super.c
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- /*
- * 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 <gertjan@cs.vu.nl>
- *
- * 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
- *
- */
- #include <linux/config.h>
- #include <linux/module.h>
- #include <stdarg.h>
- #include <asm/bitops.h>
- #include <asm/uaccess.h>
- #include <asm/system.h>
- #include <linux/errno.h>
- #include <linux/fs.h>
- #include <linux/ufs_fs.h>
- #include <linux/slab.h>
- #include <linux/sched.h>
- #include <linux/stat.h>
- #include <linux/string.h>
- #include <linux/locks.h>
- #include <linux/blkdev.h>
- #include <linux/init.h>
- #include "swab.h"
- #include "util.h"
- #undef UFS_SUPER_DEBUG
- #undef UFS_SUPER_DEBUG_MORE
- #ifdef UFS_SUPER_DEBUG
- #define UFSD(x) printk("(%s, %d), %s: ", __FILE__, __LINE__, __FUNCTION__); printk x;
- #else
- #define UFSD(x)
- #endif
- #ifdef UFS_SUPER_DEBUG_MORE
- /*
- * Print contents of ufs_super_block, useful for debugging
- */
- 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)
- {
- printk("ufs_print_super_stuffn");
- printk("size of usb: %un", sizeof(struct ufs_super_block));
- printk(" magic: 0x%xn", fs32_to_cpu(sb, usb3->fs_magic));
- printk(" sblkno: %un", fs32_to_cpu(sb, usb1->fs_sblkno));
- printk(" cblkno: %un", fs32_to_cpu(sb, usb1->fs_cblkno));
- printk(" iblkno: %un", fs32_to_cpu(sb, usb1->fs_iblkno));
- printk(" dblkno: %un", fs32_to_cpu(sb, usb1->fs_dblkno));
- printk(" cgoffset: %un", fs32_to_cpu(sb, usb1->fs_cgoffset));
- printk(" ~cgmask: 0x%xn", ~fs32_to_cpu(sb, usb1->fs_cgmask));
- printk(" size: %un", fs32_to_cpu(sb, usb1->fs_size));
- printk(" dsize: %un", fs32_to_cpu(sb, usb1->fs_dsize));
- printk(" ncg: %un", fs32_to_cpu(sb, usb1->fs_ncg));
- printk(" bsize: %un", fs32_to_cpu(sb, usb1->fs_bsize));
- printk(" fsize: %un", fs32_to_cpu(sb, usb1->fs_fsize));
- printk(" frag: %un", fs32_to_cpu(sb, usb1->fs_frag));
- printk(" fragshift: %un", fs32_to_cpu(sb, usb1->fs_fragshift));
- printk(" ~fmask: %un", ~fs32_to_cpu(sb, usb1->fs_fmask));
- printk(" fshift: %un", fs32_to_cpu(sb, usb1->fs_fshift));
- printk(" sbsize: %un", fs32_to_cpu(sb, usb1->fs_sbsize));
- printk(" spc: %un", fs32_to_cpu(sb, usb1->fs_spc));
- printk(" cpg: %un", fs32_to_cpu(sb, usb1->fs_cpg));
- printk(" ipg: %un", fs32_to_cpu(sb, usb1->fs_ipg));
- printk(" fpg: %un", fs32_to_cpu(sb, usb1->fs_fpg));
- printk(" csaddr: %un", fs32_to_cpu(sb, usb1->fs_csaddr));
- printk(" cssize: %un", fs32_to_cpu(sb, usb1->fs_cssize));
- printk(" cgsize: %un", fs32_to_cpu(sb, usb1->fs_cgsize));
- printk(" fstodb: %un", fs32_to_cpu(sb, usb1->fs_fsbtodb));
- printk(" contigsumsize: %dn", fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_contigsumsize));
- printk(" postblformat: %un", fs32_to_cpu(sb, usb3->fs_postblformat));
- printk(" nrpos: %un", fs32_to_cpu(sb, usb3->fs_nrpos));
- printk(" ndir %un", fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir));
- printk(" nifree %un", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree));
