11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/fs/ufs/super.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 1998 51da177e4SLinus Torvalds * Daniel Pirkl <daniel.pirkl@email.cz> 61da177e4SLinus Torvalds * Charles University, Faculty of Mathematics and Physics 71da177e4SLinus Torvalds */ 81da177e4SLinus Torvalds 91da177e4SLinus Torvalds /* Derived from 101da177e4SLinus Torvalds * 111da177e4SLinus Torvalds * linux/fs/ext2/super.c 121da177e4SLinus Torvalds * 131da177e4SLinus Torvalds * Copyright (C) 1992, 1993, 1994, 1995 141da177e4SLinus Torvalds * Remy Card (card@masi.ibp.fr) 151da177e4SLinus Torvalds * Laboratoire MASI - Institut Blaise Pascal 161da177e4SLinus Torvalds * Universite Pierre et Marie Curie (Paris VI) 171da177e4SLinus Torvalds * 181da177e4SLinus Torvalds * from 191da177e4SLinus Torvalds * 201da177e4SLinus Torvalds * linux/fs/minix/inode.c 211da177e4SLinus Torvalds * 221da177e4SLinus Torvalds * Copyright (C) 1991, 1992 Linus Torvalds 231da177e4SLinus Torvalds * 241da177e4SLinus Torvalds * Big-endian to little-endian byte-swapping/bitmaps by 251da177e4SLinus Torvalds * David S. Miller (davem@caip.rutgers.edu), 1995 261da177e4SLinus Torvalds */ 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds /* 291da177e4SLinus Torvalds * Inspired by 301da177e4SLinus Torvalds * 311da177e4SLinus Torvalds * linux/fs/ufs/super.c 321da177e4SLinus Torvalds * 331da177e4SLinus Torvalds * Copyright (C) 1996 341da177e4SLinus Torvalds * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu) 351da177e4SLinus Torvalds * Laboratory for Computer Science Research Computing Facility 361da177e4SLinus Torvalds * Rutgers, The State University of New Jersey 371da177e4SLinus Torvalds * 381da177e4SLinus Torvalds * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be) 391da177e4SLinus Torvalds * 401da177e4SLinus Torvalds * Kernel module support added on 96/04/26 by 411da177e4SLinus Torvalds * Stefan Reinauer <stepan@home.culture.mipt.ru> 421da177e4SLinus Torvalds * 431da177e4SLinus Torvalds * Module usage counts added on 96/04/29 by 441da177e4SLinus Torvalds * Gertjan van Wingerde <gertjan@cs.vu.nl> 451da177e4SLinus Torvalds * 461da177e4SLinus Torvalds * Clean swab support on 19970406 by 471da177e4SLinus Torvalds * Francois-Rene Rideau <fare@tunes.org> 481da177e4SLinus Torvalds * 491da177e4SLinus Torvalds * 4.4BSD (FreeBSD) support added on February 1st 1998 by 501da177e4SLinus Torvalds * Niels Kristian Bech Jensen <nkbj@image.dk> partially based 511da177e4SLinus Torvalds * on code by Martin von Loewis <martin@mira.isdn.cs.tu-berlin.de>. 521da177e4SLinus Torvalds * 531da177e4SLinus Torvalds * NeXTstep support added on February 5th 1998 by 541da177e4SLinus Torvalds * Niels Kristian Bech Jensen <nkbj@image.dk>. 551da177e4SLinus Torvalds * 561da177e4SLinus Torvalds * write support Daniel Pirkl <daniel.pirkl@email.cz> 1998 571da177e4SLinus Torvalds * 581da177e4SLinus Torvalds * HP/UX hfs filesystem support added by 591da177e4SLinus Torvalds * Martin K. Petersen <mkp@mkp.net>, August 1999 601da177e4SLinus Torvalds * 611da177e4SLinus Torvalds * UFS2 (of FreeBSD 5.x) support added by 621da177e4SLinus Torvalds * Niraj Kumar <niraj17@iitbombay.org>, Jan 2004 631da177e4SLinus Torvalds * 641da177e4SLinus Torvalds */ 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds #include <linux/config.h> 681da177e4SLinus Torvalds #include <linux/module.h> 691da177e4SLinus Torvalds #include <linux/bitops.h> 701da177e4SLinus Torvalds 711da177e4SLinus Torvalds #include <stdarg.h> 721da177e4SLinus Torvalds 731da177e4SLinus Torvalds #include <asm/uaccess.h> 741da177e4SLinus Torvalds #include <asm/system.h> 751da177e4SLinus Torvalds 761da177e4SLinus Torvalds #include <linux/errno.h> 771da177e4SLinus Torvalds #include <linux/fs.h> 781da177e4SLinus Torvalds #include <linux/ufs_fs.h> 791da177e4SLinus Torvalds #include <linux/slab.h> 801da177e4SLinus Torvalds #include <linux/time.h> 811da177e4SLinus Torvalds #include <linux/stat.h> 821da177e4SLinus Torvalds #include <linux/string.h> 831da177e4SLinus Torvalds #include <linux/blkdev.h> 841da177e4SLinus Torvalds #include <linux/init.h> 851da177e4SLinus Torvalds #include <linux/parser.h> 861da177e4SLinus Torvalds #include <linux/smp_lock.h> 871da177e4SLinus Torvalds #include <linux/buffer_head.h> 881da177e4SLinus Torvalds #include <linux/vfs.h> 891da177e4SLinus Torvalds 901da177e4SLinus Torvalds #include "swab.h" 911da177e4SLinus Torvalds #include "util.h" 921da177e4SLinus Torvalds 93abf5d15fSEvgeniy Dushistov #ifdef CONFIG_UFS_DEBUG 941da177e4SLinus Torvalds /* 951da177e4SLinus Torvalds * Print contents of ufs_super_block, useful for debugging 961da177e4SLinus Torvalds */ 971da177e4SLinus Torvalds void ufs_print_super_stuff(struct super_block *sb, 981da177e4SLinus Torvalds struct ufs_super_block_first * usb1, 991da177e4SLinus Torvalds struct ufs_super_block_second * usb2, 1001da177e4SLinus Torvalds struct ufs_super_block_third * usb3) 1011da177e4SLinus Torvalds { 1021da177e4SLinus Torvalds printk("ufs_print_super_stuff\n"); 10396710b29SAndrew Morton printk("size of usb: %zu\n", sizeof(struct ufs_super_block)); 1041da177e4SLinus Torvalds printk(" magic: 0x%x\n", fs32_to_cpu(sb, usb3->fs_magic)); 1051da177e4SLinus Torvalds printk(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno)); 1061da177e4SLinus Torvalds printk(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno)); 1071da177e4SLinus Torvalds printk(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno)); 1081da177e4SLinus Torvalds printk(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno)); 1091da177e4SLinus Torvalds printk(" cgoffset: %u\n", fs32_to_cpu(sb, usb1->fs_cgoffset)); 1101da177e4SLinus Torvalds printk(" ~cgmask: 0x%x\n", ~fs32_to_cpu(sb, usb1->fs_cgmask)); 1111da177e4SLinus Torvalds printk(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size)); 1121da177e4SLinus Torvalds printk(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize)); 1131da177e4SLinus Torvalds printk(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg)); 1141da177e4SLinus Torvalds printk(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize)); 1151da177e4SLinus Torvalds printk(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize)); 1161da177e4SLinus Torvalds printk(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag)); 1171da177e4SLinus Torvalds printk(" fragshift: %u\n", fs32_to_cpu(sb, usb1->fs_fragshift)); 1181da177e4SLinus Torvalds printk(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask)); 1191da177e4SLinus Torvalds printk(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift)); 1201da177e4SLinus Torvalds printk(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize)); 1211da177e4SLinus Torvalds printk(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc)); 1221da177e4SLinus Torvalds printk(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg)); 1231da177e4SLinus Torvalds printk(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg)); 1241da177e4SLinus Torvalds printk(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg)); 1251da177e4SLinus Torvalds printk(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr)); 1261da177e4SLinus Torvalds printk(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize)); 1271da177e4SLinus Torvalds printk(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize)); 1281da177e4SLinus Torvalds printk(" fstodb: %u\n", fs32_to_cpu(sb, usb1->fs_fsbtodb)); 1291da177e4SLinus Torvalds printk(" contigsumsize: %d\n", fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_contigsumsize)); 1301da177e4SLinus Torvalds printk(" postblformat: %u\n", fs32_to_cpu(sb, usb3->fs_postblformat)); 1311da177e4SLinus Torvalds printk(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos)); 1321da177e4SLinus Torvalds printk(" ndir %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir)); 1331da177e4SLinus Torvalds printk(" nifree %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree)); 1341da177e4SLinus Torvalds printk(" nbfree %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)); 1351da177e4SLinus Torvalds printk(" nffree %u\n", fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree)); 1361da177e4SLinus Torvalds printk("\n"); 1371da177e4SLinus Torvalds } 1381da177e4SLinus Torvalds 1391da177e4SLinus Torvalds /* 1401da177e4SLinus Torvalds * Print contents of ufs2 ufs_super_block, useful for debugging 1411da177e4SLinus Torvalds */ 1421da177e4SLinus Torvalds void ufs2_print_super_stuff( 1431da177e4SLinus Torvalds struct super_block *sb, 1441da177e4SLinus Torvalds struct ufs_super_block *usb) 1451da177e4SLinus Torvalds { 1461da177e4SLinus Torvalds printk("ufs_print_super_stuff\n"); 14796710b29SAndrew Morton printk("size of usb: %zu\n", sizeof(struct ufs_super_block)); 1481da177e4SLinus Torvalds printk(" magic: 0x%x\n", fs32_to_cpu(sb, usb->fs_magic)); 149abf5d15fSEvgeniy Dushistov printk(" fs_size: %llu\n", 150abf5d15fSEvgeniy Dushistov (unsigned long long)fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_size)); 151abf5d15fSEvgeniy Dushistov printk(" fs_dsize: %llu\n", 152abf5d15fSEvgeniy Dushistov (unsigned long long)fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_dsize)); 153abf5d15fSEvgeniy Dushistov printk(" bsize: %u\n", fs32_to_cpu(sb, usb->fs_bsize)); 154abf5d15fSEvgeniy