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fs/ntfs/super.c
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/* * super.c - NTFS kernel super block handling. Part of the Linux-NTFS project. * |
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* Copyright (c) 2001-2011 Anton Altaparmakov and Tuxera Inc. |
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* Copyright (c) 2001,2002 Richard Russon * * This program/include file is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as published * by the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program/include file is distributed in the hope that it will be * useful, but WITHOUT ANY WARRANTY; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program (in the main directory of the Linux-NTFS * distribution in the file COPYING); if not, write to the Free Software * Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/stddef.h> #include <linux/init.h> |
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#include <linux/slab.h> |
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#include <linux/string.h> #include <linux/spinlock.h> |
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#include <linux/blkdev.h> /* For bdev_logical_block_size(). */ |
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#include <linux/backing-dev.h> #include <linux/buffer_head.h> #include <linux/vfs.h> #include <linux/moduleparam.h> |
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#include <linux/bitmap.h> |
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#include "sysctl.h" #include "logfile.h" #include "quota.h" |
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#include "usnjrnl.h" |
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#include "dir.h" #include "debug.h" #include "index.h" |
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#include "inode.h" |
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#include "aops.h" |
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#include "layout.h" |
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#include "malloc.h" #include "ntfs.h" |
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/* Number of mounted filesystems which have compression enabled. */ |
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static unsigned long ntfs_nr_compression_users; /* A global default upcase table and a corresponding reference count. */ static ntfschar *default_upcase = NULL; static unsigned long ntfs_nr_upcase_users = 0; /* Error constants/strings used in inode.c::ntfs_show_options(). */ typedef enum { /* One of these must be present, default is ON_ERRORS_CONTINUE. */ ON_ERRORS_PANIC = 0x01, ON_ERRORS_REMOUNT_RO = 0x02, ON_ERRORS_CONTINUE = 0x04, /* Optional, can be combined with any of the above. */ ON_ERRORS_RECOVER = 0x10, } ON_ERRORS_ACTIONS; const option_t on_errors_arr[] = { { ON_ERRORS_PANIC, "panic" }, { ON_ERRORS_REMOUNT_RO, "remount-ro", }, { ON_ERRORS_CONTINUE, "continue", }, { ON_ERRORS_RECOVER, "recover" }, { 0, NULL } }; /** * simple_getbool - * * Copied from old ntfs driver (which copied from vfat driver). */ |
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static int simple_getbool(char *s, bool *setval) |
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{ if (s) { if (!strcmp(s, "1") || !strcmp(s, "yes") || !strcmp(s, "true")) |
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*setval = true; |
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else if (!strcmp(s, "0") || !strcmp(s, "no") || !strcmp(s, "false")) |
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*setval = false; |
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else return 0; } else |
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*setval = true; |
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return 1; } /** * parse_options - parse the (re)mount options * @vol: ntfs volume * @opt: string containing the (re)mount options * * Parse the recognized options in @opt for the ntfs volume described by @vol. */ |
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static bool parse_options(ntfs_volume *vol, char *opt) |
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{ char *p, *v, *ov; static char *utf8 = "utf8"; int errors = 0, sloppy = 0; uid_t uid = (uid_t)-1; gid_t gid = (gid_t)-1; |
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umode_t fmask = (umode_t)-1, dmask = (umode_t)-1; |
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int mft_zone_multiplier = -1, on_errors = -1; |
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int show_sys_files = -1, case_sensitive = -1, disable_sparse = -1; |
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struct nls_table *nls_map = NULL, *old_nls; /* I am lazy... (-8 */ #define NTFS_GETOPT_WITH_DEFAULT(option, variable, default_value) \ if (!strcmp(p, option)) { \ if (!v || !*v) \ variable = default_value; \ else { \ variable = simple_strtoul(ov = v, &v, 0); \ if (*v) \ goto needs_val; \ } \ } #define NTFS_GETOPT(option, variable) \ if (!strcmp(p, option)) { \ if (!v || !*v) \ goto needs_arg; \ variable = simple_strtoul(ov = v, &v, 0); \ if (*v) \ goto needs_val; \ } |
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#define NTFS_GETOPT_OCTAL(option, variable) \ if (!strcmp(p, option)) { \ if (!v || !*v) \ goto needs_arg; \ variable = simple_strtoul(ov = v, &v, 8); \ if (*v) \ goto needs_val; \ } |
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#define NTFS_GETOPT_BOOL(option, variable) \ if (!strcmp(p, option)) { \ |
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bool val; \ |
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if (!simple_getbool(v, &val)) \ goto needs_bool; \ variable = val; \ } #define NTFS_GETOPT_OPTIONS_ARRAY(option, variable, opt_array) \ if (!strcmp(p, option)) { \ int _i; \ if (!v || !*v) \ goto needs_arg; \ ov = v; \ if (variable == -1) \ variable = 0; \ for (_i = 0; opt_array[_i].str && *opt_array[_i].str; _i++) \ if (!strcmp(opt_array[_i].str, v)) { \ variable |= opt_array[_i].val; \ break; \ } \ if (!opt_array[_i].str || !*opt_array[_i].str) \ goto needs_val; \ } if (!opt || !*opt) goto no_mount_options; ntfs_debug("Entering with mount options string: %s", opt); while ((p = strsep(&opt, ","))) { if ((v = strchr(p, '='))) *v++ = 0; NTFS_GETOPT("uid", uid) else NTFS_GETOPT("gid", gid) |
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else NTFS_GETOPT_OCTAL("umask", fmask = dmask) else NTFS_GETOPT_OCTAL("fmask", fmask) else NTFS_GETOPT_OCTAL("dmask", dmask) |
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else NTFS_GETOPT("mft_zone_multiplier", mft_zone_multiplier) |
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else NTFS_GETOPT_WITH_DEFAULT("sloppy", sloppy, true) |
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else NTFS_GETOPT_BOOL("show_sys_files", show_sys_files) else NTFS_GETOPT_BOOL("case_sensitive", case_sensitive) |
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else NTFS_GETOPT_BOOL("disable_sparse", disable_sparse) |
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else NTFS_GETOPT_OPTIONS_ARRAY("errors", on_errors, on_errors_arr) else if (!strcmp(p, "posix") || !strcmp(p, "show_inodes")) ntfs_warning(vol->sb, "Ignoring obsolete option %s.", p); else if (!strcmp(p, "nls") || !strcmp(p, "iocharset")) { if (!strcmp(p, "iocharset")) ntfs_warning(vol->sb, "Option iocharset is " "deprecated. Please use " "option nls=<charsetname> in " "the future."); if (!v || !*v) goto needs_arg; use_utf8: old_nls = nls_map; nls_map = load_nls(v); if (!nls_map) { if (!old_nls) { ntfs_error(vol->sb, "NLS character set " "%s not found.", v); |
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return false; |
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} ntfs_error(vol->sb, "NLS character set %s not " "found. Using previous one %s.", v, old_nls->charset); nls_map = old_nls; } else /* nls_map */ { |
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unload_nls(old_nls); |
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} } else if (!strcmp(p, "utf8")) { |
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bool val = false; |
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ntfs_warning(vol->sb, "Option utf8 is no longer " "supported, using option nls=utf8. Please " "use option nls=utf8 in the future and " "make sure utf8 is compiled either as a " "module or into the kernel."); if (!v || !*v) |
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val = true; |
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else if (!simple_getbool(v, &val)) goto needs_bool; if (val) { v = utf8; goto use_utf8; } } else { ntfs_error(vol->sb, "Unrecognized mount option %s.", p); if (errors < INT_MAX) errors++; } #undef NTFS_GETOPT_OPTIONS_ARRAY #undef NTFS_GETOPT_BOOL #undef NTFS_GETOPT #undef NTFS_GETOPT_WITH_DEFAULT } no_mount_options: if (errors && !sloppy) |
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return false; |
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if (sloppy) ntfs_warning(vol->sb, "Sloppy option given. Ignoring " "unrecognized mount option(s) and continuing."); /* Keep this first! */ if (on_errors != -1) { if (!on_errors) { ntfs_error(vol->sb, "Invalid errors option argument " "or bug in options parser."); |
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return false; |
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} } if (nls_map) { if (vol->nls_map && vol->nls_map != nls_map) { ntfs_error(vol->sb, "Cannot change NLS character set " "on remount."); |
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return false; |
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} /* else (!vol->nls_map) */ ntfs_debug("Using NLS character set %s.", nls_map->charset); vol->nls_map = nls_map; } else /* (!nls_map) */ { if (!vol->nls_map) { vol->nls_map = load_nls_default(); if (!vol->nls_map) { ntfs_error(vol->sb, "Failed to load default " "NLS character set."); |
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return false; |
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} ntfs_debug("Using default NLS character set (%s).", vol->nls_map->charset); } } if (mft_zone_multiplier != -1) { if (vol->mft_zone_multiplier && vol->mft_zone_multiplier != mft_zone_multiplier) { ntfs_error(vol->sb, "Cannot change mft_zone_multiplier " "on remount."); |
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return false; |
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} if (mft_zone_multiplier < 1 || mft_zone_multiplier > 4) { ntfs_error(vol->sb, "Invalid mft_zone_multiplier. " "Using default value, i.e. 1."); mft_zone_multiplier = 1; } vol->mft_zone_multiplier = mft_zone_multiplier; } if (!vol->mft_zone_multiplier) vol->mft_zone_multiplier = 1; if (on_errors != -1) vol->on_errors = on_errors; if (!vol->on_errors || vol->on_errors == ON_ERRORS_RECOVER) vol->on_errors |= ON_ERRORS_CONTINUE; if (uid != (uid_t)-1) vol->uid = uid; if (gid != (gid_t)-1) vol->gid = gid; |
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if (fmask != (umode_t)-1) |
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vol->fmask = fmask; |
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if (dmask != (umode_t)-1) |
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vol->dmask = dmask; if (show_sys_files != -1) { if (show_sys_files) NVolSetShowSystemFiles(vol); else NVolClearShowSystemFiles(vol); } if (case_sensitive != -1) { if (case_sensitive) NVolSetCaseSensitive(vol); else NVolClearCaseSensitive(vol); } |
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if (disable_sparse != -1) { if (disable_sparse) NVolClearSparseEnabled(vol); else { if (!NVolSparseEnabled(vol) && vol->major_ver && vol->major_ver < 3) ntfs_warning(vol->sb, "Not enabling sparse " "support due to NTFS volume " "version %i.%i (need at least " "version 3.0).", vol->major_ver, vol->minor_ver); else NVolSetSparseEnabled(vol); } } |
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return true; |
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needs_arg: ntfs_error(vol->sb, "The %s option requires an argument.", p); |
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return false; |
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needs_bool: ntfs_error(vol->sb, "The %s option requires a boolean argument.", p); |
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return false; |
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needs_val: ntfs_error(vol->sb, "Invalid %s option argument: %s", p, ov); |
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return false; |
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} #ifdef NTFS_RW /** * ntfs_write_volume_flags - write new flags to the volume information flags * @vol: ntfs volume on which to modify the flags * @flags: new flags value for the volume information flags * * Internal function. You probably want to use ntfs_{set,clear}_volume_flags() * instead (see below). * * Replace the volume information flags on the volume @vol with the value * supplied in @flags. Note, this overwrites the volume information flags, so * make sure to combine the flags you want to modify with the old flags and use * the result when calling ntfs_write_volume_flags(). * * Return 0 on success and -errno on error. */ static int ntfs_write_volume_flags(ntfs_volume *vol, const VOLUME_FLAGS flags) { ntfs_inode *ni = NTFS_I(vol->vol_ino); MFT_RECORD *m; VOLUME_INFORMATION *vi; ntfs_attr_search_ctx *ctx; int err; ntfs_debug("Entering, old flags = 0x%x, new flags = 0x%x.", le16_to_cpu(vol->vol_flags), le16_to_cpu(flags)); if (vol->vol_flags == flags) goto done; BUG_ON(!ni); m = map_mft_record(ni); if (IS_ERR(m)) { err = PTR_ERR(m); goto err_out; } ctx = ntfs_attr_get_search_ctx(ni, m); if (!ctx) { err = -ENOMEM; goto put_unm_err_out; } err = ntfs_attr_lookup(AT_VOLUME_INFORMATION, NULL, 0, 0, 0, NULL, 0, ctx); if (err) goto put_unm_err_out; vi = (VOLUME_INFORMATION*)((u8*)ctx->attr + le16_to_cpu(ctx->attr->data.resident.value_offset)); vol->vol_flags = vi->flags = flags; flush_dcache_mft_record_page(ctx->ntfs_ino); mark_mft_record_dirty(ctx->ntfs_ino); ntfs_attr_put_search_ctx(ctx); unmap_mft_record(ni); done: ntfs_debug("Done."); return 0; put_unm_err_out: if (ctx) ntfs_attr_put_search_ctx(ctx); unmap_mft_record(ni); err_out: ntfs_error(vol->sb, "Failed with error code %i.", -err); return err; } /** * ntfs_set_volume_flags - set bits in the volume information flags * @vol: ntfs volume on which to modify the flags * @flags: flags to set on the volume * * Set the bits in @flags in the volume information flags on the volume @vol. * * Return 0 on success and -errno on error. */ static inline int ntfs_set_volume_flags(ntfs_volume *vol, VOLUME_FLAGS flags) { flags &= VOLUME_FLAGS_MASK; return ntfs_write_volume_flags(vol, vol->vol_flags | flags); } /** * ntfs_clear_volume_flags - clear bits in the volume information flags * @vol: ntfs volume on which to modify the flags * @flags: flags to clear on the volume * * Clear the bits in @flags in the volume information flags on the volume @vol. * * Return 0 on success and -errno on error. */ static inline int ntfs_clear_volume_flags(ntfs_volume *vol, VOLUME_FLAGS flags) { flags &= VOLUME_FLAGS_MASK; flags = vol->vol_flags & cpu_to_le16(~le16_to_cpu(flags)); return ntfs_write_volume_flags(vol, flags); } #endif /* NTFS_RW */ /** * ntfs_remount - change the mount options of a mounted ntfs filesystem * @sb: superblock of mounted ntfs filesystem * @flags: remount flags * @opt: remount options string * * Change the mount options of an already mounted ntfs filesystem. * * NOTE: The VFS sets the @sb->s_flags remount flags to @flags after * ntfs_remount() returns successfully (i.e. returns 0). Otherwise, * @sb->s_flags are not changed. */ static int ntfs_remount(struct super_block *sb, int *flags, char *opt) { ntfs_volume *vol = NTFS_SB(sb); ntfs_debug("Entering with remount options string: %s", opt); |
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#ifndef NTFS_RW |
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/* For read-only compiled driver, enforce read-only flag. */ *flags |= MS_RDONLY; |
