/**
* ntfs_debug_runlist_dump - Dump a runlist.
* @rl:
*
* Description...
*
* Returns:
*/
void ntfs_debug_runlist_dump(const runlist_element *rl)
{
int i = 0;
const char *lcn_str[5] = { "LCN_HOLE ", "LCN_RL_NOT_MAPPED",
"LCN_ENOENT ", "LCN_EINVAL ",
"LCN_unknown " };
ntfs_log_debug("NTFS-fs DEBUG: Dumping runlist (values in hex):\n");
if (!rl) {
ntfs_log_debug("Run list not present.\n");
return;
}
ntfs_log_debug("VCN LCN Run length\n");
do {
LCN lcn = (rl + i)->lcn;
if (lcn < (LCN)0) {
int idx = -lcn - 1;
if (idx > -LCN_EINVAL - 1)
idx = 4;
ntfs_log_debug("%-16llx %s %-16llx%s\n", rl[i].vcn, lcn_str[idx], rl[i].length, rl[i].length ? "" : " (runlist end)");
} else
ntfs_log_debug("%-16llx %-16llx %-16llx%s\n", rl[i].vcn, rl[i].lcn, rl[i].length, rl[i].length ? "" : " (runlist end)");
} while (rl[i++].length);
}
/**
* ntfs_device_size_get - return the size of a device in blocks
* @dev: open device
* @block_size: block size in bytes in which to return the result
*
* Return the number of @block_size sized blocks in the device described by the
* open device @dev.
*
* Adapted from e2fsutils-1.19, Copyright (C) 1995 Theodore Ts'o.
*
* On error return -1 with errno set to the error code.
*/
s64 ntfs_device_size_get(struct ntfs_device *dev, int block_size)
{
s64 high, low;
if (!dev || block_size <= 0 || (block_size - 1) & block_size) {
errno = EINVAL;
return -1;
}
#ifdef BLKGETSIZE64
{ u64 size;
if (dev->d_ops->ioctl(dev, BLKGETSIZE64, &size) >= 0) {
ntfs_log_debug("BLKGETSIZE64 nr bytes = %llu (0x%llx)\n",
(unsigned long long)size,
(unsigned long long)size);
return (s64)size / block_size;
}
}
#endif
#ifdef BLKGETSIZE
{ unsigned long size;
if (dev->d_ops->ioctl(dev, BLKGETSIZE, &size) >= 0) {
ntfs_log_debug("BLKGETSIZE nr 512 byte blocks = %lu (0x%lx)\n",
size, size);
return (s64)size * 512 / block_size;
}
}
#endif
#ifdef FDGETPRM
{ struct floppy_struct this_floppy;
if (dev->d_ops->ioctl(dev, FDGETPRM, &this_floppy) >= 0) {
ntfs_log_debug("FDGETPRM nr 512 byte blocks = %lu (0x%lx)\n",
(unsigned long)this_floppy.size,
(unsigned long)this_floppy.size);
return (s64)this_floppy.size * 512 / block_size;
}
}
#endif
/*
* We couldn't figure it out by using a specialized ioctl,
* so do binary search to find the size of the device.
*/
low = 0LL;
for (high = 1024LL; !ntfs_device_offset_valid(dev, high); high <<= 1)
low = high;
while (low < high - 1LL) {
const s64 mid = (low + high) / 2;
if (!ntfs_device_offset_valid(dev, mid))
low = mid;
else
high = mid;
}
dev->d_ops->seek(dev, 0LL, SEEK_SET);
return (low + 1LL) / block_size;
}
/**
* ntfs_device_block_size_set - set block size of a device
* @dev: open device
* @block_size: block size to set @dev to
*
* On success, return 0.
* On error return -1 with errno set to the error code.
*
* The following error codes are defined:
* EINVAL Input parameter error
* EOPNOTSUPP System does not support BLKBSZSET ioctl
* ENOTTY @dev is a file or a device not supporting BLKBSZSET
*/
int ntfs_device_block_size_set(struct ntfs_device *dev,
int block_size __attribute__((unused)))
{
if (!dev) {
errno = EINVAL;
return -1;
}
#ifdef BLKBSZSET
{
size_t s_block_size = block_size;
if (!dev->d_ops->ioctl(dev, BLKBSZSET, &s_block_size)) {
ntfs_log_debug("Used BLKBSZSET to set block size to "
"%d bytes.\n", block_size);
return 0;
}
/* If not a block device, pretend it was successful. */
if (!NDevBlock(dev))
return 0;
}
#else
/* If not a block device, pretend it was successful. */
if (!NDevBlock(dev))
return 0;
errno = EOPNOTSUPP;
#endif
return -1;
}
/**
* ntfs_ucsncasecmp - compare two little endian Unicode strings, ignoring case
* @s1: first string
* @s2: second string
* @n: maximum unicode characters to compare
* @upcase: upcase table
* @upcase_size: upcase table size in Unicode characters
*
* Compare the first @n characters of the Unicode strings @s1 and @s2,
* ignoring case. The strings in little endian format and appropriate
* le16_to_cpu() conversion is performed on non-little endian machines.