Dushistov printk(" fsize: %u\n", fs32_to_cpu(sb, usb->fs_fsize)); 1551da177e4SLinus Torvalds printk(" fs_volname: %s\n", usb->fs_u11.fs_u2.fs_volname); 1561da177e4SLinus Torvalds printk(" fs_fsmnt: %s\n", usb->fs_u11.fs_u2.fs_fsmnt); 157abf5d15fSEvgeniy Dushistov printk(" fs_sblockloc: %llu\n", 158abf5d15fSEvgeniy Dushistov (unsigned long long)fs64_to_cpu(sb, 1591da177e4SLinus Torvalds usb->fs_u11.fs_u2.fs_sblockloc)); 160abf5d15fSEvgeniy Dushistov printk(" cs_ndir(No of dirs): %llu\n", 161abf5d15fSEvgeniy Dushistov (unsigned long long)fs64_to_cpu(sb, 1621da177e4SLinus Torvalds usb->fs_u11.fs_u2.fs_cstotal.cs_ndir)); 163abf5d15fSEvgeniy Dushistov printk(" cs_nbfree(No of free blocks): %llu\n", 164abf5d15fSEvgeniy Dushistov (unsigned long long)fs64_to_cpu(sb, 1651da177e4SLinus Torvalds usb->fs_u11.fs_u2.fs_cstotal.cs_nbfree)); 1661da177e4SLinus Torvalds printk("\n"); 1671da177e4SLinus Torvalds } 1681da177e4SLinus Torvalds 1691da177e4SLinus Torvalds /* 1701da177e4SLinus Torvalds * Print contents of ufs_cylinder_group, useful for debugging 1711da177e4SLinus Torvalds */ 1721da177e4SLinus Torvalds void ufs_print_cylinder_stuff(struct super_block *sb, struct ufs_cylinder_group *cg) 1731da177e4SLinus Torvalds { 1741da177e4SLinus Torvalds printk("\nufs_print_cylinder_stuff\n"); 17596710b29SAndrew Morton printk("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group)); 1761da177e4SLinus Torvalds printk(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic)); 1771da177e4SLinus Torvalds printk(" time: %u\n", fs32_to_cpu(sb, cg->cg_time)); 1781da177e4SLinus Torvalds printk(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx)); 1791da177e4SLinus Torvalds printk(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl)); 1801da177e4SLinus Torvalds printk(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk)); 1811da177e4SLinus Torvalds printk(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk)); 1821da177e4SLinus Torvalds printk(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir)); 1831da177e4SLinus Torvalds printk(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree)); 1841da177e4SLinus Torvalds printk(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree)); 1851da177e4SLinus Torvalds printk(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree)); 1861da177e4SLinus Torvalds printk(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor)); 1871da177e4SLinus Torvalds printk(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor)); 1881da177e4SLinus Torvalds printk(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor)); 1891da177e4SLinus Torvalds printk(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n", 1901da177e4SLinus Torvalds fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]), 1911da177e4SLinus Torvalds fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]), 1921da177e4SLinus Torvalds fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]), 1931da177e4SLinus Torvalds fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7])); 1941da177e4SLinus Torvalds printk(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff)); 1951da177e4SLinus Torvalds printk(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff)); 1961da177e4SLinus Torvalds printk(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff)); 1971da177e4SLinus Torvalds printk(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff)); 1981da177e4SLinus Torvalds printk(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff)); 1991da177e4SLinus Torvalds printk(" clustersumoff %u\n", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff)); 2001da177e4SLinus Torvalds printk(" clusteroff %u\n", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff)); 2011da177e4SLinus Torvalds printk(" nclusterblks %u\n", fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks)); 2021da177e4SLinus Torvalds printk("\n"); 2031da177e4SLinus Torvalds } 204abf5d15fSEvgeniy Dushistov #endif /* CONFIG_UFS_DEBUG */ 2051da177e4SLinus Torvalds 2061da177e4SLinus Torvalds static struct super_operations ufs_super_ops; 2071da177e4SLinus Torvalds 2081da177e4SLinus Torvalds static char error_buf[1024]; 2091da177e4SLinus Torvalds 2101da177e4SLinus Torvalds void ufs_error (struct super_block * sb, const char * function, 2111da177e4SLinus Torvalds const char * fmt, ...) 2121da177e4SLinus Torvalds { 2131da177e4SLinus Torvalds struct ufs_sb_private_info * uspi; 2141da177e4SLinus Torvalds struct ufs_super_block_first * usb1; 2151da177e4SLinus Torvalds va_list args; 2161da177e4SLinus Torvalds 2171da177e4SLinus Torvalds uspi = UFS_SB(sb)->s_uspi; 2187b4ee73eSEvgeniy usb1 = ubh_get_usb_first(uspi); 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 2211da177e4SLinus Torvalds usb1->fs_clean = UFS_FSBAD; 2229695ef16SEvgeniy Dushistov ubh_mark_buffer_dirty(USPI_UBH(uspi)); 2231da177e4SLinus Torvalds sb->s_dirt = 1; 2241da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 2251da177e4SLinus Torvalds } 2261da177e4SLinus Torvalds va_start (args, fmt); 2271da177e4SLinus Torvalds vsprintf (error_buf, fmt, args); 2281da177e4SLinus Torvalds va_end (args); 2291da177e4SLinus Torvalds switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) { 2301da177e4SLinus Torvalds case UFS_MOUNT_ONERROR_PANIC: 2311da177e4SLinus Torvalds panic ("UFS-fs panic (device %s): %s: %s\n", 2321da177e4SLinus Torvalds sb->s_id, function, error_buf); 2331da177e4SLinus Torvalds 2341da177e4SLinus Torvalds case UFS_MOUNT_ONERROR_LOCK: 2351da177e4SLinus Torvalds case UFS_MOUNT_ONERROR_UMOUNT: 2361da177e4SLinus Torvalds case UFS_MOUNT_ONERROR_REPAIR: 2371da177e4SLinus Torvalds printk (KERN_CRIT "UFS-fs error (device %s): %s: %s\n", 2381da177e4SLinus Torvalds sb->s_id, function, error_buf); 2391da177e4SLinus Torvalds } 2401da177e4SLinus Torvalds } 2411da177e4SLinus Torvalds 2421da177e4SLinus Torvalds void ufs_panic (struct super_block * sb, const char * function, 2431da177e4SLinus Torvalds const char * fmt, ...) 2441da177e4SLinus Torvalds { 2451da177e4SLinus Torvalds struct ufs_sb_private_info * uspi; 2461da177e4SLinus Torvalds struct ufs_super_block_first * usb1; 2471da177e4SLinus Torvalds va_list args; 2481da177e4SLinus Torvalds 2491da177e4SLinus Torvalds uspi = UFS_SB(sb)->s_uspi; 2507b4ee73eSEvgeniy usb1 = ubh_get_usb_first(uspi); 2511da177e4SLinus Torvalds 2521da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 2531da177e4SLinus Torvalds usb1->fs_clean = UFS_FSBAD; 2549695ef16SEvgeniy Dushistov ubh_mark_buffer_dirty(USPI_UBH(uspi)); 2551da177e4SLinus Torvalds sb->s_dirt = 1; 2561da177e4SLinus Torvalds } 2571da177e4SLinus Torvalds va_start (args, fmt); 2581da177e4SLinus Torvalds vsprintf (error_buf, fmt, args); 2591da177e4SLinus Torvalds va_end (args); 2601da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 2611da177e4SLinus Torvalds printk (KERN_CRIT "UFS-fs panic (device %s): %s: %s\n", 2621da177e4SLinus Torvalds sb->s_id, function, error_buf); 2631da177e4SLinus Torvalds } 2641da177e4SLinus Torvalds 2651da177e4SLinus Torvalds void ufs_warning (struct super_block * sb, const char * function, 2661da177e4SLinus Torvalds const char * fmt, ...) 2671da177e4SLinus Torvalds { 2681da177e4SLinus Torvalds va_list args; 2691da177e4SLinus Torvalds 2701da177e4SLinus Torvalds va_start (args, fmt); 2711da177e4SLinus Torvalds vsprintf (error_buf, fmt, args); 2721da177e4SLinus Torvalds va_end (args); 2731da177e4SLinus Torvalds printk (KERN_WARNING "UFS-fs warning (device %s): %s: %s\n", 2741da177e4SLinus Torvalds sb->s_id, function, error_buf); 2751da177e4SLinus Torvalds } 2761da177e4SLinus Torvalds 2771da177e4SLinus Torvalds enum { 2781da177e4SLinus Torvalds Opt_type_old, Opt_type_sunx86, Opt_type_sun, Opt_type_44bsd, 2791da177e4SLinus Torvalds Opt_type_ufs2, Opt_type_hp, Opt_type_nextstepcd, Opt_type_nextstep, 2801da177e4SLinus Torvalds Opt_type_openstep, Opt_onerror_panic, Opt_onerror_lock, 2811da177e4SLinus Torvalds Opt_onerror_umount, Opt_onerror_repair, Opt_err 2821da177e4SLinus Torvalds }; 2831da177e4SLinus Torvalds 2841da177e4SLinus Torvalds static match_table_t tokens = { 2851da177e4SLinus Torvalds {Opt_type_old, "ufstype=old"}, 2861da177e4SLinus Torvalds {Opt_type_sunx86, "ufstype=sunx86"}, 2871da177e4SLinus Torvalds {Opt_type_sun, "ufstype=sun"}, 2881da177e4SLinus Torvalds {Opt_type_44bsd, "ufstype=44bsd"}, 2891da177e4SLinus Torvalds {Opt_type_ufs2, "ufstype=ufs2"}, 2901da177e4SLinus Torvalds {Opt_type_ufs2, "ufstype=5xbsd"}, 2911da177e4SLinus Torvalds {Opt_type_hp, "ufstype=hp"}, 2921da177e4SLinus Torvalds {Opt_type_nextstepcd, "ufstype=nextstep-cd"}, 2931da177e4SLinus Torvalds {Opt_type_nextstep, "ufstype=nextstep"}, 2941da177e4SLinus Torvalds {Opt_type_openstep, "ufstype=openstep"}, 2951da177e4SLinus Torvalds {Opt_onerror_panic, "onerror=panic"}, 2961da177e4SLinus Torvalds {Opt_onerror_lock, "onerror=lock"}, 2971da177e4SLinus Torvalds {Opt_onerror_umount, "onerror=umount"}, 2981da177e4SLinus Torvalds {Opt_onerror_repair, "onerror=repair"}, 2991da177e4SLinus Torvalds {Opt_err, NULL} 3001da177e4SLinus Torvalds }; 3011da177e4SLinus Torvalds 3021da177e4SLinus Torvalds static int ufs_parse_options (char * options, unsigned * mount_options) 3031da177e4SLinus Torvalds { 3041da177e4SLinus Torvalds char * p; 3051da177e4SLinus Torvalds 306abf5d15fSEvgeniy Dushistov UFSD("ENTER\n"); 3071da177e4SLinus Torvalds 3081da177e4SLinus Torvalds if (!options) 3091da177e4SLinus Torvalds return 1; 3101da177e4SLinus Torvalds 3111da177e4SLinus Torvalds while ((p = strsep(&options, ",")) != NULL) { 3121da177e4SLinus Torvalds substring_t args[MAX_OPT_ARGS]; 3131da177e4SLinus Torvalds int token; 3141da177e4SLinus Torvalds if (!