/*
* super.c - NTFS kernel super block handling. Part of the Linux-NTFS project.
*
- * Copyright (c) 2001-2004 Anton Altaparmakov
+ * Copyright (c) 2001-2006 Anton Altaparmakov
* Copyright (c) 2001,2002 Richard Russon
*
* This program/include file is free software; you can redistribute it and/or
#include <linux/stddef.h>
#include <linux/init.h>
+#include <linux/slab.h>
#include <linux/string.h>
#include <linux/spinlock.h>
#include <linux/blkdev.h> /* For bdev_hardsect_size(). */
#include "sysctl.h"
#include "logfile.h"
#include "quota.h"
+#include "usnjrnl.h"
#include "dir.h"
#include "debug.h"
#include "index.h"
#include "aops.h"
+#include "layout.h"
#include "malloc.h"
#include "ntfs.h"
-/* Number of mounted file systems which have compression enabled. */
+/* Number of mounted filesystems which have compression enabled. */
static unsigned long ntfs_nr_compression_users;
/* A global default upcase table and a corresponding reference count. */
gid_t gid = (gid_t)-1;
mode_t fmask = (mode_t)-1, dmask = (mode_t)-1;
int mft_zone_multiplier = -1, on_errors = -1;
- int show_sys_files = -1, case_sensitive = -1;
+ int show_sys_files = -1, case_sensitive = -1, disable_sparse = -1;
struct nls_table *nls_map = NULL, *old_nls;
/* I am lazy... (-8 */
if (*v) \
goto needs_val; \
}
+#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; \
+ }
#define NTFS_GETOPT_BOOL(option, variable) \
if (!strcmp(p, option)) { \
BOOL val; \
*v++ = 0;
NTFS_GETOPT("uid", uid)
else NTFS_GETOPT("gid", gid)
- else NTFS_GETOPT("umask", fmask = dmask)
- else NTFS_GETOPT("fmask", fmask)
- else NTFS_GETOPT("dmask", dmask)
+ else NTFS_GETOPT_OCTAL("umask", fmask = dmask)
+ else NTFS_GETOPT_OCTAL("fmask", fmask)
+ else NTFS_GETOPT_OCTAL("dmask", dmask)
else NTFS_GETOPT("mft_zone_multiplier", mft_zone_multiplier)
else NTFS_GETOPT_WITH_DEFAULT("sloppy", sloppy, TRUE)
else NTFS_GETOPT_BOOL("show_sys_files", show_sys_files)
else NTFS_GETOPT_BOOL("case_sensitive", case_sensitive)
+ else NTFS_GETOPT_BOOL("disable_sparse", disable_sparse)
else NTFS_GETOPT_OPTIONS_ARRAY("errors", on_errors,
on_errors_arr)
else if (!strcmp(p, "posix") || !strcmp(p, "show_inodes"))
else
NVolClearCaseSensitive(vol);
}
+ 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);
+ }
+ }
return TRUE;
needs_arg:
ntfs_error(vol->sb, "The %s option requires an argument.", p);
ntfs_debug("Entering with remount options string: %s", opt);
#ifndef NTFS_RW
- /* For read-only compiled driver, enforce all read-only flags. */
- *flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
+ /* For read-only compiled driver, enforce read-only flag. */
+ *flags |= MS_RDONLY;
#else /* NTFS_RW */
/*
* For the read-write compiled driver, if we are remounting read-write,
ntfs_error(sb, "Volume is dirty and read-only%s", es);
return -EROFS;
}
+ 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;
+ }
if (vol->vol_flags & VOLUME_MUST_MOUNT_RO_MASK) {
- ntfs_error(sb, "Volume has unsupported flags set and "
- "is read-only%s", es);
+ ntfs_error(sb, "Volume has unsupported flags set "
+ "(0x%x) and is read-only%s",
+ (unsigned)le16_to_cpu(vol->vol_flags),
+ es);
return -EROFS;
}
if (ntfs_set_volume_flags(vol, VOLUME_IS_DIRTY)) {
NVolSetErrors(vol);
return -EROFS;
}
+ if (!ntfs_stamp_usnjrnl(vol)) {
+ ntfs_error(sb, "Failed to stamp transation log "
+ "($UsnJrnl)%s", es);
+ NVolSetErrors(vol);
+ return -EROFS;
+ }
} else if (!(sb->s_flags & MS_RDONLY) && (*flags & MS_RDONLY)) {
/* Remounting read-only. */
if (!NVolErrors(vol)) {
{
/*
* Check that checksum == sum of u32 values from b to the checksum
- * field. If checksum is zero, no checking is done.
+ * 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.
*/
- if ((void*)b < (void*)&b->checksum && b->checksum) {
+ if ((void*)b < (void*)&b->checksum && b->checksum && !silent) {
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)
- goto not_ntfs;
+ ntfs_warning(sb, "Invalid boot sector checksum.");
}
/* Check OEMidentifier is "NTFS " */
if (b->oem_id != magicNTFS)
default:
goto not_ntfs;
}
- /* Check the cluster size is not above 65536 bytes. */
+ /* Check the cluster size is not above the maximum (64kiB). */
if ((u32)le16_to_cpu(b->bpb.bytes_per_sector) *
- b->bpb.sectors_per_cluster > 0x10000)
+ b->bpb.sectors_per_cluster > NTFS_MAX_CLUSTER_SIZE)
goto not_ntfs;
/* Check reserved/unused fields are really zero. */
if (le16_to_cpu(b->bpb.reserved_sectors) ||
* many BIOSes will refuse to boot from a bootsector if the magic is
* incorrect, so we emit a warning.
*/
- if (!silent && b->end_of_sector_marker != cpu_to_le16(0xaa55))
+ if (!silent && b->end_of_sector_marker != const_cpu_to_le16(0xaa55))
ntfs_warning(sb, "Invalid end of sector marker.");
return TRUE;
not_ntfs:
{
const char *read_err_str = "Unable to read %s boot sector.";
struct buffer_head *bh_primary, *bh_backup;
- long nr_blocks = NTFS_SB(sb)->nr_blocks;
+ sector_t nr_blocks = NTFS_SB(sb)->nr_blocks;
/* Try to read primary boot sector. */
if ((bh_primary = sb_bread(sb, 0))) {
/*
* If we managed to read sector zero and the volume is not
* read-only, copy the found, valid backup boot sector to the
- * primary boot sector.
