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1543 lines
44 KiB
1543 lines
44 KiB
// 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 <[email protected]> |
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* Charles University, Faculty of Mathematics and Physics |
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*/ |
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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 ([email protected]) |
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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 ([email protected]), 1995 |
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*/ |
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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 ([email protected]) |
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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 ([email protected]) |
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* |
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* Kernel module support added on 96/04/26 by |
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* Stefan Reinauer <[email protected]> |
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* |
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* Module usage counts added on 96/04/29 by |
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* Gertjan van Wingerde <[email protected]> |
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* |
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* Clean swab support on 19970406 by |
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* Francois-Rene Rideau <[email protected]> |
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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 <[email protected]> partially based |
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* on code by Martin von Loewis <[email protected]>. |
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* |
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* NeXTstep support added on February 5th 1998 by |
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* Niels Kristian Bech Jensen <[email protected]>. |
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* |
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* write support Daniel Pirkl <[email protected]> 1998 |
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* |
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* HP/UX hfs filesystem support added by |
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* Martin K. Petersen <[email protected]>, August 1999 |
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* |
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* UFS2 (of FreeBSD 5.x) support added by |
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* Niraj Kumar <[email protected]>, Jan 2004 |
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* |
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* UFS2 write support added by |
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* Evgeniy Dushistov <[email protected]>, 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 <linux/stdarg.h> |
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|
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#include <linux/uaccess.h> |
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|
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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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|
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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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ino_t ino; |
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ino = ufs_inode_by_name(d_inode(child), &dotdot_name); |
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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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|
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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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/* |
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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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|
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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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|
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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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|
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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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|
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static int ufs_parse_options (char * options, unsigned * mount_options) |
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{ |
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char * p; |
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|
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UFSD("ENTER\n"); |
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|
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if (!options) |
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return 1; |
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|
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while ((p = strsep(&options, ",")) != NULL) { |
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substring_t args[MAX_OPT_ARGS]; |
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int token; |
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if (!*p) |
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continue; |
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|
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token = match_token(p, tokens, args); |
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switch (token) { |
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case Opt_type_old: |
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ufs_clear_opt (*mount_options, UFSTYPE); |
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ufs_set_opt (*mount_options, UFSTYPE_OLD); |
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break; |
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case Opt_type_sunx86: |
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ufs_clear_opt (*mount_options, UFSTYPE); |
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ufs_set_opt (*mount_options, UFSTYPE_SUNx86); |
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break; |
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case Opt_type_sun: |
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ufs_clear_opt (*mount_options, UFSTYPE); |
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ufs_set_opt (*mount_options, UFSTYPE_SUN); |
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break; |
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case Opt_type_sunos: |
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ufs_clear_opt(*mount_options, UFSTYPE); |
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ufs_set_opt(*mount_options, UFSTYPE_SUNOS); |
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break; |
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case Opt_type_44bsd: |
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ufs_clear_opt (*mount_options, UFSTYPE); |
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ufs_set_opt (*mount_options, UFSTYPE_44BSD); |
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break; |
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case Opt_type_ufs2: |
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ufs_clear_opt(*mount_options, UFSTYPE); |
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ufs_set_opt(*mount_options, UFSTYPE_UFS2); |
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break; |
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case Opt_type_hp: |
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ufs_clear_opt (*mount_options, UFSTYPE); |
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ufs_set_opt (*mount_options, UFSTYPE_HP); |
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break; |
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case Opt_type_nextstepcd: |
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ufs_clear_opt (*mount_options, UFSTYPE); |
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ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD); |
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break; |
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case Opt_type_nextstep: |
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ufs_clear_opt (*mount_options, UFSTYPE); |
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ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP); |
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break; |
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case Opt_type_openstep: |
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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");
|
|
|