/*
* super.c - NTFS kernel super block handling. Part of the Linux-NTFS project.
*
- * Copyright (c) 2001-2004 Anton Altaparmakov
+ * Copyright (c) 2001-2007 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 <linux/backing-dev.h>
#include <linux/buffer_head.h>
#include <linux/vfs.h>
+#include <linux/moduleparam.h>
+#include <linux/smp_lock.h>
-#include "ntfs.h"
#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. */
+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. */
*
* Copied from old ntfs driver (which copied from vfat driver).
*/
-static int simple_getbool(char *s, BOOL *setval)
+static int simple_getbool(char *s, bool *setval)
{
if (s) {
if (!strcmp(s, "1") || !strcmp(s, "yes") || !strcmp(s, "true"))
- *setval = TRUE;
+ *setval = true;
else if (!strcmp(s, "0") || !strcmp(s, "no") ||
!strcmp(s, "false"))
- *setval = FALSE;
+ *setval = false;
else
return 0;
} else
- *setval = TRUE;
+ *setval = true;
return 1;
}
*
* Parse the recognized options in @opt for the ntfs volume described by @vol.
*/
-static BOOL parse_options(ntfs_volume *vol, char *opt)
+static bool parse_options(ntfs_volume *vol, char *opt)
{
char *p, *v, *ov;
static char *utf8 = "utf8";
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; \
+ bool val; \
if (!simple_getbool(v, &val)) \
goto needs_bool; \
variable = val; \
ntfs_debug("Entering with mount options string: %s", opt);
while ((p = strsep(&opt, ","))) {
if ((v = strchr(p, '=')))
- *v++ = '\0';
+ *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_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"))
if (!old_nls) {
ntfs_error(vol->sb, "NLS character set "
"%s not found.", v);
- return FALSE;
+ return false;
}
ntfs_error(vol->sb, "NLS character set %s not "
"found. Using previous one %s.",
unload_nls(old_nls);
}
} else if (!strcmp(p, "utf8")) {
- BOOL val = FALSE;
+ bool val = false;
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)
- val = TRUE;
+ val = true;
else if (!simple_getbool(v, &val))
goto needs_bool;
if (val) {
}
no_mount_options:
if (errors && !sloppy)
- return FALSE;
+ return false;
if (sloppy)
ntfs_warning(vol->sb, "Sloppy option given. Ignoring "
"unrecognized mount option(s) and continuing.");
if (!on_errors) {
ntfs_error(vol->sb, "Invalid errors option argument "
"or bug in options parser.");
- return FALSE;
+ return false;
}
}
if (nls_map) {
if (vol->nls_map && vol->nls_map != nls_map) {
ntfs_error(vol->sb, "Cannot change NLS character set "
"on remount.");
- return FALSE;
+ return false;
} /* else (!vol->nls_map) */
ntfs_debug("Using NLS character set %s.", nls_map->charset);
vol->nls_map = nls_map;
if (!vol->nls_map) {
ntfs_error(vol->sb, "Failed to load default "
"NLS character set.");
- return FALSE;
+ return false;
}
ntfs_debug("Using default NLS character set (%s).",
vol->nls_map->charset);
mft_zone_multiplier) {
ntfs_error(vol->sb, "Cannot change mft_zone_multiplier "
"on remount.");
- return FALSE;
+ return false;
}
if (mft_zone_multiplier < 1 || mft_zone_multiplier > 4) {
ntfs_error(vol->sb, "Invalid mft_zone_multiplier. "
else
NVolClearCaseSensitive(vol);
}
- return TRUE;
+ 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);
- return FALSE;
+ return false;
needs_bool:
ntfs_error(vol->sb, "The %s option requires a boolean argument.", p);
- return FALSE;
+ return false;
needs_val:
ntfs_error(vol->sb, "Invalid %s option argument: %s", p, ov);
- return FALSE;
+ return false;
+}
+
+#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
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;
-#else /* ! NTFS_RW */
+ /* 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,
- * make sure there aren't any volume errors and empty the lofgile.
+ * 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
+ * have occured.
*/
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;
+ }
+ 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 "
+ "(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)) {
+ 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 $LogFile%s",
es);
NVolSetErrors(vol);
return -EROFS;
}
+ if (!ntfs_mark_quotas_out_of_date(vol)) {
+ ntfs_error(sb, "Failed to mark quotas out of date%s",
+ es);
+ NVolSetErrors(vol);
+ return -EROFS;
+ }
+ if (!ntfs_stamp_usnjrnl(vol)) {
+ ntfs_error(sb, "Failed to stamp transation log "
+ "($UsnJrnl)%s", es);
+ NVolSetErrors(vol);
+ return -EROFS;
+ }
+ } else if (!(sb->s_flags & MS_RDONLY) && (*flags & MS_RDONLY)) {
+ /* Remounting read-only. */
+ if (!NVolErrors(vol)) {
+ if (ntfs_clear_volume_flags(vol, VOLUME_IS_DIRTY))
+ ntfs_warning(sb, "Failed to clear dirty bit "
+ "in volume information "
+ "flags. Run chkdsk.");
+ }
}
- // TODO: For now we enforce no atime and dir atime updates as they are
- // not implemented.
