1// SPDX-License-Identifier: GPL-2.0-only
   2/*
   3 *  linux/fs/ufs/super.c
   4 *
   5 * Copyright (C) 1998
   6 * Daniel Pirkl <daniel.pirkl@email.cz>
   7 * Charles University, Faculty of Mathematics and Physics
   8 */
   9
  10/* Derived from
  11 *
  12 *  linux/fs/ext2/super.c
  13 *
  14 * Copyright (C) 1992, 1993, 1994, 1995
  15 * Remy Card (card@masi.ibp.fr)
  16 * Laboratoire MASI - Institut Blaise Pascal
  17 * Universite Pierre et Marie Curie (Paris VI)
  18 *
  19 *  from
  20 *
  21 *  linux/fs/minix/inode.c
  22 *
  23 *  Copyright (C) 1991, 1992  Linus Torvalds
  24 *
  25 *  Big-endian to little-endian byte-swapping/bitmaps by
  26 *        David S. Miller (davem@caip.rutgers.edu), 1995
  27 */
  28 
  29/*
  30 * Inspired by
  31 *
  32 *  linux/fs/ufs/super.c
  33 *
  34 * Copyright (C) 1996
  35 * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
  36 * Laboratory for Computer Science Research Computing Facility
  37 * Rutgers, The State University of New Jersey
  38 *
  39 * Copyright (C) 1996  Eddie C. Dost  (ecd@skynet.be)
  40 *
  41 * Kernel module support added on 96/04/26 by
  42 * Stefan Reinauer <stepan@home.culture.mipt.ru>
  43 *
  44 * Module usage counts added on 96/04/29 by
  45 * Gertjan van Wingerde <gwingerde@gmail.com>
  46 *
  47 * Clean swab support on 19970406 by
  48 * Francois-Rene Rideau <fare@tunes.org>
  49 *
  50 * 4.4BSD (FreeBSD) support added on February 1st 1998 by
  51 * Niels Kristian Bech Jensen <nkbj@image.dk> partially based
  52 * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>.
  53 *
  54 * NeXTstep support added on February 5th 1998 by
  55 * Niels Kristian Bech Jensen <nkbj@image.dk>.
  56 *
  57 * write support Daniel Pirkl <daniel.pirkl@email.cz> 1998
  58 * 
  59 * HP/UX hfs filesystem support added by
  60 * Martin K. Petersen <mkp@mkp.net>, August 1999
  61 *
  62 * UFS2 (of FreeBSD 5.x) support added by
  63 * Niraj Kumar <niraj17@iitbombay.org>, Jan 2004
  64 *
  65 * UFS2 write support added by
  66 * Evgeniy Dushistov <dushistov@mail.ru>, 2007
  67 */
  68
  69#include <linux/exportfs.h>
  70#include <linux/module.h>
  71#include <linux/bitops.h>
  72
  73#include <linux/stdarg.h>
  74
  75#include <linux/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/backing-dev.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#include <linux/iversion.h>
  93
  94#include "ufs_fs.h"
  95#include "ufs.h"
  96#include "swab.h"
  97#include "util.h"
  98
  99static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation)
 100{
 101	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
 102	struct inode *inode;
 103
 104	if (ino < UFS_ROOTINO || ino > (u64)uspi->s_ncg * uspi->s_ipg)
 105		return ERR_PTR(-ESTALE);
 106
 107	inode = ufs_iget(sb, ino);
 108	if (IS_ERR(inode))
 109		return ERR_CAST(inode);
 110	if (generation && inode->i_generation != generation) {
 111		iput(inode);
 112		return ERR_PTR(-ESTALE);
 113	}
 114	return inode;
 115}
 116
 117static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid,
 118				       int fh_len, int fh_type)
 119{
 120	return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
 121}
 122
 123static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid,
 124				       int fh_len, int fh_type)
 125{
 126	return generic_fh_to_parent(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
 127}
 128
 129static struct dentry *ufs_get_parent(struct dentry *child)
 130{
 131	ino_t ino;
 132
 133	ino = ufs_inode_by_name(d_inode(child), &dotdot_name);
 134	if (!ino)
 135		return ERR_PTR(-ENOENT);
 136	return d_obtain_alias(ufs_iget(child->d_sb, ino));
 137}
 138
 139static const struct export_operations ufs_export_ops = {
 140	.encode_fh = generic_encode_ino32_fh,
 141	.fh_to_dentry	= ufs_fh_to_dentry,
 142	.fh_to_parent	= ufs_fh_to_parent,
 143	.get_parent	= ufs_get_parent,
 144};
 145
 146#ifdef CONFIG_UFS_DEBUG
 147/*
 148 * Print contents of ufs_super_block, useful for debugging
 149 */
 150static void ufs_print_super_stuff(struct super_block *sb,
 151				  struct ufs_super_block_first *usb1,
 152				  struct ufs_super_block_second *usb2,
 153				  struct ufs_super_block_third *usb3)
 154{
 155	u32 magic = fs32_to_cpu(sb, usb3->fs_magic);
 156
 157	pr_debug("ufs_print_super_stuff\n");
 158	pr_debug("  magic:     0x%x\n", magic);
 159	if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) {
 160		pr_debug("  fs_size:   %llu\n", (unsigned long long)
 161			 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
 162		pr_debug("  fs_dsize:  %llu\n", (unsigned long long)
 163			 fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize));
 164		pr_debug("  bsize:         %u\n",
 165			 fs32_to_cpu(sb, usb1->fs_bsize));
 166		pr_debug("  fsize:         %u\n",
 167			 fs32_to_cpu(sb, usb1->fs_fsize));
 168		pr_debug("  fs_volname:  %s\n", usb2->fs_un.fs_u2.fs_volname);
 169		pr_debug("  fs_sblockloc: %llu\n", (unsigned long long)
 170			 fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc));
 171		pr_debug("  cs_ndir(No of dirs):  %llu\n", (unsigned long long)
 172			 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir));
 173		pr_debug("  cs_nbfree(No of free blocks):  %llu\n",
 174			 (unsigned long long)
 175			 fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
 176		pr_info("  cs_nifree(Num of free inodes): %llu\n",
 177			(unsigned long long)
 178			fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree));
 179		pr_info("  cs_nffree(Num of free frags): %llu\n",
 180			(unsigned long long)
 181			fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree));
 182		pr_info("  fs_maxsymlinklen: %u\n",
 183			fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen));
 184	} else {
 185		pr_debug(" sblkno:      %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
 186		pr_debug(" cblkno:      %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
 187		pr_debug(" iblkno:      %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
 188		pr_debug(" dblkno:      %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
 189		pr_debug(" cgoffset:    %u\n",
 190			 fs32_to_cpu(sb, usb1->fs_cgoffset));
 191		pr_debug(" ~cgmask:     0x%x\n",
 192			 ~fs32_to_cpu(sb, usb1->fs_cgmask));
 193		pr_debug(" size:        %u\n", fs32_to_cpu(sb, usb1->fs_size));