- printk(" nbfree %un", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree));
- printk(" nffree %un", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree));
- printk("n");
- }
- /*
- * Print contents of ufs_cylinder_group, useful for debugging
- */
- void ufs_print_cylinder_stuff(struct super_block *sb, struct ufs_cylinder_group *cg)
- {
- printk("nufs_print_cylinder_stuffn");
- printk("size of ucg: %un", sizeof(struct ufs_cylinder_group));
- printk(" magic: %xn", fs32_to_cpu(sb, cg->cg_magic));
- printk(" time: %un", fs32_to_cpu(sb, cg->cg_time));
- printk(" cgx: %un", fs32_to_cpu(sb, cg->cg_cgx));
- printk(" ncyl: %un", fs16_to_cpu(sb, cg->cg_ncyl));
- printk(" niblk: %un", fs16_to_cpu(sb, cg->cg_niblk));
- printk(" ndblk: %un", fs32_to_cpu(sb, cg->cg_ndblk));
- printk(" cs_ndir: %un", fs32_to_cpu(sb, cg->cg_cs.cs_ndir));
- printk(" cs_nbfree: %un", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree));
- printk(" cs_nifree: %un", fs32_to_cpu(sb, cg->cg_cs.cs_nifree));
- printk(" cs_nffree: %un", fs32_to_cpu(sb, cg->cg_cs.cs_nffree));
- printk(" rotor: %un", fs32_to_cpu(sb, cg->cg_rotor));
- printk(" frotor: %un", fs32_to_cpu(sb, cg->cg_frotor));
- printk(" irotor: %un", fs32_to_cpu(sb, cg->cg_irotor));
- printk(" frsum: %u, %u, %u, %u, %u, %u, %u, %un",
- 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: %un", fs32_to_cpu(sb, cg->cg_btotoff));
- printk(" boff: %un", fs32_to_cpu(sb, cg->cg_boff));
- printk(" iuseoff: %un", fs32_to_cpu(sb, cg->cg_iusedoff));
- printk(" freeoff: %un", fs32_to_cpu(sb, cg->cg_freeoff));
- printk(" nextfreeoff: %un", fs32_to_cpu(sb, cg->cg_nextfreeoff));
- printk(" clustersumoff %un", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff));
- printk(" clusteroff %un", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff));
- printk(" nclusterblks %un", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks));
- printk("n");
- }
- #endif /* UFS_SUPER_DEBUG_MORE */
- static 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 = sb->u.ufs_sb.s_uspi;
- usb1 = ubh_get_usb_first(USPI_UBH);
-
- if (!(sb->s_flags & MS_RDONLY)) {
- usb1->fs_clean = UFS_FSBAD;
- ubh_mark_buffer_dirty(USPI_UBH);
- sb->s_dirt = 1;
- sb->s_flags |= MS_RDONLY;
- }
- va_start (args, fmt);
- vsprintf (error_buf, fmt, args);
- va_end (args);
- switch (sb->u.ufs_sb.s_mount_opt & UFS_MOUNT_ONERROR) {
- case UFS_MOUNT_ONERROR_PANIC:
- panic ("UFS-fs panic (device %s): %s: %sn",
- kdevname(sb->s_dev), 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: %sn",
- kdevname(sb->s_dev), 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 = sb->u.ufs_sb.s_uspi;
- usb1 = ubh_get_usb_first(USPI_UBH);
-
- if (!(sb->s_flags & MS_RDONLY)) {
- usb1->fs_clean = UFS_FSBAD;
- ubh_mark_buffer_dirty(USPI_UBH);
- sb->s_dirt = 1;
- }
- va_start (args, fmt);
- vsprintf (error_buf, fmt, args);
- va_end (args);
- sb->s_flags |= MS_RDONLY;
- printk (KERN_CRIT "UFS-fs panic (device %s): %s: %sn",
- kdevname(sb->s_dev), function, error_buf);
- }
- void ufs_warning (struct super_block * sb, const char * function,
- const char * fmt, ...)