- *flags |= MS_NOATIME | MS_NODIRATIME;
-#endif /* ! NTFS_RW */
-
- // FIXME/TODO: If left like this we will have problems with rw->ro and
- // ro->rw, as well as with sync->async and vice versa remounts.
- // Note: The VFS already checks that there are no pending deletes and
- // no open files for writing. So we only need to worry about dirty
- // inode pages and dirty system files (which include dirty inodes).
- // Either handle by flushing the whole volume NOW or by having the
- // write routines work on MS_RDONLY fs and guarantee we don't mark
- // anything as dirty if MS_RDONLY is set. That way the dirty data
- // would get flushed but no new dirty data would appear. This is
- // probably best but we need to be careful not to mark anything dirty
- // or the MS_RDONLY will be leaking writes.
+#endif /* NTFS_RW */
// TODO: Deal with *flags.
* 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.
- * @silent: If TRUE, all output will be silenced.
+ * @silent: If 'true', all output will be silenced.
*
* is_boot_sector_ntfs() checks whether the boot sector @b is a valid NTFS boot
- * sector. Returns TRUE if it is valid and FALSE if not.
+ * sector. Returns 'true' if it is valid and 'false' if not.
*
* @sb is only needed for warning/error output, i.e. it can be NULL when silent
- * is TRUE.
+ * is 'true'.
*/
-static BOOL is_boot_sector_ntfs(const struct super_block *sb,
- const NTFS_BOOT_SECTOR *b, const BOOL silent)
+static bool is_boot_sector_ntfs(const struct super_block *sb,
+ const NTFS_BOOT_SECTOR *b, const bool silent)
{
/*
* 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) {
- u32 i, *u;
- for (i = 0, u = (u32*)b; u < (u32*)(&b->checksum); ++u)
+ 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)
goto not_ntfs;
/* Check bytes per sector value is between 256 and 4096. */
- if (le16_to_cpu(b->bpb.bytes_per_sector) < 0x100 ||
+ 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. */
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;
+ return true;
not_ntfs:
- return FALSE;
+ return false;
}
/**
{
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)) {
* @b: boot sector to parse
*
* Parse the ntfs boot sector @b and store all imporant information therein in
- * the ntfs super block @vol. Return TRUE on success and FALSE on error.
+ * the ntfs super block @vol. Return 'true' on success and 'false' on error.
*/
-static BOOL parse_ntfs_boot_sector(ntfs_volume *vol, const NTFS_BOOT_SECTOR *b)
+static bool parse_ntfs_boot_sector(ntfs_volume *vol, const NTFS_BOOT_SECTOR *b)
{
unsigned int sectors_per_cluster_bits, nr_hidden_sects;
int clusters_per_mft_record, clusters_per_index_record;
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.");
- return FALSE;
+ 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;
ntfs_debug("clusters_per_mft_record = %i (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) {
+ 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, 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("clusters_per_index_record = %i (0x%x)",
clusters_per_index_record, 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->number_of_sectors) >> sectors_per_cluster_bits;
if ((u64)ll >= 1ULL << 32) {
- ntfs_error(vol->sb, "Cannot handle 64-bit clusters. Sorry.");
- return FALSE;
+ ntfs_error(vol->sb, "Cannot handle 64-bit clusters. Sorry.");
+ return false;
}
vol->nr_clusters = ll;
ntfs_debug("vol->nr_clusters = 0x%llx", (long long)vol->nr_clusters);
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.",
+ "large for this architecture. "
+ "Maximum supported is 2TiB. Sorry.",
(unsigned long long)ll >> (40 -
vol->cluster_size_bits));
- return FALSE;
+ return false;
}
}
ll = sle64_to_cpu(b->mft_lcn);
if (ll >= vol->nr_clusters) {
- ntfs_error(vol->sb, "MFT LCN is beyond end of volume. Weird.");
- return FALSE;
+ 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.");
- return FALSE;
+ 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;
ntfs_debug("vol->mftmirr_lcn = 0x%llx", (long long)vol->mftmirr_lcn);
vol->serial_no = le64_to_cpu(b->volume_serial_number);
ntfs_debug("vol->serial_no = 0x%llx",
(unsigned long long)vol->serial_no);
- /*
- * Determine MFT zone size. This is not strictly the right place to do
- * this, but I am too lazy to create a function especially for it...