 194		pr_debug(" dsize:       %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
 195		pr_debug(" ncg:         %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
 196		pr_debug(" bsize:       %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
 197		pr_debug(" fsize:       %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
 198		pr_debug(" frag:        %u\n", fs32_to_cpu(sb, usb1->fs_frag));
 199		pr_debug(" fragshift:   %u\n",
 200			 fs32_to_cpu(sb, usb1->fs_fragshift));
 201		pr_debug(" ~fmask:      %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
 202		pr_debug(" fshift:      %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
 203		pr_debug(" sbsize:      %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
 204		pr_debug(" spc:         %u\n", fs32_to_cpu(sb, usb1->fs_spc));
 205		pr_debug(" cpg:         %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
 206		pr_debug(" ipg:         %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
 207		pr_debug(" fpg:         %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
 208		pr_debug(" csaddr:      %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
 209		pr_debug(" cssize:      %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
 210		pr_debug(" cgsize:      %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
 211		pr_debug(" fstodb:      %u\n",
 212			 fs32_to_cpu(sb, usb1->fs_fsbtodb));
 213		pr_debug(" nrpos:       %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
 214		pr_debug(" ndir         %u\n",
 215			 fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
 216		pr_debug(" nifree       %u\n",
 217			 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
 218		pr_debug(" nbfree       %u\n",
 219			 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
 220		pr_debug(" nffree       %u\n",
 221			 fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
 222	}
 223	pr_debug("\n");
 224}
 225
 226/*
 227 * Print contents of ufs_cylinder_group, useful for debugging
 228 */
 229static void ufs_print_cylinder_stuff(struct super_block *sb,
 230				     struct ufs_cylinder_group *cg)
 231{
 232	pr_debug("\nufs_print_cylinder_stuff\n");
 233	pr_debug("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group));
 234	pr_debug("  magic:        %x\n", fs32_to_cpu(sb, cg->cg_magic));
 235	pr_debug("  time:         %u\n", fs32_to_cpu(sb, cg->cg_time));
 236	pr_debug("  cgx:          %u\n", fs32_to_cpu(sb, cg->cg_cgx));
 237	pr_debug("  ncyl:         %u\n", fs16_to_cpu(sb, cg->cg_ncyl));
 238	pr_debug("  niblk:        %u\n", fs16_to_cpu(sb, cg->cg_niblk));
 239	pr_debug("  ndblk:        %u\n", fs32_to_cpu(sb, cg->cg_ndblk));
 240	pr_debug("  cs_ndir:      %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir));
 241	pr_debug("  cs_nbfree:    %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree));
 242	pr_debug("  cs_nifree:    %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree));
 243	pr_debug("  cs_nffree:    %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree));
 244	pr_debug("  rotor:        %u\n", fs32_to_cpu(sb, cg->cg_rotor));
 245	pr_debug("  frotor:       %u\n", fs32_to_cpu(sb, cg->cg_frotor));
 246	pr_debug("  irotor:       %u\n", fs32_to_cpu(sb, cg->cg_irotor));
 247	pr_debug("  frsum:        %u, %u, %u, %u, %u, %u, %u, %u\n",
 248	    fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]),
 249	    fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]),
 250	    fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]),
 251	    fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7]));
 252	pr_debug("  btotoff:      %u\n", fs32_to_cpu(sb, cg->cg_btotoff));
 253	pr_debug("  boff:         %u\n", fs32_to_cpu(sb, cg->cg_boff));
 254	pr_debug("  iuseoff:      %u\n", fs32_to_cpu(sb, cg->cg_iusedoff));
 255	pr_debug("  freeoff:      %u\n", fs32_to_cpu(sb, cg->cg_freeoff));
 256	pr_debug("  nextfreeoff:  %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff));
 257	pr_debug("  clustersumoff %u\n",
 258		 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff));
 259	pr_debug("  clusteroff    %u\n",
 260		 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff));
 261	pr_debug("  nclusterblks  %u\n",
 262		 fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks));
 263	pr_debug("\n");
 264}
 265#else
 266#  define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/
 267#  define ufs_print_cylinder_stuff(sb, cg) /**/
 268#endif /* CONFIG_UFS_DEBUG */
 269
 270static const struct super_operations ufs_super_ops;
 271
 272void ufs_error (struct super_block * sb, const char * function,
 273	const char * fmt, ...)
 274{
 275	struct ufs_sb_private_info * uspi;
 276	struct ufs_super_block_first * usb1;
 277	struct va_format vaf;
 278	va_list args;
 279
 280	uspi = UFS_SB(sb)->s_uspi;
 281	usb1 = ubh_get_usb_first(uspi);
 282	
 283	if (!sb_rdonly(sb)) {
 284		usb1->fs_clean = UFS_FSBAD;
 285		ubh_mark_buffer_dirty(USPI_UBH(uspi));
 286		ufs_mark_sb_dirty(sb);
 287		sb->s_flags |= SB_RDONLY;
 288	}
 289	va_start(args, fmt);
 290	vaf.fmt = fmt;
 291	vaf.va = &args;
 292	switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) {
 293	case UFS_MOUNT_ONERROR_PANIC:
 294		panic("panic (device %s): %s: %pV\n",
 295		      sb->s_id, function, &vaf);
 296
 297	case UFS_MOUNT_ONERROR_LOCK:
 298	case UFS_MOUNT_ONERROR_UMOUNT:
 299	case UFS_MOUNT_ONERROR_REPAIR:
 300		pr_crit("error (device %s): %s: %pV\n",
 301			sb->s_id, function, &vaf);
 302	}
 303	va_end(args);
 304}
 305
 306void ufs_panic (struct super_block * sb, const char * function,
 307	const char * fmt, ...)
 308{
 309	struct ufs_sb_private_info * uspi;
 310	struct ufs_super_block_first * usb1;
 311	struct va_format vaf;
 312	va_list args;
 313	
 314	uspi = UFS_SB(sb)->s_uspi;
 315	usb1 = ubh_get_usb_first(uspi);
 316	
 317	if (!sb_rdonly(sb)) {
 318		usb1->fs_clean = UFS_FSBAD;
 319		ubh_mark_buffer_dirty(USPI_UBH(uspi));
 320		ufs_mark_sb_dirty(sb);
 321	}
 322	va_start(args, fmt);
 323	vaf.fmt = fmt;
 324	vaf.va = &args;
 325	sb->s_flags |= SB_RDONLY;
 326	pr_crit("panic (device %s): %s: %pV\n",
 327		sb->s_id, function, &vaf);
 328	va_end(args);
 329}
 330
 331void ufs_warning (struct super_block * sb, const char * function,
 332	const char * fmt, ...)
