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 * 64cbcae39fSEvgeniy Dushistov * UFS2 write support added by 65cbcae39fSEvgeniy Dushistov * Evgeniy Dushistov <dushistov@mail.ru>, 2007 661da177e4SLinus Torvalds */ 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds 691da177e4SLinus Torvalds #include <linux/module.h> 701da177e4SLinus Torvalds #include <linux/bitops.h> 711da177e4SLinus Torvalds 721da177e4SLinus Torvalds #include <stdarg.h> 731da177e4SLinus Torvalds 741da177e4SLinus Torvalds #include <asm/uaccess.h> 751da177e4SLinus Torvalds #include <asm/system.h> 761da177e4SLinus Torvalds 771da177e4SLinus Torvalds #include <linux/errno.h> 781da177e4SLinus Torvalds #include <linux/fs.h> 791da177e4SLinus Torvalds #include <linux/ufs_fs.h> 801da177e4SLinus Torvalds #include <linux/slab.h> 811da177e4SLinus Torvalds #include <linux/time.h> 821da177e4SLinus Torvalds #include <linux/stat.h> 831da177e4SLinus Torvalds #include <linux/string.h> 841da177e4SLinus Torvalds #include <linux/blkdev.h> 851da177e4SLinus Torvalds #include <linux/init.h> 861da177e4SLinus Torvalds #include <linux/parser.h> 871da177e4SLinus Torvalds #include <linux/smp_lock.h> 881da177e4SLinus Torvalds #include <linux/buffer_head.h> 891da177e4SLinus Torvalds #include <linux/vfs.h> 901da177e4SLinus Torvalds 911da177e4SLinus Torvalds #include "swab.h" 921da177e4SLinus Torvalds #include "util.h" 931da177e4SLinus Torvalds 94abf5d15fSEvgeniy Dushistov #ifdef CONFIG_UFS_DEBUG 951da177e4SLinus Torvalds /* 961da177e4SLinus Torvalds * Print contents of ufs_super_block, useful for debugging 971da177e4SLinus Torvalds */ 983313e292SEvgeniy Dushistov static void ufs_print_super_stuff(struct super_block *sb, 991da177e4SLinus Torvalds struct ufs_super_block_first *usb1, 1001da177e4SLinus Torvalds struct ufs_super_block_second *usb2, 1011da177e4SLinus Torvalds struct ufs_super_block_third *usb3) 1021da177e4SLinus Torvalds { 1033313e292SEvgeniy Dushistov u32 magic = fs32_to_cpu(sb, usb3->fs_magic); 1043313e292SEvgeniy Dushistov 1051da177e4SLinus Torvalds printk("ufs_print_super_stuff\n"); 1063313e292SEvgeniy Dushistov printk(" magic: 0x%x\n", magic); 1073313e292SEvgeniy Dushistov if (fs32_to_cpu(sb, usb3->fs_magic) == UFS2_MAGIC) { 108647b7e87SEvgeniy Dushistov printk(" fs_size: %llu\n", (unsigned long long) 109647b7e87SEvgeniy Dushistov fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size)); 110647b7e87SEvgeniy Dushistov printk(" fs_dsize: %llu\n", (unsigned long long) 111647b7e87SEvgeniy Dushistov fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize)); 112647b7e87SEvgeniy Dushistov printk(" bsize: %u\n", 113647b7e87SEvgeniy Dushistov fs32_to_cpu(sb, usb1->fs_bsize)); 114647b7e87SEvgeniy Dushistov printk(" fsize: %u\n", 115647b7e87SEvgeniy Dushistov fs32_to_cpu(sb, usb1->fs_fsize)); 116647b7e87SEvgeniy Dushistov printk(" fs_volname: %s\n", usb2->fs_un.fs_u2.fs_volname); 117647b7e87SEvgeniy Dushistov printk(" fs_sblockloc: %llu\n", (unsigned long long) 118647b7e87SEvgeniy Dushistov fs64_to_cpu(sb, usb2->fs_un.fs_u2.fs_sblockloc)); 119647b7e87SEvgeniy Dushistov printk(" cs_ndir(No of dirs): %llu\n", (unsigned long long) 120647b7e87SEvgeniy Dushistov fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir)); 121647b7e87SEvgeniy Dushistov printk(" cs_nbfree(No of free blocks): %llu\n", 122647b7e87SEvgeniy Dushistov (unsigned long long) 123647b7e87SEvgeniy Dushistov fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree)); 1243313e292SEvgeniy Dushistov printk(KERN_INFO" cs_nifree(Num of free inodes): %llu\n", 1253313e292SEvgeniy Dushistov (unsigned long long) 1263313e292SEvgeniy Dushistov fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree)); 1273313e292SEvgeniy Dushistov printk(KERN_INFO" cs_nffree(Num of free frags): %llu\n", 1283313e292SEvgeniy Dushistov (unsigned long long) 1293313e292SEvgeniy Dushistov fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree)); 130647b7e87SEvgeniy Dushistov } else { 1311da177e4SLinus Torvalds printk(" sblkno: %u\n", fs32_to_cpu(sb, usb1->fs_sblkno)); 1321da177e4SLinus Torvalds printk(" cblkno: %u\n", fs32_to_cpu(sb, usb1->fs_cblkno)); 1331da177e4SLinus Torvalds printk(" iblkno: %u\n", fs32_to_cpu(sb, usb1->fs_iblkno)); 1341da177e4SLinus Torvalds printk(" dblkno: %u\n", fs32_to_cpu(sb, usb1->fs_dblkno)); 135647b7e87SEvgeniy Dushistov printk(" cgoffset: %u\n", 136647b7e87SEvgeniy Dushistov fs32_to_cpu(sb, usb1->fs_cgoffset)); 137647b7e87SEvgeniy Dushistov printk(" ~cgmask: 0x%x\n", 138647b7e87SEvgeniy Dushistov ~fs32_to_cpu(sb, usb1->fs_cgmask)); 1391da177e4SLinus Torvalds printk(" size: %u\n", fs32_to_cpu(sb, usb1->fs_size)); 1401da177e4SLinus Torvalds printk(" dsize: %u\n", fs32_to_cpu(sb, usb1->fs_dsize)); 1411da177e4SLinus Torvalds printk(" ncg: %u\n", fs32_to_cpu(sb, usb1->fs_ncg)); 1421da177e4SLinus Torvalds printk(" bsize: %u\n", fs32_to_cpu(sb, usb1->fs_bsize)); 1431da177e4SLinus Torvalds printk(" fsize: %u\n", fs32_to_cpu(sb, usb1->fs_fsize)); 1441da177e4SLinus Torvalds printk(" frag: %u\n", fs32_to_cpu(sb, usb1->fs_frag)); 145647b7e87SEvgeniy Dushistov printk(" fragshift: %u\n", 146647b7e87SEvgeniy Dushistov fs32_to_cpu(sb, usb1->fs_fragshift)); 1471da177e4SLinus Torvalds printk(" ~fmask: %u\n", ~fs32_to_cpu(sb, usb1->fs_fmask)); 1481da177e4SLinus Torvalds printk(" fshift: %u\n", fs32_to_cpu(sb, usb1->fs_fshift)); 1491da177e4SLinus Torvalds printk(" sbsize: %u\n", fs32_to_cpu(sb, usb1->fs_sbsize)); 1501da177e4SLinus Torvalds printk(" spc: %u\n", fs32_to_cpu(sb, usb1->fs_spc)); 1511da177e4SLinus Torvalds printk(" cpg: %u\n", fs32_to_cpu(sb, usb1->fs_cpg)); 1521da177e4SLinus Torvalds printk(" ipg: %u\n", fs32_to_cpu(sb, usb1->fs_ipg)); 1531da177e4SLinus Torvalds printk(" fpg: %u\n", fs32_to_cpu(sb, usb1->fs_fpg)); 1541da177e4SLinus Torvalds printk(" csaddr: %u\n", fs32_to_cpu(sb, usb1->fs_csaddr)); 1551da177e4SLinus Torvalds printk(" cssize: %u\n", fs32_to_cpu(sb, usb1->fs_cssize)); 1561da177e4SLinus Torvalds printk(" cgsize: %u\n", fs32_to_cpu(sb, usb1->fs_cgsize)); 157647b7e87SEvgeniy Dushistov printk(" fstodb: %u\n", 158647b7e87SEvgeniy Dushistov fs32_to_cpu(sb, usb1->fs_fsbtodb)); 1591da177e4SLinus Torvalds printk(" nrpos: %u\n", fs32_to_cpu(sb, usb3->fs_nrpos)); 160647b7e87SEvgeniy Dushistov printk(" ndir %u\n", 161647b7e87SEvgeniy Dushistov fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir)); 162647b7e87SEvgeniy Dushistov printk(" nifree %u\n", 163647b7e87SEvgeniy Dushistov fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree)); 164647b7e87SEvgeniy Dushistov printk(" nbfree %u\n", 165647b7e87SEvgeniy Dushistov fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree)); 166647b7e87SEvgeniy Dushistov printk(" nffree %u\n", 167647b7e87SEvgeniy Dushistov fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree)); 1681da177e4SLinus Torvalds } 1691da177e4SLinus Torvalds printk("\n"); 1701da177e4SLinus Torvalds } 1711da177e4SLinus Torvalds 1721da177e4SLinus Torvalds /* 1731da177e4SLinus Torvalds * Print contents of ufs_cylinder_group, useful for debugging 1741da177e4SLinus Torvalds */ 175647b7e87SEvgeniy Dushistov static void ufs_print_cylinder_stuff(struct super_block *sb, 176647b7e87SEvgeniy Dushistov struct ufs_cylinder_group *cg) 1771da177e4SLinus Torvalds { 1781da177e4SLinus Torvalds printk("\nufs_print_cylinder_stuff\n"); 17996710b29SAndrew Morton printk("size of ucg: %zu\n", sizeof(struct ufs_cylinder_group)); 1801da177e4SLinus Torvalds printk(" magic: %x\n", fs32_to_cpu(sb, cg->cg_magic)); 1811da177e4SLinus Torvalds printk(" time: %u\n", fs32_to_cpu(sb, cg->cg_time)); 1821da177e4SLinus Torvalds printk(" cgx: %u\n", fs32_to_cpu(sb, cg->cg_cgx)); 1831da177e4SLinus Torvalds printk(" ncyl: %u\n", fs16_to_cpu(sb, cg->cg_ncyl)); 1841da177e4SLinus Torvalds printk(" niblk: %u\n", fs16_to_cpu(sb, cg->cg_niblk)); 1851da177e4SLinus Torvalds printk(" ndblk: %u\n", fs32_to_cpu(sb, cg->cg_ndblk)); 1861da177e4SLinus Torvalds printk(" cs_ndir: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_ndir)); 1871da177e4SLinus Torvalds printk(" cs_nbfree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nbfree)); 1881da177e4SLinus Torvalds printk(" cs_nifree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nifree)); 1891da177e4SLinus Torvalds printk(" cs_nffree: %u\n", fs32_to_cpu(sb, cg->cg_cs.cs_nffree)); 1901da177e4SLinus Torvalds printk(" rotor: %u\n", fs32_to_cpu(sb, cg->cg_rotor)); 1911da177e4SLinus Torvalds printk(" frotor: %u\n", fs32_to_cpu(sb, cg->cg_frotor)); 1921da177e4SLinus Torvalds printk(" irotor: %u\n", fs32_to_cpu(sb, cg->cg_irotor)); 1931da177e4SLinus Torvalds printk(" frsum: %u, %u, %u, %u, %u, %u, %u, %u\n", 1941da177e4SLinus Torvalds fs32_to_cpu(sb, cg->cg_frsum[0]), fs32_to_cpu(sb, cg->cg_frsum[1]), 1951da177e4SLinus Torvalds fs32_to_cpu(sb, cg->cg_frsum[2]), fs32_to_cpu(sb, cg->cg_frsum[3]), 1961da177e4SLinus Torvalds fs32_to_cpu(sb, cg->cg_frsum[4]), fs32_to_cpu(sb, cg->cg_frsum[5]), 1971da177e4SLinus Torvalds fs32_to_cpu(sb, cg->cg_frsum[6]), fs32_to_cpu(sb, cg->cg_frsum[7])); 1981da177e4SLinus Torvalds printk(" btotoff: %u\n", fs32_to_cpu(sb, cg->cg_btotoff)); 1991da177e4SLinus Torvalds printk(" boff: %u\n", fs32_to_cpu(sb, cg->cg_boff)); 2001da177e4SLinus Torvalds printk(" iuseoff: %u\n", fs32_to_cpu(sb, cg->cg_iusedoff)); 2011da177e4SLinus Torvalds printk(" freeoff: %u\n", fs32_to_cpu(sb, cg->cg_freeoff)); 2021da177e4SLinus Torvalds printk(" nextfreeoff: %u\n", fs32_to_cpu(sb, cg->cg_nextfreeoff)); 203647b7e87SEvgeniy Dushistov printk(" clustersumoff %u\n", 204647b7e87SEvgeniy Dushistov fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clustersumoff)); 205647b7e87SEvgeniy Dushistov printk(" clusteroff %u\n", 206647b7e87SEvgeniy Dushistov fs32_to_cpu(sb, cg->cg_u.cg_44.cg_clusteroff)); 207647b7e87SEvgeniy Dushistov printk(" nclusterblks %u\n", 208647b7e87SEvgeniy Dushistov fs32_to_cpu(sb, cg->cg_u.cg_44.cg_nclusterblks)); 2091da177e4SLinus Torvalds printk("\n"); 2101da177e4SLinus Torvalds } 211647b7e87SEvgeniy Dushistov #else 2123313e292SEvgeniy Dushistov # define ufs_print_super_stuff(sb, usb1, usb2, usb3) /**/ 213647b7e87SEvgeniy Dushistov # define ufs_print_cylinder_stuff(sb, cg) /**/ 214abf5d15fSEvgeniy Dushistov #endif /* CONFIG_UFS_DEBUG */ 2151da177e4SLinus Torvalds 2161da177e4SLinus Torvalds static struct super_operations ufs_super_ops; 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds static char error_buf[1024]; 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds void ufs_error (struct super_block * sb, const char * function, 2211da177e4SLinus Torvalds const char * fmt, ...) 