Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1347 insertions, 0 deletions

diff --git a/fs/ufs/super.c b/fs/ufs/super.c
new file mode 100644
index 0000000..f036d69
--- /dev/null
+++ b/fs/ufs/super.c
@@ -0,0 +1,1347 @@
+/*
+ *  linux/fs/ufs/super.c
+ *
+ * Copyright (C) 1998
+ * Daniel Pirkl <daniel.pirkl@email.cz>
+ * Charles University, Faculty of Mathematics and Physics
+ */
+
+/* Derived from
+ *
+ *  linux/fs/ext2/super.c
+ *
+ * Copyright (C) 1992, 1993, 1994, 1995
+ * Remy Card (card@masi.ibp.fr)
+ * Laboratoire MASI - Institut Blaise Pascal
+ * Universite Pierre et Marie Curie (Paris VI)
+ *
+ *  from
+ *
+ *  linux/fs/minix/inode.c
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ *
+ *  Big-endian to little-endian byte-swapping/bitmaps by
+ *        David S. Miller (davem@caip.rutgers.edu), 1995
+ */
+ 
+/*
+ * Inspired by
+ *
+ *  linux/fs/ufs/super.c
+ *
+ * Copyright (C) 1996
+ * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
+ * Laboratory for Computer Science Research Computing Facility
+ * Rutgers, The State University of New Jersey
+ *
+ * Copyright (C) 1996  Eddie C. Dost  (ecd@skynet.be)
+ *
+ * Kernel module support added on 96/04/26 by
+ * Stefan Reinauer <stepan@home.culture.mipt.ru>
+ *
+ * Module usage counts added on 96/04/29 by
+ * Gertjan van Wingerde <gertjan@cs.vu.nl>
+ *
+ * Clean swab support on 19970406 by
+ * Francois-Rene Rideau <fare@tunes.org>
+ *
+ * 4.4BSD (FreeBSD) support added on February 1st 1998 by
+ * Niels Kristian Bech Jensen <nkbj@image.dk> partially based
+ * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>.
+ *
+ * NeXTstep support added on February 5th 1998 by
+ * Niels Kristian Bech Jensen <nkbj@image.dk>.
+ *
+ * write support Daniel Pirkl <daniel.pirkl@email.cz> 1998
+ * 
+ * HP/UX hfs filesystem support added by
+ * Martin K. Petersen <mkp@mkp.net>, August 1999
+ *
+ * UFS2 (of FreeBSD 5.x) support added by
+ * Niraj Kumar <niraj17@iitbombay.org>, Jan 2004
+ *
+ */
+
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/bitops.h>
+
+#include <stdarg.h>
+
+#include <asm/uaccess.h>
+#include <asm/system.h>
+
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/ufs_fs.h>
+#include <linux/slab.h>
+#include <linux/time.h>
+#include <linux/stat.h>
+#include <linux/string.h>
+#include <linux/blkdev.h>
+#include <linux/init.h>
+#include <linux/parser.h>
+#include <linux/smp_lock.h>
+#include <linux/buffer_head.h>
+#include <linux/vfs.h>
+
+#include "swab.h"
+#include "util.h"
+
+#undef UFS_SUPER_DEBUG
+#undef UFS_SUPER_DEBUG_MORE
+
+
+#undef UFS_SUPER_DEBUG_MORE
+#ifdef UFS_SUPER_DEBUG
+#define UFSD(x) printk("(%s, %d), %s: ", __FILE__, __LINE__, __FUNCTION__); printk x;
+#else
+#define UFSD(x)
+#endif
+
+#ifdef UFS_SUPER_DEBUG_MORE
+/*
+ * Print contents of ufs_super_block, useful for debugging
+ */
+void ufs_print_super_stuff(struct super_block *sb,
+	struct ufs_super_block_first * usb1,
+	struct ufs_super_block_second * usb2, 
+	struct ufs_super_block_third * usb3)
+{
+	printk("ufs_print_super_stuff\n");
+	printk("size of usb:     %u\n", sizeof(struct ufs_super_block));
+	printk("  magic:         0x%x\n", fs32_to_cpu(sb, usb3->fs_magic));
+	printk("  sblkno:        %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
+	printk("  cblkno:        %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
+	printk("  iblkno:        %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
+	printk("  dblkno:        %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
+	printk("  cgoffset:      %u\n", fs32_to_cpu(sb, usb1->fs_cgoffset));
+	printk("  ~cgmask:       0x%x\n", ~fs32_to_cpu(sb, usb1->fs_cgmask));
+	printk("  size:          %u\n", fs32_to_cpu(sb, usb1->fs_size));
+	printk("  dsize:         %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
+	printk("  ncg:           %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
+	printk("  bsize:         %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
+	printk("  fsize:         %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
+	printk("  frag:          %u\n", fs32_to_cpu(sb, usb1->fs_frag));
+	printk("  fragshift:     %u\n", fs32_to_cpu(sb, usb1->fs_fragshift));
+	printk("  ~fmask:        %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
+	printk("  fshift:        %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
+	printk("  sbsize:        %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
+	printk("  spc:           %u\n", fs32_to_cpu(sb, usb1->fs_spc));
+	printk("  cpg:           %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
+	printk("  ipg:           %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
+	printk("  fpg:           %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
+	printk("  csaddr:        %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
+	printk("  cssize:        %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
+	printk("  cgsize:        %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
+	printk("  fstodb:        %u\n", fs32_to_cpu(sb, usb1->fs_fsbtodb));
+	printk("  contigsumsize: %d\n", fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_contigsumsize));
+	printk("  postblformat:  %u\n", fs32_to_cpu(sb, usb3->fs_postblformat));
+	printk("  nrpos:         %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
