#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 "dir.h"
+#include "index.h"
/* Number of mounted file systems which have compression enabled. */
static unsigned long ntfs_nr_compression_users;
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)
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
#ifndef NTFS_RW
/* For read-only compiled driver, enforce all read-only flags. */
*flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
-#else /* ! NTFS_RW */
+#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_MUST_MOUNT_RO_MASK) {
+ ntfs_error(sb, "Volume has unsupported flags set and "
+ "is read-only%s", 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;
+ }
+ } 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.
* field. If checksum is zero, no checking is done.
*/
if ((void*)b < (void*)&b->checksum && b->checksum) {
- u32 i, *u;
- for (i = 0, u = (u32*)b; u < (u32*)(&b->checksum); ++u)
+ 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;
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. */
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;
+}
+
+/**
+ * setup_lcn_allocator - initialize the cluster allocator
+ * @vol: volume structure for which to setup the lcn allocator
+ *
+ * Setup the cluster (lcn) allocator to the starting values.
+ */
+static void setup_lcn_allocator(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);
+#endif /* NTFS_RW */
}
#ifdef NTFS_RW
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)) {
/* The $MFTMirr, like the $MFT is multi sector transfer protected. */
NInoSetMstProtected(tmp_ni);
/*
- * Set up our little cheat allowing us to reuse the async io
+ * Set up our little cheat allowing us to reuse the async read io
* completion handler for directories.
*/
tmp_ni->itype.index.block_size = vol->mft_record_size;
tmp_ni->itype.index.block_size_bits = vol->mft_record_size_bits;
vol->mftmirr_ino = tmp_ino;
+ ntfs_debug("Done.");
return TRUE;
}
ntfs_inode *mirr_ni;
struct page *mft_page, *mirr_page;
u8 *kmft, *kmirr;
- run_list_element *rl, rl2[2];
+ runlist_element *rl, rl2[2];
int mrecs_per_page, i;
ntfs_debug("Entering.");
++index;
}
/* Make sure the record is ok. */
- if (ntfs_is_baad_recordp(kmft)) {
+ if (ntfs_is_baad_recordp((le32*)kmft)) {
ntfs_error(sb, "Incomplete multi sector transfer "
"detected in mft record %i.", i);
mm_unmap_out:
ntfs_unmap_page(mft_page);
return FALSE;
}
- if (ntfs_is_baad_recordp(kmirr)) {
+ if (ntfs_is_baad_recordp((le32*)kmirr)) {
ntfs_error(sb, "Incomplete multi sector transfer "
"detected in mft mirror record %i.", i);
goto mm_unmap_out;
ntfs_unmap_page(mft_page);
ntfs_unmap_page(mirr_page);
- /* Construct the mft mirror run list by hand. */
+ /* Construct the mft mirror runlist by hand. */
rl2[0].vcn = 0;
rl2[0].lcn = vol->mftmirr_lcn;
rl2[0].length = (vol->mftmirr_size * vol->mft_record_size +
rl2[1].length = 0;
/*
* Because we have just read all of the mft mirror, we know we have
- * mapped the full run list for it.
+ * mapped the full runlist for it.
*/
mirr_ni = NTFS_I(vol->mftmirr_ino);
- down_read(&mirr_ni->run_list.lock);
- rl = mirr_ni->run_list.rl;
- /* Compare the two run lists. They must be identical. */
+ down_read(&mirr_ni->runlist.lock);
+ rl = mirr_ni->runlist.rl;
+ /* Compare the two runlists. They must be identical. */
i = 0;
do {
if (rl2[i].vcn != rl[i].vcn || rl2[i].lcn != rl[i].lcn ||
rl2[i].length != rl[i].length) {
ntfs_error(sb, "$MFTMirr location mismatch. "
"Run chkdsk.");
- up_read(&mirr_ni->run_list.lock);
+ 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_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 $Extend.
+ */
+ down(&vol->extend_ino->i_sem);
+ mref = ntfs_lookup_inode_by_name(NTFS_I(vol->extend_ino), Quota, 6,
+ &name);
+ up(&vol->extend_ino->i_sem);
+ if (IS_ERR_MREF(mref)) {
+ /*
+ * If the file does not exist, quotas are disabled and have
+ * never been enabled on this volume, just return success.