+ * 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).
*/
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,
- sb->s_blocksize);
+ NTFS_BLOCK_SIZE);
mark_buffer_dirty(bh_primary);
sync_dirty_buffer(bh_primary);
if (buffer_uptodate(bh_primary)) {
vol->sector_size);
ntfs_debug("vol->sector_size_bits = %i (0x%x)", vol->sector_size_bits,
vol->sector_size_bits);
- if (vol->sector_size != vol->sb->s_blocksize)
- ntfs_warning(vol->sb, "The boot sector indicates a sector size "
- "different from the device sector size.");
+ 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);
+ return FALSE;
+ }
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",
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);
- ntfs_debug("vol->cluster_size_bits = %i (0x%x)",
- vol->cluster_size_bits, vol->cluster_size_bits);
- if (vol->sector_size > vol->cluster_size) {
- ntfs_error(vol->sb, "Sector sizes above the cluster size are "
- "not supported. Sorry.");
- return FALSE;
- }
- if (vol->sb->s_blocksize > vol->cluster_size) {
- ntfs_error(vol->sb, "Cluster sizes smaller than the device "
- "sector size are not supported. Sorry.");
+ 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);
return FALSE;
}
clusters_per_mft_record = b->clusters_per_mft_record;
* we store $MFT/$DATA, the table of mft records in the page cache.
*/
if (vol->mft_record_size > PAGE_CACHE_SIZE) {
- ntfs_error(vol->sb, "Mft record size %i (0x%x) exceeds the "
- "page cache size on your system %lu (0x%lx). "
+ ntfs_error(vol->sb, "Mft record size (%i) exceeds the "
+ "PAGE_CACHE_SIZE on your system (%lu). "
"This is not supported. Sorry.",
- vol->mft_record_size, vol->mft_record_size,
- PAGE_CACHE_SIZE, PAGE_CACHE_SIZE);
+ vol->mft_record_size, PAGE_CACHE_SIZE);
+ return FALSE;
+ }
+ /* 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);
return FALSE;
}
clusters_per_index_record = b->clusters_per_index_record;
ntfs_debug("vol->index_record_size_bits = %i (0x%x)",
vol->index_record_size_bits,
vol->index_record_size_bits);
+ /* 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);
+ return FALSE;
+ }
/*
* 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
}
ll = sle64_to_cpu(b->mft_lcn);
if (ll >= vol->nr_clusters) {
- ntfs_error(vol->sb, "MFT LCN is beyond end of volume. Weird.");
+ ntfs_error(vol->sb, "MFT LCN (%lli, 0x%llx) is beyond end of "
+ "volume. Weird.", (unsigned long long)ll,
+ (unsigned long long)ll);
return FALSE;
}
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) {
- ntfs_error(vol->sb, "MFTMirr LCN is beyond end of volume. "
- "Weird.");
+ ntfs_error(vol->sb, "MFTMirr LCN (%lli, 0x%llx) is beyond end "
+ "of volume. Weird.", (unsigned long long)ll,
+ (unsigned long long)ll);
return FALSE;
}
vol->mftmirr_lcn = ll;
tmp_ni = NTFS_I(tmp_ino);
/* The $MFTMirr, like the $MFT is multi sector transfer protected. */
NInoSetMstProtected(tmp_ni);
+ NInoSetSparseDisabled(tmp_ni);
/*
* Set up our little cheat allowing us to reuse the async read io
* completion handler for directories.
*/
static BOOL check_mft_mirror(ntfs_volume *vol)
{
- unsigned long index;
struct super_block *sb = vol->sb;
ntfs_inode *mirr_ni;
struct page *mft_page, *mirr_page;
u8 *kmft, *kmirr;
runlist_element *rl, rl2[2];
+ pgoff_t index;
int mrecs_per_page, i;
ntfs_debug("Entering.");
kmirr = page_address(mirr_page);
++index;
}
- /* 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);
+ /* 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);
mm_unmap_out:
- ntfs_unmap_page(mirr_page);
+ ntfs_unmap_page(mirr_page);
mft_unmap_out:
- ntfs_unmap_page(mft_page);
- return FALSE;
+ ntfs_unmap_page(mft_page);
+ return FALSE;
+ }
}
- 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;
+ /* 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;
+ }
}
/* Get the amount of data in the current record. */
bytes = le32_to_cpu(((MFT_RECORD*)kmft)->bytes_in_use);
- if (!bytes || bytes > vol->mft_record_size) {
+ if (bytes < sizeof(MFT_RECORD_OLD) ||
+ bytes > vol->mft_record_size ||
+ ntfs_is_baad_recordp((le32*)kmft)) {
bytes = le32_to_cpu(((MFT_RECORD*)kmirr)->bytes_in_use);
- if (!bytes || bytes > vol->mft_record_size)
+ if (bytes < sizeof(MFT_RECORD_OLD) ||
+ bytes > vol->mft_record_size ||
+ ntfs_is_baad_recordp((le32*)kmirr))
bytes = vol->mft_record_size;
}
/* Compare the two records. */
*
* Return TRUE on success or FALSE on error.
*/
-static BOOL load_and_check_logfile(ntfs_volume *vol)
+static BOOL load_and_check_logfile(ntfs_volume *vol,
+ RESTART_PAGE_HEADER **rp)
{
struct inode *tmp_ino;
/* Caller will display error message. */
return FALSE;
}
- if (!ntfs_check_logfile(tmp_ino)) {
+ if (!ntfs_check_logfile(tmp_ino, rp)) {
iput(tmp_ino);
/* ntfs_check_logfile() will have displayed error output. */
return FALSE;
}
+ NInoSetSparseDisabled(NTFS_I(tmp_ino));
vol->logfile_ino = tmp_ino;
ntfs_debug("Done.");
return TRUE;
}
+#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;
+ static const ntfschar hiberfil[13] = { const_cpu_to_le16('h'),
+ const_cpu_to_le16('i'), const_cpu_to_le16('b'),
+ const_cpu_to_le16('e'), const_cpu_to_le16('r'),
+ const_cpu_to_le16('f'), const_cpu_to_le16('i'),
+ const_cpu_to_le16('l'), const_cpu_to_le16('.'),
+ const_cpu_to_le16('s'), const_cpu_to_le16('y'),
+ const_cpu_to_le16('s'), 0 };
+
+ ntfs_debug("Entering.");
+ /*
+ * Find the inode number for the hibernation file by looking up the
+ * filename hiberfil.sys in the root directory.