*p) 3151da177e4SLinus Torvalds continue; 3161da177e4SLinus Torvalds 3171da177e4SLinus Torvalds token = match_token(p, tokens, args); 3181da177e4SLinus Torvalds switch (token) { 3191da177e4SLinus Torvalds case Opt_type_old: 3201da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3211da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_OLD); 3221da177e4SLinus Torvalds break; 3231da177e4SLinus Torvalds case Opt_type_sunx86: 3241da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3251da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_SUNx86); 3261da177e4SLinus Torvalds break; 3271da177e4SLinus Torvalds case Opt_type_sun: 3281da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3291da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_SUN); 3301da177e4SLinus Torvalds break; 3311da177e4SLinus Torvalds case Opt_type_44bsd: 3321da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3331da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_44BSD); 3341da177e4SLinus Torvalds break; 3351da177e4SLinus Torvalds case Opt_type_ufs2: 3361da177e4SLinus Torvalds ufs_clear_opt(*mount_options, UFSTYPE); 3371da177e4SLinus Torvalds ufs_set_opt(*mount_options, UFSTYPE_UFS2); 3381da177e4SLinus Torvalds break; 3391da177e4SLinus Torvalds case Opt_type_hp: 3401da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3411da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_HP); 3421da177e4SLinus Torvalds break; 3431da177e4SLinus Torvalds case Opt_type_nextstepcd: 3441da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3451da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD); 3461da177e4SLinus Torvalds break; 3471da177e4SLinus Torvalds case Opt_type_nextstep: 3481da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3491da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP); 3501da177e4SLinus Torvalds break; 3511da177e4SLinus Torvalds case Opt_type_openstep: 3521da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3531da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP); 3541da177e4SLinus Torvalds break; 3551da177e4SLinus Torvalds case Opt_onerror_panic: 3561da177e4SLinus Torvalds ufs_clear_opt (*mount_options, ONERROR); 3571da177e4SLinus Torvalds ufs_set_opt (*mount_options, ONERROR_PANIC); 3581da177e4SLinus Torvalds break; 3591da177e4SLinus Torvalds case Opt_onerror_lock: 3601da177e4SLinus Torvalds ufs_clear_opt (*mount_options, ONERROR); 3611da177e4SLinus Torvalds ufs_set_opt (*mount_options, ONERROR_LOCK); 3621da177e4SLinus Torvalds break; 3631da177e4SLinus Torvalds case Opt_onerror_umount: 3641da177e4SLinus Torvalds ufs_clear_opt (*mount_options, ONERROR); 3651da177e4SLinus Torvalds ufs_set_opt (*mount_options, ONERROR_UMOUNT); 3661da177e4SLinus Torvalds break; 3671da177e4SLinus Torvalds case Opt_onerror_repair: 3681da177e4SLinus Torvalds printk("UFS-fs: Unable to do repair on error, " 3691da177e4SLinus Torvalds "will lock lock instead\n"); 3701da177e4SLinus Torvalds ufs_clear_opt (*mount_options, ONERROR); 3711da177e4SLinus Torvalds ufs_set_opt (*mount_options, ONERROR_REPAIR); 3721da177e4SLinus Torvalds break; 3731da177e4SLinus Torvalds default: 3741da177e4SLinus Torvalds printk("UFS-fs: Invalid option: \"%s\" " 3751da177e4SLinus Torvalds "or missing value\n", p); 3761da177e4SLinus Torvalds return 0; 3771da177e4SLinus Torvalds } 3781da177e4SLinus Torvalds } 3791da177e4SLinus Torvalds return 1; 3801da177e4SLinus Torvalds } 3811da177e4SLinus Torvalds 3821da177e4SLinus Torvalds /* 3831da177e4SLinus Torvalds * Read on-disk structures associated with cylinder groups 3841da177e4SLinus Torvalds */ 385e295cfcbSEvgeniy Dushistov static int ufs_read_cylinder_structures (struct super_block *sb) 386e295cfcbSEvgeniy Dushistov { 3871da177e4SLinus Torvalds struct ufs_sb_info * sbi = UFS_SB(sb); 3881da177e4SLinus Torvalds struct ufs_sb_private_info * uspi; 3891da177e4SLinus Torvalds struct ufs_super_block *usb; 3901da177e4SLinus Torvalds struct ufs_buffer_head * ubh; 3911da177e4SLinus Torvalds unsigned char * base, * space; 3921da177e4SLinus Torvalds unsigned size, blks, i; 3931da177e4SLinus Torvalds unsigned flags = 0; 3941da177e4SLinus Torvalds 395abf5d15fSEvgeniy Dushistov UFSD("ENTER\n"); 3961da177e4SLinus Torvalds 3971da177e4SLinus Torvalds uspi = sbi->s_uspi; 3981da177e4SLinus Torvalds 3991da177e4SLinus Torvalds usb = (struct ufs_super_block *) 4001da177e4SLinus Torvalds ((struct ufs_buffer_head *)uspi)->bh[0]->b_data; 4011da177e4SLinus Torvalds 4021da177e4SLinus Torvalds flags = UFS_SB(sb)->s_flags; 4031da177e4SLinus Torvalds 4041da177e4SLinus Torvalds /* 4051da177e4SLinus Torvalds * Read cs structures from (usually) first data block 4061da177e4SLinus Torvalds * on the device. 4071da177e4SLinus Torvalds */ 4081da177e4SLinus Torvalds size = uspi->s_cssize; 4091da177e4SLinus Torvalds blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; 4101da177e4SLinus Torvalds base = space = kmalloc(size, GFP_KERNEL); 4111da177e4SLinus Torvalds if (!base) 4121da177e4SLinus Torvalds goto failed; 413e295cfcbSEvgeniy Dushistov sbi->s_csp = (struct ufs_csum *)space; 4141da177e4SLinus Torvalds for (i = 0; i < blks; i += uspi->s_fpb) { 4151da177e4SLinus Torvalds size = uspi->s_bsize; 4161da177e4SLinus Torvalds if (i + uspi->s_fpb > blks) 4171da177e4SLinus Torvalds size = (blks - i) * uspi->s_fsize; 4181da177e4SLinus Torvalds 4197b4ee73eSEvgeniy if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 4201da177e4SLinus Torvalds ubh = ubh_bread(sb, 4211da177e4SLinus Torvalds fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_csaddr) + i, size); 4227b4ee73eSEvgeniy else 4231da177e4SLinus Torvalds ubh = ubh_bread(sb, uspi->s_csaddr + i, size); 4247b4ee73eSEvgeniy 4251da177e4SLinus Torvalds if (!ubh) 4261da177e4SLinus Torvalds goto failed; 4277b4ee73eSEvgeniy 4281da177e4SLinus Torvalds ubh_ubhcpymem (space, ubh, size); 4297b4ee73eSEvgeniy 4301da177e4SLinus Torvalds space += size; 4311da177e4SLinus Torvalds ubh_brelse (ubh); 4321da177e4SLinus Torvalds ubh = NULL; 4331da177e4SLinus Torvalds } 4341da177e4SLinus Torvalds 4351da177e4SLinus Torvalds /* 4361da177e4SLinus Torvalds * Read cylinder group (we read only first fragment from block 4371da177e4SLinus Torvalds * at this time) and prepare internal data structures for cg caching. 4381da177e4SLinus Torvalds */ 4391da177e4SLinus Torvalds if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_KERNEL))) 4401da177e4SLinus Torvalds goto failed; 4411da177e4SLinus Torvalds for (i = 0; i < uspi->s_ncg; i++) 4421da177e4SLinus Torvalds sbi->s_ucg[i] = NULL; 4431da177e4SLinus Torvalds for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { 4441da177e4SLinus Torvalds sbi->s_ucpi[i] = NULL; 4451da177e4SLinus Torvalds sbi->s_cgno[i] = UFS_CGNO_EMPTY; 4461da177e4SLinus Torvalds } 4471da177e4SLinus Torvalds for (i = 0; i < uspi->s_ncg; i++) { 448abf5d15fSEvgeniy Dushistov UFSD("read cg %u\n", i); 4491da177e4SLinus Torvalds if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i)))) 4501da177e4SLinus Torvalds goto failed; 4511da177e4SLinus Torvalds if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data)) 4521da177e4SLinus Torvalds goto failed; 453abf5d15fSEvgeniy Dushistov #ifdef CONFIG_UFS_DEBUG 4541da177e4SLinus Torvalds ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data); 4551da177e4SLinus Torvalds #endif 4561da177e4SLinus Torvalds } 4571da177e4SLinus Torvalds for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { 4581da177e4SLinus Torvalds if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_KERNEL))) 4591da177e4SLinus Torvalds goto failed; 4601da177e4SLinus Torvalds sbi->s_cgno[i] = UFS_CGNO_EMPTY; 4611da177e4SLinus Torvalds } 4621da177e4SLinus Torvalds sbi->s_cg_loaded = 0; 463abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 4641da177e4SLinus Torvalds return 1; 4651da177e4SLinus Torvalds 4661da177e4SLinus Torvalds failed: 467f99d49adSJesper Juhl kfree (base); 4681da177e4SLinus Torvalds if (sbi->s_ucg) { 4691da177e4SLinus Torvalds for (i = 0; i < uspi->s_ncg; i++) 470f99d49adSJesper Juhl if (sbi->s_ucg[i]) 471f99d49adSJesper Juhl brelse (sbi->s_ucg[i]); 4721da177e4SLinus Torvalds kfree (sbi->s_ucg); 4731da177e4SLinus Torvalds for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) 474f99d49adSJesper Juhl kfree (sbi->s_ucpi[i]); 4751da177e4SLinus Torvalds } 476abf5d15fSEvgeniy Dushistov UFSD("EXIT (FAILED)\n"); 4771da177e4SLinus Torvalds return 0; 4781da177e4SLinus Torvalds } 4791da177e4SLinus Torvalds 4801da177e4SLinus Torvalds /* 4811da177e4SLinus Torvalds * Put on-disk structures associated with cylinder groups and 4821da177e4SLinus Torvalds * write them back to disk 4831da177e4SLinus Torvalds */ 484e295cfcbSEvgeniy Dushistov static void ufs_put_cylinder_structures (struct super_block *sb) 485e295cfcbSEvgeniy Dushistov { 4861da177e4SLinus Torvalds struct ufs_sb_info * sbi = UFS_SB(sb); 4871da177e4SLinus Torvalds struct ufs_sb_private_info * uspi; 4881da177e4SLinus Torvalds struct ufs_buffer_head * ubh; 4891da177e4SLinus