| /* |
| * linux/fs/ufs/super.c |
| * |
| * Copyright (C) 1998 |
| * Daniel Pirkl <daniel.pirkl@email.cz> |
| * Charles University, Faculty of Mathematics and Physics |
| */ |
| |
| /* Derived from |
| * |
| * linux/fs/ext2/super.c |
| * |
| * Copyright (C) 1992, 1993, 1994, 1995 |
| * Remy Card (card@masi.ibp.fr) |
| * Laboratoire MASI - Institut Blaise Pascal |
| * Universite Pierre et Marie Curie (Paris VI) |
| * |
| * from |
| * |
| * linux/fs/minix/inode.c |
| * |
| * Copyright (C) 1991, 1992 Linus Torvalds |
| * |
| * Big-endian to little-endian byte-swapping/bitmaps by |
| * David S. Miller (davem@caip.rutgers.edu), 1995 |
| */ |
| |
| /* |
| * Inspired by |
| * |
| * linux/fs/ufs/super.c |
| * |
| * Copyright (C) 1996 |
| * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu) |
| * Laboratory for Computer Science Research Computing Facility |
| * Rutgers, The State University of New Jersey |
| * |
| * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be) |
| * |
| * Kernel module support added on 96/04/26 by |
| * Stefan Reinauer <stepan@home.culture.mipt.ru> |
| * |
| * Module usage counts added on 96/04/29 by |
| * Gertjan van Wingerde <gwingerde@gmail.com> |
| * |
| * Clean swab support on 19970406 by |
| * Francois-Rene Rideau <fare@tunes.org> |
| * |
| * 4.4BSD (FreeBSD) support added on February 1st 1998 by |
| * Niels Kristian Bech Jensen <nkbj@image.dk> partially based |
| * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>. |
| * |
| * NeXTstep support added on February 5th 1998 by |
| * Niels Kristian Bech Jensen <nkbj@image.dk>. |
| * |
| * write support Daniel Pirkl <daniel.pirkl@email.cz> 1998 |
| * |
| * HP/UX hfs filesystem support added by |
| * Martin K. Petersen <mkp@mkp.net>, August 1999 |
| * |
| * UFS2 (of FreeBSD 5.x) support added by |
| * Niraj Kumar <niraj17@iitbombay.org>, Jan 2004 |
| * |
| * UFS2 write support added by |
| * Evgeniy Dushistov <dushistov@mail.ru>, 2007 |
| */ |
| |
| |
| #include <linux/exportfs.h> |
| #include <linux/module.h> |
| #include <linux/bitops.h> |
| |
| #include <stdarg.h> |
| |
| #include <asm/uaccess.h> |
| #include <asm/system.h> |
| |
| #include <linux/errno.h> |
| #include <linux/fs.h> |
| #include <linux/slab.h> |
| #include <linux/time.h> |
| #include <linux/stat.h> |
| #include <linux/string.h> |
| #include <linux/blkdev.h> |
| #include <linux/init.h> |
| #include <linux/parser.h> |
| #include <linux/buffer_head.h> |
| #include <linux/vfs.h> |
| #include <linux/log2.h> |
| #include <linux/mount.h> |
| #include <linux/seq_file.h> |
| |
| #include "ufs_fs.h" |
| #include "ufs.h" |
| #include "swab.h" |
| #include "util.h" |
| |
| void lock_ufs(struct super_block *sb) |
| { |
| #if defined(CONFIG_SMP) || defined (CONFIG_PREEMPT) |
| struct ufs_sb_info *sbi = UFS_SB(sb); |
| |
| mutex_lock(&sbi->mutex); |
| sbi->mutex_owner = current; |
| #endif |
| } |
| |
| void unlock_ufs(struct super_block *sb) |
| { |
| #if defined(CONFIG_SMP) || defined (CONFIG_PREEMPT) |
| struct ufs_sb_info *sbi = UFS_SB(sb); |
| |
| sbi->mutex_owner = NULL; |
| mutex_unlock(&sbi->mutex); |
| #endif |
| } |
| |
| static struct inode *ufs_nfs_get_inode(struct super_block *sb, u64 ino, u32 generation) |
| { |
| struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; |
| struct inode *inode; |
| |
| if (ino < UFS_ROOTINO || ino > uspi->s_ncg * uspi->s_ipg) |
| return ERR_PTR(-ESTALE); |
| |
| inode = ufs_iget(sb, ino); |
| if (IS_ERR(inode)) |
| return ERR_CAST(inode); |
| if (generation && inode->i_generation != generation) { |
| iput(inode); |
| return ERR_PTR(-ESTALE); |
| } |
| return inode; |