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#else /* NTFS_RW */ /* * For the read-write compiled driver, if we are remounting read-write, * make sure there are no volume errors and that no unsupported volume * flags are set. Also, empty the logfile journal as it would become * stale as soon as something is written to the volume and mark the * volume dirty so that chkdsk is run if the volume is not umounted * cleanly. Finally, mark the quotas out of date so Windows rescans * the volume on boot and updates them. * * When remounting read-only, mark the volume clean if no volume errors |
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* have occurred. |
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*/ if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) { static const char *es = ". Cannot remount read-write."; /* Remounting read-write. */ if (NVolErrors(vol)) { ntfs_error(sb, "Volume has errors and is read-only%s", es); return -EROFS; } if (vol->vol_flags & VOLUME_IS_DIRTY) { ntfs_error(sb, "Volume is dirty and read-only%s", es); return -EROFS; } |
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if (vol->vol_flags & VOLUME_MODIFIED_BY_CHKDSK) { ntfs_error(sb, "Volume has been modified by chkdsk " "and is read-only%s", es); return -EROFS; } |
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if (vol->vol_flags & VOLUME_MUST_MOUNT_RO_MASK) { |
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ntfs_error(sb, "Volume has unsupported flags set " "(0x%x) and is read-only%s", (unsigned)le16_to_cpu(vol->vol_flags), es); |
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return -EROFS; } if (ntfs_set_volume_flags(vol, VOLUME_IS_DIRTY)) { ntfs_error(sb, "Failed to set dirty bit in volume " "information flags%s", es); return -EROFS; } #if 0 // TODO: Enable this code once we start modifying anything that // is different between NTFS 1.2 and 3.x... /* Set NT4 compatibility flag on newer NTFS version volumes. */ if ((vol->major_ver > 1)) { if (ntfs_set_volume_flags(vol, VOLUME_MOUNTED_ON_NT4)) { ntfs_error(sb, "Failed to set NT4 " "compatibility flag%s", es); NVolSetErrors(vol); return -EROFS; } } #endif if (!ntfs_empty_logfile(vol->logfile_ino)) { ntfs_error(sb, "Failed to empty journal $LogFile%s", es); NVolSetErrors(vol); return -EROFS; } if (!ntfs_mark_quotas_out_of_date(vol)) { ntfs_error(sb, "Failed to mark quotas out of date%s", es); NVolSetErrors(vol); return -EROFS; } |
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if (!ntfs_stamp_usnjrnl(vol)) { ntfs_error(sb, "Failed to stamp transation log " "($UsnJrnl)%s", es); NVolSetErrors(vol); return -EROFS; } |
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} else if (!(sb->s_flags & MS_RDONLY) && (*flags & MS_RDONLY)) { /* Remounting read-only. */ if (!NVolErrors(vol)) { if (ntfs_clear_volume_flags(vol, VOLUME_IS_DIRTY)) ntfs_warning(sb, "Failed to clear dirty bit " "in volume information " "flags. Run chkdsk."); } } #endif /* NTFS_RW */ // TODO: Deal with *flags. |
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if (!parse_options(vol, opt)) |
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return -EINVAL; |
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ntfs_debug("Done."); return 0; } /** * is_boot_sector_ntfs - check whether a boot sector is a valid NTFS boot sector * @sb: Super block of the device to which @b belongs. * @b: Boot sector of device @sb to check. |
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* @silent: If 'true', all output will be silenced. |
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* * is_boot_sector_ntfs() checks whether the boot sector @b is a valid NTFS boot |
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* sector. Returns 'true' if it is valid and 'false' if not. |
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* * @sb is only needed for warning/error output, i.e. it can be NULL when silent |
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* is 'true'. |
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*/ |
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static bool is_boot_sector_ntfs(const struct super_block *sb, const NTFS_BOOT_SECTOR *b, const bool silent) |
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{ /* * Check that checksum == sum of u32 values from b to the checksum |
b0d2374d6 NTFS: Some utilit... |
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* field. If checksum is zero, no checking is done. We will work when * the checksum test fails, since some utilities update the boot sector * ignoring the checksum which leaves the checksum out-of-date. We * report a warning if this is the case. |
1da177e4c Linux-2.6.12-rc2 |
563 |
*/ |
b0d2374d6 NTFS: Some utilit... |
564 |
if ((void*)b < (void*)&b->checksum && b->checksum && !silent) { |
1da177e4c Linux-2.6.12-rc2 |
565 566 567 568 569 570 |
le32 *u; u32 i; for (i = 0, u = (le32*)b; u < (le32*)(&b->checksum); ++u) i += le32_to_cpup(u); if (le32_to_cpu(b->checksum) != i) |
b0d2374d6 NTFS: Some utilit... |
571 |
ntfs_warning(sb, "Invalid boot sector checksum."); |
1da177e4c Linux-2.6.12-rc2 |
572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 |
} /* Check OEMidentifier is "NTFS " */ if (b->oem_id != magicNTFS) goto not_ntfs; /* Check bytes per sector value is between 256 and 4096. */ if (le16_to_cpu(b->bpb.bytes_per_sector) < 0x100 || le16_to_cpu(b->bpb.bytes_per_sector) > 0x1000) goto not_ntfs; /* Check sectors per cluster value is valid. */ switch (b->bpb.sectors_per_cluster) { case 1: case 2: case 4: case 8: case 16: case 32: case 64: case 128: break; default: goto not_ntfs; } |
7fafb8b63 NTFS: Minor clean... |
587 |
/* Check the cluster size is not above the maximum (64kiB). */ |
1da177e4c Linux-2.6.12-rc2 |
588 |
if ((u32)le16_to_cpu(b->bpb.bytes_per_sector) * |
7fafb8b63 NTFS: Minor clean... |
589 |
b->bpb.sectors_per_cluster > NTFS_MAX_CLUSTER_SIZE) |
1da177e4c Linux-2.6.12-rc2 |
590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 |
goto not_ntfs; /* Check reserved/unused fields are really zero. */ if (le16_to_cpu(b->bpb.reserved_sectors) || le16_to_cpu(b->bpb.root_entries) || le16_to_cpu(b->bpb.sectors) || le16_to_cpu(b->bpb.sectors_per_fat) || le32_to_cpu(b->bpb.large_sectors) || b->bpb.fats) goto not_ntfs; /* Check clusters per file mft record value is valid. */ if ((u8)b->clusters_per_mft_record < 0xe1 || (u8)b->clusters_per_mft_record > 0xf7) switch (b->clusters_per_mft_record) { case 1: case 2: case 4: case 8: case 16: case 32: case 64: break; default: goto not_ntfs; } /* Check clusters per index block value is valid. */ if ((u8)b->clusters_per_index_record < 0xe1 || (u8)b->clusters_per_index_record > 0xf7) switch (b->clusters_per_index_record) { case 1: case 2: case 4: case 8: case 16: case 32: case 64: break; default: goto not_ntfs; } /* * Check for valid end of sector marker. We will work without it, but * many BIOSes will refuse to boot from a bootsector if the magic is * incorrect, so we emit a warning. */ |
63cd88542 ntfs: remove priv... |
621 |
if (!silent && b->end_of_sector_marker != cpu_to_le16(0xaa55)) |
1da177e4c Linux-2.6.12-rc2 |
622 |
ntfs_warning(sb, "Invalid end of sector marker."); |
c49c31115 [PATCH] fs/ntfs: ... |
623 |
return true; |
1da177e4c Linux-2.6.12-rc2 |
624 |
not_ntfs: |
c49c31115 [PATCH] fs/ntfs: ... |
625 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 |
} /** * read_ntfs_boot_sector - read the NTFS boot sector of a device * @sb: super block of device to read the boot sector from * @silent: if true, suppress all output * * Reads the boot sector from the device and validates it. If that fails, tries * to read the backup boot sector, first from the end of the device a-la NT4 and * later and then from the middle of the device a-la NT3.51 and before. * * If a valid boot sector is found but it is not the primary boot sector, we * repair the primary boot sector silently (unless the device is read-only or * the primary boot sector is not accessible). * * NOTE: To call this function, @sb must have the fields s_dev, the ntfs super * block (u.ntfs_sb), nr_blocks and the device flags (s_flags) initialized * to their respective values. * * Return the unlocked buffer head containing the boot sector or NULL on error. */ static struct buffer_head *read_ntfs_boot_sector(struct super_block *sb, const int silent) { const char *read_err_str = "Unable to read %s boot sector."; struct buffer_head *bh_primary, *bh_backup; |
78af34f03 NTFS: Implement s... |
652 |
sector_t nr_blocks = NTFS_SB(sb)->nr_blocks; |
1da177e4c Linux-2.6.12-rc2 |
653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 |
/* Try to read primary boot sector. */ if ((bh_primary = sb_bread(sb, 0))) { if (is_boot_sector_ntfs(sb, (NTFS_BOOT_SECTOR*) bh_primary->b_data, silent)) return bh_primary; if (!silent) ntfs_error(sb, "Primary boot sector is invalid."); } else if (!silent) ntfs_error(sb, read_err_str, "primary"); if (!(NTFS_SB(sb)->on_errors & ON_ERRORS_RECOVER)) { if (bh_primary) brelse(bh_primary); if (!silent) ntfs_error(sb, "Mount option errors=recover not used. " "Aborting without trying to recover."); return NULL; } /* Try to read NT4+ backup boot sector. */ if ((bh_backup = sb_bread(sb, nr_blocks - 1))) { if (is_boot_sector_ntfs(sb, (NTFS_BOOT_SECTOR*) bh_backup->b_data, silent)) goto hotfix_primary_boot_sector; brelse(bh_backup); } else if (!silent) ntfs_error(sb, read_err_str, "backup"); /* Try to read NT3.51- backup boot sector. */ if ((bh_backup = sb_bread(sb, nr_blocks >> 1))) { if (is_boot_sector_ntfs(sb, (NTFS_BOOT_SECTOR*) bh_backup->b_data, silent)) goto hotfix_primary_boot_sector; if (!silent) ntfs_error(sb, "Could not find a valid backup boot " "sector."); brelse(bh_backup); } else if (!silent) ntfs_error(sb, read_err_str, "backup"); /* We failed. Cleanup and return. */ if (bh_primary) brelse(bh_primary); return NULL; hotfix_primary_boot_sector: if (bh_primary) { /* * If we managed to read sector zero and the volume is not * read-only, copy the found, valid backup boot sector to the |
78af34f03 NTFS: Implement s... |
699 700 701 702 703 704 |
* primary boot sector. Note we only copy the actual boot * sector structure, not the actual whole device sector as that * may be bigger and would potentially damage the $Boot system * file (FIXME: Would be nice to know if the backup boot sector * on a large sector device contains the whole boot loader or * just the first 512 bytes). |
1da177e4c Linux-2.6.12-rc2 |
705 706 707 708 709 |
*/ if (!(sb->s_flags & MS_RDONLY)) { ntfs_warning(sb, "Hot-fix: Recovering invalid primary " "boot sector from backup copy."); memcpy(bh_primary->b_data, bh_backup->b_data, |
78af34f03 NTFS: Implement s... |
710 |
NTFS_BLOCK_SIZE); |
1da177e4c Linux-2.6.12-rc2 |
711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 |
mark_buffer_dirty(bh_primary); sync_dirty_buffer(bh_primary); if (buffer_uptodate(bh_primary)) { brelse(bh_backup); return bh_primary; } ntfs_error(sb, "Hot-fix: Device write error while " "recovering primary boot sector."); } else { ntfs_warning(sb, "Hot-fix: Recovery of primary boot " "sector failed: Read-only mount."); } brelse(bh_primary); } ntfs_warning(sb, "Using backup boot sector."); return bh_backup; } /** * parse_ntfs_boot_sector - parse the boot sector and store the data in @vol * @vol: volume structure to initialise with data from boot sector * @b: boot sector to parse * * Parse the ntfs boot sector @b and store all imporant information therein in |
c49c31115 [PATCH] fs/ntfs: ... |
735 |
* the ntfs super block @vol. Return 'true' on success and 'false' on error. |
1da177e4c Linux-2.6.12-rc2 |
736 |
*/ |
c49c31115 [PATCH] fs/ntfs: ... |
737 |
static bool parse_ntfs_boot_sector(ntfs_volume *vol, const NTFS_BOOT_SECTOR *b) |
1da177e4c Linux-2.6.12-rc2 |
738 739 740 741 742 743 744 745 746 747 748 |
{ unsigned int sectors_per_cluster_bits, nr_hidden_sects; int clusters_per_mft_record, clusters_per_index_record; s64 ll; vol->sector_size = le16_to_cpu(b->bpb.bytes_per_sector); vol->sector_size_bits = ffs(vol->sector_size) - 1; ntfs_debug("vol->sector_size = %i (0x%x)", vol->sector_size, vol->sector_size); ntfs_debug("vol->sector_size_bits = %i (0x%x)", vol->sector_size_bits, vol->sector_size_bits); |
78af34f03 NTFS: Implement s... |
749 750 751 752 753 |
if (vol->sector_size < vol->sb->s_blocksize) { ntfs_error(vol->sb, "Sector size (%i) is smaller than the " "device block size (%lu). This is not " "supported. Sorry.", vol->sector_size, vol->sb->s_blocksize); |
c49c31115 [PATCH] fs/ntfs: ... |
754 |
return false; |
78af34f03 NTFS: Implement s... |
755 |
} |
1da177e4c Linux-2.6.12-rc2 |
756 757 758 759 760 761 762 763 764 765 766 767 |
ntfs_debug("sectors_per_cluster = 0x%x", b->bpb.sectors_per_cluster); sectors_per_cluster_bits = ffs(b->bpb.sectors_per_cluster) - 1; ntfs_debug("sectors_per_cluster_bits = 0x%x", sectors_per_cluster_bits); nr_hidden_sects = le32_to_cpu(b->bpb.hidden_sectors); ntfs_debug("number of hidden sectors = 0x%x", nr_hidden_sects); vol->cluster_size = vol->sector_size << sectors_per_cluster_bits; vol->cluster_size_mask = vol->cluster_size - 1; vol->cluster_size_bits = ffs(vol->cluster_size) - 1; ntfs_debug("vol->cluster_size = %i (0x%x)", vol->cluster_size, vol->cluster_size); ntfs_debug("vol->cluster_size_mask = 0x%x", vol->cluster_size_mask); |
78af34f03 NTFS: Implement s... |
768 769 770 771 772 |
ntfs_debug("vol->cluster_size_bits = %i", vol->cluster_size_bits); if (vol->cluster_size < vol->sector_size) { ntfs_error(vol->sb, "Cluster size (%i) is smaller than the " "sector size (%i). This is not supported. " "Sorry.", vol->cluster_size, vol->sector_size); |
c49c31115 [PATCH] fs/ntfs: ... |
773 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 |
} clusters_per_mft_record = b->clusters_per_mft_record; ntfs_debug("clusters_per_mft_record = %i (0x%x)", clusters_per_mft_record, clusters_per_mft_record); if (clusters_per_mft_record > 0) vol->mft_record_size = vol->cluster_size << (ffs(clusters_per_mft_record) - 1); else /* * When mft_record_size < cluster_size, clusters_per_mft_record * = -log2(mft_record_size) bytes. mft_record_size normaly is * 1024 bytes, which is encoded as 0xF6 (-10 in decimal). */ vol->mft_record_size = 1 << -clusters_per_mft_record; vol->mft_record_size_mask = vol->mft_record_size - 1; vol->mft_record_size_bits = ffs(vol->mft_record_size) - 1; ntfs_debug("vol->mft_record_size = %i (0x%x)", vol->mft_record_size, vol->mft_record_size); ntfs_debug("vol->mft_record_size_mask = 0x%x", vol->mft_record_size_mask); ntfs_debug("vol->mft_record_size_bits = %i (0x%x)", vol->mft_record_size_bits, vol->mft_record_size_bits); /* * We cannot support mft record sizes above the PAGE_CACHE_SIZE since * we store $MFT/$DATA, the table of mft records in the page cache. */ if (vol->mft_record_size > PAGE_CACHE_SIZE) { |
78af34f03 NTFS: Implement s... |
801 802 |
ntfs_error(vol->sb, "Mft record size (%i) exceeds the " "PAGE_CACHE_SIZE on your system (%lu). " |
1da177e4c Linux-2.6.12-rc2 |
803 |
"This is not supported. Sorry.", |
78af34f03 NTFS: Implement s... |
804 |
vol->mft_record_size, PAGE_CACHE_SIZE); |
c49c31115 [PATCH] fs/ntfs: ... |
805 |
return false; |
78af34f03 NTFS: Implement s... |
806 807 808 809 810 811 812 |
} /* We cannot support mft record sizes below the sector size. */ if (vol->mft_record_size < vol->sector_size) { ntfs_error(vol->sb, "Mft record size (%i) is smaller than the " "sector size (%i). This is not supported. " "Sorry.", vol->mft_record_size, vol->sector_size); |
c49c31115 [PATCH] fs/ntfs: ... |
813 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 |
} clusters_per_index_record = b->clusters_per_index_record; ntfs_debug("clusters_per_index_record = %i (0x%x)", clusters_per_index_record, clusters_per_index_record); if (clusters_per_index_record > 0) vol->index_record_size = vol->cluster_size << (ffs(clusters_per_index_record) - 1); else /* * When index_record_size < cluster_size, * clusters_per_index_record = -log2(index_record_size) bytes. * index_record_size normaly equals 4096 bytes, which is * encoded as 0xF4 (-12 in decimal). */ vol->index_record_size = 1 << -clusters_per_index_record; vol->index_record_size_mask = vol->index_record_size - 1; vol->index_record_size_bits = ffs(vol->index_record_size) - 1; ntfs_debug("vol->index_record_size = %i (0x%x)", vol->index_record_size, vol->index_record_size); ntfs_debug("vol->index_record_size_mask = 0x%x", vol->index_record_size_mask); ntfs_debug("vol->index_record_size_bits = %i (0x%x)", vol->index_record_size_bits, vol->index_record_size_bits); |