Torvalds unsigned char * base, * space; 4901da177e4SLinus Torvalds unsigned blks, size, i; 4911da177e4SLinus Torvalds 492abf5d15fSEvgeniy Dushistov UFSD("ENTER\n"); 4931da177e4SLinus Torvalds 4941da177e4SLinus Torvalds uspi = sbi->s_uspi; 4951da177e4SLinus Torvalds 4961da177e4SLinus Torvalds size = uspi->s_cssize; 4971da177e4SLinus Torvalds blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; 498e295cfcbSEvgeniy Dushistov base = space = (char*) sbi->s_csp; 4991da177e4SLinus Torvalds for (i = 0; i < blks; i += uspi->s_fpb) { 5001da177e4SLinus Torvalds size = uspi->s_bsize; 5011da177e4SLinus Torvalds if (i + uspi->s_fpb > blks) 5021da177e4SLinus Torvalds size = (blks - i) * uspi->s_fsize; 5031da177e4SLinus Torvalds ubh = ubh_bread(sb, uspi->s_csaddr + i, size); 5041da177e4SLinus Torvalds ubh_memcpyubh (ubh, space, size); 5051da177e4SLinus Torvalds space += size; 5061da177e4SLinus Torvalds ubh_mark_buffer_uptodate (ubh, 1); 5071da177e4SLinus Torvalds ubh_mark_buffer_dirty (ubh); 5081da177e4SLinus Torvalds ubh_brelse (ubh); 5091da177e4SLinus Torvalds } 5101da177e4SLinus Torvalds for (i = 0; i < sbi->s_cg_loaded; i++) { 5111da177e4SLinus Torvalds ufs_put_cylinder (sb, i); 5121da177e4SLinus Torvalds kfree (sbi->s_ucpi[i]); 5131da177e4SLinus Torvalds } 5141da177e4SLinus Torvalds for (; i < UFS_MAX_GROUP_LOADED; i++) 5151da177e4SLinus Torvalds kfree (sbi->s_ucpi[i]); 5161da177e4SLinus Torvalds for (i = 0; i < uspi->s_ncg; i++) 5171da177e4SLinus Torvalds brelse (sbi->s_ucg[i]); 5181da177e4SLinus Torvalds kfree (sbi->s_ucg); 5191da177e4SLinus Torvalds kfree (base); 520abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 5211da177e4SLinus Torvalds } 5221da177e4SLinus Torvalds 5231da177e4SLinus Torvalds static int ufs_fill_super(struct super_block *sb, void *data, int silent) 5241da177e4SLinus Torvalds { 5251da177e4SLinus Torvalds struct ufs_sb_info * sbi; 5261da177e4SLinus Torvalds struct ufs_sb_private_info * uspi; 5271da177e4SLinus Torvalds struct ufs_super_block_first * usb1; 5281da177e4SLinus Torvalds struct ufs_super_block_second * usb2; 5291da177e4SLinus Torvalds struct ufs_super_block_third * usb3; 5301da177e4SLinus Torvalds struct ufs_super_block *usb; 5311da177e4SLinus Torvalds struct ufs_buffer_head * ubh; 5321da177e4SLinus Torvalds struct inode *inode; 5331da177e4SLinus Torvalds unsigned block_size, super_block_size; 5341da177e4SLinus Torvalds unsigned flags; 5357b4ee73eSEvgeniy unsigned super_block_offset; 5361da177e4SLinus Torvalds 5371da177e4SLinus Torvalds uspi = NULL; 5381da177e4SLinus Torvalds ubh = NULL; 5391da177e4SLinus Torvalds flags = 0; 5401da177e4SLinus Torvalds 541abf5d15fSEvgeniy Dushistov UFSD("ENTER\n"); 5421da177e4SLinus Torvalds 5431da177e4SLinus Torvalds sbi = kmalloc(sizeof(struct ufs_sb_info), GFP_KERNEL); 5441da177e4SLinus Torvalds if (!sbi) 5451da177e4SLinus Torvalds goto failed_nomem; 5461da177e4SLinus Torvalds sb->s_fs_info = sbi; 5471da177e4SLinus Torvalds memset(sbi, 0, sizeof(struct ufs_sb_info)); 5481da177e4SLinus Torvalds 549abf5d15fSEvgeniy Dushistov UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY)); 5501da177e4SLinus Torvalds 5511da177e4SLinus Torvalds #ifndef CONFIG_UFS_FS_WRITE 5521da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 5531da177e4SLinus Torvalds printk("ufs was compiled with read-only support, " 5541da177e4SLinus Torvalds "can't be mounted as read-write\n"); 5551da177e4SLinus Torvalds goto failed; 5561da177e4SLinus Torvalds } 5571da177e4SLinus Torvalds #endif 5581da177e4SLinus Torvalds /* 5591da177e4SLinus Torvalds * Set default mount options 5601da177e4SLinus Torvalds * Parse mount options 5611da177e4SLinus Torvalds */ 5621da177e4SLinus Torvalds sbi->s_mount_opt = 0; 5631da177e4SLinus Torvalds ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK); 5641da177e4SLinus Torvalds if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) { 5651da177e4SLinus Torvalds printk("wrong mount options\n"); 5661da177e4SLinus Torvalds goto failed; 5671da177e4SLinus Torvalds } 5681da177e4SLinus Torvalds if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) { 5691da177e4SLinus Torvalds if (!silent) 5701da177e4SLinus Torvalds printk("You didn't specify the type of your ufs filesystem\n\n" 5711da177e4SLinus Torvalds "mount -t ufs -o ufstype=" 572c690a722SMichael Owen "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n" 5731da177e4SLinus Torvalds ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, " 5741da177e4SLinus Torvalds "default is ufstype=old\n"); 5751da177e4SLinus Torvalds ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD); 5761da177e4SLinus Torvalds } 5771da177e4SLinus Torvalds 5781da177e4SLinus Torvalds sbi->s_uspi = uspi = 5791da177e4SLinus Torvalds kmalloc (sizeof(struct ufs_sb_private_info), GFP_KERNEL); 5801da177e4SLinus Torvalds if (!uspi) 5811da177e4SLinus Torvalds goto failed; 5821da177e4SLinus Torvalds 5837b4ee73eSEvgeniy super_block_offset=UFS_SBLOCK; 5847b4ee73eSEvgeniy 5851da177e4SLinus Torvalds /* Keep 2Gig file limit. Some UFS variants need to override 5861da177e4SLinus Torvalds this but as I don't know which I'll let those in the know loosen 5871da177e4SLinus Torvalds the rules */ 5881da177e4SLinus Torvalds switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) { 5891da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_44BSD: 590abf5d15fSEvgeniy Dushistov UFSD("ufstype=44bsd\n"); 5911da177e4SLinus Torvalds uspi->s_fsize = block_size = 512; 5921da177e4SLinus Torvalds uspi->s_fmask = ~(512 - 1); 5931da177e4SLinus Torvalds uspi->s_fshift = 9; 5941da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 1536; 5951da177e4SLinus Torvalds uspi->s_sbbase = 0; 5961da177e4SLinus Torvalds flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; 5971da177e4SLinus Torvalds break; 5981da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_UFS2: 599abf5d15fSEvgeniy Dushistov UFSD("ufstype=ufs2\n"); 6007b4ee73eSEvgeniy super_block_offset=SBLOCK_UFS2; 6011da177e4SLinus Torvalds uspi->s_fsize = block_size = 512; 6021da177e4SLinus Torvalds uspi->s_fmask = ~(512 - 1); 6031da177e4SLinus Torvalds uspi->s_fshift = 9; 6041da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 1536; 6051da177e4SLinus Torvalds uspi->s_sbbase = 0; 6061da177e4SLinus Torvalds flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; 6071da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 6081da177e4SLinus Torvalds printk(KERN_INFO "ufstype=ufs2 is supported read-only\n"); 6091da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 6101da177e4SLinus Torvalds } 6111da177e4SLinus Torvalds break; 6121da177e4SLinus Torvalds 6131da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_SUN: 614abf5d15fSEvgeniy Dushistov UFSD("ufstype=sun\n"); 6151da177e4SLinus Torvalds uspi->s_fsize = block_size = 1024; 6161da177e4SLinus Torvalds uspi->s_fmask = ~(1024 - 1); 6171da177e4SLinus Torvalds uspi->s_fshift = 10; 6181da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 2048; 6191da177e4SLinus Torvalds uspi->s_sbbase = 0; 6201da177e4SLinus Torvalds uspi->s_maxsymlinklen = 56; 6211da177e4SLinus Torvalds flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN; 6221da177e4SLinus Torvalds break; 6231da177e4SLinus Torvalds 6241da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_SUNx86: 625abf5d15fSEvgeniy Dushistov UFSD("ufstype=sunx86\n"); 6261da177e4SLinus Torvalds uspi->s_fsize = block_size = 1024; 6271da177e4SLinus Torvalds uspi->s_fmask = ~(1024 - 1); 6281da177e4SLinus Torvalds uspi->s_fshift = 10; 6291da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 2048; 6301da177e4SLinus Torvalds uspi->s_sbbase = 0; 6311da177e4SLinus Torvalds uspi->s_maxsymlinklen = 56; 6321da177e4SLinus Torvalds flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN; 6331da177e4SLinus Torvalds break; 6341da177e4SLinus Torvalds 6351da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_OLD: 636abf5d15fSEvgeniy Dushistov UFSD("ufstype=old\n"); 6371da177e4SLinus Torvalds uspi->s_fsize = block_size = 1024; 6381da177e4SLinus Torvalds uspi->s_fmask = ~(1024 - 1); 6391da177e4SLinus Torvalds uspi->s_fshift = 10; 6401da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 2048; 6411da177e4SLinus Torvalds uspi->s_sbbase = 0; 6421da177e4SLinus Torvalds flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; 6431da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 6441da177e4SLinus Torvalds if (!silent) 6451da177e4SLinus Torvalds printk(KERN_INFO "ufstype=old is supported read-only\n"); 6461da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 6471da177e4SLinus Torvalds } 6481da177e4SLinus Torvalds break; 6491da177e4SLinus Torvalds 6501da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_NEXTSTEP: 651abf5d15fSEvgeniy Dushistov UFSD("ufstype=nextstep\n"); 6521da177e4SLinus Torvalds uspi->s_fsize = block_size = 1024; 6531da177e4SLinus Torvalds uspi->s_fmask = ~(1024 - 1); 6541da177e4SLinus Torvalds uspi->s_fshift = 10; 6551da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 2048; 6561da177e4SLinus Torvalds uspi->s_sbbase = 0; 6571da177e4SLinus Torvalds flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; 6581da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 6591da177e4SLinus Torvalds if (!silent) 6601da177e4SLinus Torvalds printk(KERN_INFO "ufstype=nextstep is supported