- */
- vol->mft_zone_end = vol->nr_clusters;
+ return true;
+}
+
+/**
+ * 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:
- vol->mft_zone_end = vol->mft_zone_end >> 1; /* 50% */
+ mft_zone_size >>= 1; /* 50% */
break;
case 3:
- vol->mft_zone_end = (vol->mft_zone_end +
- (vol->mft_zone_end >> 1)) >> 2; /* 37.5% */
+ mft_zone_size = (mft_zone_size +
+ (mft_zone_size >> 1)) >> 2; /* 37.5% */
break;
case 2:
- vol->mft_zone_end = vol->mft_zone_end >> 2; /* 25% */
+ mft_zone_size >>= 2; /* 25% */
break;
+ /* case 1: */
default:
- vol->mft_zone_multiplier = 1;
- /* Fall through into case 1. */
- case 1:
- vol->mft_zone_end = vol->mft_zone_end >> 3; /* 12.5% */
+ mft_zone_size >>= 3; /* 12.5% */
break;
}
- ntfs_debug("vol->mft_zone_multiplier = 0x%x",
- vol->mft_zone_multiplier);
- vol->mft_zone_start = vol->mft_lcn;
- vol->mft_zone_end += vol->mft_lcn;
+ /* 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",
- (long long)vol->mft_zone_start);
- ntfs_debug("vol->mft_zone_end = 0x%llx", (long long)vol->mft_zone_end);
- return TRUE;
+ (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
*
- * Return TRUE on success or FALSE on error.
+ * Return 'true' on success or 'false' on error.
*/
-static BOOL load_and_init_mft_mirror(ntfs_volume *vol)
+static bool load_and_init_mft_mirror(ntfs_volume *vol)
{
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. */
- return FALSE;
+ return false;
}
/*
* Re-initialize some specifics about $MFTMirr's inode as
/* No VFS initiated operations allowed for $MFTMirr. */
tmp_ino->i_op = &ntfs_empty_inode_ops;
tmp_ino->i_fop = &ntfs_empty_file_ops;
- /* Put back our special address space operations. */
- tmp_ino->i_mapping->a_ops = &ntfs_mft_aops;
+ /* 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);
+ NInoSetSparseDisabled(tmp_ni);
/*
- * Set up our little cheat allowing us to reuse the async io
+ * 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;
- return TRUE;
+ ntfs_debug("Done.");
+ return true;
}
/**
* check_mft_mirror - compare contents of the mft mirror with the mft
* @vol: ntfs super block describing device whose mft mirror to check
*
- * Return TRUE on success or FALSE on error.
+ * Return 'true' on success or 'false' on error.
+ *
+ * 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.
*/
-static BOOL check_mft_mirror(ntfs_volume *vol)
+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;
- run_list_element *rl, rl2[2];
+ runlist_element *rl, rl2[2];
+ pgoff_t index;
int mrecs_per_page, i;
ntfs_debug("Entering.");
index);
if (IS_ERR(mft_page)) {
ntfs_error(sb, "Failed to read $MFT.");
- return FALSE;
+ return false;
}
kmft = page_address(mft_page);
/* Get the $MFTMirr page. */
kmirr = page_address(mirr_page);
++index;
}
- /* Make sure the record is ok. */
- if (ntfs_is_baad_recordp(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(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. */
ntfs_unmap_page(mft_page);
ntfs_unmap_page(mirr_page);
- /* Construct the mft mirror run list by hand. */
+ /* 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 +
rl2[1].length = 0;
/*
* Because we have just read all of the mft mirror, we know we have
- * mapped the full run list for it.
+ * mapped the full runlist for it.
*/
mirr_ni = NTFS_I(vol->mftmirr_ino);
- down_read(&mirr_ni->run_list.lock);
- rl = mirr_ni->run_list.rl;
- /* Compare the two run lists. They must be identical. */
+ 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->run_list.lock);
- return FALSE;
+ up_read(&mirr_ni->runlist.lock);
+ return false;
}
} while (rl2[i++].length);
- up_read(&mirr_ni->run_list.lock);
+ up_read(&mirr_ni->runlist.lock);
ntfs_debug("Done.");
- return TRUE;
+ return true;
}
/**
* load_and_check_logfile - load and check the logfile inode for a volume
* @vol: ntfs super block describing device whose logfile to load
*
- * Return TRUE on success or FALSE on error.
+ * 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;
if (!IS_ERR(tmp_ino))
iput(tmp_ino);
/* Caller will display error message. */
- return FALSE;
+ 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;
+ return false;
}
+ NInoSetSparseDisabled(NTFS_I(tmp_ino));
vol->logfile_ino = tmp_ino;
ntfs_debug("Done.");
- return TRUE;
+ 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
+ *
+ * Return 'true' on success or 'false' on error. If $Quota is not present, we
+ * leave vol->quota_ino as NULL and return success.
+ */
+static bool load_and_init_quota(ntfs_volume *vol)
+{
+ MFT_REF mref;
+ struct inode *tmp_ino;
+ ntfs_name *name = NULL;
+ static const ntfschar Quota[7] = { const_cpu_to_le16('$'),
+ const_cpu_to_le16('Q'), const_cpu_to_le16('u'),
+ const_cpu_to_le16('o'), const_cpu_to_le16('t'),
+ const_cpu_to_le16('a'), 0 };
+ static ntfschar Q[3] = { const_cpu_to_le16('$'),
+ const_cpu_to_le16('Q'), 0 };
+
+ ntfs_debug("Entering.");
+ /*
+ * Find the inode number for the quota file by looking up the filename
+ * $Quota in the extended system files directory $Extend.