+ */
+ mutex_lock(&vol->root_ino->i_mutex);
+ mref = ntfs_lookup_inode_by_name(NTFS_I(vol->root_ino), hiberfil, 12,
+ &name);
+ mutex_unlock(&vol->root_ino->i_mutex);
+ 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;
+ }
+ /* A real error occured. */
+ 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);
+ if (*(le32*)kaddr == const_cpu_to_le32(0x72626968)/*'hibr'*/) {
+ 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;
+}
+
/**
* 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
* Find the inode number for the quota file by looking up the filename
* $Quota in the extended system files directory $Extend.
*/
- down(&vol->extend_ino->i_sem);
+ mutex_lock(&vol->extend_ino->i_mutex);
mref = ntfs_lookup_inode_by_name(NTFS_I(vol->extend_ino), Quota, 6,
&name);
- up(&vol->extend_ino->i_sem);
+ mutex_unlock(&vol->extend_ino->i_mutex);
if (IS_ERR_MREF(mref)) {
/*
* If the file does not exist, quotas are disabled and have
return FALSE;
}
/* We do not care for the type of match that was found. */
- if (name)
- kfree(name);
+ kfree(name);
/* Get the inode. */
tmp_ino = ntfs_iget(vol->sb, MREF(mref));
if (IS_ERR(tmp_ino) || is_bad_inode(tmp_ino)) {
return TRUE;
}
+/**
+ * load_and_init_usnjrnl - load and setup the transaction log if present
+ * @vol: ntfs super block describing device whose usnjrnl file to load
+ *
+ * Return TRUE on success or FALSE on error.
+ *
+ * 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.
+ */
+static BOOL load_and_init_usnjrnl(ntfs_volume *vol)
+{
+ MFT_REF mref;
+ struct inode *tmp_ino;
+ ntfs_inode *tmp_ni;
+ struct page *page;
+ ntfs_name *name = NULL;
+ USN_HEADER *uh;
+ static const ntfschar UsnJrnl[9] = { const_cpu_to_le16('$'),
+ const_cpu_to_le16('U'), const_cpu_to_le16('s'),
+ const_cpu_to_le16('n'), const_cpu_to_le16('J'),
+ const_cpu_to_le16('r'), const_cpu_to_le16('n'),
+ const_cpu_to_le16('l'), 0 };
+ static ntfschar Max[5] = { const_cpu_to_le16('$'),
+ const_cpu_to_le16('M'), const_cpu_to_le16('a'),
+ const_cpu_to_le16('x'), 0 };
+ static ntfschar J[3] = { const_cpu_to_le16('$'),
+ const_cpu_to_le16('J'), 0 };
+
+ ntfs_debug("Entering.");
+ /*
+ * Find the inode number for the transaction log file by looking up the
+ * filename $UsnJrnl in the extended system files directory $Extend.
+ */
+ mutex_lock(&vol->extend_ino->i_mutex);
+ mref = ntfs_lookup_inode_by_name(NTFS_I(vol->extend_ino), UsnJrnl, 8,
+ &name);
+ mutex_unlock(&vol->extend_ino->i_mutex);
+ if (IS_ERR_MREF(mref)) {
+ /*
+ * If the file does not exist, transaction logging is disabled,
+ * just return success.
+ */
+ if (MREF_ERR(mref) == -ENOENT) {
+ ntfs_debug("$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);
+ return TRUE;
+ }
+ /* A real error occured. */
+ ntfs_error(vol->sb, "Failed to find inode number for "
+ "$UsnJrnl.");
+ return FALSE;
+ }
+ /* 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 $UsnJrnl.");
+ return FALSE;
+ }
+ vol->usnjrnl_ino = tmp_ino;
+ /*
+ * If the transaction log is in the process of being deleted, we can
+ * ignore it.
+ */
+ if (unlikely(vol->vol_flags & VOLUME_DELETE_USN_UNDERWAY)) {
+ ntfs_debug("$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.");
+ return FALSE;
+ }
+ 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 "
+ "least 0x%zx bytes).", i_size_read(tmp_ino),
+ sizeof(USN_HEADER));
+ return FALSE;
+ }
+ /* 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.");
+ return FALSE;
+ }
+ 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.");
+ return FALSE;
+ }
+ /* 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.");
+ return FALSE;
+ }
+ 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). $UsnJrnl is corrupt.",
+ (long long)sle64_to_cpu(uh->allocation_delta),
+ (long long)sle64_to_cpu(uh->maximum_size));
+ ntfs_unmap_page(page);
+ return FALSE;
+ }
+ /*
+ * If the transaction log has been stamped and nothing has been written
+ * to it since, we do not need to stamp it.