78af34f03 NTFS: Implement s... |
838 839 840 841 842 843 |
/* We cannot support index record sizes below the sector size. */ if (vol->index_record_size < vol->sector_size) { ntfs_error(vol->sb, "Index record size (%i) is smaller than " "the sector size (%i). This is not " "supported. Sorry.", vol->index_record_size, vol->sector_size); |
c49c31115 [PATCH] fs/ntfs: ... |
844 |
return false; |
78af34f03 NTFS: Implement s... |
845 |
} |
1da177e4c Linux-2.6.12-rc2 |
846 847 848 849 850 851 852 853 |
/* * Get the size of the volume in clusters and check for 64-bit-ness. * Windows currently only uses 32 bits to save the clusters so we do * the same as it is much faster on 32-bit CPUs. */ ll = sle64_to_cpu(b->number_of_sectors) >> sectors_per_cluster_bits; if ((u64)ll >= 1ULL << 32) { ntfs_error(vol->sb, "Cannot handle 64-bit clusters. Sorry."); |
c49c31115 [PATCH] fs/ntfs: ... |
854 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 |
} vol->nr_clusters = ll; ntfs_debug("vol->nr_clusters = 0x%llx", (long long)vol->nr_clusters); /* * On an architecture where unsigned long is 32-bits, we restrict the * volume size to 2TiB (2^41). On a 64-bit architecture, the compiler * will hopefully optimize the whole check away. */ if (sizeof(unsigned long) < 8) { if ((ll << vol->cluster_size_bits) >= (1ULL << 41)) { ntfs_error(vol->sb, "Volume size (%lluTiB) is too " "large for this architecture. " "Maximum supported is 2TiB. Sorry.", (unsigned long long)ll >> (40 - vol->cluster_size_bits)); |
c49c31115 [PATCH] fs/ntfs: ... |
870 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
871 872 873 874 |
} } ll = sle64_to_cpu(b->mft_lcn); if (ll >= vol->nr_clusters) { |
78af34f03 NTFS: Implement s... |
875 876 877 |
ntfs_error(vol->sb, "MFT LCN (%lli, 0x%llx) is beyond end of " "volume. Weird.", (unsigned long long)ll, (unsigned long long)ll); |
c49c31115 [PATCH] fs/ntfs: ... |
878 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
879 880 881 882 883 |
} vol->mft_lcn = ll; ntfs_debug("vol->mft_lcn = 0x%llx", (long long)vol->mft_lcn); ll = sle64_to_cpu(b->mftmirr_lcn); if (ll >= vol->nr_clusters) { |
78af34f03 NTFS: Implement s... |
884 885 886 |
ntfs_error(vol->sb, "MFTMirr LCN (%lli, 0x%llx) is beyond end " "of volume. Weird.", (unsigned long long)ll, (unsigned long long)ll); |
c49c31115 [PATCH] fs/ntfs: ... |
887 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 |
} vol->mftmirr_lcn = ll; ntfs_debug("vol->mftmirr_lcn = 0x%llx", (long long)vol->mftmirr_lcn); #ifdef NTFS_RW /* * Work out the size of the mft mirror in number of mft records. If the * cluster size is less than or equal to the size taken by four mft * records, the mft mirror stores the first four mft records. If the * cluster size is bigger than the size taken by four mft records, the * mft mirror contains as many mft records as will fit into one * cluster. */ if (vol->cluster_size <= (4 << vol->mft_record_size_bits)) vol->mftmirr_size = 4; else vol->mftmirr_size = vol->cluster_size >> vol->mft_record_size_bits; ntfs_debug("vol->mftmirr_size = %i", vol->mftmirr_size); #endif /* NTFS_RW */ vol->serial_no = le64_to_cpu(b->volume_serial_number); ntfs_debug("vol->serial_no = 0x%llx", (unsigned long long)vol->serial_no); |
c49c31115 [PATCH] fs/ntfs: ... |
910 |
return true; |
1da177e4c Linux-2.6.12-rc2 |
911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 |
} /** * ntfs_setup_allocators - initialize the cluster and mft allocators * @vol: volume structure for which to setup the allocators * * Setup the cluster (lcn) and mft allocators to the starting values. */ static void ntfs_setup_allocators(ntfs_volume *vol) { #ifdef NTFS_RW LCN mft_zone_size, mft_lcn; #endif /* NTFS_RW */ ntfs_debug("vol->mft_zone_multiplier = 0x%x", vol->mft_zone_multiplier); #ifdef NTFS_RW /* Determine the size of the MFT zone. */ mft_zone_size = vol->nr_clusters; switch (vol->mft_zone_multiplier) { /* % of volume size in clusters */ case 4: mft_zone_size >>= 1; /* 50% */ break; case 3: mft_zone_size = (mft_zone_size + (mft_zone_size >> 1)) >> 2; /* 37.5% */ break; case 2: mft_zone_size >>= 2; /* 25% */ break; /* case 1: */ default: mft_zone_size >>= 3; /* 12.5% */ break; } /* Setup the mft zone. */ vol->mft_zone_start = vol->mft_zone_pos = vol->mft_lcn; ntfs_debug("vol->mft_zone_pos = 0x%llx", (unsigned long long)vol->mft_zone_pos); /* * Calculate the mft_lcn for an unmodified NTFS volume (see mkntfs * source) and if the actual mft_lcn is in the expected place or even * further to the front of the volume, extend the mft_zone to cover the * beginning of the volume as well. This is in order to protect the * area reserved for the mft bitmap as well within the mft_zone itself. * On non-standard volumes we do not protect it as the overhead would * be higher than the speed increase we would get by doing it. */ mft_lcn = (8192 + 2 * vol->cluster_size - 1) / vol->cluster_size; if (mft_lcn * vol->cluster_size < 16 * 1024) mft_lcn = (16 * 1024 + vol->cluster_size - 1) / vol->cluster_size; if (vol->mft_zone_start <= mft_lcn) vol->mft_zone_start = 0; ntfs_debug("vol->mft_zone_start = 0x%llx", (unsigned long long)vol->mft_zone_start); /* * Need to cap the mft zone on non-standard volumes so that it does * not point outside the boundaries of the volume. We do this by * halving the zone size until we are inside the volume. */ vol->mft_zone_end = vol->mft_lcn + mft_zone_size; while (vol->mft_zone_end >= vol->nr_clusters) { mft_zone_size >>= 1; vol->mft_zone_end = vol->mft_lcn + mft_zone_size; } ntfs_debug("vol->mft_zone_end = 0x%llx", (unsigned long long)vol->mft_zone_end); /* * Set the current position within each data zone to the start of the * respective zone. */ vol->data1_zone_pos = vol->mft_zone_end; ntfs_debug("vol->data1_zone_pos = 0x%llx", (unsigned long long)vol->data1_zone_pos); vol->data2_zone_pos = 0; ntfs_debug("vol->data2_zone_pos = 0x%llx", (unsigned long long)vol->data2_zone_pos); /* Set the mft data allocation position to mft record 24. */ vol->mft_data_pos = 24; ntfs_debug("vol->mft_data_pos = 0x%llx", (unsigned long long)vol->mft_data_pos); #endif /* NTFS_RW */ } #ifdef NTFS_RW /** * load_and_init_mft_mirror - load and setup the mft mirror inode for a volume * @vol: ntfs super block describing device whose mft mirror to load * |
c49c31115 [PATCH] fs/ntfs: ... |
1003 |
* Return 'true' on success or 'false' on error. |
1da177e4c Linux-2.6.12-rc2 |
1004 |
*/ |
c49c31115 [PATCH] fs/ntfs: ... |
1005 |
static bool load_and_init_mft_mirror(ntfs_volume *vol) |
1da177e4c Linux-2.6.12-rc2 |
1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 |
{ struct inode *tmp_ino; ntfs_inode *tmp_ni; ntfs_debug("Entering."); /* Get mft mirror inode. */ tmp_ino = ntfs_iget(vol->sb, FILE_MFTMirr); if (IS_ERR(tmp_ino) || is_bad_inode(tmp_ino)) { if (!IS_ERR(tmp_ino)) iput(tmp_ino); /* Caller will display error message. */ |
c49c31115 [PATCH] fs/ntfs: ... |
1017 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 |
} /* * Re-initialize some specifics about $MFTMirr's inode as * ntfs_read_inode() will have set up the default ones. */ /* Set uid and gid to root. */ tmp_ino->i_uid = tmp_ino->i_gid = 0; /* Regular file. No access for anyone. */ tmp_ino->i_mode = S_IFREG; /* No VFS initiated operations allowed for $MFTMirr. */ tmp_ino->i_op = &ntfs_empty_inode_ops; tmp_ino->i_fop = &ntfs_empty_file_ops; /* Put in our special address space operations. */ tmp_ino->i_mapping->a_ops = &ntfs_mst_aops; tmp_ni = NTFS_I(tmp_ino); /* The $MFTMirr, like the $MFT is multi sector transfer protected. */ NInoSetMstProtected(tmp_ni); |
c002f4254 NTFS: - Add disab... |
1035 |
NInoSetSparseDisabled(tmp_ni); |
1da177e4c Linux-2.6.12-rc2 |
1036 1037 1038 1039 1040 1041 1042 1043 |
/* * Set up our little cheat allowing us to reuse the async read io * completion handler for directories. */ tmp_ni->itype.index.block_size = vol->mft_record_size; tmp_ni->itype.index.block_size_bits = vol->mft_record_size_bits; vol->mftmirr_ino = tmp_ino; ntfs_debug("Done."); |
c49c31115 [PATCH] fs/ntfs: ... |
1044 |
return true; |
1da177e4c Linux-2.6.12-rc2 |
1045 1046 1047 1048 1049 1050 |
} /** * check_mft_mirror - compare contents of the mft mirror with the mft * @vol: ntfs super block describing device whose mft mirror to check * |
c49c31115 [PATCH] fs/ntfs: ... |
1051 |
* Return 'true' on success or 'false' on error. |
1da177e4c Linux-2.6.12-rc2 |
1052 1053 1054 1055 1056 |
* * Note, this function also results in the mft mirror runlist being completely * mapped into memory. The mft mirror write code requires this and will BUG() * should it find an unmapped runlist element. */ |
c49c31115 [PATCH] fs/ntfs: ... |
1057 |
static bool check_mft_mirror(ntfs_volume *vol) |
1da177e4c Linux-2.6.12-rc2 |
1058 |
{ |
1da177e4c Linux-2.6.12-rc2 |
1059 1060 1061 1062 1063 |
struct super_block *sb = vol->sb; ntfs_inode *mirr_ni; struct page *mft_page, *mirr_page; u8 *kmft, *kmirr; runlist_element *rl, rl2[2]; |
218357ff1 NTFS: - Use i_siz... |
1064 |
pgoff_t index; |
1da177e4c Linux-2.6.12-rc2 |
1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 |
int mrecs_per_page, i; ntfs_debug("Entering."); /* Compare contents of $MFT and $MFTMirr. */ mrecs_per_page = PAGE_CACHE_SIZE / vol->mft_record_size; BUG_ON(!mrecs_per_page); BUG_ON(!vol->mftmirr_size); mft_page = mirr_page = NULL; kmft = kmirr = NULL; index = i = 0; do { u32 bytes; /* Switch pages if necessary. */ if (!(i % mrecs_per_page)) { if (index) { ntfs_unmap_page(mft_page); ntfs_unmap_page(mirr_page); } /* Get the $MFT page. */ mft_page = ntfs_map_page(vol->mft_ino->i_mapping, index); if (IS_ERR(mft_page)) { ntfs_error(sb, "Failed to read $MFT."); |
c49c31115 [PATCH] fs/ntfs: ... |
1089 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 |
} kmft = page_address(mft_page); /* Get the $MFTMirr page. */ mirr_page = ntfs_map_page(vol->mftmirr_ino->i_mapping, index); if (IS_ERR(mirr_page)) { ntfs_error(sb, "Failed to read $MFTMirr."); goto mft_unmap_out; } kmirr = page_address(mirr_page); ++index; } |
949763b2b NTFS: Fix compari... |
1102 1103 1104 1105 1106 1107 1108 |
/* Do not check the record if it is not in use. */ if (((MFT_RECORD*)kmft)->flags & MFT_RECORD_IN_USE) { /* Make sure the record is ok. */ if (ntfs_is_baad_recordp((le32*)kmft)) { ntfs_error(sb, "Incomplete multi sector " "transfer detected in mft " "record %i.", i); |
1da177e4c Linux-2.6.12-rc2 |
1109 |
mm_unmap_out: |
949763b2b NTFS: Fix compari... |
1110 |
ntfs_unmap_page(mirr_page); |
1da177e4c Linux-2.6.12-rc2 |
1111 |
mft_unmap_out: |
949763b2b NTFS: Fix compari... |
1112 |
ntfs_unmap_page(mft_page); |
c49c31115 [PATCH] fs/ntfs: ... |
1113 |
return false; |
949763b2b NTFS: Fix compari... |
1114 |
} |
1da177e4c Linux-2.6.12-rc2 |
1115 |
} |
949763b2b NTFS: Fix compari... |
1116 1117 1118 1119 1120 1121 1122 1123 |
/* Do not check the mirror record if it is not in use. */ if (((MFT_RECORD*)kmirr)->flags & MFT_RECORD_IN_USE) { if (ntfs_is_baad_recordp((le32*)kmirr)) { ntfs_error(sb, "Incomplete multi sector " "transfer detected in mft " "mirror record %i.", i); goto mm_unmap_out; } |
1da177e4c Linux-2.6.12-rc2 |
1124 1125 1126 |
} /* Get the amount of data in the current record. */ bytes = le32_to_cpu(((MFT_RECORD*)kmft)->bytes_in_use); |
949763b2b NTFS: Fix compari... |
1127 1128 1129 |
if (bytes < sizeof(MFT_RECORD_OLD) || bytes > vol->mft_record_size || ntfs_is_baad_recordp((le32*)kmft)) { |
1da177e4c Linux-2.6.12-rc2 |
1130 |
bytes = le32_to_cpu(((MFT_RECORD*)kmirr)->bytes_in_use); |
949763b2b NTFS: Fix compari... |
1131 1132 1133 |
if (bytes < sizeof(MFT_RECORD_OLD) || bytes > vol->mft_record_size || ntfs_is_baad_recordp((le32*)kmirr)) |
1da177e4c Linux-2.6.12-rc2 |
1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 |
bytes = vol->mft_record_size; } /* Compare the two records. */ if (memcmp(kmft, kmirr, bytes)) { ntfs_error(sb, "$MFT and $MFTMirr (record %i) do not " "match. Run ntfsfix or chkdsk.", i); goto mm_unmap_out; } kmft += vol->mft_record_size; kmirr += vol->mft_record_size; } while (++i < vol->mftmirr_size); /* Release the last pages. */ ntfs_unmap_page(mft_page); ntfs_unmap_page(mirr_page); /* Construct the mft mirror runlist by hand. */ rl2[0].vcn = 0; rl2[0].lcn = vol->mftmirr_lcn; rl2[0].length = (vol->mftmirr_size * vol->mft_record_size + vol->cluster_size - 1) / vol->cluster_size; rl2[1].vcn = rl2[0].length; rl2[1].lcn = LCN_ENOENT; rl2[1].length = 0; /* * Because we have just read all of the mft mirror, we know we have * mapped the full runlist for it. */ mirr_ni = NTFS_I(vol->mftmirr_ino); down_read(&mirr_ni->runlist.lock); rl = mirr_ni->runlist.rl; /* Compare the two runlists. They must be identical. */ i = 0; do { if (rl2[i].vcn != rl[i].vcn || rl2[i].lcn != rl[i].lcn || rl2[i].length != rl[i].length) { ntfs_error(sb, "$MFTMirr location mismatch. " "Run chkdsk."); up_read(&mirr_ni->runlist.lock); |
c49c31115 [PATCH] fs/ntfs: ... |
1172 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
1173 1174 1175 1176 |
} } while (rl2[i++].length); up_read(&mirr_ni->runlist.lock); ntfs_debug("Done."); |
c49c31115 [PATCH] fs/ntfs: ... |
1177 |
return true; |
1da177e4c Linux-2.6.12-rc2 |
1178 1179 1180 1181 1182 1183 |
} /** * load_and_check_logfile - load and check the logfile inode for a volume * @vol: ntfs super block describing device whose logfile to load * |
c49c31115 [PATCH] fs/ntfs: ... |
1184 |
* Return 'true' on success or 'false' on error. |
1da177e4c Linux-2.6.12-rc2 |
1185 |
*/ |
c49c31115 [PATCH] fs/ntfs: ... |
1186 |
static bool load_and_check_logfile(ntfs_volume *vol, |
e7a1033b9 NTFS: Support mor... |
1187 |
RESTART_PAGE_HEADER **rp) |
1da177e4c Linux-2.6.12-rc2 |
1188 1189 1190 1191 1192 1193 1194 1195 1196 |
{ struct inode *tmp_ino; ntfs_debug("Entering."); tmp_ino = ntfs_iget(vol->sb, FILE_LogFile); if (IS_ERR(tmp_ino) || is_bad_inode(tmp_ino)) { if (!IS_ERR(tmp_ino)) iput(tmp_ino); /* Caller will display error message. */ |
c49c31115 [PATCH] fs/ntfs: ... |
1197 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
1198 |
} |
e7a1033b9 NTFS: Support mor... |
1199 |
if (!ntfs_check_logfile(tmp_ino, rp)) { |
1da177e4c Linux-2.6.12-rc2 |
1200 1201 |
iput(tmp_ino); /* ntfs_check_logfile() will have displayed error output. */ |
c49c31115 [PATCH] fs/ntfs: ... |
1202 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
1203 |
} |
c002f4254 NTFS: - Add disab... |
1204 |
NInoSetSparseDisabled(NTFS_I(tmp_ino)); |
1da177e4c Linux-2.6.12-rc2 |
1205 1206 |
vol->logfile_ino = tmp_ino; ntfs_debug("Done."); |
c49c31115 [PATCH] fs/ntfs: ... |
1207 |
return true; |
1da177e4c Linux-2.6.12-rc2 |
1208 |
} |
ca8fd7a0c NTFS: Detect the ... |
1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 |
#define NTFS_HIBERFIL_HEADER_SIZE 4096 /** * check_windows_hibernation_status - check if Windows is suspended on a volume * @vol: ntfs super block of device to check * * Check if Windows is hibernated on the ntfs volume @vol. This is done by * looking for the file hiberfil.sys in the root directory of the volume. If * the file is not present Windows is definitely not suspended. * * If hiberfil.sys exists and is less than 4kiB in size it means Windows is * definitely suspended (this volume is not the system volume). Caveat: on a * system with many volumes it is possible that the < 4kiB check is bogus but * for now this should do fine. * * If hiberfil.sys exists and is larger than 4kiB in size, we need to read the * hiberfil header (which is the first 4kiB). If this begins with "hibr", * Windows is definitely suspended. If it is completely full of zeroes, * Windows is definitely not hibernated. Any other case is treated as if * Windows is suspended. This caters for the above mentioned caveat of a * system with many volumes where no "hibr" magic would be present and there is * no zero header. * * Return 0 if Windows is not hibernated on the volume, >0 if Windows is * hibernated on the volume, and -errno on error. */ static int check_windows_hibernation_status(ntfs_volume *vol) { MFT_REF mref; struct inode *vi; ntfs_inode *ni; struct page *page; u32 *kaddr, *kend; ntfs_name *name = NULL; int ret = 1; |