| } |
| |
| static struct dentry *ufs_fh_to_dentry(struct super_block *sb, struct fid *fid, |
| int fh_len, int fh_type) |
| { |
| return generic_fh_to_dentry(sb, fid, fh_len, fh_type, ufs_nfs_get_inode); |
| } |
| |
| static struct dentry *ufs_fh_to_parent(struct super_block *sb, struct fid *fid, |
| int fh_len, int fh_type) |
| { |
| return generic_fh_to_parent(sb, fid, fh_len, fh_type, ufs_nfs_get_inode); |
| } |
| |
| static struct dentry *ufs_get_parent(struct dentry *child) |
| { |
| struct qstr dot_dot = { |
| .name = "..", |
| .len = 2, |
| }; |
| ino_t ino; |
| |
| ino = ufs_inode_by_name(child->d_inode, &dot_dot); |
| if (!ino) |
| return ERR_PTR(-ENOENT); |
| return d_obtain_alias(ufs_iget(child->d_inode->i_sb, ino)); |
| } |
| |
| static const struct export_operations ufs_export_ops = { |
| .fh_to_dentry = ufs_fh_to_dentry, |
| .fh_to_parent = ufs_fh_to_parent, |
| .get_parent = ufs_get_parent, |
| }; |
| |
| #ifdef CONFIG_UFS_DEBUG |
| /* |
| * Print contents of ufs_super_block, useful for debugging |
| */ |
| static void ufs_print_super_stuff(struct super_block *sb, |
| struct ufs_super_block_first *usb1, |
| struct ufs_super_block_second *usb2, |
| struct ufs_super_block_third *usb3) |
| { |
| u32 magic = fs32_to_cpu(sb, usb3->fs_magic); |
| |
| printk("ufs_print_super_stuff\n"); |
| printk(" magic: 0x%x\n", magic); |
| if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) { |
| printk(" fs_size: %llu\n", (unsigned long long) |
| fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size)); |
| printk(" fs_dsize: %llu\n", (unsigned long long) |
| fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize)); |
| printk(" bsize: %u\n", |
| fs32_to_cpu(sb, usb1->fs_bsize)); |
| printk(" fsize: %u\n", |
| fs32_to_cpu(sb, usb1->fs_fsize)); |
| printk(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname); |
| printk(" fs_sblockloc: %llu\n", (unsigned long long) |
| fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc)); |
| printk(" cs_ndir(No of dirs): %llu\n", (unsigned long long) |
| fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir)); |
| printk(" cs_nbfree(No of free blocks): %llu\n", |
| (unsigned long long) |
| fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree)); |
| printk(KERN_INFO" cs_nifree(Num of free inodes): %llu\n", |
| (unsigned long long) |
| fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree)); |
| printk(KERN_INFO" cs_nffree(Num of free frags): %llu\n", |
| (unsigned long long) |
| fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree)); |
| printk(KERN_INFO" fs_maxsymlinklen: %u\n", |
| fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen)); |
| } else { |
| printk(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno)); |
| printk(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno)); |
| printk(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno)); |
| printk(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno)); |
| printk(" cgoffset: %u\n", |
| fs32_to_cpu(sb, usb1->fs_cgoffset)); |
| printk(" ~cgmask: 0x%x\n", |
| ~fs32_to_cpu(sb, usb1->fs_cgmask)); |
| printk(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size)); |
| printk(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize)); |
| printk(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg)); |
| printk(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize)); |
| printk(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize)); |
| printk(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag)); |
| printk(" fragshift: %u\n", |
| fs32_to_cpu(sb, usb1->fs_fragshift)); |