+ */
+ if (unlikely(sle64_to_cpu(uh->lowest_valid_usn) >=
+ i_size_read(vol->usnjrnl_j_ino))) {
+ if (likely(sle64_to_cpu(uh->lowest_valid_usn) ==
+ i_size_read(vol->usnjrnl_j_ino))) {
+ ntfs_unmap_page(page);
+ ntfs_debug("$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);
+ return FALSE;
+ }
+ ntfs_unmap_page(page);
+ ntfs_debug("Done.");
+ return TRUE;
+}
+
/**
* load_and_init_attrdef - load the attribute definitions table for a volume
* @vol: ntfs super block describing device whose attrdef to load
*/
static BOOL load_and_init_attrdef(ntfs_volume *vol)
{
+ loff_t i_size;
struct super_block *sb = vol->sb;
struct inode *ino;
struct page *page;
- unsigned long index, max_index;
+ pgoff_t index, max_index;
unsigned int size;
ntfs_debug("Entering.");
iput(ino);
goto failed;
}
+ NInoSetSparseDisabled(NTFS_I(ino));
/* The size of FILE_AttrDef must be above 0 and fit inside 31 bits. */
- if (!ino->i_size || ino->i_size > 0x7fffffff)
+ i_size = i_size_read(ino);
+ if (i_size <= 0 || i_size > 0x7fffffff)
goto iput_failed;
- vol->attrdef = (ATTR_DEF*)ntfs_malloc_nofs(ino->i_size);
+ vol->attrdef = (ATTR_DEF*)ntfs_malloc_nofs(i_size);
if (!vol->attrdef)
goto iput_failed;
index = 0;
- max_index = ino->i_size >> PAGE_CACHE_SHIFT;
+ max_index = i_size >> PAGE_CACHE_SHIFT;
size = PAGE_CACHE_SIZE;
while (index < max_index) {
/* Read the attrdef table and copy it into the linear buffer. */
ntfs_unmap_page(page);
};
if (size == PAGE_CACHE_SIZE) {
- size = ino->i_size & ~PAGE_CACHE_MASK;
+ size = i_size & ~PAGE_CACHE_MASK;
if (size)
goto read_partial_attrdef_page;
}
- vol->attrdef_size = ino->i_size;
- ntfs_debug("Read %llu bytes from $AttrDef.", ino->i_size);
+ vol->attrdef_size = i_size;
+ ntfs_debug("Read %llu bytes from $AttrDef.", i_size);
iput(ino);
return TRUE;
free_iput_failed:
*/
static BOOL load_and_init_upcase(ntfs_volume *vol)
{
+ loff_t i_size;
struct super_block *sb = vol->sb;
struct inode *ino;
struct page *page;
- unsigned long index, max_index;
+ pgoff_t index, max_index;
unsigned int size;
int i, max;
* The upcase size must not be above 64k Unicode characters, must not
* be zero and must be a multiple of sizeof(ntfschar).
*/
- if (!ino->i_size || ino->i_size & (sizeof(ntfschar) - 1) ||
- ino->i_size > 64ULL * 1024 * sizeof(ntfschar))
+ i_size = i_size_read(ino);
+ if (!i_size || i_size & (sizeof(ntfschar) - 1) ||
+ i_size > 64ULL * 1024 * sizeof(ntfschar))
goto iput_upcase_failed;
- vol->upcase = (ntfschar*)ntfs_malloc_nofs(ino->i_size);
+ vol->upcase = (ntfschar*)ntfs_malloc_nofs(i_size);
if (!vol->upcase)
goto iput_upcase_failed;
index = 0;
- max_index = ino->i_size >> PAGE_CACHE_SHIFT;
+ max_index = i_size >> PAGE_CACHE_SHIFT;
size = PAGE_CACHE_SIZE;
while (index < max_index) {
/* Read the upcase table and copy it into the linear buffer. */
ntfs_unmap_page(page);
};
if (size == PAGE_CACHE_SIZE) {
- size = ino->i_size & ~PAGE_CACHE_MASK;
+ size = i_size & ~PAGE_CACHE_MASK;
if (size)
goto read_partial_upcase_page;
}
- vol->upcase_len = ino->i_size >> UCHAR_T_SIZE_BITS;
+ vol->upcase_len = i_size >> UCHAR_T_SIZE_BITS;
ntfs_debug("Read %llu bytes from $UpCase (expected %zu bytes).",
- ino->i_size, 64 * 1024 * sizeof(ntfschar));
+ i_size, 64 * 1024 * sizeof(ntfschar));
iput(ino);
- down(&ntfs_lock);
+ mutex_lock(&ntfs_lock);
if (!default_upcase) {
ntfs_debug("Using volume specified $UpCase since default is "
"not present.");
- up(&ntfs_lock);
+ mutex_unlock(&ntfs_lock);
return TRUE;
}
max = default_upcase_len;
vol->upcase = default_upcase;
vol->upcase_len = max;
ntfs_nr_upcase_users++;
- up(&ntfs_lock);
+ mutex_unlock(&ntfs_lock);
ntfs_debug("Volume specified $UpCase matches default. Using "
"default.");
return TRUE;
}
- up(&ntfs_lock);
+ mutex_unlock(&ntfs_lock);
ntfs_debug("Using volume specified $UpCase since it does not match "
"the default.");
return TRUE;
ntfs_free(vol->upcase);
vol->upcase = NULL;
upcase_failed:
- down(&ntfs_lock);
+ mutex_lock(&ntfs_lock);
if (default_upcase) {
vol->upcase = default_upcase;
vol->upcase_len = default_upcase_len;
ntfs_nr_upcase_users++;
- up(&ntfs_lock);
+ mutex_unlock(&ntfs_lock);
ntfs_error(sb, "Failed to load $UpCase from the volume. Using "
"default.");
return TRUE;
}
- up(&ntfs_lock);
+ mutex_unlock(&ntfs_lock);
ntfs_error(sb, "Failed to initialize upcase table.");
return FALSE;
}
MFT_RECORD *m;
VOLUME_INFORMATION *vi;
ntfs_attr_search_ctx *ctx;
+#ifdef NTFS_RW
+ RESTART_PAGE_HEADER *rp;
+ int err;
+#endif /* NTFS_RW */
ntfs_debug("Entering.");
#ifdef NTFS_RW
es3);
goto iput_mirr_err_out;
}
- sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
+ sb->s_flags |= MS_RDONLY;
ntfs_error(sb, "%s. Mounting read-only%s",
!vol->mftmirr_ino ? es1 : es2, es3);
} else
iput(vol->lcnbmp_ino);
goto bitmap_failed;
}
- if ((vol->nr_clusters + 7) >> 3 > vol->lcnbmp_ino->i_size) {
+ NInoSetSparseDisabled(NTFS_I(vol->lcnbmp_ino));
+ if ((vol->nr_clusters + 7) >> 3 > i_size_read(vol->lcnbmp_ino)) {
iput(vol->lcnbmp_ino);
bitmap_failed:
ntfs_error(sb, "Failed to load $Bitmap.");
unmap_mft_record(NTFS_I(vol->vol_ino));
printk(KERN_INFO "NTFS volume version %i.%i.\n", vol->major_ver,
vol->minor_ver);
+ 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);
+ }
#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";
- static const char *es1b = "Volume has unsupported flags set";
- static const char *es2 = ". Run chkdsk and mount in Windows.";
- const char *es1;
-
- es1 = vol->vol_flags & VOLUME_IS_DIRTY ? es1a : es1b;
+ 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));
+ }
/* 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 |
es1, es2);
goto iput_vol_err_out;
}
- sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
+ sb->s_flags |= MS_RDONLY;
ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
} else
ntfs_warning(sb, "%s. Will not be able to remount "
* Get the inode for the logfile, check it and determine if the volume
* was shutdown cleanly.
