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6d1349c769
Get rid of boilerplate in most of ->statfs() instances... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
1545 lines
44 KiB
C
1545 lines
44 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* linux/fs/ufs/super.c
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*
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* Copyright (C) 1998
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* Daniel Pirkl <daniel.pirkl@email.cz>
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* Charles University, Faculty of Mathematics and Physics
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*/
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/* Derived from
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*
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* linux/fs/ext2/super.c
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*
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* Copyright (C) 1992, 1993, 1994, 1995
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* Remy Card (card@masi.ibp.fr)
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* Laboratoire MASI - Institut Blaise Pascal
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* Universite Pierre et Marie Curie (Paris VI)
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*
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* from
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*
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* linux/fs/minix/inode.c
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*
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* Copyright (C) 1991, 1992 Linus Torvalds
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*
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* Big-endian to little-endian byte-swapping/bitmaps by
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* David S. Miller (davem@caip.rutgers.edu), 1995
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*/
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/*
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* Inspired by
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*
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* linux/fs/ufs/super.c
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*
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* Copyright (C) 1996
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* Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
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* Laboratory for Computer Science Research Computing Facility
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* Rutgers, The State University of New Jersey
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*
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* Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
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*
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* Kernel module support added on 96/04/26 by
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* Stefan Reinauer <stepan@home.culture.mipt.ru>
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*
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* Module usage counts added on 96/04/29 by
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* Gertjan van Wingerde <gwingerde@gmail.com>
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*
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* Clean swab support on 19970406 by
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* Francois-Rene Rideau <fare@tunes.org>
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*
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* 4.4BSD (FreeBSD) support added on February 1st 1998 by
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* Niels Kristian Bech Jensen <nkbj@image.dk> partially based
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* on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>.
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*
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* NeXTstep support added on February 5th 1998 by
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* Niels Kristian Bech Jensen <nkbj@image.dk>.
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*
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* write support Daniel Pirkl <daniel.pirkl@email.cz> 1998
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*
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* HP/UX hfs filesystem support added by
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* Martin K. Petersen <mkp@mkp.net>, August 1999
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*
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* UFS2 (of FreeBSD 5.x) support added by
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* Niraj Kumar <niraj17@iitbombay.org>, Jan 2004
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*
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* UFS2 write support added by
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* Evgeniy Dushistov <dushistov@mail.ru>, 2007
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*/
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#include <linux/exportfs.h>
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#include <linux/module.h>
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#include <linux/bitops.h>
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#include <stdarg.h>
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#include <linux/uaccess.h>
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#include <linux/errno.h>
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#include <linux/fs.h>
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#include <linux/slab.h>
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#include <linux/time.h>
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#include <linux/stat.h>
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#include <linux/string.h>
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#include <linux/blkdev.h>
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#include <linux/backing-dev.h>
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#include <linux/init.h>
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#include <linux/parser.h>
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#include <linux/buffer_head.h>
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#include <linux/vfs.h>
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#include <linux/log2.h>
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#include <linux/mount.h>
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#include <linux/seq_file.h>
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#include <linux/iversion.h>
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#include "ufs_fs.h"
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#include "ufs.h"
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#include "swab.h"
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#include "util.h"
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static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation)
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{
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struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
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struct inode *inode;
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if (ino < UFS_ROOTINO || ino > (u64)uspi->s_ncg * uspi->s_ipg)
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return ERR_PTR(-ESTALE);
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inode = ufs_iget(sb, ino);
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if (IS_ERR(inode))
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return ERR_CAST(inode);
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if (generation && inode->i_generation != generation) {
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iput(inode);
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return ERR_PTR(-ESTALE);
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}
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return inode;
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}
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static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid,
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int fh_len, int fh_type)
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{
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return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
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}
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static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid,
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int fh_len, int fh_type)
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{
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return generic_fh_to_parent(sb, fid, fh_len, fh_type, ufs_nfs_get_inode);
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}
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static struct dentry *ufs_get_parent(struct dentry *child)
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{
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struct qstr dot_dot = QSTR_INIT("..", 2);
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ino_t ino;
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ino = ufs_inode_by_name(d_inode(child), &dot_dot);
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if (!ino)
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return ERR_PTR(-ENOENT);
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return d_obtain_alias(ufs_iget(child->d_sb, ino));
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}
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static const struct export_operations ufs_export_ops = {
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.fh_to_dentry = ufs_fh_to_dentry,
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.fh_to_parent = ufs_fh_to_parent,
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.get_parent = ufs_get_parent,
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};
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#ifdef CONFIG_UFS_DEBUG
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/*
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* Print contents of ufs_super_block, useful for debugging
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*/
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static void ufs_print_super_stuff(struct super_block *sb,
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struct ufs_super_block_first *usb1,
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struct ufs_super_block_second *usb2,
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struct ufs_super_block_third *usb3)
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{
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u32 magic = fs32_to_cpu(sb, usb3->fs_magic);
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pr_debug("ufs_print_super_stuff\n");
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pr_debug(" magic: 0x%x\n", magic);
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if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) {
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pr_debug(" fs_size: %llu\n", (unsigned long long)
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fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
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pr_debug(" fs_dsize: %llu\n", (unsigned long long)
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fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize));
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pr_debug(" bsize: %u\n",
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fs32_to_cpu(sb, usb1->fs_bsize));
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pr_debug(" fsize: %u\n",
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fs32_to_cpu(sb, usb1->fs_fsize));
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pr_debug(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname);
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pr_debug(" fs_sblockloc: %llu\n", (unsigned long long)
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fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc));
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pr_debug(" cs_ndir(No of dirs): %llu\n", (unsigned long long)
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fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir));
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pr_debug(" cs_nbfree(No of free blocks): %llu\n",
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(unsigned long long)
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fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
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pr_info(" cs_nifree(Num of free inodes): %llu\n",
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(unsigned long long)
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fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree));