2221da177e4SLinus Torvalds { 2231da177e4SLinus Torvalds struct ufs_sb_private_info * uspi; 2241da177e4SLinus Torvalds struct ufs_super_block_first * usb1; 2251da177e4SLinus Torvalds va_list args; 2261da177e4SLinus Torvalds 2271da177e4SLinus Torvalds uspi = UFS_SB(sb)->s_uspi; 2287b4ee73eSEvgeniy usb1 = ubh_get_usb_first(uspi); 2291da177e4SLinus Torvalds 2301da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 2311da177e4SLinus Torvalds usb1->fs_clean = UFS_FSBAD; 2329695ef16SEvgeniy Dushistov ubh_mark_buffer_dirty(USPI_UBH(uspi)); 2331da177e4SLinus Torvalds sb->s_dirt = 1; 2341da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 2351da177e4SLinus Torvalds } 2361da177e4SLinus Torvalds va_start (args, fmt); 2374a6e617aSAlexey Dobriyan vsnprintf (error_buf, sizeof(error_buf), fmt, args); 2381da177e4SLinus Torvalds va_end (args); 2391da177e4SLinus Torvalds switch (UFS_SB(sb)->s_mount_opt & UFS_MOUNT_ONERROR) { 2401da177e4SLinus Torvalds case UFS_MOUNT_ONERROR_PANIC: 2411da177e4SLinus Torvalds panic ("UFS-fs panic (device %s): %s: %s\n", 2421da177e4SLinus Torvalds sb->s_id, function, error_buf); 2431da177e4SLinus Torvalds 2441da177e4SLinus Torvalds case UFS_MOUNT_ONERROR_LOCK: 2451da177e4SLinus Torvalds case UFS_MOUNT_ONERROR_UMOUNT: 2461da177e4SLinus Torvalds case UFS_MOUNT_ONERROR_REPAIR: 2471da177e4SLinus Torvalds printk (KERN_CRIT "UFS-fs error (device %s): %s: %s\n", 2481da177e4SLinus Torvalds sb->s_id, function, error_buf); 2491da177e4SLinus Torvalds } 2501da177e4SLinus Torvalds } 2511da177e4SLinus Torvalds 2521da177e4SLinus Torvalds void ufs_panic (struct super_block * sb, const char * function, 2531da177e4SLinus Torvalds const char * fmt, ...) 2541da177e4SLinus Torvalds { 2551da177e4SLinus Torvalds struct ufs_sb_private_info * uspi; 2561da177e4SLinus Torvalds struct ufs_super_block_first * usb1; 2571da177e4SLinus Torvalds va_list args; 2581da177e4SLinus Torvalds 2591da177e4SLinus Torvalds uspi = UFS_SB(sb)->s_uspi; 2607b4ee73eSEvgeniy usb1 = ubh_get_usb_first(uspi); 2611da177e4SLinus Torvalds 2621da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 2631da177e4SLinus Torvalds usb1->fs_clean = UFS_FSBAD; 2649695ef16SEvgeniy Dushistov ubh_mark_buffer_dirty(USPI_UBH(uspi)); 2651da177e4SLinus Torvalds sb->s_dirt = 1; 2661da177e4SLinus Torvalds } 2671da177e4SLinus Torvalds va_start (args, fmt); 2684a6e617aSAlexey Dobriyan vsnprintf (error_buf, sizeof(error_buf), fmt, args); 2691da177e4SLinus Torvalds va_end (args); 2701da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 2711da177e4SLinus Torvalds printk (KERN_CRIT "UFS-fs panic (device %s): %s: %s\n", 2721da177e4SLinus Torvalds sb->s_id, function, error_buf); 2731da177e4SLinus Torvalds } 2741da177e4SLinus Torvalds 2751da177e4SLinus Torvalds void ufs_warning (struct super_block * sb, const char * function, 2761da177e4SLinus Torvalds const char * fmt, ...) 2771da177e4SLinus Torvalds { 2781da177e4SLinus Torvalds va_list args; 2791da177e4SLinus Torvalds 2801da177e4SLinus Torvalds va_start (args, fmt); 2814a6e617aSAlexey Dobriyan vsnprintf (error_buf, sizeof(error_buf), fmt, args); 2821da177e4SLinus Torvalds va_end (args); 2831da177e4SLinus Torvalds printk (KERN_WARNING "UFS-fs warning (device %s): %s: %s\n", 2841da177e4SLinus Torvalds sb->s_id, function, error_buf); 2851da177e4SLinus Torvalds } 2861da177e4SLinus Torvalds 2871da177e4SLinus Torvalds enum { 2881da177e4SLinus Torvalds Opt_type_old, Opt_type_sunx86, Opt_type_sun, Opt_type_44bsd, 2891da177e4SLinus Torvalds Opt_type_ufs2, Opt_type_hp, Opt_type_nextstepcd, Opt_type_nextstep, 2901da177e4SLinus Torvalds Opt_type_openstep, Opt_onerror_panic, Opt_onerror_lock, 2911da177e4SLinus Torvalds Opt_onerror_umount, Opt_onerror_repair, Opt_err 2921da177e4SLinus Torvalds }; 2931da177e4SLinus Torvalds 2941da177e4SLinus Torvalds static match_table_t tokens = { 2951da177e4SLinus Torvalds {Opt_type_old, "ufstype=old"}, 2961da177e4SLinus Torvalds {Opt_type_sunx86, "ufstype=sunx86"}, 2971da177e4SLinus Torvalds {Opt_type_sun, "ufstype=sun"}, 2981da177e4SLinus Torvalds {Opt_type_44bsd, "ufstype=44bsd"}, 2991da177e4SLinus Torvalds {Opt_type_ufs2, "ufstype=ufs2"}, 3001da177e4SLinus Torvalds {Opt_type_ufs2, "ufstype=5xbsd"}, 3011da177e4SLinus Torvalds {Opt_type_hp, "ufstype=hp"}, 3021da177e4SLinus Torvalds {Opt_type_nextstepcd, "ufstype=nextstep-cd"}, 3031da177e4SLinus Torvalds {Opt_type_nextstep, "ufstype=nextstep"}, 3041da177e4SLinus Torvalds {Opt_type_openstep, "ufstype=openstep"}, 3051da177e4SLinus Torvalds {Opt_onerror_panic, "onerror=panic"}, 3061da177e4SLinus Torvalds {Opt_onerror_lock, "onerror=lock"}, 3071da177e4SLinus Torvalds {Opt_onerror_umount, "onerror=umount"}, 3081da177e4SLinus Torvalds {Opt_onerror_repair, "onerror=repair"}, 3091da177e4SLinus Torvalds {Opt_err, NULL} 3101da177e4SLinus Torvalds }; 3111da177e4SLinus Torvalds 3121da177e4SLinus Torvalds static int ufs_parse_options (char * options, unsigned * mount_options) 3131da177e4SLinus Torvalds { 3141da177e4SLinus Torvalds char * p; 3151da177e4SLinus Torvalds 316abf5d15fSEvgeniy Dushistov UFSD("ENTER\n"); 3171da177e4SLinus Torvalds 3181da177e4SLinus Torvalds if (!options) 3191da177e4SLinus Torvalds return 1; 3201da177e4SLinus Torvalds 3211da177e4SLinus Torvalds while ((p = strsep(&options, ",")) != NULL) { 3221da177e4SLinus Torvalds substring_t args[MAX_OPT_ARGS]; 3231da177e4SLinus Torvalds int token; 3241da177e4SLinus Torvalds if (!*p) 3251da177e4SLinus Torvalds continue; 3261da177e4SLinus Torvalds 3271da177e4SLinus Torvalds token = match_token(p, tokens, args); 3281da177e4SLinus Torvalds switch (token) { 3291da177e4SLinus Torvalds case Opt_type_old: 3301da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3311da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_OLD); 3321da177e4SLinus Torvalds break; 3331da177e4SLinus Torvalds case Opt_type_sunx86: 3341da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3351da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_SUNx86); 3361da177e4SLinus Torvalds break; 3371da177e4SLinus Torvalds case Opt_type_sun: 3381da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3391da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_SUN); 3401da177e4SLinus Torvalds break; 3411da177e4SLinus Torvalds case Opt_type_44bsd: 3421da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3431da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_44BSD); 3441da177e4SLinus Torvalds break; 3451da177e4SLinus Torvalds case Opt_type_ufs2: 3461da177e4SLinus Torvalds ufs_clear_opt(*mount_options, UFSTYPE); 3471da177e4SLinus Torvalds ufs_set_opt(*mount_options, UFSTYPE_UFS2); 3481da177e4SLinus Torvalds break; 3491da177e4SLinus Torvalds case Opt_type_hp: 3501da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3511da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_HP); 3521da177e4SLinus Torvalds break; 3531da177e4SLinus Torvalds case Opt_type_nextstepcd: 3541da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3551da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP_CD); 3561da177e4SLinus Torvalds break; 3571da177e4SLinus Torvalds case Opt_type_nextstep: 3581da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3591da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_NEXTSTEP); 3601da177e4SLinus Torvalds break; 3611da177e4SLinus Torvalds case Opt_type_openstep: 3621da177e4SLinus Torvalds ufs_clear_opt (*mount_options, UFSTYPE); 3631da177e4SLinus Torvalds ufs_set_opt (*mount_options, UFSTYPE_OPENSTEP); 3641da177e4SLinus Torvalds break; 3651da177e4SLinus Torvalds case Opt_onerror_panic: 3661da177e4SLinus Torvalds ufs_clear_opt (*mount_options, ONERROR); 3671da177e4SLinus Torvalds ufs_set_opt (*mount_options, ONERROR_PANIC); 3681da177e4SLinus Torvalds break; 3691da177e4SLinus Torvalds case Opt_onerror_lock: 3701da177e4SLinus Torvalds ufs_clear_opt (*mount_options, ONERROR); 3711da177e4SLinus Torvalds ufs_set_opt (*mount_options, ONERROR_LOCK); 3721da177e4SLinus Torvalds break; 3731da177e4SLinus Torvalds case Opt_onerror_umount: 3741da177e4SLinus Torvalds ufs_clear_opt (*mount_options, ONERROR); 3751da177e4SLinus Torvalds ufs_set_opt (*mount_options, ONERROR_UMOUNT); 3761da177e4SLinus Torvalds break; 3771da177e4SLinus Torvalds case Opt_onerror_repair: 3781da177e4SLinus Torvalds printk("UFS-fs: Unable to do repair on