list args;
 330
 331         uspi = UFS_SB(sb)->s_uspi;
 332         usb1 = ubh_get_usb_first(uspi);
 333
 334         if (!(sb->s_flags & MS_RDONLY)) {
 335                 usb1->fs_clean = UFS_FSBAD;
 336                 ubh_mark_buffer_dirty(USPI_UBH(uspi));
 337                 ufs_mark_sb_dirty(sb);
 338         }
 339         va_start (args, fmt);
 340         vsnprintf (error_buf, sizeof(error_buf), fmt, args);
 341         va_end (args);
 342         sb->s_flags |= MS_RDONLY;
 343         printk (KERN_CRIT "UFS-fs panic (device %s): %s: %s\n",
 344                 sb->s_id, function, error_buf);
 345 }
 346
 347 void ufs_warning (struct super_block * sb, const char * function,
 348         const char * fmt, ...)
 349 {
 350         va_list args;
 351
 352         va_start (args, fmt);
 353         vsnprintf (error_buf, sizeof(error_buf), fmt, args);
 354         va_end (args);
 355         printk (KERN_WARNING "UFS-fs warning (device %s): %s: %s\n",
 356                 sb->s_id, function, error_buf);
 357 }
 358
 359 enum {
 360        Opt_type_old = UFS_MOUNT_UFSTYPE_OLD,
 361        Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86,
 362        Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN,
 363        Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS,
 364        Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD,
 365        Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2,
 366        Opt_type_hp = UFS_MOUNT_UFSTYPE_HP,
 367        Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD,
 368        Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP,
 369        Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP,
 370        Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC,
 371        Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK,
 372        Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT,
 373        Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR,
 374        Opt_err
 375 };
 376
 377 static const match_table_t tokens = {
 378         {Opt_type_old, "ufstype=old"},
 379         {Opt_type_sunx86, "ufstype=sunx86"},
 380         {Opt_type_sun, "ufstype=sun"},
 381         {Opt_type_sunos, "ufstype=sunos"},
 382         {Opt_type_44bsd, "ufstype=44bsd"},
 383         {Opt_type_ufs2, "ufstype=ufs2"},
 384         {Opt_type_ufs2, "ufstype=5xbsd"},
 385         {Opt_type_hp, "ufstype=hp"},
 386         {Opt_type_nextstepcd, "ufstype=nextstep-cd"},
 387         {Opt_type_nextstep, "ufstype=nextstep"},
 388         {Opt_type_openstep, "ufstype=openstep"},
 389 /*end of possible ufs types */
 390         {Opt_onerror_panic, "onerror=panic"},
 391         {Opt_onerror_lock, "onerror=lock"},
 392         {Opt_onerror_umount, "onerror=umount"},
 393         {Opt_onerror_repair, "onerror=repair"},
 394         {Opt_err, NULL}
 395 };
 396
 397 static int ufs_parse_options (char * options, unsigned * mount_options)
 398 {
 399         char * p;
 400
 401         UFSD("ENTER\n");
 402
 403         if (!options)
 404                 return 1;
 405
 406         while ((p = strsep(&options, ",")) != NULL) {
 407                 substring_t args[MAX_OPT_ARGS];
 408                 int token;
 409                 if (!*p)
 410                         continue;
 411
 412                 token = match_token(p, tokens, args);
 413                 switch (token) {
 414                 case Opt_type_old:
 415                         ufs_clear_opt (*mount_options, UFSTYPE);
 416                         ufs_set_opt (*mount_options, UFSTYPE_OLD);
 417                         break;
 418                 case Opt_type_sunx86:
 419                         ufs_clear_opt (*mount_options, UFSTYPE);
 420                         ufs_set_opt (*mount_options, UFSTYPE_SUNx86);
 421                         break;
 422                 case Opt_type_sun:
 423                         ufs_clear_opt (*mount_options, UFSTYPE);
 424                         ufs_set_opt (*mount_options, UFSTYPE_SUN);
 425                         break;
 426                 case Opt_type_sunos:
 427                         ufs_clear_opt(*mount_options, UFSTYPE);
 428                         ufs_set_opt(*mount_options, UFSTYPE_SUNOS);
 429                         break;
 430                 case Opt_type_44bsd:
 431                         ufs_clear_opt (*mount_options, UFSTYPE);
 432                         ufs_set_opt (*mount_options, UFSTYPE_44BSD);
 433                         break;
 434                 case Opt_type_ufs2:
 435                         ufs_clear_opt(*mount_options, UFSTYPE);
 436                         ufs_set_opt(*mount_options, UFSTYPE_UFS2);
 437                         break;
 438                 case Opt_type_hp:
 439                         ufs_clear_opt (*mount_options, UFSTYPE);
 440                         ufs_set_opt (*mount_options, UFSTYPE_HP);
 441                         break;
 442                 case Opt_type_nextstepcd:
 443                         ufs_clear_opt (*mount_options, UFSTYPE);
 444                         ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD);
 445                         break;
 446                 case Opt_type_nextstep:
 447                         ufs_clear_opt (*mount_options, UFSTYPE);
 448                         ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP);
 449                         break;
 450                 case Opt_type_openstep:
 451                         ufs_clear_opt (*mount_options, UFSTYPE);
 452                         ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP);
 453                         break;
 454                 case Opt_onerror_panic:
 455                         ufs_clear_opt (*mount_options, ONERROR);
 456                         ufs_set_opt (*mount_options, ONERROR_PANIC);
 457                         break;
 458                 case Opt_onerror_lock:
 459                         ufs_clear_opt (*mount_options, ONERROR);
 460                         ufs_set_opt (*mount_options, ONERROR_LOCK);
 461                         break;
 462                 case Opt_onerror_umount:
 463                         ufs_clear_opt (*mount_options, ONERROR);
 464                         ufs_set_opt (*mount_options, ONERROR_UMOUNT);
 465                         break;
 466                 case Opt_onerror_repair:
 467                         printk("UFS-fs: Unable to do repair on error, "
 468                                 "will lock lock instead\n");
 469                         ufs_clear_opt (*mount_options, ONERROR);
 470                         ufs_set_opt (*mount_options, ONERROR_REPAIR);
 471                         break;
 472                 default:
 473                         printk("UFS-fs: Invalid option: \"%s\" "
 474                                         "or missing value\n", p);
 475                         return 0;
 476                 }
 477         }
 478         return 1;
 479 }
 480
 481 /*
 482  * Different types of UFS hold fs_cstotal in different
 483  * places, and use different data structure for it.