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pr_info(" cs_nffree(Num of free frags): %llu\n",
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(unsigned long long)
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fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree));
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pr_info(" fs_maxsymlinklen: %u\n",
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fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen));
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} else {
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pr_debug(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
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pr_debug(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
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pr_debug(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
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pr_debug(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
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pr_debug(" cgoffset: %u\n",
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fs32_to_cpu(sb, usb1->fs_cgoffset));
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pr_debug(" ~cgmask: 0x%x\n",
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~fs32_to_cpu(sb, usb1->fs_cgmask));
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pr_debug(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size));
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pr_debug(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
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pr_debug(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
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pr_debug(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
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pr_debug(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
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pr_debug(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag));
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pr_debug(" fragshift: %u\n",
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fs32_to_cpu(sb, usb1->fs_fragshift));
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pr_debug(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
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pr_debug(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
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pr_debug(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
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pr_debug(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc));
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pr_debug(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
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pr_debug(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
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pr_debug(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
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pr_debug(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
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pr_debug(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
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pr_debug(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
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pr_debug(" fstodb: %u\n",
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fs32_to_cpu(sb, usb1->fs_fsbtodb));
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pr_debug(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
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pr_debug(" ndir %u\n",
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fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
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pr_debug(" nifree %u\n",
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fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
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pr_debug(" nbfree %u\n",
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fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
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pr_debug(" nffree %u\n",
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fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
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}
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pr_debug("\n");
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}
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/*
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* Print contents of ufs_cylinder_group, useful for debugging
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*/
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static void ufs_print_cylinder_stuff(struct super_block *sb,
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struct ufs_cylinder_group *cg)
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{
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pr_debug("\nufs_print_cylinder_stuff\n");
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pr_debug("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group));
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pr_debug(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic));
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pr_debug(" time: %u\n", fs32_to_cpu(sb, cg->cg_time));
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pr_debug(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx));
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pr_debug(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl));
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pr_debug(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk));
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pr_debug(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk));
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pr_debug(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir));
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pr_debug(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree));
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pr_debug(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree));
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pr_debug(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree));
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pr_debug(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor));
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pr_debug(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor));
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pr_debug(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor));
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pr_debug(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n",
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fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]),
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fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]),
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fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]),
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fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7]));
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pr_debug(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff));
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pr_debug(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff));
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pr_debug(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff));
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pr_debug(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff));
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pr_debug(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff));
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pr_debug(" clustersumoff %u\n",
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fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff));
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pr_debug(" clusteroff %u\n",
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fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff));
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pr_debug(" nclusterblks %u\n",
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fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks));
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pr_debug("\n");
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}
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#else
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# define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/
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# define ufs_print_cylinder_stuff(sb, cg) /**/
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#endif /* CONFIG_UFS_DEBUG */
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static const struct super_operations ufs_super_ops;
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void ufs_error (struct super_block * sb, const char * function,
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const char * fmt, ...)
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{
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struct ufs_sb_private_info * uspi;
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struct ufs_super_block_first * usb1;
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struct va_format vaf;
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va_list args;
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uspi = UFS_SB(sb)->s_uspi;
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usb1 = ubh_get_usb_first(uspi);
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if (!sb_rdonly(sb)) {
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usb1->fs_clean = UFS_FSBAD;
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ubh_mark_buffer_dirty(USPI_UBH(uspi));
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ufs_mark_sb_dirty(sb);
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sb->s_flags |= SB_RDONLY;
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}
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va_start(args, fmt);
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vaf.fmt = fmt;
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vaf.va = &args;
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switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) {
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case UFS_MOUNT_ONERROR_PANIC:
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panic("panic (device %s): %s: %pV\n",
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sb->s_id, function, &vaf);
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case UFS_MOUNT_ONERROR_LOCK:
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case UFS_MOUNT_ONERROR_UMOUNT:
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case UFS_MOUNT_ONERROR_REPAIR:
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pr_crit("error (device %s): %s: %pV\n",
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sb->s_id, function, &vaf);
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}
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va_end(args);
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}
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void ufs_panic (struct super_block * sb, const char * function,
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const char * fmt, ...)
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{
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struct ufs_sb_private_info * uspi;
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struct ufs_super_block_first * usb1;
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struct va_format vaf;
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va_list args;
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uspi = UFS_SB(sb)->s_uspi;
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usb1 = ubh_get_usb_first(uspi);
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if (!sb_rdonly(sb)) {
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usb1->fs_clean = UFS_FSBAD;
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ubh_mark_buffer_dirty(USPI_UBH(uspi));
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ufs_mark_sb_dirty(sb);
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}
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va_start(args, fmt);
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vaf.fmt = fmt;
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vaf.va = &args;
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sb->s_flags |= SB_RDONLY;
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pr_crit("panic (device %s): %s: %pV\n",
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sb->s_id, function, &vaf);
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va_end(args);
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}
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void ufs_warning (struct super_block * sb, const char * function,
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const char * fmt, ...)