*
* Each character is uppercased using the @upcase table before the comparison.
*
* The function returns an integer less than, equal to, or greater than zero
* if @s1 (or the first @n Unicode characters thereof) is found, respectively,
* to be less than, to match, or be greater than @s2.
*/
int ntfs_ucsncasecmp(const ntfschar *s1, const ntfschar *s2, size_t n,
const ntfschar *upcase, const u32 upcase_size)
{
u16 c1, c2;
size_t i;
#ifdef DEBUG
if (!s1 || !s2 || !upcase) {
ntfs_log_debug("ntfs_wcsncasecmp() received NULL pointer!\n");
exit(1);
}
#endif
for (i = 0; i < n; ++i) {
if ((c1 = le16_to_cpu(s1[i])) < upcase_size)
c1 = le16_to_cpu(upcase[c1]);
if ((c2 = le16_to_cpu(s2[i])) < upcase_size)
c2 = le16_to_cpu(upcase[c2]);
if (c1 < c2)
return -1;
if (c1 > c2)
return 1;
if (!c1)
break;
}
return 0;
}
void ntfs_ie_filename_dump(INDEX_ENTRY *ie)
{
char *s;
s = ntfs_ie_filename_get(ie);
ntfs_log_debug("'%s' ", s);
ntfs_attr_name_free(&s);
}
/**
* ntfs_device_sector_size_get - get sector size of a device
* @dev: open device
*
* On success, return the sector size in bytes of the device @dev.
* On error return -1 with errno set to the error code.
*
* The following error codes are defined:
* EINVAL Input parameter error
* EOPNOTSUPP System does not support BLKSSZGET ioctl
* ENOTTY @dev is a file or a device not supporting BLKSSZGET
*/
int ntfs_device_sector_size_get(struct ntfs_device *dev)
{
if (!dev) {
errno = EINVAL;
return -1;
}
#ifdef BLKSSZGET
{
int sect_size = 0;
if (!dev->d_ops->ioctl(dev, BLKSSZGET, §_size)) {
ntfs_log_debug("BLKSSZGET sector size = %d bytes\n",
sect_size);
return sect_size;
}
}
#elif defined(DIOCGSECTORSIZE)
{
/* FreeBSD */
size_t sect_size = 0;
if (!dev->d_ops->ioctl(dev, DIOCGSECTORSIZE, §_size)) {
ntfs_log_debug("DIOCGSECTORSIZE sector size = %d bytes\n",
(int) sect_size);
return sect_size;
}
}
#elif defined(DKIOCGETBLOCKSIZE)
{
/* Mac OS X */
uint32_t sect_size = 0;
if (!dev->d_ops->ioctl(dev, DKIOCGETBLOCKSIZE, §_size)) {
ntfs_log_debug("DKIOCGETBLOCKSIZE sector size = %d bytes\n",
(int) sect_size);
return sect_size;
}
}
#else
errno = EOPNOTSUPP;
#endif
return -1;
}
static int ntfs_device_uefi_io_close(struct ntfs_device *dev)
{
struct _uefi_fd *fd = DEV_FD(dev);
ntfs_log_trace("dev %p\n", dev);
//AsciiPrint("ntfs_device_uefi_io_close\n\r");
// Get the device driver descriptor
if (!fd) {
errno = EBADF;
return -1;
}
// Check that the device is actually open
if (!NDevOpen(dev)) {
ntfs_log_perror("device is not open\n");
errno = EIO;
return -1;
}
// Mark the device as closed
NDevClearOpen(dev);
NDevClearBlock(dev);
// Flush the device (if dirty and not read-only)
if (NDevDirty(dev) && !NDevReadOnly(dev)) {
ntfs_log_debug("device is dirty, will now sync\n");
// ...?