| printk(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask)); |
| printk(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift)); |
| printk(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize)); |
| printk(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc)); |
| printk(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg)); |
| printk(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg)); |
| printk(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg)); |
| printk(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr)); |
| printk(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize)); |
| printk(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize)); |
| printk(" fstodb: %u\n", |
| fs32_to_cpu(sb, usb1->fs_fsbtodb)); |
| printk(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos)); |
| printk(" ndir %u\n", |
| fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir)); |
| printk(" nifree %u\n", |
| fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree)); |
| printk(" nbfree %u\n", |
| fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)); |
| printk(" nffree %u\n", |
| fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree)); |
| } |
| printk("\n"); |
| } |
| |
| /* |
| * Print contents of ufs_cylinder_group, useful for debugging |
| */ |
| static void ufs_print_cylinder_stuff(struct super_block *sb, |
| struct ufs_cylinder_group *cg) |
| { |
| printk("\nufs_print_cylinder_stuff\n"); |
| printk("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group)); |
| printk(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic)); |
| printk(" time: %u\n", fs32_to_cpu(sb, cg->cg_time)); |
| printk(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx)); |
| printk(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl)); |
| printk(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk)); |
| printk(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk)); |
| printk(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir)); |
| printk(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree)); |
| printk(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree)); |
| printk(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree)); |
| printk(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor)); |
| printk(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor)); |
| printk(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor)); |
| printk(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n", |
| fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]), |
| fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]), |
| fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]), |
| fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7])); |
| printk(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff)); |
| printk(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff)); |
| printk(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff)); |
| printk(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff)); |
| printk(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff)); |
| printk(" clustersumoff %u\n", |
| fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff)); |
| printk(" clusteroff %u\n", |
| fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff)); |
| printk(" nclusterblks %u\n", |
| fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks)); |
| printk("\n"); |
| } |
| #else |
| # define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/ |
| # define ufs_print_cylinder_stuff(sb, cg) /**/ |
| #endif /* CONFIG_UFS_DEBUG */ |
| |
| static const struct super_operations ufs_super_ops; |