- {
- va_list args;
- va_start (args, fmt);
- vsprintf (error_buf, fmt, args);
- va_end (args);
- printk (KERN_WARNING "UFS-fs warning (device %s): %s: %sn",
- kdevname(sb->s_dev), function, error_buf);
- }
- static int ufs_parse_options (char * options, unsigned * mount_options)
- {
- char * this_char;
- char * value;
-
- UFSD(("ENTERn"))
-
- if (!options)
- return 1;
-
- for (this_char = strtok (options, ",");
- this_char != NULL;
- this_char = strtok (NULL, ",")) {
-
- if ((value = strchr (this_char, '=')) != NULL)
- *value++ = 0;
- if (!strcmp (this_char, "ufstype")) {
- ufs_clear_opt (*mount_options, UFSTYPE);
- if (!strcmp (value, "old"))
- ufs_set_opt (*mount_options, UFSTYPE_OLD);
- else if (!strcmp (value, "sun"))
- ufs_set_opt (*mount_options, UFSTYPE_SUN);
- else if (!strcmp (value, "44bsd"))
- ufs_set_opt (*mount_options, UFSTYPE_44BSD);
- else if (!strcmp (value, "nextstep"))
- ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP);
- else if (!strcmp (value, "nextstep-cd"))
- ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD);
- else if (!strcmp (value, "openstep"))
- ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP);
- else if (!strcmp (value, "sunx86"))
- ufs_set_opt (*mount_options, UFSTYPE_SUNx86);
- else if (!strcmp (value, "hp"))
- ufs_set_opt (*mount_options, UFSTYPE_HP);
- else {
- printk ("UFS-fs: Invalid type option: %sn", value);
- return 0;
- }
- }
- else if (!strcmp (this_char, "onerror")) {
- ufs_clear_opt (*mount_options, ONERROR);
- if (!strcmp (value, "panic"))
- ufs_set_opt (*mount_options, ONERROR_PANIC);
- else if (!strcmp (value, "lock"))
- ufs_set_opt (*mount_options, ONERROR_LOCK);
- else if (!strcmp (value, "umount"))
- ufs_set_opt (*mount_options, ONERROR_UMOUNT);
- else if (!strcmp (value, "repair")) {
- printk("UFS-fs: Unable to do repair on error, "
- "will lock lock instead n");
- ufs_set_opt (*mount_options, ONERROR_REPAIR);
- }
- else {
- printk ("UFS-fs: Invalid action onerror: %sn", value);
- return 0;
- }
- }
- else {
- printk("UFS-fs: Invalid option: %sn", this_char);
- return 0;
- }
- }
- return 1;
- }
- /*
- * Read on-disk structures associated with cylinder groups
- */
- int ufs_read_cylinder_structures (struct super_block * sb) {
- struct ufs_sb_private_info * uspi;
- struct ufs_buffer_head * ubh;
- unsigned char * base, * space;
- unsigned size, blks, i;
-
- UFSD(("ENTERn"))
-
- uspi = sb->u.ufs_sb.s_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_KERNEL);
- if (!base)
- goto failed;
- 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);
- sb->u.ufs_sb.s_csp[ufs_fragstoblks(i)] = (struct ufs_csum *)space;
- 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 (!(sb->u.ufs_sb.s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_KERNEL)))
- goto failed;
- for (i = 0; i < uspi->s_ncg; i++)
- sb->u.ufs_sb.s_ucg[i] = NULL;
- for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
- sb->u.ufs_sb.s_ucpi[i] = NULL;
- sb->u.ufs_sb.s_cgno[i] = UFS_CGNO_EMPTY;
- }
- for (i = 0; i < uspi->s_ncg; i++) {
- UFSD(("read cg %un", i))
- if (!(sb->u.ufs_sb.s_ucg[i] = sb_bread(sb, ufs_cgcmin(i))))
- goto failed;
- if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sb->u.ufs_sb.s_ucg[i]->b_data))
- goto failed;
- #ifdef UFS_SUPER_DEBUG_MORE
- ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sb->u.ufs_sb.s_ucg[i]->b_data);