// Mark the device as clean
NDevClearDirty(dev);
}
// Flush and destroy the cache (if required)
if (fd->cache) {
//_NTFS_cache_flush(fd->cache);
//_NTFS_cache_destructor(fd->cache);
}
// Shutdown the device interface
/*const DISC_INTERFACE* interface = fd->interface;
if (interface) {
interface->shutdown();
}*/
// Free the device driver private data
ntfs_free(dev->d_private);
dev->d_private = NULL;
return 0;
}
/**
* ntfs_device_unix_io_open - Open a device and lock it exclusively
* @dev:
* @flags:
*
* Description...
*
* Returns:
*/
static int ntfs_device_unix_io_open(struct ntfs_device *dev, int flags)
{
struct flock flk;
struct stat sbuf;
int err;
if (NDevOpen(dev)) {
errno = EBUSY;
return -1;
}
if (!(dev->d_private = ntfs_malloc(sizeof(int))))
return -1;
*(int*)dev->d_private = open(dev->d_name, flags);
if (*(int*)dev->d_private == -1) {
err = errno;
goto err_out;
}
/* Setup our read-only flag. */
if ((flags & O_RDWR) != O_RDWR)
NDevSetReadOnly(dev);
/* Acquire exclusive (mandatory) lock on the whole device. */
memset(&flk, 0, sizeof(flk));
if (NDevReadOnly(dev))
flk.l_type = F_RDLCK;
else
flk.l_type = F_WRLCK;
flk.l_whence = SEEK_SET;
flk.l_start = flk.l_len = 0LL;
if (fcntl(DEV_FD(dev), F_SETLK, &flk)) {
err = errno;
ntfs_log_debug("ntfs_device_unix_io_open: Could not lock %s "
"for %s\n", dev->d_name, NDevReadOnly(dev) ?
"reading" : "writing");
if (close(DEV_FD(dev)))
ntfs_log_perror("ntfs_device_unix_io_open: Warning: "
"Could not close %s", dev->d_name);
goto err_out;
}
/* Determine if device is a block device or not, ignoring errors. */
if (!fstat(DEV_FD(dev), &sbuf) && S_ISBLK(sbuf.st_mode))
NDevSetBlock(dev);
/* Set our open flag. */
NDevSetOpen(dev);
return 0;
err_out:
free(dev->d_private);
dev->d_private = NULL;
errno = err;
return -1;
}
/**
* ntfs_names_collate - collate two Unicode names
* @name1: first Unicode name to compare
* @name1_len: length of first Unicode name to compare
* @name2: second Unicode name to compare
* @name2_len: length of second Unicode name to compare
* @err_val: if @name1 contains an invalid character return this value
* @ic: either CASE_SENSITIVE or IGNORE_CASE
* @upcase: upcase table (ignored if @ic is CASE_SENSITIVE)
* @upcase_len: upcase table size (ignored if @ic is CASE_SENSITIVE)
*
* ntfs_names_collate() collates two Unicode names and returns:
*
* -1 if the first name collates before the second one,
* 0 if the names match,
* 1 if the second name collates before the first one, or
* @err_val if an invalid character is found in @name1 during the comparison.
*
* The following characters are considered invalid: '"', '*', '<', '>' and '?'.
*/
int ntfs_names_collate(const ntfschar *name1, const u32 name1_len,
const ntfschar *name2, const u32 name2_len,
const int err_val __attribute__((unused)),
const IGNORE_CASE_BOOL ic, const ntfschar *upcase,
const u32 upcase_len)
{
u32 cnt;
ntfschar c1, c2;
#ifdef DEBUG
if (!name1 || !name2 || (ic && (!upcase || !upcase_len))) {
ntfs_log_debug("ntfs_names_collate received NULL pointer!\n");
exit(1);
}
#endif
for (cnt = 0; cnt < min(name1_len, name2_len); ++cnt) {
c1 = le16_to_cpu(*name1);
name1++;
c2 = le16_to_cpu(*name2);
name2++;
if (ic) {
if (c1 < upcase_len)
c1 = le16_to_cpu(upcase[c1]);
if (c2 < upcase_len)
c2 = le16_to_cpu(upcase[c2]);
}
#if 0
if (c1 < 64 && legal_ansi_char_array[c1] & 8)
return err_val;
#endif
if (c1 < c2)
return -1;
if (c1 > c2)
return 1;
}
if (name1_len < name2_len)
return -1;
if (name1_len == name2_len)
return 0;
/* name1_len > name2_len */
#if 0
c1 = le16_to_cpu(*name1);
if (c1 < 64 && legal_ansi_char_array[c1] & 8)
return err_val;
#endif
return 1;
}
/**
* ntfs_log_parse_option - Act upon command line options
* @option: Option flag
*
* Delegate some of the work of parsing the command line. All the options begin
* with "--log-". Options cause log levels to be enabled in @ntfs_log (the
* global logging structure).