63cd88542 ntfs: remove priv... |
1244 1245 1246 1247 1248 1249 1250 |
static const ntfschar hiberfil[13] = { cpu_to_le16('h'), cpu_to_le16('i'), cpu_to_le16('b'), cpu_to_le16('e'), cpu_to_le16('r'), cpu_to_le16('f'), cpu_to_le16('i'), cpu_to_le16('l'), cpu_to_le16('.'), cpu_to_le16('s'), cpu_to_le16('y'), cpu_to_le16('s'), 0 }; |
ca8fd7a0c NTFS: Detect the ... |
1251 1252 1253 1254 1255 1256 |
ntfs_debug("Entering."); /* * Find the inode number for the hibernation file by looking up the * filename hiberfil.sys in the root directory. */ |
1b1dcc1b5 [PATCH] mutex sub... |
1257 |
mutex_lock(&vol->root_ino->i_mutex); |
ca8fd7a0c NTFS: Detect the ... |
1258 1259 |
mref = ntfs_lookup_inode_by_name(NTFS_I(vol->root_ino), hiberfil, 12, &name); |
1b1dcc1b5 [PATCH] mutex sub... |
1260 |
mutex_unlock(&vol->root_ino->i_mutex); |
ca8fd7a0c NTFS: Detect the ... |
1261 1262 1263 1264 1265 1266 1267 1268 |
if (IS_ERR_MREF(mref)) { ret = MREF_ERR(mref); /* If the file does not exist, Windows is not hibernated. */ if (ret == -ENOENT) { ntfs_debug("hiberfil.sys not present. Windows is not " "hibernated on the volume."); return 0; } |
25985edce Fix common misspe... |
1269 |
/* A real error occurred. */ |
ca8fd7a0c NTFS: Detect the ... |
1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 |
ntfs_error(vol->sb, "Failed to find inode number for " "hiberfil.sys."); return ret; } /* We do not care for the type of match that was found. */ kfree(name); /* Get the inode. */ vi = ntfs_iget(vol->sb, MREF(mref)); if (IS_ERR(vi) || is_bad_inode(vi)) { if (!IS_ERR(vi)) iput(vi); ntfs_error(vol->sb, "Failed to load hiberfil.sys."); return IS_ERR(vi) ? PTR_ERR(vi) : -EIO; } if (unlikely(i_size_read(vi) < NTFS_HIBERFIL_HEADER_SIZE)) { ntfs_debug("hiberfil.sys is smaller than 4kiB (0x%llx). " "Windows is hibernated on the volume. This " "is not the system volume.", i_size_read(vi)); goto iput_out; } ni = NTFS_I(vi); page = ntfs_map_page(vi->i_mapping, 0); if (IS_ERR(page)) { ntfs_error(vol->sb, "Failed to read from hiberfil.sys."); ret = PTR_ERR(page); goto iput_out; } kaddr = (u32*)page_address(page); |
63cd88542 ntfs: remove priv... |
1298 |
if (*(le32*)kaddr == cpu_to_le32(0x72626968)/*'hibr'*/) { |
ca8fd7a0c NTFS: Detect the ... |
1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 |
ntfs_debug("Magic \"hibr\" found in hiberfil.sys. Windows is " "hibernated on the volume. This is the " "system volume."); goto unm_iput_out; } kend = kaddr + NTFS_HIBERFIL_HEADER_SIZE/sizeof(*kaddr); do { if (unlikely(*kaddr)) { ntfs_debug("hiberfil.sys is larger than 4kiB " "(0x%llx), does not contain the " "\"hibr\" magic, and does not have a " "zero header. Windows is hibernated " "on the volume. This is not the " "system volume.", i_size_read(vi)); goto unm_iput_out; } } while (++kaddr < kend); ntfs_debug("hiberfil.sys contains a zero header. Windows is not " "hibernated on the volume. This is the system " "volume."); ret = 0; unm_iput_out: ntfs_unmap_page(page); iput_out: iput(vi); return ret; } |
1da177e4c Linux-2.6.12-rc2 |
1326 1327 1328 1329 |
/** * load_and_init_quota - load and setup the quota file for a volume if present * @vol: ntfs super block describing device whose quota file to load * |
c49c31115 [PATCH] fs/ntfs: ... |
1330 |
* Return 'true' on success or 'false' on error. If $Quota is not present, we |
1da177e4c Linux-2.6.12-rc2 |
1331 1332 |
* leave vol->quota_ino as NULL and return success. */ |
c49c31115 [PATCH] fs/ntfs: ... |
1333 |
static bool load_and_init_quota(ntfs_volume *vol) |
1da177e4c Linux-2.6.12-rc2 |
1334 1335 1336 1337 |
{ MFT_REF mref; struct inode *tmp_ino; ntfs_name *name = NULL; |
63cd88542 ntfs: remove priv... |
1338 1339 1340 1341 1342 1343 |
static const ntfschar Quota[7] = { cpu_to_le16('$'), cpu_to_le16('Q'), cpu_to_le16('u'), cpu_to_le16('o'), cpu_to_le16('t'), cpu_to_le16('a'), 0 }; static ntfschar Q[3] = { cpu_to_le16('$'), cpu_to_le16('Q'), 0 }; |
1da177e4c Linux-2.6.12-rc2 |
1344 1345 1346 1347 1348 1349 |
ntfs_debug("Entering."); /* * Find the inode number for the quota file by looking up the filename * $Quota in the extended system files directory $Extend. */ |
1b1dcc1b5 [PATCH] mutex sub... |
1350 |
mutex_lock(&vol->extend_ino->i_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1351 1352 |
mref = ntfs_lookup_inode_by_name(NTFS_I(vol->extend_ino), Quota, 6, &name); |
1b1dcc1b5 [PATCH] mutex sub... |
1353 |
mutex_unlock(&vol->extend_ino->i_mutex); |
1da177e4c Linux-2.6.12-rc2 |
1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 |
if (IS_ERR_MREF(mref)) { /* * If the file does not exist, quotas are disabled and have * never been enabled on this volume, just return success. */ if (MREF_ERR(mref) == -ENOENT) { ntfs_debug("$Quota not present. Volume does not have " "quotas enabled."); /* * No need to try to set quotas out of date if they are * not enabled. */ NVolSetQuotaOutOfDate(vol); |
c49c31115 [PATCH] fs/ntfs: ... |
1367 |
return true; |
1da177e4c Linux-2.6.12-rc2 |
1368 |
} |
25985edce Fix common misspe... |
1369 |
/* A real error occurred. */ |
1da177e4c Linux-2.6.12-rc2 |
1370 |
ntfs_error(vol->sb, "Failed to find inode number for $Quota."); |
c49c31115 [PATCH] fs/ntfs: ... |
1371 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
1372 1373 |
} /* We do not care for the type of match that was found. */ |
251c8427c NTFS: Remove chec... |
1374 |
kfree(name); |
1da177e4c Linux-2.6.12-rc2 |
1375 1376 1377 1378 1379 1380 |
/* Get the inode. */ tmp_ino = ntfs_iget(vol->sb, MREF(mref)); if (IS_ERR(tmp_ino) || is_bad_inode(tmp_ino)) { if (!IS_ERR(tmp_ino)) iput(tmp_ino); ntfs_error(vol->sb, "Failed to load $Quota."); |
c49c31115 [PATCH] fs/ntfs: ... |
1381 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
1382 1383 1384 1385 1386 1387 |
} vol->quota_ino = tmp_ino; /* Get the $Q index allocation attribute. */ tmp_ino = ntfs_index_iget(vol->quota_ino, Q, 2); if (IS_ERR(tmp_ino)) { ntfs_error(vol->sb, "Failed to load $Quota/$Q index."); |
c49c31115 [PATCH] fs/ntfs: ... |
1388 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
1389 1390 1391 |
} vol->quota_q_ino = tmp_ino; ntfs_debug("Done."); |
c49c31115 [PATCH] fs/ntfs: ... |
1392 |
return true; |
1da177e4c Linux-2.6.12-rc2 |
1393 1394 1395 |
} /** |
3f2faef00 NTFS: Stamp the t... |
1396 1397 1398 |
* load_and_init_usnjrnl - load and setup the transaction log if present * @vol: ntfs super block describing device whose usnjrnl file to load * |
c49c31115 [PATCH] fs/ntfs: ... |
1399 |
* Return 'true' on success or 'false' on error. |
3f2faef00 NTFS: Stamp the t... |
1400 1401 1402 1403 1404 1405 1406 1407 1408 |
* * If $UsnJrnl is not present or in the process of being disabled, we set * NVolUsnJrnlStamped() and return success. * * If the $UsnJrnl $DATA/$J attribute has a size equal to the lowest valid usn, * i.e. transaction logging has only just been enabled or the journal has been * stamped and nothing has been logged since, we also set NVolUsnJrnlStamped() * and return success. */ |
c49c31115 [PATCH] fs/ntfs: ... |
1409 |
static bool load_and_init_usnjrnl(ntfs_volume *vol) |
3f2faef00 NTFS: Stamp the t... |
1410 1411 1412 1413 1414 1415 1416 |
{ MFT_REF mref; struct inode *tmp_ino; ntfs_inode *tmp_ni; struct page *page; ntfs_name *name = NULL; USN_HEADER *uh; |
63cd88542 ntfs: remove priv... |
1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 |
static const ntfschar UsnJrnl[9] = { cpu_to_le16('$'), cpu_to_le16('U'), cpu_to_le16('s'), cpu_to_le16('n'), cpu_to_le16('J'), cpu_to_le16('r'), cpu_to_le16('n'), cpu_to_le16('l'), 0 }; static ntfschar Max[5] = { cpu_to_le16('$'), cpu_to_le16('M'), cpu_to_le16('a'), cpu_to_le16('x'), 0 }; static ntfschar J[3] = { cpu_to_le16('$'), cpu_to_le16('J'), 0 }; |
3f2faef00 NTFS: Stamp the t... |
1427 1428 1429 1430 1431 1432 |
ntfs_debug("Entering."); /* * Find the inode number for the transaction log file by looking up the * filename $UsnJrnl in the extended system files directory $Extend. */ |
1b1dcc1b5 [PATCH] mutex sub... |
1433 |
mutex_lock(&vol->extend_ino->i_mutex); |
3f2faef00 NTFS: Stamp the t... |
1434 1435 |
mref = ntfs_lookup_inode_by_name(NTFS_I(vol->extend_ino), UsnJrnl, 8, &name); |
1b1dcc1b5 [PATCH] mutex sub... |
1436 |
mutex_unlock(&vol->extend_ino->i_mutex); |
3f2faef00 NTFS: Stamp the t... |
1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 |
if (IS_ERR_MREF(mref)) { /* * If the file does not exist, transaction logging is disabled, * just return success. */ if (MREF_ERR(mref) == -ENOENT) { ntfs_debug("$UsnJrnl not present. Volume does not " "have transaction logging enabled."); not_enabled: /* * No need to try to stamp the transaction log if * transaction logging is not enabled. */ NVolSetUsnJrnlStamped(vol); |
c49c31115 [PATCH] fs/ntfs: ... |
1451 |
return true; |
3f2faef00 NTFS: Stamp the t... |
1452 |
} |
25985edce Fix common misspe... |
1453 |
/* A real error occurred. */ |
3f2faef00 NTFS: Stamp the t... |
1454 1455 |
ntfs_error(vol->sb, "Failed to find inode number for " "$UsnJrnl."); |
c49c31115 [PATCH] fs/ntfs: ... |
1456 |
return false; |
3f2faef00 NTFS: Stamp the t... |
1457 1458 1459 1460 1461 1462 1463 1464 1465 |
} /* We do not care for the type of match that was found. */ kfree(name); /* Get the inode. */ tmp_ino = ntfs_iget(vol->sb, MREF(mref)); if (unlikely(IS_ERR(tmp_ino) || is_bad_inode(tmp_ino))) { if (!IS_ERR(tmp_ino)) iput(tmp_ino); ntfs_error(vol->sb, "Failed to load $UsnJrnl."); |
c49c31115 [PATCH] fs/ntfs: ... |
1466 |
return false; |
3f2faef00 NTFS: Stamp the t... |
1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 |
} vol->usnjrnl_ino = tmp_ino; /* * If the transaction log is in the process of being deleted, we can * ignore it. */ if (unlikely(vol->vol_flags & VOLUME_DELETE_USN_UNDERWAY)) { ntfs_debug("$UsnJrnl in the process of being disabled. " "Volume does not have transaction logging " "enabled."); goto not_enabled; } /* Get the $DATA/$Max attribute. */ tmp_ino = ntfs_attr_iget(vol->usnjrnl_ino, AT_DATA, Max, 4); if (IS_ERR(tmp_ino)) { ntfs_error(vol->sb, "Failed to load $UsnJrnl/$DATA/$Max " "attribute."); |
c49c31115 [PATCH] fs/ntfs: ... |
1484 |
return false; |
3f2faef00 NTFS: Stamp the t... |
1485 1486 1487 1488 1489 |
} vol->usnjrnl_max_ino = tmp_ino; if (unlikely(i_size_read(tmp_ino) < sizeof(USN_HEADER))) { ntfs_error(vol->sb, "Found corrupt $UsnJrnl/$DATA/$Max " "attribute (size is 0x%llx but should be at " |
d04bd1fb6 NTFS: Use %z for ... |
1490 |
"least 0x%zx bytes).", i_size_read(tmp_ino), |
3f2faef00 NTFS: Stamp the t... |
1491 |
sizeof(USN_HEADER)); |
c49c31115 [PATCH] fs/ntfs: ... |
1492 |
return false; |
3f2faef00 NTFS: Stamp the t... |
1493 1494 1495 1496 1497 1498 |
} /* Get the $DATA/$J attribute. */ tmp_ino = ntfs_attr_iget(vol->usnjrnl_ino, AT_DATA, J, 2); if (IS_ERR(tmp_ino)) { ntfs_error(vol->sb, "Failed to load $UsnJrnl/$DATA/$J " "attribute."); |
c49c31115 [PATCH] fs/ntfs: ... |
1499 |
return false; |
3f2faef00 NTFS: Stamp the t... |
1500 1501 1502 1503 1504 1505 1506 |
} vol->usnjrnl_j_ino = tmp_ino; /* Verify $J is non-resident and sparse. */ tmp_ni = NTFS_I(vol->usnjrnl_j_ino); if (unlikely(!NInoNonResident(tmp_ni) || !NInoSparse(tmp_ni))) { ntfs_error(vol->sb, "$UsnJrnl/$DATA/$J attribute is resident " "and/or not sparse."); |
c49c31115 [PATCH] fs/ntfs: ... |
1507 |
return false; |
3f2faef00 NTFS: Stamp the t... |
1508 1509 1510 1511 1512 1513 |
} /* Read the USN_HEADER from $DATA/$Max. */ page = ntfs_map_page(vol->usnjrnl_max_ino->i_mapping, 0); if (IS_ERR(page)) { ntfs_error(vol->sb, "Failed to read from $UsnJrnl/$DATA/$Max " "attribute."); |
c49c31115 [PATCH] fs/ntfs: ... |
1514 |
return false; |
3f2faef00 NTFS: Stamp the t... |
1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 |
} uh = (USN_HEADER*)page_address(page); /* Sanity check the $Max. */ if (unlikely(sle64_to_cpu(uh->allocation_delta) > sle64_to_cpu(uh->maximum_size))) { ntfs_error(vol->sb, "Allocation delta (0x%llx) exceeds " "maximum size (0x%llx). $UsnJrnl is corrupt.", (long long)sle64_to_cpu(uh->allocation_delta), (long long)sle64_to_cpu(uh->maximum_size)); ntfs_unmap_page(page); |
c49c31115 [PATCH] fs/ntfs: ... |
1525 |
return false; |
3f2faef00 NTFS: Stamp the t... |
1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 |
} /* * If the transaction log has been stamped and nothing has been written * to it since, we do not need to stamp it. */ if (unlikely(sle64_to_cpu(uh->lowest_valid_usn) >= i_size_read(vol->usnjrnl_j_ino))) { if (likely(sle64_to_cpu(uh->lowest_valid_usn) == i_size_read(vol->usnjrnl_j_ino))) { ntfs_unmap_page(page); ntfs_debug("$UsnJrnl is enabled but nothing has been " "logged since it was last stamped. " "Treating this as if the volume does " "not have transaction logging " "enabled."); goto not_enabled; } ntfs_error(vol->sb, "$UsnJrnl has lowest valid usn (0x%llx) " "which is out of bounds (0x%llx). $UsnJrnl " "is corrupt.", (long long)sle64_to_cpu(uh->lowest_valid_usn), i_size_read(vol->usnjrnl_j_ino)); ntfs_unmap_page(page); |
c49c31115 [PATCH] fs/ntfs: ... |
1549 |
return false; |
3f2faef00 NTFS: Stamp the t... |
1550 1551 1552 |
} ntfs_unmap_page(page); ntfs_debug("Done."); |
c49c31115 [PATCH] fs/ntfs: ... |
1553 |
return true; |
3f2faef00 NTFS: Stamp the t... |
1554 1555 1556 |
} /** |
1da177e4c Linux-2.6.12-rc2 |
1557 1558 1559 |
* load_and_init_attrdef - load the attribute definitions table for a volume * @vol: ntfs super block describing device whose attrdef to load * |
c49c31115 [PATCH] fs/ntfs: ... |
1560 |
* Return 'true' on success or 'false' on error. |
1da177e4c Linux-2.6.12-rc2 |
1561 |
*/ |
c49c31115 [PATCH] fs/ntfs: ... |
1562 |
static bool load_and_init_attrdef(ntfs_volume *vol) |
1da177e4c Linux-2.6.12-rc2 |
1563 |
{ |
218357ff1 NTFS: - Use i_siz... |
1564 |
loff_t i_size; |
1da177e4c Linux-2.6.12-rc2 |
1565 1566 1567 |
struct super_block *sb = vol->sb; struct inode *ino; struct page *page; |
218357ff1 NTFS: - Use i_siz... |
1568 |
pgoff_t index, max_index; |
1da177e4c Linux-2.6.12-rc2 |
1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 |
unsigned int size; ntfs_debug("Entering."); /* Read attrdef table and setup vol->attrdef and vol->attrdef_size. */ ino = ntfs_iget(sb, FILE_AttrDef); if (IS_ERR(ino) || is_bad_inode(ino)) { if (!IS_ERR(ino)) iput(ino); goto failed; } |
c002f4254 NTFS: - Add disab... |
1579 |
NInoSetSparseDisabled(NTFS_I(ino)); |
1da177e4c Linux-2.6.12-rc2 |
1580 |
/* The size of FILE_AttrDef must be above 0 and fit inside 31 bits. */ |
218357ff1 NTFS: - Use i_siz... |
1581 1582 |
i_size = i_size_read(ino); if (i_size <= 0 || i_size > 0x7fffffff) |
1da177e4c Linux-2.6.12-rc2 |
1583 |
goto iput_failed; |
218357ff1 NTFS: - Use i_siz... |
1584 |
vol->attrdef = (ATTR_DEF*)ntfs_malloc_nofs(i_size); |
1da177e4c Linux-2.6.12-rc2 |
1585 1586 1587 |
if (!vol->attrdef) goto iput_failed; index = 0; |
218357ff1 NTFS: - Use i_siz... |
1588 |
max_index = i_size >> PAGE_CACHE_SHIFT; |
1da177e4c Linux-2.6.12-rc2 |
1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 |
size = PAGE_CACHE_SIZE; while (index < max_index) { /* Read the attrdef table and copy it into the linear buffer. */ read_partial_attrdef_page: page = ntfs_map_page(ino->i_mapping, index); if (IS_ERR(page)) goto free_iput_failed; memcpy((u8*)vol->attrdef + (index++ << PAGE_CACHE_SHIFT), page_address(page), size); ntfs_unmap_page(page); }; if (size == PAGE_CACHE_SIZE) { |
218357ff1 NTFS: - Use i_siz... |
1601 |
size = i_size & ~PAGE_CACHE_MASK; |
1da177e4c Linux-2.6.12-rc2 |
1602 1603 1604 |
if (size) goto read_partial_attrdef_page; } |
218357ff1 NTFS: - Use i_siz... |
1605 1606 |
vol->attrdef_size = i_size; ntfs_debug("Read %llu bytes from $AttrDef.", i_size); |
1da177e4c Linux-2.6.12-rc2 |
1607 |
iput(ino); |
c49c31115 [PATCH] fs/ntfs: ... |
1608 |
return true; |
1da177e4c Linux-2.6.12-rc2 |
1609 1610 1611 1612 1613 1614 1615 |
free_iput_failed: ntfs_free(vol->attrdef); vol->attrdef = NULL; iput_failed: iput(ino); failed: ntfs_error(sb, "Failed to initialize attribute definition table."); |
c49c31115 [PATCH] fs/ntfs: ... |
1616 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
1617 1618 1619 1620 1621 1622 1623 1624 |
} #endif /* NTFS_RW */ /** * load_and_init_upcase - load the upcase table for an ntfs volume * @vol: ntfs super block describing device whose upcase to load * |