| |
| static char error_buf[1024]; |
| |
| void ufs_error (struct super_block * sb, const char * function, |
| const char * fmt, ...) |
| { |
| struct ufs_sb_private_info * uspi; |
| struct ufs_super_block_first * usb1; |
| va_list args; |
| |
| uspi = UFS_SB(sb)->s_uspi; |
| usb1 = ubh_get_usb_first(uspi); |
| |
| if (!(sb->s_flags & MS_RDONLY)) { |
| usb1->fs_clean = UFS_FSBAD; |
| ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
| sb->s_dirt = 1; |
| sb->s_flags |= MS_RDONLY; |
| } |
| va_start (args, fmt); |
| vsnprintf (error_buf, sizeof(error_buf), fmt, args); |
| va_end (args); |
| switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) { |
| case UFS_MOUNT_ONERROR_PANIC: |
| panic ("UFS-fs panic (device %s): %s: %s\n", |
| sb->s_id, function, error_buf); |
| |
| case UFS_MOUNT_ONERROR_LOCK: |
| case UFS_MOUNT_ONERROR_UMOUNT: |
| case UFS_MOUNT_ONERROR_REPAIR: |
| printk (KERN_CRIT "UFS-fs error (device %s): %s: %s\n", |
| sb->s_id, function, error_buf); |
| } |
| } |
| |
| void ufs_panic (struct super_block * sb, const char * function, |
| const char * fmt, ...) |
| { |
| struct ufs_sb_private_info * uspi; |
| struct ufs_super_block_first * usb1; |
| va_list args; |
| |
| uspi = UFS_SB(sb)->s_uspi; |
| usb1 = ubh_get_usb_first(uspi); |
| |
| if (!(sb->s_flags & MS_RDONLY)) { |
| usb1->fs_clean = UFS_FSBAD; |
| ubh_mark_buffer_dirty(USPI_UBH(uspi)); |
| sb->s_dirt = 1; |
| } |
| va_start (args, fmt); |
| vsnprintf (error_buf, sizeof(error_buf), fmt, args); |
| va_end (args); |
| sb->s_flags |= MS_RDONLY; |
| printk (KERN_CRIT "UFS-fs panic (device %s): %s: %s\n", |
| sb->s_id, function, error_buf); |
| } |
| |
| void ufs_warning (struct super_block * sb, const char * function, |
| const char * fmt, ...) |
| { |
| va_list args; |
| |
| va_start (args, fmt); |
| vsnprintf (error_buf, sizeof(error_buf), fmt, args); |
| va_end (args); |
| printk (KERN_WARNING "UFS-fs warning (device %s): %s: %s\n", |
| sb->s_id, function, error_buf); |
| } |
| |
| enum { |
| Opt_type_old = UFS_MOUNT_UFSTYPE_OLD, |
| Opt_type_sunx86 = UFS_MOUNT_UFSTYPE_SUNx86, |
| Opt_type_sun = UFS_MOUNT_UFSTYPE_SUN, |
| Opt_type_sunos = UFS_MOUNT_UFSTYPE_SUNOS, |
| Opt_type_44bsd = UFS_MOUNT_UFSTYPE_44BSD, |
| Opt_type_ufs2 = UFS_MOUNT_UFSTYPE_UFS2, |
| Opt_type_hp = UFS_MOUNT_UFSTYPE_HP, |
| Opt_type_nextstepcd = UFS_MOUNT_UFSTYPE_NEXTSTEP_CD, |
| Opt_type_nextstep = UFS_MOUNT_UFSTYPE_NEXTSTEP, |
| Opt_type_openstep = UFS_MOUNT_UFSTYPE_OPENSTEP, |
| Opt_onerror_panic = UFS_MOUNT_ONERROR_PANIC, |
| Opt_onerror_lock = UFS_MOUNT_ONERROR_LOCK, |
| Opt_onerror_umount = UFS_MOUNT_ONERROR_UMOUNT, |
| Opt_onerror_repair = UFS_MOUNT_ONERROR_REPAIR, |
| Opt_err |
| }; |
| |
| static const match_table_t tokens = { |
| {Opt_type_old, "ufstype=old"}, |
| {Opt_type_sunx86, "ufstype=sunx86"}, |
| {Opt_type_sun, "ufstype=sun"}, |
| {Opt_type_sunos, "ufstype=sunos"}, |
| {Opt_type_44bsd, "ufstype=44bsd"}, |
| {Opt_type_ufs2, "ufstype=ufs2"}, |
| {Opt_type_ufs2, "ufstype=5xbsd"}, |
| {Opt_type_hp, "ufstype=hp"}, |
| {Opt_type_nextstepcd, "ufstype=nextstep-cd"}, |
| {Opt_type_nextstep, "ufstype=nextstep"}, |
| {Opt_type_openstep, "ufstype=openstep"}, |
| /*end of possible ufs types */ |
| {Opt_onerror_panic, "onerror=panic"}, |
| {Opt_onerror_lock, "onerror=lock"}, |
| {Opt_onerror_umount, "onerror=umount"}, |
| {Opt_onerror_repair, "onerror=repair"}, |
| {Opt_err, NULL} |
| }; |
| |
| static int ufs_parse_options (char * options, unsigned * mount_options) |
| { |
| char * p; |
| |
| UFSD("ENTER\n"); |
| |
| if (!options) |
| return 1; |
| |
| while ((p = strsep(&options, ",")) != NULL) { |