*
* Note: The "colour" option changes the logging handler.
*
* Returns: TRUE Option understood
* FALSE Invalid log option
*/
BOOL1 ntfs_log_parse_option(const char *option)
{
if (strcmp(option, "--log-debug") == 0) {
ntfs_log_set_levels(NTFS_LOG_LEVEL_DEBUG);
return TRUE;
} else if (strcmp(option, "--log-verbose") == 0) {
ntfs_log_set_levels(NTFS_LOG_LEVEL_VERBOSE);
return TRUE;
} else if (strcmp(option, "--log-quiet") == 0) {
ntfs_log_clear_levels(NTFS_LOG_LEVEL_QUIET);
return TRUE;
} else if (strcmp(option, "--log-trace") == 0) {
ntfs_log_set_levels(NTFS_LOG_LEVEL_TRACE);
return TRUE;
}
ntfs_log_debug("Unknown logging option '%s'\n", option);
return FALSE;
}
/**
* ntfs_device_partition_start_sector_get - get starting sector of a partition
* @dev: open device
*
* On success, return the starting sector of the partition @dev in the parent
* block device of @dev. On error return -1 with errno set to the error code.
*
* The following error codes are defined:
* EINVAL Input parameter error
* EOPNOTSUPP System does not support HDIO_GETGEO ioctl
* ENOTTY @dev is a file or a device not supporting HDIO_GETGEO
*/
s64 ntfs_device_partition_start_sector_get(struct ntfs_device *dev)
{
if (!dev) {
errno = EINVAL;
return -1;
}
#ifdef HDIO_GETGEO
{ struct hd_geometry geo;
if (!dev->d_ops->ioctl(dev, HDIO_GETGEO, &geo)) {
ntfs_log_debug("HDIO_GETGEO start_sect = %lu (0x%lx)\n",
geo.start, geo.start);
return geo.start;
}
}
#else
errno = EOPNOTSUPP;
#endif
return -1;
}
/**
* ntfs_device_sector_size_get - get sector size of a device
* @dev: open device
*
* On success, return the sector size in bytes of the device @dev.
* On error return -1 with errno set to the error code.
*
* The following error codes are defined:
* EINVAL Input parameter error
* EOPNOTSUPP System does not support BLKSSZGET ioctl
* ENOTTY @dev is a file or a device not supporting BLKSSZGET
*/
int ntfs_device_sector_size_get(struct ntfs_device *dev)
{
if (!dev) {
errno = EINVAL;
return -1;
}
#ifdef BLKSSZGET
{
int sect_size = 0;
if (!dev->d_ops->ioctl(dev, BLKSSZGET, §_size)) {
ntfs_log_debug("BLKSSZGET sector size = %d bytes\n",
sect_size);
return sect_size;
}
}
#else
errno = EOPNOTSUPP;
#endif
return -1;
}
/**
* ntfs_device_sectors_per_track_get - get number of sectors per track of device
* @dev: open device
*
* On success, return the number of sectors per track on the device @dev. On
* error return -1 with errno set to the error code.
*
* The following error codes are defined:
* EINVAL Input parameter error
* EOPNOTSUPP System does not support HDIO_GETGEO ioctl
* ENOTTY @dev is a file or a device not supporting HDIO_GETGEO
*/
int ntfs_device_sectors_per_track_get(struct ntfs_device *dev)
{
if (!dev) {
errno = EINVAL;
return -1;
}
#ifdef HDIO_GETGEO
{ struct hd_geometry geo;
if (!dev->d_ops->ioctl(dev, HDIO_GETGEO, &geo)) {
ntfs_log_debug("HDIO_GETGEO sectors_per_track = %u (0x%x)\n",
(unsigned)geo.sectors,
(unsigned)geo.sectors);
return geo.sectors;
}
}
#else
errno = EOPNOTSUPP;
#endif
return -1;
}
/**
* ntfs_ucsncmp - compare two little endian Unicode strings
* @s1: first string
* @s2: second string
* @n: maximum unicode characters to compare
*
* Compare the first @n characters of the Unicode strings @s1 and @s2,
* The strings in little endian format and appropriate le16_to_cpu()
* conversion is performed on non-little endian machines.
*
* The function returns an integer less than, equal to, or greater than zero
* if @s1 (or the first @n Unicode characters thereof) is found, respectively,
* to be less than, to match, or be greater than @s2.