+	printk("  ndir           %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
+	printk("  nifree         %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
+	printk("  nbfree         %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
+	printk("  nffree         %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
+	printk("\n");
+}
+
+/*
+ * Print contents of ufs2 ufs_super_block, useful for debugging
+ */
+void ufs2_print_super_stuff(
+     struct super_block *sb,
+      struct ufs_super_block *usb)
+{
+	printk("ufs_print_super_stuff\n");
+	printk("size of usb:     %u\n", sizeof(struct ufs_super_block));
+	printk("  magic:         0x%x\n", fs32_to_cpu(sb, usb->fs_magic));
+	printk("  fs_size:   %u\n",fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_size));
+	printk("  fs_dsize:  %u\n",fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_dsize));
+	printk("  bsize:         %u\n", fs32_to_cpu(usb, usb->fs_bsize));
+	printk("  fsize:         %u\n", fs32_to_cpu(usb, usb->fs_fsize));
+	printk("  fs_volname:  %s\n", usb->fs_u11.fs_u2.fs_volname);
+	printk("  fs_fsmnt:  %s\n", usb->fs_u11.fs_u2.fs_fsmnt);
+	printk("  fs_sblockloc: %u\n",fs64_to_cpu(sb,
+			usb->fs_u11.fs_u2.fs_sblockloc));
+	printk("  cs_ndir(No of dirs):  %u\n",fs64_to_cpu(sb,
+			usb->fs_u11.fs_u2.fs_cstotal.cs_ndir));
+	printk("  cs_nbfree(No of free blocks):  %u\n",fs64_to_cpu(sb,
+			usb->fs_u11.fs_u2.fs_cstotal.cs_nbfree));
+	printk("\n");
+}
+
+/*
+ * Print contents of ufs_cylinder_group, useful for debugging
+ */
+void ufs_print_cylinder_stuff(struct super_block *sb, struct ufs_cylinder_group *cg)
+{
+	printk("\nufs_print_cylinder_stuff\n");
+	printk("size of ucg: %u\n", sizeof(struct ufs_cylinder_group));
+	printk("  magic:        %x\n", fs32_to_cpu(sb, cg->cg_magic));
+	printk("  time:         %u\n", fs32_to_cpu(sb, cg->cg_time));
+	printk("  cgx:          %u\n", fs32_to_cpu(sb, cg->cg_cgx));
+	printk("  ncyl:         %u\n", fs16_to_cpu(sb, cg->cg_ncyl));
+	printk("  niblk:        %u\n", fs16_to_cpu(sb, cg->cg_niblk));
+	printk("  ndblk:        %u\n", fs32_to_cpu(sb, cg->cg_ndblk));
+	printk("  cs_ndir:      %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir));
+	printk("  cs_nbfree:    %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree));
+	printk("  cs_nifree:    %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree));
+	printk("  cs_nffree:    %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree));
+	printk("  rotor:        %u\n", fs32_to_cpu(sb, cg->cg_rotor));
+	printk("  frotor:       %u\n", fs32_to_cpu(sb, cg->cg_frotor));
+	printk("  irotor:       %u\n", fs32_to_cpu(sb, cg->cg_irotor));
+	printk("  frsum:        %u, %u, %u, %u, %u, %u, %u, %u\n",
+	    fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]),
+	    fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]),
+	    fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]),
+	    fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7]));
+	printk("  btotoff:      %u\n", fs32_to_cpu(sb, cg->cg_btotoff));
+	printk("  boff:         %u\n", fs32_to_cpu(sb, cg->cg_boff));
+	printk("  iuseoff:      %u\n", fs32_to_cpu(sb, cg->cg_iusedoff));
+	printk("  freeoff:      %u\n", fs32_to_cpu(sb, cg->cg_freeoff));
+	printk("  nextfreeoff:  %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff));
+	printk("  clustersumoff %u\n", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff));
+	printk("  clusteroff    %u\n", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff));
+	printk("  nclusterblks  %u\n", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks));
+	printk("\n");
+}
+#endif /* UFS_SUPER_DEBUG_MORE */
+
+static struct super_operations ufs_super_ops;
+
+static char error_buf[1024];
+
+void ufs_error (struct super_block * sb, const char * function,
+	const char * fmt, ...)
+{
+	struct ufs_sb_private_info * uspi;
+	struct ufs_super_block_first * usb1;
+	va_list args;
+
+	uspi = UFS_SB(sb)->s_uspi;
+	usb1 = ubh_get_usb_first(USPI_UBH);
+	
+	if (!(sb->s_flags & MS_RDONLY)) {
+		usb1->fs_clean = UFS_FSBAD;
+		ubh_mark_buffer_dirty(USPI_UBH);
+		sb->s_dirt = 1;
+		sb->s_flags |= MS_RDONLY;
+	}
+	va_start (args, fmt);
+	vsprintf (error_buf, fmt, args);
+	va_end (args);
+	switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) {
+	case UFS_MOUNT_ONERROR_PANIC:
+		panic ("UFS-fs panic (device %s): %s: %s\n", 
+			sb->s_id, function, error_buf);
+
+	case UFS_MOUNT_ONERROR_LOCK:
+	case UFS_MOUNT_ONERROR_UMOUNT:
+	case UFS_MOUNT_ONERROR_REPAIR:
+		printk (KERN_CRIT "UFS-fs error (device %s): %s: %s\n",
+			sb->s_id, function, error_buf);
+	}		
+}
+
+void ufs_panic (struct super_block * sb, const char * function,
+	const char * fmt, ...)
+{
+	struct ufs_sb_private_info * uspi;
+	struct ufs_super_block_first * usb1;
+	va_list args;
+	
+	uspi = UFS_SB(sb)->s_uspi;
+	usb1 = ubh_get_usb_first(USPI_UBH);
+	
+	if (!(sb->s_flags & MS_RDONLY)) {
+		usb1->fs_clean = UFS_FSBAD;
+		ubh_mark_buffer_dirty(USPI_UBH);
+		sb->s_dirt = 1;
+	}
+	va_start (args, fmt);
+	vsprintf (error_buf, fmt, args);
+	va_end (args);
+	sb->s_flags |= MS_RDONLY;
+	printk (KERN_CRIT "UFS-fs panic (device %s): %s: %s\n",
+		sb->s_id, function, error_buf);
+}
+
+void ufs_warning (struct super_block * sb, const char * function,
+	const char * fmt, ...)
