static int ufs_sync_fs(struct super_block *sb, int wait) { struct ufs_sb_private_info * uspi; struct ufs_super_block_first * usb1; struct ufs_super_block_third * usb3; unsigned flags; mutex_lock(&UFS_SB(sb)->s_lock); UFSD("ENTER\n"); flags = UFS_SB(sb)->s_flags; uspi = UFS_SB(sb)->s_uspi; usb1 = ubh_get_usb_first(uspi); usb3 = ubh_get_usb_third(uspi); usb1->fs_time = cpu_to_fs32(sb, get_seconds()); if ((flags & UFS_ST_MASK) == UFS_ST_SUN || (flags & UFS_ST_MASK) == UFS_ST_SUNOS || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) ufs_set_fs_state(sb, usb1, usb3, UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); ufs_put_cstotal(sb); UFSD("EXIT\n"); mutex_unlock(&UFS_SB(sb)->s_lock); return 0; }
/* * Different types of UFS hold fs_cstotal in different * places, and use different data structure for it. * To make things simpler we just copy fs_cstotal to ufs_sb_private_info */ static void ufs_setup_cstotal(struct super_block *sb) { struct ufs_sb_info *sbi = UFS_SB(sb); struct ufs_sb_private_info *uspi = sbi->s_uspi; struct ufs_super_block_first *usb1; struct ufs_super_block_second *usb2; struct ufs_super_block_third *usb3; unsigned mtype = sbi->s_mount_opt & UFS_MOUNT_UFSTYPE; UFSD("ENTER, mtype=%u\n", mtype); usb1 = ubh_get_usb_first(uspi); usb2 = ubh_get_usb_second(uspi); usb3 = ubh_get_usb_third(uspi); if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && (usb1->fs_flags & UFS_FLAGS_UPDATED)) || mtype == UFS_MOUNT_UFSTYPE_UFS2) { /*we have statistic in different place, then usual*/ uspi->cs_total.cs_ndir = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_ndir); uspi->cs_total.cs_nbfree = fs64_to_cpu(sb, usb2->fs_un.fs_u2.cs_nbfree); uspi->cs_total.cs_nifree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nifree); uspi->cs_total.cs_nffree = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.cs_nffree); } else { uspi->cs_total.cs_ndir = fs32_to_cpu(sb, usb1->fs_cstotal.cs_ndir); uspi->cs_total.cs_nbfree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nbfree); uspi->cs_total.cs_nifree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nifree); uspi->cs_total.cs_nffree = fs32_to_cpu(sb, usb1->fs_cstotal.cs_nffree); } UFSD("EXIT\n"); }
static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf) { struct super_block *sb = dentry->d_sb; struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi; unsigned flags = UFS_SB(sb)->s_flags; struct ufs_super_block_first *usb1; struct ufs_super_block_second *usb2; struct ufs_super_block_third *usb3; lock_kernel(); usb1 = ubh_get_usb_first(uspi); usb2 = ubh_get_usb_second(uspi); usb3 = ubh_get_usb_third(uspi); if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { buf->f_type = UFS2_MAGIC; buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); } else { buf->f_type = UFS_MAGIC; buf->f_blocks = uspi->s_dsize; } buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) + uspi->cs_total.cs_nffree; buf->f_ffree = uspi->cs_total.cs_nifree; buf->f_bsize = sb->s_blocksize; buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree)) ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0; buf->f_files = uspi->s_ncg * uspi->s_ipg; buf->f_namelen = UFS_MAXNAMLEN; unlock_kernel(); return 0; }
static int ufs_statfs(struct dentry *dentry, struct kstatfs *buf) { struct super_block *sb = dentry->d_sb; struct ufs_sb_private_info *uspi= UFS_SB(sb)->s_uspi; unsigned flags = UFS_SB(sb)->s_flags; struct ufs_super_block_third *usb3; u64 id = huge_encode_dev(sb->s_bdev->bd_dev); mutex_lock(&UFS_SB(sb)->s_lock); usb3 = ubh_get_usb_third(uspi); if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { buf->f_type = UFS2_MAGIC; buf->f_blocks = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); } else { buf->f_type = UFS_MAGIC; buf->f_blocks = uspi->s_dsize; } buf->f_bfree = ufs_blkstofrags(uspi->cs_total.cs_nbfree) + uspi->cs_total.cs_nffree; buf->f_ffree = uspi->cs_total.cs_nifree; buf->f_bsize = sb->s_blocksize; buf->f_bavail = (buf->f_bfree > (((long)buf->f_blocks / 100) * uspi->s_minfree)) ? (buf->f_bfree - (((long)buf->f_blocks / 100) * uspi->s_minfree)) : 0; buf->f_files = uspi->s_ncg * uspi->s_ipg; buf->f_namelen = UFS_MAXNAMLEN; buf->f_fsid.val[0] = (u32)id; buf->f_fsid.val[1] = (u32)(id >> 32); mutex_unlock(&UFS_SB(sb)->s_lock); return 0; }