- #endif
- }
- for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) {
- if (!(sb->u.ufs_sb.s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_KERNEL)))
- goto failed;
- sb->u.ufs_sb.s_cgno[i] = UFS_CGNO_EMPTY;
- }
- sb->u.ufs_sb.s_cg_loaded = 0;
- UFSD(("EXITn"))
- return 1;
- failed:
- if (base) kfree (base);
- if (sb->u.ufs_sb.s_ucg) {
- for (i = 0; i < uspi->s_ncg; i++)
- if (sb->u.ufs_sb.s_ucg[i]) brelse (sb->u.ufs_sb.s_ucg[i]);
- kfree (sb->u.ufs_sb.s_ucg);
- for (i = 0; i < UFS_MAX_GROUP_LOADED; i++)
- if (sb->u.ufs_sb.s_ucpi[i]) kfree (sb->u.ufs_sb.s_ucpi[i]);
- }
- UFSD(("EXIT (FAILED)n"))
- return 0;
- }
- /*
- * Put on-disk structures associated with cylinder groups and
- * write them back to disk
- */
- void ufs_put_cylinder_structures (struct super_block * sb) {
- struct ufs_sb_private_info * uspi;
- struct ufs_buffer_head * ubh;
- unsigned char * base, * space;
- unsigned blks, size, i;
-
- UFSD(("ENTERn"))
-
- uspi = sb->u.ufs_sb.s_uspi;
- size = uspi->s_cssize;
- blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift;
- base = space = (char*) sb->u.ufs_sb.s_csp[0];
- 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 < sb->u.ufs_sb.s_cg_loaded; i++) {
- ufs_put_cylinder (sb, i);
- kfree (sb->u.ufs_sb.s_ucpi[i]);
- }
- for (; i < UFS_MAX_GROUP_LOADED; i++)
- kfree (sb->u.ufs_sb.s_ucpi[i]);
- for (i = 0; i < uspi->s_ncg; i++)
- brelse (sb->u.ufs_sb.s_ucg[i]);
- kfree (sb->u.ufs_sb.s_ucg);
- kfree (base);
- UFSD(("EXITn"))
- }
- struct super_block * ufs_read_super (struct super_block * sb, void * data,
- int silent)
- {
- 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;
- uspi = NULL;
- ubh = NULL;
- flags = 0;
-
- UFSD(("ENTERn"))
-
- UFSD(("flag %un", (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-writen");
- goto failed;
- }
- #endif
- /*
- * Set default mount options
- * Parse mount options
- */
- sb->u.ufs_sb.s_mount_opt = 0;
- ufs_set_opt (sb->u.ufs_sb.s_mount_opt, ONERROR_LOCK);
- if (!ufs_parse_options ((char *) data, &sb->u.ufs_sb.s_mount_opt)) {
- printk("wrong mount optionsn");
- goto failed;
- }
- if (!(sb->u.ufs_sb.s_mount_opt & UFS_MOUNT_UFSTYPE)) {
- printk("You didn't specify the type of your ufs filesystemnn"
- "mount -t ufs -o ufstype="
- "sun|sunx86|44bsd|old|hp|nextstep|netxstep-cd|openstep ...nn"
- ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, "
- "default is ufstype=oldn");
- ufs_set_opt (sb->u.ufs_sb.s_mount_opt, UFSTYPE_OLD);
- }
- sb->u.ufs_sb.s_uspi = uspi =
- kmalloc (sizeof(struct ufs_sb_private_info), GFP_KERNEL);
- if (!uspi)
- goto failed;
- /* 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 (sb->u.ufs_sb.s_mount_opt & UFS_MOUNT_UFSTYPE) {
- case UFS_MOUNT_UFSTYPE_44BSD:
- UFSD(("ufstype=44bsdn"))
- 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_SUN:
- UFSD(("ufstype=sunn"))
- 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 = 56;
- flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN;
- break;
- case UFS_MOUNT_UFSTYPE_SUNx86:
- UFSD(("ufstype=sunx86n"))
- 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 = 56;
- flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN;
- break;
- case UFS_MOUNT_UFSTYPE_OLD:
- UFSD(("ufstype=oldn"))
- 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)) {