+{
+	va_list args;
+
+	va_start (args, fmt);
+	vsprintf (error_buf, fmt, args);
+	va_end (args);
+	printk (KERN_WARNING "UFS-fs warning (device %s): %s: %s\n",
+		sb->s_id, function, error_buf);
+}
+
+enum {
+	Opt_type_old, Opt_type_sunx86, Opt_type_sun, Opt_type_44bsd,
+	Opt_type_ufs2, Opt_type_hp, Opt_type_nextstepcd, Opt_type_nextstep,
+	Opt_type_openstep, Opt_onerror_panic, Opt_onerror_lock,
+	Opt_onerror_umount, Opt_onerror_repair, Opt_err
+};
+
+static match_table_t tokens = {
+	{Opt_type_old, "ufstype=old"},
+	{Opt_type_sunx86, "ufstype=sunx86"},
+	{Opt_type_sun, "ufstype=sun"},
+	{Opt_type_44bsd, "ufstype=44bsd"},
+	{Opt_type_ufs2, "ufstype=ufs2"},
+	{Opt_type_ufs2, "ufstype=5xbsd"},
+	{Opt_type_hp, "ufstype=hp"},
+	{Opt_type_nextstepcd, "ufstype=nextstep-cd"},
+	{Opt_type_nextstep, "ufstype=nextstep"},
+	{Opt_type_openstep, "ufstype=openstep"},
+	{Opt_onerror_panic, "onerror=panic"},
+	{Opt_onerror_lock, "onerror=lock"},
+	{Opt_onerror_umount, "onerror=umount"},
+	{Opt_onerror_repair, "onerror=repair"},
+	{Opt_err, NULL}
+};
+
+static int ufs_parse_options (char * options, unsigned * mount_options)
+{
+	char * p;
+	
+	UFSD(("ENTER\n"))
+	
+	if (!options)
+		return 1;
+
+	while ((p = strsep(&options, ",")) != NULL) {
+		substring_t args[MAX_OPT_ARGS];
+		int token;
+		if (!*p)
+			continue;
+
+		token = match_token(p, tokens, args);
+		switch (token) {
+		case Opt_type_old:
+			ufs_clear_opt (*mount_options, UFSTYPE);
+			ufs_set_opt (*mount_options, UFSTYPE_OLD);
+			break;
+		case Opt_type_sunx86:
+			ufs_clear_opt (*mount_options, UFSTYPE);
+			ufs_set_opt (*mount_options, UFSTYPE_SUNx86);
+			break;
+		case Opt_type_sun:
+			ufs_clear_opt (*mount_options, UFSTYPE);
+			ufs_set_opt (*mount_options, UFSTYPE_SUN);
+			break;
+		case Opt_type_44bsd:
+			ufs_clear_opt (*mount_options, UFSTYPE);
+			ufs_set_opt (*mount_options, UFSTYPE_44BSD);
+			break;
+		case Opt_type_ufs2:
+			ufs_clear_opt(*mount_options, UFSTYPE);
+			ufs_set_opt(*mount_options, UFSTYPE_UFS2);
+			break;
+		case Opt_type_hp:
+			ufs_clear_opt (*mount_options, UFSTYPE);
+			ufs_set_opt (*mount_options, UFSTYPE_HP);
+			break;
+		case Opt_type_nextstepcd:
+			ufs_clear_opt (*mount_options, UFSTYPE);
+			ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD);
+			break;
+		case Opt_type_nextstep:
+			ufs_clear_opt (*mount_options, UFSTYPE);
+			ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP);
+			break;
+		case Opt_type_openstep:
+			ufs_clear_opt (*mount_options, UFSTYPE);
+			ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP);
+			break;
+		case Opt_onerror_panic:
+			ufs_clear_opt (*mount_options, ONERROR);
+			ufs_set_opt (*mount_options, ONERROR_PANIC);
+			break;
+		case Opt_onerror_lock:
+			ufs_clear_opt (*mount_options, ONERROR);
+			ufs_set_opt (*mount_options, ONERROR_LOCK);
+			break;
+		case Opt_onerror_umount:
+			ufs_clear_opt (*mount_options, ONERROR);
+			ufs_set_opt (*mount_options, ONERROR_UMOUNT);
+			break;
+		case Opt_onerror_repair:
+			printk("UFS-fs: Unable to do repair on error, "
+				"will lock lock instead\n");
+			ufs_clear_opt (*mount_options, ONERROR);
+			ufs_set_opt (*mount_options, ONERROR_REPAIR);
+			break;
+		default:
+			printk("UFS-fs: Invalid option: \"%s\" "
+					"or missing value\n", p);
+			return 0;
+		}
+	}
+	return 1;
+}
+
+/*
+ * Read on-disk structures associated with cylinder groups
+ */
+static int ufs_read_cylinder_structures (struct super_block *sb) {
+	struct ufs_sb_info * sbi = UFS_SB(sb);
+	struct ufs_sb_private_info * uspi;
+	struct ufs_super_block *usb;
+	struct ufs_buffer_head * ubh;
+	unsigned char * base, * space;
+	unsigned size, blks, i;
+	unsigned flags = 0;
+	
+	UFSD(("ENTER\n"))
+	
+	uspi = sbi->s_uspi;
+
+	usb  = (struct ufs_super_block *)
+		((struct ufs_buffer_head *)uspi)->bh[0]->b_data;
+
+        flags = UFS_SB(sb)->s_flags;
+	
+	/*
+	 * Read cs structures from (usually) first data block
+	 * on the device. 
+	 */
+	size = uspi->s_cssize;
+	blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
+	base = space = kmalloc(size, GFP_KERNEL);
+	if (!base)
+		goto failed; 
+	for (i = 0; i < blks; i += uspi->s_fpb) {
+		size = uspi->s_bsize;
+		if (i + uspi->s_fpb > blks)
+			size = (blks - i) * uspi->s_fsize;
+
+		if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
+			ubh = ubh_bread(sb,
+				fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_csaddr) + i, size);
+			if (!ubh)
+				goto failed;
+			ubh_ubhcpymem (space, ubh, size);
+			sbi->s_csp[ufs_fragstoblks(i)]=(struct ufs_csum *)space;
+		}
+		else {
+			ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
+			if (!ubh)
+				goto failed;
+			ubh_ubhcpymem(space, ubh, size);
+			sbi->s_csp[ufs_fragstoblks(i)]=(struct ufs_csum *)space;
+		}
+		space += size;
+		ubh_brelse (ubh);
+		ubh = NULL;
+	}
+
+	/*
+	 * Read cylinder group (we read only first fragment from block
+	 * at this time) and prepare internal data structures for cg caching.