error, " 3791da177e4SLinus Torvalds "will lock lock instead\n"); 3801da177e4SLinus Torvalds ufs_clear_opt (*mount_options, ONERROR); 3811da177e4SLinus Torvalds ufs_set_opt (*mount_options, ONERROR_REPAIR); 3821da177e4SLinus Torvalds break; 3831da177e4SLinus Torvalds default: 3841da177e4SLinus Torvalds printk("UFS-fs: Invalid option: \"%s\" " 3851da177e4SLinus Torvalds "or missing value\n", p); 3861da177e4SLinus Torvalds return 0; 3871da177e4SLinus Torvalds } 3881da177e4SLinus Torvalds } 3891da177e4SLinus Torvalds return 1; 3901da177e4SLinus Torvalds } 3911da177e4SLinus Torvalds 3921da177e4SLinus Torvalds /* 393ee3ffd6cSEvgeniy Dushistov * Diffrent types of UFS hold fs_cstotal in different 394ee3ffd6cSEvgeniy Dushistov * places, and use diffrent data structure for it. 395ee3ffd6cSEvgeniy Dushistov * To make things simplier we just copy fs_cstotal to ufs_sb_private_info 396ee3ffd6cSEvgeniy Dushistov */ 397ee3ffd6cSEvgeniy Dushistov static void ufs_setup_cstotal(struct super_block *sb) 398ee3ffd6cSEvgeniy Dushistov { 399ee3ffd6cSEvgeniy Dushistov struct ufs_sb_info *sbi = UFS_SB(sb); 400ee3ffd6cSEvgeniy Dushistov struct ufs_sb_private_info *uspi = sbi->s_uspi; 401ee3ffd6cSEvgeniy Dushistov struct ufs_super_block_first *usb1; 402ee3ffd6cSEvgeniy Dushistov struct ufs_super_block_second *usb2; 403ee3ffd6cSEvgeniy Dushistov struct ufs_super_block_third *usb3; 404ee3ffd6cSEvgeniy Dushistov unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; 405ee3ffd6cSEvgeniy Dushistov 406ee3ffd6cSEvgeniy Dushistov UFSD("ENTER, mtype=%u\n", mtype); 407ee3ffd6cSEvgeniy Dushistov usb1 = ubh_get_usb_first(uspi); 408ee3ffd6cSEvgeniy Dushistov usb2 = ubh_get_usb_second(uspi); 409ee3ffd6cSEvgeniy Dushistov usb3 = ubh_get_usb_third(uspi); 410ee3ffd6cSEvgeniy Dushistov 411ee3ffd6cSEvgeniy Dushistov if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && 412ee3ffd6cSEvgeniy Dushistov (usb1->fs_flags & UFS_FLAGS_UPDATED)) || 413ee3ffd6cSEvgeniy Dushistov mtype == UFS_MOUNT_UFSTYPE_UFS2) { 414ee3ffd6cSEvgeniy Dushistov /*we have statistic in different place, then usual*/ 415ee3ffd6cSEvgeniy Dushistov uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir); 416ee3ffd6cSEvgeniy Dushistov uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree); 417ee3ffd6cSEvgeniy Dushistov uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree); 418ee3ffd6cSEvgeniy Dushistov uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree); 419ee3ffd6cSEvgeniy Dushistov } else { 420ee3ffd6cSEvgeniy Dushistov uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir); 421ee3ffd6cSEvgeniy Dushistov uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree); 422ee3ffd6cSEvgeniy Dushistov uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree); 423ee3ffd6cSEvgeniy Dushistov uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree); 424ee3ffd6cSEvgeniy Dushistov } 425ee3ffd6cSEvgeniy Dushistov UFSD("EXIT\n"); 426ee3ffd6cSEvgeniy Dushistov } 427ee3ffd6cSEvgeniy Dushistov 428ee3ffd6cSEvgeniy Dushistov /* 4291da177e4SLinus Torvalds * Read on-disk structures associated with cylinder groups 4301da177e4SLinus Torvalds */ 431e295cfcbSEvgeniy Dushistov static int ufs_read_cylinder_structures(struct super_block *sb) 432e295cfcbSEvgeniy Dushistov { 4331da177e4SLinus Torvalds struct ufs_sb_info *sbi = UFS_SB(sb); 434647b7e87SEvgeniy Dushistov struct ufs_sb_private_info *uspi = sbi->s_uspi; 4351da177e4SLinus Torvalds struct ufs_buffer_head * ubh; 4361da177e4SLinus Torvalds unsigned char * base, * space; 4371da177e4SLinus Torvalds unsigned size, blks, i; 438ee3ffd6cSEvgeniy Dushistov struct ufs_super_block_third *usb3; 4391da177e4SLinus Torvalds 440abf5d15fSEvgeniy Dushistov UFSD("ENTER\n"); 4411da177e4SLinus Torvalds 442647b7e87SEvgeniy Dushistov usb3 = ubh_get_usb_third(uspi); 4431da177e4SLinus Torvalds /* 4441da177e4SLinus Torvalds * Read cs structures from (usually) first data block 4451da177e4SLinus Torvalds * on the device. 4461da177e4SLinus Torvalds */ 4471da177e4SLinus Torvalds size = uspi->s_cssize; 4481da177e4SLinus Torvalds blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; 4491da177e4SLinus Torvalds base = space = kmalloc(size, GFP_KERNEL); 4501da177e4SLinus Torvalds if (!base) 4511da177e4SLinus Torvalds goto failed; 452e295cfcbSEvgeniy Dushistov sbi->s_csp = (struct ufs_csum *)space; 4531da177e4SLinus Torvalds for (i = 0; i < blks; i += uspi->s_fpb) { 4541da177e4SLinus Torvalds size = uspi->s_bsize; 4551da177e4SLinus Torvalds if (i + uspi->s_fpb > blks) 4561da177e4SLinus Torvalds size = (blks - i) * uspi->s_fsize; 4571da177e4SLinus Torvalds 4581da177e4SLinus Torvalds ubh = ubh_bread(sb, uspi->s_csaddr + i, size); 4597b4ee73eSEvgeniy 4601da177e4SLinus Torvalds if (!ubh) 4611da177e4SLinus Torvalds goto failed; 4627b4ee73eSEvgeniy 4631da177e4SLinus Torvalds ubh_ubhcpymem (space, ubh, size); 4647b4ee73eSEvgeniy 4651da177e4SLinus Torvalds space += size; 4661da177e4SLinus Torvalds ubh_brelse (ubh); 4671da177e4SLinus Torvalds ubh = NULL; 4681da177e4SLinus Torvalds } 4691da177e4SLinus Torvalds 4701da177e4SLinus Torvalds /* 4711da177e4SLinus Torvalds * Read cylinder group (we read only first fragment from block 4721da177e4SLinus Torvalds * at this time) and prepare internal data structures for cg caching. 4731da177e4SLinus Torvalds */ 4741da177e4SLinus Torvalds if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_KERNEL))) 4751da177e4SLinus Torvalds goto failed; 4761da177e4SLinus Torvalds for (i = 0; i < uspi->s_ncg; i++) 4771da177e4SLinus Torvalds sbi->s_ucg[i] = NULL; 4781da177e4SLinus Torvalds for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { 4791da177e4SLinus Torvalds sbi->s_ucpi[i] = NULL; 4801da177e4SLinus Torvalds sbi->s_cgno[i] = UFS_CGNO_EMPTY; 4811da177e4SLinus Torvalds } 4821da177e4SLinus Torvalds for (i = 0; i < uspi->s_ncg; i++) { 483abf5d15fSEvgeniy Dushistov UFSD("read cg %u\n", i); 4841da177e4SLinus Torvalds if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i)))) 4851da177e4SLinus Torvalds goto failed; 4861da177e4SLinus Torvalds if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data)) 4871da177e4SLinus Torvalds goto failed; 488647b7e87SEvgeniy Dushistov 4891da177e4SLinus Torvalds ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data); 4901da177e4SLinus Torvalds } 4911da177e4SLinus Torvalds for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { 4921da177e4SLinus Torvalds if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_KERNEL))) 4931da177e4SLinus Torvalds goto failed; 4941da177e4SLinus Torvalds sbi->s_cgno[i] = UFS_CGNO_EMPTY; 4951da177e4SLinus Torvalds } 4961da177e4SLinus Torvalds sbi->s_cg_loaded = 0; 497abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 4981da177e4SLinus Torvalds return 1; 4991da177e4SLinus Torvalds 5001da177e4SLinus Torvalds failed: 501f99d49adSJesper Juhl kfree (base); 5021da177e4SLinus Torvalds if (sbi->s_ucg) { 5031da177e4SLinus Torvalds for (i = 0; i < uspi->s_ncg; i++) 504f99d49adSJesper Juhl if (sbi->s_ucg[i]) 505f99d49adSJesper Juhl brelse (sbi->s_ucg[i]); 5061da177e4SLinus Torvalds kfree (sbi->s_ucg); 5071da177e4SLinus Torvalds for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) 508f99d49adSJesper Juhl kfree (sbi->s_ucpi[i]); 5091da177e4SLinus Torvalds } 510abf5d15fSEvgeniy Dushistov UFSD("EXIT (FAILED)\n"); 5111da177e4SLinus Torvalds return 0; 5121da177e4SLinus Torvalds } 5131da177e4SLinus Torvalds 5141da177e4SLinus Torvalds /* 515ee3ffd6cSEvgeniy Dushistov * Sync our internal copy of fs_cstotal with disk 5161da177e4SLinus Torvalds */ 517ee3ffd6cSEvgeniy Dushistov static void ufs_put_cstotal(struct super_block *sb) 518ee3ffd6cSEvgeniy Dushistov { 519ee3ffd6cSEvgeniy Dushistov unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; 520ee3ffd6cSEvgeniy Dushistov struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; 521ee3ffd6cSEvgeniy Dushistov struct ufs_super_block_first *usb1; 522ee3ffd6cSEvgeniy Dushistov struct ufs_super_block_second *usb2; 523ee3ffd6cSEvgeniy Dushistov struct ufs_super_block_third *usb3; 524ee3ffd6cSEvgeniy Dushistov 525ee3ffd6cSEvgeniy Dushistov UFSD("ENTER\n"); 526ee3ffd6cSEvgeniy Dushistov usb1 = ubh_get_usb_first(uspi); 527ee3ffd6cSEvgeniy Dushistov usb2 = ubh_get_usb_second(uspi); 528ee3ffd6cSEvgeniy Dushistov usb3 = ubh_get_usb_third(uspi); 529ee3ffd6cSEvgeniy Dushistov 530ee3ffd6cSEvgeniy Dushistov if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && 531ee3ffd6cSEvgeniy Dushistov (usb1->fs_flags & UFS_FLAGS_UPDATED)) || 532ee3ffd6cSEvgeniy Dushistov mtype == UFS_MOUNT_UFSTYPE_UFS2) { 533ee3ffd6cSEvgeniy Dushistov /*we have statistic in different place, then usual*/ 534ee3ffd6cSEvgeniy Dushistov usb2->fs_un.fs_u2.cs_ndir = 535ee3ffd6cSEvgeniy Dushistov cpu_to_fs64(sb, uspi->cs_total.cs_ndir); 536ee3ffd6cSEvgeniy Dushistov usb2->fs_un.fs_u2.cs_nbfree = 537ee3ffd6cSEvgeniy Dushistov cpu_to_fs64(sb, uspi->cs_total.cs_nbfree); 538ee3ffd6cSEvgeniy Dushistov usb3->fs_un1.fs_u2.cs_nifree = 539ee3ffd6cSEvgeniy Dushistov cpu_to_fs64(sb, uspi->cs_total.cs_nifree); 540ee3ffd6cSEvgeniy Dushistov usb3->fs_un1.fs_u2.cs_nffree = 541ee3ffd6cSEvgeniy Dushistov cpu_to_fs64(sb, uspi->cs_total.cs_nffree); 542ee3ffd6cSEvgeniy Dushistov } else { 543ee3ffd6cSEvgeniy Dushistov usb1->fs_cstotal.cs_ndir = 544ee3ffd6cSEvgeniy Dushistov cpu_to_fs32(sb, uspi->cs_total.cs_ndir); 545ee3ffd6cSEvgeniy Dushistov usb1->fs_cstotal.cs_nbfree = 546ee3ffd6cSEvgeniy Dushistov