| substring_t args[MAX_OPT_ARGS]; |
| int token; |
| if (!*p) |
| continue; |
| |
| token = match_token(p, tokens, args); |
| switch (token) { |
| case Opt_type_old: |
| ufs_clear_opt (*mount_options, UFSTYPE); |
| ufs_set_opt (*mount_options, UFSTYPE_OLD); |
| break; |
| case Opt_type_sunx86: |
| ufs_clear_opt (*mount_options, UFSTYPE); |
| ufs_set_opt (*mount_options, UFSTYPE_SUNx86); |
| break; |
| case Opt_type_sun: |
| ufs_clear_opt (*mount_options, UFSTYPE); |
| ufs_set_opt (*mount_options, UFSTYPE_SUN); |
| break; |
| case Opt_type_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: |
| printk("UFS-fs: Unable to do repair on error, " |
| "will lock lock instead\n"); |
| ufs_clear_opt (*mount_options, ONERROR); |
| ufs_set_opt (*mount_options, ONERROR_REPAIR); |
| break; |
| default: |
| printk("UFS-fs: Invalid option: \"%s\" " |
| "or missing value\n", p); |
| return 0; |
| } |
| } |
| return 1; |
| } |
| |
| /* |
| * 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 && |
| (usb1->fs_flags & UFS_FLAGS_UPDATED)) || |
| 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; |
| struct ufs_super_block_third *usb3; |
| |
| UFSD("ENTER\n"); |
| |
| usb3 = ubh_get_usb_third(uspi); |
| /* |
| * 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. |
| */ |
| if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_NOFS))) |
| 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_44BSD && |
| (usb1->fs_flags & UFS_FLAGS_UPDATED)) || |
| 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); |
| } else { |
| 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); |
| } |
| 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_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"); |
| |
| sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL); |
| if (!sbi) |
| goto failed_nomem; |
| sb->s_fs_info = sbi; |
| |
| UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY)); |
| |
| #ifndef CONFIG_UFS_FS_WRITE |
| if (!(sb->s_flags & MS_RDONLY)) { |
| printk("ufs was compiled with read-only support, " |
| "can't be mounted as read-write\n"); |
| goto failed; |
| } |
| #endif |
| mutex_init(&sbi->mutex); |
| /* |
| * Set default mount options |
| * Parse mount options |
| */ |
| sbi->s_mount_opt = 0; |
| ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK); |
| if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) { |
| printk("wrong mount options\n"); |
| goto failed; |
| } |
| if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) { |
| if (!silent) |
| printk("You didn't specify the type of your ufs filesystem\n\n" |
| "mount -t ufs -o ufstype=" |
| "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|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; |
| |
| /* Keep 2Gig file limit. Some UFS variants need to override |
| this but as I don't know which I'll let those in the know loosen |
| the rules */ |
| switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) { |
| case UFS_MOUNT_UFSTYPE_44BSD: |
| UFSD("ufstype=44bsd\n"); |
| uspi->s_fsize = block_size = 512; |
| uspi->s_fmask = ~(512 - 1); |
| uspi->s_fshift = 9; |
| uspi->s_sbsize = super_block_size = 1536; |
| uspi->s_sbbase = 0; |
| flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; |
| break; |
| case UFS_MOUNT_UFSTYPE_UFS2: |
| UFSD("ufstype=ufs2\n"); |
| 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; |
| 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->s_flags & MS_RDONLY)) { |
| if (!silent) |
| printk(KERN_INFO "ufstype=old is supported read-only\n"); |
| sb->s_flags |= MS_RDONLY; |
| } |
| break; |
| |
| case UFS_MOUNT_UFSTYPE_NEXTSTEP: |