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{
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struct va_format vaf;
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va_list args;
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va_start(args, fmt);
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vaf.fmt = fmt;
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vaf.va = &args;
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pr_warn("(device %s): %s: %pV\n",
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sb->s_id, function, &vaf);
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va_end(args);
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}
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enum {
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Opt_type_old = UFS_MOUNT_UFSTYPE_OLD,
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Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86,
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Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN,
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Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS,
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Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD,
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Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2,
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Opt_type_hp = UFS_MOUNT_UFSTYPE_HP,
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Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD,
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Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP,
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Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP,
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Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC,
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Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK,
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Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT,
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Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR,
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Opt_err
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};
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static const match_table_t tokens = {
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{Opt_type_old, "ufstype=old"},
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{Opt_type_sunx86, "ufstype=sunx86"},
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{Opt_type_sun, "ufstype=sun"},
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{Opt_type_sunos, "ufstype=sunos"},
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{Opt_type_44bsd, "ufstype=44bsd"},
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{Opt_type_ufs2, "ufstype=ufs2"},
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{Opt_type_ufs2, "ufstype=5xbsd"},
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{Opt_type_hp, "ufstype=hp"},
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{Opt_type_nextstepcd, "ufstype=nextstep-cd"},
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{Opt_type_nextstep, "ufstype=nextstep"},
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{Opt_type_openstep, "ufstype=openstep"},
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/*end of possible ufs types */
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{Opt_onerror_panic, "onerror=panic"},
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{Opt_onerror_lock, "onerror=lock"},
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{Opt_onerror_umount, "onerror=umount"},
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{Opt_onerror_repair, "onerror=repair"},
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{Opt_err, NULL}
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};
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|
|
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_sunos:
|
|
ufs_clear_opt(*mount_options, UFSTYPE);
|
|
ufs_set_opt(*mount_options, UFSTYPE_SUNOS);
|
|
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:
|
|
pr_err("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:
|
|
pr_err("Invalid option: \"%s\" or missing value\n", p);
|
|
return 0;
|
|
}
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Different types of UFS hold fs_cstotal in different
|
|
* places, and use different data structure for it.
|
|
* To make things simpler we just copy fs_cstotal to ufs_sb_private_info
|
|
*/
|
|
static void ufs_setup_cstotal(struct super_block *sb)
|
|
{
|
|
struct ufs_sb_info *sbi = UFS_SB(sb);
|
|
struct ufs_sb_private_info *uspi = sbi->s_uspi;
|
|
struct ufs_super_block_first *usb1;
|
|
struct ufs_super_block_second *usb2;
|
|
struct ufs_super_block_third *usb3;
|
|
unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
|
|
|
|
UFSD("ENTER, mtype=%u\n", mtype);
|
|
usb1 = ubh_get_usb_first(uspi);
|
|
usb2 = ubh_get_usb_second(uspi);
|
|
usb3 = ubh_get_usb_third(uspi);
|
|
|
|
if ((mtype == UFS_MOUNT_UFSTYPE_44BSD &&
|
|
(usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) ||
|
|
mtype == UFS_MOUNT_UFSTYPE_UFS2) {
|
|
/*we have statistic in different place, then usual*/
|
|
uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir);
|
|
uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree);
|
|
uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree);
|
|
uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree);
|
|
} else {
|
|
uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir);
|
|
uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree);
|
|
uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
|
|
uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
|
|
}
|
|
UFSD("EXIT\n");
|
|
}
|
|
|
|
/*
|
|
* 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 = sbi->s_uspi;
|
|
struct ufs_buffer_head * ubh;
|
|
unsigned char * base, * space;
|
|
unsigned size, blks, i;
|
|
|
|
UFSD("ENTER\n");
|
|
|
|
/*
|
|
* 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_NOFS);
|
|
if (!base)
|
|
goto failed;
|
|
sbi->s_csp = (struct ufs_csum *)space;
|
|
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);
|
|
|
|
if (!ubh)
|
|
goto failed;
|
|
|
|
ubh_ubhcpymem (space, ubh, size);
|
|
|
|
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.