*/
- if (!load_and_check_logfile(vol) ||
- !ntfs_is_logfile_clean(vol->logfile_ino)) {
+ rp = NULL;
+ if (!load_and_check_logfile(vol, &rp) ||
+ !ntfs_is_logfile_clean(vol->logfile_ino, rp)) {
static const char *es1a = "Failed to load $LogFile";
static const char *es1b = "$LogFile is not clean";
static const char *es2 = ". Mount in Windows.";
"continue nor on_errors="
"remount-ro was specified%s",
es1, es2);
+ if (vol->logfile_ino) {
+ BUG_ON(!rp);
+ ntfs_free(rp);
+ }
goto iput_logfile_err_out;
}
- sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
+ sb->s_flags |= MS_RDONLY;
+ 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);
+ }
+ ntfs_free(rp);
+#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;
+ }
+ sb->s_flags |= MS_RDONLY;
ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
} else
ntfs_warning(sb, "%s. Will not be able to remount "
ntfs_error(sb, "%s and neither on_errors=continue nor "
"on_errors=remount-ro was specified%s",
es1, es2);
- goto iput_logfile_err_out;
+ goto iput_root_err_out;
}
ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
- sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
+ sb->s_flags |= MS_RDONLY;
/*
* Do not set NVolErrors() because ntfs_remount() might manage
* to set the dirty flag in which case all would be well.
ntfs_error(sb, "%s and neither on_errors=continue nor "
"on_errors=remount-ro was specified%s",
es1, es2);
- goto iput_logfile_err_out;
+ goto iput_root_err_out;
}
ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
- sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
+ sb->s_flags |= MS_RDONLY;
NVolSetErrors(vol);
}
#endif
ntfs_error(sb, "%s and neither on_errors=continue nor "
"on_errors=remount-ro was specified%s",
es1, es2);
- goto iput_logfile_err_out;
+ goto iput_root_err_out;
}
ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
- sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
+ sb->s_flags |= MS_RDONLY;
NVolSetErrors(vol);
}
#endif /* NTFS_RW */
- /* Get the root directory inode. */
- 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;
- }
/* If on NTFS versions before 3.0, we are done. */
- if (vol->major_ver < 3)
+ if (unlikely(vol->major_ver < 3))
return TRUE;
/* NTFS 3.0+ specific initialization. */
/* Get the security descriptors inode. */
ntfs_error(sb, "Failed to load $Secure.");
goto iput_root_err_out;
}
- // FIXME: Initialize security.
+ // TODO: Initialize security.
/* Get the extended system files' directory inode. */
vol->extend_ino = ntfs_iget(sb, FILE_Extend);
if (IS_ERR(vol->extend_ino) || is_bad_inode(vol->extend_ino)) {
es1, es2);
goto iput_quota_err_out;
}
- sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
+ sb->s_flags |= MS_RDONLY;
ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
} else
ntfs_warning(sb, "%s. Will not be able to remount "
goto iput_quota_err_out;
}
ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
- sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
+ sb->s_flags |= MS_RDONLY;
+ NVolSetErrors(vol);
+ }
+ /*
+ * Find the transaction log file ($UsnJrnl), load it if present, check
+ * it, and set it up.
+ */
+ if (!load_and_init_usnjrnl(vol)) {
+ static const char *es1 = "Failed to load $UsnJrnl";
+ static const char *es2 = ". Run chkdsk.";
+
+ /* If a read-write mount, convert it to a read-only mount. */
+ if (!(sb->s_flags & MS_RDONLY)) {
+ if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO |
+ ON_ERRORS_CONTINUE))) {
+ ntfs_error(sb, "%s and neither on_errors="
+ "continue nor on_errors="
+ "remount-ro was specified%s",
+ es1, es2);
+ goto iput_usnjrnl_err_out;
+ }
+ sb->s_flags |= MS_RDONLY;
+ ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
+ } else
+ ntfs_warning(sb, "%s. Will not be able to remount "
+ "read-write%s", es1, es2);
+ /* This will prevent a read-write remount. */
+ NVolSetErrors(vol);
+ }
+ /* If (still) a read-write mount, stamp the transaction log. */
+ if (!(sb->s_flags & MS_RDONLY) && !ntfs_stamp_usnjrnl(vol)) {
+ static const char *es1 = "Failed to stamp transaction log "
+ "($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);
+ sb->s_flags |= MS_RDONLY;
NVolSetErrors(vol);
}
- // TODO: Delete or checkpoint the $UsnJrnl if it exists.
#endif /* NTFS_RW */
return TRUE;
#ifdef NTFS_RW
+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);
iput_quota_err_out:
if (vol->quota_q_ino)
iput(vol->quota_q_ino);
iput_upcase_err_out:
#endif /* NTFS_RW */
vol->upcase_len = 0;
- down(&ntfs_lock);
+ mutex_lock(&ntfs_lock);
if (vol->upcase == default_upcase) {
ntfs_nr_upcase_users--;
vol->upcase = NULL;
}
- up(&ntfs_lock);
+ mutex_unlock(&ntfs_lock);
if (vol->upcase) {
ntfs_free(vol->upcase);
vol->upcase = NULL;
/* NTFS 3.0+ specific. */
if (vol->major_ver >= 3) {
+ 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);
if (vol->quota_q_ino)
ntfs_commit_inode(vol->quota_q_ino);
if (vol->quota_ino)
/* NTFS 3.0+ specific clean up. */
if (vol->major_ver >= 3) {
#ifdef NTFS_RW
+ 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;
+ }
if (vol->quota_q_ino) {
iput(vol->quota_q_ino);
vol->quota_q_ino = NULL;
if (!list_empty(&sb->s_dirty)) {
const char *s1, *s2;
- down(&vol->mft_ino->i_sem);
+ mutex_lock(&vol->mft_ino->i_mutex);
truncate_inode_pages(vol->mft_ino->i_mapping, 0);
- up(&vol->mft_ino->i_sem);
+ mutex_unlock(&vol->mft_ino->i_mutex);
write_inode_now(vol->mft_ino, 1);
if (!list_empty(&sb->s_dirty)) {
static const char *_s1 = "inodes";
* Destroy the global default upcase table if necessary. Also decrease
* the number of upcase users if we are a user.