+ */
+ if (MREF_ERR(mref) == -ENOENT) {
+ ntfs_debug("$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. */
+ if (name)
+ 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_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)
+{
+ struct super_block *sb = vol->sb;
+ struct inode *ino;
+ struct page *page;
+ unsigned long 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;
+ }
+ /* The size of FILE_AttrDef must be above 0 and fit inside 31 bits. */
+ if (!ino->i_size || ino->i_size > 0x7fffffff)
+ goto iput_failed;
+ vol->attrdef = (ATTR_DEF*)ntfs_malloc_nofs(ino->i_size);
+ if (!vol->attrdef)
+ goto iput_failed;
+ index = 0;
+ max_index = ino->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 = ino->i_size & ~PAGE_CACHE_MASK;
+ if (size)
+ goto read_partial_attrdef_page;
+ }
+ vol->attrdef_size = ino->i_size;
+ ntfs_debug("Read %llu bytes from $AttrDef.", ino->i_size);
+ 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 */
/**
}
/*
* 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))
+ if (!ino->i_size || ino->i_size & (sizeof(ntfschar) - 1) ||
+ ino->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(ino->i_size);
if (!vol->upcase)
goto iput_upcase_failed;
index = 0;
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));
+ ntfs_debug("Read %llu bytes from $UpCase (expected %zu bytes).",
+ ino->i_size, 64 * 1024 * sizeof(ntfschar));
iput(ino);
down(&ntfs_lock);
if (!default_upcase) {
return TRUE;
}
up(&ntfs_lock);
- ntfs_error(sb, "Failed to initialized upcase table.");
+ ntfs_error(sb, "Failed to initialize upcase table.");
return FALSE;
}
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;
ntfs_debug("Entering.");
#ifdef NTFS_RW
/* 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);
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);
#ifdef NTFS_RW
+ /* Make sure that no unsupported volume flags are set. */
+ if (vol->vol_flags & VOLUME_MUST_MOUNT_RO_MASK) {
+ static const char *es1a = "Volume is dirty";
+ static const char *es1b = "Volume has unsupported flags set";
+ static const char *es2 = ". Run chkdsk and mount in Windows.";
+ const char *es1;
+
+ es1 = vol->vol_flags & VOLUME_IS_DIRTY ? es1a : es1b;
+ /* 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 | MS_NOATIME | MS_NODIRATIME;
+ 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.";
+ 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);
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);
+ 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.";
+ }
+ /* 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 |
es1, es2);
goto iput_logfile_err_out;
}
+ ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
+ /*
+ * 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_logfile_err_out;
+ }
ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
- /* This will prevent a read-write remount. */
+ sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
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;
+ /* 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_logfile_err_out;
+ }
+ ntfs_error(sb, "%s. Mounting read-only%s", es1, es2);
+ sb->s_flags |= MS_RDONLY | MS_NOATIME | MS_NODIRATIME;
+ NVolSetErrors(vol);
}
- // FIXME: Parse the attribute definitions.
- iput(tmp_ino);
+#endif /* NTFS_RW */
/* Get the root directory inode. */
vol->root_ino = ntfs_iget(sb, FILE_root);
if (IS_ERR(vol->root_ino) || is_bad_inode(vol->root_ino)) {
}
// FIXME: 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);
+#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 | MS_NOATIME | MS_NODIRATIME;
+ 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 | MS_NOATIME | MS_NODIRATIME;
+ NVolSetErrors(vol);
+ }
+ // TODO: Delete or checkpoint the $UsnJrnl if it exists.