- printk(KERN_INFO "ufstype=old is supported read-onlyn");
- sb->s_flags |= MS_RDONLY;
- }
- break;
-
- case UFS_MOUNT_UFSTYPE_NEXTSTEP:
- UFSD(("ufstype=nextstepn"))
- 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)) {
- printk(KERN_INFO "ufstype=nextstep is supported read-onlyn");
- sb->s_flags |= MS_RDONLY;
- }
- break;
-
- case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD:
- UFSD(("ufstype=nextstep-cdn"))
- 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;
- flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD;
- if (!(sb->s_flags & MS_RDONLY)) {
- printk(KERN_INFO "ufstype=nextstep-cd is supported read-onlyn");
- sb->s_flags |= MS_RDONLY;
- }
- break;
-
- case UFS_MOUNT_UFSTYPE_OPENSTEP:
- UFSD(("ufstype=openstepn"))
- 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_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD;
- if (!(sb->s_flags & MS_RDONLY)) {
- printk(KERN_INFO "ufstype=openstep is supported read-onlyn");
- sb->s_flags |= MS_RDONLY;
- }
- break;
-
- case UFS_MOUNT_UFSTYPE_HP:
- UFSD(("ufstype=hpn"))
- 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)) {
- printk(KERN_INFO "ufstype=hp is supported read-onlyn");
- sb->s_flags |= MS_RDONLY;
- }
- break;
- default:
- printk("unknown ufstypen");
- goto failed;
- }
-
- again:
- if (set_blocksize (sb->s_dev, block_size)) {
- printk(KERN_ERR "UFS: failed to set blocksizen");
- goto failed;
- }
- sb->s_blocksize = block_size;
- /*
- * read ufs super block from device
- */
- ubh = ubh_bread_uspi (uspi, sb, uspi->s_sbbase + UFS_SBLOCK/block_size, super_block_size);
- if (!ubh)
- goto failed;
-
- usb1 = ubh_get_usb_first(USPI_UBH);
- usb2 = ubh_get_usb_second(USPI_UBH);
- usb3 = ubh_get_usb_third(USPI_UBH);
- /*
- * Check ufs magic number
- */
- switch (__constant_le32_to_cpu(usb3->fs_magic)) {
- case UFS_MAGIC:
- case UFS_MAGIC_LFN:
- case UFS_MAGIC_FEA:
- case UFS_MAGIC_4GB:
- sb->u.ufs_sb.s_bytesex = BYTESEX_LE;
- goto magic_found;
- }
- switch (__constant_be32_to_cpu(usb3->fs_magic)) {
- case UFS_MAGIC:
- case UFS_MAGIC_LFN:
- case UFS_MAGIC_FEA:
- case UFS_MAGIC_4GB:
- sb->u.ufs_sb.s_bytesex = BYTESEX_BE;
- goto magic_found;
- }
- if ((((sb->u.ufs_sb.s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP)
- || ((sb->u.ufs_sb.s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD)
- || ((sb->u.ufs_sb.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;
- }
- printk("ufs_read_super: bad magic numbern");
- 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 (uspi->s_fsize & (uspi->s_fsize - 1)) {
- printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2n",
- uspi->s_fsize);
- goto failed;
- }
- if (uspi->s_fsize < 512) {
- printk(KERN_ERR "ufs_read_super: fragment size %u is too smalln",
- uspi->s_fsize);
- goto failed;
- }
- if (uspi->s_fsize > 4096) {
- printk(KERN_ERR "ufs_read_super: fragment size %u is too largen",
- uspi->s_fsize);
- goto failed;
- }
- if (uspi->s_bsize & (uspi->s_bsize - 1)) {
- printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2n",
- uspi->s_bsize);
- goto failed;
- }
- if (uspi->s_bsize < 4096) {
- printk(KERN_ERR "ufs_read_super: block size %u is too smalln",
- 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, %un", block_size, super_block_size))
- goto again;
- }
- #ifdef UFS_SUPER_DEBUG_MORE
- ufs_print_super_stuff(sb, usb1, usb2, usb3);