*/
- down(&ntfs_lock);
+ mutex_lock(&ntfs_lock);
if (vol->upcase == default_upcase) {
ntfs_nr_upcase_users--;
vol->upcase = NULL;
}
if (vol->cluster_size <= 4096 && !--ntfs_nr_compression_users)
free_compression_buffers();
- up(&ntfs_lock);
+ mutex_unlock(&ntfs_lock);
if (vol->upcase) {
ntfs_free(vol->upcase);
vol->upcase = NULL;
struct address_space *mapping = vol->lcnbmp_ino->i_mapping;
filler_t *readpage = (filler_t*)mapping->a_ops->readpage;
struct page *page;
- unsigned long index, max_index;
- unsigned int max_size;
+ pgoff_t index, max_index;
ntfs_debug("Entering.");
/* Serialize accesses to the cluster bitmap. */
*/
max_index = (((vol->nr_clusters + 7) >> 3) + PAGE_CACHE_SIZE - 1) >>
PAGE_CACHE_SHIFT;
- /* Use multiples of 4 bytes. */
- max_size = PAGE_CACHE_SIZE >> 2;
- ntfs_debug("Reading $Bitmap, max_index = 0x%lx, max_size = 0x%x.",
- max_index, max_size);
- for (index = 0UL; index < max_index; index++) {
+ /* 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++) {
unsigned int i;
/*
* Read the page from page cache, getting it from backing store
* the result as all out of range bytes are set to zero by
* ntfs_readpage().
*/
- for (i = 0; i < max_size; i++)
+ for (i = 0; i < PAGE_CACHE_SIZE / 4; i++)
nr_free -= (s64)hweight32(kaddr[i]);
kunmap_atomic(kaddr, KM_USER0);
page_cache_release(page);
/**
* __get_nr_free_mft_records - return the number of free inodes on a volume
* @vol: ntfs volume for which to obtain free inode count
+ * @nr_free: number of mft records in filesystem
+ * @max_index: maximum number of pages containing set bits
*
* 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
*
* NOTE: Caller must hold mftbmp_lock rw_semaphore for reading or writing.
*/
-static unsigned long __get_nr_free_mft_records(ntfs_volume *vol)
+static unsigned long __get_nr_free_mft_records(ntfs_volume *vol,
+ s64 nr_free, const pgoff_t max_index)
{
- s64 nr_free;
u32 *kaddr;
struct address_space *mapping = vol->mftbmp_ino->i_mapping;
filler_t *readpage = (filler_t*)mapping->a_ops->readpage;
struct page *page;
- unsigned long index, max_index;
- unsigned int max_size;
+ pgoff_t index;
ntfs_debug("Entering.");
- /* Number of mft records in file system (at this point in time). */
- nr_free = vol->mft_ino->i_size >> 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 = ((((NTFS_I(vol->mft_ino)->initialized_size >>
- vol->mft_record_size_bits) + 7) >> 3) +
- PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
- /* Use multiples of 4 bytes. */
- max_size = PAGE_CACHE_SIZE >> 2;
+ /* Use multiples of 4 bytes, thus max_size is PAGE_CACHE_SIZE / 4. */
ntfs_debug("Reading $MFT/$BITMAP, max_index = 0x%lx, max_size = "
- "0x%x.", max_index, max_size);
- for (index = 0UL; index < max_index; index++) {
+ "0x%lx.", max_index, PAGE_CACHE_SIZE / 4);
+ for (index = 0; index < max_index; index++) {
unsigned int i;
/*
* Read the page from page cache, getting it from backing store
* the result as all out of range bytes are set to zero by
* ntfs_readpage().
*/
- for (i = 0; i < max_size; i++)
+ for (i = 0; i < PAGE_CACHE_SIZE / 4; i++)
nr_free -= (s64)hweight32(kaddr[i]);
kunmap_atomic(kaddr, KM_USER0);
page_cache_release(page);
*/
static int ntfs_statfs(struct super_block *sb, struct kstatfs *sfs)
{
- ntfs_volume *vol = NTFS_SB(sb);
s64 size;
+ ntfs_volume *vol = NTFS_SB(sb);
+ ntfs_inode *mft_ni = NTFS_I(vol->mft_ino);
+ pgoff_t max_index;
+ unsigned long flags;
ntfs_debug("Entering.");
/* Type of filesystem. */
/* Optimal transfer block size. */
sfs->f_bsize = PAGE_CACHE_SIZE;
/*
- * Total data blocks in file system in units of f_bsize and since
+ * Total data blocks in filesystem in units of f_bsize and since
* 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;
- /* Free data blocks in file system in units of f_bsize. */
+ /* Free data blocks in filesystem in units of f_bsize. */
size = get_nr_free_clusters(vol) << vol->cluster_size_bits >>
PAGE_CACHE_SHIFT;
if (size < 0LL)
sfs->f_bavail = sfs->f_bfree = size;
/* Serialize accesses to the inode bitmap. */
down_read(&vol->mftbmp_lock);
- /* Number of inodes in file system (at this point in time). */
- sfs->f_files = vol->mft_ino->i_size >> vol->mft_record_size_bits;
+ 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);
+ /* Number of inodes in filesystem (at this point in time). */
+ sfs->f_files = size;
/* Free inodes in fs (based on current total count). */
- sfs->f_ffree = __get_nr_free_mft_records(vol);
+ sfs->f_ffree = __get_nr_free_mft_records(vol, size, max_index);
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
- * associated with the file system driver, the latter is already given
- * by the file system type in sfs->f_type. Thus we use the 64-bit
+ * associated with the filesystem driver, the latter is already given
+ * by the filesystem type in sfs->f_type. Thus we use the 64-bit
* 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].
proc. */
};
-
-/**
- * Declarations for NTFS specific export operations (fs/ntfs/namei.c).
- */
-extern struct dentry *ntfs_get_parent(struct dentry *child_dent);
-extern struct dentry *ntfs_get_dentry(struct super_block *sb, void *fh);
-
/**
- * Export operations allowing NFS exporting of mounted NTFS partitions.