c49c31115 [PATCH] fs/ntfs: ... |
1625 |
* Return 'true' on success or 'false' on error. |
1da177e4c Linux-2.6.12-rc2 |
1626 |
*/ |
c49c31115 [PATCH] fs/ntfs: ... |
1627 |
static bool load_and_init_upcase(ntfs_volume *vol) |
1da177e4c Linux-2.6.12-rc2 |
1628 |
{ |
218357ff1 NTFS: - Use i_siz... |
1629 |
loff_t i_size; |
1da177e4c Linux-2.6.12-rc2 |
1630 1631 1632 |
struct super_block *sb = vol->sb; struct inode *ino; struct page *page; |
218357ff1 NTFS: - Use i_siz... |
1633 |
pgoff_t index, max_index; |
1da177e4c Linux-2.6.12-rc2 |
1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 |
unsigned int size; int i, max; ntfs_debug("Entering."); /* Read upcase table and setup vol->upcase and vol->upcase_len. */ ino = ntfs_iget(sb, FILE_UpCase); if (IS_ERR(ino) || is_bad_inode(ino)) { if (!IS_ERR(ino)) iput(ino); goto upcase_failed; } /* * The upcase size must not be above 64k Unicode characters, must not * be zero and must be a multiple of sizeof(ntfschar). */ |
218357ff1 NTFS: - Use i_siz... |
1649 1650 1651 |
i_size = i_size_read(ino); if (!i_size || i_size & (sizeof(ntfschar) - 1) || i_size > 64ULL * 1024 * sizeof(ntfschar)) |
1da177e4c Linux-2.6.12-rc2 |
1652 |
goto iput_upcase_failed; |
218357ff1 NTFS: - Use i_siz... |
1653 |
vol->upcase = (ntfschar*)ntfs_malloc_nofs(i_size); |
1da177e4c Linux-2.6.12-rc2 |
1654 1655 1656 |
if (!vol->upcase) goto iput_upcase_failed; index = 0; |
218357ff1 NTFS: - Use i_siz... |
1657 |
max_index = i_size >> PAGE_CACHE_SHIFT; |
1da177e4c Linux-2.6.12-rc2 |
1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 |
size = PAGE_CACHE_SIZE; while (index < max_index) { /* Read the upcase table and copy it into the linear buffer. */ read_partial_upcase_page: page = ntfs_map_page(ino->i_mapping, index); if (IS_ERR(page)) goto iput_upcase_failed; memcpy((char*)vol->upcase + (index++ << PAGE_CACHE_SHIFT), page_address(page), size); ntfs_unmap_page(page); }; if (size == PAGE_CACHE_SIZE) { |
218357ff1 NTFS: - Use i_siz... |
1670 |
size = i_size & ~PAGE_CACHE_MASK; |
1da177e4c Linux-2.6.12-rc2 |
1671 1672 1673 |
if (size) goto read_partial_upcase_page; } |
218357ff1 NTFS: - Use i_siz... |
1674 |
vol->upcase_len = i_size >> UCHAR_T_SIZE_BITS; |
1da177e4c Linux-2.6.12-rc2 |
1675 |
ntfs_debug("Read %llu bytes from $UpCase (expected %zu bytes).", |
218357ff1 NTFS: - Use i_siz... |
1676 |
i_size, 64 * 1024 * sizeof(ntfschar)); |
1da177e4c Linux-2.6.12-rc2 |
1677 |
iput(ino); |
4e5e529ad NTFS: Semaphore t... |
1678 |
mutex_lock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
1679 1680 1681 |
if (!default_upcase) { ntfs_debug("Using volume specified $UpCase since default is " "not present."); |
4e5e529ad NTFS: Semaphore t... |
1682 |
mutex_unlock(&ntfs_lock); |
c49c31115 [PATCH] fs/ntfs: ... |
1683 |
return true; |
1da177e4c Linux-2.6.12-rc2 |
1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 |
} max = default_upcase_len; if (max > vol->upcase_len) max = vol->upcase_len; for (i = 0; i < max; i++) if (vol->upcase[i] != default_upcase[i]) break; if (i == max) { ntfs_free(vol->upcase); vol->upcase = default_upcase; vol->upcase_len = max; ntfs_nr_upcase_users++; |
4e5e529ad NTFS: Semaphore t... |
1696 |
mutex_unlock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
1697 1698 |
ntfs_debug("Volume specified $UpCase matches default. Using " "default."); |
c49c31115 [PATCH] fs/ntfs: ... |
1699 |
return true; |
1da177e4c Linux-2.6.12-rc2 |
1700 |
} |
4e5e529ad NTFS: Semaphore t... |
1701 |
mutex_unlock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
1702 1703 |
ntfs_debug("Using volume specified $UpCase since it does not match " "the default."); |
c49c31115 [PATCH] fs/ntfs: ... |
1704 |
return true; |
1da177e4c Linux-2.6.12-rc2 |
1705 1706 1707 1708 1709 |
iput_upcase_failed: iput(ino); ntfs_free(vol->upcase); vol->upcase = NULL; upcase_failed: |
4e5e529ad NTFS: Semaphore t... |
1710 |
mutex_lock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
1711 1712 1713 1714 |
if (default_upcase) { vol->upcase = default_upcase; vol->upcase_len = default_upcase_len; ntfs_nr_upcase_users++; |
4e5e529ad NTFS: Semaphore t... |
1715 |
mutex_unlock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
1716 1717 |
ntfs_error(sb, "Failed to load $UpCase from the volume. Using " "default."); |
c49c31115 [PATCH] fs/ntfs: ... |
1718 |
return true; |
1da177e4c Linux-2.6.12-rc2 |
1719 |
} |
4e5e529ad NTFS: Semaphore t... |
1720 |
mutex_unlock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
1721 |
ntfs_error(sb, "Failed to initialize upcase table."); |
c49c31115 [PATCH] fs/ntfs: ... |
1722 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
1723 |
} |
593453747 [PATCH] lockdep: ... |
1724 1725 1726 1727 1728 1729 1730 |
/* * The lcn and mft bitmap inodes are NTFS-internal inodes with * their own special locking rules: */ static struct lock_class_key lcnbmp_runlist_lock_key, lcnbmp_mrec_lock_key, mftbmp_runlist_lock_key, mftbmp_mrec_lock_key; |
1da177e4c Linux-2.6.12-rc2 |
1731 1732 1733 1734 1735 1736 1737 |
/** * load_system_files - open the system files using normal functions * @vol: ntfs super block describing device whose system files to load * * Open the system files with normal access functions and complete setting up * the ntfs super block @vol. * |
c49c31115 [PATCH] fs/ntfs: ... |
1738 |
* Return 'true' on success or 'false' on error. |
1da177e4c Linux-2.6.12-rc2 |
1739 |
*/ |
c49c31115 [PATCH] fs/ntfs: ... |
1740 |
static bool load_system_files(ntfs_volume *vol) |
1da177e4c Linux-2.6.12-rc2 |
1741 1742 1743 1744 1745 |
{ struct super_block *sb = vol->sb; MFT_RECORD *m; VOLUME_INFORMATION *vi; ntfs_attr_search_ctx *ctx; |
ca8fd7a0c NTFS: Detect the ... |
1746 |
#ifdef NTFS_RW |
7d333d6c7 NTFS: 2.1.24 rele... |
1747 |
RESTART_PAGE_HEADER *rp; |
ca8fd7a0c NTFS: Detect the ... |
1748 1749 |
int err; #endif /* NTFS_RW */ |
1da177e4c Linux-2.6.12-rc2 |
1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 |
ntfs_debug("Entering."); #ifdef NTFS_RW /* Get mft mirror inode compare the contents of $MFT and $MFTMirr. */ if (!load_and_init_mft_mirror(vol) || !check_mft_mirror(vol)) { static const char *es1 = "Failed to load $MFTMirr"; static const char *es2 = "$MFTMirr does not match $MFT"; static const char *es3 = ". Run ntfsfix and/or chkdsk."; /* If a read-write mount, convert it to a read-only mount. */ if (!(sb->s_flags & MS_RDONLY)) { if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO | ON_ERRORS_CONTINUE))) { ntfs_error(sb, "%s and neither on_errors=" "continue nor on_errors=" "remount-ro was specified%s", !vol->mftmirr_ino ? es1 : es2, es3); goto iput_mirr_err_out; } |
24a44dca3 [PATCH] ntfs: rem... |
1770 |
sb->s_flags |= MS_RDONLY; |
1da177e4c Linux-2.6.12-rc2 |
1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 |
ntfs_error(sb, "%s. Mounting read-only%s", !vol->mftmirr_ino ? es1 : es2, es3); } else ntfs_warning(sb, "%s. Will not be able to remount " "read-write%s", !vol->mftmirr_ino ? es1 : es2, es3); /* This will prevent a read-write remount. */ NVolSetErrors(vol); } #endif /* NTFS_RW */ /* Get mft bitmap attribute inode. */ vol->mftbmp_ino = ntfs_attr_iget(vol->mft_ino, AT_BITMAP, NULL, 0); if (IS_ERR(vol->mftbmp_ino)) { ntfs_error(sb, "Failed to load $MFT/$BITMAP attribute."); goto iput_mirr_err_out; } |
593453747 [PATCH] lockdep: ... |
1787 1788 1789 1790 |
lockdep_set_class(&NTFS_I(vol->mftbmp_ino)->runlist.lock, &mftbmp_runlist_lock_key); lockdep_set_class(&NTFS_I(vol->mftbmp_ino)->mrec_lock, &mftbmp_mrec_lock_key); |
1da177e4c Linux-2.6.12-rc2 |
1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 |
/* Read upcase table and setup @vol->upcase and @vol->upcase_len. */ if (!load_and_init_upcase(vol)) goto iput_mftbmp_err_out; #ifdef NTFS_RW /* * Read attribute definitions table and setup @vol->attrdef and * @vol->attrdef_size. */ if (!load_and_init_attrdef(vol)) goto iput_upcase_err_out; #endif /* NTFS_RW */ /* * Get the cluster allocation bitmap inode and verify the size, no * need for any locking at this stage as we are already running * exclusively as we are mount in progress task. */ vol->lcnbmp_ino = ntfs_iget(sb, FILE_Bitmap); if (IS_ERR(vol->lcnbmp_ino) || is_bad_inode(vol->lcnbmp_ino)) { if (!IS_ERR(vol->lcnbmp_ino)) iput(vol->lcnbmp_ino); goto bitmap_failed; } |
593453747 [PATCH] lockdep: ... |
1813 1814 1815 1816 |
lockdep_set_class(&NTFS_I(vol->lcnbmp_ino)->runlist.lock, &lcnbmp_runlist_lock_key); lockdep_set_class(&NTFS_I(vol->lcnbmp_ino)->mrec_lock, &lcnbmp_mrec_lock_key); |
c002f4254 NTFS: - Add disab... |
1817 |
NInoSetSparseDisabled(NTFS_I(vol->lcnbmp_ino)); |
218357ff1 NTFS: - Use i_siz... |
1818 |
if ((vol->nr_clusters + 7) >> 3 > i_size_read(vol->lcnbmp_ino)) { |
1da177e4c Linux-2.6.12-rc2 |
1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 |
iput(vol->lcnbmp_ino); bitmap_failed: ntfs_error(sb, "Failed to load $Bitmap."); goto iput_attrdef_err_out; } /* * Get the volume inode and setup our cache of the volume flags and * version. */ vol->vol_ino = ntfs_iget(sb, FILE_Volume); if (IS_ERR(vol->vol_ino) || is_bad_inode(vol->vol_ino)) { if (!IS_ERR(vol->vol_ino)) iput(vol->vol_ino); volume_failed: ntfs_error(sb, "Failed to load $Volume."); goto iput_lcnbmp_err_out; } m = map_mft_record(NTFS_I(vol->vol_ino)); if (IS_ERR(m)) { iput_volume_failed: iput(vol->vol_ino); goto volume_failed; } if (!(ctx = ntfs_attr_get_search_ctx(NTFS_I(vol->vol_ino), m))) { ntfs_error(sb, "Failed to get attribute search context."); goto get_ctx_vol_failed; } if (ntfs_attr_lookup(AT_VOLUME_INFORMATION, NULL, 0, 0, 0, NULL, 0, ctx) || ctx->attr->non_resident || ctx->attr->flags) { err_put_vol: ntfs_attr_put_search_ctx(ctx); get_ctx_vol_failed: unmap_mft_record(NTFS_I(vol->vol_ino)); goto iput_volume_failed; } vi = (VOLUME_INFORMATION*)((char*)ctx->attr + le16_to_cpu(ctx->attr->data.resident.value_offset)); /* Some bounds checks. */ if ((u8*)vi < (u8*)ctx->attr || (u8*)vi + le32_to_cpu(ctx->attr->data.resident.value_length) > (u8*)ctx->attr + le32_to_cpu(ctx->attr->length)) goto err_put_vol; /* Copy the volume flags and version to the ntfs_volume structure. */ vol->vol_flags = vi->flags; vol->major_ver = vi->major_ver; vol->minor_ver = vi->minor_ver; ntfs_attr_put_search_ctx(ctx); unmap_mft_record(NTFS_I(vol->vol_ino)); printk(KERN_INFO "NTFS volume version %i.%i. ", vol->major_ver, vol->minor_ver); |
c002f4254 NTFS: - Add disab... |
1870 1871 1872 1873 1874 1875 |
if (vol->major_ver < 3 && NVolSparseEnabled(vol)) { ntfs_warning(vol->sb, "Disabling sparse support due to NTFS " "volume version %i.%i (need at least version " "3.0).", vol->major_ver, vol->minor_ver); NVolClearSparseEnabled(vol); } |
1da177e4c Linux-2.6.12-rc2 |
1876 1877 1878 1879 |
#ifdef NTFS_RW /* Make sure that no unsupported volume flags are set. */ if (vol->vol_flags & VOLUME_MUST_MOUNT_RO_MASK) { static const char *es1a = "Volume is dirty"; |
1cf3109ff NTFS: Do more det... |
1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 |
static const char *es1b = "Volume has been modified by chkdsk"; static const char *es1c = "Volume has unsupported flags set"; static const char *es2a = ". Run chkdsk and mount in Windows."; static const char *es2b = ". Mount in Windows."; const char *es1, *es2; es2 = es2a; if (vol->vol_flags & VOLUME_IS_DIRTY) es1 = es1a; else if (vol->vol_flags & VOLUME_MODIFIED_BY_CHKDSK) { es1 = es1b; es2 = es2b; } else { es1 = es1c; ntfs_warning(sb, "Unsupported volume flags 0x%x " "encountered.", (unsigned)le16_to_cpu(vol->vol_flags)); } |
1da177e4c Linux-2.6.12-rc2 |
1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 |
/* If a read-write mount, convert it to a read-only mount. */ if (!(sb->s_flags & MS_RDONLY)) { if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO | ON_ERRORS_CONTINUE))) { ntfs_error(sb, "%s and neither on_errors=" "continue nor on_errors=" "remount-ro was specified%s", es1, es2); goto iput_vol_err_out; } |
24a44dca3 [PATCH] ntfs: rem... |
1908 |
sb->s_flags |= MS_RDONLY; |
1da177e4c Linux-2.6.12-rc2 |
1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 |
ntfs_error(sb, "%s. Mounting read-only%s", es1, es2); } else ntfs_warning(sb, "%s. Will not be able to remount " "read-write%s", es1, es2); /* * Do not set NVolErrors() because ntfs_remount() re-checks the * flags which we need to do in case any flags have changed. */ } /* * Get the inode for the logfile, check it and determine if the volume * was shutdown cleanly. */ |
e7a1033b9 NTFS: Support mor... |
1922 1923 1924 |
rp = NULL; if (!load_and_check_logfile(vol, &rp) || !ntfs_is_logfile_clean(vol->logfile_ino, rp)) { |
1da177e4c Linux-2.6.12-rc2 |
1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 |
static const char *es1a = "Failed to load $LogFile"; static const char *es1b = "$LogFile is not clean"; static const char *es2 = ". Mount in Windows."; const char *es1; es1 = !vol->logfile_ino ? es1a : es1b; /* If a read-write mount, convert it to a read-only mount. */ if (!(sb->s_flags & MS_RDONLY)) { if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO | ON_ERRORS_CONTINUE))) { ntfs_error(sb, "%s and neither on_errors=" "continue nor on_errors=" "remount-ro was specified%s", es1, es2); |
e7a1033b9 NTFS: Support mor... |
1939 1940 1941 1942 |
if (vol->logfile_ino) { BUG_ON(!rp); ntfs_free(rp); } |
1da177e4c Linux-2.6.12-rc2 |
1943 1944 |
goto iput_logfile_err_out; } |
24a44dca3 [PATCH] ntfs: rem... |
1945 |
sb->s_flags |= MS_RDONLY; |
1da177e4c Linux-2.6.12-rc2 |
1946 1947 1948 1949 1950 1951 1952 |
ntfs_error(sb, "%s. Mounting read-only%s", es1, es2); } else ntfs_warning(sb, "%s. Will not be able to remount " "read-write%s", es1, es2); /* This will prevent a read-write remount. */ NVolSetErrors(vol); } |
e7a1033b9 NTFS: Support mor... |
1953 |
ntfs_free(rp); |
ca8fd7a0c NTFS: Detect the ... |
1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 |
#endif /* NTFS_RW */ /* Get the root directory inode so we can do path lookups. */ vol->root_ino = ntfs_iget(sb, FILE_root); if (IS_ERR(vol->root_ino) || is_bad_inode(vol->root_ino)) { if (!IS_ERR(vol->root_ino)) iput(vol->root_ino); ntfs_error(sb, "Failed to load root directory."); goto iput_logfile_err_out; } #ifdef NTFS_RW /* * Check if Windows is suspended to disk on the target volume. If it * is hibernated, we must not write *anything* to the disk so set * NVolErrors() without setting the dirty volume flag and mount * read-only. This will prevent read-write remounting and it will also * prevent all writes. */ err = check_windows_hibernation_status(vol); if (unlikely(err)) { static const char *es1a = "Failed to determine if Windows is " "hibernated"; static const char *es1b = "Windows is hibernated"; static const char *es2 = ". Run chkdsk."; const char *es1; es1 = err < 0 ? es1a : es1b; /* If a read-write mount, convert it to a read-only mount. */ if (!(sb->s_flags & MS_RDONLY)) { if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO | ON_ERRORS_CONTINUE))) { ntfs_error(sb, "%s and neither on_errors=" "continue nor on_errors=" "remount-ro was specified%s", es1, es2); goto iput_root_err_out; } |
24a44dca3 [PATCH] ntfs: rem... |
1990 |
sb->s_flags |= MS_RDONLY; |
ca8fd7a0c NTFS: Detect the ... |
1991 1992 1993 1994 1995 1996 1997 |
ntfs_error(sb, "%s. Mounting read-only%s", es1, es2); } else ntfs_warning(sb, "%s. Will not be able to remount " "read-write%s", es1, es2); /* This will prevent a read-write remount. */ NVolSetErrors(vol); } |
1da177e4c Linux-2.6.12-rc2 |
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 |
/* If (still) a read-write mount, mark the volume dirty. */ if (!(sb->s_flags & MS_RDONLY) && ntfs_set_volume_flags(vol, VOLUME_IS_DIRTY)) { static const char *es1 = "Failed to set dirty bit in volume " "information flags"; static const char *es2 = ". Run chkdsk."; /* Convert to a read-only mount. */ if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO | ON_ERRORS_CONTINUE))) { ntfs_error(sb, "%s and neither on_errors=continue nor " "on_errors=remount-ro was specified%s", es1, es2); |
ca8fd7a0c NTFS: Detect the ... |
2011 |
goto iput_root_err_out; |
1da177e4c Linux-2.6.12-rc2 |
2012 2013 |
} ntfs_error(sb, "%s. Mounting read-only%s", es1, es2); |
24a44dca3 [PATCH] ntfs: rem... |
2014 |
sb->s_flags |= MS_RDONLY; |
1da177e4c Linux-2.6.12-rc2 |