cpu_to_fs32(sb, uspi->cs_total.cs_nbfree); 547ee3ffd6cSEvgeniy Dushistov usb1->fs_cstotal.cs_nifree = 548ee3ffd6cSEvgeniy Dushistov cpu_to_fs32(sb, uspi->cs_total.cs_nifree); 549ee3ffd6cSEvgeniy Dushistov usb1->fs_cstotal.cs_nffree = 550ee3ffd6cSEvgeniy Dushistov cpu_to_fs32(sb, uspi->cs_total.cs_nffree); 551ee3ffd6cSEvgeniy Dushistov } 552ee3ffd6cSEvgeniy Dushistov ubh_mark_buffer_dirty(USPI_UBH(uspi)); 5533313e292SEvgeniy Dushistov ufs_print_super_stuff(sb, usb1, usb2, usb3); 554ee3ffd6cSEvgeniy Dushistov UFSD("EXIT\n"); 555ee3ffd6cSEvgeniy Dushistov } 556ee3ffd6cSEvgeniy Dushistov 557ee3ffd6cSEvgeniy Dushistov /** 558ee3ffd6cSEvgeniy Dushistov * ufs_put_super_internal() - put on-disk intrenal structures 559ee3ffd6cSEvgeniy Dushistov * @sb: pointer to super_block structure 560ee3ffd6cSEvgeniy Dushistov * Put on-disk structures associated with cylinder groups 561ee3ffd6cSEvgeniy Dushistov * and write them back to disk, also update cs_total on disk 562ee3ffd6cSEvgeniy Dushistov */ 563ee3ffd6cSEvgeniy Dushistov static void ufs_put_super_internal(struct super_block *sb) 564e295cfcbSEvgeniy Dushistov { 5651da177e4SLinus Torvalds struct ufs_sb_info *sbi = UFS_SB(sb); 566ee3ffd6cSEvgeniy Dushistov struct ufs_sb_private_info *uspi = sbi->s_uspi; 5671da177e4SLinus Torvalds struct ufs_buffer_head * ubh; 5681da177e4SLinus Torvalds unsigned char * base, * space; 5691da177e4SLinus Torvalds unsigned blks, size, i; 5701da177e4SLinus Torvalds 571ee3ffd6cSEvgeniy Dushistov 572abf5d15fSEvgeniy Dushistov UFSD("ENTER\n"); 573ee3ffd6cSEvgeniy Dushistov ufs_put_cstotal(sb); 5741da177e4SLinus Torvalds size = uspi->s_cssize; 5751da177e4SLinus Torvalds blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; 576e295cfcbSEvgeniy Dushistov base = space = (char*) sbi->s_csp; 5771da177e4SLinus Torvalds for (i = 0; i < blks; i += uspi->s_fpb) { 5781da177e4SLinus Torvalds size = uspi->s_bsize; 5791da177e4SLinus Torvalds if (i + uspi->s_fpb > blks) 5801da177e4SLinus Torvalds size = (blks - i) * uspi->s_fsize; 5813313e292SEvgeniy Dushistov 5821da177e4SLinus Torvalds ubh = ubh_bread(sb, uspi->s_csaddr + i, size); 5833313e292SEvgeniy Dushistov 5841da177e4SLinus Torvalds ubh_memcpyubh (ubh, space, size); 5851da177e4SLinus Torvalds space += size; 5861da177e4SLinus Torvalds ubh_mark_buffer_uptodate (ubh, 1); 5871da177e4SLinus Torvalds ubh_mark_buffer_dirty (ubh); 5881da177e4SLinus Torvalds ubh_brelse (ubh); 5891da177e4SLinus Torvalds } 5901da177e4SLinus Torvalds for (i = 0; i < sbi->s_cg_loaded; i++) { 5911da177e4SLinus Torvalds ufs_put_cylinder (sb, i); 5921da177e4SLinus Torvalds kfree (sbi->s_ucpi[i]); 5931da177e4SLinus Torvalds } 5941da177e4SLinus Torvalds for (; i < UFS_MAX_GROUP_LOADED; i++) 5951da177e4SLinus Torvalds kfree (sbi->s_ucpi[i]); 5961da177e4SLinus Torvalds for (i = 0; i < uspi->s_ncg; i++) 5971da177e4SLinus Torvalds brelse (sbi->s_ucg[i]); 5981da177e4SLinus Torvalds kfree (sbi->s_ucg); 5991da177e4SLinus Torvalds kfree (base); 600abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 6011da177e4SLinus Torvalds } 6021da177e4SLinus Torvalds 6031da177e4SLinus Torvalds static int ufs_fill_super(struct super_block *sb, void *data, int silent) 6041da177e4SLinus Torvalds { 6051da177e4SLinus Torvalds struct ufs_sb_info * sbi; 6061da177e4SLinus Torvalds struct ufs_sb_private_info * uspi; 6071da177e4SLinus Torvalds struct ufs_super_block_first * usb1; 6081da177e4SLinus Torvalds struct ufs_super_block_second * usb2; 6091da177e4SLinus Torvalds struct ufs_super_block_third * usb3; 6101da177e4SLinus Torvalds struct ufs_buffer_head * ubh; 6111da177e4SLinus Torvalds struct inode *inode; 6121da177e4SLinus Torvalds unsigned block_size, super_block_size; 6131da177e4SLinus Torvalds unsigned flags; 6147b4ee73eSEvgeniy unsigned super_block_offset; 6151da177e4SLinus Torvalds 6161da177e4SLinus Torvalds uspi = NULL; 6171da177e4SLinus Torvalds ubh = NULL; 6181da177e4SLinus Torvalds flags = 0; 6191da177e4SLinus Torvalds 620abf5d15fSEvgeniy Dushistov UFSD("ENTER\n"); 6211da177e4SLinus Torvalds 622f8314dc6SPanagiotis Issaris sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL); 6231da177e4SLinus Torvalds if (!sbi) 6241da177e4SLinus Torvalds goto failed_nomem; 6251da177e4SLinus Torvalds sb->s_fs_info = sbi; 6261da177e4SLinus Torvalds 627abf5d15fSEvgeniy Dushistov UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY)); 6281da177e4SLinus Torvalds 6291da177e4SLinus Torvalds #ifndef CONFIG_UFS_FS_WRITE 6301da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 6311da177e4SLinus Torvalds printk("ufs was compiled with read-only support, " 6321da177e4SLinus Torvalds "can't be mounted as read-write\n"); 6331da177e4SLinus Torvalds goto failed; 6341da177e4SLinus Torvalds } 6351da177e4SLinus Torvalds #endif 6361da177e4SLinus Torvalds /* 6371da177e4SLinus Torvalds * Set default mount options 6381da177e4SLinus Torvalds * Parse mount options 6391da177e4SLinus Torvalds */ 6401da177e4SLinus Torvalds sbi->s_mount_opt = 0; 6411da177e4SLinus Torvalds ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK); 6421da177e4SLinus Torvalds if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) { 6431da177e4SLinus Torvalds printk("wrong mount options\n"); 6441da177e4SLinus Torvalds goto failed; 6451da177e4SLinus Torvalds } 6461da177e4SLinus Torvalds if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) { 6471da177e4SLinus Torvalds if (!silent) 6481da177e4SLinus Torvalds printk("You didn't specify the type of your ufs filesystem\n\n" 6491da177e4SLinus Torvalds "mount -t ufs -o ufstype=" 650c690a722SMichael Owen "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n" 6511da177e4SLinus Torvalds ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, " 6521da177e4SLinus Torvalds "default is ufstype=old\n"); 6531da177e4SLinus Torvalds ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD); 6541da177e4SLinus Torvalds } 6551da177e4SLinus Torvalds 6561da177e4SLinus Torvalds sbi->s_uspi = uspi = 6571da177e4SLinus Torvalds kmalloc (sizeof(struct ufs_sb_private_info), GFP_KERNEL); 6581da177e4SLinus Torvalds if (!uspi) 6591da177e4SLinus Torvalds goto failed; 660f336953bSEvgeniy Dushistov uspi->s_dirblksize = UFS_SECTOR_SIZE; 6617b4ee73eSEvgeniy super_block_offset=UFS_SBLOCK; 6627b4ee73eSEvgeniy 6631da177e4SLinus Torvalds /* Keep 2Gig file limit. Some UFS variants need to override 6641da177e4SLinus Torvalds this but as I don't know which I'll let those in the know loosen 6651da177e4SLinus Torvalds the rules */ 6661da177e4SLinus Torvalds switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) { 6671da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_44BSD: 668abf5d15fSEvgeniy Dushistov UFSD("ufstype=44bsd\n"); 6691da177e4SLinus Torvalds uspi->s_fsize = block_size = 512; 6701da177e4SLinus Torvalds uspi->s_fmask = ~(512 - 1); 6711da177e4SLinus Torvalds uspi->s_fshift = 9; 6721da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 1536; 6731da177e4SLinus Torvalds uspi->s_sbbase = 0; 6741da177e4SLinus Torvalds flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; 6751da177e4SLinus Torvalds break; 6761da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_UFS2: 677abf5d15fSEvgeniy Dushistov UFSD("ufstype=ufs2\n"); 6787b4ee73eSEvgeniy super_block_offset=SBLOCK_UFS2; 6791da177e4SLinus Torvalds uspi->s_fsize = block_size = 512; 6801da177e4SLinus Torvalds uspi->s_fmask = ~(512 - 1); 6811da177e4SLinus Torvalds uspi->s_fshift = 9; 6821da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 1536; 6831da177e4SLinus Torvalds uspi->s_sbbase = 0; 6841da177e4SLinus Torvalds flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; 6851da177e4SLinus Torvalds break; 6861da177e4SLinus Torvalds 6871da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_SUN: 688abf5d15fSEvgeniy Dushistov UFSD("ufstype=sun\n"); 6891da177e4SLinus Torvalds uspi->s_fsize = block_size = 1024; 6901da177e4SLinus Torvalds uspi->s_fmask = ~(1024 - 1); 6911da177e4SLinus Torvalds uspi->s_fshift = 10; 6921da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 2048; 6931da177e4SLinus Torvalds uspi->s_sbbase = 0; 6941da177e4SLinus Torvalds uspi->s_maxsymlinklen = 56; 6951da177e4SLinus Torvalds flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN; 6961da177e4SLinus Torvalds break; 6971da177e4SLinus Torvalds 6981da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_SUNx86: 699abf5d15fSEvgeniy Dushistov UFSD("ufstype=sunx86\n"); 7001da177e4SLinus Torvalds uspi->s_fsize = block_size = 1024; 7011da177e4SLinus Torvalds uspi->s_fmask = ~(1024 - 1); 7021da177e4SLinus Torvalds uspi->s_fshift = 10; 7031da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 2048; 7041da177e4SLinus Torvalds uspi->s_sbbase = 0; 7051da177e4SLinus Torvalds uspi->s_maxsymlinklen = 56; 7061da177e4SLinus Torvalds flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN; 7071da177e4SLinus Torvalds break; 7081da177e4SLinus Torvalds 7091da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_OLD: 710abf5d15fSEvgeniy Dushistov UFSD("ufstype=old\n"); 7111da177e4SLinus Torvalds uspi->s_fsize = block_size = 1024; 7121da177e4SLinus Torvalds uspi->s_fmask = ~(1024 - 1); 7131da177e4SLinus Torvalds uspi->s_fshift = 10; 7141da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 2048; 7151da177e4SLinus Torvalds uspi->s_sbbase = 0; 7161da177e4SLinus Torvalds flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; 7171da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 7181da177e4SLinus Torvalds if (!silent) 7191da177e4SLinus Torvalds printk(KERN_INFO "ufstype=old is supported read-only\n"); 7201da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 7211da177e4SLinus Torvalds } 7221da177e4SLinus Torvalds break; 7231da177e4SLinus Torvalds 7241da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_NEXTSTEP: 725f336953bSEvgeniy Dushistov /*TODO: check may be we need set special dir block size?