- *
- * We use the default ->decode_fh() and ->encode_fh() for now. Note that they
- * use 32 bits to store the inode number which is an unsigned long so on 64-bit
- * architectures is usually 64 bits so it would all fail horribly on huge
- * volumes. I guess we need to define our own encode and decode fh functions
- * that store 64-bit inode numbers at some point but for now we will ignore the
- * problem...
- *
- * We also use the default ->get_name() helper (used by ->decode_fh() via
- * fs/exportfs/expfs.c::find_exported_dentry()) as that is completely fs
- * independent.
- *
- * The default ->get_parent() just returns -EACCES so we have to provide our
- * own and the default ->get_dentry() is incompatible with NTFS due to not
- * allowing the inode number 0 which is used in NTFS for the system file $MFT
- * and due to using iget() whereas NTFS needs ntfs_iget().
- */
-static struct export_operations ntfs_export_ops = {
- .get_parent = ntfs_get_parent, /* Find the parent of a given
- directory. */
- .get_dentry = ntfs_get_dentry, /* Find a dentry for the inode
- given a file handle
- sub-fragment. */
-};
-
-/**
- * ntfs_fill_super - mount an ntfs files system
- * @sb: super block of ntfs file system to mount
+ * ntfs_fill_super - mount an ntfs filesystem
+ * @sb: super block of ntfs filesystem to mount
* @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
- * with the mount otions in @data with the NTFS file system.
+ * with the mount otions in @data with the NTFS filesystem.
*
* If @silent is true, remain silent even if errors are detected. This is used
- * during bootup, when the kernel tries to mount the root file system with all
- * registered file systems one after the other until one succeeds. This implies
- * that all file systems except the correct one will quite correctly and
+ * 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
* expectedly return an error, but nobody wants to see error messages when in
* fact this is what is supposed to happen.
*
ntfs_volume *vol;
struct buffer_head *bh;
struct inode *tmp_ino;
- int result;
+ int blocksize, result;
ntfs_debug("Entering.");
#ifndef NTFS_RW
- sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
+ sb->s_flags |= MS_RDONLY;
#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);
return -ENOMEM;
}
/* Initialize ntfs_volume structure. */
- memset(vol, 0, sizeof(ntfs_volume));
- vol->sb = sb;
- vol->upcase = NULL;
- vol->attrdef = NULL;
- vol->mft_ino = NULL;
- vol->mftbmp_ino = NULL;
+ *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,
+ };
init_rwsem(&vol->mftbmp_lock);
-#ifdef NTFS_RW
- vol->mftmirr_ino = NULL;
- vol->logfile_ino = NULL;
-#endif /* NTFS_RW */
- vol->lcnbmp_ino = NULL;
init_rwsem(&vol->lcnbmp_lock);
- vol->vol_ino = NULL;
- vol->root_ino = NULL;
- vol->secure_ino = NULL;
- vol->extend_ino = NULL;
-#ifdef NTFS_RW
- vol->quota_ino = NULL;
- vol->quota_q_ino = NULL;
-#endif /* NTFS_RW */
- vol->nls_map = NULL;
-
- /*
- * 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.
- */
- vol->fmask = 0177;
- vol->dmask = 0077;
unlock_kernel();
+ /* By default, enable sparse support. */
+ NVolSetSparseEnabled(vol);
+
/* Important to get the mount options dealt with now. */
if (!parse_options(vol, (char*)opt))
goto err_out_now;
+ /* We support sector sizes up to the PAGE_CACHE_SIZE. */
+ if (bdev_hardsect_size(sb->s_bdev) > PAGE_CACHE_SIZE) {
+ if (!silent)
+ ntfs_error(sb, "Device has unsupported sector size "
+ "(%i). The maximum supported sector "
+ "size on this architecture is %lu "
+ "bytes.",
+ bdev_hardsect_size(sb->s_bdev),
+ PAGE_CACHE_SIZE);
+ goto err_out_now;
+ }
/*
- * TODO: Fail safety check. In the future we should really be able to
- * cope with this being the case, but for now just bail out.
+ * Setup the device access block size to NTFS_BLOCK_SIZE or the hard
+ * sector size, whichever is bigger.
*/
- if (bdev_hardsect_size(sb->s_bdev) > NTFS_BLOCK_SIZE) {
+ blocksize = sb_min_blocksize(sb, NTFS_BLOCK_SIZE);
+ if (blocksize < NTFS_BLOCK_SIZE) {
if (!silent)
- ntfs_error(sb, "Device has unsupported hardsect_size.");
+ ntfs_error(sb, "Unable to set device block size.");
goto err_out_now;
}
-
- /* Setup the device access block size to NTFS_BLOCK_SIZE. */
- if (sb_set_blocksize(sb, NTFS_BLOCK_SIZE) != NTFS_BLOCK_SIZE) {
+ 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)) {
if (!silent)
- ntfs_error(sb, "Unable to set block size.");
+ ntfs_error(sb, "Unable to determine device size.");
goto err_out_now;
}
-
- /* Get the size of the device in units of NTFS_BLOCK_SIZE bytes. */
- vol->nr_blocks = sb->s_bdev->bd_inode->i_size >> NTFS_BLOCK_SIZE_BITS;
-
+ vol->nr_blocks = i_size_read(sb->s_bdev->bd_inode) >>
+ sb->s_blocksize_bits;
/* 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;
}
-
/*
- * Extract the data from the boot sector and setup the ntfs super block
+ * Extract the data from the boot sector and setup the ntfs volume
* using it.
*/
result = parse_ntfs_boot_sector(vol, (NTFS_BOOT_SECTOR*)bh->b_data);
-
- /* Initialize the cluster and mft allocators. */
- ntfs_setup_allocators(vol);
-
brelse(bh);
-
if (!result) {
if (!silent)
ntfs_error(sb, "Unsupported NTFS filesystem.");
goto err_out_now;
}
-
/*
- * TODO: When we start coping with sector sizes different from
- * NTFS_BLOCK_SIZE, we now probably need to set the blocksize of the
- * device (probably to NTFS_BLOCK_SIZE).
+ * 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.
*/
-
+ 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);
/* Setup remaining fields in the super block. */
sb->s_magic = NTFS_SB_MAGIC;
-
/*
* Ntfs allows 63 bits for the file size, i.e. correct would be:
* sb->s_maxbytes = ~0ULL >> 1;
* without overflowing the index or to 2^63 - 1, whichever is smaller.