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 |
/* * Do not set NVolErrors() because ntfs_remount() might manage * to set the dirty flag in which case all would be well. */ } #if 0 // TODO: Enable this code once we start modifying anything that is // different between NTFS 1.2 and 3.x... /* * If (still) a read-write mount, set the NT4 compatibility flag on * newer NTFS version volumes. */ if (!(sb->s_flags & MS_RDONLY) && (vol->major_ver > 1) && ntfs_set_volume_flags(vol, VOLUME_MOUNTED_ON_NT4)) { static const char *es1 = "Failed to set NT4 compatibility flag"; static const char *es2 = ". Run chkdsk."; /* Convert to a read-only mount. */ if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO | ON_ERRORS_CONTINUE))) { ntfs_error(sb, "%s and neither on_errors=continue nor " "on_errors=remount-ro was specified%s", es1, es2); |
ca8fd7a0c NTFS: Detect the ... |
2038 |
goto iput_root_err_out; |
1da177e4c Linux-2.6.12-rc2 |
2039 2040 |
} ntfs_error(sb, "%s. Mounting read-only%s", es1, es2); |
24a44dca3 [PATCH] ntfs: rem... |
2041 |
sb->s_flags |= MS_RDONLY; |
1da177e4c Linux-2.6.12-rc2 |
2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 2053 2054 2055 2056 |
NVolSetErrors(vol); } #endif /* If (still) a read-write mount, empty the logfile. */ if (!(sb->s_flags & MS_RDONLY) && !ntfs_empty_logfile(vol->logfile_ino)) { static const char *es1 = "Failed to empty $LogFile"; static const char *es2 = ". Mount in Windows."; /* Convert to a read-only mount. */ if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO | ON_ERRORS_CONTINUE))) { ntfs_error(sb, "%s and neither on_errors=continue nor " "on_errors=remount-ro was specified%s", es1, es2); |
ca8fd7a0c NTFS: Detect the ... |
2057 |
goto iput_root_err_out; |
1da177e4c Linux-2.6.12-rc2 |
2058 2059 |
} ntfs_error(sb, "%s. Mounting read-only%s", es1, es2); |
24a44dca3 [PATCH] ntfs: rem... |
2060 |
sb->s_flags |= MS_RDONLY; |
1da177e4c Linux-2.6.12-rc2 |
2061 2062 2063 |
NVolSetErrors(vol); } #endif /* NTFS_RW */ |
1da177e4c Linux-2.6.12-rc2 |
2064 |
/* If on NTFS versions before 3.0, we are done. */ |
3f2faef00 NTFS: Stamp the t... |
2065 |
if (unlikely(vol->major_ver < 3)) |
c49c31115 [PATCH] fs/ntfs: ... |
2066 |
return true; |
1da177e4c Linux-2.6.12-rc2 |
2067 2068 2069 2070 2071 2072 2073 2074 2075 |
/* NTFS 3.0+ specific initialization. */ /* Get the security descriptors inode. */ vol->secure_ino = ntfs_iget(sb, FILE_Secure); if (IS_ERR(vol->secure_ino) || is_bad_inode(vol->secure_ino)) { if (!IS_ERR(vol->secure_ino)) iput(vol->secure_ino); ntfs_error(sb, "Failed to load $Secure."); goto iput_root_err_out; } |
3f2faef00 NTFS: Stamp the t... |
2076 |
// TODO: Initialize security. |
1da177e4c Linux-2.6.12-rc2 |
2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 |
/* Get the extended system files' directory inode. */ vol->extend_ino = ntfs_iget(sb, FILE_Extend); if (IS_ERR(vol->extend_ino) || is_bad_inode(vol->extend_ino)) { if (!IS_ERR(vol->extend_ino)) iput(vol->extend_ino); ntfs_error(sb, "Failed to load $Extend."); goto iput_sec_err_out; } #ifdef NTFS_RW /* Find the quota file, load it if present, and set it up. */ if (!load_and_init_quota(vol)) { static const char *es1 = "Failed to load $Quota"; static const char *es2 = ". Run chkdsk."; /* If a read-write mount, convert it to a read-only mount. */ if (!(sb->s_flags & MS_RDONLY)) { if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO | ON_ERRORS_CONTINUE))) { ntfs_error(sb, "%s and neither on_errors=" "continue nor on_errors=" "remount-ro was specified%s", es1, es2); goto iput_quota_err_out; } |
24a44dca3 [PATCH] ntfs: rem... |
2101 |
sb->s_flags |= MS_RDONLY; |
1da177e4c Linux-2.6.12-rc2 |
2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 |
ntfs_error(sb, "%s. Mounting read-only%s", es1, es2); } else ntfs_warning(sb, "%s. Will not be able to remount " "read-write%s", es1, es2); /* This will prevent a read-write remount. */ NVolSetErrors(vol); } /* If (still) a read-write mount, mark the quotas out of date. */ if (!(sb->s_flags & MS_RDONLY) && !ntfs_mark_quotas_out_of_date(vol)) { static const char *es1 = "Failed to mark quotas out of date"; static const char *es2 = ". Run chkdsk."; /* Convert to a read-only mount. */ if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO | ON_ERRORS_CONTINUE))) { ntfs_error(sb, "%s and neither on_errors=continue nor " "on_errors=remount-ro was specified%s", es1, es2); goto iput_quota_err_out; } ntfs_error(sb, "%s. Mounting read-only%s", es1, es2); |
24a44dca3 [PATCH] ntfs: rem... |
2124 |
sb->s_flags |= MS_RDONLY; |
1da177e4c Linux-2.6.12-rc2 |
2125 2126 |
NVolSetErrors(vol); } |
3f2faef00 NTFS: Stamp the t... |
2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 |
/* * Find the transaction log file ($UsnJrnl), load it if present, check * it, and set it up. */ if (!load_and_init_usnjrnl(vol)) { static const char *es1 = "Failed to load $UsnJrnl"; static const char *es2 = ". Run chkdsk."; /* If a read-write mount, convert it to a read-only mount. */ if (!(sb->s_flags & MS_RDONLY)) { if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO | ON_ERRORS_CONTINUE))) { ntfs_error(sb, "%s and neither on_errors=" "continue nor on_errors=" "remount-ro was specified%s", es1, es2); goto iput_usnjrnl_err_out; } |
24a44dca3 [PATCH] ntfs: rem... |
2145 |
sb->s_flags |= MS_RDONLY; |
3f2faef00 NTFS: Stamp the t... |
2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 |
ntfs_error(sb, "%s. Mounting read-only%s", es1, es2); } else ntfs_warning(sb, "%s. Will not be able to remount " "read-write%s", es1, es2); /* This will prevent a read-write remount. */ NVolSetErrors(vol); } /* If (still) a read-write mount, stamp the transaction log. */ if (!(sb->s_flags & MS_RDONLY) && !ntfs_stamp_usnjrnl(vol)) { static const char *es1 = "Failed to stamp transaction log " "($UsnJrnl)"; static const char *es2 = ". Run chkdsk."; /* Convert to a read-only mount. */ if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO | ON_ERRORS_CONTINUE))) { ntfs_error(sb, "%s and neither on_errors=continue nor " "on_errors=remount-ro was specified%s", es1, es2); goto iput_usnjrnl_err_out; } ntfs_error(sb, "%s. Mounting read-only%s", es1, es2); |
24a44dca3 [PATCH] ntfs: rem... |
2168 |
sb->s_flags |= MS_RDONLY; |
3f2faef00 NTFS: Stamp the t... |
2169 2170 |
NVolSetErrors(vol); } |
1da177e4c Linux-2.6.12-rc2 |
2171 |
#endif /* NTFS_RW */ |
c49c31115 [PATCH] fs/ntfs: ... |
2172 |
return true; |
1da177e4c Linux-2.6.12-rc2 |
2173 |
#ifdef NTFS_RW |
3f2faef00 NTFS: Stamp the t... |
2174 2175 2176 2177 2178 2179 2180 |
iput_usnjrnl_err_out: if (vol->usnjrnl_j_ino) iput(vol->usnjrnl_j_ino); if (vol->usnjrnl_max_ino) iput(vol->usnjrnl_max_ino); if (vol->usnjrnl_ino) iput(vol->usnjrnl_ino); |
1da177e4c Linux-2.6.12-rc2 |
2181 2182 2183 2184 2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 2204 2205 2206 2207 2208 2209 2210 |
iput_quota_err_out: if (vol->quota_q_ino) iput(vol->quota_q_ino); if (vol->quota_ino) iput(vol->quota_ino); iput(vol->extend_ino); #endif /* NTFS_RW */ iput_sec_err_out: iput(vol->secure_ino); iput_root_err_out: iput(vol->root_ino); iput_logfile_err_out: #ifdef NTFS_RW if (vol->logfile_ino) iput(vol->logfile_ino); iput_vol_err_out: #endif /* NTFS_RW */ iput(vol->vol_ino); iput_lcnbmp_err_out: iput(vol->lcnbmp_ino); iput_attrdef_err_out: vol->attrdef_size = 0; if (vol->attrdef) { ntfs_free(vol->attrdef); vol->attrdef = NULL; } #ifdef NTFS_RW iput_upcase_err_out: #endif /* NTFS_RW */ vol->upcase_len = 0; |
4e5e529ad NTFS: Semaphore t... |
2211 |
mutex_lock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
2212 2213 2214 2215 |
if (vol->upcase == default_upcase) { ntfs_nr_upcase_users--; vol->upcase = NULL; } |
4e5e529ad NTFS: Semaphore t... |
2216 |
mutex_unlock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
2217 2218 2219 2220 2221 2222 2223 2224 2225 2226 2227 |
if (vol->upcase) { ntfs_free(vol->upcase); vol->upcase = NULL; } iput_mftbmp_err_out: iput(vol->mftbmp_ino); iput_mirr_err_out: #ifdef NTFS_RW if (vol->mftmirr_ino) iput(vol->mftmirr_ino); #endif /* NTFS_RW */ |
c49c31115 [PATCH] fs/ntfs: ... |
2228 |
return false; |
1da177e4c Linux-2.6.12-rc2 |
2229 2230 2231 2232 2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 |
} /** * ntfs_put_super - called by the vfs to unmount a volume * @sb: vfs superblock of volume to unmount * * ntfs_put_super() is called by the VFS (from fs/super.c::do_umount()) when * the volume is being unmounted (umount system call has been invoked) and it * releases all inodes and memory belonging to the NTFS specific part of the * super block. */ static void ntfs_put_super(struct super_block *sb) { ntfs_volume *vol = NTFS_SB(sb); ntfs_debug("Entering."); |
6cfd01484 push BKL down int... |
2245 |
|
1da177e4c Linux-2.6.12-rc2 |
2246 2247 2248 2249 2250 2251 2252 2253 2254 |
#ifdef NTFS_RW /* * Commit all inodes while they are still open in case some of them * cause others to be dirtied. */ ntfs_commit_inode(vol->vol_ino); /* NTFS 3.0+ specific. */ if (vol->major_ver >= 3) { |
3f2faef00 NTFS: Stamp the t... |
2255 2256 2257 2258 2259 2260 |
if (vol->usnjrnl_j_ino) ntfs_commit_inode(vol->usnjrnl_j_ino); if (vol->usnjrnl_max_ino) ntfs_commit_inode(vol->usnjrnl_max_ino); if (vol->usnjrnl_ino) ntfs_commit_inode(vol->usnjrnl_ino); |
1da177e4c Linux-2.6.12-rc2 |
2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 |
if (vol->quota_q_ino) ntfs_commit_inode(vol->quota_q_ino); if (vol->quota_ino) ntfs_commit_inode(vol->quota_ino); if (vol->extend_ino) ntfs_commit_inode(vol->extend_ino); if (vol->secure_ino) ntfs_commit_inode(vol->secure_ino); } ntfs_commit_inode(vol->root_ino); down_write(&vol->lcnbmp_lock); ntfs_commit_inode(vol->lcnbmp_ino); up_write(&vol->lcnbmp_lock); down_write(&vol->mftbmp_lock); ntfs_commit_inode(vol->mftbmp_ino); up_write(&vol->mftbmp_lock); if (vol->logfile_ino) ntfs_commit_inode(vol->logfile_ino); if (vol->mftmirr_ino) ntfs_commit_inode(vol->mftmirr_ino); ntfs_commit_inode(vol->mft_ino); /* |
25985edce Fix common misspe... |
2289 |
* If a read-write mount and no volume errors have occurred, mark the |
1da177e4c Linux-2.6.12-rc2 |
2290 2291 2292 2293 2294 2295 2296 2297 2298 2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 |
* volume clean. Also, re-commit all affected inodes. */ if (!(sb->s_flags & MS_RDONLY)) { if (!NVolErrors(vol)) { if (ntfs_clear_volume_flags(vol, VOLUME_IS_DIRTY)) ntfs_warning(sb, "Failed to clear dirty bit " "in volume information " "flags. Run chkdsk."); ntfs_commit_inode(vol->vol_ino); ntfs_commit_inode(vol->root_ino); if (vol->mftmirr_ino) ntfs_commit_inode(vol->mftmirr_ino); ntfs_commit_inode(vol->mft_ino); } else { ntfs_warning(sb, "Volume has errors. Leaving volume " "marked dirty. Run chkdsk."); } } #endif /* NTFS_RW */ iput(vol->vol_ino); vol->vol_ino = NULL; /* NTFS 3.0+ specific clean up. */ if (vol->major_ver >= 3) { #ifdef NTFS_RW |
3f2faef00 NTFS: Stamp the t... |
2316 2317 2318 2319 2320 2321 2322 2323 2324 2325 2326 2327 |
if (vol->usnjrnl_j_ino) { iput(vol->usnjrnl_j_ino); vol->usnjrnl_j_ino = NULL; } if (vol->usnjrnl_max_ino) { iput(vol->usnjrnl_max_ino); vol->usnjrnl_max_ino = NULL; } if (vol->usnjrnl_ino) { iput(vol->usnjrnl_ino); vol->usnjrnl_ino = NULL; } |
1da177e4c Linux-2.6.12-rc2 |
2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 |
if (vol->quota_q_ino) { iput(vol->quota_q_ino); vol->quota_q_ino = NULL; } if (vol->quota_ino) { iput(vol->quota_ino); vol->quota_ino = NULL; } #endif /* NTFS_RW */ if (vol->extend_ino) { iput(vol->extend_ino); vol->extend_ino = NULL; } if (vol->secure_ino) { iput(vol->secure_ino); vol->secure_ino = NULL; } } iput(vol->root_ino); vol->root_ino = NULL; down_write(&vol->lcnbmp_lock); iput(vol->lcnbmp_ino); vol->lcnbmp_ino = NULL; up_write(&vol->lcnbmp_lock); down_write(&vol->mftbmp_lock); iput(vol->mftbmp_ino); vol->mftbmp_ino = NULL; up_write(&vol->mftbmp_lock); #ifdef NTFS_RW if (vol->logfile_ino) { iput(vol->logfile_ino); vol->logfile_ino = NULL; } if (vol->mftmirr_ino) { /* Re-commit the mft mirror and mft just in case. */ ntfs_commit_inode(vol->mftmirr_ino); ntfs_commit_inode(vol->mft_ino); iput(vol->mftmirr_ino); vol->mftmirr_ino = NULL; } /* |
13205fb92 ntfs: remove old ... |
2373 2374 2375 |
* We should have no dirty inodes left, due to * mft.c::ntfs_mft_writepage() cleaning all the dirty pages as * the underlying mft records are written out and cleaned. |
1da177e4c Linux-2.6.12-rc2 |
2376 2377 2378 |
*/ ntfs_commit_inode(vol->mft_ino); write_inode_now(vol->mft_ino, 1); |
1da177e4c Linux-2.6.12-rc2 |
2379 2380 2381 2382 2383 2384 2385 2386 2387 2388 2389 2390 2391 2392 2393 2394 |
#endif /* NTFS_RW */ iput(vol->mft_ino); vol->mft_ino = NULL; /* Throw away the table of attribute definitions. */ vol->attrdef_size = 0; if (vol->attrdef) { ntfs_free(vol->attrdef); vol->attrdef = NULL; } vol->upcase_len = 0; /* * Destroy the global default upcase table if necessary. Also decrease * the number of upcase users if we are a user. */ |
4e5e529ad NTFS: Semaphore t... |
2395 |
mutex_lock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 |
if (vol->upcase == default_upcase) { ntfs_nr_upcase_users--; vol->upcase = NULL; } if (!ntfs_nr_upcase_users && default_upcase) { ntfs_free(default_upcase); default_upcase = NULL; } if (vol->cluster_size <= 4096 && !--ntfs_nr_compression_users) free_compression_buffers(); |
4e5e529ad NTFS: Semaphore t... |
2406 |
mutex_unlock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
2407 2408 2409 2410 |
if (vol->upcase) { ntfs_free(vol->upcase); vol->upcase = NULL; } |
6d729e44a fs: Make unload_n... |
2411 2412 |
unload_nls(vol->nls_map); |
1da177e4c Linux-2.6.12-rc2 |
2413 2414 |
sb->s_fs_info = NULL; kfree(vol); |
1da177e4c Linux-2.6.12-rc2 |
2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 |
} /** * get_nr_free_clusters - return the number of free clusters on a volume * @vol: ntfs volume for which to obtain free cluster count * * Calculate the number of free clusters on the mounted NTFS volume @vol. We * actually calculate the number of clusters in use instead because this * allows us to not care about partial pages as these will be just zero filled * and hence not be counted as allocated clusters. * * The only particularity is that clusters beyond the end of the logical ntfs * volume will be marked as allocated to prevent errors which means we have to * discount those at the end. This is important as the cluster bitmap always * has a size in multiples of 8 bytes, i.e. up to 63 clusters could be outside * the logical volume and marked in use when they are not as they do not exist. * * If any pages cannot be read we assume all clusters in the erroring pages are * in use. This means we return an underestimate on errors which is better than * an overestimate. */ static s64 get_nr_free_clusters(ntfs_volume *vol) { s64 nr_free = vol->nr_clusters; |
1da177e4c Linux-2.6.12-rc2 |
2439 |
struct address_space *mapping = vol->lcnbmp_ino->i_mapping; |
1da177e4c Linux-2.6.12-rc2 |
2440 |
struct page *page; |
218357ff1 NTFS: - Use i_siz... |
2441 |
pgoff_t index, max_index; |
1da177e4c Linux-2.6.12-rc2 |
2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 |
ntfs_debug("Entering."); /* Serialize accesses to the cluster bitmap. */ down_read(&vol->lcnbmp_lock); /* * Convert the number of bits into bytes rounded up, then convert into * multiples of PAGE_CACHE_SIZE, rounding up so that if we have one * full and one partial page max_index = 2. */ max_index = (((vol->nr_clusters + 7) >> 3) + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; |
218357ff1 NTFS: - Use i_siz... |
2453 2454 2455 2456 |
/* Use multiples of 4 bytes, thus max_size is PAGE_CACHE_SIZE / 4. */ ntfs_debug("Reading $Bitmap, max_index = 0x%lx, max_size = 0x%lx.", max_index, PAGE_CACHE_SIZE / 4); for (index = 0; index < max_index; index++) { |
c4af96449 ntfs: use bitmap_... |
2457 |
unsigned long *kaddr; |
1da177e4c Linux-2.6.12-rc2 |
2458 2459 2460 2461 |
/* * Read the page from page cache, getting it from backing store * if necessary, and increment the use count. */ |
6fe6900e1 mm: make read_cac... |
2462 |
page = read_mapping_page(mapping, index, NULL); |
1da177e4c Linux-2.6.12-rc2 |
2463 2464 |
/* Ignore pages which errored synchronously. */ if (IS_ERR(page)) { |