| UFSD("ufstype=nextstep\n"); |
| uspi->s_fsize = block_size = 1024; |
| uspi->s_fmask = ~(1024 - 1); |
| uspi->s_fshift = 10; |
| uspi->s_sbsize = super_block_size = 2048; |
| uspi->s_sbbase = 0; |
| uspi->s_dirblksize = 1024; |
| flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
| if (!(sb->s_flags & MS_RDONLY)) { |
| if (!silent) |
| printk(KERN_INFO "ufstype=nextstep is supported read-only\n"); |
| sb->s_flags |= MS_RDONLY; |
| } |
| break; |
| |
| case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD: |
| UFSD("ufstype=nextstep-cd\n"); |
| uspi->s_fsize = block_size = 2048; |
| uspi->s_fmask = ~(2048 - 1); |
| uspi->s_fshift = 11; |
| uspi->s_sbsize = super_block_size = 2048; |
| uspi->s_sbbase = 0; |
| uspi->s_dirblksize = 1024; |
| flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
| if (!(sb->s_flags & MS_RDONLY)) { |
| if (!silent) |
| printk(KERN_INFO "ufstype=nextstep-cd is supported read-only\n"); |
| sb->s_flags |= MS_RDONLY; |
| } |
| break; |
| |
| case UFS_MOUNT_UFSTYPE_OPENSTEP: |
| UFSD("ufstype=openstep\n"); |
| uspi->s_fsize = block_size = 1024; |
| uspi->s_fmask = ~(1024 - 1); |
| uspi->s_fshift = 10; |
| uspi->s_sbsize = super_block_size = 2048; |
| uspi->s_sbbase = 0; |
| uspi->s_dirblksize = 1024; |
| flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; |
| if (!(sb->s_flags & MS_RDONLY)) { |
| if (!silent) |
| printk(KERN_INFO "ufstype=openstep is supported read-only\n"); |
| sb->s_flags |= MS_RDONLY; |
| } |
| break; |
| |
| case UFS_MOUNT_UFSTYPE_HP: |
| UFSD("ufstype=hp\n"); |
| uspi->s_fsize = block_size = 1024; |
| uspi->s_fmask = ~(1024 - 1); |
| uspi->s_fshift = 10; |
| uspi->s_sbsize = super_block_size = 2048; |
| uspi->s_sbbase = 0; |
| flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; |
| if (!(sb->s_flags & MS_RDONLY)) { |
| if (!silent) |
| printk(KERN_INFO "ufstype=hp is supported read-only\n"); |
| sb->s_flags |= MS_RDONLY; |
| } |
| break; |
| default: |
| if (!silent) |
| printk("unknown ufstype\n"); |
| goto failed; |
| } |
| |
| again: |
| if (!sb_set_blocksize(sb, block_size)) { |
| printk(KERN_ERR "UFS: failed to set blocksize\n"); |
| goto failed; |
| } |
| |
| /* |
| * read ufs super block from device |
| */ |
| |
| 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; |
| } |
| |
| /* |
| * 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) |
| printk("ufs_read_super: bad magic number\n"); |
| goto failed; |
| |
| magic_found: |
| /* |
| * Check block and fragment sizes |
| */ |
| uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize); |
| uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize); |
| uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize); |
| uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); |
| uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); |
| |
| if (!is_power_of_2(uspi->s_fsize)) { |
| printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n", |
| uspi->s_fsize); |
| goto failed; |
| } |
| if (uspi->s_fsize < 512) { |
| printk(KERN_ERR "ufs_read_super: fragment size %u is too small\n", |
| uspi->s_fsize); |
| goto failed; |
| } |
| if (uspi->s_fsize > 4096) { |
| printk(KERN_ERR "ufs_read_super: fragment size %u is too large\n", |
| uspi->s_fsize); |
| goto failed; |
| } |
| if (!is_power_of_2(uspi->s_bsize)) { |
| printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n", |
| uspi->s_bsize); |
| goto failed; |
| } |
| if (uspi->s_bsize < 4096) { |
| printk(KERN_ERR "ufs_read_super: block size %u is too small\n", |
| uspi->s_bsize); |
| goto failed; |
| } |
| if (uspi->s_bsize / uspi->s_fsize > 8) { |