static void ufs_write_super(struct super_block *sb) { struct ufs_sb_private_info * uspi; struct ufs_super_block_first * usb1; struct ufs_super_block_third * usb3; unsigned flags; lock_kernel(); UFSD("ENTER\n"); flags = UFS_SB(sb)->s_flags; uspi = UFS_SB(sb)->s_uspi; usb1 = ubh_get_usb_first(uspi); usb3 = ubh_get_usb_third(uspi); if (!(sb->s_flags & MS_RDONLY)) { usb1->fs_time = cpu_to_fs32(sb, get_seconds()); if ((flags & UFS_ST_MASK) == UFS_ST_SUN || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) ufs_set_fs_state(sb, usb1, usb3, UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); ufs_put_cstotal(sb); } sb->s_dirt = 0; UFSD("EXIT\n"); unlock_kernel(); }
/* * Sync our internal copy of fs_cstotal with disk */ static void ufs_put_cstotal(struct super_block *sb) { unsigned mtype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi; struct ufs_super_block_first *usb1; struct ufs_super_block_second *usb2; struct ufs_super_block_third *usb3; UFSD("ENTER\n"); usb1 = ubh_get_usb_first(uspi); usb2 = ubh_get_usb_second(uspi); usb3 = ubh_get_usb_third(uspi); if ((mtype == UFS_MOUNT_UFSTYPE_44BSD && (usb1->fs_flags & UFS_FLAGS_UPDATED)) || mtype == UFS_MOUNT_UFSTYPE_UFS2) { /*we have statistic in different place, then usual*/ usb2->fs_un.fs_u2.cs_ndir = cpu_to_fs64(sb, uspi->cs_total.cs_ndir); usb2->fs_un.fs_u2.cs_nbfree = cpu_to_fs64(sb, uspi->cs_total.cs_nbfree); usb3->fs_un1.fs_u2.cs_nifree = cpu_to_fs64(sb, uspi->cs_total.cs_nifree); usb3->fs_un1.fs_u2.cs_nffree = cpu_to_fs64(sb, uspi->cs_total.cs_nffree); } else { usb1->fs_cstotal.cs_ndir = cpu_to_fs32(sb, uspi->cs_total.cs_ndir); usb1->fs_cstotal.cs_nbfree = cpu_to_fs32(sb, uspi->cs_total.cs_nbfree); usb1->fs_cstotal.cs_nifree = cpu_to_fs32(sb, uspi->cs_total.cs_nifree); usb1->fs_cstotal.cs_nffree = cpu_to_fs32(sb, uspi->cs_total.cs_nffree); } ubh_mark_buffer_dirty(USPI_UBH(uspi)); ufs_print_super_stuff(sb, usb1, usb2, usb3); UFSD("EXIT\n"); }
static int ufs_fill_super(struct super_block *sb, void *data, int silent) { struct ufs_sb_info * sbi; struct ufs_sb_private_info * uspi; struct ufs_super_block_first * usb1; struct ufs_super_block_second * usb2; struct ufs_super_block_third * usb3; struct ufs_buffer_head * ubh; struct inode *inode; unsigned block_size, super_block_size; unsigned flags; unsigned super_block_offset; unsigned maxsymlen; int ret = -EINVAL; uspi = NULL; ubh = NULL; flags = 0; UFSD("ENTER\n"); #ifndef CONFIG_UFS_FS_WRITE if (!(sb->s_flags & MS_RDONLY)) { pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n"); return -EROFS; } #endif sbi = kzalloc(sizeof(struct ufs_sb_info), GFP_KERNEL); if (!sbi) goto failed_nomem; sb->s_fs_info = sbi; sbi->sb = sb; UFSD("flag %u\n", (int)(sb->s_flags & MS_RDONLY)); mutex_init(&sbi->s_lock); spin_lock_init(&sbi->work_lock); INIT_DELAYED_WORK(&sbi->sync_work, delayed_sync_fs); /* * Set default mount options * Parse mount options */ sbi->s_mount_opt = 0; ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK); if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) { pr_err("wrong mount options\n"); goto failed; } if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) { if (!silent) pr_err("You didn't specify the type of your ufs filesystem\n\n" "mount -t ufs -o ufstype=" "sun|sunx86|44bsd|ufs2|5xbsd|old|hp|nextstep|nextstep-cd|openstep ...\n\n" ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, " "default is ufstype=old\n"); ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD); } uspi = kzalloc(sizeof(struct ufs_sb_private_info), GFP_KERNEL); sbi->s_uspi = uspi; if (!uspi) goto failed; uspi->s_dirblksize = UFS_SECTOR_SIZE; super_block_offset=UFS_SBLOCK; /* Keep 2Gig file limit. Some UFS variants need to override this but as I don't know which I'll let those in the know loosen the rules */ switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) { case UFS_MOUNT_UFSTYPE_44BSD: UFSD("ufstype=44bsd\n"); uspi->s_fsize = block_size = 512; uspi->s_fmask = ~(512 - 1); uspi->s_fshift = 9; uspi->s_sbsize = super_block_size = 1536; uspi->s_sbbase = 0; flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; break; case UFS_MOUNT_UFSTYPE_UFS2: UFSD("ufstype=ufs2\n"); super_block_offset=SBLOCK_UFS2; uspi->s_fsize = block_size = 512; uspi->s_fmask = ~(512 - 1); uspi->s_fshift = 9; uspi->s_sbsize = super_block_size = 1536; uspi->s_sbbase = 0; flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; break; case UFS_MOUNT_UFSTYPE_SUN: UFSD("ufstype=sun\n"); uspi->s_fsize = block_size = 1024; uspi->s_fmask = ~(1024 - 1); uspi->s_fshift = 10; uspi->s_sbsize = super_block_size = 2048; uspi->s_sbbase = 0; uspi->s_maxsymlinklen = 0; /* Not supported on disk */ flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN; break; case UFS_MOUNT_UFSTYPE_SUNOS: UFSD("ufstype=sunos\n"); uspi->s_fsize = block_size = 1024; uspi->s_fmask = ~(1024 - 1); uspi->s_fshift = 10; uspi->s_sbsize = 2048; super_block_size = 2048; uspi->s_sbbase = 0; uspi->s_maxsymlinklen = 0; /* Not supported on disk */ flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_SUNOS | UFS_CG_SUN; break; case UFS_MOUNT_UFSTYPE_SUNx86: UFSD("ufstype=sunx86\n"); uspi->s_fsize = block_size = 1024; uspi->s_fmask = ~(1024 - 1); uspi->s_fshift = 10; uspi->s_sbsize = super_block_size = 2048; uspi->s_sbbase = 0; uspi->s_maxsymlinklen = 0; /* Not supported on disk */ flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN; break; case UFS_MOUNT_UFSTYPE_OLD: UFSD("ufstype=old\n"); uspi->s_fsize = block_size = 1024; uspi->s_fmask = ~(1024 - 1); uspi->s_fshift = 10; uspi->s_sbsize = super_block_size = 2048; uspi->s_sbbase = 0; flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; if (!(sb->s_flags & MS_RDONLY)) { if (!silent) pr_info("ufstype=old is supported read-only\n"); sb->s_flags |= MS_RDONLY; } break; case UFS_MOUNT_UFSTYPE_NEXTSTEP: UFSD("ufstype=nextstep\n"); uspi->s_fsize = block_size = 1024; uspi->s_fmask = ~(1024 - 1); uspi->s_fshift = 10; uspi->s_sbsize = super_block_size = 2048; uspi->s_sbbase = 0; uspi->s_dirblksize = 1024; flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; if (!(sb->s_flags & MS_RDONLY)) { if (!silent) pr_info("ufstype=nextstep is supported read-only\n"); sb->s_flags |= MS_RDONLY; } break; case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD: UFSD("ufstype=nextstep-cd\n"); uspi->s_fsize = block_size = 2048; uspi->s_fmask = ~(2048 - 1); uspi->s_fshift = 11; uspi->s_sbsize = super_block_size = 2048; uspi->s_sbbase = 0; uspi->s_dirblksize = 1024; flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; if (!(sb->s_flags & MS_RDONLY)) { if (!silent) pr_info("ufstype=nextstep-cd is supported read-only\n"); sb->s_flags |= MS_RDONLY; } break; case UFS_MOUNT_UFSTYPE_OPENSTEP: UFSD("ufstype=openstep\n"); uspi->s_fsize = block_size = 1024; uspi->s_fmask = ~(1024 - 1); uspi->s_fshift = 10; uspi->s_sbsize = super_block_size = 2048; uspi->s_sbbase = 0; uspi->s_dirblksize = 1024; flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; if (!(sb->s_flags & MS_RDONLY)) { if (!silent) pr_info("ufstype=openstep is supported read-only\n"); sb->s_flags |= MS_RDONLY; } break; case UFS_MOUNT_UFSTYPE_HP: UFSD("ufstype=hp\n"); uspi->s_fsize = block_size = 1024; uspi->s_fmask = ~(1024 - 1); uspi->s_fshift = 10; uspi->s_sbsize = super_block_size = 2048; uspi->s_sbbase = 0; flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; if (!(sb->s_flags & MS_RDONLY)) { if (!silent) pr_info("ufstype=hp is supported read-only\n"); sb->s_flags |= MS_RDONLY; } break; default: if (!silent) pr_err("unknown ufstype\n"); goto failed; } again: if (!sb_set_blocksize(sb, block_size)) { pr_err("failed to set blocksize\n"); goto failed; } /* * read ufs super block from device */ ubh = ubh_bread_uspi(uspi, sb, uspi->s_sbbase + super_block_offset/block_size, super_block_size); if (!ubh) goto failed; usb1 = ubh_get_usb_first(uspi); usb2 = ubh_get_usb_second(uspi); usb3 = ubh_get_usb_third(uspi); /* Sort out mod used on SunOS 4.1.3 for fs_state */ uspi->s_postblformat = fs32_to_cpu(sb, usb3->fs_postblformat); if (((flags & UFS_ST_MASK) == UFS_ST_SUNOS) && (uspi->s_postblformat != UFS_42POSTBLFMT)) { flags &= ~UFS_ST_MASK; flags |= UFS_ST_SUN; } /* * Check ufs magic number */ sbi->s_bytesex = BYTESEX_LE; switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { case UFS_MAGIC: case UFS_MAGIC_BW: case UFS2_MAGIC: case UFS_MAGIC_LFN: case UFS_MAGIC_FEA: case UFS_MAGIC_4GB: goto magic_found; } sbi->s_bytesex = BYTESEX_BE; switch ((uspi->fs_magic = fs32_to_cpu(sb, usb3->fs_magic))) { case UFS_MAGIC: case UFS_MAGIC_BW: case UFS2_MAGIC: case UFS_MAGIC_LFN: case UFS_MAGIC_FEA: case UFS_MAGIC_4GB: goto magic_found; } if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP) || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD) || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP)) && uspi->s_sbbase < 256) { ubh_brelse_uspi(uspi); ubh = NULL; uspi->s_sbbase += 8; goto again; } if (!silent) pr_err("%s(): bad magic number\n", __func__); goto failed; magic_found: /* * Check block and fragment sizes */ uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize); uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize); uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize); uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); if (!is_power_of_2(uspi->s_fsize)) { pr_err("%s(): fragment size %u is not a power of 2\n", __func__, uspi->s_fsize); goto failed; } if (uspi->s_fsize < 512) { pr_err("%s(): fragment size %u is too small\n", __func__, uspi->s_fsize); goto failed; } if (uspi->s_fsize > 4096) { pr_err("%s(): fragment size %u is too large\n", __func__, uspi->s_fsize); goto failed; } if (!is_power_of_2(uspi->s_bsize)) { pr_err("%s(): block size %u is not a power of 2\n", __func__, uspi->s_bsize); goto failed; } if (uspi->s_bsize < 4096) { pr_err("%s(): block size %u is too small\n", __func__, uspi->s_bsize); goto failed; } if (uspi->s_bsize / uspi->s_fsize > 8) { pr_err("%s(): too many fragments per block (%u)\n", __func__, uspi->s_bsize / uspi->s_fsize); goto failed; } if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) { ubh_brelse_uspi(uspi); ubh = NULL; block_size = uspi->s_fsize; super_block_size = uspi->s_sbsize; UFSD("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size); goto again; } sbi->s_flags = flags;/*after that line some functions use s_flags*/ ufs_print_super_stuff(sb, usb1, usb2, usb3); /* * Check, if file system was correctly unmounted. * If not, make it read only. */ if (((flags & UFS_ST_MASK) == UFS_ST_44BSD) || ((flags & UFS_ST_MASK) == UFS_ST_OLD) || (((flags & UFS_ST_MASK) == UFS_ST_SUN || (flags & UFS_ST_MASK) == UFS_ST_SUNOS || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) && (ufs_get_fs_state(sb, usb1, usb3) == (UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time))))) { switch(usb1->fs_clean) { case UFS_FSCLEAN: UFSD("fs is clean\n"); break; case UFS_FSSTABLE: UFSD("fs is stable\n"); break; case UFS_FSLOG: UFSD("fs is logging fs\n"); break; case UFS_FSOSF1: UFSD("fs is DEC OSF/1\n"); break; case UFS_FSACTIVE: pr_err("%s(): fs is active\n", __func__); sb->s_flags |= MS_RDONLY; break; case UFS_FSBAD: pr_err("%s(): fs is bad\n", __func__); sb->s_flags |= MS_RDONLY; break; default: pr_err("%s(): can't grok fs_clean 0x%x\n", __func__, usb1->fs_clean); sb->s_flags |= MS_RDONLY; break; } } else { pr_err("%s(): fs needs fsck\n", __func__); sb->s_flags |= MS_RDONLY; } /* * Read ufs_super_block into internal data structures */ sb->s_op = &ufs_super_ops; sb->s_export_op = &ufs_export_ops; sb->s_magic = fs32_to_cpu(sb, usb3->fs_magic); uspi->s_sblkno = fs32_to_cpu(sb, usb1->fs_sblkno); uspi->s_cblkno = fs32_to_cpu(sb, usb1->fs_cblkno); uspi->s_iblkno = fs32_to_cpu(sb, usb1->fs_iblkno); uspi->s_dblkno = fs32_to_cpu(sb, usb1->fs_dblkno); uspi->s_cgoffset = fs32_to_cpu(sb, usb1->fs_cgoffset); uspi->s_cgmask = fs32_to_cpu(sb, usb1->fs_cgmask); if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) { uspi->s_u2_size = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_size); uspi->s_u2_dsize = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_dsize); } else { uspi->s_size = fs32_to_cpu(sb, usb1->fs_size); uspi->s_dsize = fs32_to_cpu(sb, usb1->fs_dsize); } uspi->s_ncg = fs32_to_cpu(sb, usb1->fs_ncg); /* s_bsize already set */ /* s_fsize already set */ uspi->s_fpb = fs32_to_cpu(sb, usb1->fs_frag); uspi->s_minfree = fs32_to_cpu(sb, usb1->fs_minfree); uspi->s_bmask = fs32_to_cpu(sb, usb1->fs_bmask); uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); uspi->s_bshift = fs32_to_cpu(sb, usb1->fs_bshift); uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); UFSD("uspi->s_bshift = %d,uspi->s_fshift = %d", uspi->s_bshift, uspi->s_fshift); uspi->s_fpbshift = fs32_to_cpu(sb, usb1->fs_fragshift); uspi->s_fsbtodb = fs32_to_cpu(sb, usb1->fs_fsbtodb); /* s_sbsize already set */ uspi->s_csmask = fs32_to_cpu(sb, usb1->fs_csmask); uspi->s_csshift = fs32_to_cpu(sb, usb1->fs_csshift); uspi->s_nindir = fs32_to_cpu(sb, usb1->fs_nindir); uspi->s_inopb = fs32_to_cpu(sb, usb1->fs_inopb); uspi->s_nspf = fs32_to_cpu(sb, usb1->fs_nspf); uspi->s_npsect = ufs_get_fs_npsect(sb, usb1, usb3); uspi->s_interleave = fs32_to_cpu(sb, usb1->fs_interleave); uspi->s_trackskew = fs32_to_cpu(sb, usb1->fs_trackskew); if (uspi->fs_magic == UFS2_MAGIC) uspi->s_csaddr = fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr); else uspi->s_csaddr = fs32_to_cpu(sb, usb1->fs_csaddr); uspi->s_cssize = fs32_to_cpu(sb, usb1->fs_cssize); uspi->s_cgsize = fs32_to_cpu(sb, usb1->fs_cgsize); uspi->s_ntrak = fs32_to_cpu(sb, usb1->fs_ntrak); uspi->s_nsect = fs32_to_cpu(sb, usb1->fs_nsect); uspi->s_spc = fs32_to_cpu(sb, usb1->fs_spc); uspi->s_ipg = fs32_to_cpu(sb, usb1->fs_ipg); uspi->s_fpg = fs32_to_cpu(sb, usb1->fs_fpg); uspi->s_cpc = fs32_to_cpu(sb, usb2->fs_un.fs_u1.fs_cpc); uspi->s_contigsumsize = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_contigsumsize); uspi->s_qbmask = ufs_get_fs_qbmask(sb, usb3); uspi->s_qfmask = ufs_get_fs_qfmask(sb, usb3); uspi->s_nrpos = fs32_to_cpu(sb, usb3->fs_nrpos); uspi->s_postbloff = fs32_to_cpu(sb, usb3->fs_postbloff); uspi->s_rotbloff = fs32_to_cpu(sb, usb3->fs_rotbloff); /* * Compute another frequently used values */ uspi->s_fpbmask = uspi->s_fpb - 1; if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) uspi->s_apbshift = uspi->s_bshift - 3; else uspi->s_apbshift = uspi->s_bshift - 2; uspi->s_2apbshift = uspi->s_apbshift * 2; uspi->s_3apbshift = uspi->s_apbshift * 3; uspi->s_apb = 1 << uspi->s_apbshift; uspi->s_2apb = 1 << uspi->s_2apbshift; uspi->s_3apb = 1 << uspi->s_3apbshift; uspi->s_apbmask = uspi->s_apb - 1; uspi->s_nspfshift = uspi->s_fshift - UFS_SECTOR_BITS; uspi->s_nspb = uspi->s_nspf << uspi->s_fpbshift; uspi->s_inopf = uspi->s_inopb >> uspi->s_fpbshift; uspi->s_bpf = uspi->s_fsize << 3; uspi->s_bpfshift = uspi->s_fshift + 3; uspi->s_bpfmask = uspi->s_bpf - 1; if ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_44BSD || (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_UFS2) uspi->s_maxsymlinklen = fs32_to_cpu(sb, usb3->fs_un2.fs_44.fs_maxsymlinklen); if (uspi->fs_magic == UFS2_MAGIC) maxsymlen = 2 * 4 * (UFS_NDADDR + UFS_NINDIR); else maxsymlen = 4 * (UFS_NDADDR + UFS_NINDIR); if (uspi->s_maxsymlinklen > maxsymlen) { ufs_warning(sb, __func__, "ufs_read_super: excessive maximum " "fast symlink size (%u)\n", uspi->s_maxsymlinklen); uspi->s_maxsymlinklen = maxsymlen; } sb->s_max_links = UFS_LINK_MAX; inode = ufs_iget(sb, UFS_ROOTINO); if (IS_ERR(inode)) { ret = PTR_ERR(inode); goto failed; } sb->s_root = d_make_root(inode); if (!sb->s_root) { ret = -ENOMEM; goto failed; } ufs_setup_cstotal(sb); /* * Read cylinder group structures */ if (!(sb->s_flags & MS_RDONLY)) if (!ufs_read_cylinder_structures(sb)) goto failed; UFSD("EXIT\n"); return 0; failed: if (ubh) ubh_brelse_uspi (uspi); kfree (uspi); kfree(sbi); sb->s_fs_info = NULL; UFSD("EXIT (FAILED)\n"); return ret; failed_nomem: UFSD("EXIT (NOMEM)\n"); return -ENOMEM; }
static int ufs_remount (struct super_block *sb, int *mount_flags, char *data) { struct ufs_sb_private_info * uspi; struct ufs_super_block_first * usb1; struct ufs_super_block_third * usb3; unsigned new_mount_opt, ufstype; unsigned flags; sync_filesystem(sb); mutex_lock(&UFS_SB(sb)->s_lock); uspi = UFS_SB(sb)->s_uspi; flags = UFS_SB(sb)->s_flags; usb1 = ubh_get_usb_first(uspi); usb3 = ubh_get_usb_third(uspi); /* * Allow the "check" option to be passed as a remount option. * It is not possible to change ufstype option during remount */ ufstype = UFS_SB(sb)->s_mount_opt & UFS_MOUNT_UFSTYPE; new_mount_opt = 0; ufs_set_opt (new_mount_opt, ONERROR_LOCK); if (!ufs_parse_options (data, &new_mount_opt)) { mutex_unlock(&UFS_SB(sb)->s_lock); return -EINVAL; } if (!