6fe6900e1 mm: make read_cac... |
2465 |
ntfs_debug("read_mapping_page() error. Skipping " |
1da177e4c Linux-2.6.12-rc2 |
2466 2467 2468 2469 |
"page (index 0x%lx).", index); nr_free -= PAGE_CACHE_SIZE * 8; continue; } |
c4af96449 ntfs: use bitmap_... |
2470 |
kaddr = kmap_atomic(page, KM_USER0); |
1da177e4c Linux-2.6.12-rc2 |
2471 |
/* |
c4af96449 ntfs: use bitmap_... |
2472 |
* Subtract the number of set bits. If this |
1da177e4c Linux-2.6.12-rc2 |
2473 2474 2475 2476 2477 |
* is the last page and it is partial we don't really care as * it just means we do a little extra work but it won't affect * the result as all out of range bytes are set to zero by * ntfs_readpage(). */ |
c4af96449 ntfs: use bitmap_... |
2478 2479 |
nr_free -= bitmap_weight(kaddr, PAGE_CACHE_SIZE * BITS_PER_BYTE); |
1da177e4c Linux-2.6.12-rc2 |
2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 |
kunmap_atomic(kaddr, KM_USER0); page_cache_release(page); } ntfs_debug("Finished reading $Bitmap, last index = 0x%lx.", index - 1); /* * Fixup for eventual bits outside logical ntfs volume (see function * description above). */ if (vol->nr_clusters & 63) nr_free += 64 - (vol->nr_clusters & 63); up_read(&vol->lcnbmp_lock); |
25985edce Fix common misspe... |
2491 |
/* If errors occurred we may well have gone below zero, fix this. */ |
1da177e4c Linux-2.6.12-rc2 |
2492 2493 2494 2495 2496 2497 2498 2499 2500 |
if (nr_free < 0) nr_free = 0; ntfs_debug("Exiting."); return nr_free; } /** * __get_nr_free_mft_records - return the number of free inodes on a volume * @vol: ntfs volume for which to obtain free inode count |
c002f4254 NTFS: - Add disab... |
2501 |
* @nr_free: number of mft records in filesystem |
218357ff1 NTFS: - Use i_siz... |
2502 |
* @max_index: maximum number of pages containing set bits |
1da177e4c Linux-2.6.12-rc2 |
2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 |
* * Calculate the number of free mft records (inodes) on the mounted NTFS * volume @vol. We actually calculate the number of mft records in use instead * because this allows us to not care about partial pages as these will be just * zero filled and hence not be counted as allocated mft record. * * If any pages cannot be read we assume all mft records in the erroring pages * are in use. This means we return an underestimate on errors which is better * than an overestimate. * * NOTE: Caller must hold mftbmp_lock rw_semaphore for reading or writing. */ |
218357ff1 NTFS: - Use i_siz... |
2515 2516 |
static unsigned long __get_nr_free_mft_records(ntfs_volume *vol, s64 nr_free, const pgoff_t max_index) |
1da177e4c Linux-2.6.12-rc2 |
2517 |
{ |
1da177e4c Linux-2.6.12-rc2 |
2518 |
struct address_space *mapping = vol->mftbmp_ino->i_mapping; |
1da177e4c Linux-2.6.12-rc2 |
2519 |
struct page *page; |
218357ff1 NTFS: - Use i_siz... |
2520 |
pgoff_t index; |
1da177e4c Linux-2.6.12-rc2 |
2521 2522 |
ntfs_debug("Entering."); |
218357ff1 NTFS: - Use i_siz... |
2523 |
/* Use multiples of 4 bytes, thus max_size is PAGE_CACHE_SIZE / 4. */ |
1da177e4c Linux-2.6.12-rc2 |
2524 |
ntfs_debug("Reading $MFT/$BITMAP, max_index = 0x%lx, max_size = " |
218357ff1 NTFS: - Use i_siz... |
2525 2526 |
"0x%lx.", max_index, PAGE_CACHE_SIZE / 4); for (index = 0; index < max_index; index++) { |
c4af96449 ntfs: use bitmap_... |
2527 |
unsigned long *kaddr; |
1da177e4c Linux-2.6.12-rc2 |
2528 2529 2530 2531 |
/* * Read the page from page cache, getting it from backing store * if necessary, and increment the use count. */ |
6fe6900e1 mm: make read_cac... |
2532 |
page = read_mapping_page(mapping, index, NULL); |
1da177e4c Linux-2.6.12-rc2 |
2533 2534 |
/* Ignore pages which errored synchronously. */ if (IS_ERR(page)) { |
6fe6900e1 mm: make read_cac... |
2535 |
ntfs_debug("read_mapping_page() error. Skipping " |
1da177e4c Linux-2.6.12-rc2 |
2536 |
"page (index 0x%lx).", index); |
1da177e4c Linux-2.6.12-rc2 |
2537 2538 2539 |
nr_free -= PAGE_CACHE_SIZE * 8; continue; } |
c4af96449 ntfs: use bitmap_... |
2540 |
kaddr = kmap_atomic(page, KM_USER0); |
1da177e4c Linux-2.6.12-rc2 |
2541 |
/* |
c4af96449 ntfs: use bitmap_... |
2542 |
* Subtract the number of set bits. If this |
1da177e4c Linux-2.6.12-rc2 |
2543 2544 2545 2546 2547 |
* is the last page and it is partial we don't really care as * it just means we do a little extra work but it won't affect * the result as all out of range bytes are set to zero by * ntfs_readpage(). */ |
c4af96449 ntfs: use bitmap_... |
2548 2549 |
nr_free -= bitmap_weight(kaddr, PAGE_CACHE_SIZE * BITS_PER_BYTE); |
1da177e4c Linux-2.6.12-rc2 |
2550 2551 2552 2553 2554 |
kunmap_atomic(kaddr, KM_USER0); page_cache_release(page); } ntfs_debug("Finished reading $MFT/$BITMAP, last index = 0x%lx.", index - 1); |
25985edce Fix common misspe... |
2555 |
/* If errors occurred we may well have gone below zero, fix this. */ |
1da177e4c Linux-2.6.12-rc2 |
2556 2557 2558 2559 2560 2561 2562 2563 |
if (nr_free < 0) nr_free = 0; ntfs_debug("Exiting."); return nr_free; } /** * ntfs_statfs - return information about mounted NTFS volume |
726c33422 [PATCH] VFS: Perm... |
2564 |
* @dentry: dentry from mounted volume |
1da177e4c Linux-2.6.12-rc2 |
2565 2566 |
* @sfs: statfs structure in which to return the information * |
726c33422 [PATCH] VFS: Perm... |
2567 |
* Return information about the mounted NTFS volume @dentry in the statfs structure |
1da177e4c Linux-2.6.12-rc2 |
2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 |
* pointed to by @sfs (this is initialized with zeros before ntfs_statfs is * called). We interpret the values to be correct of the moment in time at * which we are called. Most values are variable otherwise and this isn't just * the free values but the totals as well. For example we can increase the * total number of file nodes if we run out and we can keep doing this until * there is no more space on the volume left at all. * * Called from vfs_statfs which is used to handle the statfs, fstatfs, and * ustat system calls. * * Return 0 on success or -errno on error. */ |
726c33422 [PATCH] VFS: Perm... |
2580 |
static int ntfs_statfs(struct dentry *dentry, struct kstatfs *sfs) |
1da177e4c Linux-2.6.12-rc2 |
2581 |
{ |
726c33422 [PATCH] VFS: Perm... |
2582 |
struct super_block *sb = dentry->d_sb; |
1da177e4c Linux-2.6.12-rc2 |
2583 |
s64 size; |
218357ff1 NTFS: - Use i_siz... |
2584 2585 2586 2587 |
ntfs_volume *vol = NTFS_SB(sb); ntfs_inode *mft_ni = NTFS_I(vol->mft_ino); pgoff_t max_index; unsigned long flags; |
1da177e4c Linux-2.6.12-rc2 |
2588 2589 2590 2591 2592 2593 2594 |
ntfs_debug("Entering."); /* Type of filesystem. */ sfs->f_type = NTFS_SB_MAGIC; /* Optimal transfer block size. */ sfs->f_bsize = PAGE_CACHE_SIZE; /* |
c002f4254 NTFS: - Add disab... |
2595 |
* Total data blocks in filesystem in units of f_bsize and since |
1da177e4c Linux-2.6.12-rc2 |
2596 2597 2598 2599 2600 |
* inodes are also stored in data blocs ($MFT is a file) this is just * the total clusters. */ sfs->f_blocks = vol->nr_clusters << vol->cluster_size_bits >> PAGE_CACHE_SHIFT; |
c002f4254 NTFS: - Add disab... |
2601 |
/* Free data blocks in filesystem in units of f_bsize. */ |
1da177e4c Linux-2.6.12-rc2 |
2602 2603 2604 2605 2606 2607 2608 2609 |
size = get_nr_free_clusters(vol) << vol->cluster_size_bits >> PAGE_CACHE_SHIFT; if (size < 0LL) size = 0LL; /* Free blocks avail to non-superuser, same as above on NTFS. */ sfs->f_bavail = sfs->f_bfree = size; /* Serialize accesses to the inode bitmap. */ down_read(&vol->mftbmp_lock); |
218357ff1 NTFS: - Use i_siz... |
2610 2611 2612 2613 2614 2615 2616 2617 2618 2619 |
read_lock_irqsave(&mft_ni->size_lock, flags); size = i_size_read(vol->mft_ino) >> vol->mft_record_size_bits; /* * Convert the maximum number of set bits into bytes rounded up, then * convert into multiples of PAGE_CACHE_SIZE, rounding up so that if we * have one full and one partial page max_index = 2. */ max_index = ((((mft_ni->initialized_size >> vol->mft_record_size_bits) + 7) >> 3) + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT; read_unlock_irqrestore(&mft_ni->size_lock, flags); |
c002f4254 NTFS: - Add disab... |
2620 |
/* Number of inodes in filesystem (at this point in time). */ |
218357ff1 NTFS: - Use i_siz... |
2621 |
sfs->f_files = size; |
1da177e4c Linux-2.6.12-rc2 |
2622 |
/* Free inodes in fs (based on current total count). */ |
218357ff1 NTFS: - Use i_siz... |
2623 |
sfs->f_ffree = __get_nr_free_mft_records(vol, size, max_index); |
1da177e4c Linux-2.6.12-rc2 |
2624 2625 2626 2627 2628 |
up_read(&vol->mftbmp_lock); /* * File system id. This is extremely *nix flavour dependent and even * within Linux itself all fs do their own thing. I interpret this to * mean a unique id associated with the mounted fs and not the id |
c002f4254 NTFS: - Add disab... |
2629 2630 |
* associated with the filesystem driver, the latter is already given * by the filesystem type in sfs->f_type. Thus we use the 64-bit |
1da177e4c Linux-2.6.12-rc2 |
2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 |
* volume serial number splitting it into two 32-bit parts. We enter * the least significant 32-bits in f_fsid[0] and the most significant * 32-bits in f_fsid[1]. */ sfs->f_fsid.val[0] = vol->serial_no & 0xffffffff; sfs->f_fsid.val[1] = (vol->serial_no >> 32) & 0xffffffff; /* Maximum length of filenames. */ sfs->f_namelen = NTFS_MAX_NAME_LEN; return 0; } |
a9185b41a pass writeback_co... |
2641 2642 2643 2644 2645 2646 |
#ifdef NTFS_RW static int ntfs_write_inode(struct inode *vi, struct writeback_control *wbc) { return __ntfs_write_inode(vi, wbc->sync_mode == WB_SYNC_ALL); } #endif |
1da177e4c Linux-2.6.12-rc2 |
2647 2648 2649 |
/** * The complete super operations. */ |
ee9b6d61a [PATCH] Mark stru... |
2650 |
static const struct super_operations ntfs_sops = { |
1da177e4c Linux-2.6.12-rc2 |
2651 2652 |
.alloc_inode = ntfs_alloc_big_inode, /* VFS: Allocate new inode. */ .destroy_inode = ntfs_destroy_big_inode, /* VFS: Deallocate inode. */ |
1da177e4c Linux-2.6.12-rc2 |
2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 |
#ifdef NTFS_RW //.dirty_inode = NULL, /* VFS: Called from // __mark_inode_dirty(). */ .write_inode = ntfs_write_inode, /* VFS: Write dirty inode to disk. */ //.drop_inode = NULL, /* VFS: Called just after the // inode reference count has // been decreased to zero. // NOTE: The inode lock is // held. See fs/inode.c:: // generic_drop_inode(). */ //.delete_inode = NULL, /* VFS: Delete inode from disk. // Called when i_count becomes // 0 and i_nlink is also 0. */ //.write_super = NULL, /* Flush dirty super block to // disk. */ //.sync_fs = NULL, /* ? */ //.write_super_lockfs = NULL, /* ? */ //.unlockfs = NULL, /* ? */ #endif /* NTFS_RW */ .put_super = ntfs_put_super, /* Syscall: umount. */ .statfs = ntfs_statfs, /* Syscall: statfs */ .remount_fs = ntfs_remount, /* Syscall: mount -o remount. */ |
b57922d97 convert remaining... |
2676 |
.evict_inode = ntfs_evict_big_inode, /* VFS: Called when an inode is |
1da177e4c Linux-2.6.12-rc2 |
2677 2678 2679 2680 2681 |
removed from memory. */ //.umount_begin = NULL, /* Forced umount. */ .show_options = ntfs_show_options, /* Show mount options in proc. */ }; |
1da177e4c Linux-2.6.12-rc2 |
2682 |
/** |
c002f4254 NTFS: - Add disab... |
2683 2684 |
* ntfs_fill_super - mount an ntfs filesystem * @sb: super block of ntfs filesystem to mount |
1da177e4c Linux-2.6.12-rc2 |
2685 2686 2687 2688 |
* @opt: string containing the mount options * @silent: silence error output * * ntfs_fill_super() is called by the VFS to mount the device described by @sb |
c002f4254 NTFS: - Add disab... |
2689 |
* with the mount otions in @data with the NTFS filesystem. |
1da177e4c Linux-2.6.12-rc2 |
2690 2691 |
* * If @silent is true, remain silent even if errors are detected. This is used |
c002f4254 NTFS: - Add disab... |
2692 2693 2694 |
* during bootup, when the kernel tries to mount the root filesystem with all * registered filesystems one after the other until one succeeds. This implies * that all filesystems except the correct one will quite correctly and |
1da177e4c Linux-2.6.12-rc2 |
2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 |
* expectedly return an error, but nobody wants to see error messages when in * fact this is what is supposed to happen. * * NOTE: @sb->s_flags contains the mount options flags. */ static int ntfs_fill_super(struct super_block *sb, void *opt, const int silent) { ntfs_volume *vol; struct buffer_head *bh; struct inode *tmp_ino; |
78af34f03 NTFS: Implement s... |
2705 |
int blocksize, result; |
1da177e4c Linux-2.6.12-rc2 |
2706 |
|
593453747 [PATCH] lockdep: ... |
2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 |
/* * We do a pretty difficult piece of bootstrap by reading the * MFT (and other metadata) from disk into memory. We'll only * release this metadata during umount, so the locking patterns * observed during bootstrap do not count. So turn off the * observation of locking patterns (strictly for this context * only) while mounting NTFS. [The validator is still active * otherwise, even for this context: it will for example record * lock class registrations.] */ lockdep_off(); |
1da177e4c Linux-2.6.12-rc2 |
2718 2719 |
ntfs_debug("Entering."); #ifndef NTFS_RW |
24a44dca3 [PATCH] ntfs: rem... |
2720 |
sb->s_flags |= MS_RDONLY; |
1da177e4c Linux-2.6.12-rc2 |
2721 2722 2723 2724 2725 2726 2727 2728 |
#endif /* ! NTFS_RW */ /* Allocate a new ntfs_volume and place it in sb->s_fs_info. */ sb->s_fs_info = kmalloc(sizeof(ntfs_volume), GFP_NOFS); vol = NTFS_SB(sb); if (!vol) { if (!silent) ntfs_error(sb, "Allocation of NTFS volume structure " "failed. Aborting mount..."); |
593453747 [PATCH] lockdep: ... |
2729 |
lockdep_on(); |
1da177e4c Linux-2.6.12-rc2 |
2730 2731 2732 |
return -ENOMEM; } /* Initialize ntfs_volume structure. */ |
442d207eb NTFS: Use C99 sty... |
2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 |
*vol = (ntfs_volume) { .sb = sb, /* * Default is group and other don't have any access to files or * directories while owner has full access. Further, files by * default are not executable but directories are of course * browseable. */ .fmask = 0177, .dmask = 0077, }; |
1da177e4c Linux-2.6.12-rc2 |
2744 |
init_rwsem(&vol->mftbmp_lock); |
1da177e4c Linux-2.6.12-rc2 |
2745 |
init_rwsem(&vol->lcnbmp_lock); |
1da177e4c Linux-2.6.12-rc2 |
2746 |
|
c002f4254 NTFS: - Add disab... |
2747 2748 |
/* By default, enable sparse support. */ NVolSetSparseEnabled(vol); |
1da177e4c Linux-2.6.12-rc2 |
2749 2750 2751 |
/* Important to get the mount options dealt with now. */ if (!parse_options(vol, (char*)opt)) goto err_out_now; |
78af34f03 NTFS: Implement s... |
2752 |
/* We support sector sizes up to the PAGE_CACHE_SIZE. */ |
e1defc4ff block: Do away wi... |
2753 |
if (bdev_logical_block_size(sb->s_bdev) > PAGE_CACHE_SIZE) { |
78af34f03 NTFS: Implement s... |
2754 2755 2756 2757 2758 |
if (!silent) ntfs_error(sb, "Device has unsupported sector size " "(%i). The maximum supported sector " "size on this architecture is %lu " "bytes.", |
e1defc4ff block: Do away wi... |
2759 |
bdev_logical_block_size(sb->s_bdev), |
78af34f03 NTFS: Implement s... |
2760 2761 2762 |
PAGE_CACHE_SIZE); goto err_out_now; } |
1da177e4c Linux-2.6.12-rc2 |
2763 |
/* |
78af34f03 NTFS: Implement s... |
2764 2765 |
* Setup the device access block size to NTFS_BLOCK_SIZE or the hard * sector size, whichever is bigger. |
1da177e4c Linux-2.6.12-rc2 |
2766 |
*/ |
78af34f03 NTFS: Implement s... |
2767 2768 |
blocksize = sb_min_blocksize(sb, NTFS_BLOCK_SIZE); if (blocksize < NTFS_BLOCK_SIZE) { |
1da177e4c Linux-2.6.12-rc2 |
2769 |
if (!silent) |
78af34f03 NTFS: Implement s... |
2770 |
ntfs_error(sb, "Unable to set device block size."); |
1da177e4c Linux-2.6.12-rc2 |
2771 2772 |
goto err_out_now; } |
78af34f03 NTFS: Implement s... |
2773 2774 2775 2776 2777 |
BUG_ON(blocksize != sb->s_blocksize); ntfs_debug("Set device block size to %i bytes (block size bits %i).", blocksize, sb->s_blocksize_bits); /* Determine the size of the device in units of block_size bytes. */ if (!i_size_read(sb->s_bdev->bd_inode)) { |
1da177e4c Linux-2.6.12-rc2 |
2778 |
if (!silent) |
78af34f03 NTFS: Implement s... |
2779 |
ntfs_error(sb, "Unable to determine device size."); |
1da177e4c Linux-2.6.12-rc2 |
2780 2781 |
goto err_out_now; } |