+	 */
+	if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_KERNEL)))
+		goto failed;
+	for (i = 0; i < uspi->s_ncg; i++) 
+		sbi->s_ucg[i] = NULL;
+	for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
+		sbi->s_ucpi[i] = NULL;
+		sbi->s_cgno[i] = UFS_CGNO_EMPTY;
+	}
+	for (i = 0; i < uspi->s_ncg; i++) {
+		UFSD(("read cg %u\n", i))
+		if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i))))
+			goto failed;
+		if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data))
+			goto failed;
+#ifdef UFS_SUPER_DEBUG_MORE
+		ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data);
+#endif
+	}
+	for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
+		if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_KERNEL)))
+			goto failed;
+		sbi->s_cgno[i] = UFS_CGNO_EMPTY;
+	}
+	sbi->s_cg_loaded = 0;
+	UFSD(("EXIT\n"))
+	return 1;
+
+failed:
+	if (base) kfree (base);
+	if (sbi->s_ucg) {
+		for (i = 0; i < uspi->s_ncg; i++)
+			if (sbi->s_ucg[i]) brelse (sbi->s_ucg[i]);
+		kfree (sbi->s_ucg);
+		for (i = 0; i < UFS_MAX_GROUP_LOADED; i++)
+			if (sbi->s_ucpi[i]) kfree (sbi->s_ucpi[i]);
+	}
+	UFSD(("EXIT (FAILED)\n"))
+	return 0;
+}
+
+/*
+ * Put on-disk structures associated with cylinder groups and 
+ * write them back to disk
+ */
+static void ufs_put_cylinder_structures (struct super_block *sb) {
+	struct ufs_sb_info * sbi = UFS_SB(sb);
+	struct ufs_sb_private_info * uspi;
+	struct ufs_buffer_head * ubh;
+	unsigned char * base, * space;
+	unsigned blks, size, i;
+	
+	UFSD(("ENTER\n"))
+	
+	uspi = sbi->s_uspi;
+
+	size = uspi->s_cssize;
+	blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
+	base = space = (char*) sbi->s_csp[0];
+	for (i = 0; i < blks; i += uspi->s_fpb) {
+		size = uspi->s_bsize;
+		if (i + uspi->s_fpb > blks)
+			size = (blks - i) * uspi->s_fsize;
+		ubh = ubh_bread(sb, uspi->s_csaddr + i, size);
+		ubh_memcpyubh (ubh, space, size);
+		space += size;
+		ubh_mark_buffer_uptodate (ubh, 1);
+		ubh_mark_buffer_dirty (ubh);
+		ubh_brelse (ubh);
+	}
+	for (i = 0; i < sbi->s_cg_loaded; i++) {
+		ufs_put_cylinder (sb, i);
+		kfree (sbi->s_ucpi[i]);
+	}
+	for (; i < UFS_MAX_GROUP_LOADED; i++) 
+		kfree (sbi->s_ucpi[i]);
+	for (i = 0; i < uspi->s_ncg; i++) 
+		brelse (sbi->s_ucg[i]);
+	kfree (sbi->s_ucg);
+	kfree (base);
+	UFSD(("EXIT\n"))
+}
+
+static int ufs_fill_super(struct super_block *sb, void *data, int silent)
+{
+	struct ufs_sb_info * sbi;
+	struct ufs_sb_private_info * uspi;
+	struct ufs_super_block_first * usb1;
+	struct ufs_super_block_second * usb2;
+	struct ufs_super_block_third * usb3;
+	struct ufs_super_block *usb;
+	struct ufs_buffer_head * ubh;	
+	struct inode *inode;
+	unsigned block_size, super_block_size;
+	unsigned flags;
+
+	uspi = NULL;
+	ubh = NULL;
+	flags = 0;
+	
+	UFSD(("ENTER\n"))
+		
+	sbi = kmalloc(sizeof(struct ufs_sb_info), GFP_KERNEL);
+	if (!sbi)
+		goto failed_nomem;
+	sb->s_fs_info = sbi;
+	memset(sbi, 0, sizeof(struct ufs_sb_info));
+
+	UFSD(("flag %u\n", (int)(sb->s_flags & MS_RDONLY)))
+	
+#ifndef CONFIG_UFS_FS_WRITE
+	if (!(sb->s_flags & MS_RDONLY)) {
+		printk("ufs was compiled with read-only support, "
+		"can't be mounted as read-write\n");
+		goto failed;
+	}
+#endif
+	/*
+	 * Set default mount options
+	 * Parse mount options
+	 */
+	sbi->s_mount_opt = 0;
+	ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK);
+	if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) {
+		printk("wrong mount options\n");
+		goto failed;
+	}
+	if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) {
+		if (!silent)
+			printk("You didn't specify the type of your ufs filesystem\n\n"
+			"mount -t ufs -o ufstype="
+			"sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|netxstep-cd|openstep ...\n\n"
+			">>>WARNING<<< Wrong ufstype may corrupt your filesystem, "
+			"default is ufstype=old\n");
+		ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD);
+	}
+
+	sbi->s_uspi = uspi =
+		kmalloc (sizeof(struct ufs_sb_private_info), GFP_KERNEL);
+	if (!uspi)
+		goto failed;
+
+	/* Keep 2Gig file limit. Some UFS variants need to override 
+	   this but as I don't know which I'll let those in the know loosen
+	   the rules */
+	   
+	switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) {
+	case UFS_MOUNT_UFSTYPE_44BSD:
+		UFSD(("ufstype=44bsd\n"))
+		uspi->s_fsize = block_size = 512;
+		uspi->s_fmask = ~(512 - 1);
+		uspi->s_fshift = 9;
+		uspi->s_sbsize = super_block_size = 1536;
+		uspi->s_sbbase = 0;
+		flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
+		break;
+	case UFS_MOUNT_UFSTYPE_UFS2:
+		UFSD(("ufstype=ufs2\n"))
+		uspi->s_fsize = block_size = 512;
+		uspi->s_fmask = ~(512 - 1);
+		uspi->s_fshift = 9;
+		uspi->s_sbsize = super_block_size = 1536;
+		uspi->s_sbbase =  0;
+		flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
+		if (!(sb->s_flags & MS_RDONLY)) {
+			printk(KERN_INFO "ufstype=ufs2 is supported read-only\n");
+			sb->s_flags |= MS_RDONLY;
+ 		}
+		break;
+		
+	case UFS_MOUNT_UFSTYPE_SUN:
+		UFSD(("ufstype=sun\n"))
+		uspi->s_fsize = block_size = 1024;
+		uspi->s_fmask = ~(1024 - 1);
+		uspi->s_fshift = 10;
+		uspi->s_sbsize = super_block_size = 2048;
+		uspi->s_sbbase = 0;
+		uspi->s_maxsymlinklen = 56;
+		flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN;
+		break;
+
+	case UFS_MOUNT_UFSTYPE_SUNx86:
+		UFSD(("ufstype=sunx86\n"))
+		uspi->s_fsize = block_size = 1024;
+		uspi->s_fmask = ~(1024 - 1);
+		uspi->s_fshift = 10;
+		uspi->s_sbsize = super_block_size = 2048;
+		uspi->s_sbbase = 0;
+		uspi->s_maxsymlinklen = 56;
+		flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN;
+		break;
+
+	case UFS_MOUNT_UFSTYPE_OLD:
+		UFSD(("ufstype=old\n"))
+		uspi->s_fsize = block_size = 1024;