+ */
+ mutex_lock(&vol->extend_ino->i_mutex);
+ mref = ntfs_lookup_inode_by_name(NTFS_I(vol->extend_ino), Quota, 6,
+ &name);
+ mutex_unlock(&vol->extend_ino->i_mutex);
+ if (IS_ERR_MREF(mref)) {
+ /*
+ * If the file does not exist, quotas are disabled and have
+ * never been enabled on this volume, just return success.
+ */
+ if (MREF_ERR(mref) == -ENOENT) {
+ ntfs_debug("$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);
+ return true;
+ }
+ /* A real error occured. */
+ ntfs_error(vol->sb, "Failed to find inode number for $Quota.");
+ 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 (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.");
+ return false;
+ }
+ 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.");
+ return false;
+ }
+ vol->quota_q_ino = tmp_ino;
+ ntfs_debug("Done.");
+ 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
+ *
+ * Return 'true' on success or 'false' on error.
+ */
+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;
+ pgoff_t index, max_index;
+ 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;
+ }
+ NInoSetSparseDisabled(NTFS_I(ino));
+ /* The size of FILE_AttrDef must be above 0 and fit inside 31 bits. */
+ i_size = i_size_read(ino);
+ if (i_size <= 0 || i_size > 0x7fffffff)
+ goto iput_failed;
+ vol->attrdef = (ATTR_DEF*)ntfs_malloc_nofs(i_size);
+ if (!vol->attrdef)
+ goto iput_failed;
+ index = 0;
+ 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. */
+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) {
+ size = i_size & ~PAGE_CACHE_MASK;
+ if (size)
+ goto read_partial_attrdef_page;
+ }
+ vol->attrdef_size = i_size;
+ ntfs_debug("Read %llu bytes from $AttrDef.", i_size);
+ iput(ino);
+ return true;
+free_iput_failed:
+ ntfs_free(vol->attrdef);
+ vol->attrdef = NULL;
+iput_failed:
+ iput(ino);
+failed:
+ ntfs_error(sb, "Failed to initialize attribute definition table.");
+ return false;
}
#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
*
- * Return TRUE on success or FALSE on error.
+ * Return 'true' on success or 'false' on error.
*/
-static BOOL load_and_init_upcase(ntfs_volume *vol)
+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(uchar_t).
+ * be zero and must be a multiple of sizeof(ntfschar).
*/
- if (!ino->i_size || ino->i_size & (sizeof(uchar_t) - 1) ||
- ino->i_size > 64ULL * 1024 * sizeof(uchar_t))
+ 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 = (uchar_t*)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;
- ntfs_debug("Read %llu bytes from $UpCase (expected %u bytes).",
- ino->i_size, 64 * 1024 * sizeof(uchar_t));
+ vol->upcase_len = i_size >> UCHAR_T_SIZE_BITS;
+ ntfs_debug("Read %llu bytes from $UpCase (expected %zu bytes).",
+ 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);
- return TRUE;
+ mutex_unlock(&ntfs_lock);
+ return true;
}
max = default_upcase_len;
if (max > vol->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;
+ return true;
}
- up(&ntfs_lock);
+ mutex_unlock(&ntfs_lock);
ntfs_debug("Using volume specified $UpCase since it does not match "
"the default.");
- return TRUE;
+ return true;
iput_upcase_failed:
iput(ino);
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;
+ return true;
}
- up(&ntfs_lock);
- ntfs_error(sb, "Failed to initialized upcase table.");
- return FALSE;
+ mutex_unlock(&ntfs_lock);
+ ntfs_error(sb, "Failed to initialize upcase table.");
+ return false;
}
+/*
+ * 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;
+
/**
* 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.
*
- * Return TRUE on success or FALSE on error.
+ * Return 'true' on success or 'false' on error.