- #endif
- /*
- * 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_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 cleann"))
- break;
- case UFS_FSSTABLE:
- UFSD(("fs is stablen"))
- break;
- case UFS_FSOSF1:
- UFSD(("fs is DEC OSF/1n"))
- break;
- case UFS_FSACTIVE:
- printk("ufs_read_super: fs is activen");
- sb->s_flags |= MS_RDONLY;
- break;
- case UFS_FSBAD:
- printk("ufs_read_super: fs is badn");
- sb->s_flags |= MS_RDONLY;
- break;
- default:
- printk("ufs_read_super: can't grok fs_clean 0x%xn", usb1->fs_clean);
- sb->s_flags |= MS_RDONLY;
- break;
- }
- }
- else {
- printk("ufs_read_super: fs needs fsckn");
- sb->s_flags |= MS_RDONLY;
- }
- /*
- * Read ufs_super_block into internal data structures
- */
- sb->s_blocksize = fs32_to_cpu(sb, usb1->fs_fsize);
- sb->s_blocksize_bits = fs32_to_cpu(sb, usb1->fs_fshift);
- sb->s_op = &ufs_super_ops;
- sb->dq_op = NULL; /***/
- 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);
- 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);
- 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);
- 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_cpc);
- uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_contigsumsize);
- uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3);
- uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3);
- uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat);
- 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;
- 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 ((sb->u.ufs_sb.s_mount_opt & UFS_MOUNT_UFSTYPE) ==
- UFS_MOUNT_UFSTYPE_44BSD)
- uspi->s_maxsymlinklen =
- fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_maxsymlinklen);
-
- sb->u.ufs_sb.s_flags = flags;
- inode = iget(sb, UFS_ROOTINO);
- if (!inode || is_bad_inode(inode))
- goto failed;
- sb->s_root = d_alloc_root(inode);
- if (!sb->s_root)
- goto dalloc_failed;
- /*
- * Read cylinder group structures
- */
- if (!(sb->s_flags & MS_RDONLY))
- if (!ufs_read_cylinder_structures(sb))
- goto failed;
- UFSD(("EXITn"))
- return(sb);
- dalloc_failed:
- iput(inode);
- failed:
- if (ubh) ubh_brelse_uspi (uspi);
- if (uspi) kfree (uspi);
- UFSD(("EXIT (FAILED)n"))
- return(NULL);
- }
- void ufs_write_super (struct super_block * sb) {
- struct ufs_sb_private_info * uspi;
- struct ufs_super_block_first * usb1;
- struct ufs_super_block_third * usb3;
- unsigned flags;
- UFSD(("ENTERn"))
- flags = sb->u.ufs_sb.s_flags;
- uspi = sb->u.ufs_sb.s_uspi;
- usb1 = ubh_get_usb_first(USPI_UBH);
- usb3 = ubh_get_usb_third(USPI_UBH);
- if (!(sb->s_flags & MS_RDONLY)) {
- usb1->fs_time = cpu_to_fs32(sb, CURRENT_TIME);
- if ((flags & UFS_ST_MASK) == UFS_ST_SUN
- || (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);
- }
- sb->s_dirt = 0;
- UFSD(("EXITn"))
- }
- void ufs_put_super (struct super_block * sb)
- {
- struct ufs_sb_private_info * uspi;
-
- UFSD(("ENTERn"))
- uspi = sb->u.ufs_sb.s_uspi;
- if (!(sb->s_flags & MS_RDONLY))
- ufs_put_cylinder_structures (sb);
-
- ubh_brelse_uspi (uspi);
- kfree (sb->u.ufs_sb.s_uspi);
- return;
- }
- 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;
-
- uspi = sb->u.ufs_sb.s_uspi;
- flags = sb->u.ufs_sb.s_flags;
- usb1 = ubh_get_usb_first(USPI_UBH);
- usb3 = ubh_get_usb_third(USPI_UBH);
-
- /*
- * Allow the "check" option to be passed as a remount option.