+		uspi->s_fmask = ~(1024 - 1);
+		uspi->s_fshift = 10;
+		uspi->s_sbsize = super_block_size = 2048;
+		uspi->s_sbbase = 0;
+		flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
+		if (!(sb->s_flags & MS_RDONLY)) {
+			if (!silent)
+				printk(KERN_INFO "ufstype=old is supported read-only\n");
+			sb->s_flags |= MS_RDONLY;
+		}
+		break;
+	
+	case UFS_MOUNT_UFSTYPE_NEXTSTEP:
+		UFSD(("ufstype=nextstep\n"))
+		uspi->s_fsize = block_size = 1024;
+		uspi->s_fmask = ~(1024 - 1);
+		uspi->s_fshift = 10;
+		uspi->s_sbsize = super_block_size = 2048;
+		uspi->s_sbbase = 0;
+		flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
+		if (!(sb->s_flags & MS_RDONLY)) {
+			if (!silent)
+				printk(KERN_INFO "ufstype=nextstep is supported read-only\n");
+			sb->s_flags |= MS_RDONLY;
+		}
+		break;
+	
+	case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD:
+		UFSD(("ufstype=nextstep-cd\n"))
+		uspi->s_fsize = block_size = 2048;
+		uspi->s_fmask = ~(2048 - 1);
+		uspi->s_fshift = 11;
+		uspi->s_sbsize = super_block_size = 2048;
+		uspi->s_sbbase = 0;
+		flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
+		if (!(sb->s_flags & MS_RDONLY)) {
+			if (!silent)
+				printk(KERN_INFO "ufstype=nextstep-cd is supported read-only\n");
+			sb->s_flags |= MS_RDONLY;
+		}
+		break;
+	
+	case UFS_MOUNT_UFSTYPE_OPENSTEP:
+		UFSD(("ufstype=openstep\n"))
+		uspi->s_fsize = block_size = 1024;
+		uspi->s_fmask = ~(1024 - 1);
+		uspi->s_fshift = 10;
+		uspi->s_sbsize = super_block_size = 2048;
+		uspi->s_sbbase = 0;
+		flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
+		if (!(sb->s_flags & MS_RDONLY)) {
+			if (!silent)
+				printk(KERN_INFO "ufstype=openstep is supported read-only\n");
+			sb->s_flags |= MS_RDONLY;
+		}
+		break;
+	
+	case UFS_MOUNT_UFSTYPE_HP:
+		UFSD(("ufstype=hp\n"))
+		uspi->s_fsize = block_size = 1024;
+		uspi->s_fmask = ~(1024 - 1);
+		uspi->s_fshift = 10;
+		uspi->s_sbsize = super_block_size = 2048;
+		uspi->s_sbbase = 0;
+		flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
+		if (!(sb->s_flags & MS_RDONLY)) {
+			if (!silent)
+				printk(KERN_INFO "ufstype=hp is supported read-only\n");
+			sb->s_flags |= MS_RDONLY;
+ 		}
+ 		break;
+	default:
+		if (!silent)
+			printk("unknown ufstype\n");
+		goto failed;
+	}
+	
+again:	
+	if (!sb_set_blocksize(sb, block_size)) {
+		printk(KERN_ERR "UFS: failed to set blocksize\n");
+		goto failed;
+	}
+
+	/*
+	 * read ufs super block from device
+	 */
+	if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
+		ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + SBLOCK_UFS2/block_size, super_block_size);
+	}
+	else {
+		ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + UFS_SBLOCK/block_size, super_block_size);
+	}
+	if (!ubh) 
+            goto failed;
+
+	
+	usb1 = ubh_get_usb_first(USPI_UBH);
+	usb2 = ubh_get_usb_second(USPI_UBH);
+	usb3 = ubh_get_usb_third(USPI_UBH);
+	usb  = (struct ufs_super_block *)
+		((struct ufs_buffer_head *)uspi)->bh[0]->b_data ;
+
+	/*
+	 * Check ufs magic number
+	 */
+	sbi->s_bytesex = BYTESEX_LE;
+	switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
+		case UFS_MAGIC:
+		case UFS2_MAGIC:
+		case UFS_MAGIC_LFN:
+	        case UFS_MAGIC_FEA:
+	        case UFS_MAGIC_4GB:
+			goto magic_found;
+	}
+	sbi->s_bytesex = BYTESEX_BE;
+	switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
+		case UFS_MAGIC:
+		case UFS2_MAGIC:
+		case UFS_MAGIC_LFN:
+	        case UFS_MAGIC_FEA:
+	        case UFS_MAGIC_4GB:
+			goto magic_found;
+	}
+
+	if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP) 
+	  || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD) 
+	  || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP)) 
+	  && uspi->s_sbbase < 256) {
+		ubh_brelse_uspi(uspi);
+		ubh = NULL;
+		uspi->s_sbbase += 8;
+		goto again;
+	}
+	if (!silent)
+		printk("ufs_read_super: bad magic number\n");
+	goto failed;
+
+magic_found:
+	/*
+	 * Check block and fragment sizes
+	 */
+	uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize);
+	uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize);
+	uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize);
+	uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
+	uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
+
+	if (uspi->s_fsize & (uspi->s_fsize - 1)) {
+		printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n",
+			uspi->s_fsize);
+			goto failed;
+	}
+	if (uspi->s_fsize < 512) {
+		printk(KERN_ERR "ufs_read_super: fragment size %u is too small\n",
+			uspi->s_fsize);
+		goto failed;
+	}
+	if (uspi->s_fsize > 4096) {
+		printk(KERN_ERR "ufs_read_super: fragment size %u is too large\n",
+			uspi->s_fsize);
+		goto failed;
+	}
+	if (uspi->s_bsize & (uspi->s_bsize - 1)) {
+		printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n",
+			uspi->s_bsize);
+		goto failed;
+	}
+	if (uspi->s_bsize < 4096) {
+		printk(KERN_ERR "ufs_read_super: block size %u is too small\n",
+			uspi->s_bsize);
+		goto failed;
+	}
+	if (uspi->s_bsize / uspi->s_fsize > 8) {
+		printk(KERN_ERR "ufs_read_super: too many fragments per block (%u)\n",
+			uspi->s_bsize / uspi->s_fsize);
+		goto failed;
+	}
+	if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) {
+		ubh_brelse_uspi(uspi);
+		ubh = NULL;
+		block_size = uspi->s_fsize;
+		super_block_size = uspi->s_sbsize;
+		UFSD(("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size))
+		goto again;
+	}
+
+#ifdef UFS_SUPER_DEBUG_MORE
+        if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
+		ufs2_print_super_stuff(sb,usb);
+        else
+		ufs_print_super_stuff(sb, usb1, usb2, usb3);
+#endif
+
+	/*
+	 * Check, if file system was correctly unmounted.