218357ff1 NTFS: - Use i_siz... |
2782 |
vol->nr_blocks = i_size_read(sb->s_bdev->bd_inode) >> |
78af34f03 NTFS: Implement s... |
2783 |
sb->s_blocksize_bits; |
1da177e4c Linux-2.6.12-rc2 |
2784 2785 2786 2787 2788 2789 |
/* Read the boot sector and return unlocked buffer head to it. */ if (!(bh = read_ntfs_boot_sector(sb, silent))) { if (!silent) ntfs_error(sb, "Not an NTFS volume."); goto err_out_now; } |
1da177e4c Linux-2.6.12-rc2 |
2790 |
/* |
78af34f03 NTFS: Implement s... |
2791 |
* Extract the data from the boot sector and setup the ntfs volume |
1da177e4c Linux-2.6.12-rc2 |
2792 2793 2794 |
* using it. */ result = parse_ntfs_boot_sector(vol, (NTFS_BOOT_SECTOR*)bh->b_data); |
1da177e4c Linux-2.6.12-rc2 |
2795 |
brelse(bh); |
1da177e4c Linux-2.6.12-rc2 |
2796 2797 2798 2799 2800 |
if (!result) { if (!silent) ntfs_error(sb, "Unsupported NTFS filesystem."); goto err_out_now; } |
1da177e4c Linux-2.6.12-rc2 |
2801 |
/* |
78af34f03 NTFS: Implement s... |
2802 2803 2804 2805 2806 2807 2808 2809 |
* If the boot sector indicates a sector size bigger than the current * device block size, switch the device block size to the sector size. * TODO: It may be possible to support this case even when the set * below fails, we would just be breaking up the i/o for each sector * into multiple blocks for i/o purposes but otherwise it should just * work. However it is safer to leave disabled until someone hits this * error message and then we can get them to try it without the setting * so we know for sure that it works. |
1da177e4c Linux-2.6.12-rc2 |
2810 |
*/ |
78af34f03 NTFS: Implement s... |
2811 2812 2813 2814 2815 2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 |
if (vol->sector_size > blocksize) { blocksize = sb_set_blocksize(sb, vol->sector_size); if (blocksize != vol->sector_size) { if (!silent) ntfs_error(sb, "Unable to set device block " "size to sector size (%i).", vol->sector_size); goto err_out_now; } BUG_ON(blocksize != sb->s_blocksize); vol->nr_blocks = i_size_read(sb->s_bdev->bd_inode) >> sb->s_blocksize_bits; ntfs_debug("Changed device block size to %i bytes (block size " "bits %i) to match volume sector size.", blocksize, sb->s_blocksize_bits); } /* Initialize the cluster and mft allocators. */ ntfs_setup_allocators(vol); |
1da177e4c Linux-2.6.12-rc2 |
2829 2830 |
/* Setup remaining fields in the super block. */ sb->s_magic = NTFS_SB_MAGIC; |
1da177e4c Linux-2.6.12-rc2 |
2831 2832 2833 2834 2835 2836 2837 2838 2839 |
/* * Ntfs allows 63 bits for the file size, i.e. correct would be: * sb->s_maxbytes = ~0ULL >> 1; * But the kernel uses a long as the page cache page index which on * 32-bit architectures is only 32-bits. MAX_LFS_FILESIZE is kernel * defined to the maximum the page cache page index can cope with * without overflowing the index or to 2^63 - 1, whichever is smaller. */ sb->s_maxbytes = MAX_LFS_FILESIZE; |
78af34f03 NTFS: Implement s... |
2840 |
/* Ntfs measures time in 100ns intervals. */ |
1da177e4c Linux-2.6.12-rc2 |
2841 |
sb->s_time_gran = 100; |
1da177e4c Linux-2.6.12-rc2 |
2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 |
/* * Now load the metadata required for the page cache and our address * space operations to function. We do this by setting up a specialised * read_inode method and then just calling the normal iget() to obtain * the inode for $MFT which is sufficient to allow our normal inode * operations and associated address space operations to function. */ sb->s_op = &ntfs_sops; tmp_ino = new_inode(sb); if (!tmp_ino) { if (!silent) ntfs_error(sb, "Failed to load essential metadata."); goto err_out_now; } tmp_ino->i_ino = FILE_MFT; insert_inode_hash(tmp_ino); if (ntfs_read_inode_mount(tmp_ino) < 0) { if (!silent) ntfs_error(sb, "Failed to load essential metadata."); goto iput_tmp_ino_err_out_now; } |
4e5e529ad NTFS: Semaphore t... |
2863 |
mutex_lock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 |
/* * The current mount is a compression user if the cluster size is * less than or equal 4kiB. */ if (vol->cluster_size <= 4096 && !ntfs_nr_compression_users++) { result = allocate_compression_buffers(); if (result) { ntfs_error(NULL, "Failed to allocate buffers " "for compression engine."); ntfs_nr_compression_users--; |
4e5e529ad NTFS: Semaphore t... |
2874 |
mutex_unlock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 |
goto iput_tmp_ino_err_out_now; } } /* * Generate the global default upcase table if necessary. Also * temporarily increment the number of upcase users to avoid race * conditions with concurrent (u)mounts. */ if (!default_upcase) default_upcase = generate_default_upcase(); ntfs_nr_upcase_users++; |
4e5e529ad NTFS: Semaphore t... |
2886 |
mutex_unlock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 |
/* * From now on, ignore @silent parameter. If we fail below this line, * it will be due to a corrupt fs or a system error, so we report it. */ /* * Open the system files with normal access functions and complete * setting up the ntfs super block. */ if (!load_system_files(vol)) { ntfs_error(sb, "Failed to load system files."); goto unl_upcase_iput_tmp_ino_err_out_now; } if ((sb->s_root = d_alloc_root(vol->root_ino))) { |
7de9c6ee3 new helper: ihold() |
2900 2901 |
/* We grab a reference, simulating an ntfs_iget(). */ ihold(vol->root_ino); |
1da177e4c Linux-2.6.12-rc2 |
2902 2903 |
ntfs_debug("Exiting, status successful."); /* Release the default upcase if it has no users. */ |
4e5e529ad NTFS: Semaphore t... |
2904 |
mutex_lock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
2905 2906 2907 2908 |
if (!--ntfs_nr_upcase_users && default_upcase) { ntfs_free(default_upcase); default_upcase = NULL; } |
4e5e529ad NTFS: Semaphore t... |
2909 |
mutex_unlock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
2910 |
sb->s_export_op = &ntfs_export_ops; |
593453747 [PATCH] lockdep: ... |
2911 |
lockdep_on(); |
1da177e4c Linux-2.6.12-rc2 |
2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 |
return 0; } ntfs_error(sb, "Failed to allocate root directory."); /* Clean up after the successful load_system_files() call from above. */ // TODO: Use ntfs_put_super() instead of repeating all this code... // FIXME: Should mark the volume clean as the error is most likely // -ENOMEM. iput(vol->vol_ino); vol->vol_ino = NULL; /* NTFS 3.0+ specific clean up. */ if (vol->major_ver >= 3) { #ifdef NTFS_RW |
3f2faef00 NTFS: Stamp the t... |
2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 |
if (vol->usnjrnl_j_ino) { iput(vol->usnjrnl_j_ino); vol->usnjrnl_j_ino = NULL; } if (vol->usnjrnl_max_ino) { iput(vol->usnjrnl_max_ino); vol->usnjrnl_max_ino = NULL; } if (vol->usnjrnl_ino) { iput(vol->usnjrnl_ino); vol->usnjrnl_ino = NULL; } |
1da177e4c Linux-2.6.12-rc2 |
2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 2959 2960 2961 2962 2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 2975 2976 |
if (vol->quota_q_ino) { iput(vol->quota_q_ino); vol->quota_q_ino = NULL; } if (vol->quota_ino) { iput(vol->quota_ino); vol->quota_ino = NULL; } #endif /* NTFS_RW */ if (vol->extend_ino) { iput(vol->extend_ino); vol->extend_ino = NULL; } if (vol->secure_ino) { iput(vol->secure_ino); vol->secure_ino = NULL; } } iput(vol->root_ino); vol->root_ino = NULL; iput(vol->lcnbmp_ino); vol->lcnbmp_ino = NULL; iput(vol->mftbmp_ino); vol->mftbmp_ino = NULL; #ifdef NTFS_RW if (vol->logfile_ino) { iput(vol->logfile_ino); vol->logfile_ino = NULL; } if (vol->mftmirr_ino) { iput(vol->mftmirr_ino); vol->mftmirr_ino = NULL; } #endif /* NTFS_RW */ /* Throw away the table of attribute definitions. */ vol->attrdef_size = 0; if (vol->attrdef) { ntfs_free(vol->attrdef); vol->attrdef = NULL; } vol->upcase_len = 0; |
4e5e529ad NTFS: Semaphore t... |
2977 |
mutex_lock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
2978 2979 2980 2981 |
if (vol->upcase == default_upcase) { ntfs_nr_upcase_users--; vol->upcase = NULL; } |
4e5e529ad NTFS: Semaphore t... |
2982 |
mutex_unlock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
2983 2984 2985 2986 2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 |
if (vol->upcase) { ntfs_free(vol->upcase); vol->upcase = NULL; } if (vol->nls_map) { unload_nls(vol->nls_map); vol->nls_map = NULL; } /* Error exit code path. */ unl_upcase_iput_tmp_ino_err_out_now: /* * Decrease the number of upcase users and destroy the global default * upcase table if necessary. */ |
4e5e529ad NTFS: Semaphore t... |
2997 |
mutex_lock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
2998 2999 3000 3001 3002 3003 |
if (!--ntfs_nr_upcase_users && default_upcase) { ntfs_free(default_upcase); default_upcase = NULL; } if (vol->cluster_size <= 4096 && !--ntfs_nr_compression_users) free_compression_buffers(); |
4e5e529ad NTFS: Semaphore t... |
3004 |
mutex_unlock(&ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
3005 3006 3007 3008 3009 |
iput_tmp_ino_err_out_now: iput(tmp_ino); if (vol->mft_ino && vol->mft_ino != tmp_ino) iput(vol->mft_ino); vol->mft_ino = NULL; |
1da177e4c Linux-2.6.12-rc2 |
3010 3011 |
/* Errors at this stage are irrelevant. */ err_out_now: |
1da177e4c Linux-2.6.12-rc2 |
3012 3013 3014 |
sb->s_fs_info = NULL; kfree(vol); ntfs_debug("Failed, returning -EINVAL."); |
593453747 [PATCH] lockdep: ... |
3015 |
lockdep_on(); |
1da177e4c Linux-2.6.12-rc2 |
3016 3017 3018 3019 3020 3021 3022 3023 |
return -EINVAL; } /* * This is a slab cache to optimize allocations and deallocations of Unicode * strings of the maximum length allowed by NTFS, which is NTFS_MAX_NAME_LEN * (255) Unicode characters + a terminating NULL Unicode character. */ |
64419d93a NTFS: We have str... |
3024 |
struct kmem_cache *ntfs_name_cache; |
1da177e4c Linux-2.6.12-rc2 |
3025 |
|
7fafb8b63 NTFS: Minor clean... |
3026 |
/* Slab caches for efficient allocation/deallocation of inodes. */ |
64419d93a NTFS: We have str... |
3027 3028 |
struct kmem_cache *ntfs_inode_cache; struct kmem_cache *ntfs_big_inode_cache; |
1da177e4c Linux-2.6.12-rc2 |
3029 3030 |
/* Init once constructor for the inode slab cache. */ |
51cc50685 SL*B: drop kmem c... |
3031 |
static void ntfs_big_inode_init_once(void *foo) |
1da177e4c Linux-2.6.12-rc2 |
3032 3033 |
{ ntfs_inode *ni = (ntfs_inode *)foo; |
a35afb830 Remove SLAB_CTOR_... |
3034 |
inode_init_once(VFS_I(ni)); |
1da177e4c Linux-2.6.12-rc2 |
3035 3036 3037 3038 3039 3040 |
} /* * Slab caches to optimize allocations and deallocations of attribute search * contexts and index contexts, respectively. */ |
64419d93a NTFS: We have str... |
3041 3042 |
struct kmem_cache *ntfs_attr_ctx_cache; struct kmem_cache *ntfs_index_ctx_cache; |
1da177e4c Linux-2.6.12-rc2 |
3043 |
|
e750d1c7c NTFS: 2.1.27 - Va... |
3044 |
/* Driver wide mutex. */ |
4e5e529ad NTFS: Semaphore t... |
3045 |
DEFINE_MUTEX(ntfs_lock); |
1da177e4c Linux-2.6.12-rc2 |
3046 |
|
152a08366 new helper: mount... |
3047 3048 |
static struct dentry *ntfs_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) |
1da177e4c Linux-2.6.12-rc2 |
3049 |
{ |
152a08366 new helper: mount... |
3050 |
return mount_bdev(fs_type, flags, dev_name, data, ntfs_fill_super); |
1da177e4c Linux-2.6.12-rc2 |
3051 3052 3053 3054 3055 |
} static struct file_system_type ntfs_fs_type = { .owner = THIS_MODULE, .name = "ntfs", |
152a08366 new helper: mount... |
3056 |
.mount = ntfs_mount, |
1da177e4c Linux-2.6.12-rc2 |
3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 |
.kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; /* Stable names for the slab caches. */ static const char ntfs_index_ctx_cache_name[] = "ntfs_index_ctx_cache"; static const char ntfs_attr_ctx_cache_name[] = "ntfs_attr_ctx_cache"; static const char ntfs_name_cache_name[] = "ntfs_name_cache"; static const char ntfs_inode_cache_name[] = "ntfs_inode_cache"; static const char ntfs_big_inode_cache_name[] = "ntfs_big_inode_cache"; static int __init init_ntfs_fs(void) { int err = 0; /* This may be ugly but it results in pretty output so who cares. (-8 */ printk(KERN_INFO "NTFS driver " NTFS_VERSION " [Flags: R/" #ifdef NTFS_RW "W" #else "O" #endif #ifdef DEBUG " DEBUG" #endif #ifdef MODULE " MODULE" #endif "]. "); ntfs_debug("Debug messages are enabled."); ntfs_index_ctx_cache = kmem_cache_create(ntfs_index_ctx_cache_name, sizeof(ntfs_index_context), 0 /* offset */, |
20c2df83d mm: Remove slab d... |
3092 |
SLAB_HWCACHE_ALIGN, NULL /* ctor */); |
1da177e4c Linux-2.6.12-rc2 |
3093 3094 3095 3096 3097 3098 3099 3100 |
if (!ntfs_index_ctx_cache) { printk(KERN_CRIT "NTFS: Failed to create %s! ", ntfs_index_ctx_cache_name); goto ictx_err_out; } ntfs_attr_ctx_cache = kmem_cache_create(ntfs_attr_ctx_cache_name, sizeof(ntfs_attr_search_ctx), 0 /* offset */, |
20c2df83d mm: Remove slab d... |
3101 |
SLAB_HWCACHE_ALIGN, NULL /* ctor */); |
1da177e4c Linux-2.6.12-rc2 |
3102 3103 3104 3105 3106 3107 3108 3109 3110 |
if (!ntfs_attr_ctx_cache) { printk(KERN_CRIT "NTFS: Failed to create %s! ", ntfs_attr_ctx_cache_name); goto actx_err_out; } ntfs_name_cache = kmem_cache_create(ntfs_name_cache_name, (NTFS_MAX_NAME_LEN+1) * sizeof(ntfschar), 0, |
20c2df83d mm: Remove slab d... |
3111 |
SLAB_HWCACHE_ALIGN, NULL); |
1da177e4c Linux-2.6.12-rc2 |
3112 3113 3114 3115 3116 3117 3118 3119 3120 |
if (!ntfs_name_cache) { printk(KERN_CRIT "NTFS: Failed to create %s! ", ntfs_name_cache_name); goto name_err_out; } ntfs_inode_cache = kmem_cache_create(ntfs_inode_cache_name, sizeof(ntfs_inode), 0, |
20c2df83d mm: Remove slab d... |
3121 |
SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD, NULL); |
1da177e4c Linux-2.6.12-rc2 |
3122 3123 3124 3125 3126 3127 3128 3129 3130 |
if (!ntfs_inode_cache) { printk(KERN_CRIT "NTFS: Failed to create %s! ", ntfs_inode_cache_name); goto inode_err_out; } ntfs_big_inode_cache = kmem_cache_create(ntfs_big_inode_cache_name, sizeof(big_ntfs_inode), 0, |
4b6a9316f [PATCH] cpuset me... |
3131 |
SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD, |
20c2df83d mm: Remove slab d... |
3132 |
ntfs_big_inode_init_once); |
1da177e4c Linux-2.6.12-rc2 |
3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 |
if (!ntfs_big_inode_cache) { printk(KERN_CRIT "NTFS: Failed to create %s! ", ntfs_big_inode_cache_name); goto big_inode_err_out; } /* Register the ntfs sysctls. */ err = ntfs_sysctl(1); if (err) { printk(KERN_CRIT "NTFS: Failed to register NTFS sysctls! "); goto sysctl_err_out; } err = register_filesystem(&ntfs_fs_type); if (!err) { ntfs_debug("NTFS driver registered successfully."); return 0; /* Success! */ } |
c002f4254 NTFS: - Add disab... |
3153 3154 |
printk(KERN_CRIT "NTFS: Failed to register NTFS filesystem driver! "); |
1da177e4c Linux-2.6.12-rc2 |
3155 3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 |
sysctl_err_out: kmem_cache_destroy(ntfs_big_inode_cache); big_inode_err_out: kmem_cache_destroy(ntfs_inode_cache); inode_err_out: kmem_cache_destroy(ntfs_name_cache); name_err_out: kmem_cache_destroy(ntfs_attr_ctx_cache); actx_err_out: kmem_cache_destroy(ntfs_index_ctx_cache); ictx_err_out: if (!err) { |
c002f4254 NTFS: - Add disab... |
3168 |
printk(KERN_CRIT "NTFS: Aborting NTFS filesystem driver " |
1da177e4c Linux-2.6.12-rc2 |
3169 3170 3171 3172 3173 3174 3175 3176 3177 |
"registration... "); err = -ENOMEM; } return err; } static void __exit exit_ntfs_fs(void) { |
1da177e4c Linux-2.6.12-rc2 |
3178 3179 3180 |
ntfs_debug("Unregistering NTFS driver."); unregister_filesystem(&ntfs_fs_type); |
1a1d92c10 [PATCH] Really ig... |
3181 3182 3183 3184 3185 |
kmem_cache_destroy(ntfs_big_inode_cache); kmem_cache_destroy(ntfs_inode_cache); kmem_cache_destroy(ntfs_name_cache); kmem_cache_destroy(ntfs_attr_ctx_cache); kmem_cache_destroy(ntfs_index_ctx_cache); |
1da177e4c Linux-2.6.12-rc2 |
3186 3187 3188 |
/* Unregister the ntfs sysctls. */ ntfs_sysctl(0); } |
2818ef50c NTFS: writev() fi... |
3189 3190 |
MODULE_AUTHOR("Anton Altaparmakov <anton@tuxera.com>"); MODULE_DESCRIPTION("NTFS 1.2/3.x driver - Copyright (c) 2001-2011 Anton Altaparmakov and Tuxera Inc."); |
1da177e4c Linux-2.6.12-rc2 |
3191 3192 3193 |
MODULE_VERSION(NTFS_VERSION); MODULE_LICENSE("GPL"); #ifdef DEBUG |
69116f279 module_param: avo... |
3194 |
module_param(debug_msgs, bint, 0); |
1da177e4c Linux-2.6.12-rc2 |
3195 3196 3197 3198 3199 |
MODULE_PARM_DESC(debug_msgs, "Enable debug messages."); #endif module_init(init_ntfs_fs) module_exit(exit_ntfs_fs) |