 484  * To make things simpler we just copy fs_cstotal to ufs_sb_private_info
 485  */
 486 static void ufs_setup_cstotal(struct super_block *sb)
 487 {
 488         struct ufs_sb_info *sbi = UFS_SB(sb);
 489         struct ufs_sb_private_info *uspi = sbi->s_uspi;
 490         struct ufs_super_block_first *usb1;
 491         struct ufs_super_block_second *usb2;
 492         struct ufs_super_block_third *usb3;
 493         unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
 494
 495         UFSD("ENTER, mtype=%u\n", mtype);
 496         usb1 = ubh_get_usb_first(uspi);
 497         usb2 = ubh_get_usb_second(uspi);
 498         usb3 = ubh_get_usb_third(uspi);
 499
 500         if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
 501              (usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
 502             mtype == UFS_MOUNT_UFSTYPE_UFS2) {
 503                 /*we have statistic in different place, then usual*/
 504                 uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir);
 505                 uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree);
 506                 uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree);
 507                 uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree);
 508         } else {
 509                 uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir);
 510                 uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree);
 511                 uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
 512                 uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
 513         }
 514         UFSD("EXIT\n");
 515 }
 516
 517 /*
 518  * Read on-disk structures associated with cylinder groups
 519  */
 520 static int ufs_read_cylinder_structures(struct super_block *sb)
 521 {
 522         struct ufs_sb_info *sbi = UFS_SB(sb);
 523         struct ufs_sb_private_info *uspi = sbi->s_uspi;
 524         struct ufs_buffer_head * ubh;
 525         unsigned char * base, * space;
 526         unsigned size, blks, i;
 527         struct ufs_super_block_third *usb3;
 528
 529         UFSD("ENTER\n");
 530
 531         usb3 = ubh_get_usb_third(uspi);
 532         /*
 533          * Read cs structures from (usually) first data block
 534          * on the device.
 535          */
 536         size = uspi->s_cssize;
 537         blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
 538         base = space = kmalloc(size, GFP_NOFS);
 539         if (!base)
 540                 goto failed;
 541         sbi->s_csp = (struct ufs_csum *)space;
 542         for (i = 0; i < blks; i += uspi->s_fpb) {
 543                 size = uspi->s_bsize;
 544                 if (i + uspi->s_fpb > blks)
 545                         size = (blks - i) * uspi->s_fsize;
 546
 547                 ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
 548
 549                 if (!ubh)
 550                         goto failed;
 551
 552                 ubh_ubhcpymem (space, ubh, size);
 553
 554                 space += size;
 555                 ubh_brelse (ubh);
 556                 ubh = NULL;
 557         }
 558
 559         /*
 560          * Read cylinder group (we read only first fragment from block
 561          * at this time) and prepare internal data structures for cg caching.
 562          */
 563         if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_NOFS)))
 564                 goto failed;
 565         for (i = 0; i < uspi->s_ncg; i++)
 566                 sbi->s_ucg[i] = NULL;
 567         for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
 568                 sbi->s_ucpi[i] = NULL;
 569                 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
 570         }
 571         for (i = 0; i < uspi->s_ncg; i++) {
 572                 UFSD("read cg %u\n", i);
 573                 if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i))))
 574                         goto failed;
 575                 if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data))
 576                         goto failed;
 577
 578                 ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data);
 579         }
 580         for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
 581                 if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS)))
 582                         goto failed;
 583                 sbi->s_cgno[i] = UFS_CGNO_EMPTY;
 584         }
 585         sbi->s_cg_loaded = 0;
 586         UFSD("EXIT\n");
 587         return 1;
 588
 589 failed:
 590         kfree (base);
 591         if (sbi->s_ucg) {
 592                 for (i = 0; i < uspi->s_ncg; i++)
 593                         if (sbi->s_ucg[i])
 594                                 brelse (sbi->s_ucg[i]);
 595                 kfree (sbi->s_ucg);
 596                 for (i = 0; i < UFS_MAX_GROUP_LOADED; i++)
 597                         kfree (sbi->s_ucpi[i]);
 598         }
 599         UFSD("EXIT (FAILED)\n");
 600         return 0;
 601 }
 602
 603 /*
 604  * Sync our internal copy of fs_cstotal with disk
 605  */
 606 static void ufs_put_cstotal(struct super_block *sb)
 607 {
 608         unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
 609         struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
 610         struct ufs_super_block_first *usb1;
 611         struct ufs_super_block_second *usb2;
 612         struct ufs_super_block_third *usb3;
 613
 614         UFSD("ENTER\n");
 615         usb1 = ubh_get_usb_first(uspi);
 616         usb2 = ubh_get_usb_second(uspi);
 617         usb3 = ubh_get_usb_third(uspi);
 618
 619         if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
 620              (usb1->fs_flags & UFS_FLAGS_UPDATED)) ||
 621             mtype == UFS_MOUNT_UFSTYPE_UFS2) {
 622                 /*we have statistic in different place, then usual*/
 623                 usb2->fs_un.fs_u2.cs_ndir =
 624                         cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
 625                 usb2->fs_un.fs_u2.cs_nbfree =
 626                         cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
 627                 usb3->fs_un1.fs_u2.cs_nifree =
