--- /dev/null
+/*
+ * 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)
+{
+ struct ufs_sb_info *sbi = UFS_SB(sb);
+
+ mutex_lock(&sbi->mutex);
+ sbi->mutex_owner = current;
+}
+
+void unlock_ufs(struct super_block *sb)
+{
+ struct ufs_sb_info *sbi = UFS_SB(sb);
+
+ sbi->mutex_owner = NULL;
+ mutex_unlock(&sbi->mutex);
+}
+
+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 = QSTR_INIT("..", 2);
+ ino_t ino;
+
+ ino = ufs_inode_by_name(d_inode(child), &dot_dot);
+ if (!ino)
+ return ERR_PTR(-ENOENT);
+ return d_obtain_alias(ufs_iget(d_inode(child)->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);
+
+ pr_debug("ufs_print_super_stuff\n");
+ pr_debug(" magic: 0x%x\n", magic);
+ if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) {
+ pr_debug(" fs_size: %llu\n", (unsigned long long)
+ fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size));
+ pr_debug(" fs_dsize: %llu\n", (unsigned long long)
+ fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize));
+ pr_debug(" bsize: %u\n",
+ fs32_to_cpu(sb, usb1->fs_bsize));
+ pr_debug(" fsize: %u\n",
+ fs32_to_cpu(sb, usb1->fs_fsize));
+ pr_debug(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname);
+ pr_debug(" fs_sblockloc: %llu\n", (unsigned long long)
+ fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc));
+ pr_debug(" cs_ndir(No of dirs): %llu\n", (unsigned long long)
+ fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir));
+ pr_debug(" cs_nbfree(No of free blocks): %llu\n",
+ (unsigned long long)
+ fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree));
+ pr_info(" cs_nifree(Num of free inodes): %llu\n",
+ (unsigned long long)
+ fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree));
+ pr_info(" cs_nffree(Num of free frags): %llu\n",
+ (unsigned long long)
+ fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree));
+ pr_info(" fs_maxsymlinklen: %u\n",
+ fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen));
+ } else {
+ pr_debug(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno));
+ pr_debug(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno));
+ pr_debug(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno));
+ pr_debug(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno));
+ pr_debug(" cgoffset: %u\n",
+ fs32_to_cpu(sb, usb1->fs_cgoffset));
+ pr_debug(" ~cgmask: 0x%x\n",
+ ~fs32_to_cpu(sb, usb1->fs_cgmask));
+ pr_debug(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size));
+ pr_debug(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize));
+ pr_debug(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg));
+ pr_debug(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize));
+ pr_debug(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize));
+ pr_debug(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag));
+ pr_debug(" fragshift: %u\n",
+ fs32_to_cpu(sb, usb1->fs_fragshift));
+ pr_debug(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask));
+ pr_debug(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift));
+ pr_debug(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize));
+ pr_debug(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc));
+ pr_debug(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg));
+ pr_debug(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg));
+ pr_debug(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg));
+ pr_debug(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr));
+ pr_debug(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize));
+ pr_debug(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize));
+ pr_debug(" fstodb: %u\n",
+ fs32_to_cpu(sb, usb1->fs_fsbtodb));
+ pr_debug(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos));
+ pr_debug(" ndir %u\n",
+ fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
+ pr_debug(" nifree %u\n",
+ fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
+ pr_debug(" nbfree %u\n",
+ fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
+ pr_debug(" nffree %u\n",
+ fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
+ }
+ pr_debug("\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)
+{
+ pr_debug("\nufs_print_cylinder_stuff\n");
+ pr_debug("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group));
+ pr_debug(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic));
+ pr_debug(" time: %u\n", fs32_to_cpu(sb, cg->cg_time));
+ pr_debug(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx));
+ pr_debug(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl));
+ pr_debug(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk));
+ pr_debug(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk));
+ pr_debug(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir));
+ pr_debug(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree));
+ pr_debug(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree));
+ pr_debug(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree));
+ pr_debug(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor));
+ pr_debug(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor));
+ pr_debug(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor));
+ pr_debug(" 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]));
+ pr_debug(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff));
+ pr_debug(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff));
+ pr_debug(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff));
+ pr_debug(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff));
+ pr_debug(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff));
+ pr_debug(" clustersumoff %u\n",
+ fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff));
+ pr_debug(" clusteroff %u\n",
+ fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff));
+ pr_debug(" nclusterblks %u\n",
+ fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks));
+ pr_debug("\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;
+
+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;
+ struct va_format vaf;
+ 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));
+ ufs_mark_sb_dirty(sb);
+ sb->s_flags |= MS_RDONLY;
+ }
+ va_start(args, fmt);
+ vaf.fmt = fmt;
+ vaf.va = &args;
+ switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) {
+ case UFS_MOUNT_ONERROR_PANIC:
+ panic("panic (device %s): %s: %pV\n",
+ sb->s_id, function, &vaf);
+
+ case UFS_MOUNT_ONERROR_LOCK:
+ case UFS_MOUNT_ONERROR_UMOUNT:
+ case UFS_MOUNT_ONERROR_REPAIR:
+ pr_crit("error (device %s): %s: %pV\n",
+ sb->s_id, function, &vaf);
+ }
+ va_end(args);
+}
+
+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;
+ struct va_format vaf;
+ 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));
+ ufs_mark_sb_dirty(sb);
+ }
+ va_start(args, fmt);
+ vaf.fmt = fmt;
+ vaf.va = &args;
+ sb->s_flags |= MS_RDONLY;
+ pr_crit("panic (device %s): %s: %pV\n",
+ sb->s_id, function, &vaf);
+ va_end(args);
+}
+
+void ufs_warning (struct super_block * sb, const char * function,
+ const char * fmt, ...)