 333{
 334	struct va_format vaf;
 335	va_list args;
 336
 337	va_start(args, fmt);
 338	vaf.fmt = fmt;
 339	vaf.va = &args;
 340	pr_warn("(device %s): %s: %pV\n",
 341		sb->s_id, function, &vaf);
 342	va_end(args);
 343}
 344
 345enum {
 346       Opt_type_old = UFS_MOUNT_UFSTYPE_OLD,
 347       Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86,
 348       Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN,
 349       Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS,
 350       Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD,
 351       Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2,
 352       Opt_type_hp = UFS_MOUNT_UFSTYPE_HP,
 353       Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD,
 354       Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP,
 355       Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP,
 356       Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC,
 357       Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK,
 358       Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT,
 359       Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR,
 360       Opt_err
 361};
 362
 363static const match_table_t tokens = {
 364	{Opt_type_old, "ufstype=old"},
 365	{Opt_type_sunx86, "ufstype=sunx86"},
 366	{Opt_type_sun, "ufstype=sun"},
 367	{Opt_type_sunos, "ufstype=sunos"},
 368	{Opt_type_44bsd, "ufstype=44bsd"},
 369	{Opt_type_ufs2, "ufstype=ufs2"},
 370	{Opt_type_ufs2, "ufstype=5xbsd"},
 371	{Opt_type_hp, "ufstype=hp"},
 372	{Opt_type_nextstepcd, "ufstype=nextstep-cd"},
 373	{Opt_type_nextstep, "ufstype=nextstep"},
 374	{Opt_type_openstep, "ufstype=openstep"},
 375/*end of possible ufs types */
 376	{Opt_onerror_panic, "onerror=panic"},
 377	{Opt_onerror_lock, "onerror=lock"},
 378	{Opt_onerror_umount, "onerror=umount"},
 379	{Opt_onerror_repair, "onerror=repair"},
 380	{Opt_err, NULL}
 381};
 382
 383static int ufs_parse_options (char * options, unsigned * mount_options)
 384{
 385	char * p;
 386	
 387	UFSD("ENTER\n");
 388	
 389	if (!options)
 390		return 1;
 391
 392	while ((p = strsep(&options, ",")) != NULL) {
 393		substring_t args[MAX_OPT_ARGS];
 394		int token;
 395		if (!*p)
 396			continue;
 397
 398		token = match_token(p, tokens, args);
 399		switch (token) {
 400		case Opt_type_old:
 401			ufs_clear_opt (*mount_options, UFSTYPE);
 402			ufs_set_opt (*mount_options, UFSTYPE_OLD);
 403			break;
 404		case Opt_type_sunx86:
 405			ufs_clear_opt (*mount_options, UFSTYPE);
 406			ufs_set_opt (*mount_options, UFSTYPE_SUNx86);
 407			break;
 408		case Opt_type_sun:
 409			ufs_clear_opt (*mount_options, UFSTYPE);
 410			ufs_set_opt (*mount_options, UFSTYPE_SUN);
 411			break;
 412		case Opt_type_sunos:
 413			ufs_clear_opt(*mount_options, UFSTYPE);
 414			ufs_set_opt(*mount_options, UFSTYPE_SUNOS);
 415			break;
 416		case Opt_type_44bsd:
 417			ufs_clear_opt (*mount_options, UFSTYPE);
 418			ufs_set_opt (*mount_options, UFSTYPE_44BSD);
 419			break;
 420		case Opt_type_ufs2:
 421			ufs_clear_opt(*mount_options, UFSTYPE);
 422			ufs_set_opt(*mount_options, UFSTYPE_UFS2);
 423			break;
 424		case Opt_type_hp:
 425			ufs_clear_opt (*mount_options, UFSTYPE);
 426			ufs_set_opt (*mount_options, UFSTYPE_HP);
 427			break;
 428		case Opt_type_nextstepcd:
 429			ufs_clear_opt (*mount_options, UFSTYPE);
 430			ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD);
 431			break;
 432		case Opt_type_nextstep:
 433			ufs_clear_opt (*mount_options, UFSTYPE);
 434			ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP);
 435			break;
 436		case Opt_type_openstep:
 437			ufs_clear_opt (*mount_options, UFSTYPE);
 438			ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP);
 439			break;
 440		case Opt_onerror_panic:
 441			ufs_clear_opt (*mount_options, ONERROR);
 442			ufs_set_opt (*mount_options, ONERROR_PANIC);
 443			break;
 444		case Opt_onerror_lock:
 445			ufs_clear_opt (*mount_options, ONERROR);
 446			ufs_set_opt (*mount_options, ONERROR_LOCK);
 447			break;
 448		case Opt_onerror_umount:
 449			ufs_clear_opt (*mount_options, ONERROR);
 450			ufs_set_opt (*mount_options, ONERROR_UMOUNT);
 451			break;
 452		case Opt_onerror_repair:
 453			pr_err("Unable to do repair on error, will lock lock instead\n");
 454			ufs_clear_opt (*mount_options, ONERROR);
 455			ufs_set_opt (*mount_options, ONERROR_REPAIR);
 456			break;
 457		default:
 458			pr_err("Invalid option: \"%s\" or missing value\n", p);
 459			return 0;
 460		}
 461	}
 462	return 1;
 463}
 464
 465/*
 466 * Different types of UFS hold fs_cstotal in different
 467 * places, and use different data structure for it.
 468 * To make things simpler we just copy fs_cstotal to ufs_sb_private_info
 469 */
 470static void ufs_setup_cstotal(struct super_block *sb)
 471{
 472	struct ufs_sb_info *sbi = UFS_SB(sb);
 473	struct ufs_sb_private_info *uspi = sbi->s_uspi;
 474	struct ufs_super_block_first *usb1;
 475	struct ufs_super_block_second *usb2;
 476	struct ufs_super_block_third *usb3;
 477	unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
 478
 479	UFSD("ENTER, mtype=%u\n", mtype);
 480	usb1 = ubh_get_usb_first(uspi);
 481	usb2 = ubh_get_usb_second(uspi);
 482	usb3 = ubh_get_usb_third(uspi);
 483
 484	if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
 485	     (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) ||
 486	    mtype == UFS_MOUNT_UFSTYPE_UFS2) {
 487		/*we have statistic in different place, then usual*/
 488		uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir);
 489		uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree);
 490		uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree);
 491		uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree);
 492	} else {
 493		uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir);
 494		uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree);
 495		uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
 496		uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
 497	}
 498	UFSD("EXIT\n");
 499}
 500
 501/*
 502 * Read on-disk structures associated with cylinder groups
 503 */
 504static int ufs_read_cylinder_structures(struct super_block *sb)
 505{
 506	struct ufs_sb_info *sbi = UFS_SB(sb);
 507	struct ufs_sb_private_info *uspi = sbi->s_uspi;
 
 508	unsigned char * base, * space;
 509	unsigned size, blks, i;
 510
 511	UFSD("ENTER\n");
 512
 513	/*
 514	 * Read cs structures from (usually) first data block
 515	 * on the device. 
 516	 */
 517	size = uspi->s_cssize;
 518	blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
 519	base = space = kmalloc(size, GFP_NOFS);
 520	if (!base)
 521		goto failed; 
 522	sbi->s_csp = (struct ufs_csum *)space;
 523	for (i = 0; i < blks; i++) {
 524		struct buffer_head *bh = sb_bread(sb, uspi->s_csaddr + i);
 525		if (!bh)
 
 
 
 
 
 526			goto failed;
 527		memcpy(space, bh->b_data, uspi->s_fsize);
 528		space += uspi->s_fsize;
 529		brelse (bh);
 
 
 
 530	}
 531
 532	/*
 533	 * Read cylinder group (we read only first fragment from block
 534	 * at this time) and prepare internal data structures for cg caching.