 628                         cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
 629                 usb3->fs_un1.fs_u2.cs_nffree =
 630                         cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
 631         } else {
 632                 usb1->fs_cstotal.cs_ndir =
 633                         cpu_to_fs32(sb, uspi->cs_total.cs_ndir);
 634                 usb1->fs_cstotal.cs_nbfree =
 635                         cpu_to_fs32(sb, uspi->cs_total.cs_nbfree);
 636                 usb1->fs_cstotal.cs_nifree =
 637                         cpu_to_fs32(sb, uspi->cs_total.cs_nifree);
 638                 usb1->fs_cstotal.cs_nffree =
 639                         cpu_to_fs32(sb, uspi->cs_total.cs_nffree);
 640         }
 641         ubh_mark_buffer_dirty(USPI_UBH(uspi));
 642         ufs_print_super_stuff(sb, usb1, usb2, usb3);
 643         UFSD("EXIT\n");
 644 }
 645
 646 /**
 647  * ufs_put_super_internal() - put on-disk intrenal structures
 648  * @sb: pointer to super_block structure
 649  * Put on-disk structures associated with cylinder groups
 650  * and write them back to disk, also update cs_total on disk
 651  */
 652 static void ufs_put_super_internal(struct super_block *sb)
 653 {
 654         struct ufs_sb_info *sbi = UFS_SB(sb);
 655         struct ufs_sb_private_info *uspi = sbi->s_uspi;
 656         struct ufs_buffer_head * ubh;
 657         unsigned char * base, * space;
 658         unsigned blks, size, i;
 659
 660
 661         UFSD("ENTER\n");
 662
 663         ufs_put_cstotal(sb);
 664         size = uspi->s_cssize;
 665         blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
 666         base = space = (char*) sbi->s_csp;
 667         for (i = 0; i < blks; i += uspi->s_fpb) {
 668                 size = uspi->s_bsize;
 669                 if (i + uspi->s_fpb > blks)
 670                         size = (blks - i) * uspi->s_fsize;
 671
 672                 ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
 673
 674                 ubh_memcpyubh (ubh, space, size);
 675                 space += size;
 676                 ubh_mark_buffer_uptodate (ubh, 1);
 677                 ubh_mark_buffer_dirty (ubh);
 678                 ubh_brelse (ubh);
 679         }
 680         for (i = 0; i < sbi->s_cg_loaded; i++) {
 681                 ufs_put_cylinder (sb, i);
 682                 kfree (sbi->s_ucpi[i]);
 683         }
 684         for (; i < UFS_MAX_GROUP_LOADED; i++)
 685                 kfree (sbi->s_ucpi[i]);
 686         for (i = 0; i < uspi->s_ncg; i++)
 687                 brelse (sbi->s_ucg[i]);
 688         kfree (sbi->s_ucg);
 689         kfree (base);
 690
 691         UFSD("EXIT\n");
 692 }
 693
 694 static int ufs_sync_fs(struct super_block *sb, int wait)
 695 {
 696         struct ufs_sb_private_info * uspi;
 697         struct ufs_super_block_first * usb1;
 698         struct ufs_super_block_third * usb3;
 699         unsigned flags;
 700
 701         lock_ufs(sb);
 702         lock_super(sb);
 703
 704         UFSD("ENTER\n");
 705
 706         flags = UFS_SB(sb)->s_flags;
 707         uspi = UFS_SB(sb)->s_uspi;
 708         usb1 = ubh_get_usb_first(uspi);
 709         usb3 = ubh_get_usb_third(uspi);
 710
 711         usb1->fs_time = cpu_to_fs32(sb, get_seconds());
 712         if ((flags & UFS_ST_MASK) == UFS_ST_SUN  ||
 713             (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
 714             (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
 715                 ufs_set_fs_state(sb, usb1, usb3,
 716                                 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
 717         ufs_put_cstotal(sb);
 718
 719         UFSD("EXIT\n");
 720         unlock_super(sb);
 721         unlock_ufs(sb);
 722
 723         return 0;
 724 }
 725
 726 static void delayed_sync_fs(struct work_struct *work)
 727 {
 728         struct ufs_sb_info *sbi;
 729
 730         sbi = container_of(work, struct ufs_sb_info, sync_work.work);
 731
 732         spin_lock(&sbi->work_lock);
 733         sbi->work_queued = 0;
 734         spin_unlock(&sbi->work_lock);
 735
 736         ufs_sync_fs(sbi->sb, 1);
 737 }
 738
 739 void ufs_mark_sb_dirty(struct super_block *sb)
 740 {
 741         struct ufs_sb_info *sbi = UFS_SB(sb);
 742         unsigned long delay;
 743
 744         spin_lock(&sbi->work_lock);
 745         if (!sbi->work_queued) {
 746                 delay = msecs_to_jiffies(dirty_writeback_interval * 10);
 747                 queue_delayed_work(system_long_wq, &sbi->sync_work, delay);
 748                 sbi->work_queued = 1;
 749         }
 750         spin_unlock(&sbi->work_lock);
 751 }
 752
 753 static void ufs_put_super(struct super_block *sb)
 754 {
 755         struct ufs_sb_info * sbi = UFS_SB(sb);
 756
 757         UFSD("ENTER\n");
 758
 759         if (!(sb->s_flags & MS_RDONLY))
 760                 ufs_put_super_internal(sb);
 761         cancel_delayed_work_sync(&sbi->sync_work);
 762
 763         ubh_brelse_uspi (sbi->s_uspi);
 764         kfree (sbi->s_uspi);
 765         kfree (sbi);
 766         sb->s_fs_info = NULL;
 767         UFSD("EXIT\n");
 768         return;
 769 }
 770
 771 static int ufs_fill_super(struct super_block *sb, void *data, int silent)
 772 {
 773         struct ufs_sb_info * sbi;
 774         struct ufs_sb_private_info * uspi;
 775         struct ufs_super_block_first * usb1;
 776         struct ufs_super_block_second * usb2;
 777         struct ufs_super_block_third * usb3;
 778         struct ufs_buffer_head * ubh;
 779         struct inode *inode;
 780         unsigned block_size, super_block_size;
 781         unsigned flags;
 782         unsigned super_block_offset;
 783         unsigned maxsymlen;
 784         int ret = -EINVAL;
 785
 786         uspi = NULL;
 787         ubh = NULL;
 788         flags = 0;
 789
 790         UFSD("ENTER\n");
 791
 792         sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL);
 793         if (!sbi)
 794                 goto failed_nomem;
 795         sb->s_fs_info = sbi;
 796         sbi->sb = sb;
 797
 798         UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY));
 799
 800 #ifndef CONFIG_UFS_FS_WRITE
 801         if (!(sb->s_flags & MS_RDONLY)) {