+	 * If not, make it read only.
+	 */
+	if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) ||
+	  ((flags & UFS_ST_MASK) == UFS_ST_OLD) ||
+	  (((flags & UFS_ST_MASK) == UFS_ST_SUN || 
+	  (flags & UFS_ST_MASK) == UFS_ST_SUNx86) && 
+	  (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) {
+		switch(usb1->fs_clean) {
+		case UFS_FSCLEAN:
+			UFSD(("fs is clean\n"))
+			break;
+		case UFS_FSSTABLE:
+			UFSD(("fs is stable\n"))
+			break;
+		case UFS_FSOSF1:
+			UFSD(("fs is DEC OSF/1\n"))
+			break;
+		case UFS_FSACTIVE:
+			printk("ufs_read_super: fs is active\n");
+			sb->s_flags |= MS_RDONLY;
+			break;
+		case UFS_FSBAD:
+			printk("ufs_read_super: fs is bad\n");
+			sb->s_flags |= MS_RDONLY;
+			break;
+		default:
+			printk("ufs_read_super: can't grok fs_clean 0x%x\n", usb1->fs_clean);
+			sb->s_flags |= MS_RDONLY;
+			break;
+		}
+	}
+	else {
+		printk("ufs_read_super: fs needs fsck\n");
+		sb->s_flags |= MS_RDONLY;
+	}
+
+	/*
+	 * Read ufs_super_block into internal data structures
+	 */
+	sb->s_op = &ufs_super_ops;
+	sb->dq_op = NULL; /***/
+	sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic);
+
+	uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno);
+	uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno);
+	uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno);
+	uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno);
+	uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset);
+	uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask);
+
+	if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
+		uspi->s_u2_size  = fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_size);
+		uspi->s_u2_dsize = fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_dsize);
+	}
+	else {
+		uspi->s_size  =  fs32_to_cpu(sb, usb1->fs_size);
+		uspi->s_dsize =  fs32_to_cpu(sb, usb1->fs_dsize);
+	}
+
+	uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg);
+	/* s_bsize already set */
+	/* s_fsize already set */
+	uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag);
+	uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree);
+	uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask);
+	uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask);
+	uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift);
+	uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift);
+	UFSD(("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift,
+		uspi->s_fshift));
+	uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift);
+	uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb);
+	/* s_sbsize already set */
+	uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask);
+	uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift);
+	uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir);
+	uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb);
+	uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf);
+	uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3);
+	uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave);
+	uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew);
+	uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr);
+	uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize);
+	uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize);
+	uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak);
+	uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect);
+	uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc);
+	uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg);
+	uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg);
+	uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_cpc);
+	uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_contigsumsize);
+	uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3);
+	uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3);
+	uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat);
+	uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos);
+	uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff);
+	uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff);
+
+	/*
+	 * Compute another frequently used values
+	 */
+	uspi->s_fpbmask = uspi->s_fpb - 1;
+	if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
+		uspi->s_apbshift = uspi->s_bshift - 3;
+	}
+	else {
+		uspi->s_apbshift = uspi->s_bshift - 2;
+	}
+	uspi->s_2apbshift = uspi->s_apbshift * 2;
+	uspi->s_3apbshift = uspi->s_apbshift * 3;
+	uspi->s_apb = 1 << uspi->s_apbshift;
+	uspi->s_2apb = 1 << uspi->s_2apbshift;
+	uspi->s_3apb = 1 << uspi->s_3apbshift;
+	uspi->s_apbmask = uspi->s_apb - 1;
+	uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS;
+	uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift;
+	uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift;
+	uspi->s_bpf = uspi->s_fsize << 3;
+	uspi->s_bpfshift = uspi->s_fshift + 3;
+	uspi->s_bpfmask = uspi->s_bpf - 1;
+	if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) ==
+	    UFS_MOUNT_UFSTYPE_44BSD)
+		uspi->s_maxsymlinklen =
+		    fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_maxsymlinklen);
+	