*/ 726abf5d15fSEvgeniy Dushistov UFSD("ufstype=nextstep\n"); 7271da177e4SLinus Torvalds uspi->s_fsize = block_size = 1024; 7281da177e4SLinus Torvalds uspi->s_fmask = ~(1024 - 1); 7291da177e4SLinus Torvalds uspi->s_fshift = 10; 7301da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 2048; 7311da177e4SLinus Torvalds uspi->s_sbbase = 0; 7321da177e4SLinus Torvalds flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; 7331da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 7341da177e4SLinus Torvalds if (!silent) 7351da177e4SLinus Torvalds printk(KERN_INFO "ufstype=nextstep is supported read-only\n"); 7361da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 7371da177e4SLinus Torvalds } 7381da177e4SLinus Torvalds break; 7391da177e4SLinus Torvalds 7401da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD: 741f336953bSEvgeniy Dushistov /*TODO: check may be we need set special dir block size?*/ 742abf5d15fSEvgeniy Dushistov UFSD("ufstype=nextstep-cd\n"); 7431da177e4SLinus Torvalds uspi->s_fsize = block_size = 2048; 7441da177e4SLinus Torvalds uspi->s_fmask = ~(2048 - 1); 7451da177e4SLinus Torvalds uspi->s_fshift = 11; 7461da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 2048; 7471da177e4SLinus Torvalds uspi->s_sbbase = 0; 7481da177e4SLinus Torvalds flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; 7491da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 7501da177e4SLinus Torvalds if (!silent) 7511da177e4SLinus Torvalds printk(KERN_INFO "ufstype=nextstep-cd is supported read-only\n"); 7521da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 7531da177e4SLinus Torvalds } 7541da177e4SLinus Torvalds break; 7551da177e4SLinus Torvalds 7561da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_OPENSTEP: 757abf5d15fSEvgeniy Dushistov UFSD("ufstype=openstep\n"); 7581da177e4SLinus Torvalds uspi->s_fsize = block_size = 1024; 7591da177e4SLinus Torvalds uspi->s_fmask = ~(1024 - 1); 7601da177e4SLinus Torvalds uspi->s_fshift = 10; 7611da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 2048; 7621da177e4SLinus Torvalds uspi->s_sbbase = 0; 763f336953bSEvgeniy Dushistov uspi->s_dirblksize = 1024; 7641da177e4SLinus Torvalds flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; 7651da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 7661da177e4SLinus Torvalds if (!silent) 7671da177e4SLinus Torvalds printk(KERN_INFO "ufstype=openstep is supported read-only\n"); 7681da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 7691da177e4SLinus Torvalds } 7701da177e4SLinus Torvalds break; 7711da177e4SLinus Torvalds 7721da177e4SLinus Torvalds case UFS_MOUNT_UFSTYPE_HP: 773abf5d15fSEvgeniy Dushistov UFSD("ufstype=hp\n"); 7741da177e4SLinus Torvalds uspi->s_fsize = block_size = 1024; 7751da177e4SLinus Torvalds uspi->s_fmask = ~(1024 - 1); 7761da177e4SLinus Torvalds uspi->s_fshift = 10; 7771da177e4SLinus Torvalds uspi->s_sbsize = super_block_size = 2048; 7781da177e4SLinus Torvalds uspi->s_sbbase = 0; 7791da177e4SLinus Torvalds flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; 7801da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 7811da177e4SLinus Torvalds if (!silent) 7821da177e4SLinus Torvalds printk(KERN_INFO "ufstype=hp is supported read-only\n"); 7831da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 7841da177e4SLinus Torvalds } 7851da177e4SLinus Torvalds break; 7861da177e4SLinus Torvalds default: 7871da177e4SLinus Torvalds if (!silent) 7881da177e4SLinus Torvalds printk("unknown ufstype\n"); 7891da177e4SLinus Torvalds goto failed; 7901da177e4SLinus Torvalds } 7911da177e4SLinus Torvalds 7921da177e4SLinus Torvalds again: 7931da177e4SLinus Torvalds if (!sb_set_blocksize(sb, block_size)) { 7941da177e4SLinus Torvalds printk(KERN_ERR "UFS: failed to set blocksize\n"); 7951da177e4SLinus Torvalds goto failed; 7961da177e4SLinus Torvalds } 7971da177e4SLinus Torvalds 7981da177e4SLinus Torvalds /* 7991da177e4SLinus Torvalds * read ufs super block from device 8001da177e4SLinus Torvalds */ 8017b4ee73eSEvgeniy 8027b4ee73eSEvgeniy ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size); 8037b4ee73eSEvgeniy 8041da177e4SLinus Torvalds if (!ubh) 8051da177e4SLinus Torvalds goto failed; 8061da177e4SLinus Torvalds 8071da177e4SLinus Torvalds 8087b4ee73eSEvgeniy usb1 = ubh_get_usb_first(uspi); 8097b4ee73eSEvgeniy usb2 = ubh_get_usb_second(uspi); 8107b4ee73eSEvgeniy usb3 = ubh_get_usb_third(uspi); 8111da177e4SLinus Torvalds 8121da177e4SLinus Torvalds /* 8131da177e4SLinus Torvalds * Check ufs magic number 8141da177e4SLinus Torvalds */ 8151da177e4SLinus Torvalds sbi->s_bytesex = BYTESEX_LE; 8161da177e4SLinus Torvalds switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { 8171da177e4SLinus Torvalds case UFS_MAGIC: 8181da177e4SLinus Torvalds case UFS2_MAGIC: 8191da177e4SLinus Torvalds case UFS_MAGIC_LFN: 8201da177e4SLinus Torvalds case UFS_MAGIC_FEA: 8211da177e4SLinus Torvalds case UFS_MAGIC_4GB: 8221da177e4SLinus Torvalds goto magic_found; 8231da177e4SLinus Torvalds } 8241da177e4SLinus Torvalds sbi->s_bytesex = BYTESEX_BE; 8251da177e4SLinus Torvalds switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { 8261da177e4SLinus Torvalds case UFS_MAGIC: 8271da177e4SLinus Torvalds case UFS2_MAGIC: 8281da177e4SLinus Torvalds case UFS_MAGIC_LFN: 8291da177e4SLinus Torvalds case UFS_MAGIC_FEA: 8301da177e4SLinus Torvalds case UFS_MAGIC_4GB: 8311da177e4SLinus Torvalds goto magic_found; 8321da177e4SLinus Torvalds } 8331da177e4SLinus Torvalds 8341da177e4SLinus Torvalds if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP) 8351da177e4SLinus Torvalds || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD) 8361da177e4SLinus Torvalds || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP)) 8371da177e4SLinus Torvalds && uspi->s_sbbase < 256) { 8381da177e4SLinus Torvalds ubh_brelse_uspi(uspi); 8391da177e4SLinus Torvalds ubh = NULL; 8401da177e4SLinus Torvalds uspi->s_sbbase += 8; 8411da177e4SLinus Torvalds goto again; 8421da177e4SLinus Torvalds } 8431da177e4SLinus Torvalds if (!silent) 8441da177e4SLinus Torvalds printk("ufs_read_super: bad magic number\n"); 8451da177e4SLinus Torvalds goto failed; 8461da177e4SLinus Torvalds 8471da177e4SLinus Torvalds magic_found: 8481da177e4SLinus Torvalds /* 8491da177e4SLinus Torvalds * Check block and fragment sizes 8501da177e4SLinus Torvalds */ 8511da177e4SLinus Torvalds uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize); 8521da177e4SLinus Torvalds uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize); 8531da177e4SLinus Torvalds uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize); 8541da177e4SLinus Torvalds uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); 8551da177e4SLinus Torvalds uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); 8561da177e4SLinus Torvalds 8571da177e4SLinus Torvalds if (uspi->s_fsize & (uspi->s_fsize - 1)) { 8581da177e4SLinus Torvalds printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n", 8591da177e4SLinus Torvalds uspi->s_fsize); 8601da177e4SLinus Torvalds goto failed; 8611da177e4SLinus Torvalds } 8621da177e4SLinus Torvalds if (uspi->s_fsize < 512) { 8631da177e4SLinus Torvalds printk(KERN_ERR "ufs_read_super: fragment size %u is too small\n", 8641da177e4SLinus Torvalds uspi->s_fsize); 8651da177e4SLinus Torvalds goto failed; 8661da177e4SLinus Torvalds } 8671da177e4SLinus Torvalds if (uspi->s_fsize > 4096) { 8681da177e4SLinus Torvalds printk(KERN_ERR "ufs_read_super: fragment size %u is too large\n", 8691da177e4SLinus Torvalds uspi->s_fsize); 8701da177e4SLinus Torvalds goto failed; 8711da177e4SLinus Torvalds } 8721da177e4SLinus Torvalds if (uspi->s_bsize & (uspi->s_bsize - 1)) { 8731da177e4SLinus Torvalds printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n", 8741da177e4SLinus Torvalds uspi->s_bsize); 8751da177e4SLinus Torvalds goto failed; 8761da177e4SLinus Torvalds } 8771da177e4SLinus Torvalds if (uspi->s_bsize < 4096) { 8781da177e4SLinus Torvalds printk(KERN_ERR "ufs_read_super: block size %u is too small\n", 8791da177e4SLinus Torvalds uspi->s_bsize); 8801da177e4SLinus Torvalds goto failed; 8811da177e4SLinus Torvalds } 8821da177e4SLinus Torvalds if (uspi->s_bsize / uspi->s_fsize > 8) { 8831da177e4SLinus Torvalds printk(KERN_ERR "ufs_read_super: too many fragments per block (%u)\n", 8841da177e4SLinus Torvalds uspi->s_bsize / uspi->s_fsize); 8851da177e4SLinus Torvalds goto failed; 8861da177e4SLinus Torvalds } 8871da177e4SLinus Torvalds if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) { 8881da177e4SLinus Torvalds ubh_brelse_uspi(uspi); 8891da177e4SLinus Torvalds ubh = NULL; 8901da177e4SLinus Torvalds block_size = uspi->s_fsize; 8911da177e4SLinus Torvalds super_block_size = uspi->s_sbsize; 892abf5d15fSEvgeniy Dushistov UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size); 8931da177e4SLinus Torvalds goto again; 8941da177e4SLinus Torvalds } 8951da177e4SLinus Torvalds 896647b7e87SEvgeniy Dushistov 8973313e292SEvgeniy Dushistov ufs_print_super_stuff(sb, usb1, usb2, usb3); 8981da177e4SLinus Torvalds 8991da177e4SLinus Torvalds /* 9001da177e4SLinus Torvalds * Check, if file system was correctly unmounted. 