*/
-static BOOL load_system_files(ntfs_volume *vol)
+static bool load_system_files(ntfs_volume *vol)
{
struct super_block *sb = vol->sb;
- struct inode *tmp_ino;
MFT_RECORD *m;
VOLUME_INFORMATION *vi;
- attr_search_context *ctx;
+ 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
ntfs_error(sb, "Failed to load $MFT/$BITMAP attribute.");
goto iput_mirr_err_out;
}
+ 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);
/* 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
iput(vol->lcnbmp_ino);
goto bitmap_failed;
}
- if ((vol->nr_clusters + 7) >> 3 > vol->lcnbmp_ino->i_size) {
+ 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);
+
+ 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.");
- goto iput_mirr_err_out;
+ goto iput_attrdef_err_out;
}
/*
* Get the volume inode and setup our cache of the volume flags and
iput(vol->vol_ino);
goto volume_failed;
}
- if (!(ctx = get_attr_search_ctx(NTFS_I(vol->vol_ino), m))) {
+ 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 (!lookup_attr(AT_VOLUME_INFORMATION, NULL, 0, 0, 0, NULL, 0, ctx) ||
- ctx->attr->non_resident || ctx->attr->flags) {
+ if (ntfs_attr_lookup(AT_VOLUME_INFORMATION, NULL, 0, 0, 0, NULL, 0,
+ ctx) || ctx->attr->non_resident || ctx->attr->flags) {
err_put_vol:
- put_attr_search_ctx(ctx);
+ ntfs_attr_put_search_ctx(ctx);
get_ctx_vol_failed:
unmap_mft_record(NTFS_I(vol->vol_ino));
goto iput_volume_failed;
le32_to_cpu(ctx->attr->data.resident.value_length) >
(u8*)ctx->attr + le32_to_cpu(ctx->attr->length))
goto err_put_vol;
- /* Setup volume flags and version. */
+ /* 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;
- put_attr_search_ctx(ctx);
+ ntfs_attr_put_search_ctx(ctx);
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 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 |
+ 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;
+ }
+ 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);
+ /*
+ * 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.
*/
- if (!load_and_check_logfile(vol) ||
- !ntfs_is_logfile_clean(vol->logfile_ino)) {
- static const char *es1 = "Failed to load $LogFile";
- static const char *es2 = "$LogFile is not clean";
- static const char *es3 = ". Mount in Windows.";
+ 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.";
+ 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 |
ntfs_error(sb, "%s and neither on_errors="
"continue nor on_errors="
"remount-ro was specified%s",
- !vol->logfile_ino ? es1 : es2,
- es3);
+ 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;
- ntfs_error(sb, "%s. Mounting read-only%s",
- !vol->logfile_ino ? es1 : es2, es3);
+ 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",
- !vol->logfile_ino ? es1 : es2, es3);
+ "read-write%s", es1, es2);
/* This will prevent a read-write remount. */
NVolSetErrors(vol);
- /* If a read-write mount, empty the logfile. */
- } else 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);
- goto iput_logfile_err_out;
- }
- sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
- ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
- /* This will prevent a read-write remount. */
- NVolSetErrors(vol);
- }
-#endif
- /*
- * Get the inode for the attribute definitions file and parse the
- * attribute definitions.
- */
- tmp_ino = ntfs_iget(sb, FILE_AttrDef);
- if (IS_ERR(tmp_ino) || is_bad_inode(tmp_ino)) {
- if (!IS_ERR(tmp_ino))
- iput(tmp_ino);
- ntfs_error(sb, "Failed to load $AttrDef.");
- goto iput_logfile_err_out;
}
- // FIXME: Parse the attribute definitions.
- iput(tmp_ino);
- /* Get the root directory inode. */
+ 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))
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 "
+ "read-write%s", es1, es2);
+ /* This will prevent a read-write remount. */
+ NVolSetErrors(vol);
+ }
+ /* 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);
+ goto iput_root_err_out;
+ }
+ ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
+ 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.
+ */
+ }
+#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);
+ goto iput_root_err_out;
+ }
+ ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
+ sb->s_flags |= MS_RDONLY;
+ 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);
+ goto iput_root_err_out;
+ }
+ ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
+ sb->s_flags |= MS_RDONLY;
+ NVolSetErrors(vol);
+ }
+#endif /* NTFS_RW */
/* If on NTFS versions before 3.0, we are done. */
- if (vol->major_ver < 3)
- return TRUE;
+ if (unlikely(vol->major_ver < 3))
+ return true;
/* NTFS 3.0+ specific initialization. */
/* Get the security descriptors inode. */
vol->secure_ino = ntfs_iget(sb, FILE_Secure);
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. */
- tmp_ino = ntfs_iget(sb, FILE_Extend);
- if (IS_ERR(tmp_ino) || is_bad_inode(tmp_ino)) {
- if (!IS_ERR(tmp_ino))
- iput(tmp_ino);
+ 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;
}
- // FIXME: Do something. E.g. want to delete the $UsnJrnl if exists.
- // Note we might be doing this at the wrong level; we might want to
- // d_alloc_root() and then do a "normal" open(2) of $Extend\$UsnJrnl
- // rather than using ntfs_iget here, as we don't know the inode number
- // for the files in $Extend directory.