 802                 printk("ufs was compiled with read-only support, "
 803                 "can't be mounted as read-write\n");
 804                 goto failed;
 805         }
 806 #endif
 807         mutex_init(&sbi->mutex);
 808         spin_lock_init(&sbi->work_lock);
 809         INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
 810         /*
 811          * Set default mount options
 812          * Parse mount options
 813          */
 814         sbi->s_mount_opt = 0;
 815         ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK);
 816         if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) {
 817                 printk("wrong mount options\n");
 818                 goto failed;
 819         }
 820         if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) {
 821                 if (!silent)
 822                         printk("You didn't specify the type of your ufs filesystem\n\n"
 823                         "mount -t ufs -o ufstype="
 824                         "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n"
 825                         ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, "
 826                         "default is ufstype=old\n");
 827                 ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD);
 828         }
 829
 830         uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL);
 831         sbi->s_uspi = uspi;
 832         if (!uspi)
 833                 goto failed;
 834         uspi->s_dirblksize = UFS_SECTOR_SIZE;
 835         super_block_offset=UFS_SBLOCK;
 836
 837         /* Keep 2Gig file limit. Some UFS variants need to override
 838            this but as I don't know which I'll let those in the know loosen
 839            the rules */
 840         switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) {
 841         case UFS_MOUNT_UFSTYPE_44BSD:
 842                 UFSD("ufstype=44bsd\n");
 843                 uspi->s_fsize = block_size = 512;
 844                 uspi->s_fmask = ~(512 - 1);
 845                 uspi->s_fshift = 9;
 846                 uspi->s_sbsize = super_block_size = 1536;
 847                 uspi->s_sbbase = 0;
 848                 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
 849                 break;
 850         case UFS_MOUNT_UFSTYPE_UFS2:
 851                 UFSD("ufstype=ufs2\n");
 852                 super_block_offset=SBLOCK_UFS2;
 853                 uspi->s_fsize = block_size = 512;
 854                 uspi->s_fmask = ~(512 - 1);
 855                 uspi->s_fshift = 9;
 856                 uspi->s_sbsize = super_block_size = 1536;
 857                 uspi->s_sbbase =  0;
 858                 flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
 859                 break;
 860
 861         case UFS_MOUNT_UFSTYPE_SUN:
 862                 UFSD("ufstype=sun\n");
 863                 uspi->s_fsize = block_size = 1024;
 864                 uspi->s_fmask = ~(1024 - 1);
 865                 uspi->s_fshift = 10;
 866                 uspi->s_sbsize = super_block_size = 2048;
 867                 uspi->s_sbbase = 0;
 868                 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
 869                 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN;
 870                 break;
 871
 872         case UFS_MOUNT_UFSTYPE_SUNOS:
 873                 UFSD(("ufstype=sunos\n"))
 874                 uspi->s_fsize = block_size = 1024;
 875                 uspi->s_fmask = ~(1024 - 1);
 876                 uspi->s_fshift = 10;
 877                 uspi->s_sbsize = 2048;
 878                 super_block_size = 2048;
 879                 uspi->s_sbbase = 0;
 880                 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
 881                 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN;
 882                 break;
 883
 884         case UFS_MOUNT_UFSTYPE_SUNx86:
 885                 UFSD("ufstype=sunx86\n");
 886                 uspi->s_fsize = block_size = 1024;
 887                 uspi->s_fmask = ~(1024 - 1);
 888                 uspi->s_fshift = 10;
 889                 uspi->s_sbsize = super_block_size = 2048;
 890                 uspi->s_sbbase = 0;
 891                 uspi->s_maxsymlinklen = 0; /* Not supported on disk */
 892                 flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN;
 893                 break;
 894
 895         case UFS_MOUNT_UFSTYPE_OLD:
 896                 UFSD("ufstype=old\n");
 897                 uspi->s_fsize = block_size = 1024;
 898                 uspi->s_fmask = ~(1024 - 1);
 899                 uspi->s_fshift = 10;
 900                 uspi->s_sbsize = super_block_size = 2048;
 901                 uspi->s_sbbase = 0;
 902                 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
 903                 if (!(sb->s_flags & MS_RDONLY)) {
 904                         if (!silent)
 905                                 printk(KERN_INFO "ufstype=old is supported read-only\n");
 906                         sb->s_flags |= MS_RDONLY;
 907                 }
 908                 break;
 909
 910         case UFS_MOUNT_UFSTYPE_NEXTSTEP:
 911                 UFSD("ufstype=nextstep\n");
 912                 uspi->s_fsize = block_size = 1024;
 913                 uspi->s_fmask = ~(1024 - 1);
 914                 uspi->s_fshift = 10;
 915                 uspi->s_sbsize = super_block_size = 2048;
 916                 uspi->s_sbbase = 0;
 917                 uspi->s_dirblksize = 1024;
 918                 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
 919                 if (!(sb->s_flags & MS_RDONLY)) {
 920                         if (!silent)
 921                                 printk(KERN_INFO "ufstype=nextstep is supported read-only\n");
 922                         sb->s_flags |= MS_RDONLY;
 923                 }
 924                 break;
 925
 926         case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD:
 927                 UFSD("ufstype=nextstep-cd\n");
 928                 uspi->s_fsize = block_size = 2048;
 929                 uspi->s_fmask = ~(2048 - 1);
 930                 uspi->s_fshift = 11;
 931                 uspi->s_sbsize = super_block_size = 2048;
 932                 uspi->s_sbbase = 0;