read-only\n"); 6611da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 6621da177e4SLinus Torvalds } 6631da177e4SLinus Torvalds break; 6641da177e4SLinus Torvalds 6651da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD: 666abf5d15fSEvgeniy Dushistov UFSD("ufstype=nextstep-cd\n"); 6671da177e4SLinus Torvalds uspi->s_fsize = block_size = 2048; 6681da177e4SLinus Torvalds uspi->s_fmask = ~(2048 - 1); 6691da177e4SLinus Torvalds uspi->s_fshift = 11; 6701da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 2048; 6711da177e4SLinus Torvalds uspi->s_sbbase = 0; 6721da177e4SLinus Torvalds flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; 6731da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 6741da177e4SLinus Torvalds if (!silent) 6751da177e4SLinus Torvalds printk(KERN_INFO "ufstype=nextstep-cd is supported read-only\n"); 6761da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 6771da177e4SLinus Torvalds } 6781da177e4SLinus Torvalds break; 6791da177e4SLinus Torvalds 6801da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_OPENSTEP: 681abf5d15fSEvgeniy Dushistov UFSD("ufstype=openstep\n"); 6821da177e4SLinus Torvalds uspi->s_fsize = block_size = 1024; 6831da177e4SLinus Torvalds uspi->s_fmask = ~(1024 - 1); 6841da177e4SLinus Torvalds uspi->s_fshift = 10; 6851da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 2048; 6861da177e4SLinus Torvalds uspi->s_sbbase = 0; 6871da177e4SLinus Torvalds flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; 6881da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 6891da177e4SLinus Torvalds if (!silent) 6901da177e4SLinus Torvalds printk(KERN_INFO "ufstype=openstep is supported read-only\n"); 6911da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 6921da177e4SLinus Torvalds } 6931da177e4SLinus Torvalds break; 6941da177e4SLinus Torvalds 6951da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_HP: 696abf5d15fSEvgeniy Dushistov UFSD("ufstype=hp\n"); 6971da177e4SLinus Torvalds uspi->s_fsize = block_size = 1024; 6981da177e4SLinus Torvalds uspi->s_fmask = ~(1024 - 1); 6991da177e4SLinus Torvalds uspi->s_fshift = 10; 7001da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 2048; 7011da177e4SLinus Torvalds uspi->s_sbbase = 0; 7021da177e4SLinus Torvalds flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; 7031da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 7041da177e4SLinus Torvalds if (!silent) 7051da177e4SLinus Torvalds printk(KERN_INFO "ufstype=hp is supported read-only\n"); 7061da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 7071da177e4SLinus Torvalds } 7081da177e4SLinus Torvalds break; 7091da177e4SLinus Torvalds default: 7101da177e4SLinus Torvalds if (!silent) 7111da177e4SLinus Torvalds printk("unknown ufstype\n"); 7121da177e4SLinus Torvalds goto failed; 7131da177e4SLinus Torvalds } 7141da177e4SLinus Torvalds 7151da177e4SLinus Torvalds again: 7161da177e4SLinus Torvalds if (!sb_set_blocksize(sb, block_size)) { 7171da177e4SLinus Torvalds printk(KERN_ERR "UFS: failed to set blocksize\n"); 7181da177e4SLinus Torvalds goto failed; 7191da177e4SLinus Torvalds } 7201da177e4SLinus Torvalds 7211da177e4SLinus Torvalds /* 7221da177e4SLinus Torvalds * read ufs super block from device 7231da177e4SLinus Torvalds */ 7247b4ee73eSEvgeniy 7257b4ee73eSEvgeniy ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size); 7267b4ee73eSEvgeniy 7271da177e4SLinus Torvalds if (!ubh) 7281da177e4SLinus Torvalds goto failed; 7291da177e4SLinus Torvalds 7301da177e4SLinus Torvalds 7317b4ee73eSEvgeniy usb1 = ubh_get_usb_first(uspi); 7327b4ee73eSEvgeniy usb2 = ubh_get_usb_second(uspi); 7337b4ee73eSEvgeniy usb3 = ubh_get_usb_third(uspi); 7341da177e4SLinus Torvalds usb = (struct ufs_super_block *) 7351da177e4SLinus Torvalds ((struct ufs_buffer_head *)uspi)->bh[0]->b_data ; 7361da177e4SLinus Torvalds 7371da177e4SLinus Torvalds /* 7381da177e4SLinus Torvalds * Check ufs magic number 7391da177e4SLinus Torvalds */ 7401da177e4SLinus Torvalds sbi->s_bytesex = BYTESEX_LE; 7411da177e4SLinus Torvalds switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { 7421da177e4SLinus Torvalds case UFS_MAGIC: 7431da177e4SLinus Torvalds case UFS2_MAGIC: 7441da177e4SLinus Torvalds case UFS_MAGIC_LFN: 7451da177e4SLinus Torvalds case UFS_MAGIC_FEA: 7461da177e4SLinus Torvalds case UFS_MAGIC_4GB: 7471da177e4SLinus Torvalds goto magic_found; 7481da177e4SLinus Torvalds } 7491da177e4SLinus Torvalds sbi->s_bytesex = BYTESEX_BE; 7501da177e4SLinus Torvalds switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { 7511da177e4SLinus Torvalds case UFS_MAGIC: 7521da177e4SLinus Torvalds case UFS2_MAGIC: 7531da177e4SLinus Torvalds case UFS_MAGIC_LFN: 7541da177e4SLinus Torvalds case UFS_MAGIC_FEA: 7551da177e4SLinus Torvalds case UFS_MAGIC_4GB: 7561da177e4SLinus Torvalds goto magic_found; 7571da177e4SLinus Torvalds } 7581da177e4SLinus Torvalds 7591da177e4SLinus Torvalds if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP) 7601da177e4SLinus Torvalds || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD) 7611da177e4SLinus Torvalds || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP)) 7621da177e4SLinus Torvalds && uspi->s_sbbase < 256) { 7631da177e4SLinus Torvalds ubh_brelse_uspi(uspi); 7641da177e4SLinus Torvalds ubh = NULL; 7651da177e4SLinus Torvalds uspi->s_sbbase += 8; 7661da177e4SLinus Torvalds goto again; 7671da177e4SLinus Torvalds } 7681da177e4SLinus Torvalds if (!silent) 7691da177e4SLinus Torvalds printk("ufs_read_super: bad magic number\n"); 7701da177e4SLinus Torvalds goto failed; 7711da177e4SLinus Torvalds 7721da177e4SLinus Torvalds magic_found: 7731da177e4SLinus Torvalds /* 7741da177e4SLinus Torvalds * Check block and fragment sizes 7751da177e4SLinus Torvalds */ 7761da177e4SLinus Torvalds uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize); 7771da177e4SLinus Torvalds uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize); 7781da177e4SLinus Torvalds uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize); 7791da177e4SLinus Torvalds uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); 7801da177e4SLinus Torvalds uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); 7811da177e4SLinus Torvalds 7821da177e4SLinus Torvalds if (uspi->s_fsize & (uspi->s_fsize - 1)) { 7831da177e4SLinus Torvalds printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n", 7841da177e4SLinus Torvalds uspi->s_fsize); 7851da177e4SLinus Torvalds goto failed; 7861da177e4SLinus Torvalds } 7871da177e4SLinus Torvalds if (uspi->s_fsize < 512) { 7881da177e4SLinus Torvalds printk(KERN_ERR "ufs_read_super: fragment size %u is too small\n", 7891da177e4SLinus Torvalds uspi->s_fsize); 7901da177e4SLinus Torvalds goto failed; 7911da177e4SLinus Torvalds } 7921da177e4SLinus Torvalds if (uspi->s_fsize > 4096) { 7931da177e4SLinus Torvalds printk(KERN_ERR "ufs_read_super: fragment size %u is too large\n", 7941da177e4SLinus Torvalds uspi->s_fsize); 7951da177e4SLinus Torvalds goto failed; 7961da177e4SLinus Torvalds } 7971da177e4SLinus Torvalds if (uspi->s_bsize & (uspi->s_bsize - 1)) { 7981da177e4SLinus Torvalds printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n", 7991da177e4SLinus Torvalds uspi->s_bsize); 8001da177e4SLinus Torvalds goto failed; 8011da177e4SLinus Torvalds } 8021da177e4SLinus Torvalds if (uspi->s_bsize < 4096) { 8031da177e4SLinus Torvalds printk(KERN_ERR "ufs_read_super: block size %u is too small\n", 8041da177e4SLinus Torvalds uspi->s_bsize); 8051da177e4SLinus Torvalds goto failed; 8061da177e4SLinus Torvalds } 8071da177e4SLinus Torvalds if (uspi->s_bsize / uspi->s_fsize > 8) { 8081da177e4SLinus Torvalds printk(KERN_ERR "ufs_read_super: too many fragments per block (%u)\n", 8091da177e4SLinus Torvalds uspi->s_bsize / uspi->s_fsize); 8101da177e4SLinus Torvalds goto failed; 8111da177e4SLinus Torvalds } 8121da177e4SLinus Torvalds if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) { 8131da177e4SLinus Torvalds ubh_brelse_uspi(uspi); 8141da177e4SLinus Torvalds ubh = NULL; 8151da177e4SLinus Torvalds block_size = uspi->s_fsize; 8161da177e4SLinus Torvalds super_block_size = uspi->s_sbsize; 817abf5d15fSEvgeniy Dushistov UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size); 8181da177e4SLinus Torvalds goto again; 8191da177e4SLinus Torvalds } 8201da177e4SLinus Torvalds 821abf5d15fSEvgeniy Dushistov #ifdef CONFIG_UFS_DEBUG 8221da177e4SLinus Torvalds if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 8231da177e4SLinus Torvalds ufs2_print_super_stuff(sb,usb); 8241da177e4SLinus Torvalds else 8251da177e4SLinus Torvalds ufs_print_super_stuff(sb, usb1, usb2, usb3); 8261da177e4SLinus Torvalds #endif 8271da177e4SLinus Torvalds 8281da177e4SLinus Torvalds /* 8291da177e4SLinus Torvalds * Check, if file system was correctly unmounted. 