| printk(KERN_ERR "ufs_read_super: too many fragments per block (%u)\n", |
| uspi->s_bsize / uspi->s_fsize); |
| goto failed; |
| } |
| if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) { |
| ubh_brelse_uspi(uspi); |
| ubh = NULL; |
| block_size = uspi->s_fsize; |
| super_block_size = uspi->s_sbsize; |
| UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size); |
| goto again; |
| } |
| |
| 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: |
| printk("ufs_read_super: fs is active\n"); |
| sb->s_flags |= MS_RDONLY; |
| break; |
| case UFS_FSBAD: |
| printk("ufs_read_super: fs is bad\n"); |
| sb->s_flags |= MS_RDONLY; |
| break; |
| default: |
| printk("ufs_read_super: can't grok fs_clean 0x%x\n", usb1->fs_clean); |
| sb->s_flags |= MS_RDONLY; |
| break; |
| } |
| } else { |
| printk("ufs_read_super: fs needs fsck\n"); |
| sb->s_flags |= MS_RDONLY; |
| } |
| |
| /* |
| * Read ufs_super_block into internal data structures |
| */ |
| sb->s_op = &ufs_super_ops; |
| sb->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_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size); |
| uspi->s_u2_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); |
| |
| /* |
| * 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; |
| } |
| |
| inode = ufs_iget(sb, UFS_ROOTINO); |
| if (IS_ERR(inode)) { |
| ret = PTR_ERR(inode); |
| goto failed; |
| } |
| sb->s_root = d_alloc_root(inode); |
| if (!sb->s_root) { |
| ret = -ENOMEM; |
| goto dalloc_failed; |
| } |
| |
| ufs_setup_cstotal(sb); |
| /* |
| * Read cylinder group structures |
| */ |
| if (!(sb->s_flags & MS_RDONLY)) |
| if (!ufs_read_cylinder_structures(sb)) |
| goto failed; |
| |
| UFSD("EXIT\n"); |
| return 0; |
| |
| dalloc_failed: |
| iput(inode); |
| failed: |
| if (ubh) |
| ubh_brelse_uspi (uspi); |
| 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_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; |
| |
| lock_ufs(sb); |
| lock_super(sb); |
| |
| 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 = cpu_to_fs32(sb, get_seconds()); |
| 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); |
| sb->s_dirt = 0; |
| |
| UFSD("EXIT\n"); |
| unlock_super(sb); |
| unlock_ufs(sb); |
| |
| return 0; |
| } |
| |
| static void ufs_write_super(struct super_block *sb) |
| { |
| if (!(sb->s_flags & MS_RDONLY)) |
| ufs_sync_fs(sb, 1); |
| else |
| sb->s_dirt = 0; |
| } |
| |
| static void ufs_put_super(struct super_block *sb) |
| { |
| struct ufs_sb_info * sbi = UFS_SB(sb); |
| |
| UFSD("ENTER\n"); |
| |
| if (sb->s_dirt) |
| ufs_write_super(sb); |
| |
| if (!(sb->s_flags & MS_RDONLY)) |
| ufs_put_super_internal(sb); |
| |
| ubh_brelse_uspi (sbi->s_uspi); |
| kfree (sbi->s_uspi); |
| kfree (sbi); |
| sb->s_fs_info = NULL; |
| UFSD("EXIT\n"); |
| return; |
| } |
| |
| |
| static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) |
| { |
| struct ufs_sb_private_info * uspi; |
| struct ufs_super_block_first * usb1; |
| struct ufs_super_block_third * usb3; |
| unsigned new_mount_opt, ufstype; |
| unsigned flags; |
| |
| lock_ufs(sb); |
| lock_super(sb); |
| 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)) { |
| unlock_super(sb); |
| unlock_ufs(sb); |
| return -EINVAL; |
| } |
| if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) { |
| new_mount_opt |= ufstype; |
| } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { |
| printk("ufstype can't be changed during remount\n"); |
| unlock_super(sb); |
| unlock_ufs(sb); |
| return -EINVAL; |
| } |
| |
| if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) { |
| UFS_SB(sb)->s_mount_opt = new_mount_opt; |
| unlock_super(sb); |