(new_mount_opt & UFS_MOUNT_UFSTYPE)) { new_mount_opt |= ufstype; } else if ((new_mount_opt & UFS_MOUNT_UFSTYPE) != ufstype) { pr_err("ufstype can't be changed during remount\n"); mutex_unlock(&UFS_SB(sb)->s_lock); return -EINVAL; } if ((*mount_flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) { UFS_SB(sb)->s_mount_opt = new_mount_opt; mutex_unlock(&UFS_SB(sb)->s_lock); return 0; } /* * fs was mouted as rw, remounting ro */ if (*mount_flags & MS_RDONLY) { ufs_put_super_internal(sb); usb1->fs_time = cpu_to_fs32(sb, get_seconds()); if ((flags & UFS_ST_MASK) == UFS_ST_SUN || (flags & UFS_ST_MASK) == UFS_ST_SUNOS || (flags & UFS_ST_MASK) == UFS_ST_SUNx86) ufs_set_fs_state(sb, usb1, usb3, UFS_FSOK - fs32_to_cpu(sb, usb1->fs_time)); ubh_mark_buffer_dirty (USPI_UBH(uspi)); sb->s_flags |= MS_RDONLY; } else { /* * fs was mounted as ro, remounting rw */ #ifndef CONFIG_UFS_FS_WRITE pr_err("ufs was compiled with read-only support, can't be mounted as read-write\n"); mutex_unlock(&UFS_SB(sb)->s_lock); return -EINVAL; #else if (ufstype != UFS_MOUNT_UFSTYPE_SUN && ufstype != UFS_MOUNT_UFSTYPE_SUNOS && ufstype != UFS_MOUNT_UFSTYPE_44BSD && ufstype != UFS_MOUNT_UFSTYPE_SUNx86 && ufstype != UFS_MOUNT_UFSTYPE_UFS2) { pr_err("this ufstype is read-only supported\n"); mutex_unlock(&UFS_SB(sb)->s_lock); return -EINVAL; } if (!ufs_read_cylinder_structures(sb)) { pr_err("failed during remounting\n"); mutex_unlock(&UFS_SB(sb)->s_lock); return -EPERM; } sb->s_flags &= ~MS_RDONLY; #endif } UFS_SB(sb)->s_mount_opt = new_mount_opt; mutex_unlock(&UFS_SB(sb)->s_lock); return 0; }
static int ufs_read_cylinder_structures(struct super_block *sb) { struct ufs_sb_info *sbi = UFS_SB(sb); struct ufs_sb_private_info *uspi = sbi->s_uspi; struct ufs_buffer_head * ubh; unsigned char * base, * space; unsigned size, blks, i; struct ufs_super_block_third *usb3; UFSD("ENTER\n"); usb3 = ubh_get_usb_third(uspi); size = uspi->s_cssize; blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; base = space = kmalloc(size, GFP_NOFS); if (!base) goto failed; sbi->s_csp = (struct ufs_csum *)space; for (i = 0; i < blks; i += uspi->s_fpb) { size = uspi->s_bsize; if (i + uspi->s_fpb > blks) size = (blks - i) * uspi->s_fsize; ubh = ubh_bread(sb, uspi->s_csaddr + i, size); if (!ubh) goto failed; ubh_ubhcpymem (space, ubh, size); space += size; ubh_brelse (ubh); ubh = NULL; } if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_NOFS))) goto failed; for (i = 0; i < uspi->s_ncg; i++) sbi->s_ucg[i] = NULL; for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { sbi->s_ucpi[i] = NULL; sbi->s_cgno[i] = UFS_CGNO_EMPTY; } for (i = 0; i < uspi->s_ncg; i++) { UFSD("read cg %u\n", i); if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i)))) goto failed; if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data)) goto failed; ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data); } for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_NOFS))) goto failed; sbi->s_cgno[i] = UFS_CGNO_EMPTY; } sbi->s_cg_loaded = 0; UFSD("EXIT\n"); return 1; failed: kfree (base); if (sbi->s_ucg) { for (i = 0; i < uspi->s_ncg; i++) if (sbi->s_ucg[i]) brelse (sbi->s_ucg[i]); kfree (sbi->s_ucg); for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) kfree (sbi->s_ucpi[i]); } UFSD("EXIT (FAILED)\n"); return 0; }
static int ufs_fill_super(struct super_block *sb, void *data, int silent) { struct ufs_sb_info * sbi; struct ufs_sb_private_info * uspi; struct ufs_super_block_first * usb1; struct ufs_super_block_second * usb2; struct ufs_super_block_third * usb3; struct ufs_buffer_head * ubh; struct inode *inode; unsigned block_size, super_block_size; unsigned flags; uspi = NULL; ubh = NULL; flags = 0; UFSD(("ENTER\n")) sbi = kmalloc(sizeof(struct ufs_sb_info), GFP_KERNEL); if (!sbi) goto failed_nomem; sb->s_fs_info = sbi; memset(sbi, 0, sizeof(struct ufs_sb_info)); UFSD(("flag %u\n", (int)(sb->s_flags & MS_RDONLY))) #ifndef CONFIG_UFS_FS_WRITE if (!(sb->s_flags & MS_RDONLY)) { printk("ufs was compiled with read-only support, " "can't be mounted as read-write\n"); goto failed; } #endif /* * Set default mount options * Parse mount options */ sbi->s_mount_opt = 0; ufs_set_opt (sbi->s_mount_opt, ONERROR_LOCK); if (!ufs_parse_options ((char *) data, &sbi->s_mount_opt)) { printk("wrong mount options\n"); goto failed; } if (!