 933                 uspi->s_dirblksize = 1024;
 934                 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
 935                 if (!(sb->s_flags & MS_RDONLY)) {
 936                         if (!silent)
 937                                 printk(KERN_INFO "ufstype=nextstep-cd is supported read-only\n");
 938                         sb->s_flags |= MS_RDONLY;
 939                 }
 940                 break;
 941
 942         case UFS_MOUNT_UFSTYPE_OPENSTEP:
 943                 UFSD("ufstype=openstep\n");
 944                 uspi->s_fsize = block_size = 1024;
 945                 uspi->s_fmask = ~(1024 - 1);
 946                 uspi->s_fshift = 10;
 947                 uspi->s_sbsize = super_block_size = 2048;
 948                 uspi->s_sbbase = 0;
 949                 uspi->s_dirblksize = 1024;
 950                 flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
 951                 if (!(sb->s_flags & MS_RDONLY)) {
 952                         if (!silent)
 953                                 printk(KERN_INFO "ufstype=openstep is supported read-only\n");
 954                         sb->s_flags |= MS_RDONLY;
 955                 }
 956                 break;
 957
 958         case UFS_MOUNT_UFSTYPE_HP:
 959                 UFSD("ufstype=hp\n");
 960                 uspi->s_fsize = block_size = 1024;
 961                 uspi->s_fmask = ~(1024 - 1);
 962                 uspi->s_fshift = 10;
 963                 uspi->s_sbsize = super_block_size = 2048;
 964                 uspi->s_sbbase = 0;
 965                 flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
 966                 if (!(sb->s_flags & MS_RDONLY)) {
 967                         if (!silent)
 968                                 printk(KERN_INFO "ufstype=hp is supported read-only\n");
 969                         sb->s_flags |= MS_RDONLY;
 970                 }
 971                 break;
 972         default:
 973                 if (!silent)
 974                         printk("unknown ufstype\n");
 975                 goto failed;
 976         }
 977
 978 again:
 979         if (!sb_set_blocksize(sb, block_size)) {
 980                 printk(KERN_ERR "UFS: failed to set blocksize\n");
 981                 goto failed;
 982         }
 983
 984         /*
 985          * read ufs super block from device
 986          */
 987
 988         ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size);
 989
 990         if (!ubh)
 991             goto failed;
 992
 993         usb1 = ubh_get_usb_first(uspi);
 994         usb2 = ubh_get_usb_second(uspi);
 995         usb3 = ubh_get_usb_third(uspi);
 996
 997         /* Sort out mod used on SunOS 4.1.3 for fs_state */
 998         uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat);
 999         if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) &&
1000             (uspi->s_postblformat != UFS_42POSTBLFMT)) {
1001                 flags &= ~UFS_ST_MASK;
1002                 flags |=  UFS_ST_SUN;
1003         }
1004
1005         /*
1006          * Check ufs magic number
1007          */
1008         sbi->s_bytesex = BYTESEX_LE;
1009         switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
1010                 case UFS_MAGIC:
1011                 case UFS_MAGIC_BW:
1012                 case UFS2_MAGIC:
1013                 case UFS_MAGIC_LFN:
1014                 case UFS_MAGIC_FEA:
1015                 case UFS_MAGIC_4GB:
1016                         goto magic_found;
1017         }
1018         sbi->s_bytesex = BYTESEX_BE;
1019         switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
1020                 case UFS_MAGIC:
1021                 case UFS_MAGIC_BW:
1022                 case UFS2_MAGIC:
1023                 case UFS_MAGIC_LFN:
1024                 case UFS_MAGIC_FEA:
1025                 case UFS_MAGIC_4GB:
1026                         goto magic_found;
1027         }
1028
1029         if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP)
1030           || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD)
1031           || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP))
1032           && uspi->s_sbbase < 256) {
1033                 ubh_brelse_uspi(uspi);
1034                 ubh = NULL;
1035                 uspi->s_sbbase += 8;
1036                 goto again;
1037         }
1038         if (!silent)
1039                 printk("ufs_read_super: bad magic number\n");
1040         goto failed;
1041
1042 magic_found:
1043         /*
1044          * Check block and fragment sizes
1045          */
1046         uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize);
1047         uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize);
1048         uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize);
1049         uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1050         uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
1051
1052         if (!is_power_of_2(uspi->s_fsize)) {
1053                 printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n",
1054                         uspi->s_fsize);
1055                         goto failed;
1056         }
1057         if (uspi->s_fsize < 512) {
1058                 printk(KERN_ERR "ufs_read_super: fragment size %u is too small\n",
1059                         uspi->s_fsize);
1060                 goto failed;
1061         }
1062         if (uspi->s_fsize > 4096) {
1063                 printk(KERN_ERR "ufs_read_super: fragment size %u is too large\n",
1064                         uspi->s_fsize);
1065                 goto failed;
1066         }
1067         if (!is_power_of_2(uspi->s_bsize)) {
1068                 printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n",
1069                         uspi->s_bsize);
1070                 goto failed;
1071         }
1072         if (uspi->s_bsize < 4096) {
1073                 printk(KERN_ERR "ufs_read_super: block size %u is too small\n",
1074                         uspi->s_bsize);
1075                 goto failed;
1076         }
1077         if (uspi->s_bsize / uspi->s_fsize > 8) {
1078                 printk(KERN_ERR "ufs_read_super: too many fragments per block (%u)\n",