 535	 */
 536	sbi->s_ucg = kmalloc_array(uspi->s_ncg, sizeof(struct buffer_head *),
 537				   GFP_NOFS);
 538	if (!sbi->s_ucg)
 539		goto failed;
 540	for (i = 0; i < uspi->s_ncg; i++) 
 541		sbi->s_ucg[i] = NULL;
 542	for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
 543		sbi->s_ucpi[i] = NULL;
 544		sbi->s_cgno[i] = UFS_CGNO_EMPTY;
 545	}
 546	for (i = 0; i < uspi->s_ncg; i++) {
 547		UFSD("read cg %u\n", i);
 548		if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i))))
 549			goto failed;
 550		if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data))
 551			goto failed;
 552
 553		ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data);
 554	}
 555	for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
 556		if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS)))
 557			goto failed;
 558		sbi->s_cgno[i] = UFS_CGNO_EMPTY;
 559	}
 560	sbi->s_cg_loaded = 0;
 561	UFSD("EXIT\n");
 562	return 1;
 563
 564failed:
 565	kfree (base);
 566	if (sbi->s_ucg) {
 567		for (i = 0; i < uspi->s_ncg; i++)
 568			if (sbi->s_ucg[i])
 569				brelse (sbi->s_ucg[i]);
 570		kfree (sbi->s_ucg);
 571		for (i = 0; i < UFS_MAX_GROUP_LOADED; i++)
 572			kfree (sbi->s_ucpi[i]);
 573	}
 574	UFSD("EXIT (FAILED)\n");
 575	return 0;
 576}
 577
 578/*
 579 * Sync our internal copy of fs_cstotal with disk
 580 */
 581static void ufs_put_cstotal(struct super_block *sb)
 582{
 583	unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
 584	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
 585	struct ufs_super_block_first *usb1;
 586	struct ufs_super_block_second *usb2;
 587	struct ufs_super_block_third *usb3;
 588
 589	UFSD("ENTER\n");
 590	usb1 = ubh_get_usb_first(uspi);
 591	usb2 = ubh_get_usb_second(uspi);
 592	usb3 = ubh_get_usb_third(uspi);
 593
 594	if (mtype == UFS_MOUNT_UFSTYPE_UFS2) {
 595		/*we have statistic in different place, then usual*/
 596		usb2->fs_un.fs_u2.cs_ndir =
 597			cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
 598		usb2->fs_un.fs_u2.cs_nbfree =
 599			cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
 600		usb3->fs_un1.fs_u2.cs_nifree =
 601			cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
 602		usb3->fs_un1.fs_u2.cs_nffree =
 603			cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
 604		goto out;
 605	}
 606
 607	if (mtype == UFS_MOUNT_UFSTYPE_44BSD &&
 608	     (usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) {
 609		/* store stats in both old and new places */
 610		usb2->fs_un.fs_u2.cs_ndir =
 611			cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
 612		usb2->fs_un.fs_u2.cs_nbfree =
 613			cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
 614		usb3->fs_un1.fs_u2.cs_nifree =
 615			cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
 616		usb3->fs_un1.fs_u2.cs_nffree =
 617			cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
 618	}
 619	usb1->fs_cstotal.cs_ndir = cpu_to_fs32(sb, uspi->cs_total.cs_ndir);
 620	usb1->fs_cstotal.cs_nbfree = cpu_to_fs32(sb, uspi->cs_total.cs_nbfree);
 621	usb1->fs_cstotal.cs_nifree = cpu_to_fs32(sb, uspi->cs_total.cs_nifree);
 622	usb1->fs_cstotal.cs_nffree = cpu_to_fs32(sb, uspi->cs_total.cs_nffree);
 623out:
 624	ubh_mark_buffer_dirty(USPI_UBH(uspi));
 625	ufs_print_super_stuff(sb, usb1, usb2, usb3);
 626	UFSD("EXIT\n");
 627}
 628
 629/**
 630 * ufs_put_super_internal() - put on-disk intrenal structures
 631 * @sb: pointer to super_block structure
 632 * Put on-disk structures associated with cylinder groups
 633 * and write them back to disk, also update cs_total on disk
 634 */
 635static void ufs_put_super_internal(struct super_block *sb)
 636{
 637	struct ufs_sb_info *sbi = UFS_SB(sb);
 638	struct ufs_sb_private_info *uspi = sbi->s_uspi;
 
 639	unsigned char * base, * space;
 640	unsigned blks, size, i;
 641
 642	
 643	UFSD("ENTER\n");
 644
 645	ufs_put_cstotal(sb);
 646	size = uspi->s_cssize;
 647	blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
 648	base = space = (char*) sbi->s_csp;
 649	for (i = 0; i < blks; i++, space += uspi->s_fsize) {
 650		struct buffer_head *bh = sb_bread(sb, uspi->s_csaddr + i);
 651
 652		if (unlikely(!bh)) { // better than an oops...
 653			ufs_panic(sb, __func__,
 654				"can't write part of cylinder group summary");
 655			continue;
 656		}
 657		memcpy(bh->b_data, space, uspi->s_fsize);
 658		mark_buffer_dirty(bh);
 659		brelse(bh);
 
 660	}
 661	for (i = 0; i < sbi->s_cg_loaded; i++) {
 662		ufs_put_cylinder (sb, i);
 663		kfree (sbi->s_ucpi[i]);
 664	}
 665	for (; i < UFS_MAX_GROUP_LOADED; i++) 
 666		kfree (sbi->s_ucpi[i]);
 667	for (i = 0; i < uspi->s_ncg; i++) 
 668		brelse (sbi->s_ucg[i]);
 669	kfree (sbi->s_ucg);
 670	kfree (base);
 671
 672	UFSD("EXIT\n");
 673}
 674
 675static int ufs_sync_fs(struct super_block *sb, int wait)
 676{
 677	struct ufs_sb_private_info * uspi;
 678	struct ufs_super_block_first * usb1;
 679	struct ufs_super_block_third * usb3;
 680	unsigned flags;
 681
 682	mutex_lock(&UFS_SB(sb)->s_lock);
 683
 684	UFSD("ENTER\n");
 685
 686	flags = UFS_SB(sb)->s_flags;
 687	uspi = UFS_SB(sb)->s_uspi;
 688	usb1 = ubh_get_usb_first(uspi);
 689	usb3 = ubh_get_usb_third(uspi);
 690
 691	usb1->fs_time = ufs_get_seconds(sb);
 692	if ((flags & UFS_ST_MASK) == UFS_ST_SUN  ||
 693	    (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
 694	    (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
 695		ufs_set_fs_state(sb, usb1, usb3,
 696				UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
 697	ufs_put_cstotal(sb);
 698
 699	UFSD("EXIT\n");
 700	mutex_unlock(&UFS_SB(sb)->s_lock);
 701
 702	return 0;
 703}
 704
 705static void delayed_sync_fs(struct work_struct *work)
 706{
 707	struct ufs_sb_info *sbi;
 708
 709	sbi = container_of(work, struct ufs_sb_info, sync_work.work);
 710
 711	spin_lock(&sbi->work_lock);
 712	sbi->work_queued = 0;
 713	spin_unlock(&sbi->work_lock);
 714
 715	ufs_sync_fs(sbi->sb, 1);
 716}
 717