(sbi->s_mount_opt & UFS_MOUNT_UFSTYPE)) { printk("You didn't specify the type of your ufs filesystem\n\n" "mount -t ufs -o ufstype=" "sun|sunx86|44bsd|old|hp|nextstep|netxstep-cd|openstep ...\n\n" ">>>WARNING<<< Wrong ufstype may corrupt your filesystem, " "default is ufstype=old\n"); ufs_set_opt (sbi->s_mount_opt, UFSTYPE_OLD); } sbi->s_uspi = uspi = kmalloc (sizeof(struct ufs_sb_private_info), GFP_KERNEL); if (!uspi) goto failed; /* Keep 2Gig file limit. Some UFS variants need to override this but as I don't know which I'll let those in the know loosen the rules */ switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) { case UFS_MOUNT_UFSTYPE_44BSD: UFSD(("ufstype=44bsd\n")) uspi->s_fsize = block_size = 512; uspi->s_fmask = ~(512 - 1); uspi->s_fshift = 9; uspi->s_sbsize = super_block_size = 1536; uspi->s_sbbase = 0; flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; break; case UFS_MOUNT_UFSTYPE_SUN: UFSD(("ufstype=sun\n")) uspi->s_fsize = block_size = 1024; uspi->s_fmask = ~(1024 - 1); uspi->s_fshift = 10; uspi->s_sbsize = super_block_size = 2048; uspi->s_sbbase = 0; uspi->s_maxsymlinklen = 56; flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUN | UFS_CG_SUN; break; case UFS_MOUNT_UFSTYPE_SUNx86: UFSD(("ufstype=sunx86\n")) uspi->s_fsize = block_size = 1024; uspi->s_fmask = ~(1024 - 1); uspi->s_fshift = 10; uspi->s_sbsize = super_block_size = 2048; uspi->s_sbbase = 0; uspi->s_maxsymlinklen = 56; flags |= UFS_DE_OLD | UFS_UID_EFT | UFS_ST_SUNx86 | UFS_CG_SUN; break; case UFS_MOUNT_UFSTYPE_OLD: UFSD(("ufstype=old\n")) uspi->s_fsize = block_size = 1024; uspi->s_fmask = ~(1024 - 1); uspi->s_fshift = 10; uspi->s_sbsize = super_block_size = 2048; uspi->s_sbbase = 0; flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; if (!(sb->s_flags & MS_RDONLY)) { printk(KERN_INFO "ufstype=old is supported read-only\n"); sb->s_flags |= MS_RDONLY; } break; case UFS_MOUNT_UFSTYPE_NEXTSTEP: UFSD(("ufstype=nextstep\n")) uspi->s_fsize = block_size = 1024; uspi->s_fmask = ~(1024 - 1); uspi->s_fshift = 10; uspi->s_sbsize = super_block_size = 2048; uspi->s_sbbase = 0; flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; if (!(sb->s_flags & MS_RDONLY)) { printk(KERN_INFO "ufstype=nextstep is supported read-only\n"); sb->s_flags |= MS_RDONLY; } break; case UFS_MOUNT_UFSTYPE_NEXTSTEP_CD: UFSD(("ufstype=nextstep-cd\n")) uspi->s_fsize = block_size = 2048; uspi->s_fmask = ~(2048 - 1); uspi->s_fshift = 11; uspi->s_sbsize = super_block_size = 2048; uspi->s_sbbase = 0; flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; if (!(sb->s_flags & MS_RDONLY)) { printk(KERN_INFO "ufstype=nextstep-cd is supported read-only\n"); sb->s_flags |= MS_RDONLY; } break; case UFS_MOUNT_UFSTYPE_OPENSTEP: UFSD(("ufstype=openstep\n")) uspi->s_fsize = block_size = 1024; uspi->s_fmask = ~(1024 - 1); uspi->s_fshift = 10; uspi->s_sbsize = super_block_size = 2048; uspi->s_sbbase = 0; flags |= UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; if (!(sb->s_flags & MS_RDONLY)) { printk(KERN_INFO "ufstype=openstep is supported read-only\n"); sb->s_flags |= MS_RDONLY; } break; case UFS_MOUNT_UFSTYPE_HP: UFSD(("ufstype=hp\n")) uspi->s_fsize = block_size = 1024; uspi->s_fmask = ~(1024 - 1); uspi->s_fshift = 10; uspi->s_sbsize = super_block_size = 2048; uspi->s_sbbase = 0; flags |= UFS_DE_OLD | UFS_UID_OLD | UFS_ST_OLD | UFS_CG_OLD; if (!(sb->s_flags & MS_RDONLY)) { printk(KERN_INFO "ufstype=hp is supported read-only\n"); sb->s_flags |= MS_RDONLY; } break; default: printk("unknown ufstype\n"); goto failed; } again: if (!sb_set_blocksize(sb, block_size)) { printk(KERN_ERR "UFS: failed to set blocksize\n"); goto failed; } /* * read ufs super block from device */ ubh = ubh_bread_uspi (uspi, sb, uspi->s_sbbase + UFS_SBLOCK/block_size, super_block_size); if (!ubh) goto failed; usb1 = ubh_get_usb_first(USPI_UBH); usb2 = ubh_get_usb_second(USPI_UBH); usb3 = ubh_get_usb_third(USPI_UBH); /* * Check ufs magic number */ switch (__constant_le32_to_cpu(usb3->fs_magic)) { case UFS_MAGIC: case UFS_MAGIC_LFN: case UFS_MAGIC_FEA: case UFS_MAGIC_4GB: sbi->s_bytesex = BYTESEX_LE; goto magic_found; } switch (__constant_be32_to_cpu(usb3->fs_magic)) { case