1079                         uspi->s_bsize / uspi->s_fsize);
1080                 goto failed;
1081         }
1082         if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) {
1083                 ubh_brelse_uspi(uspi);
1084                 ubh = NULL;
1085                 block_size = uspi->s_fsize;
1086                 super_block_size = uspi->s_sbsize;
1087                 UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size);
1088                 goto again;
1089         }
1090
1091         sbi->s_flags = flags;/*after that line some functions use s_flags*/
1092         ufs_print_super_stuff(sb, usb1, usb2, usb3);
1093
1094         /*
1095          * Check, if file system was correctly unmounted.
1096          * If not, make it read only.
1097          */
1098         if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) ||
1099           ((flags & UFS_ST_MASK) == UFS_ST_OLD) ||
1100           (((flags & UFS_ST_MASK) == UFS_ST_SUN ||
1101             (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
1102           (flags & UFS_ST_MASK) == UFS_ST_SUNx86) &&
1103           (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) {
1104                 switch(usb1->fs_clean) {
1105                 case UFS_FSCLEAN:
1106                         UFSD("fs is clean\n");
1107                         break;
1108                 case UFS_FSSTABLE:
1109                         UFSD("fs is stable\n");
1110                         break;
1111                 case UFS_FSLOG:
1112                         UFSD("fs is logging fs\n");
1113                         break;
1114                 case UFS_FSOSF1:
1115                         UFSD("fs is DEC OSF/1\n");
1116                         break;
1117                 case UFS_FSACTIVE:
1118                         printk("ufs_read_super: fs is active\n");
1119                         sb->s_flags |= MS_RDONLY;
1120                         break;
1121                 case UFS_FSBAD:
1122                         printk("ufs_read_super: fs is bad\n");
1123                         sb->s_flags |= MS_RDONLY;
1124                         break;
1125                 default:
1126                         printk("ufs_read_super: can't grok fs_clean 0x%x\n", usb1->fs_clean);
1127                         sb->s_flags |= MS_RDONLY;
1128                         break;
1129                 }
1130         } else {
1131                 printk("ufs_read_super: fs needs fsck\n");
1132                 sb->s_flags |= MS_RDONLY;
1133         }
1134
1135         /*
1136          * Read ufs_super_block into internal data structures
1137          */
1138         sb->s_op = &ufs_super_ops;
1139         sb->s_export_op = &ufs_export_ops;
1140
1141         sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic);
1142
1143         uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno);
1144         uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno);
1145         uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno);
1146         uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno);
1147         uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset);
1148         uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask);
1149
1150         if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
1151                 uspi->s_u2_size  = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size);
1152                 uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
1153         } else {
1154                 uspi->s_size  =  fs32_to_cpu(sb, usb1->fs_size);
1155                 uspi->s_dsize =  fs32_to_cpu(sb, usb1->fs_dsize);
1156         }
1157
1158         uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg);
1159         /* s_bsize already set */
1160         /* s_fsize already set */
1161         uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag);
1162         uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree);
1163         uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask);
1164         uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1165         uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift);
1166         uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
1167         UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift,
1168                 uspi->s_fshift);
1169         uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift);
1170         uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb);
1171         /* s_sbsize already set */
1172         uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask);
1173         uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift);
1174         uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir);
1175         uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb);
1176         uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf);
1177         uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3);
1178         uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave);
1179         uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew);
1180
1181         if (uspi->fs_magic == UFS2_MAGIC)
1182                 uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr);
1183         else
1184                 uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr);
1185
1186         uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize);
1187         uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize);
1188         uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak);
1189         uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect);
1190         uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc);
1191         uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg);
1192         uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg);
1193         uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc);
1194         uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize);
1195         uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3);
1196         uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3);
1197         uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos);