9011da177e4SLinus Torvalds * If not, make it read only. 9021da177e4SLinus Torvalds */ 9031da177e4SLinus Torvalds if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) || 9041da177e4SLinus Torvalds ((flags & UFS_ST_MASK) == UFS_ST_OLD) || 9051da177e4SLinus Torvalds (((flags & UFS_ST_MASK) == UFS_ST_SUN || 9061da177e4SLinus Torvalds (flags & UFS_ST_MASK) == UFS_ST_SUNx86) && 9071da177e4SLinus Torvalds (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) { 9081da177e4SLinus Torvalds switch(usb1->fs_clean) { 9091da177e4SLinus Torvalds case UFS_FSCLEAN: 910abf5d15fSEvgeniy Dushistov UFSD("fs is clean\n"); 9111da177e4SLinus Torvalds break; 9121da177e4SLinus Torvalds case UFS_FSSTABLE: 913abf5d15fSEvgeniy Dushistov UFSD("fs is stable\n"); 9141da177e4SLinus Torvalds break; 9151da177e4SLinus Torvalds case UFS_FSOSF1: 916abf5d15fSEvgeniy Dushistov UFSD("fs is DEC OSF/1\n"); 9171da177e4SLinus Torvalds break; 9181da177e4SLinus Torvalds case UFS_FSACTIVE: 9191da177e4SLinus Torvalds printk("ufs_read_super: fs is active\n"); 9201da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 9211da177e4SLinus Torvalds break; 9221da177e4SLinus Torvalds case UFS_FSBAD: 9231da177e4SLinus Torvalds printk("ufs_read_super: fs is bad\n"); 9241da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 9251da177e4SLinus Torvalds break; 9261da177e4SLinus Torvalds default: 9271da177e4SLinus Torvalds printk("ufs_read_super: can't grok fs_clean 0x%x\n", usb1->fs_clean); 9281da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 9291da177e4SLinus Torvalds break; 9301da177e4SLinus Torvalds } 931ee3ffd6cSEvgeniy Dushistov } else { 9321da177e4SLinus Torvalds printk("ufs_read_super: fs needs fsck\n"); 9331da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 9341da177e4SLinus Torvalds } 9351da177e4SLinus Torvalds 9361da177e4SLinus Torvalds /* 9371da177e4SLinus Torvalds * Read ufs_super_block into internal data structures 9381da177e4SLinus Torvalds */ 9391da177e4SLinus Torvalds sb->s_op = &ufs_super_ops; 9401da177e4SLinus Torvalds sb->dq_op = NULL; /***/ 9411da177e4SLinus Torvalds sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic); 9421da177e4SLinus Torvalds 9431da177e4SLinus Torvalds uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno); 9441da177e4SLinus Torvalds uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno); 9451da177e4SLinus Torvalds uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno); 9461da177e4SLinus Torvalds uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno); 9471da177e4SLinus Torvalds uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset); 9481da177e4SLinus Torvalds uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask); 9491da177e4SLinus Torvalds 9501da177e4SLinus Torvalds if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { 951647b7e87SEvgeniy Dushistov uspi->s_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size); 952647b7e87SEvgeniy Dushistov uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); 953647b7e87SEvgeniy Dushistov } else { 9541da177e4SLinus Torvalds uspi->s_size = fs32_to_cpu(sb, usb1->fs_size); 9551da177e4SLinus Torvalds uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize); 9561da177e4SLinus Torvalds } 9571da177e4SLinus Torvalds 9581da177e4SLinus Torvalds uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg); 9591da177e4SLinus Torvalds /* s_bsize already set */ 9601da177e4SLinus Torvalds /* s_fsize already set */ 9611da177e4SLinus Torvalds uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag); 9621da177e4SLinus Torvalds uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree); 9631da177e4SLinus Torvalds uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask); 9641da177e4SLinus Torvalds uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); 9651da177e4SLinus Torvalds uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift); 9661da177e4SLinus Torvalds uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); 967abf5d15fSEvgeniy Dushistov UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift, 968abf5d15fSEvgeniy Dushistov uspi->s_fshift); 9691da177e4SLinus Torvalds uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift); 9701da177e4SLinus Torvalds uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb); 9711da177e4SLinus Torvalds /* s_sbsize already set */ 9721da177e4SLinus Torvalds uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask); 9731da177e4SLinus Torvalds uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift); 9741da177e4SLinus Torvalds uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir); 9751da177e4SLinus Torvalds uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb); 9761da177e4SLinus Torvalds uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf); 9771da177e4SLinus Torvalds uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3); 9781da177e4SLinus Torvalds uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave); 9791da177e4SLinus Torvalds uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew); 9803313e292SEvgeniy Dushistov 9813313e292SEvgeniy Dushistov if (uspi->fs_magic == UFS2_MAGIC) 9823313e292SEvgeniy Dushistov uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr); 9833313e292SEvgeniy Dushistov else 9841da177e4SLinus Torvalds uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr); 9853313e292SEvgeniy Dushistov 9861da177e4SLinus Torvalds uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize); 9871da177e4SLinus Torvalds uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize); 9881da177e4SLinus Torvalds uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak); 9891da177e4SLinus Torvalds uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect); 9901da177e4SLinus Torvalds uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc); 9911da177e4SLinus Torvalds uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg); 9921da177e4SLinus Torvalds uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg); 993647b7e87SEvgeniy Dushistov uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc); 994647b7e87SEvgeniy Dushistov uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize); 9951da177e4SLinus Torvalds uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3); 9961da177e4SLinus Torvalds uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3); 9971da177e4SLinus Torvalds uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat); 9981da177e4SLinus Torvalds uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos); 9991da177e4SLinus Torvalds uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff); 10001da177e4SLinus Torvalds uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff); 10011da177e4SLinus Torvalds 10021da177e4SLinus Torvalds /* 10031da177e4SLinus Torvalds * Compute another frequently used values 10041da177e4SLinus Torvalds */ 10051da177e4SLinus Torvalds uspi->s_fpbmask = uspi->s_fpb - 1; 1006abf5d15fSEvgeniy Dushistov if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) 10071da177e4SLinus Torvalds uspi->s_apbshift = uspi->s_bshift - 3; 1008abf5d15fSEvgeniy Dushistov else 10091da177e4SLinus Torvalds uspi->s_apbshift = uspi->s_bshift - 2; 1010abf5d15fSEvgeniy Dushistov 10111da177e4SLinus Torvalds uspi->s_2apbshift = uspi->s_apbshift * 2; 10121da177e4SLinus Torvalds uspi->s_3apbshift = uspi->s_apbshift * 3; 10131da177e4SLinus Torvalds uspi->s_apb = 1 << uspi->s_apbshift; 10141da177e4SLinus Torvalds uspi->s_2apb = 1 << uspi->s_2apbshift; 10151da177e4SLinus Torvalds uspi->s_3apb = 1 << uspi->s_3apbshift; 10161da177e4SLinus Torvalds uspi->s_apbmask = uspi->s_apb - 1; 10171da177e4SLinus Torvalds uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS; 10181da177e4SLinus Torvalds uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift; 10191da177e4SLinus Torvalds uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift; 10201da177e4SLinus Torvalds uspi->s_bpf = uspi->s_fsize << 3; 10211da177e4SLinus Torvalds uspi->s_bpfshift = uspi->s_fshift + 3; 10221da177e4SLinus Torvalds uspi->s_bpfmask = uspi->s_bpf - 1; 10231da177e4SLinus Torvalds if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == 10241da177e4SLinus Torvalds UFS_MOUNT_UFSTYPE_44BSD) 10251da177e4SLinus Torvalds uspi->s_maxsymlinklen = 1026647b7e87SEvgeniy Dushistov fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen); 10271da177e4SLinus Torvalds 10281da177e4SLinus Torvalds sbi->s_flags = flags; 10291da177e4SLinus Torvalds 10301da177e4SLinus Torvalds inode = iget(sb, UFS_ROOTINO); 10311da177e4SLinus Torvalds if (!inode || is_bad_inode(inode)) 10321da177e4SLinus Torvalds goto failed; 10331da177e4SLinus Torvalds sb->s_root = d_alloc_root(inode); 10341da177e4SLinus Torvalds if (!sb->s_root) 10351da177e4SLinus Torvalds goto dalloc_failed; 10361da177e4SLinus Torvalds 1037ee3ffd6cSEvgeniy Dushistov ufs_setup_cstotal(sb); 10381da177e4SLinus Torvalds /* 10391da177e4SLinus Torvalds * Read cylinder group structures 10401da177e4SLinus Torvalds */ 10411da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) 10421da177e4SLinus Torvalds if (!ufs_read_cylinder_structures(sb)) 10431da177e4SLinus Torvalds goto failed; 10441da177e4SLinus Torvalds 1045abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 10461da177e4SLinus Torvalds return 0; 10471da177e4SLinus Torvalds 10481da177e4SLinus Torvalds dalloc_failed: 10491da177e4SLinus Torvalds iput(inode); 10501da177e4SLinus Torvalds