+	sbi->s_flags = flags;
+
+	inode = iget(sb, UFS_ROOTINO);
+	if (!inode || is_bad_inode(inode))
+		goto failed;
+	sb->s_root = d_alloc_root(inode);
+	if (!sb->s_root)
+		goto dalloc_failed;
+
+
+	/*
+	 * Read cylinder group structures
+	 */
+	if (!(sb->s_flags & MS_RDONLY))
+		if (!ufs_read_cylinder_structures(sb))
+			goto failed;
+
+	UFSD(("EXIT\n"))
+	return 0;
+
+dalloc_failed:
+	iput(inode);
+failed:
+	if (ubh) ubh_brelse_uspi (uspi);
+	if (uspi) kfree (uspi);
+	if (sbi) kfree(sbi);
+	sb->s_fs_info = NULL;
+	UFSD(("EXIT (FAILED)\n"))
+	return -EINVAL;
+
+failed_nomem:
+	UFSD(("EXIT (NOMEM)\n"))
+	return -ENOMEM;
+}
+
+static void ufs_write_super (struct super_block *sb) {
+	struct ufs_sb_private_info * uspi;
+	struct ufs_super_block_first * usb1;
+	struct ufs_super_block_third * usb3;
+	unsigned flags;
+
+	lock_kernel();
+
+	UFSD(("ENTER\n"))
+	flags = UFS_SB(sb)->s_flags;
+	uspi = UFS_SB(sb)->s_uspi;
+	usb1 = ubh_get_usb_first(USPI_UBH);
+	usb3 = ubh_get_usb_third(USPI_UBH);
+
+	if (!(sb->s_flags & MS_RDONLY)) {
+		usb1->fs_time = cpu_to_fs32(sb, get_seconds());
+		if ((flags & UFS_ST_MASK) == UFS_ST_SUN 
+		  || (flags & UFS_ST_MASK) == UFS_ST_SUNx86)
+			ufs_set_fs_state(sb, usb1, usb3,
+					UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
+		ubh_mark_buffer_dirty (USPI_UBH);
+	}
+	sb->s_dirt = 0;
+	UFSD(("EXIT\n"))
+	unlock_kernel();
+}
+
+static void ufs_put_super (struct super_block *sb)
+{
+	struct ufs_sb_info * sbi = UFS_SB(sb);
+		
+	UFSD(("ENTER\n"))
+
+	if (!(sb->s_flags & MS_RDONLY))
+		ufs_put_cylinder_structures (sb);
+	
+	ubh_brelse_uspi (sbi->s_uspi);
+	kfree (sbi->s_uspi);
+	kfree (sbi);
+	sb->s_fs_info = NULL;
+	return;
+}
+
+
+static int ufs_remount (struct super_block *sb, int *mount_flags, char *data)
+{
+	struct ufs_sb_private_info * uspi;
+	struct ufs_super_block_first * usb1;
+	struct ufs_super_block_third * usb3;
+	unsigned new_mount_opt, ufstype;
+	unsigned flags;
+	
+	uspi = UFS_SB(sb)->s_uspi;
+	flags = UFS_SB(sb)->s_flags;
+	usb1 = ubh_get_usb_first(USPI_UBH);
+	usb3 = ubh_get_usb_third(USPI_UBH);
+	
+	/*
+	 * Allow the "check" option to be passed as a remount option.
+	 * It is not possible to change ufstype option during remount
+	 */
+	ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
+	new_mount_opt = 0;
+	ufs_set_opt (new_mount_opt, ONERROR_LOCK);
+	if (!ufs_parse_options (data, &new_mount_opt))
+		return -EINVAL;
+	if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
+		new_mount_opt |= ufstype;
+	}
+	else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
+		printk("ufstype can't be changed during remount\n");
+		return -EINVAL;
+	}
+
+	if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
+		UFS_SB(sb)->s_mount_opt = new_mount_opt;
+		return 0;
+	}
+	
+	/*
+	 * fs was mouted as rw, remounting ro
+	 */
+	if (*mount_flags & MS_RDONLY) {
+		ufs_put_cylinder_structures(sb);
+		usb1->fs_time = cpu_to_fs32(sb, get_seconds());
+		if ((flags & UFS_ST_MASK) == UFS_ST_SUN
+		  || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) 
+			ufs_set_fs_state(sb, usb1, usb3,
+				UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
+		ubh_mark_buffer_dirty (USPI_UBH);
+		sb->s_dirt = 0;
+		sb->s_flags |= MS_RDONLY;
+	}
+	/*
+	 * fs was mounted as ro, remounting rw
+	 */
+	else {
+#ifndef CONFIG_UFS_FS_WRITE
+		printk("ufs was compiled with read-only support, "
+		"can't be mounted as read-write\n");
+		return -EINVAL;
+#else
+		if (ufstype != UFS_MOUNT_UFSTYPE_SUN && 
+		    ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
+		    ufstype != UFS_MOUNT_UFSTYPE_SUNx86) {
+			printk("this ufstype is read-only supported\n");
+			return -EINVAL;
+		}
+		if (!ufs_read_cylinder_structures (sb)) {
+			printk("failed during remounting\n");
+			return -EPERM;
+		}
+		sb->s_flags &= ~MS_RDONLY;
+#endif
+	}
+	UFS_SB(sb)->s_mount_opt = new_mount_opt;
+	return 0;
+}
+
+static int ufs_statfs (struct super_block *sb, struct kstatfs *buf)
+{
+	struct ufs_sb_private_info * uspi;
+	struct ufs_super_block_first * usb1;
+	struct ufs_super_block * usb;
+	unsigned  flags = 0;
+
+	lock_kernel();
+
+	uspi = UFS_SB(sb)->s_uspi;
+	usb1 = ubh_get_usb_first (USPI_UBH);
+	usb  = (struct ufs_super_block *)
+		((struct ufs_buffer_head *)uspi)->bh[0]->b_data ;
+	
+	flags = UFS_SB(sb)->s_flags;
+	if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
+		buf->f_type = UFS2_MAGIC;
+		buf->f_blocks = fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_dsize);
+		buf->f_bfree = ufs_blkstofrags(fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_cstotal.cs_nbfree)) +
+			fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_cstotal.cs_nffree);
+		buf->f_ffree = fs64_to_cpu(sb,
+        		usb->fs_u11.fs_u2.fs_cstotal.cs_nifree);
+	}
+	else {
+		buf->f_type = UFS_MAGIC;
+		buf->f_blocks = uspi->s_dsize;
+		buf->f_bfree = ufs_blkstofrags(fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)) +
+			fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
+		buf->f_ffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
+	}
+	buf->f_bsize = sb->s_blocksize;