|
|
*/
|
|
sbi->s_ucg = kmalloc_array(uspi->s_ncg, sizeof(struct buffer_head *),
|
|
GFP_NOFS);
|
|
if (!sbi->s_ucg)
|
|
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;
|
|
|
|
ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data);
|
|
}
|
|
for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
|
|
if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS)))
|
|
goto failed;
|
|
sbi->s_cgno[i] = UFS_CGNO_EMPTY;
|
|
}
|
|
sbi->s_cg_loaded = 0;
|
|
UFSD("EXIT\n");
|
|
return 1;
|
|
|
|
failed:
|
|
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++)
|
|
kfree (sbi->s_ucpi[i]);
|
|
}
|
|
UFSD("EXIT (FAILED)\n");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Sync our internal copy of fs_cstotal with disk
|
|
*/
|
|
static void ufs_put_cstotal(struct super_block *sb)
|
|
{
|
|
unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE;
|
|
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
|
|
struct ufs_super_block_first *usb1;
|
|
struct ufs_super_block_second *usb2;
|
|
struct ufs_super_block_third *usb3;
|
|
|
|
UFSD("ENTER\n");
|
|
usb1 = ubh_get_usb_first(uspi);
|
|
usb2 = ubh_get_usb_second(uspi);
|
|
usb3 = ubh_get_usb_third(uspi);
|
|
|
|
if (mtype == UFS_MOUNT_UFSTYPE_UFS2) {
|
|
/*we have statistic in different place, then usual*/
|
|
usb2->fs_un.fs_u2.cs_ndir =
|
|
cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
|
|
usb2->fs_un.fs_u2.cs_nbfree =
|
|
cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
|
|
usb3->fs_un1.fs_u2.cs_nifree =
|
|
cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
|
|
usb3->fs_un1.fs_u2.cs_nffree =
|
|
cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
|
|
goto out;
|
|
}
|
|
|
|
if (mtype == UFS_MOUNT_UFSTYPE_44BSD &&
|
|
(usb2->fs_un.fs_u2.fs_maxbsize == usb1->fs_bsize)) {
|
|
/* store stats in both old and new places */
|
|
usb2->fs_un.fs_u2.cs_ndir =
|
|
cpu_to_fs64(sb, uspi->cs_total.cs_ndir);
|
|
usb2->fs_un.fs_u2.cs_nbfree =
|
|
cpu_to_fs64(sb, uspi->cs_total.cs_nbfree);
|
|
usb3->fs_un1.fs_u2.cs_nifree =
|
|
cpu_to_fs64(sb, uspi->cs_total.cs_nifree);
|
|
usb3->fs_un1.fs_u2.cs_nffree =
|
|
cpu_to_fs64(sb, uspi->cs_total.cs_nffree);
|
|
}
|
|
usb1->fs_cstotal.cs_ndir = cpu_to_fs32(sb, uspi->cs_total.cs_ndir);
|
|
usb1->fs_cstotal.cs_nbfree = cpu_to_fs32(sb, uspi->cs_total.cs_nbfree);
|
|
usb1->fs_cstotal.cs_nifree = cpu_to_fs32(sb, uspi->cs_total.cs_nifree);
|
|
usb1->fs_cstotal.cs_nffree = cpu_to_fs32(sb, uspi->cs_total.cs_nffree);
|
|
out:
|
|
ubh_mark_buffer_dirty(USPI_UBH(uspi));
|
|
ufs_print_super_stuff(sb, usb1, usb2, usb3);
|
|
UFSD("EXIT\n");
|
|
}
|
|
|
|
/**
|
|
* ufs_put_super_internal() - put on-disk intrenal structures
|
|
* @sb: pointer to super_block structure
|
|
* Put on-disk structures associated with cylinder groups
|
|
* and write them back to disk, also update cs_total on disk
|
|
*/
|
|
static void ufs_put_super_internal(struct super_block *sb)
|
|
{
|
|
struct ufs_sb_info *sbi = UFS_SB(sb);
|
|
struct ufs_sb_private_info *uspi = sbi->s_uspi;
|
|
struct ufs_buffer_head * ubh;
|
|
unsigned char * base, * space;
|
|
unsigned blks, size, i;
|
|
|
|
|
|
UFSD("ENTER\n");
|
|
|
|
ufs_put_cstotal(sb);
|
|
size = uspi->s_cssize;
|
|
blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
|
|
base = space = (char*) sbi->s_csp;
|
|
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_sync_fs(struct super_block *sb, int wait)
|
|
{
|
|
struct ufs_sb_private_info * uspi;
|
|
struct ufs_super_block_first * usb1;
|
|
struct ufs_super_block_third * usb3;
|
|
unsigned flags;
|
|
|
|
mutex_lock(&UFS_SB(sb)->s_lock);
|
|
|
|
UFSD("ENTER\n");
|
|
|
|
flags = UFS_SB(sb)->s_flags;
|
|
uspi = UFS_SB(sb)->s_uspi;
|
|
usb1 = ubh_get_usb_first(uspi);
|
|
usb3 = ubh_get_usb_third(uspi);
|
|
|
|
usb1->fs_time = ufs_get_seconds(sb);
|
|
if ((flags & UFS_ST_MASK) == UFS_ST_SUN ||
|
|
(flags & UFS_ST_MASK) == UFS_ST_SUNOS ||
|
|
(flags & UFS_ST_MASK) == UFS_ST_SUNx86)
|
|
ufs_set_fs_state(sb, usb1, usb3,
|
|
UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time));
|
|
ufs_put_cstotal(sb);
|
|
|
|
UFSD("EXIT\n");
|
|
mutex_unlock(&UFS_SB(sb)->s_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void delayed_sync_fs(struct work_struct *work)