8301da177e4SLinus Torvalds * If not, make it read only. 8311da177e4SLinus Torvalds */ 8321da177e4SLinus Torvalds if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) || 8331da177e4SLinus Torvalds ((flags & UFS_ST_MASK) == UFS_ST_OLD) || 8341da177e4SLinus Torvalds (((flags & UFS_ST_MASK) == UFS_ST_SUN || 8351da177e4SLinus Torvalds (flags & UFS_ST_MASK) == UFS_ST_SUNx86) && 8361da177e4SLinus Torvalds (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) { 8371da177e4SLinus Torvalds switch(usb1->fs_clean) { 8381da177e4SLinus Torvalds case UFS_FSCLEAN: 839abf5d15fSEvgeniy Dushistov UFSD("fs is clean\n"); 8401da177e4SLinus Torvalds break; 8411da177e4SLinus Torvalds case UFS_FSSTABLE: 842abf5d15fSEvgeniy Dushistov UFSD("fs is stable\n"); 8431da177e4SLinus Torvalds break; 8441da177e4SLinus Torvalds case UFS_FSOSF1: 845abf5d15fSEvgeniy Dushistov UFSD("fs is DEC OSF/1\n"); 8461da177e4SLinus Torvalds break; 8471da177e4SLinus Torvalds case UFS_FSACTIVE: 8481da177e4SLinus Torvalds printk("ufs_read_super: fs is active\n"); 8491da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 8501da177e4SLinus Torvalds break; 8511da177e4SLinus Torvalds case UFS_FSBAD: 8521da177e4SLinus Torvalds printk("ufs_read_super: fs is bad\n"); 8531da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 8541da177e4SLinus Torvalds break; 8551da177e4SLinus Torvalds default: 8561da177e4SLinus Torvalds printk("ufs_read_super: can't grok fs_clean 0x%x\n", usb1->fs_clean); 8571da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 8581da177e4SLinus Torvalds break; 8591da177e4SLinus Torvalds } 8601da177e4SLinus Torvalds } 8611da177e4SLinus Torvalds else { 8621da177e4SLinus Torvalds printk("ufs_read_super: fs needs fsck\n"); 8631da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 8641da177e4SLinus Torvalds } 8651da177e4SLinus Torvalds 8661da177e4SLinus Torvalds /* 8671da177e4SLinus Torvalds * Read ufs_super_block into internal data structures 8681da177e4SLinus Torvalds */ 8691da177e4SLinus Torvalds sb->s_op = &ufs_super_ops; 8701da177e4SLinus Torvalds sb->dq_op = NULL; /***/ 8711da177e4SLinus Torvalds sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic); 8721da177e4SLinus Torvalds 8731da177e4SLinus Torvalds uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno); 8741da177e4SLinus Torvalds uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno); 8751da177e4SLinus Torvalds uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno); 8761da177e4SLinus Torvalds uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno); 8771da177e4SLinus Torvalds uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset); 8781da177e4SLinus Torvalds uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask); 8791da177e4SLinus Torvalds 8801da177e4SLinus Torvalds if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { 8811da177e4SLinus Torvalds uspi->s_u2_size = fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_size); 8821da177e4SLinus Torvalds uspi->s_u2_dsize = fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_dsize); 8831da177e4SLinus Torvalds } 8841da177e4SLinus Torvalds else { 8851da177e4SLinus Torvalds uspi->s_size = fs32_to_cpu(sb, usb1->fs_size); 8861da177e4SLinus Torvalds uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize); 8871da177e4SLinus Torvalds } 8881da177e4SLinus Torvalds 8891da177e4SLinus Torvalds uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg); 8901da177e4SLinus Torvalds /* s_bsize already set */ 8911da177e4SLinus Torvalds /* s_fsize already set */ 8921da177e4SLinus Torvalds uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag); 8931da177e4SLinus Torvalds uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree); 8941da177e4SLinus Torvalds uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask); 8951da177e4SLinus Torvalds uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); 8961da177e4SLinus Torvalds uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift); 8971da177e4SLinus Torvalds uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); 898abf5d15fSEvgeniy Dushistov UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift, 899abf5d15fSEvgeniy Dushistov uspi->s_fshift); 9001da177e4SLinus Torvalds uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift); 9011da177e4SLinus Torvalds uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb); 9021da177e4SLinus Torvalds /* s_sbsize already set */ 9031da177e4SLinus Torvalds uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask); 9041da177e4SLinus Torvalds uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift); 9051da177e4SLinus Torvalds uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir); 9061da177e4SLinus Torvalds uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb); 9071da177e4SLinus Torvalds uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf); 9081da177e4SLinus Torvalds uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3); 9091da177e4SLinus Torvalds uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave); 9101da177e4SLinus Torvalds uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew); 9111da177e4SLinus Torvalds uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr); 9121da177e4SLinus Torvalds uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize); 9131da177e4SLinus Torvalds uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize); 9141da177e4SLinus Torvalds uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak); 9151da177e4SLinus Torvalds uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect); 9161da177e4SLinus Torvalds uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc); 9171da177e4SLinus Torvalds uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg); 9181da177e4SLinus Torvalds uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg); 9191da177e4SLinus Torvalds uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_cpc); 9201da177e4SLinus Torvalds uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_contigsumsize); 9211da177e4SLinus Torvalds uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3); 9221da177e4SLinus Torvalds uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3); 9231da177e4SLinus Torvalds uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat); 9241da177e4SLinus Torvalds uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos); 9251da177e4SLinus Torvalds uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff); 9261da177e4SLinus Torvalds uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff); 9271da177e4SLinus Torvalds 9281da177e4SLinus Torvalds /* 9291da177e4SLinus Torvalds * Compute another frequently used values 9301da177e4SLinus Torvalds */ 9311da177e4SLinus Torvalds uspi->s_fpbmask = uspi->s_fpb - 1; 932abf5d15fSEvgeniy Dushistov if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 9331da177e4SLinus Torvalds uspi->s_apbshift = uspi->s_bshift - 3; 934abf5d15fSEvgeniy Dushistov else 9351da177e4SLinus Torvalds uspi->s_apbshift = uspi->s_bshift - 2; 936abf5d15fSEvgeniy Dushistov 9371da177e4SLinus Torvalds uspi->s_2apbshift = uspi->s_apbshift * 2; 9381da177e4SLinus Torvalds uspi->s_3apbshift = uspi->s_apbshift * 3; 9391da177e4SLinus Torvalds uspi->s_apb = 1 << uspi->s_apbshift; 9401da177e4SLinus Torvalds uspi->s_2apb = 1 << uspi->s_2apbshift; 9411da177e4SLinus Torvalds uspi->s_3apb = 1 << uspi->s_3apbshift; 9421da177e4SLinus Torvalds uspi->s_apbmask = uspi->s_apb - 1; 9431da177e4SLinus Torvalds uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS; 9441da177e4SLinus Torvalds uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift; 9451da177e4SLinus Torvalds uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift; 9461da177e4SLinus Torvalds uspi->s_bpf = uspi->s_fsize << 3; 9471da177e4SLinus Torvalds uspi->s_bpfshift = uspi->s_fshift + 3; 9481da177e4SLinus Torvalds uspi->s_bpfmask = uspi->s_bpf - 1; 9491da177e4SLinus Torvalds if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == 9501da177e4SLinus Torvalds UFS_MOUNT_UFSTYPE_44BSD) 9511da177e4SLinus Torvalds uspi->s_maxsymlinklen = 9521da177e4SLinus Torvalds fs32_to_cpu(sb, usb3->fs_u2.fs_44.fs_maxsymlinklen); 9531da177e4SLinus Torvalds 9541da177e4SLinus Torvalds sbi->s_flags = flags; 9551da177e4SLinus Torvalds 9561da177e4SLinus Torvalds inode = iget(sb, UFS_ROOTINO); 9571da177e4SLinus Torvalds if (!inode || is_bad_inode(inode)) 9581da177e4SLinus Torvalds goto failed; 9591da177e4SLinus Torvalds sb->s_root = d_alloc_root(inode); 9601da177e4SLinus Torvalds if (!sb->s_root) 9611da177e4SLinus Torvalds goto dalloc_failed; 9621da177e4SLinus Torvalds 9631da177e4SLinus Torvalds 9641da177e4SLinus Torvalds /* 9651da177e4SLinus Torvalds * Read cylinder group structures 9661da177e4SLinus Torvalds */ 9671da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) 9681da177e4SLinus Torvalds if (!ufs_read_cylinder_structures(sb)) 9691da177e4SLinus Torvalds goto failed; 9701da177e4SLinus Torvalds 971abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 9721da177e4SLinus Torvalds return 0; 9731da177e4SLinus Torvalds 9741da177e4SLinus Torvalds dalloc_failed: 9751da177e4SLinus Torvalds iput(inode); 9761da177e4SLinus Torvalds failed: 977f99d49adSJesper Juhl if (ubh) 978f99d49adSJesper Juhl ubh_brelse_uspi (uspi); 979f99d49adSJesper Juhl kfree (uspi); 980f99d49adSJesper Juhl kfree(sbi); 9811da177e4SLinus Torvalds sb->s_fs_info = NULL; 982abf5d15fSEvgeniy Dushistov UFSD("EXIT (FAILED)\n"); 9831da177e4SLinus Torvalds return -EINVAL; 9841da177e4SLinus Torvalds 9851da177e4SLinus Torvalds failed_nomem: 986abf5d15fSEvgeniy Dushistov UFSD("EXIT (NOMEM)\n"); 9871da177e4SLinus Torvalds return -ENOMEM; 9881da177e4SLinus Torvalds } 9891da177e4SLinus Torvalds 9901da177e4SLinus Torvalds static void ufs_write_super (struct super_block *sb) { 9911da177e4SLinus Torvalds struct ufs_sb_private_info * uspi; 9921da177e4SLinus Torvalds struct ufs_super_block_first * usb1; 9931da177e4SLinus Torvalds