- iput(tmp_ino);
- return TRUE;
+#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 $Quota";
+ static const char *es2 = ". Run chkdsk.";
+
+ /* If a read-write mount, convert it to a read-only mount. */
+ if (!(sb->s_flags & MS_RDONLY)) {
+ if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO |
+ ON_ERRORS_CONTINUE))) {
+ ntfs_error(sb, "%s and neither on_errors="
+ "continue nor on_errors="
+ "remount-ro was specified%s",
+ es1, es2);
+ goto iput_quota_err_out;
+ }
+ sb->s_flags |= MS_RDONLY;
+ ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
+ } else
+ ntfs_warning(sb, "%s. Will not be able to remount "
+ "read-write%s", es1, es2);
+ /* This will prevent a read-write remount. */
+ NVolSetErrors(vol);
+ }
+ /* If (still) a read-write mount, mark the quotas out of date. */
+ if (!(sb->s_flags & MS_RDONLY) &&
+ !ntfs_mark_quotas_out_of_date(vol)) {
+ static const char *es1 = "Failed to mark quotas out of date";
+ static const char *es2 = ". Run chkdsk.";
+
+ /* Convert to a read-only mount. */
+ if (!(vol->on_errors & (ON_ERRORS_REMOUNT_RO |
+ ON_ERRORS_CONTINUE))) {
+ ntfs_error(sb, "%s and neither on_errors=continue nor "
+ "on_errors=remount-ro was specified%s",
+ es1, es2);
+ goto iput_quota_err_out;
+ }
+ ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
+ sb->s_flags |= MS_RDONLY;
+ NVolSetErrors(vol);
+ }
+ /*
+ * Find the transaction log file ($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);
+ }
+#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);
+ 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:
#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;
+ mutex_lock(&ntfs_lock);
+ if (vol->upcase == default_upcase) {
+ ntfs_nr_upcase_users--;
+ vol->upcase = NULL;
+ }
+ mutex_unlock(&ntfs_lock);
+ if (vol->upcase) {
+ ntfs_free(vol->upcase);
+ vol->upcase = NULL;
+ }
iput_mftbmp_err_out:
iput(vol->mftbmp_ino);
iput_mirr_err_out:
if (vol->mftmirr_ino)
iput(vol->mftmirr_ino);
#endif /* NTFS_RW */
- return FALSE;
+ return false;
}
/**
* ntfs_put_super - called by the vfs to unmount a volume
- * @vfs_sb: vfs superblock of volume to unmount
+ * @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 *vfs_sb)
+static void ntfs_put_super(struct super_block *sb)
{
- ntfs_volume *vol = NTFS_SB(vfs_sb);
+ ntfs_volume *vol = NTFS_SB(sb);
ntfs_debug("Entering.");
+#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) {
+ 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_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);
+
+ /*
+ * If a read-write mount and no volume errors have occured, mark the
+ * 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
+ 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 (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->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;
}
+ /*
+ * If any dirty inodes are left, throw away all mft data page cache
+ * pages to allow a clean umount. This should never happen any more
+ * due to mft.c::ntfs_mft_writepage() cleaning all the dirty pages as
+ * the underlying mft records are written out and cleaned. If it does,
+ * happen anyway, we want to know...
+ */
+ ntfs_commit_inode(vol->mft_ino);
+ write_inode_now(vol->mft_ino, 1);
+ if (!list_empty(&sb->s_dirty)) {
+ const char *s1, *s2;
+
+ mutex_lock(&vol->mft_ino->i_mutex);
+ truncate_inode_pages(vol->mft_ino->i_mapping, 0);
+ 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";
+ static const char *_s2 = "";
+ s1 = _s1;
+ s2 = _s2;
+ } else {
+ static const char *_s1 = "mft pages";
+ static const char *_s2 = "They have been thrown "
+ "away. ";
+ s1 = _s1;
+ s2 = _s2;
+ }
+ ntfs_error(sb, "Dirty %s found at umount time. %sYou should "
+ "run chkdsk. Please email "
+ "linux-ntfs-dev@lists.sourceforge.net and say "
+ "that you saw this message. Thank you.", s1,
+ s2);
+ }
#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;
/*
- * Decrease the number of mounts and destroy the global default upcase
- * table if necessary. Also decrease the number of upcase users if we
- * are a user.
+ * Destroy the global default upcase table if necessary. Also decrease
+ * the number of upcase users if we are a user.
*/
- down(&ntfs_lock);
- ntfs_nr_mounts--;
+ 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;
unload_nls(vol->nls_map);
vol->nls_map = NULL;
}
- vfs_sb->s_fs_info = NULL;
+ sb->s_fs_info = NULL;
kfree(vol);
return;
}
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 = vol->nr_mft_records;
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.");
- /*
- * 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_mft_records + 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);
/**
* ntfs_statfs - return information about mounted NTFS volume
- * @sb: super block of mounted volume
+ * @dentry: dentry from mounted volume
* @sfs: statfs structure in which to return the information
*
- * Return information about the mounted NTFS volume @sb in the statfs structure
+ * Return information about the mounted NTFS volume @dentry in the statfs structure
* 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
*
* Return 0 on success or -errno on error.
*/
-static int ntfs_statfs(struct super_block *sb, struct kstatfs *sfs)
+static int ntfs_statfs(struct dentry *dentry, struct kstatfs *sfs)
{
- ntfs_volume *vol = NTFS_SB(sb);
+ struct super_block *sb = dentry->d_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);
- /* Total file nodes in file system (at this moment in time). */
- sfs->f_files = vol->mft_ino->i_size >> vol->mft_record_size_bits;
- /* Free file nodes in fs (based on current total count). */
- sfs->f_ffree = __get_nr_free_mft_records(vol);
+ 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, 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].
return 0;
}
-/**
- * Super operations for mount time when we don't have enough setup to use the
- * proper functions.