+{
+ struct va_format vaf;
+ va_list args;
+
+ va_start(args, fmt);
+ vaf.fmt = fmt;
+ vaf.va = &args;
+ pr_warn("(device %s): %s: %pV\n",
+ sb->s_id, function, &vaf);
+ va_end(args);
+}
+
+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:
+ 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 &&
+ (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;
+
+ 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.
+ */
+ 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_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);
+ 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 = 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);
+
+ UFSD("EXIT\n");
+ mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+
+ 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->s_flags & MS_RDONLY))
+ ufs_put_super_internal(sb);
+ cancel_delayed_work_sync(&sbi->sync_work);
+
+ ubh_brelse_uspi (sbi->s_uspi);
+ kfree (sbi->s_uspi);
+ mutex_destroy(&sbi->mutex);
+ kfree (sbi);
+ sb->s_fs_info = NULL;
+ UFSD("EXIT\n");
+ return;
+}
+
+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->s_flags & MS_RDONLY)) {
+ 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->s_flags & MS_RDONLY));
+
+ mutex_init(&sbi->mutex);
+ 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;
+
+ /* 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)
+ pr_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)
+ pr_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)
+ pr_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)
+ pr_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)
+ pr_info("ufstype=hp is supported read-only\n");
+ sb->s_flags |= MS_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;
+ }
+
+ /*
+ * 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 |= MS_RDONLY;
+ break;
+ case UFS_FSBAD:
+ pr_err("%s(): fs is bad\n", __func__);
+ sb->s_flags |= MS_RDONLY;
+ break;
+ default:
+ pr_err("%s(): can't grok fs_clean 0x%x\n",
+ __func__, usb1->fs_clean);
+ sb->s_flags |= MS_RDONLY;
+ break;
+ }
+ } else {
+ pr_err("%s(): fs needs fsck\n", __func__);
+ 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:
+ mutex_destroy(&sbi->mutex);
+ 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);
+ lock_ufs(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);
+ 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) {
+ pr_err("ufstype can't be changed during remount\n");
+ mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return -EINVAL;
+ }
+
+ if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
+ UFS_SB(sb)->s_mount_opt = new_mount_opt;
+ mutex_unlock(&UFS_SB(sb)->s_lock);
+ 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_flags |= MS_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);
+ 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) {
+ pr_err("this ufstype is read-only supported\n");
+ mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return -EINVAL;
+ }
+ if (!ufs_read_cylinder_structures(sb)) {
+ pr_err("failed during remounting\n");
+ mutex_unlock(&UFS_SB(sb)->s_lock);
+ unlock_ufs(sb);
+ return -EPERM;
+ }
+ sb->s_flags &= ~MS_RDONLY;
+#endif
+ }
+ UFS_SB(sb)->s_mount_opt = new_mount_opt;
+ mutex_unlock(&UFS_SB(sb)->s_lock);
+ 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_third *usb3;
+ u64 id = huge_encode_dev(sb->s_bdev->bd_dev);
+
+ lock_ufs(sb);
+
+ 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 = 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 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)
+{
+ /*
+ * 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,
+ .destroy_inode = ufs_destroy_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");
Code Review / kvmfornfv.git / blobdiff