 718void ufs_mark_sb_dirty(struct super_block *sb)
 719{
 720	struct ufs_sb_info *sbi = UFS_SB(sb);
 721	unsigned long delay;
 722
 723	spin_lock(&sbi->work_lock);
 724	if (!sbi->work_queued) {
 725		delay = msecs_to_jiffies(dirty_writeback_interval * 10);
 726		queue_delayed_work(system_long_wq, &sbi->sync_work, delay);
 727		sbi->work_queued = 1;
 728	}
 729	spin_unlock(&sbi->work_lock);
 730}
 731
 732static void ufs_put_super(struct super_block *sb)
 733{
 734	struct ufs_sb_info * sbi = UFS_SB(sb);
 735
 736	UFSD("ENTER\n");
 737
 738	if (!sb_rdonly(sb))
 739		ufs_put_super_internal(sb);
 740	cancel_delayed_work_sync(&sbi->sync_work);
 741
 742	ubh_brelse_uspi (sbi->s_uspi);
 743	kfree (sbi->s_uspi);
 744	kfree (sbi);
 745	sb->s_fs_info = NULL;
 746	UFSD("EXIT\n");
 747	return;
 748}
 749
 750static u64 ufs_max_bytes(struct super_block *sb)
 751{
 752	struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
 753	int bits = uspi->s_apbshift;
 754	u64 res;
 755
 756	if (bits > 21)
 757		res = ~0ULL;
 758	else
 759		res = UFS_NDADDR + (1LL << bits) + (1LL << (2*bits)) +
 760			(1LL << (3*bits));
 761
 762	if (res >= (MAX_LFS_FILESIZE >> uspi->s_bshift))
 763		return MAX_LFS_FILESIZE;
 764	return res << uspi->s_bshift;
 765}
 766
 767static int ufs_fill_super(struct super_block *sb, void *data, int silent)
 768{
 769	struct ufs_sb_info * sbi;
 770	struct ufs_sb_private_info * uspi;
 771	struct ufs_super_block_first * usb1;
 772	struct ufs_super_block_second * usb2;
 773	struct ufs_super_block_third * usb3;
 774	struct ufs_buffer_head * ubh;	
 775	struct inode *inode;
 776	unsigned block_size, super_block_size;
 777	unsigned flags;
 778	unsigned super_block_offset;
 779	unsigned maxsymlen;
 780	int ret = -EINVAL;
 781
 782	uspi = NULL;
 783	ubh = NULL;
 784	flags = 0;
 785	
 786	UFSD("ENTER\n");
 787
 788#ifndef CONFIG_UFS_FS_WRITE
 789	if (!sb_rdonly(sb)) {
 790		pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
 791		return -EROFS;
 792	}
 793#endif
 794		
 795	sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL);
 796	if (!sbi)
 797		goto failed_nomem;
 798	sb->s_fs_info = sbi;
 799	sbi->sb = sb;
 800
 801	UFSD("flag %u\n", (int)(sb_rdonly(sb)));
 802	
 803	mutex_init(&sbi->s_lock);
 804	spin_lock_init(&sbi->work_lock);
 805	INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
 806	/*
 807	 * Set default mount options
 808	 * Parse mount options
 809	 */
 810	sbi->s_mount_opt = 0;
 811	ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK);
 812	if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) {
 813		pr_err("wrong mount options\n");
 814		goto failed;
 815	}
 816	if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) {
 817		if (!silent)
 818			pr_err("You didn't specify the type of your ufs filesystem\n\n"
 819			"mount -t ufs -o ufstype="
 820			"sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n"
 821			">>>WARNING<<< Wrong ufstype may corrupt your filesystem, "
 822			"default is ufstype=old\n");
 823		ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD);
 824	}
 825
 826	uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL);
 827	sbi->s_uspi = uspi;
 828	if (!uspi)
 829		goto failed;
 830	uspi->s_dirblksize = UFS_SECTOR_SIZE;
 831	super_block_offset=UFS_SBLOCK;
 832
 833	sb->s_maxbytes = MAX_LFS_FILESIZE;
 834
 835	sb->s_time_gran = NSEC_PER_SEC;
 836	sb->s_time_min = S32_MIN;
 837	sb->s_time_max = S32_MAX;
 838
 839	switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) {
 840	case UFS_MOUNT_UFSTYPE_44BSD:
 841		UFSD("ufstype=44bsd\n");
 842		uspi->s_fsize = block_size = 512;
 843		uspi->s_fmask = ~(512 - 1);
 844		uspi->s_fshift = 9;
 845		uspi->s_sbsize = super_block_size = 1536;
 846		uspi->s_sbbase = 0;
 847		flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
 848		break;
 849	case UFS_MOUNT_UFSTYPE_UFS2:
 850		UFSD("ufstype=ufs2\n");
 851		super_block_offset=SBLOCK_UFS2;
 852		uspi->s_fsize = block_size = 512;
 853		uspi->s_fmask = ~(512 - 1);
 854		uspi->s_fshift = 9;
 855		uspi->s_sbsize = super_block_size = 1536;
 856		uspi->s_sbbase =  0;
 857		sb->s_time_gran = 1;
 858		sb->s_time_min = S64_MIN;
 859		sb->s_time_max = S64_MAX;
 860		flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
 861		break;
 862		
 863	case UFS_MOUNT_UFSTYPE_SUN:
 864		UFSD("ufstype=sun\n");
 865		uspi->s_fsize = block_size = 1024;
 866		uspi->s_fmask = ~(1024 - 1);
 867		uspi->s_fshift = 10;
 868		uspi->s_sbsize = super_block_size = 2048;
 869		uspi->s_sbbase = 0;
 870		uspi->s_maxsymlinklen = 0; /* Not supported on disk */
 871		flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN;
 872		break;
 873
 874	case UFS_MOUNT_UFSTYPE_SUNOS:
 875		UFSD("ufstype=sunos\n");
 876		uspi->s_fsize = block_size = 1024;
 877		uspi->s_fmask = ~(1024 - 1);
 878		uspi->s_fshift = 10;
 879		uspi->s_sbsize = 2048;
 880		super_block_size = 2048;
 881		uspi->s_sbbase = 0;
 882		uspi->s_maxsymlinklen = 0; /* Not supported on disk */
 883		flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN;
 884		break;
 885
 886	case UFS_MOUNT_UFSTYPE_SUNx86:
 887		UFSD("ufstype=sunx86\n");
 888		uspi->s_fsize = block_size = 1024;
 889		uspi->s_fmask = ~(1024 - 1);
 890		uspi->s_fshift = 10;
 891		uspi->s_sbsize = super_block_size = 2048;
 892		uspi->s_sbbase = 0;
 893		uspi->s_maxsymlinklen = 0; /* Not supported on disk */
 894		flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN;
 895		break;
 896
 897	case UFS_MOUNT_UFSTYPE_OLD:
 898		UFSD("ufstype=old\n");
 899		uspi->s_fsize = block_size = 1024;
 900		uspi->s_fmask = ~(1024 - 1);
 901		uspi->s_fshift = 10;
 902		uspi->s_sbsize = super_block_size = 2048;
 903		uspi->s_sbbase = 0;
 904		flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
 905		if (!sb_rdonly(sb)) {
 906			if (!silent)
 907				pr_info("ufstype=old is supported read-only\n");
 908			sb->s_flags |= SB_RDONLY;
 909		}
 910		break;
 911	
 912	case UFS_MOUNT_UFSTYPE_NEXTSTEP:
 913		UFSD("ufstype=nextstep\n");