struct ufs_super_block_third * usb3; 9941da177e4SLinus Torvalds unsigned flags; 9951da177e4SLinus Torvalds 9961da177e4SLinus Torvalds lock_kernel(); 9971da177e4SLinus Torvalds 998abf5d15fSEvgeniy Dushistov UFSD("ENTER\n"); 9991da177e4SLinus Torvalds flags = UFS_SB(sb)->s_flags; 10001da177e4SLinus Torvalds uspi = UFS_SB(sb)->s_uspi; 10017b4ee73eSEvgeniy usb1 = ubh_get_usb_first(uspi); 10027b4ee73eSEvgeniy usb3 = ubh_get_usb_third(uspi); 10031da177e4SLinus Torvalds 10041da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 10051da177e4SLinus Torvalds usb1->fs_time = cpu_to_fs32(sb, get_seconds()); 10061da177e4SLinus Torvalds if ((flags & UFS_ST_MASK) == UFS_ST_SUN 10071da177e4SLinus Torvalds || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) 10081da177e4SLinus Torvalds ufs_set_fs_state(sb, usb1, usb3, 10091da177e4SLinus Torvalds UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); 10109695ef16SEvgeniy Dushistov ubh_mark_buffer_dirty (USPI_UBH(uspi)); 10111da177e4SLinus Torvalds } 10121da177e4SLinus Torvalds sb->s_dirt = 0; 1013abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 10141da177e4SLinus Torvalds unlock_kernel(); 10151da177e4SLinus Torvalds } 10161da177e4SLinus Torvalds 10171da177e4SLinus Torvalds static void ufs_put_super(struct super_block *sb) 10181da177e4SLinus Torvalds { 10191da177e4SLinus Torvalds struct ufs_sb_info * sbi = UFS_SB(sb); 10201da177e4SLinus Torvalds 1021abf5d15fSEvgeniy Dushistov UFSD("ENTER\n"); 10221da177e4SLinus Torvalds 10231da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) 10241da177e4SLinus Torvalds ufs_put_cylinder_structures (sb); 10251da177e4SLinus Torvalds 10261da177e4SLinus Torvalds ubh_brelse_uspi (sbi->s_uspi); 10271da177e4SLinus Torvalds kfree (sbi->s_uspi); 10281da177e4SLinus Torvalds kfree (sbi); 10291da177e4SLinus Torvalds sb->s_fs_info = NULL; 1030abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 10311da177e4SLinus Torvalds return; 10321da177e4SLinus Torvalds } 10331da177e4SLinus Torvalds 10341da177e4SLinus Torvalds 10351da177e4SLinus Torvalds static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) 10361da177e4SLinus Torvalds { 10371da177e4SLinus Torvalds struct ufs_sb_private_info * uspi; 10381da177e4SLinus Torvalds struct ufs_super_block_first * usb1; 10391da177e4SLinus Torvalds struct ufs_super_block_third * usb3; 10401da177e4SLinus Torvalds unsigned new_mount_opt, ufstype; 10411da177e4SLinus Torvalds unsigned flags; 10421da177e4SLinus Torvalds 10431da177e4SLinus Torvalds uspi = UFS_SB(sb)->s_uspi; 10441da177e4SLinus Torvalds flags = UFS_SB(sb)->s_flags; 10457b4ee73eSEvgeniy usb1 = ubh_get_usb_first(uspi); 10467b4ee73eSEvgeniy usb3 = ubh_get_usb_third(uspi); 10471da177e4SLinus Torvalds 10481da177e4SLinus Torvalds /* 10491da177e4SLinus Torvalds * Allow the "check" option to be passed as a remount option. 10501da177e4SLinus Torvalds * It is not possible to change ufstype option during remount 10511da177e4SLinus Torvalds */ 10521da177e4SLinus Torvalds ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; 10531da177e4SLinus Torvalds new_mount_opt = 0; 10541da177e4SLinus Torvalds ufs_set_opt (new_mount_opt, ONERROR_LOCK); 10551da177e4SLinus Torvalds if (!ufs_parse_options (data, &new_mount_opt)) 10561da177e4SLinus Torvalds return -EINVAL; 10571da177e4SLinus Torvalds if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) { 10581da177e4SLinus Torvalds new_mount_opt |= ufstype; 10591da177e4SLinus Torvalds } 10601da177e4SLinus Torvalds else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { 10611da177e4SLinus Torvalds printk("ufstype can't be changed during remount\n"); 10621da177e4SLinus Torvalds return -EINVAL; 10631da177e4SLinus Torvalds } 10641da177e4SLinus Torvalds 10651da177e4SLinus Torvalds if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) { 10661da177e4SLinus Torvalds UFS_SB(sb)->s_mount_opt = new_mount_opt; 10671da177e4SLinus Torvalds return 0; 10681da177e4SLinus Torvalds } 10691da177e4SLinus Torvalds 10701da177e4SLinus Torvalds /* 10711da177e4SLinus Torvalds * fs was mouted as rw, remounting ro 10721da177e4SLinus Torvalds */ 10731da177e4SLinus Torvalds if (*mount_flags & MS_RDONLY) { 10741da177e4SLinus Torvalds ufs_put_cylinder_structures(sb); 10751da177e4SLinus Torvalds usb1->fs_time = cpu_to_fs32(sb, get_seconds()); 10761da177e4SLinus Torvalds if ((flags & UFS_ST_MASK) == UFS_ST_SUN 10771da177e4SLinus Torvalds || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) 10781da177e4SLinus Torvalds ufs_set_fs_state(sb, usb1, usb3, 10791da177e4SLinus Torvalds UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); 10809695ef16SEvgeniy Dushistov ubh_mark_buffer_dirty (USPI_UBH(uspi)); 10811da177e4SLinus Torvalds sb->s_dirt = 0; 10821da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 10831da177e4SLinus Torvalds } 10841da177e4SLinus Torvalds /* 10851da177e4SLinus Torvalds * fs was mounted as ro, remounting rw 10861da177e4SLinus Torvalds */ 10871da177e4SLinus Torvalds else { 10881da177e4SLinus Torvalds #ifndef CONFIG_UFS_FS_WRITE 10891da177e4SLinus Torvalds printk("ufs was compiled with read-only support, " 10901da177e4SLinus Torvalds "can't be mounted as read-write\n"); 10911da177e4SLinus Torvalds return -EINVAL; 10921da177e4SLinus Torvalds #else 10931da177e4SLinus Torvalds if (ufstype != UFS_MOUNT_UFSTYPE_SUN && 10941da177e4SLinus Torvalds ufstype != UFS_MOUNT_UFSTYPE_44BSD && 10951da177e4SLinus Torvalds ufstype != UFS_MOUNT_UFSTYPE_SUNx86) { 10961da177e4SLinus Torvalds printk("this ufstype is read-only supported\n"); 10971da177e4SLinus Torvalds return -EINVAL; 10981da177e4SLinus Torvalds } 10991da177e4SLinus Torvalds if (!ufs_read_cylinder_structures (sb)) { 11001da177e4SLinus Torvalds printk("failed during remounting\n"); 11011da177e4SLinus Torvalds return -EPERM; 11021da177e4SLinus Torvalds } 11031da177e4SLinus Torvalds sb->s_flags &= ~MS_RDONLY; 11041da177e4SLinus Torvalds #endif 11051da177e4SLinus Torvalds } 11061da177e4SLinus Torvalds UFS_SB(sb)->s_mount_opt = new_mount_opt; 11071da177e4SLinus Torvalds return 0; 11081da177e4SLinus Torvalds } 11091da177e4SLinus Torvalds 1110726c3342SDavid Howells static int ufs_statfs (struct dentry *dentry, struct kstatfs *buf) 11111da177e4SLinus Torvalds { 1112726c3342SDavid Howells struct super_block *sb = dentry->d_sb; 11131da177e4SLinus Torvalds struct ufs_sb_private_info * uspi; 11141da177e4SLinus Torvalds struct ufs_super_block_first * usb1; 11151da177e4SLinus Torvalds struct ufs_super_block * usb; 11161da177e4SLinus Torvalds unsigned flags = 0; 11171da177e4SLinus Torvalds 11181da177e4SLinus Torvalds lock_kernel(); 11191da177e4SLinus Torvalds 11201da177e4SLinus Torvalds uspi = UFS_SB(sb)->s_uspi; 11217b4ee73eSEvgeniy usb1 = ubh_get_usb_first (uspi); 11221da177e4SLinus Torvalds usb = (struct ufs_super_block *) 11231da177e4SLinus Torvalds ((struct ufs_buffer_head *)uspi)->bh[0]->b_data ; 11241da177e4SLinus Torvalds 11251da177e4SLinus Torvalds flags = UFS_SB(sb)->s_flags; 11261da177e4SLinus Torvalds if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { 11271da177e4SLinus Torvalds buf->f_type = UFS2_MAGIC; 11281da177e4SLinus Torvalds buf->f_blocks = fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_dsize); 11291da177e4SLinus Torvalds buf->f_bfree = ufs_blkstofrags(fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_cstotal.cs_nbfree)) + 11301da177e4SLinus Torvalds fs64_to_cpu(sb, usb->fs_u11.fs_u2.fs_cstotal.cs_nffree); 11311da177e4SLinus Torvalds buf->f_ffree = fs64_to_cpu(sb, 11321da177e4SLinus Torvalds usb->fs_u11.fs_u2.fs_cstotal.cs_nifree); 11331da177e4SLinus Torvalds } 11341da177e4SLinus Torvalds else { 11351da177e4SLinus Torvalds buf->f_type = UFS_MAGIC; 11361da177e4SLinus Torvalds buf->f_blocks = uspi->s_dsize; 11371da177e4SLinus Torvalds buf->f_bfree = ufs_blkstofrags(fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)) + 11381da177e4SLinus Torvalds fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree); 11391da177e4SLinus Torvalds buf->f_ffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree); 11401da177e4SLinus Torvalds } 11411da177e4SLinus Torvalds buf->f_bsize = sb->s_blocksize; 11421da177e4SLinus Torvalds buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree)) 11431da177e4SLinus Torvalds ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0; 11441da177e4SLinus Torvalds buf->f_files = uspi->s_ncg * uspi->s_ipg; 11451da177e4SLinus Torvalds buf->f_namelen = UFS_MAXNAMLEN; 11461da177e4SLinus Torvalds 11471da177e4SLinus Torvalds unlock_kernel(); 11481da177e4SLinus Torvalds 11491da177e4SLinus Torvalds return 0; 11501da177e4SLinus Torvalds } 11511da177e4SLinus Torvalds 11521da177e4SLinus Torvalds static kmem_cache_t * ufs_inode_cachep; 11531da177e4SLinus Torvalds 11541da177e4SLinus Torvalds static struct inode *ufs_alloc_inode(struct super_block *sb) 11551da177e4SLinus Torvalds { 11561da177e4SLinus Torvalds struct ufs_inode_info *ei; 11571da177e4SLinus Torvalds ei = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, SLAB_KERNEL); 11581da177e4SLinus Torvalds if (!ei) 11591da177e4SLinus Torvalds return NULL; 11601da177e4SLinus Torvalds ei->vfs_inode.i_version = 1; 11611da177e4SLinus Torvalds return &ei->vfs_inode; 11621da177e4SLinus Torvalds } 11631da177e4SLinus Torvalds 11641da177e4SLinus Torvalds static void ufs_destroy_inode(struct