| unlock_ufs(sb); |
| return 0; |
| } |
| |
| /* |
| * fs was mouted as rw, remounting ro |
| */ |
| if (*mount_flags & MS_RDONLY) { |
| ufs_put_super_internal(sb); |
| usb1->fs_time = cpu_to_fs32(sb, get_seconds()); |
| 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_dirt = 0; |
| sb->s_flags |= MS_RDONLY; |
| } else { |
| /* |
| * fs was mounted as ro, remounting rw |
| */ |
| #ifndef CONFIG_UFS_FS_WRITE |
| printk("ufs was compiled with read-only support, " |
| "can't be mounted as read-write\n"); |
| unlock_super(sb); |
| unlock_ufs(sb); |
| 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) { |
| printk("this ufstype is read-only supported\n"); |
| unlock_super(sb); |
| unlock_ufs(sb); |
| return -EINVAL; |
| } |
| if (!ufs_read_cylinder_structures(sb)) { |
| printk("failed during remounting\n"); |
| unlock_super(sb); |
| unlock_ufs(sb); |
| return -EPERM; |
| } |
| sb->s_flags &= ~MS_RDONLY; |
| #endif |
| } |
| UFS_SB(sb)->s_mount_opt = new_mount_opt; |
| unlock_super(sb); |
| unlock_ufs(sb); |
| return 0; |
| } |
| |
| static int ufs_show_options(struct seq_file *seq, struct vfsmount *vfs) |
| { |
| struct ufs_sb_info *sbi = UFS_SB(vfs->mnt_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; |
| struct ufs_super_block_first *usb1; |
| struct ufs_super_block_second *usb2; |
| struct ufs_super_block_third *usb3; |
| u64 id = huge_encode_dev(sb->s_bdev->bd_dev); |
| |
| lock_ufs(sb); |
| |
| usb1 = ubh_get_usb_first(uspi); |
| usb2 = ubh_get_usb_second(uspi); |
| usb3 = ubh_get_usb_third(uspi); |
| |
| if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { |
| buf->f_type = UFS2_MAGIC; |
| buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); |
| } else { |
| buf->f_type = UFS_MAGIC; |
| buf->f_blocks = uspi->s_dsize; |
| } |
| buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) + |
| uspi->cs_total.cs_nffree; |
| buf->f_ffree = uspi->cs_total.cs_nifree; |
| buf->f_bsize = sb->s_blocksize; |
| buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree)) |
| ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0; |
| buf->f_files = uspi->s_ncg * uspi->s_ipg; |
| buf->f_namelen = UFS_MAXNAMLEN; |
| buf->f_fsid.val[0] = (u32)id; |
| buf->f_fsid.val[1] = (u32)(id >> 32); |
| |
| unlock_ufs(sb); |
| |
| 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 = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, GFP_NOFS); |
| if (!ei) |
| return NULL; |
| ei->vfs_inode.i_version = 1; |
| return &ei->vfs_inode; |
| } |
| |
| static void ufs_i_callback(struct rcu_head *head) |
| { |
| struct inode *inode = container_of(head, struct inode, i_rcu); |
| kmem_cache_free(ufs_inode_cachep, UFS_I(inode)); |
| } |
| |
| static void ufs_destroy_inode(struct inode *inode) |
| { |
| call_rcu(&inode->i_rcu, ufs_i_callback); |
| } |
| |
| 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_inodecache(void) |
| { |
| ufs_inode_cachep = kmem_cache_create("ufs_inode_cache", |
| sizeof(struct ufs_inode_info), |
| 0, (SLAB_RECLAIM_ACCOUNT| |
| SLAB_MEM_SPREAD), |
| init_once); |
| if (ufs_inode_cachep == NULL) |
| return -ENOMEM; |
| return 0; |
| } |
| |
| static void destroy_inodecache(void) |
| { |
| kmem_cache_destroy(ufs_inode_cachep); |
| } |
| |
| static const struct super_operations ufs_super_ops = { |
| .alloc_inode = ufs_alloc_inode, |
| .destroy_inode = ufs_destroy_inode, |
| .write_inode = ufs_write_inode, |
| .evict_inode = ufs_evict_inode, |
| .put_super = ufs_put_super, |
| .write_super = ufs_write_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, |
| }; |
| |
| 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"); |