*/
sb->s_maxbytes = MAX_LFS_FILESIZE;
-
+ /* Ntfs measures time in 100ns intervals. */
sb->s_time_gran = 100;
-
/*
* Now load the metadata required for the page cache and our address
* space operations to function. We do this by setting up a specialised
ntfs_error(sb, "Failed to load essential metadata.");
goto iput_tmp_ino_err_out_now;
}
- down(&ntfs_lock);
+ mutex_lock(&ntfs_lock);
/*
* The current mount is a compression user if the cluster size is
* less than or equal 4kiB.
ntfs_error(NULL, "Failed to allocate buffers "
"for compression engine.");
ntfs_nr_compression_users--;
- up(&ntfs_lock);
+ mutex_unlock(&ntfs_lock);
goto iput_tmp_ino_err_out_now;
}
}
if (!default_upcase)
default_upcase = generate_default_upcase();
ntfs_nr_upcase_users++;
- up(&ntfs_lock);
+ mutex_unlock(&ntfs_lock);
/*
* 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.
atomic_inc(&vol->root_ino->i_count);
ntfs_debug("Exiting, status successful.");
/* Release the default upcase if it has no users. */
- down(&ntfs_lock);
+ mutex_lock(&ntfs_lock);
if (!--ntfs_nr_upcase_users && default_upcase) {
ntfs_free(default_upcase);
default_upcase = NULL;
}
- up(&ntfs_lock);
+ mutex_unlock(&ntfs_lock);
sb->s_export_op = &ntfs_export_ops;
lock_kernel();
return 0;
/* NTFS 3.0+ specific clean up. */
if (vol->major_ver >= 3) {
#ifdef NTFS_RW
+ 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;
+ }
if (vol->quota_q_ino) {
iput(vol->quota_q_ino);
vol->quota_q_ino = NULL;
vol->attrdef = NULL;
}
vol->upcase_len = 0;
- down(&ntfs_lock);
+ mutex_lock(&ntfs_lock);
if (vol->upcase == default_upcase) {
ntfs_nr_upcase_users--;
vol->upcase = NULL;
}
- up(&ntfs_lock);
+ mutex_unlock(&ntfs_lock);
if (vol->upcase) {
ntfs_free(vol->upcase);
vol->upcase = NULL;
* Decrease the number of upcase users and destroy the global default
* upcase table if necessary.
*/
- down(&ntfs_lock);
+ mutex_lock(&ntfs_lock);
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();
- up(&ntfs_lock);
+ mutex_unlock(&ntfs_lock);
iput_tmp_ino_err_out_now:
iput(tmp_ino);
if (vol->mft_ino && vol->mft_ino != tmp_ino)
* strings of the maximum length allowed by NTFS, which is NTFS_MAX_NAME_LEN
* (255) Unicode characters + a terminating NULL Unicode character.
*/
-kmem_cache_t *ntfs_name_cache;
+struct kmem_cache *ntfs_name_cache;
-/* Slab caches for efficient allocation/deallocation of of inodes. */
-kmem_cache_t *ntfs_inode_cache;
-kmem_cache_t *ntfs_big_inode_cache;
+/* Slab caches for efficient allocation/deallocation of inodes. */
+struct kmem_cache *ntfs_inode_cache;
+struct kmem_cache *ntfs_big_inode_cache;
/* Init once constructor for the inode slab cache. */
-static void ntfs_big_inode_init_once(void *foo, kmem_cache_t *cachep,
+static void ntfs_big_inode_init_once(void *foo, struct kmem_cache *cachep,
unsigned long flags)
{
ntfs_inode *ni = (ntfs_inode *)foo;
* Slab caches to optimize allocations and deallocations of attribute search
* contexts and index contexts, respectively.
*/
-kmem_cache_t *ntfs_attr_ctx_cache;
-kmem_cache_t *ntfs_index_ctx_cache;
+struct kmem_cache *ntfs_attr_ctx_cache;
+struct kmem_cache *ntfs_index_ctx_cache;
-/* Driver wide semaphore. */
-DECLARE_MUTEX(ntfs_lock);
+/* Driver wide mutex. */
+DEFINE_MUTEX(ntfs_lock);
static struct super_block *ntfs_get_sb(struct file_system_type *fs_type,
int flags, const char *dev_name, void *data)
ntfs_inode_cache = kmem_cache_create(ntfs_inode_cache_name,
sizeof(ntfs_inode), 0,
- SLAB_RECLAIM_ACCOUNT, NULL, NULL);
+ SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD, NULL, NULL);
if (!ntfs_inode_cache) {
printk(KERN_CRIT "NTFS: Failed to create %s!\n",
ntfs_inode_cache_name);
ntfs_big_inode_cache = kmem_cache_create(ntfs_big_inode_cache_name,
sizeof(big_ntfs_inode), 0,
- SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT,
+ SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD,
ntfs_big_inode_init_once, NULL);
if (!ntfs_big_inode_cache) {
printk(KERN_CRIT "NTFS: Failed to create %s!\n",
ntfs_debug("NTFS driver registered successfully.");
return 0; /* Success! */
}
- printk(KERN_CRIT "NTFS: Failed to register NTFS file system driver!\n");
+ printk(KERN_CRIT "NTFS: Failed to register NTFS filesystem driver!\n");
sysctl_err_out:
kmem_cache_destroy(ntfs_big_inode_cache);
kmem_cache_destroy(ntfs_index_ctx_cache);
ictx_err_out:
if (!err) {
- printk(KERN_CRIT "NTFS: Aborting NTFS file system driver "
+ printk(KERN_CRIT "NTFS: Aborting NTFS filesystem driver "
"registration...\n");
err = -ENOMEM;
}
}
MODULE_AUTHOR("Anton Altaparmakov <aia21@cantab.net>");
-MODULE_DESCRIPTION("NTFS 1.2/3.x driver - Copyright (c) 2001-2004 Anton Altaparmakov");
+MODULE_DESCRIPTION("NTFS 1.2/3.x driver - Copyright (c) 2001-2006 Anton Altaparmakov");
MODULE_VERSION(NTFS_VERSION);
MODULE_LICENSE("GPL");
#ifdef DEBUG
git://git.onelab.eu / linux-2.6.git / blobdiff