+#endif /* NTFS_RW */
return TRUE;
+#ifdef NTFS_RW
+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;
+ down(&ntfs_lock);
+ if (vol->upcase == default_upcase) {
+ ntfs_nr_upcase_users--;
+ vol->upcase = NULL;
+ }
+ up(&ntfs_lock);
+ if (vol->upcase) {
+ ntfs_free(vol->upcase);
+ vol->upcase = NULL;
+ }
iput_mftbmp_err_out:
iput(vol->mftbmp_ino);
iput_mirr_err_out:
/**
* 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->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->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;
+
+ down(&vol->mft_ino->i_sem);
+ truncate_inode_pages(vol->mft_ino->i_mapping, 0);
+ up(&vol->mft_ino->i_sem);
+ 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--;
if (vol->upcase == default_upcase) {
ntfs_nr_upcase_users--;
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;
}
*/
static unsigned long __get_nr_free_mft_records(ntfs_volume *vol)
{
- s64 nr_free = vol->nr_mft_records;
+ s64 nr_free;
u32 *kaddr;
struct address_space *mapping = vol->mftbmp_ino->i_mapping;
filler_t *readpage = (filler_t*)mapping->a_ops->readpage;
unsigned int max_size;
ntfs_debug("Entering.");
+ /* Number of mft records in file system (at this point in time). */
+ nr_free = vol->mft_ino->i_size >> vol->mft_record_size_bits;
/*
- * Convert the 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.
+ * 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 = (((vol->nr_mft_records + 7) >> 3) + PAGE_CACHE_SIZE - 1) >>
- PAGE_CACHE_SHIFT;
+ max_index = ((((NTFS_I(vol->mft_ino)->initialized_size >>
+ vol->mft_record_size_bits) + 7) >> 3) +
+ PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
/* Use multiples of 4 bytes. */
max_size = PAGE_CACHE_SIZE >> 2;
ntfs_debug("Reading $MFT/$BITMAP, max_index = 0x%lx, max_size = "
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). */
+ /* Number of inodes in file system (at this point in time). */
+ sfs->f_files = vol->mft_ino->i_size >> vol->mft_record_size_bits;
+ /* Free inodes in fs (based on current total count). */
sfs->f_ffree = __get_nr_free_mft_records(vol);
up_read(&vol->mftbmp_lock);
/*
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.
*/
#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.
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
+#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);
memset(vol, 0, sizeof(ntfs_volume));
vol->sb = sb;
vol->upcase = NULL;
+ vol->attrdef = NULL;
vol->mft_ino = NULL;
vol->mftbmp_ino = NULL;
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;
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->extend_ino = NULL;
+#ifdef NTFS_RW
+ vol->quota_ino = NULL;
+ vol->quota_q_ino = NULL;
+#endif /* NTFS_RW */
vol->nls_map = NULL;
/*
vol->fmask = 0177;
vol->dmask = 0077;
+ unlock_kernel();
+
/* Important to get the mount options dealt with now. */
if (!parse_options(vol, (char*)opt))
goto err_out_now;
*/
result = parse_ntfs_boot_sector(vol, (NTFS_BOOT_SECTOR*)bh->b_data);
+ /* Initialize the cluster allocator. */
+ setup_lcn_allocator(vol);
+
brelse(bh);
if (!result) {
* 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);
/*
* The current mount is a compression user if the cluster size is
}
}
/*
- * 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);
/*
* From now on, ignore @silent parameter. If we fail below this line,
}
up(&ntfs_lock);
sb->s_export_op = &ntfs_export_ops;
+ lock_kernel();
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->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)
+ down(&ntfs_lock);
+ if (vol->upcase == default_upcase) {
+ ntfs_nr_upcase_users--;
+ vol->upcase = NULL;
+ }
+ up(&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--;
if (!--ntfs_nr_upcase_users && default_upcase) {
ntfs_free(default_upcase);
default_upcase = NULL;
up(&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.");
}
/*
- * 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;
+kmem_cache_t *ntfs_index_ctx_cache;
/* A global default upcase table and a corresponding reference count. */
-wchar_t *default_upcase = NULL;
+ntfschar *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);
};
/* 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, NULL, NULL);
if (!ntfs_inode_cache) {
printk(KERN_CRIT "NTFS: Failed to create %s!\n",
ntfs_inode_cache_name);
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 "
"registration...\n");
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 (kmem_cache_destroy(ntfs_index_ctx_cache) && (err = 1))
+ printk(KERN_CRIT "NTFS: Failed to destory %s.\n",
+ ntfs_index_ctx_cache_name);
if (err)
printk(KERN_CRIT "NTFS: This causes memory to leak! There is "
"probably a BUG in the driver! Please report "
MODULE_DESCRIPTION("NTFS 1.2/3.x driver - Copyright (c) 2001-2004 Anton Altaparmakov");
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
git://git.onelab.eu / linux-2.6.git / blobdiff