failed: 1051f99d49adSJesper Juhl if (ubh) 1052f99d49adSJesper Juhl ubh_brelse_uspi (uspi); 1053f99d49adSJesper Juhl kfree (uspi); 1054f99d49adSJesper Juhl kfree(sbi); 10551da177e4SLinus Torvalds sb->s_fs_info = NULL; 1056abf5d15fSEvgeniy Dushistov UFSD("EXIT (FAILED)\n"); 10571da177e4SLinus Torvalds return -EINVAL; 10581da177e4SLinus Torvalds 10591da177e4SLinus Torvalds failed_nomem: 1060abf5d15fSEvgeniy Dushistov UFSD("EXIT (NOMEM)\n"); 10611da177e4SLinus Torvalds return -ENOMEM; 10621da177e4SLinus Torvalds } 10631da177e4SLinus Torvalds 1064647b7e87SEvgeniy Dushistov static void ufs_write_super(struct super_block *sb) 1065647b7e87SEvgeniy Dushistov { 10661da177e4SLinus Torvalds struct ufs_sb_private_info * uspi; 10671da177e4SLinus Torvalds struct ufs_super_block_first * usb1; 10681da177e4SLinus Torvalds struct ufs_super_block_third * usb3; 10691da177e4SLinus Torvalds unsigned flags; 10701da177e4SLinus Torvalds 10711da177e4SLinus Torvalds lock_kernel(); 1072abf5d15fSEvgeniy Dushistov UFSD("ENTER\n"); 10731da177e4SLinus Torvalds flags = UFS_SB(sb)->s_flags; 10741da177e4SLinus Torvalds uspi = UFS_SB(sb)->s_uspi; 10757b4ee73eSEvgeniy usb1 = ubh_get_usb_first(uspi); 10767b4ee73eSEvgeniy usb3 = ubh_get_usb_third(uspi); 10771da177e4SLinus Torvalds 10781da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) { 10791da177e4SLinus Torvalds usb1->fs_time = cpu_to_fs32(sb, get_seconds()); 10801da177e4SLinus Torvalds if ((flags & UFS_ST_MASK) == UFS_ST_SUN 10811da177e4SLinus Torvalds || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) 10821da177e4SLinus Torvalds ufs_set_fs_state(sb, usb1, usb3, 10831da177e4SLinus Torvalds UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); 1084ee3ffd6cSEvgeniy Dushistov ufs_put_cstotal(sb); 10851da177e4SLinus Torvalds } 10861da177e4SLinus Torvalds sb->s_dirt = 0; 1087abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 10881da177e4SLinus Torvalds unlock_kernel(); 10891da177e4SLinus Torvalds } 10901da177e4SLinus Torvalds 10911da177e4SLinus Torvalds static void ufs_put_super(struct super_block *sb) 10921da177e4SLinus Torvalds { 10931da177e4SLinus Torvalds struct ufs_sb_info * sbi = UFS_SB(sb); 10941da177e4SLinus Torvalds 1095abf5d15fSEvgeniy Dushistov UFSD("ENTER\n"); 10961da177e4SLinus Torvalds 10971da177e4SLinus Torvalds if (!(sb->s_flags & MS_RDONLY)) 1098ee3ffd6cSEvgeniy Dushistov ufs_put_super_internal(sb); 10991da177e4SLinus Torvalds 11001da177e4SLinus Torvalds ubh_brelse_uspi (sbi->s_uspi); 11011da177e4SLinus Torvalds kfree (sbi->s_uspi); 11021da177e4SLinus Torvalds kfree (sbi); 11031da177e4SLinus Torvalds sb->s_fs_info = NULL; 1104abf5d15fSEvgeniy Dushistov UFSD("EXIT\n"); 11051da177e4SLinus Torvalds return; 11061da177e4SLinus Torvalds } 11071da177e4SLinus Torvalds 11081da177e4SLinus Torvalds 11091da177e4SLinus Torvalds static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) 11101da177e4SLinus Torvalds { 11111da177e4SLinus Torvalds struct ufs_sb_private_info * uspi; 11121da177e4SLinus Torvalds struct ufs_super_block_first * usb1; 11131da177e4SLinus Torvalds struct ufs_super_block_third * usb3; 11141da177e4SLinus Torvalds unsigned new_mount_opt, ufstype; 11151da177e4SLinus Torvalds unsigned flags; 11161da177e4SLinus Torvalds 11171da177e4SLinus Torvalds uspi = UFS_SB(sb)->s_uspi; 11181da177e4SLinus Torvalds flags = UFS_SB(sb)->s_flags; 11197b4ee73eSEvgeniy usb1 = ubh_get_usb_first(uspi); 11207b4ee73eSEvgeniy usb3 = ubh_get_usb_third(uspi); 11211da177e4SLinus Torvalds 11221da177e4SLinus Torvalds /* 11231da177e4SLinus Torvalds * Allow the "check" option to be passed as a remount option. 11241da177e4SLinus Torvalds * It is not possible to change ufstype option during remount 11251da177e4SLinus Torvalds */ 11261da177e4SLinus Torvalds ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; 11271da177e4SLinus Torvalds new_mount_opt = 0; 11281da177e4SLinus Torvalds ufs_set_opt (new_mount_opt, ONERROR_LOCK); 11291da177e4SLinus Torvalds if (!ufs_parse_options (data, &new_mount_opt)) 11301da177e4SLinus Torvalds return -EINVAL; 11311da177e4SLinus Torvalds if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) { 11321da177e4SLinus Torvalds new_mount_opt |= ufstype; 1133ee3ffd6cSEvgeniy Dushistov } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { 11341da177e4SLinus Torvalds printk("ufstype can't be changed during remount\n"); 11351da177e4SLinus Torvalds return -EINVAL; 11361da177e4SLinus Torvalds } 11371da177e4SLinus Torvalds 11381da177e4SLinus Torvalds if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) { 11391da177e4SLinus Torvalds UFS_SB(sb)->s_mount_opt = new_mount_opt; 11401da177e4SLinus Torvalds return 0; 11411da177e4SLinus Torvalds } 11421da177e4SLinus Torvalds 11431da177e4SLinus Torvalds /* 11441da177e4SLinus Torvalds * fs was mouted as rw, remounting ro 11451da177e4SLinus Torvalds */ 11461da177e4SLinus Torvalds if (*mount_flags & MS_RDONLY) { 1147ee3ffd6cSEvgeniy Dushistov ufs_put_super_internal(sb); 11481da177e4SLinus Torvalds usb1->fs_time = cpu_to_fs32(sb, get_seconds()); 11491da177e4SLinus Torvalds if ((flags & UFS_ST_MASK) == UFS_ST_SUN 11501da177e4SLinus Torvalds || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) 11511da177e4SLinus Torvalds ufs_set_fs_state(sb, usb1, usb3, 11521da177e4SLinus Torvalds UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); 11539695ef16SEvgeniy Dushistov ubh_mark_buffer_dirty (USPI_UBH(uspi)); 11541da177e4SLinus Torvalds sb->s_dirt = 0; 11551da177e4SLinus Torvalds sb->s_flags |= MS_RDONLY; 1156ee3ffd6cSEvgeniy Dushistov } else { 11571da177e4SLinus Torvalds /* 11581da177e4SLinus Torvalds * fs was mounted as ro, remounting rw 11591da177e4SLinus Torvalds */ 11601da177e4SLinus Torvalds #ifndef CONFIG_UFS_FS_WRITE 11611da177e4SLinus Torvalds printk("ufs was compiled with read-only support, " 11621da177e4SLinus Torvalds "can't be mounted as read-write\n"); 11631da177e4SLinus Torvalds return -EINVAL; 11641da177e4SLinus Torvalds #else 11651da177e4SLinus Torvalds if (ufstype != UFS_MOUNT_UFSTYPE_SUN && 11661da177e4SLinus Torvalds ufstype != UFS_MOUNT_UFSTYPE_44BSD && 1167cbcae39fSEvgeniy Dushistov ufstype != UFS_MOUNT_UFSTYPE_SUNx86 && 1168cbcae39fSEvgeniy Dushistov ufstype != UFS_MOUNT_UFSTYPE_UFS2) { 11691da177e4SLinus Torvalds printk("this ufstype is read-only supported\n"); 11701da177e4SLinus Torvalds return -EINVAL; 11711da177e4SLinus Torvalds } 11721da177e4SLinus Torvalds if (!ufs_read_cylinder_structures(sb)) { 11731da177e4SLinus Torvalds printk("failed during remounting\n"); 11741da177e4SLinus Torvalds return -EPERM; 11751da177e4SLinus Torvalds } 11761da177e4SLinus Torvalds sb->s_flags &= ~MS_RDONLY; 11771da177e4SLinus Torvalds #endif 11781da177e4SLinus Torvalds } 11791da177e4SLinus Torvalds UFS_SB(sb)->s_mount_opt = new_mount_opt; 11801da177e4SLinus Torvalds return 0; 11811da177e4SLinus Torvalds } 11821da177e4SLinus Torvalds 1183726c3342SDavid Howells static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf) 11841da177e4SLinus Torvalds { 1185726c3342SDavid Howells struct super_block *sb = dentry->d_sb; 1186647b7e87SEvgeniy Dushistov struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi; 1187647b7e87SEvgeniy Dushistov unsigned flags = UFS_SB(sb)->s_flags; 11881da177e4SLinus Torvalds struct ufs_super_block_first *usb1; 1189647b7e87SEvgeniy Dushistov struct ufs_super_block_second *usb2; 1190647b7e87SEvgeniy Dushistov struct ufs_super_block_third *usb3; 11911da177e4SLinus Torvalds 11921da177e4SLinus Torvalds lock_kernel(); 11931da177e4SLinus Torvalds 11947b4ee73eSEvgeniy usb1 = ubh_get_usb_first(uspi); 1195647b7e87SEvgeniy Dushistov usb2 = ubh_get_usb_second(uspi); 1196647b7e87SEvgeniy Dushistov usb3 = ubh_get_usb_third(uspi); 11971da177e4SLinus Torvalds 11981da177e4SLinus Torvalds if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { 11991da177e4SLinus Torvalds buf->f_type = UFS2_MAGIC; 1200647b7e87SEvgeniy Dushistov buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); 1201647b7e87SEvgeniy Dushistov } else { 12021da177e4SLinus Torvalds buf->f_type = UFS_MAGIC; 12031da177e4SLinus Torvalds buf->f_blocks = uspi->s_dsize; 12041da177e4SLinus Torvalds } 1205ee3ffd6cSEvgeniy Dushistov buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) + 1206ee3ffd6cSEvgeniy Dushistov uspi->cs_total.cs_nffree; 1207ee3ffd6cSEvgeniy Dushistov buf->f_ffree = uspi->cs_total.cs_nifree; 12081da177e4SLinus Torvalds buf->f_bsize = sb->s_blocksize; 12091da177e4SLinus Torvalds buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree)) 12101da177e4SLinus Torvalds ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0; 12111da177e4SLinus Torvalds buf->f_files = uspi->s_ncg * uspi->s_ipg; 12121da177e4SLinus Torvalds buf->f_namelen = UFS_MAXNAMLEN; 12131da177e4SLinus Torvalds 12141da177e4SLinus Torvalds unlock_kernel(); 12151da177e4SLinus Torvalds 12161da177e4SLinus Torvalds return 0; 12171da177e4SLinus Torvalds } 12181da177e4SLinus Torvalds 1219e18b890bSChristoph Lameter static struct kmem_cache * ufs_inode_cachep; 12201da177e4SLinus Torvalds 12211da177e4SLinus Torvalds static struct inode *ufs_alloc_inode(struct super_block *sb) 12221da177e4SLinus Torvalds { 12231da177e4SLinus Torvalds struct ufs_inode_info *ei; 1224e94b1766SChristoph Lameter ei = (struct ufs_inode_info *)kmem_cache_alloc(ufs_inode_cachep, GFP_KERNEL); 12251da177e4SLinus Torvalds if (!ei) 12261da177e4SLinus Torvalds return NULL; 12271da177e4SLinus Torvalds ei->vfs_inode.i_version = 1; 12281da177e4SLinus Torvalds return &ei->vfs_inode; 12291da177e4SLinus Torvalds } 12301da177e4SLinus Torvalds 12311da177e4SLinus Torvalds static void ufs_destroy_inode(struct inode *inode) 12321da177e4SLinus Torvalds { 12331da177e4SLinus Torvalds kmem_cache_free(ufs_inode_cachep, UFS_I(inode)); 12341da177e4SLinus Torvalds } 12351da177e4SLinus Torvalds 1236e18b890bSChristoph Lameter static void init_once(void * foo, struct kmem_cache * cachep, unsigned long flags) 12371da177e4SLinus Torvalds { 12381da177e4SLinus Torvalds struct ufs_inode_info *ei = (struct ufs_inode_info *) foo; 12391da177e4SLinus Torvalds 12401da177e4SLinus Torvalds if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) == 12411da177e4SLinus Torvalds SLAB_CTOR_CONSTRUCTOR) 12421da177e4SLinus Torvalds inode_init_once(&ei->vfs_inode); 12431da177e4SLinus Torvalds } 12441da177e4SLinus Torvalds 12451da177e4SLinus Torvalds static int init_inodecache(void) 12461da177e4SLinus Torvalds { 12471da177e4SLinus Torvalds ufs_inode_cachep = kmem_cache_create("ufs_inode_cache", 12481da177e4SLinus Torvalds sizeof(struct ufs_inode_info), 1249fffb60f9SPaul Jackson 0, (SLAB_RECLAIM_ACCOUNT| 1250fffb60f9SPaul Jackson SLAB_MEM_SPREAD), 12511da177e4SLinus Torvalds init_once, NULL); 12521da177e4SLinus Torvalds if (ufs_inode_cachep == NULL) 12531da177e4SLinus Torvalds return -ENOMEM; 12541da177e4SLinus Torvalds return 0; 12551da177e4SLinus Torvalds } 12561da177e4SLinus Torvalds 12571da177e4SLinus Torvalds static void destroy_inodecache(void) 12581da177e4SLinus Torvalds { 12591a1d92c1SAlexey Dobriyan kmem_cache_destroy(ufs_inode_cachep); 12601da177e4SLinus Torvalds } 12611da177e4SLinus Torvalds 12621da177e4SLinus Torvalds #ifdef CONFIG_QUOTA 12631da177e4SLinus Torvalds static ssize_t ufs_quota_read(struct super_block *, int, char *,size_t, loff_t); 12641da177e4SLinus Torvalds static ssize_t ufs_quota_write(struct super_block *, int, const char *, size_t, loff_t); 12651da177e4SLinus Torvalds #endif 12661da177e4SLinus Torvalds 12671da177e4SLinus Torvalds static struct super_operations ufs_super_ops = { 12681da177e4SLinus Torvalds .alloc_inode = ufs_alloc_inode, 12691da177e4SLinus Torvalds .destroy_inode = ufs_destroy_inode, 12701da177e4SLinus Torvalds .read_inode = ufs_read_inode, 12711da177e4SLinus Torvalds .write_inode = ufs_write_inode, 12721da177e4SLinus Torvalds .delete_inode = ufs_delete_inode, 12731da177e4SLinus Torvalds .put_super = ufs_put_super, 12741da177e4SLinus Torvalds .write_super = ufs_write_super, 12751da177e4SLinus Torvalds .statfs = ufs_statfs, 12761da177e4SLinus Torvalds .remount_fs = ufs_remount, 12771da177e4SLinus Torvalds #ifdef CONFIG_QUOTA 12781da177e4SLinus Torvalds .quota_read = ufs_quota_read, 12791da177e4SLinus Torvalds .quota_write = ufs_quota_write, 12801da177e4SLinus Torvalds #endif 12811da177e4SLinus Torvalds }; 12821da177e4SLinus Torvalds 12831da177e4SLinus Torvalds #ifdef CONFIG_QUOTA 12841da177e4SLinus Torvalds 12851da177e4SLinus Torvalds /* Read data from quotafile - avoid pagecache and such because we cannot afford 12861da177e4SLinus Torvalds * acquiring the locks... As quota files are never truncated and quota code 12871da177e4SLinus Torvalds * itself serializes the operations (and noone else should touch the files) 12881da177e4SLinus Torvalds * we don't have to be afraid of races */ 12891da177e4SLinus Torvalds static ssize_t ufs_quota_read(struct super_block *sb, int type, char *data, 12901da177e4SLinus Torvalds size_t len, loff_t off) 12911da177e4SLinus Torvalds { 12921da177e4SLinus Torvalds struct inode *inode = sb_dqopt(sb)->files[type]; 12931da177e4SLinus Torvalds sector_t blk = off >> sb->s_blocksize_bits; 12941da177e4SLinus Torvalds int err = 0; 12951da177e4SLinus Torvalds int offset = off & (sb->s_blocksize - 1); 12961da177e4SLinus Torvalds int tocopy; 12971da177e4SLinus Torvalds size_t toread; 12981da177e4SLinus Torvalds struct buffer_head *bh; 12991da177e4SLinus Torvalds loff_t i_size = i_size_read(inode); 13001da177e4SLinus Torvalds 13011da177e4SLinus Torvalds if (off > i_size) 13021da177e4SLinus Torvalds return 0; 13031da177e4SLinus Torvalds if (off+len > i_size) 13041da177e4SLinus Torvalds len = i_size-off; 13051da177e4SLinus Torvalds toread = len; 13061da177e4SLinus Torvalds while (toread > 0) { 13071da177e4SLinus Torvalds tocopy = sb->s_blocksize - offset < toread ? 13081da177e4SLinus Torvalds sb->s_blocksize - offset : toread; 13091da177e4SLinus Torvalds 13101da177e4SLinus Torvalds bh = ufs_bread(inode, blk, 0, &err); 13111da177e4SLinus Torvalds if (err) 13121da177e4SLinus Torvalds return err; 13131da177e4SLinus Torvalds if (!bh) /* A hole? */ 13141da177e4SLinus Torvalds memset(data, 0, tocopy); 13151da177e4SLinus Torvalds else { 13161da177e4SLinus Torvalds memcpy(data, bh->b_data+offset, tocopy); 13171da177e4SLinus Torvalds brelse(bh); 13181da177e4SLinus Torvalds } 13191da177e4SLinus Torvalds offset = 0; 13201da177e4SLinus Torvalds toread -= tocopy; 13211da177e4SLinus Torvalds data += tocopy; 13221da177e4SLinus Torvalds blk++; 13231da177e4SLinus Torvalds } 13241da177e4SLinus Torvalds return len; 13251da177e4SLinus Torvalds } 13261da177e4SLinus Torvalds 13271da177e4SLinus Torvalds /* Write to quotafile */ 13281da177e4SLinus Torvalds static ssize_t ufs_quota_write(struct super_block *sb, int type, 13291da177e4SLinus Torvalds const char *data, size_t len, loff_t off) 13301da177e4SLinus Torvalds { 13311da177e4SLinus Torvalds struct inode *inode = sb_dqopt(sb)->files[type]; 13321da177e4SLinus Torvalds sector_t blk = off >> sb->s_blocksize_bits; 13331da177e4SLinus Torvalds int err = 0; 13341da177e4SLinus Torvalds int offset = off & (sb->s_blocksize - 1); 13351da177e4SLinus Torvalds int tocopy; 13361da177e4SLinus Torvalds size_t towrite = len; 13371da177e4SLinus Torvalds struct buffer_head *bh; 13381da177e4SLinus Torvalds 13395c81a419SArjan van de Ven mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA); 13401da177e4SLinus Torvalds while (towrite > 0) { 13411da177e4SLinus Torvalds tocopy = sb->s_blocksize - offset < towrite ? 13421da177e4SLinus Torvalds sb->s_blocksize - offset : towrite; 13431da177e4SLinus Torvalds 13441da177e4SLinus Torvalds bh = ufs_bread(inode, blk, 1, &err); 13451da177e4SLinus Torvalds if (!bh) 13461da177e4SLinus Torvalds goto out; 13471da177e4SLinus Torvalds lock_buffer(bh); 13481da177e4SLinus Torvalds memcpy(bh->b_data+offset, data, tocopy); 13491da177e4SLinus Torvalds flush_dcache_page(bh->b_page); 13501da177e4SLinus Torvalds set_buffer_uptodate(bh); 13511da177e4SLinus Torvalds mark_buffer_dirty(bh); 13521da177e4SLinus Torvalds unlock_buffer(bh); 13531da177e4SLinus Torvalds brelse(bh); 13541da177e4SLinus Torvalds offset = 0; 13551da177e4SLinus Torvalds towrite -= tocopy; 13561da177e4SLinus Torvalds data += tocopy; 13571da177e4SLinus Torvalds blk++; 13581da177e4SLinus Torvalds } 13591da177e4SLinus Torvalds out: 136015b2fe39SEvgeniy Polyakov if (len == towrite) { 13611b1dcc1bSJes Sorensen mutex_unlock(&inode->i_mutex); 13621da177e4SLinus Torvalds return err; 136315b2fe39SEvgeniy Polyakov } 13641da177e4SLinus Torvalds if (inode->i_size < off+len-towrite) 13651da177e4SLinus Torvalds i_size_write(inode, off+len-towrite); 13661da177e4SLinus Torvalds inode->i_version++; 13671da177e4SLinus Torvalds inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC; 13681da177e4SLinus Torvalds mark_inode_dirty(inode); 13691b1dcc1bSJes Sorensen mutex_unlock(&inode->i_mutex); 13701da177e4SLinus Torvalds return len - towrite; 13711da177e4SLinus Torvalds } 13721da177e4SLinus Torvalds 13731da177e4SLinus Torvalds #endif 13741da177e4SLinus Torvalds 1375454e2398SDavid Howells static int ufs_get_sb(struct file_system_type *fs_type, 1376454e2398SDavid Howells int flags, const char *dev_name, void *data, struct vfsmount *mnt) 13771da177e4SLinus Torvalds { 1378454e2398SDavid Howells return get_sb_bdev(fs_type, flags, dev_name, data, ufs_fill_super, mnt); 13791da177e4SLinus Torvalds } 13801da177e4SLinus Torvalds 13811da177e4SLinus Torvalds static struct file_system_type ufs_fs_type = { 13821da177e4SLinus Torvalds .owner = THIS_MODULE, 13831da177e4SLinus Torvalds .name = "ufs", 13841da177e4SLinus Torvalds .get_sb = ufs_get_sb, 13851da177e4SLinus Torvalds .kill_sb = kill_block_super, 13861da177e4SLinus Torvalds .fs_flags = FS_REQUIRES_DEV, 13871da177e4SLinus Torvalds }; 13881da177e4SLinus Torvalds 13891da177e4SLinus Torvalds static int __init init_ufs_fs(void) 13901da177e4SLinus Torvalds { 13911da177e4SLinus Torvalds int err = init_inodecache(); 13921da177e4SLinus Torvalds if (err) 13931da177e4SLinus Torvalds goto out1; 13941da177e4SLinus Torvalds err = register_filesystem(&ufs_fs_type); 13951da177e4SLinus Torvalds if (err) 13961da177e4SLinus Torvalds goto out; 13971da177e4SLinus Torvalds return 0; 13981da177e4SLinus Torvalds out: 13991da177e4SLinus Torvalds destroy_inodecache(); 14001da177e4SLinus Torvalds out1: 14011da177e4SLinus Torvalds return err; 14021da177e4SLinus Torvalds } 14031da177e4SLinus Torvalds 14041da177e4SLinus Torvalds static void __exit exit_ufs_fs(void) 14051da177e4SLinus Torvalds { 14061da177e4SLinus Torvalds unregister_filesystem(&ufs_fs_type); 14071da177e4SLinus Torvalds destroy_inodecache(); 14081da177e4SLinus Torvalds } 14091da177e4SLinus Torvalds 14101da177e4SLinus Torvalds module_init(init_ufs_fs) 14111da177e4SLinus Torvalds module_exit(exit_ufs_fs) 14121da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 1413