 914		uspi->s_fsize = block_size = 1024;
 915		uspi->s_fmask = ~(1024 - 1);
 916		uspi->s_fshift = 10;
 917		uspi->s_sbsize = super_block_size = 2048;
 918		uspi->s_sbbase = 0;
 919		uspi->s_dirblksize = 1024;
 920		flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
 921		if (!sb_rdonly(sb)) {
 922			if (!silent)
 923				pr_info("ufstype=nextstep is supported read-only\n");
 924			sb->s_flags |= SB_RDONLY;
 925		}
 926		break;
 927	
 928	case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD:
 929		UFSD("ufstype=nextstep-cd\n");
 930		uspi->s_fsize = block_size = 2048;
 931		uspi->s_fmask = ~(2048 - 1);
 932		uspi->s_fshift = 11;
 933		uspi->s_sbsize = super_block_size = 2048;
 934		uspi->s_sbbase = 0;
 935		uspi->s_dirblksize = 1024;
 936		flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
 937		if (!sb_rdonly(sb)) {
 938			if (!silent)
 939				pr_info("ufstype=nextstep-cd is supported read-only\n");
 940			sb->s_flags |= SB_RDONLY;
 941		}
 942		break;
 943	
 944	case UFS_MOUNT_UFSTYPE_OPENSTEP:
 945		UFSD("ufstype=openstep\n");
 946		uspi->s_fsize = block_size = 1024;
 947		uspi->s_fmask = ~(1024 - 1);
 948		uspi->s_fshift = 10;
 949		uspi->s_sbsize = super_block_size = 2048;
 950		uspi->s_sbbase = 0;
 951		uspi->s_dirblksize = 1024;
 952		flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
 953		if (!sb_rdonly(sb)) {
 954			if (!silent)
 955				pr_info("ufstype=openstep is supported read-only\n");
 956			sb->s_flags |= SB_RDONLY;
 957		}
 958		break;
 959	
 960	case UFS_MOUNT_UFSTYPE_HP:
 961		UFSD("ufstype=hp\n");
 962		uspi->s_fsize = block_size = 1024;
 963		uspi->s_fmask = ~(1024 - 1);
 964		uspi->s_fshift = 10;
 965		uspi->s_sbsize = super_block_size = 2048;
 966		uspi->s_sbbase = 0;
 967		flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
 968		if (!sb_rdonly(sb)) {
 969			if (!silent)
 970				pr_info("ufstype=hp is supported read-only\n");
 971			sb->s_flags |= SB_RDONLY;
 972 		}
 973 		break;
 974	default:
 975		if (!silent)
 976			pr_err("unknown ufstype\n");
 977		goto failed;
 978	}
 979	
 980again:	
 981	if (!sb_set_blocksize(sb, block_size)) {
 982		pr_err("failed to set blocksize\n");
 983		goto failed;
 984	}
 985
 986	/*
 987	 * read ufs super block from device
 988	 */
 989
 990	ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size);
 991	
 992	if (!ubh) 
 993            goto failed;
 994
 995	usb1 = ubh_get_usb_first(uspi);
 996	usb2 = ubh_get_usb_second(uspi);
 997	usb3 = ubh_get_usb_third(uspi);
 998
 999	/* Sort out mod used on SunOS 4.1.3 for fs_state */
1000	uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat);
1001	if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) &&
1002	    (uspi->s_postblformat != UFS_42POSTBLFMT)) {
1003		flags &= ~UFS_ST_MASK;
1004		flags |=  UFS_ST_SUN;
1005	}
1006
1007	if ((flags & UFS_ST_MASK) == UFS_ST_44BSD &&
1008	    uspi->s_postblformat == UFS_42POSTBLFMT) {
1009		if (!silent)
1010			pr_err("this is not a 44bsd filesystem");
1011		goto failed;
1012	}
1013
1014	/*
1015	 * Check ufs magic number
1016	 */
1017	sbi->s_bytesex = BYTESEX_LE;
1018	switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
1019		case UFS_MAGIC:
1020		case UFS_MAGIC_BW:
1021		case UFS2_MAGIC:
1022		case UFS_MAGIC_LFN:
1023	        case UFS_MAGIC_FEA:
1024	        case UFS_MAGIC_4GB:
1025			goto magic_found;
1026	}
1027	sbi->s_bytesex = BYTESEX_BE;
1028	switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
1029		case UFS_MAGIC:
1030		case UFS_MAGIC_BW:
1031		case UFS2_MAGIC:
1032		case UFS_MAGIC_LFN:
1033	        case UFS_MAGIC_FEA:
1034	        case UFS_MAGIC_4GB:
1035			goto magic_found;
1036	}
1037
1038	if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP) 
1039	  || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD) 
1040	  || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP)) 
1041	  && uspi->s_sbbase < 256) {
1042		ubh_brelse_uspi(uspi);
1043		ubh = NULL;
1044		uspi->s_sbbase += 8;
1045		goto again;
1046	}
1047	if (!silent)
1048		pr_err("%s(): bad magic number\n", __func__);
1049	goto failed;
1050
1051magic_found:
1052	/*
1053	 * Check block and fragment sizes
1054	 */
1055	uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize);
1056	uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize);
1057	uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize);
1058	uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1059	uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
1060
1061	if (!is_power_of_2(uspi->s_fsize)) {
1062		pr_err("%s(): fragment size %u is not a power of 2\n",
1063		       __func__, uspi->s_fsize);
1064		goto failed;
1065	}
1066	if (uspi->s_fsize < 512) {
1067		pr_err("%s(): fragment size %u is too small\n",
1068		       __func__, uspi->s_fsize);
1069		goto failed;
1070	}
1071	if (uspi->s_fsize > 4096) {
1072		pr_err("%s(): fragment size %u is too large\n",
1073		       __func__, uspi->s_fsize);
1074		goto failed;
1075	}
1076	if (!is_power_of_2(uspi->s_bsize)) {
1077		pr_err("%s(): block size %u is not a power of 2\n",
1078		       __func__, uspi->s_bsize);
1079		goto failed;
1080	}
1081	if (uspi->s_bsize < 4096) {
1082		pr_err("%s(): block size %u is too small\n",
1083		       __func__, uspi->s_bsize);
1084		goto failed;
1085	}
1086	if (uspi->s_bsize / uspi->s_fsize > 8) {
1087		pr_err("%s(): too many fragments per block (%u)\n",
1088		       __func__, uspi->s_bsize / uspi->s_fsize);
1089		goto failed;
1090	}
1091	if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) {
1092		ubh_brelse_uspi(uspi);
1093		ubh = NULL;
1094		block_size = uspi->s_fsize;
1095		super_block_size = uspi->s_sbsize;
1096		UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size);
1097		goto again;
1098	}
1099
1100	sbi->s_flags = flags;/*after that line some functions use s_flags*/
1101	ufs_print_super_stuff(sb, usb1, usb2, usb3);
1102
1103	/*
1104	 * Check, if file system was correctly unmounted.
1105	 * If not, make it read only.
