diff options
Diffstat (limited to 'ANDROID_3.4.5/fs/ufs/super.c')
| -rw-r--r-- | ANDROID_3.4.5/fs/ufs/super.c | 1508 |
1 files changed, 0 insertions, 1508 deletions
diff --git a/ANDROID_3.4.5/fs/ufs/super.c b/ANDROID_3.4.5/fs/ufs/super.c deleted file mode 100644 index ac8e279e..00000000 --- a/ANDROID_3.4.5/fs/ufs/super.c +++ /dev/null @@ -1,1508 +0,0 @@ -/* - * 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 <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; - } - 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->s_flags & MS_RDONLY)) - 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_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 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; - 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"); |