- * It is not possible to change ufstype option during remount
- */
- ufstype = sb->u.ufs_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))
- 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 remountn");
- return -EINVAL;
- }
- if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
- sb->u.ufs_sb.s_mount_opt = new_mount_opt;
- return 0;
- }
-
- /*
- * fs was mouted as rw, remounting ro
- */
- if (*mount_flags & MS_RDONLY) {
- ufs_put_cylinder_structures(sb);
- usb1->fs_time = cpu_to_fs32(sb, CURRENT_TIME);
- if ((flags & UFS_ST_MASK) == UFS_ST_SUN
- || (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);
- sb->s_dirt = 0;
- sb->s_flags |= MS_RDONLY;
- }
- /*
- * fs was mounted as ro, remounting rw
- */
- else {
- #ifndef CONFIG_UFS_FS_WRITE
- printk("ufs was compiled with read-only support, "
- "can't be mounted as read-writen");
- return -EINVAL;
- #else
- if (ufstype != UFS_MOUNT_UFSTYPE_SUN &&
- ufstype != UFS_MOUNT_UFSTYPE_44BSD &&
- ufstype != UFS_MOUNT_UFSTYPE_SUNx86) {
- printk("this ufstype is read-only supportedn");
- return -EINVAL;
- }
- if (!ufs_read_cylinder_structures (sb)) {
- printk("failed during remountingn");
- return -EPERM;
- }
- sb->s_flags &= ~MS_RDONLY;
- #endif
- }
- sb->u.ufs_sb.s_mount_opt = new_mount_opt;
- return 0;
- }
- int ufs_statfs (struct super_block * sb, struct statfs * buf)
- {
- struct ufs_sb_private_info * uspi;
- struct ufs_super_block_first * usb1;
- uspi = sb->u.ufs_sb.s_uspi;
- usb1 = ubh_get_usb_first (USPI_UBH);
-
- buf->f_type = UFS_MAGIC;
- buf->f_bsize = sb->s_blocksize;
- buf->f_blocks = uspi->s_dsize;
- buf->f_bfree = ufs_blkstofrags(fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)) +
- fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree);
- buf->f_bavail = (buf->f_bfree > ((buf->f_blocks / 100) * uspi->s_minfree))
- ? (buf->f_bfree - ((buf->f_blocks / 100) * uspi->s_minfree)) : 0;
- buf->f_files = uspi->s_ncg * uspi->s_ipg;
- buf->f_ffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree);
- buf->f_namelen = UFS_MAXNAMLEN;
- return 0;
- }
- static struct super_operations ufs_super_ops = {
- read_inode: ufs_read_inode,
- write_inode: ufs_write_inode,
- delete_inode: ufs_delete_inode,
- put_super: ufs_put_super,
- write_super: ufs_write_super,
- statfs: ufs_statfs,
- remount_fs: ufs_remount,
- };
- static DECLARE_FSTYPE_DEV(ufs_fs_type, "ufs", ufs_read_super);
- static int __init init_ufs_fs(void)
- {
- return register_filesystem(&ufs_fs_type);
- }
- static void __exit exit_ufs_fs(void)
- {
- unregister_filesystem(&ufs_fs_type);
- }
- EXPORT_NO_SYMBOLS;
- module_init(init_ufs_fs)
- module_exit(exit_ufs_fs)
- MODULE_LICENSE("GPL");