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