1106	 */
1107	if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) ||
1108	  ((flags & UFS_ST_MASK) == UFS_ST_OLD) ||
1109	  (((flags & UFS_ST_MASK) == UFS_ST_SUN ||
1110	    (flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
1111	  (flags & UFS_ST_MASK) == UFS_ST_SUNx86) &&
1112	  (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) {
1113		switch(usb1->fs_clean) {
1114		case UFS_FSCLEAN:
1115			UFSD("fs is clean\n");
1116			break;
1117		case UFS_FSSTABLE:
1118			UFSD("fs is stable\n");
1119			break;
1120		case UFS_FSLOG:
1121			UFSD("fs is logging fs\n");
1122			break;
1123		case UFS_FSOSF1:
1124			UFSD("fs is DEC OSF/1\n");
1125			break;
1126		case UFS_FSACTIVE:
1127			pr_err("%s(): fs is active\n", __func__);
1128			sb->s_flags |= SB_RDONLY;
1129			break;
1130		case UFS_FSBAD:
1131			pr_err("%s(): fs is bad\n", __func__);
1132			sb->s_flags |= SB_RDONLY;
1133			break;
1134		default:
1135			pr_err("%s(): can't grok fs_clean 0x%x\n",
1136			       __func__, usb1->fs_clean);
1137			sb->s_flags |= SB_RDONLY;
1138			break;
1139		}
1140	} else {
1141		pr_err("%s(): fs needs fsck\n", __func__);
1142		sb->s_flags |= SB_RDONLY;
1143	}
1144
1145	/*
1146	 * Read ufs_super_block into internal data structures
1147	 */
1148	sb->s_op = &ufs_super_ops;
1149	sb->s_export_op = &ufs_export_ops;
1150
1151	sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic);
1152
1153	uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno);
1154	uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno);
1155	uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno);
1156	uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno);
1157	uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset);
1158	uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask);
1159
1160	if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
1161		uspi->s_size  = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size);
1162		uspi->s_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize);
1163	} else {
1164		uspi->s_size  =  fs32_to_cpu(sb, usb1->fs_size);
1165		uspi->s_dsize =  fs32_to_cpu(sb, usb1->fs_dsize);
1166	}
1167
1168	uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg);
1169	/* s_bsize already set */
1170	/* s_fsize already set */
1171	uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag);
1172	uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree);
1173	uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask);
1174	uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
1175	uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift);
1176	uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
1177	UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift,
1178		uspi->s_fshift);
1179	uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift);
1180	uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb);
1181	/* s_sbsize already set */
1182	uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask);
1183	uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift);
1184	uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir);
1185	uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb);
1186	uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf);
1187	uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3);
1188	uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave);
1189	uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew);
1190
1191	if (uspi->fs_magic == UFS2_MAGIC)
1192		uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr);
1193	else
1194		uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr);
1195
1196	uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize);
1197	uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize);
1198	uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak);
1199	uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect);
1200	uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc);
1201	uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg);
1202	uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg);
1203	uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc);
1204	uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize);
1205	uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3);
1206	uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3);
1207	uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos);
1208	uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff);
1209	uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff);
1210
1211	uspi->s_root_blocks = mul_u64_u32_div(uspi->s_dsize,
1212					      uspi->s_minfree, 100);
1213	if (uspi->s_minfree <= 5) {
1214		uspi->s_time_to_space = ~0ULL;
1215		uspi->s_space_to_time = 0;
1216		usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTSPACE);
1217	} else {
1218		uspi->s_time_to_space = (uspi->s_root_blocks / 2) + 1;
1219		uspi->s_space_to_time = mul_u64_u32_div(uspi->s_dsize,
1220					      uspi->s_minfree - 2, 100) - 1;
1221	}
1222
1223	/*
1224	 * Compute another frequently used values
1225	 */
1226	uspi->s_fpbmask = uspi->s_fpb - 1;
1227	if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
1228		uspi->s_apbshift = uspi->s_bshift - 3;
1229	else
1230		uspi->s_apbshift = uspi->s_bshift - 2;
1231
 
 
1232	uspi->s_apb = 1 << uspi->s_apbshift;
 
 
1233	uspi->s_apbmask = uspi->s_apb - 1;
1234	uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS;
1235	uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift;
1236	uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift;
1237	uspi->s_bpf = uspi->s_fsize << 3;
1238	uspi->s_bpfshift = uspi->s_fshift + 3;
1239	uspi->s_bpfmask = uspi->s_bpf - 1;
1240	if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD ||
1241	    (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2)
1242		uspi->s_maxsymlinklen =
1243		    fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen);
1244
1245	if (uspi->fs_magic == UFS2_MAGIC)
1246		maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR);
1247	else
1248		maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR);
1249	if (uspi->s_maxsymlinklen > maxsymlen) {
1250		ufs_warning(sb, __func__, "ufs_read_super: excessive maximum "
1251			    "fast symlink size (%u)\n", uspi->s_maxsymlinklen);
1252		uspi->s_maxsymlinklen = maxsymlen;
1253	}
1254	sb->s_maxbytes = ufs_max_bytes(sb);
1255	sb->s_max_links = UFS_LINK_MAX;
1256
1257	inode = ufs_iget(sb, UFS_ROOTINO);
1258	if (IS_ERR(inode)) {
1259		ret = PTR_ERR(inode);
1260		goto failed;
1261	}
1262	sb->s_root = d_make_root(inode);
1263	if (!sb->s_root) {
1264		ret = -ENOMEM;
1265		goto failed;
1266	}
1267
1268	ufs_setup_cstotal(sb);
1269	/*
1270	 * Read cylinder group structures
1271	 */
1272	if (!sb_rdonly(sb))
1273		if (!ufs_read_cylinder_structures(sb))
1274			goto failed;
1275
1276	UFSD("EXIT\n");
1277	return 0;
1278
1279failed:
1280	if (ubh)
1281		ubh_brelse_uspi (uspi);
1282	kfree (uspi);
1283	kfree(sbi);
1284	sb->s_fs_info = NULL;
1285	UFSD("EXIT (FAILED)\n");
1286	return ret;
1287
1288failed_nomem:
1289	UFSD("EXIT (NOMEM)\n");
1290	return -ENOMEM;
1291}
1292
1293static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
1294{
1295	struct ufs_sb_private_info * uspi;
1296	struct ufs_super_block_first * usb1;
1297	struct ufs_super_block_third * usb3;
1298	unsigned new_mount_opt, ufstype;
1299	unsigned flags;
1300
1301	sync_filesystem(sb);
1302	mutex_lock(&UFS_SB(sb)->s_lock);
1303	uspi = UFS_SB(sb)->s_uspi;
1304	flags = UFS_SB(sb)->s_flags;
1305	usb1 = ubh_get_usb_first(uspi);
1306	usb3 = ubh_get_usb_third(uspi);
1307	
1308	/*
1309	 * Allow the "check" option to be passed as a remount option.