inode *inode) 11651da177e4SLinus Torvalds { 11661da177e4SLinus Torvalds kmem_cache_free(ufs_inode_cachep, UFS_I(inode)); 11671da177e4SLinus Torvalds } 11681da177e4SLinus Torvalds 11691da177e4SLinus Torvalds static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags) 11701da177e4SLinus Torvalds { 11711da177e4SLinus Torvalds struct ufs_inode_info *ei = (struct ufs_inode_info *) foo; 11721da177e4SLinus Torvalds 11731da177e4SLinus Torvalds if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == 11741da177e4SLinus Torvalds SLAB_CTOR_CONSTRUCTOR) 11751da177e4SLinus Torvalds inode_init_once(&ei->vfs_inode); 11761da177e4SLinus Torvalds } 11771da177e4SLinus Torvalds 11781da177e4SLinus Torvalds static int init_inodecache(void) 11791da177e4SLinus Torvalds { 11801da177e4SLinus Torvalds ufs_inode_cachep = kmem_cache_create("ufs_inode_cache", 11811da177e4SLinus Torvalds sizeof(struct ufs_inode_info), 1182fffb60f9SPaul Jackson 0, (SLAB_RECLAIM_ACCOUNT| 1183fffb60f9SPaul Jackson SLAB_MEM_SPREAD), 11841da177e4SLinus Torvalds init_once, NULL); 11851da177e4SLinus Torvalds if (ufs_inode_cachep == NULL) 11861da177e4SLinus Torvalds return -ENOMEM; 11871da177e4SLinus Torvalds return 0; 11881da177e4SLinus Torvalds } 11891da177e4SLinus Torvalds 11901da177e4SLinus Torvalds static void destroy_inodecache(void) 11911da177e4SLinus Torvalds { 11921da177e4SLinus Torvalds if (kmem_cache_destroy(ufs_inode_cachep)) 11931da177e4SLinus Torvalds printk(KERN_INFO "ufs_inode_cache: not all structures were freed\n"); 11941da177e4SLinus Torvalds } 11951da177e4SLinus Torvalds 11961da177e4SLinus Torvalds #ifdef CONFIG_QUOTA 11971da177e4SLinus Torvalds static ssize_t ufs_quota_read(struct super_block *, int, char *,size_t, loff_t); 11981da177e4SLinus Torvalds static ssize_t ufs_quota_write(struct super_block *, int, const char *, size_t, loff_t); 11991da177e4SLinus Torvalds #endif 12001da177e4SLinus Torvalds 12011da177e4SLinus Torvalds static struct super_operations ufs_super_ops = { 12021da177e4SLinus Torvalds .alloc_inode = ufs_alloc_inode, 12031da177e4SLinus Torvalds .destroy_inode = ufs_destroy_inode, 12041da177e4SLinus Torvalds .read_inode = ufs_read_inode, 12051da177e4SLinus Torvalds .write_inode = ufs_write_inode, 12061da177e4SLinus Torvalds .delete_inode = ufs_delete_inode, 12071da177e4SLinus Torvalds .put_super = ufs_put_super, 12081da177e4SLinus Torvalds .write_super = ufs_write_super, 12091da177e4SLinus Torvalds .statfs = ufs_statfs, 12101da177e4SLinus Torvalds .remount_fs = ufs_remount, 12111da177e4SLinus Torvalds #ifdef CONFIG_QUOTA 12121da177e4SLinus Torvalds .quota_read = ufs_quota_read, 12131da177e4SLinus Torvalds .quota_write = ufs_quota_write, 12141da177e4SLinus Torvalds #endif 12151da177e4SLinus Torvalds }; 12161da177e4SLinus Torvalds 12171da177e4SLinus Torvalds #ifdef CONFIG_QUOTA 12181da177e4SLinus Torvalds 12191da177e4SLinus Torvalds /* Read data from quotafile - avoid pagecache and such because we cannot afford 12201da177e4SLinus Torvalds * acquiring the locks... As quota files are never truncated and quota code 12211da177e4SLinus Torvalds * itself serializes the operations (and noone else should touch the files) 12221da177e4SLinus Torvalds * we don't have to be afraid of races */ 12231da177e4SLinus Torvalds static ssize_t ufs_quota_read(struct super_block *sb, int type, char *data, 12241da177e4SLinus Torvalds size_t len, loff_t off) 12251da177e4SLinus Torvalds { 12261da177e4SLinus Torvalds struct inode *inode = sb_dqopt(sb)->files[type]; 12271da177e4SLinus Torvalds sector_t blk = off >> sb->s_blocksize_bits; 12281da177e4SLinus Torvalds int err = 0; 12291da177e4SLinus Torvalds int offset = off & (sb->s_blocksize - 1); 12301da177e4SLinus Torvalds int tocopy; 12311da177e4SLinus Torvalds size_t toread; 12321da177e4SLinus Torvalds struct buffer_head *bh; 12331da177e4SLinus Torvalds loff_t i_size = i_size_read(inode); 12341da177e4SLinus Torvalds 12351da177e4SLinus Torvalds if (off > i_size) 12361da177e4SLinus Torvalds return 0; 12371da177e4SLinus Torvalds if (off+len > i_size) 12381da177e4SLinus Torvalds len = i_size-off; 12391da177e4SLinus Torvalds toread = len; 12401da177e4SLinus Torvalds while (toread > 0) { 12411da177e4SLinus Torvalds tocopy = sb->s_blocksize - offset < toread ? 12421da177e4SLinus Torvalds sb->s_blocksize - offset : toread; 12431da177e4SLinus Torvalds 12441da177e4SLinus Torvalds bh = ufs_bread(inode, blk, 0, &err); 12451da177e4SLinus Torvalds if (err) 12461da177e4SLinus Torvalds return err; 12471da177e4SLinus Torvalds if (!bh) /* A hole? */ 12481da177e4SLinus Torvalds memset(data, 0, tocopy); 12491da177e4SLinus Torvalds else { 12501da177e4SLinus Torvalds memcpy(data, bh->b_data+offset, tocopy); 12511da177e4SLinus Torvalds brelse(bh); 12521da177e4SLinus Torvalds } 12531da177e4SLinus Torvalds offset = 0; 12541da177e4SLinus Torvalds toread -= tocopy; 12551da177e4SLinus Torvalds data += tocopy; 12561da177e4SLinus Torvalds blk++; 12571da177e4SLinus Torvalds } 12581da177e4SLinus Torvalds return len; 12591da177e4SLinus Torvalds } 12601da177e4SLinus Torvalds 12611da177e4SLinus Torvalds /* Write to quotafile */ 12621da177e4SLinus Torvalds static ssize_t ufs_quota_write(struct super_block *sb, int type, 12631da177e4SLinus Torvalds const char *data, size_t len, loff_t off) 12641da177e4SLinus Torvalds { 12651da177e4SLinus Torvalds struct inode *inode = sb_dqopt(sb)->files[type]; 12661da177e4SLinus Torvalds sector_t blk = off >> sb->s_blocksize_bits; 12671da177e4SLinus Torvalds int err = 0; 12681da177e4SLinus Torvalds int offset = off & (sb->s_blocksize - 1); 12691da177e4SLinus Torvalds int tocopy; 12701da177e4SLinus Torvalds size_t towrite = len; 12711da177e4SLinus Torvalds struct buffer_head *bh; 12721da177e4SLinus Torvalds 12731b1dcc1bSJes Sorensen mutex_lock(&inode->i_mutex); 12741da177e4SLinus Torvalds while (towrite > 0) { 12751da177e4SLinus Torvalds tocopy = sb->s_blocksize - offset < towrite ? 12761da177e4SLinus Torvalds sb->s_blocksize - offset : towrite; 12771da177e4SLinus Torvalds 12781da177e4SLinus Torvalds bh = ufs_bread(inode, blk, 1, &err); 12791da177e4SLinus Torvalds if (!bh) 12801da177e4SLinus Torvalds goto out; 12811da177e4SLinus Torvalds lock_buffer(bh); 12821da177e4SLinus Torvalds memcpy(bh->b_data+offset, data, tocopy); 12831da177e4SLinus Torvalds flush_dcache_page(bh->b_page); 12841da177e4SLinus Torvalds set_buffer_uptodate(bh); 12851da177e4SLinus Torvalds mark_buffer_dirty(bh); 12861da177e4SLinus Torvalds unlock_buffer(bh); 12871da177e4SLinus Torvalds brelse(bh); 12881da177e4SLinus Torvalds offset = 0; 12891da177e4SLinus Torvalds towrite -= tocopy; 12901da177e4SLinus Torvalds data += tocopy; 12911da177e4SLinus Torvalds blk++; 12921da177e4SLinus Torvalds } 12931da177e4SLinus Torvalds out: 129415b2fe39SEvgeniy Polyakov if (len == towrite) { 12951b1dcc1bSJes Sorensen mutex_unlock(&inode->i_mutex); 12961da177e4SLinus Torvalds return err; 129715b2fe39SEvgeniy Polyakov } 12981da177e4SLinus Torvalds if (inode->i_size < off+len-towrite) 12991da177e4SLinus Torvalds i_size_write(inode, off+len-towrite); 13001da177e4SLinus Torvalds inode->i_version++; 13011da177e4SLinus Torvalds inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC; 13021da177e4SLinus Torvalds mark_inode_dirty(inode); 13031b1dcc1bSJes Sorensen mutex_unlock(&inode->i_mutex); 13041da177e4SLinus Torvalds return len - towrite; 13051da177e4SLinus Torvalds } 13061da177e4SLinus Torvalds 13071da177e4SLinus Torvalds #endif 13081da177e4SLinus Torvalds 1309454e2398SDavid Howells static int ufs_get_sb(struct file_system_type *fs_type, 1310454e2398SDavid Howells int flags, const char *dev_name, void *data, struct vfsmount *mnt) 13111da177e4SLinus Torvalds { 1312454e2398SDavid Howells return get_sb_bdev(fs_type, flags, dev_name, data, ufs_fill_super, mnt); 13131da177e4SLinus Torvalds } 13141da177e4SLinus Torvalds 13151da177e4SLinus Torvalds static struct file_system_type ufs_fs_type = { 13161da177e4SLinus Torvalds .owner = THIS_MODULE, 13171da177e4SLinus Torvalds .name = "ufs", 13181da177e4SLinus Torvalds .get_sb = ufs_get_sb, 13191da177e4SLinus Torvalds .kill_sb = kill_block_super, 13201da177e4SLinus Torvalds .fs_flags = FS_REQUIRES_DEV, 13211da177e4SLinus Torvalds }; 13221da177e4SLinus Torvalds 13231da177e4SLinus Torvalds static int __init init_ufs_fs(void) 13241da177e4SLinus Torvalds { 13251da177e4SLinus Torvalds int err = init_inodecache(); 13261da177e4SLinus Torvalds if (err) 13271da177e4SLinus Torvalds goto out1; 13281da177e4SLinus Torvalds err = register_filesystem(&ufs_fs_type); 13291da177e4SLinus Torvalds if (err) 13301da177e4SLinus Torvalds goto out; 13311da177e4SLinus Torvalds return 0; 13321da177e4SLinus Torvalds out: 13331da177e4SLinus Torvalds destroy_inodecache(); 13341da177e4SLinus Torvalds out1: 13351da177e4SLinus Torvalds return err; 13361da177e4SLinus Torvalds } 13371da177e4SLinus Torvalds 13381da177e4SLinus Torvalds static void __exit exit_ufs_fs(void) 13391da177e4SLinus Torvalds { 13401da177e4SLinus Torvalds unregister_filesystem(&ufs_fs_type); 13411da177e4SLinus Torvalds destroy_inodecache(); 13421da177e4SLinus Torvalds } 13431da177e4SLinus Torvalds 13441da177e4SLinus Torvalds module_init(init_ufs_fs) 13451da177e4SLinus Torvalds module_exit(exit_ufs_fs) 13461da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 1347