+	buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree))
+		? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0;
+	buf->f_files = uspi->s_ncg * uspi->s_ipg;
+	buf->f_namelen = UFS_MAXNAMLEN;
+
+	unlock_kernel();
+
+	return 0;
+}
+
+static kmem_cache_t * ufs_inode_cachep;
+
+static struct inode *ufs_alloc_inode(struct super_block *sb)
+{
+	struct ufs_inode_info *ei;
+	ei = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, SLAB_KERNEL);
+	if (!ei)
+		return NULL;
+	ei->vfs_inode.i_version = 1;
+	return &ei->vfs_inode;
+}
+
+static void ufs_destroy_inode(struct inode *inode)
+{
+	kmem_cache_free(ufs_inode_cachep, UFS_I(inode));
+}
+
+static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
+{
+	struct ufs_inode_info *ei = (struct ufs_inode_info *) foo;
+
+	if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
+	    SLAB_CTOR_CONSTRUCTOR)
+		inode_init_once(&ei->vfs_inode);
+}
+ 
+static int init_inodecache(void)
+{
+	ufs_inode_cachep = kmem_cache_create("ufs_inode_cache",
+					     sizeof(struct ufs_inode_info),
+					     0, SLAB_RECLAIM_ACCOUNT,
+					     init_once, NULL);
+	if (ufs_inode_cachep == NULL)
+		return -ENOMEM;
+	return 0;
+}
+
+static void destroy_inodecache(void)
+{
+	if (kmem_cache_destroy(ufs_inode_cachep))
+		printk(KERN_INFO "ufs_inode_cache: not all structures were freed\n");
+}
+
+#ifdef CONFIG_QUOTA
+static ssize_t ufs_quota_read(struct super_block *, int, char *,size_t, loff_t);
+static ssize_t ufs_quota_write(struct super_block *, int, const char *, size_t, loff_t);
+#endif
+
+static struct super_operations ufs_super_ops = {
+	.alloc_inode	= ufs_alloc_inode,
+	.destroy_inode	= ufs_destroy_inode,
+	.read_inode	= ufs_read_inode,
+	.write_inode	= ufs_write_inode,
+	.delete_inode	= ufs_delete_inode,
+	.put_super	= ufs_put_super,
+	.write_super	= ufs_write_super,
+	.statfs		= ufs_statfs,
+	.remount_fs	= ufs_remount,
+#ifdef CONFIG_QUOTA
+	.quota_read	= ufs_quota_read,
+	.quota_write	= ufs_quota_write,
+#endif
+};
+
+#ifdef CONFIG_QUOTA
+
+/* Read data from quotafile - avoid pagecache and such because we cannot afford
+ * acquiring the locks... As quota files are never truncated and quota code
+ * itself serializes the operations (and noone else should touch the files)
+ * we don't have to be afraid of races */
+static ssize_t ufs_quota_read(struct super_block *sb, int type, char *data,
+			       size_t len, loff_t off)
+{
+	struct inode *inode = sb_dqopt(sb)->files[type];
+	sector_t blk = off >> sb->s_blocksize_bits;
+	int err = 0;
+	int offset = off & (sb->s_blocksize - 1);
+	int tocopy;
+	size_t toread;
+	struct buffer_head *bh;
+	loff_t i_size = i_size_read(inode);
+
+	if (off > i_size)
+		return 0;
+	if (off+len > i_size)
+		len = i_size-off;
+	toread = len;
+	while (toread > 0) {
+		tocopy = sb->s_blocksize - offset < toread ?
+				sb->s_blocksize - offset : toread;
+
+		bh = ufs_bread(inode, blk, 0, &err);
+		if (err)
+			return err;
+		if (!bh)	/* A hole? */
+			memset(data, 0, tocopy);
+		else {
+			memcpy(data, bh->b_data+offset, tocopy);
+			brelse(bh);
+		}
+		offset = 0;
+		toread -= tocopy;
+		data += tocopy;
+		blk++;
+	}
+	return len;
+}
+
+/* Write to quotafile */
+static ssize_t ufs_quota_write(struct super_block *sb, int type,
+				const char *data, size_t len, loff_t off)
+{
+	struct inode *inode = sb_dqopt(sb)->files[type];
+	sector_t blk = off >> sb->s_blocksize_bits;
+	int err = 0;
+	int offset = off & (sb->s_blocksize - 1);
+	int tocopy;
+	size_t towrite = len;
+	struct buffer_head *bh;
+
+	down(&inode->i_sem);
+	while (towrite > 0) {
+		tocopy = sb->s_blocksize - offset < towrite ?
+				sb->s_blocksize - offset : towrite;
+
+		bh = ufs_bread(inode, blk, 1, &err);
+		if (!bh)
+			goto out;
+		lock_buffer(bh);
+		memcpy(bh->b_data+offset, data, tocopy);
+		flush_dcache_page(bh->b_page);
+		set_buffer_uptodate(bh);
+		mark_buffer_dirty(bh);
+		unlock_buffer(bh);
+		brelse(bh);
+		offset = 0;
+		towrite -= tocopy;
+		data += tocopy;
+		blk++;
+	}
+out:
+	if (len == towrite)
+		return err;
+	if (inode->i_size < off+len-towrite)
+		i_size_write(inode, off+len-towrite);
+	inode->i_version++;
+	inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
+	mark_inode_dirty(inode);
+	up(&inode->i_sem);
+	return len - towrite;
+}
+
+#endif
+
+static struct super_block *ufs_get_sb(struct file_system_type *fs_type,
+	int flags, const char *dev_name, void *data)
+{
+	return get_sb_bdev(fs_type, flags, dev_name, data, ufs_fill_super);
+}
+
+static struct file_system_type ufs_fs_type = {
+	.owner		= THIS_MODULE,
+	.name		= "ufs",
+	.get_sb		= ufs_get_sb,
+	.kill_sb	= kill_block_super,
+	.fs_flags	= FS_REQUIRES_DEV,
+};
+
+static int __init init_ufs_fs(void)
+{
+	int err = init_inodecache();
+	if (err)
+		goto out1;
+	err = register_filesystem(&ufs_fs_type);
+	if (err)
+		goto out;
+	return 0;
+out:
+	destroy_inodecache();
+out1:
+	return err;
+}
+
+static void __exit exit_ufs_fs(void)
+{
+	unregister_filesystem(&ufs_fs_type);
+	destroy_inodecache();
+}
+
+module_init(init_ufs_fs)
+module_exit(exit_ufs_fs)
+MODULE_LICENSE("GPL");