- */
-struct super_operations ntfs_mount_sops = {
- .alloc_inode = ntfs_alloc_big_inode, /* VFS: Allocate new inode. */
- .destroy_inode = ntfs_destroy_big_inode, /* VFS: Deallocate inode. */
- .read_inode = ntfs_read_inode_mount, /* VFS: Load inode from disk,
- called from iget(). */
- .clear_inode = ntfs_clear_big_inode, /* VFS: Called when inode is
- removed from memory. */
-};
-
/**
* The complete super operations.
*/
-struct super_operations ntfs_sops = {
+static struct super_operations ntfs_sops = {
.alloc_inode = ntfs_alloc_big_inode, /* VFS: Allocate new inode. */
.destroy_inode = ntfs_destroy_big_inode, /* VFS: Deallocate inode. */
- .put_inode = ntfs_put_inode, /* VFS: Called just before
- the inode reference count
- is decreased. */
#ifdef NTFS_RW
//.dirty_inode = NULL, /* VFS: Called from
// __mark_inode_dirty(). */
- //.write_inode = NULL, /* VFS: Write dirty inode to
- // disk. */
+ .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.
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;
+ /*
+ * 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();
ntfs_debug("Entering.");
#ifndef NTFS_RW
- sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
-#else
- // TODO: For now we enforce no atime and dir atime updates as they are
- // not implemented.
- sb->s_flags |= MS_NOATIME | MS_NODIRATIME;
-#endif
+ 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);
vol = NTFS_SB(sb);
if (!silent)
ntfs_error(sb, "Allocation of NTFS volume structure "
"failed. Aborting mount...");
+ lockdep_on();
return -ENOMEM;
}
/* Initialize ntfs_volume structure. */
- memset(vol, 0, sizeof(ntfs_volume));
- vol->sb = sb;
- vol->upcase = 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->mftmirr_size = 0;
- 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->uid = vol->gid = 0;
- vol->flags = 0;
- vol->on_errors = 0;
- vol->mft_zone_multiplier = 0;
- 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);
-
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
* the inode for $MFT which is sufficient to allow our normal inode
* operations and associated address space operations to function.
*/
- /*
- * Poison vol->mft_ino so we know whether iget() called into our
- * ntfs_read_inode_mount() method.
- */
-#define OGIN ((struct inode*)n2p(le32_to_cpu(0x4e49474f))) /* OGIN */
- vol->mft_ino = OGIN;
- sb->s_op = &ntfs_mount_sops;
- tmp_ino = iget(vol->sb, FILE_MFT);
- if (!tmp_ino || tmp_ino != vol->mft_ino || is_bad_inode(tmp_ino)) {
+ 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.");
- if (tmp_ino && vol->mft_ino == OGIN)
- ntfs_error(sb, "BUG: iget() did not call "
- "ntfs_read_inode_mount() method!\n");
- if (!tmp_ino)
- goto cond_iput_mft_ino_err_out_now;
goto iput_tmp_ino_err_out_now;
}
- /*
- * Note: sb->s_op has already been set to &ntfs_sops by our specialized
- * ntfs_read_inode_mount() method when it was invoked by iget().
- */
- 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;
}
}
/*
- * Increment the number of mounts and generate the global default
- * upcase table if necessary. Also temporarily increment the number of
- * upcase users to avoid race conditions with concurrent (u)mounts.
+ * 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 (!ntfs_nr_mounts++)
+ 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();
+ lockdep_on();
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) {
- iput(vol->secure_ino);
- vol->secure_ino = NULL;
+#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 (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;
-#ifdef NTFS_RW
- iput(vol->mftmirr_ino);
- vol->mftmirr_ino = NULL;
-#endif /* NTFS_RW */
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;
- if (vol->upcase != default_upcase)
+ mutex_lock(&ntfs_lock);
+ if (vol->upcase == default_upcase) {
+ ntfs_nr_upcase_users--;
+ vol->upcase = NULL;
+ }
+ mutex_unlock(&ntfs_lock);
+ if (vol->upcase) {
ntfs_free(vol->upcase);
- vol->upcase = NULL;
+ 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 mounts and destroy the global default upcase
- * table if necessary.
+ * Decrease the number of upcase users and destroy the global default
+ * upcase table if necessary.
*/
- down(&ntfs_lock);
- ntfs_nr_mounts--;
+ 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);
-cond_iput_mft_ino_err_out_now:
- if (vol->mft_ino && vol->mft_ino != OGIN && vol->mft_ino != tmp_ino) {
+ if (vol->mft_ino && vol->mft_ino != tmp_ino)
iput(vol->mft_ino);
- vol->mft_ino = NULL;
- }
-#undef OGIN
+ vol->mft_ino = NULL;
/*
* This is needed to get ntfs_clear_extent_inode() called for each
* inode we have ever called ntfs_iget()/iput() on, otherwise we A)
}
/* Errors at this stage are irrelevant. */
err_out_now:
+ lock_kernel();
sb->s_fs_info = NULL;
kfree(vol);
ntfs_debug("Failed, returning -EINVAL.");
+ lockdep_on();
return -EINVAL;
}
* 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 cache to optimize allocations and deallocations of attribute search
- * contexts.