UFS_MAGIC: case UFS_MAGIC_LFN: case UFS_MAGIC_FEA: case UFS_MAGIC_4GB: sbi->s_bytesex = BYTESEX_BE; goto magic_found; } if ((((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP) || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_NEXTSTEP_CD) || ((sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) == UFS_MOUNT_UFSTYPE_OPENSTEP)) && uspi->s_sbbase < 256) { ubh_brelse_uspi(uspi); ubh = NULL; uspi->s_sbbase += 8; goto again; } printk("ufs_read_super: bad magic number\n"); goto failed; magic_found: /* * Check block and fragment sizes */ uspi->s_bsize = fs32_to_cpu(sb, usb1->fs_bsize); uspi->s_fsize = fs32_to_cpu(sb, usb1->fs_fsize); uspi->s_sbsize = fs32_to_cpu(sb, usb1->fs_sbsize); uspi->s_fmask = fs32_to_cpu(sb, usb1->fs_fmask); uspi->s_fshift = fs32_to_cpu(sb, usb1->fs_fshift); if (uspi->s_fsize & (uspi->s_fsize - 1)) { printk(KERN_ERR "ufs_read_super: fragment size %u is not a power of 2\n", uspi->s_fsize); goto failed; } if (uspi->s_fsize < 512) { printk(KERN_ERR "ufs_read_super: fragment size %u is too small\n", uspi->s_fsize); goto failed; } if (uspi->s_fsize > 4096) { printk(KERN_ERR "ufs_read_super: fragment size %u is too large\n", uspi->s_fsize); goto failed; } if (uspi->s_bsize & (uspi->s_bsize - 1)) { printk(KERN_ERR "ufs_read_super: block size %u is not a power of 2\n", uspi->s_bsize); goto failed; } if (uspi->s_bsize < 4096) { printk(KERN_ERR "ufs_read_super: block size %u is too small\n", uspi->s_bsize); goto failed; } if (uspi->s_bsize / uspi->s_fsize > 8) { printk(KERN_ERR "ufs_read_super: too many fragments per block (%u)\n", uspi->s_bsize / uspi->s_fsize); goto failed; } if (uspi->s_fsize != block_size || uspi->s_sbsize != super_block_size) { ubh_brelse_uspi(uspi); ubh = NULL; block_size = uspi->s_fsize; super_block_size = uspi->s_sbsize; UFSD(("another value of block_size or super_block_size %u, %u\n", block_size, super_block_size)) goto again; }
/* * Read on-disk structures associated with cylinder groups */ static int ufs_read_cylinder_structures(struct super_block *sb) { struct ufs_sb_info *sbi = UFS_SB(sb); struct ufs_sb_private_info *uspi = sbi->s_uspi; unsigned flags = sbi->s_flags; struct ufs_buffer_head * ubh; unsigned char * base, * space; unsigned size, blks, i; struct ufs_super_block_third *usb3; UFSD("ENTER\n"); usb3 = ubh_get_usb_third(uspi); /* * Read cs structures from (usually) first data block * on the device. */ size = uspi->s_cssize; blks = (size + uspi->s_fsize - 1) >> uspi->s_fshift; base = space = kmalloc(size, GFP_KERNEL); if (!base) goto failed; sbi->s_csp = (struct ufs_csum *)space; for (i = 0; i < blks; i += uspi->s_fpb) { size = uspi->s_bsize; if (i + uspi->s_fpb > blks) size = (blks - i) * uspi->s_fsize; if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) ubh = ubh_bread(sb, fs64_to_cpu(sb, usb3->fs_un1.fs_u2.fs_csaddr) + i, size); else ubh = ubh_bread(sb, uspi->s_csaddr + i, size); if (!ubh) goto failed; ubh_ubhcpymem (space, ubh, size); space += size; ubh_brelse (ubh); ubh = NULL; } /* * Read cylinder group (we read only first fragment from block * at this time) and prepare internal data structures for cg caching. */ if (!(sbi->s_ucg = kmalloc (sizeof(struct buffer_head *) * uspi->s_ncg, GFP_KERNEL))) goto failed; for (i = 0; i < uspi->s_ncg; i++) sbi->s_ucg[i] = NULL; for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { sbi->s_ucpi[i] = NULL; sbi->s_cgno[i] = UFS_CGNO_EMPTY; } for (i = 0; i < uspi->s_ncg; i++) { UFSD("read cg %u\n", i); if (!(sbi->s_ucg[i] = sb_bread(sb, ufs_cgcmin(i)))) goto failed; if (!ufs_cg_chkmagic (sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data)) goto failed; ufs_print_cylinder_stuff(sb, (struct ufs_cylinder_group *) sbi->s_ucg[i]->b_data); } for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) { if (!(sbi->s_ucpi[i] = kmalloc (sizeof(struct ufs_cg_private_info), GFP_KERNEL))) goto failed; sbi->s_cgno[i] = UFS_CGNO_EMPTY; } sbi->s_cg_loaded = 0; UFSD("EXIT\n"); return 1; failed: kfree (base); if (sbi->s_ucg) { for (i = 0; i < uspi->s_ncg; i++) if (sbi->s_ucg[i]) brelse (sbi->s_ucg[i]); kfree (sbi->s_ucg); for (i = 0; i < UFS_MAX_GROUP_LOADED; i++) kfree (sbi->s_ucpi[i]); } UFSD("EXIT (FAILED)\n"); return 0; }