|
|
{
|
|
struct ufs_sb_info *sbi;
|
|
|
|
sbi = container_of(work, struct ufs_sb_info, sync_work.work);
|
|
|
|
spin_lock(&sbi->work_lock);
|
|
sbi->work_queued = 0;
|
|
spin_unlock(&sbi->work_lock);
|
|
|
|
ufs_sync_fs(sbi->sb, 1);
|
|
}
|
|
|
|
void ufs_mark_sb_dirty(struct super_block *sb)
|
|
{
|
|
struct ufs_sb_info *sbi = UFS_SB(sb);
|
|
unsigned long delay;
|
|
|
|
spin_lock(&sbi->work_lock);
|
|
if (!sbi->work_queued) {
|
|
delay = msecs_to_jiffies(dirty_writeback_interval * 10);
|
|
queue_delayed_work(system_long_wq, &sbi->sync_work, delay);
|
|
sbi->work_queued = 1;
|
|
}
|
|
spin_unlock(&sbi->work_lock);
|
|
}
|
|
|
|
static void ufs_put_super(struct super_block *sb)
|
|
{
|
|
struct ufs_sb_info * sbi = UFS_SB(sb);
|
|
|
|
UFSD("ENTER\n");
|
|
|
|
if (!sb_rdonly(sb))
|
|
ufs_put_super_internal(sb);
|
|
cancel_delayed_work_sync(&sbi->sync_work);
|
|
|
|
ubh_brelse_uspi (sbi->s_uspi);
|
|
kfree (sbi->s_uspi);
|
|
kfree (sbi);
|
|
sb->s_fs_info = NULL;
|
|
UFSD("EXIT\n");
|
|
return;
|
|
}
|
|
|
|
static u64 ufs_max_bytes(struct super_block *sb)
|
|
{
|
|
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
|
|
int bits = uspi->s_apbshift;
|
|
u64 res;
|
|
|
|
if (bits > 21)
|
|
res = ~0ULL;
|
|
else
|
|
res = UFS_NDADDR + (1LL << bits) + (1LL << (2*bits)) +
|
|
(1LL << (3*bits));
|
|
|
|
if (res >= (MAX_LFS_FILESIZE >> uspi->s_bshift))
|
|
return MAX_LFS_FILESIZE;
|
|
return res << uspi->s_bshift;
|
|
}
|
|
|
|
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_buffer_head * ubh;
|
|
struct inode *inode;
|
|
unsigned block_size, super_block_size;
|
|
unsigned flags;
|
|
unsigned super_block_offset;
|
|
unsigned maxsymlen;
|
|
int ret = -EINVAL;
|
|
|
|
uspi = NULL;
|
|
ubh = NULL;
|
|
flags = 0;
|
|
|
|
UFSD("ENTER\n");
|
|
|
|
#ifndef CONFIG_UFS_FS_WRITE
|
|
if (!sb_rdonly(sb)) {
|
|
pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
|
|
return -EROFS;
|
|
}
|
|
#endif
|
|
|
|
sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL);
|
|
if (!sbi)
|
|
goto failed_nomem;
|
|
sb->s_fs_info = sbi;
|
|
sbi->sb = sb;
|
|
|
|
UFSD("flag %u\n", (int)(sb_rdonly(sb)));
|
|
|
|
mutex_init(&sbi->s_lock);
|
|
spin_lock_init(&sbi->work_lock);
|
|
INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs);
|
|
/*
|
|
* 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)) {
|
|
pr_err("wrong mount options\n");
|
|
goto failed;
|
|
}
|
|
if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) {
|
|
if (!silent)
|
|
pr_err("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|nextstep-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);
|
|
}
|
|
|
|
uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL);
|
|
sbi->s_uspi = uspi;
|
|
if (!uspi)
|
|
goto failed;
|
|
uspi->s_dirblksize = UFS_SECTOR_SIZE;
|
|
super_block_offset=UFS_SBLOCK;
|
|
|
|
sb->s_maxbytes = MAX_LFS_FILESIZE;
|
|
|
|
sb->s_time_gran = NSEC_PER_SEC;
|
|
sb->s_time_min = S32_MIN;
|
|
sb->s_time_max = S32_MAX;
|
|
|
|
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");
|
|
super_block_offset=SBLOCK_UFS2;
|
|
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;
|
|
sb->s_time_gran = 1;
|
|
sb->s_time_min = S64_MIN;
|
|
sb->s_time_max = S64_MAX;
|
|
flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
|
|
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 = 0; /* Not supported on disk */
|
|
flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN;
|
|
break;
|
|
|
|
case UFS_MOUNT_UFSTYPE_SUNOS:
|
|
UFSD("ufstype=sunos\n");
|
|
uspi->s_fsize = block_size = 1024;
|
|
uspi->s_fmask = ~(1024 - 1);
|
|
uspi->s_fshift = 10;
|
|
uspi->s_sbsize = 2048;
|
|
super_block_size = 2048;
|
|
uspi->s_sbbase = 0;
|
|
uspi->s_maxsymlinklen = 0; /* Not supported on disk */
|
|
flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | 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 = 0; /* Not supported on disk */
|
|
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_rdonly(sb)) {
|
|
if (!silent)
|
|
pr_info("ufstype=old is supported read-only\n");
|
|
sb->s_flags |= SB_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;
|
|
uspi->s_dirblksize = 1024;