+ * Slab caches to optimize allocations and deallocations of attribute search
+ * contexts and index contexts, respectively.
*/
-kmem_cache_t *ntfs_attr_ctx_cache;
+struct kmem_cache *ntfs_attr_ctx_cache;
+struct kmem_cache *ntfs_index_ctx_cache;
-/* A global default upcase table and a corresponding reference count. */
-wchar_t *default_upcase = NULL;
-unsigned long ntfs_nr_upcase_users = 0;
-
-/* The number of mounted filesystems. */
-unsigned long ntfs_nr_mounts = 0;
-
-/* 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)
+static int ntfs_get_sb(struct file_system_type *fs_type,
+ int flags, const char *dev_name, void *data, struct vfsmount *mnt)
{
- return get_sb_bdev(fs_type, flags, dev_name, data, ntfs_fill_super);
+ return get_sb_bdev(fs_type, flags, dev_name, data, ntfs_fill_super,
+ mnt);
}
static struct file_system_type ntfs_fs_type = {
};
/* 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";
ntfs_debug("Debug messages are enabled.");
+ ntfs_index_ctx_cache = kmem_cache_create(ntfs_index_ctx_cache_name,
+ sizeof(ntfs_index_context), 0 /* offset */,
+ SLAB_HWCACHE_ALIGN, NULL /* ctor */, NULL /* dtor */);
+ if (!ntfs_index_ctx_cache) {
+ printk(KERN_CRIT "NTFS: Failed to create %s!\n",
+ ntfs_index_ctx_cache_name);
+ goto ictx_err_out;
+ }
ntfs_attr_ctx_cache = kmem_cache_create(ntfs_attr_ctx_cache_name,
- sizeof(attr_search_context), 0 /* offset */,
+ sizeof(ntfs_attr_search_ctx), 0 /* offset */,
SLAB_HWCACHE_ALIGN, NULL /* ctor */, NULL /* dtor */);
if (!ntfs_attr_ctx_cache) {
printk(KERN_CRIT "NTFS: Failed to create %s!\n",
ntfs_attr_ctx_cache_name);
- goto ctx_err_out;
+ goto actx_err_out;
}
ntfs_name_cache = kmem_cache_create(ntfs_name_cache_name,
- (NTFS_MAX_NAME_LEN+1) * sizeof(uchar_t), 0,
+ (NTFS_MAX_NAME_LEN+1) * sizeof(ntfschar), 0,
SLAB_HWCACHE_ALIGN, NULL, NULL);
if (!ntfs_name_cache) {
printk(KERN_CRIT "NTFS: Failed to create %s!\n",
ntfs_inode_cache = kmem_cache_create(ntfs_inode_cache_name,
sizeof(ntfs_inode), 0,
- SLAB_HWCACHE_ALIGN|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_name_cache);
name_err_out:
kmem_cache_destroy(ntfs_attr_ctx_cache);
-ctx_err_out:
+actx_err_out:
+ 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;
}
static void __exit exit_ntfs_fs(void)
{
- int err = 0;
-
ntfs_debug("Unregistering NTFS driver.");
unregister_filesystem(&ntfs_fs_type);
-
- if (kmem_cache_destroy(ntfs_big_inode_cache) && (err = 1))
- printk(KERN_CRIT "NTFS: Failed to destory %s.\n",
- ntfs_big_inode_cache_name);
- if (kmem_cache_destroy(ntfs_inode_cache) && (err = 1))
- printk(KERN_CRIT "NTFS: Failed to destory %s.\n",
- ntfs_inode_cache_name);
- if (kmem_cache_destroy(ntfs_name_cache) && (err = 1))
- printk(KERN_CRIT "NTFS: Failed to destory %s.\n",
- ntfs_name_cache_name);
- if (kmem_cache_destroy(ntfs_attr_ctx_cache) && (err = 1))
- printk(KERN_CRIT "NTFS: Failed to destory %s.\n",
- ntfs_attr_ctx_cache_name);
- if (err)
- printk(KERN_CRIT "NTFS: This causes memory to leak! There is "
- "probably a BUG in the driver! Please report "
- "you saw this message to "
- "linux-ntfs-dev@lists.sourceforge.net\n");
+ 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);
/* Unregister the ntfs sysctls. */
ntfs_sysctl(0);
}
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) 2001-2007 Anton Altaparmakov");
+MODULE_VERSION(NTFS_VERSION);
MODULE_LICENSE("GPL");
#ifdef DEBUG
-MODULE_PARM(debug_msgs, "i");
+module_param(debug_msgs, bool, 0);
MODULE_PARM_DESC(debug_msgs, "Enable debug messages.");
#endif