1198         uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff);
1199         uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff);
1200
1201         /*
1202          * Compute another frequently used values
1203          */
1204         uspi->s_fpbmask = uspi->s_fpb - 1;
1205         if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
1206                 uspi->s_apbshift = uspi->s_bshift - 3;
1207         else
1208                 uspi->s_apbshift = uspi->s_bshift - 2;
1209
1210         uspi->s_2apbshift = uspi->s_apbshift * 2;
1211         uspi->s_3apbshift = uspi->s_apbshift * 3;
1212         uspi->s_apb = 1 << uspi->s_apbshift;
1213         uspi->s_2apb = 1 << uspi->s_2apbshift;
1214         uspi->s_3apb = 1 << uspi->s_3apbshift;
1215         uspi->s_apbmask = uspi->s_apb - 1;
1216         uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS;
1217         uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift;
1218         uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift;
1219         uspi->s_bpf = uspi->s_fsize << 3;
1220         uspi->s_bpfshift = uspi->s_fshift + 3;
1221         uspi->s_bpfmask = uspi->s_bpf - 1;
1222         if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD ||
1223             (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2)
1224                 uspi->s_maxsymlinklen =
1225                     fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen);
1226
1227         if (uspi->fs_magic == UFS2_MAGIC)
1228                 maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR);
1229         else
1230                 maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR);
1231         if (uspi->s_maxsymlinklen > maxsymlen) {
1232                 ufs_warning(sb, __func__, "ufs_read_super: excessive maximum "
1233                             "fast symlink size (%u)\n", uspi->s_maxsymlinklen);
1234                 uspi->s_maxsymlinklen = maxsymlen;
1235         }
1236         sb->s_max_links = UFS_LINK_MAX;
1237
1238         inode = ufs_iget(sb, UFS_ROOTINO);
1239         if (IS_ERR(inode)) {
1240                 ret = PTR_ERR(inode);
1241                 goto failed;
1242         }
1243         sb->s_root = d_make_root(inode);
1244         if (!sb->s_root) {
1245                 ret = -ENOMEM;
1246                 goto failed;
1247         }
1248
1249         ufs_setup_cstotal(sb);
1250         /*
1251          * Read cylinder group structures
1252          */
1253         if (!(sb->s_flags & MS_RDONLY))
1254                 if (!ufs_read_cylinder_structures(sb))
1255                         goto failed;
1256
1257         UFSD("EXIT\n");
1258         return 0;
1259
1260 failed:
1261         if (ubh)
1262                 ubh_brelse_uspi (uspi);
1263         kfree (uspi);
1264         kfree(sbi);
1265         sb->s_fs_info = NULL;
1266         UFSD("EXIT (FAILED)\n");
1267         return ret;
1268
1269 failed_nomem:
1270         UFSD("EXIT (NOMEM)\n");
1271         return -ENOMEM;
1272 }
1273
1274 static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
1275 {
1276         struct ufs_sb_private_info * uspi;
1277         struct ufs_super_block_first * usb1;
1278         struct ufs_super_block_third * usb3;
1279         unsigned new_mount_opt, ufstype;
1280         unsigned flags;
1281
1282         lock_ufs(sb);
1283         lock_super(sb);
1284         uspi = UFS_SB(sb)->s_uspi;
1285         flags = UFS_SB(sb)->s_flags;
1286         usb1 = ubh_get_usb_first(uspi);
1287         usb3 = ubh_get_usb_third(uspi);
1288
1289         /*
1290          * Allow the "check" option to be passed as a remount option.
1291          * It is not possible to change ufstype option during remount
1292          */
1293         ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
1294         new_mount_opt = 0;
1295         ufs_set_opt (new_mount_opt, ONERROR_LOCK);
1296         if (!ufs_parse_options (data, &new_mount_opt)) {
1297                 unlock_super(sb);
1298                 unlock_ufs(sb);
1299                 return -EINVAL;
1300         }
1301         if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
1302                 new_mount_opt |= ufstype;
1303         } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
1304                 printk("ufstype can't be changed during remount\n");
1305                 unlock_super(sb);
1306                 unlock_ufs(sb);
1307                 return -EINVAL;
1308         }
1309
1310         if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
1311                 UFS_SB(sb)->s_mount_opt = new_mount_opt;
1312                 unlock_super(sb);
1313                 unlock_ufs(sb);
1314                 return 0;
1315         }
1316
1317         /*
1318          * fs was mouted as rw, remounting ro
1319          */
1320         if (*mount_flags & MS_RDONLY) {
1321                 ufs_put_super_internal(sb);
1322                 usb1->fs_time = cpu_to_fs32(sb, get_seconds());
1323                 if ((flags & UFS_ST_MASK) == UFS_ST_SUN
1324                   || (flags & UFS_ST_MASK) == UFS_ST_SUNOS
1325                   || (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
1326                         ufs_set_fs_state(sb, usb1, usb3,
1327                                 UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
1328                 ubh_mark_buffer_dirty (USPI_UBH(uspi));
1329                 sb->s_flags |= MS_RDONLY;
1330         } else {
1331         /*
1332          * fs was mounted as ro, remounting rw
1333          */
1334 #ifndef CONFIG_UFS_FS_WRITE
1335                 printk("ufs was compiled with read-only support, "
1336                 "can't be mounted as read-write\n");
1337                 unlock_super(sb);
1338                 unlock_ufs(sb);
1339                 return -EINVAL;
1340 #else
1341                 if (ufstype != UFS_MOUNT_UFSTYPE_SUN &&
1342                     ufstype != UFS_MOUNT_UFSTYPE_SUNOS &&
1343                     ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
1344                     ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
1345                     ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
1346                         printk("this ufstype is read-only supported\n");