|
|
flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
|
|
if (!sb_rdonly(sb)) {
|
|
if (!silent)
|
|
pr_info("ufstype=nextstep is supported read-only\n");
|
|
sb->s_flags |= SB_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;
|
|
uspi->s_dirblksize = 1024;
|
|
flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
|
|
if (!sb_rdonly(sb)) {
|
|
if (!silent)
|
|
pr_info("ufstype=nextstep-cd is supported read-only\n");
|
|
sb->s_flags |= SB_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;
|
|
uspi->s_dirblksize = 1024;
|
|
flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
|
|
if (!sb_rdonly(sb)) {
|
|
if (!silent)
|
|
pr_info("ufstype=openstep is supported read-only\n");
|
|
sb->s_flags |= SB_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_rdonly(sb)) {
|
|
if (!silent)
|
|
pr_info("ufstype=hp is supported read-only\n");
|
|
sb->s_flags |= SB_RDONLY;
|
|
}
|
|
break;
|
|
default:
|
|
if (!silent)
|
|
pr_err("unknown ufstype\n");
|
|
goto failed;
|
|
}
|
|
|
|
again:
|
|
if (!sb_set_blocksize(sb, block_size)) {
|
|
pr_err("failed to set blocksize\n");
|
|
goto failed;
|
|
}
|
|
|
|
/*
|
|
* read ufs super block from device
|
|
*/
|
|
|
|
ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size);
|
|
|
|
if (!ubh)
|
|
goto failed;
|
|
|
|
usb1 = ubh_get_usb_first(uspi);
|
|
usb2 = ubh_get_usb_second(uspi);
|
|
usb3 = ubh_get_usb_third(uspi);
|
|
|
|
/* Sort out mod used on SunOS 4.1.3 for fs_state */
|
|
uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat);
|
|
if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) &&
|
|
(uspi->s_postblformat != UFS_42POSTBLFMT)) {
|
|
flags &= ~UFS_ST_MASK;
|
|
flags |= UFS_ST_SUN;
|
|
}
|
|
|
|
if ((flags & UFS_ST_MASK) == UFS_ST_44BSD &&
|
|
uspi->s_postblformat == UFS_42POSTBLFMT) {
|
|
if (!silent)
|
|
pr_err("this is not a 44bsd filesystem");
|
|
goto failed;
|
|
}
|
|
|
|
/*
|
|
* Check ufs magic number
|
|
*/
|
|
sbi->s_bytesex = BYTESEX_LE;
|
|
switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) {
|
|
case UFS_MAGIC:
|
|
case UFS_MAGIC_BW:
|
|
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 UFS_MAGIC_BW:
|
|
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)
|
|
pr_err("%s(): bad magic number\n", __func__);
|
|
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 (!is_power_of_2(uspi->s_fsize)) {
|
|
pr_err("%s(): fragment size %u is not a power of 2\n",
|
|
__func__, uspi->s_fsize);
|
|
goto failed;
|
|
}
|
|
if (uspi->s_fsize < 512) {
|
|
pr_err("%s(): fragment size %u is too small\n",
|
|
__func__, uspi->s_fsize);
|
|
goto failed;
|
|
}
|
|
if (uspi->s_fsize > 4096) {
|
|
pr_err("%s(): fragment size %u is too large\n",
|
|
__func__, uspi->s_fsize);
|
|
goto failed;
|
|
}
|
|
if (!is_power_of_2(uspi->s_bsize)) {
|
|
pr_err("%s(): block size %u is not a power of 2\n",
|
|
__func__, uspi->s_bsize);
|
|
goto failed;
|
|
}
|
|
if (uspi->s_bsize < 4096) {
|
|
pr_err("%s(): block size %u is too small\n",
|
|
__func__, uspi->s_bsize);
|
|
goto failed;
|
|
}
|
|
if (uspi->s_bsize / uspi->s_fsize > 8) {
|
|
pr_err("%s(): too many fragments per block (%u)\n",
|
|
__func__, 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;
|
|
}
|
|
|
|
sbi->s_flags = flags;/*after that line some functions use s_flags*/
|
|
ufs_print_super_stuff(sb, usb1, usb2, usb3);
|
|
|
|
/*
|
|
* 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_SUNOS ||
|
|
(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_FSLOG:
|
|
UFSD("fs is logging fs\n");
|
|
break;
|
|
case UFS_FSOSF1:
|
|
UFSD("fs is DEC OSF/1\n");
|
|
break;
|
|
case UFS_FSACTIVE:
|
|
pr_err("%s(): fs is active\n", __func__);
|
|
sb->s_flags |= SB_RDONLY;
|
|
break;
|
|
case UFS_FSBAD:
|
|
pr_err("%s(): fs is bad\n", __func__);
|
|
sb->s_flags |= SB_RDONLY;
|
|
break;
|
|
default:
|
|
pr_err("%s(): can't grok fs_clean 0x%x\n",
|
|
__func__, usb1->fs_clean);
|
|
sb->s_flags |= SB_RDONLY;
|
|
break;
|
|
}
|
|
} else {
|
|
pr_err("%s(): fs needs fsck\n", __func__);
|
|
sb->s_flags |= SB_RDONLY;
|
|
}
|
|
|
|
/*
|
|
* Read ufs_super_block into internal data structures
|
|
*/
|
|
sb->s_op = &ufs_super_ops;
|
|
sb->s_export_op = &ufs_export_ops;