1310	 * It is not possible to change ufstype option during remount
1311	 */
1312	ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
1313	new_mount_opt = 0;
1314	ufs_set_opt (new_mount_opt, ONERROR_LOCK);
1315	if (!ufs_parse_options (data, &new_mount_opt)) {
1316		mutex_unlock(&UFS_SB(sb)->s_lock);
1317		return -EINVAL;
1318	}
1319	if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
1320		new_mount_opt |= ufstype;
1321	} else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
1322		pr_err("ufstype can't be changed during remount\n");
1323		mutex_unlock(&UFS_SB(sb)->s_lock);
1324		return -EINVAL;
1325	}
1326
1327	if ((bool)(*mount_flags & SB_RDONLY) == sb_rdonly(sb)) {
1328		UFS_SB(sb)->s_mount_opt = new_mount_opt;
1329		mutex_unlock(&UFS_SB(sb)->s_lock);
1330		return 0;
1331	}
1332	
1333	/*
1334	 * fs was mouted as rw, remounting ro
1335	 */
1336	if (*mount_flags & SB_RDONLY) {
1337		ufs_put_super_internal(sb);
1338		usb1->fs_time = ufs_get_seconds(sb);
1339		if ((flags & UFS_ST_MASK) == UFS_ST_SUN
1340		  || (flags & UFS_ST_MASK) == UFS_ST_SUNOS
1341		  || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) 
1342			ufs_set_fs_state(sb, usb1, usb3,
1343				UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
1344		ubh_mark_buffer_dirty (USPI_UBH(uspi));
1345		sb->s_flags |= SB_RDONLY;
1346	} else {
1347	/*
1348	 * fs was mounted as ro, remounting rw
1349	 */
1350#ifndef CONFIG_UFS_FS_WRITE
1351		pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
1352		mutex_unlock(&UFS_SB(sb)->s_lock);
1353		return -EINVAL;
1354#else
1355		if (ufstype != UFS_MOUNT_UFSTYPE_SUN && 
1356		    ufstype != UFS_MOUNT_UFSTYPE_SUNOS &&
1357		    ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
1358		    ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
1359		    ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
1360			pr_err("this ufstype is read-only supported\n");
1361			mutex_unlock(&UFS_SB(sb)->s_lock);
1362			return -EINVAL;
1363		}
1364		if (!ufs_read_cylinder_structures(sb)) {
1365			pr_err("failed during remounting\n");
1366			mutex_unlock(&UFS_SB(sb)->s_lock);
1367			return -EPERM;
1368		}
1369		sb->s_flags &= ~SB_RDONLY;
1370#endif
1371	}
1372	UFS_SB(sb)->s_mount_opt = new_mount_opt;
1373	mutex_unlock(&UFS_SB(sb)->s_lock);
1374	return 0;
1375}
1376
1377static int ufs_show_options(struct seq_file *seq, struct dentry *root)
1378{
1379	struct ufs_sb_info *sbi = UFS_SB(root->d_sb);
1380	unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
1381	const struct match_token *tp = tokens;
1382
1383	while (tp->token != Opt_onerror_panic && tp->token != mval)
1384		++tp;
1385	BUG_ON(tp->token == Opt_onerror_panic);
1386	seq_printf(seq, ",%s", tp->pattern);
1387
1388	mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR;
1389	while (tp->token != Opt_err && tp->token != mval)
1390		++tp;
1391	BUG_ON(tp->token == Opt_err);
1392	seq_printf(seq, ",%s", tp->pattern);
1393
1394	return 0;
1395}
1396
1397static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
1398{
1399	struct super_block *sb = dentry->d_sb;
1400	struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi;
1401	unsigned  flags = UFS_SB(sb)->s_flags;
1402	u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
1403
1404	mutex_lock(&UFS_SB(sb)->s_lock);
1405	
1406	if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
1407		buf->f_type = UFS2_MAGIC;
1408	else
1409		buf->f_type = UFS_MAGIC;
1410
1411	buf->f_blocks = uspi->s_dsize;
1412	buf->f_bfree = ufs_freefrags(uspi);
1413	buf->f_ffree = uspi->cs_total.cs_nifree;
1414	buf->f_bsize = sb->s_blocksize;
1415	buf->f_bavail = (buf->f_bfree > uspi->s_root_blocks)
1416		? (buf->f_bfree - uspi->s_root_blocks) : 0;
1417	buf->f_files = uspi->s_ncg * uspi->s_ipg;
1418	buf->f_namelen = UFS_MAXNAMLEN;
1419	buf->f_fsid = u64_to_fsid(id);
1420
1421	mutex_unlock(&UFS_SB(sb)->s_lock);
1422
1423	return 0;
1424}
1425
1426static struct kmem_cache * ufs_inode_cachep;
1427
1428static struct inode *ufs_alloc_inode(struct super_block *sb)
1429{
1430	struct ufs_inode_info *ei;
1431
1432	ei = alloc_inode_sb(sb, ufs_inode_cachep, GFP_NOFS);
1433	if (!ei)
1434		return NULL;
1435
1436	inode_set_iversion(&ei->vfs_inode, 1);
1437	seqlock_init(&ei->meta_lock);
1438	mutex_init(&ei->truncate_mutex);
1439	return &ei->vfs_inode;
1440}
1441
1442static void ufs_free_in_core_inode(struct inode *inode)
1443{
1444	kmem_cache_free(ufs_inode_cachep, UFS_I(inode));
1445}
1446
1447static void init_once(void *foo)
1448{
1449	struct ufs_inode_info *ei = (struct ufs_inode_info *) foo;
1450
1451	inode_init_once(&ei->vfs_inode);
1452}
1453
1454static int __init init_inodecache(void)
1455{
1456	ufs_inode_cachep = kmem_cache_create_usercopy("ufs_inode_cache",
1457				sizeof(struct ufs_inode_info), 0,
1458				(SLAB_RECLAIM_ACCOUNT | SLAB_ACCOUNT),
1459				offsetof(struct ufs_inode_info, i_u1.i_symlink),
1460				sizeof_field(struct ufs_inode_info,
1461					i_u1.i_symlink),
1462				init_once);
1463	if (ufs_inode_cachep == NULL)
1464		return -ENOMEM;
1465	return 0;
1466}
1467
1468static void destroy_inodecache(void)
1469{
1470	/*
1471	 * Make sure all delayed rcu free inodes are flushed before we
1472	 * destroy cache.
1473	 */
1474	rcu_barrier();
1475	kmem_cache_destroy(ufs_inode_cachep);
1476}
1477
1478static const struct super_operations ufs_super_ops = {
1479	.alloc_inode	= ufs_alloc_inode,
1480	.free_inode	= ufs_free_in_core_inode,
1481	.write_inode	= ufs_write_inode,
1482	.evict_inode	= ufs_evict_inode,
1483	.put_super	= ufs_put_super,
1484	.sync_fs	= ufs_sync_fs,
1485	.statfs		= ufs_statfs,
1486	.remount_fs	= ufs_remount,
1487	.show_options   = ufs_show_options,
1488};
1489
1490static struct dentry *ufs_mount(struct file_system_type *fs_type,
1491	int flags, const char *dev_name, void *data)
1492{
1493	return mount_bdev(fs_type, flags, dev_name, data, ufs_fill_super);
1494}
1495
1496static struct file_system_type ufs_fs_type = {
1497	.owner		= THIS_MODULE,
1498	.name		= "ufs",
1499	.mount		= ufs_mount,
1500	.kill_sb	= kill_block_super,
1501	.fs_flags	= FS_REQUIRES_DEV,
1502};
1503MODULE_ALIAS_FS("ufs");
1504
1505static int __init init_ufs_fs(void)
1506{
1507	int err = init_inodecache();
1508	if (err)
1509		goto out1;
1510	err = register_filesystem(&ufs_fs_type);
1511	if (err)
1512		goto out;
1513	return 0;
1514out:
1515	destroy_inodecache();
1516out1:
1517	return err;
1518}
1519
1520static void __exit exit_ufs_fs(void)
1521{
1522	unregister_filesystem(&ufs_fs_type);
1523	destroy_inodecache();
1524}
1525
1526module_init(init_ufs_fs)
1527module_exit(exit_ufs_fs)
1528MODULE_DESCRIPTION("UFS Filesystem");
1529MODULE_LICENSE("GPL");