1347                         unlock_super(sb);
1348                         unlock_ufs(sb);
1349                         return -EINVAL;
1350                 }
1351                 if (!ufs_read_cylinder_structures(sb)) {
1352                         printk("failed during remounting\n");
1353                         unlock_super(sb);
1354                         unlock_ufs(sb);
1355                         return -EPERM;
1356                 }
1357                 sb->s_flags &= ~MS_RDONLY;
1358 #endif
1359         }
1360         UFS_SB(sb)->s_mount_opt = new_mount_opt;
1361         unlock_super(sb);
1362         unlock_ufs(sb);
1363         return 0;
1364 }
1365
1366 static int ufs_show_options(struct seq_file *seq, struct dentry *root)
1367 {
1368         struct ufs_sb_info *sbi = UFS_SB(root->d_sb);
1369         unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
1370         const struct match_token *tp = tokens;
1371
1372         while (tp->token != Opt_onerror_panic && tp->token != mval)
1373                 ++tp;
1374         BUG_ON(tp->token == Opt_onerror_panic);
1375         seq_printf(seq, ",%s", tp->pattern);
1376
1377         mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR;
1378         while (tp->token != Opt_err && tp->token != mval)
1379                 ++tp;
1380         BUG_ON(tp->token == Opt_err);
1381         seq_printf(seq, ",%s", tp->pattern);
1382
1383         return 0;
1384 }
1385
1386 static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
1387 {
1388         struct super_block *sb = dentry->d_sb;
1389         struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi;
1390         unsigned  flags = UFS_SB(sb)->s_flags;
1391         struct ufs_super_block_first *usb1;
1392         struct ufs_super_block_second *usb2;
1393         struct ufs_super_block_third *usb3;
1394         u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1395
1396         lock_ufs(sb);
1397
1398         usb1 = ubh_get_usb_first(uspi);
1399         usb2 = ubh_get_usb_second(uspi);
1400         usb3 = ubh_get_usb_third(uspi);
1401
1402         if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
1403                 buf->f_type = UFS2_MAGIC;
1404                 buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
1405         } else {
1406                 buf->f_type = UFS_MAGIC;
1407                 buf->f_blocks = uspi->s_dsize;
1408         }
1409         buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) +
1410                 uspi->cs_total.cs_nffree;
1411         buf->f_ffree = uspi->cs_total.cs_nifree;
1412         buf->f_bsize = sb->s_blocksize;
1413         buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree))
1414                 ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0;
1415         buf->f_files = uspi->s_ncg * uspi->s_ipg;
1416         buf->f_namelen = UFS_MAXNAMLEN;
1417         buf->f_fsid.val[0] = (u32)id;
1418         buf->f_fsid.val[1] = (u32)(id >> 32);
1419
1420         unlock_ufs(sb);
1421
1422         return 0;
1423 }
1424
1425 static struct kmem_cache * ufs_inode_cachep;
1426
1427 static struct inode *ufs_alloc_inode(struct super_block *sb)
1428 {
1429         struct ufs_inode_info *ei;
1430         ei = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, GFP_NOFS);
1431         if (!ei)
1432                 return NULL;
1433         ei->vfs_inode.i_version = 1;
1434         return &ei->vfs_inode;
1435 }
1436
1437 static void ufs_i_callback(struct rcu_head *head)
1438 {
1439         struct inode *inode = container_of(head, struct inode, i_rcu);
1440         kmem_cache_free(ufs_inode_cachep, UFS_I(inode));
1441 }
1442
1443 static void ufs_destroy_inode(struct inode *inode)
1444 {
1445         call_rcu(&inode->i_rcu, ufs_i_callback);
1446 }
1447
1448 static void init_once(void *foo)
1449 {
1450         struct ufs_inode_info *ei = (struct ufs_inode_info *) foo;
1451
1452         inode_init_once(&ei->vfs_inode);
1453 }
1454
1455 static int init_inodecache(void)
1456 {
1457         ufs_inode_cachep = kmem_cache_create("ufs_inode_cache",
1458                                              sizeof(struct ufs_inode_info),
1459                                              0, (SLAB_RECLAIM_ACCOUNT|
1460                                                 SLAB_MEM_SPREAD),
1461                                              init_once);
1462         if (ufs_inode_cachep == NULL)
1463                 return -ENOMEM;
1464         return 0;
1465 }
1466
1467 static void destroy_inodecache(void)
1468 {
1469         kmem_cache_destroy(ufs_inode_cachep);
1470 }
1471
1472 static const struct super_operations ufs_super_ops = {
1473         .alloc_inode    = ufs_alloc_inode,
1474         .destroy_inode  = ufs_destroy_inode,
1475         .write_inode    = ufs_write_inode,
1476         .evict_inode    = ufs_evict_inode,
1477         .put_super      = ufs_put_super,
1478         .sync_fs        = ufs_sync_fs,
1479         .statfs         = ufs_statfs,
1480         .remount_fs     = ufs_remount,
1481         .show_options   = ufs_show_options,
1482 };
1483
1484 static struct dentry *ufs_mount(struct file_system_type *fs_type,
1485         int flags, const char *dev_name, void *data)
1486 {
1487         return mount_bdev(fs_type, flags, dev_name, data, ufs_fill_super);
1488 }
1489
1490 static struct file_system_type ufs_fs_type = {
1491         .owner          = THIS_MODULE,
1492         .name           = "ufs",
1493         .mount          = ufs_mount,
1494         .kill_sb        = kill_block_super,
1495         .fs_flags       = FS_REQUIRES_DEV,
1496 };
1497
1498 static int __init init_ufs_fs(void)
1499 {
1500         int err = init_inodecache();
1501         if (err)
1502                 goto out1;
1503         err = register_filesystem(&ufs_fs_type);
1504         if (err)
1505                 goto out;
1506         return 0;
1507 out:
1508         destroy_inodecache();
1509 out1:
1510         return err;
1511 }
1512
1513 static void __exit exit_ufs_fs(void)
1514 {
1515         unregister_filesystem(&ufs_fs_type);
1516         destroy_inodecache();
1517 }
1518
1519 module_init(init_ufs_fs)
1520 module_exit(exit_ufs_fs)
1521 MODULE_LICENSE("GPL");