|
|
|
|
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_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size);
|
|
uspi->s_dsize = fs64_to_cpu(sb, usb3->fs_un1.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);
|
|
|
|
if (uspi->fs_magic == UFS2_MAGIC)
|
|
uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr);
|
|
else
|
|
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_un.fs_u1.fs_cpc);
|
|
uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize);
|
|
uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3);
|
|
uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3);
|
|
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);
|
|
|
|
uspi->s_root_blocks = mul_u64_u32_div(uspi->s_dsize,
|
|
uspi->s_minfree, 100);
|
|
if (uspi->s_minfree <= 5) {
|
|
uspi->s_time_to_space = ~0ULL;
|
|
uspi->s_space_to_time = 0;
|
|
usb1->fs_optim = cpu_to_fs32(sb, UFS_OPTSPACE);
|
|
} else {
|
|
uspi->s_time_to_space = (uspi->s_root_blocks / 2) + 1;
|
|
uspi->s_space_to_time = mul_u64_u32_div(uspi->s_dsize,
|
|
uspi->s_minfree - 2, 100) - 1;
|
|
}
|
|
|
|
/*
|
|
* 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 ||
|
|
(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2)
|
|
uspi->s_maxsymlinklen =
|
|
fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen);
|
|
|
|
if (uspi->fs_magic == UFS2_MAGIC)
|
|
maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR);
|
|
else
|
|
maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR);
|
|
if (uspi->s_maxsymlinklen > maxsymlen) {
|
|
ufs_warning(sb, __func__, "ufs_read_super: excessive maximum "
|
|
"fast symlink size (%u)\n", uspi->s_maxsymlinklen);
|
|
uspi->s_maxsymlinklen = maxsymlen;
|
|
}
|
|
sb->s_maxbytes = ufs_max_bytes(sb);
|
|
sb->s_max_links = UFS_LINK_MAX;
|
|
|
|
inode = ufs_iget(sb, UFS_ROOTINO);
|
|
if (IS_ERR(inode)) {
|
|
ret = PTR_ERR(inode);
|
|
goto failed;
|
|
}
|
|
sb->s_root = d_make_root(inode);
|
|
if (!sb->s_root) {
|
|
ret = -ENOMEM;
|
|
goto failed;
|
|
}
|
|
|
|
ufs_setup_cstotal(sb);
|
|
/*
|
|
* Read cylinder group structures
|
|
*/
|
|
if (!sb_rdonly(sb))
|
|
if (!ufs_read_cylinder_structures(sb))
|
|
goto failed;
|
|
|
|
UFSD("EXIT\n");
|
|
return 0;
|
|
|
|
failed:
|
|
if (ubh)
|
|
ubh_brelse_uspi (uspi);
|
|
kfree (uspi);
|
|
kfree(sbi);
|
|
sb->s_fs_info = NULL;
|
|
UFSD("EXIT (FAILED)\n");
|
|
return ret;
|
|
|
|
failed_nomem:
|
|
UFSD("EXIT (NOMEM)\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
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;
|
|
|
|
sync_filesystem(sb);
|
|
mutex_lock(&UFS_SB(sb)->s_lock);
|
|
uspi = UFS_SB(sb)->s_uspi;
|
|
flags = UFS_SB(sb)->s_flags;
|
|
usb1 = ubh_get_usb_first(uspi);
|
|
usb3 = ubh_get_usb_third(uspi);
|
|
|
|
/*
|
|
* 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)) {
|
|
mutex_unlock(&UFS_SB(sb)->s_lock);
|
|
return -EINVAL;
|
|
}
|
|
if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) {
|
|
new_mount_opt |= ufstype;
|
|
} else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) {
|
|
pr_err("ufstype can't be changed during remount\n");
|
|
mutex_unlock(&UFS_SB(sb)->s_lock);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if ((bool)(*mount_flags & SB_RDONLY) == sb_rdonly(sb)) {
|
|
UFS_SB(sb)->s_mount_opt = new_mount_opt;
|
|
mutex_unlock(&UFS_SB(sb)->s_lock);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* fs was mouted as rw, remounting ro
|
|
*/
|
|
if (*mount_flags & SB_RDONLY) {
|
|
ufs_put_super_internal(sb);
|
|
usb1->fs_time = ufs_get_seconds(sb);
|
|
if ((flags & UFS_ST_MASK) == UFS_ST_SUN
|
|
|| (flags & UFS_ST_MASK) == UFS_ST_SUNOS
|
|
|| (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(uspi));
|
|
sb->s_flags |= SB_RDONLY;
|
|
} else {
|
|
/*
|
|
* fs was mounted as ro, remounting rw
|
|
*/
|
|
#ifndef CONFIG_UFS_FS_WRITE
|
|
pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n");
|
|
mutex_unlock(&UFS_SB(sb)->s_lock);
|
|
return -EINVAL;
|
|
#else
|
|
if (ufstype != UFS_MOUNT_UFSTYPE_SUN &&
|
|
ufstype != UFS_MOUNT_UFSTYPE_SUNOS &&
|
|
ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
|
|
ufstype != UFS_MOUNT_UFSTYPE_SUNx86 &&
|
|
ufstype != UFS_MOUNT_UFSTYPE_UFS2) {
|
|
pr_err("this ufstype is read-only supported\n");
|
|
mutex_unlock(&UFS_SB(sb)->s_lock);
|
|
return -EINVAL;
|
|
}
|
|
if (!ufs_read_cylinder_structures(sb)) {
|
|
pr_err("failed during remounting\n");
|
|
mutex_unlock(&UFS_SB(sb)->s_lock);
|
|
return -EPERM;
|
|
}
|
|
sb->s_flags &= ~SB_RDONLY;
|
|
#endif
|
|
}
|
|
UFS_SB(sb)->s_mount_opt = new_mount_opt;
|
|
mutex_unlock(&UFS_SB(sb)->s_lock);
|
|
return 0;
|
|
}
|
|
|
|
static int ufs_show_options(struct seq_file *seq, struct dentry *root)
|
|
{
|
|
struct ufs_sb_info *sbi = UFS_SB(root->d_sb);
|
|
unsigned mval = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE;
|
|
const struct match_token *tp = tokens;
|
|
|
|
while (tp->token != Opt_onerror_panic && tp->token != mval)
|
|
++tp;
|
|
BUG_ON(tp->token == Opt_onerror_panic);
|
|
seq_printf(seq, ",%s", tp->pattern);
|
|
|
|
mval = sbi->s_mount_opt & UFS_MOUNT_ONERROR;
|
|
while (tp->token != Opt_err && tp->token != mval)
|
|
++tp;
|
|
BUG_ON(tp->token == Opt_err);
|
|
seq_printf(seq, ",%s", tp->pattern);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf)
|
|
{
|
|
struct super_block *sb = dentry->d_sb;
|
|
struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi;
|
|
unsigned flags = UFS_SB(sb)->s_flags;
|
|
u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
|
|
|
|
mutex_lock(&UFS_SB(sb)->s_lock);
|
|
|
|
if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
|
|
buf->f_type = UFS2_MAGIC;
|
|
else
|
|
buf->f_type = UFS_MAGIC;
|
|
|
|
buf->f_blocks = uspi->s_dsize;
|
|
buf->f_bfree = ufs_freefrags(uspi);
|
|
buf->f_ffree = uspi->cs_total.cs_nifree;
|
|
buf->f_bsize = sb->s_blocksize;
|
|
buf->f_bavail = (buf->f_bfree > uspi->s_root_blocks)
|
|
? (buf->f_bfree - uspi->s_root_blocks) : 0;
|
|
buf->f_files = uspi->s_ncg * uspi->s_ipg;
|
|
buf->f_namelen = UFS_MAXNAMLEN;
|
|
buf->f_fsid = u64_to_fsid(id);
|
|
|
|
mutex_unlock(&UFS_SB(sb)->s_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct kmem_cache * ufs_inode_cachep;
|
|
|
|
static struct inode *ufs_alloc_inode(struct super_block *sb)
|
|
{
|
|
struct ufs_inode_info *ei;
|
|
|
|
ei = kmem_cache_alloc(ufs_inode_cachep, GFP_NOFS);
|
|
if (!ei)
|
|
return NULL;
|
|
|
|
inode_set_iversion(&ei->vfs_inode, 1);
|
|
seqlock_init(&ei->meta_lock);
|
|
mutex_init(&ei->truncate_mutex);
|
|
return &ei->vfs_inode;
|
|
}
|
|
|
|
static void ufs_free_in_core_inode(struct inode *inode)
|
|
{
|
|
kmem_cache_free(ufs_inode_cachep, UFS_I(inode));
|
|
}
|
|
|
|
static void init_once(void *foo)
|
|
{
|
|
struct ufs_inode_info *ei = (struct ufs_inode_info *) foo;
|
|
|
|
inode_init_once(&ei->vfs_inode);
|
|
}
|
|
|
|
static int __init init_inodecache(void)
|
|
{
|
|
ufs_inode_cachep = kmem_cache_create_usercopy("ufs_inode_cache",
|
|
sizeof(struct ufs_inode_info), 0,
|
|
(SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD|
|
|
SLAB_ACCOUNT),
|
|
offsetof(struct ufs_inode_info, i_u1.i_symlink),
|
|
sizeof_field(struct ufs_inode_info,
|
|
i_u1.i_symlink),
|
|
init_once);
|
|
if (ufs_inode_cachep == NULL)
|
|
return -ENOMEM;
|
|
return 0;
|
|
}
|
|
|
|
static void destroy_inodecache(void)
|
|
{
|
|
/*
|
|
* Make sure all delayed rcu free inodes are flushed before we
|
|
* destroy cache.
|
|
*/
|
|
rcu_barrier();
|
|
kmem_cache_destroy(ufs_inode_cachep);
|
|
}
|
|
|
|
static const struct super_operations ufs_super_ops = {
|
|
.alloc_inode = ufs_alloc_inode,
|
|
.free_inode = ufs_free_in_core_inode,
|
|
.write_inode = ufs_write_inode,
|
|
.evict_inode = ufs_evict_inode,
|
|
.put_super = ufs_put_super,
|
|
.sync_fs = ufs_sync_fs,
|
|
.statfs = ufs_statfs,
|
|
.remount_fs = ufs_remount,
|
|
.show_options = ufs_show_options,
|
|
};
|
|
|
|
static struct dentry *ufs_mount(struct file_system_type *fs_type,
|
|
int flags, const char *dev_name, void *data)
|
|
{
|
|
return mount_bdev(fs_type, flags, dev_name, data, ufs_fill_super);
|
|
}
|
|
|
|
static struct file_system_type ufs_fs_type = {
|
|
.owner = THIS_MODULE,
|
|
.name = "ufs",
|
|
.mount = ufs_mount,
|
|
.kill_sb = kill_block_super,
|
|
.fs_flags = FS_REQUIRES_DEV,
|
|
};
|
|
MODULE_ALIAS_FS("ufs");
|
|
|
|
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");
|