*/
int ntfs_ucsncmp(const ntfschar *s1, const ntfschar *s2, size_t n)
{
ntfschar c1, c2;
size_t i;
#ifdef DEBUG
if (!s1 || !s2) {
ntfs_log_debug("ntfs_wcsncmp() received NULL pointer!\n");
exit(1);
}
#endif
for (i = 0; i < n; ++i) {
c1 = le16_to_cpu(s1[i]);
c2 = le16_to_cpu(s2[i]);
if (c1 < c2)
return -1;
if (c1 > c2)
return 1;
if (!c1)
break;
}
return 0;
}
/**
* ntfs_device_size_get - return the size of a device in blocks
* @dev: open device
* @block_size: block size in bytes in which to return the result
*
* Return the number of @block_size sized blocks in the device described by the
* open device @dev.
*
* Adapted from e2fsutils-1.19, Copyright (C) 1995 Theodore Ts'o.
*
* On error return -1 with errno set to the error code.
*/
s64 ntfs_device_size_get(struct ntfs_device *dev, int block_size)
{
s64 high, low;
if (!dev || block_size <= 0 || (block_size - 1) & block_size) {
errno = EINVAL;
return -1;
}
#ifdef BLKGETSIZE64
{ u64 size;
if (dev->d_ops->ioctl(dev, BLKGETSIZE64, &size) >= 0) {
ntfs_log_debug("BLKGETSIZE64 nr bytes = %llu (0x%llx)\n",
(unsigned long long)size,
(unsigned long long)size);
return (s64)size / block_size;
}
}
#endif
#ifdef BLKGETSIZE
{ unsigned long size;
if (dev->d_ops->ioctl(dev, BLKGETSIZE, &size) >= 0) {
ntfs_log_debug("BLKGETSIZE nr 512 byte blocks = %lu (0x%lx)\n",
size, size);
return (s64)size * 512 / block_size;
}
}
#endif
#ifdef FDGETPRM
{ struct floppy_struct this_floppy;
if (dev->d_ops->ioctl(dev, FDGETPRM, &this_floppy) >= 0) {
ntfs_log_debug("FDGETPRM nr 512 byte blocks = %lu (0x%lx)\n",
(unsigned long)this_floppy.size,
(unsigned long)this_floppy.size);
return (s64)this_floppy.size * 512 / block_size;
}
}
#endif
#ifdef DIOCGMEDIASIZE
{
/* FreeBSD */
off_t size;
if (dev->d_ops->ioctl(dev, DIOCGMEDIASIZE, &size) >= 0) {
ntfs_log_debug("DIOCGMEDIASIZE nr bytes = %llu (0x%llx)\n",
(unsigned long long)size,
(unsigned long long)size);
return (s64)size / block_size;
}
}
#endif
#ifdef DKIOCGETBLOCKCOUNT
{
/* Mac OS X */
uint64_t blocks;
int sector_size;
sector_size = ntfs_device_sector_size_get(dev);
if (sector_size >= 0 && dev->d_ops->ioctl(dev,
DKIOCGETBLOCKCOUNT, &blocks) >= 0)
{
ntfs_log_debug("DKIOCGETBLOCKCOUNT nr blocks = %llu (0x%llx)\n",
(unsigned long long) blocks,
(unsigned long long) blocks);
return blocks * sector_size / block_size;
}
}
#endif
#ifdef __HAIKU__
{
off_t size = 0;
partition_info partitionInfo;
device_geometry geometry;
if (dev->d_ops->ioctl(dev, B_GET_PARTITION_INFO, &partitionInfo) == 0)
size = partitionInfo.size;
else if (dev->d_ops->ioctl(dev, B_GET_GEOMETRY, &geometry) == 0) {
size = (off_t)geometry.cylinder_count * geometry.sectors_per_track
* geometry.head_count * geometry.bytes_per_sector;
}
if (size > 0)
return (s64)size / block_size;
}
#endif
/*
* We couldn't figure it out by using a specialized ioctl,
* so do binary search to find the size of the device.
*/
low = 0LL;
for (high = 1024LL; !ntfs_device_offset_valid(dev, high); high <<= 1)
low = high;
while (low < high - 1LL) {
const s64 mid = (low + high) / 2;
if (!ntfs_device_offset_valid(dev, mid))
low = mid;
else
high = mid;
}
dev->d_ops->seek(dev, 0LL, SEEK_SET);
return (low + 1LL) / block_size;
}
/**
* ntfs_index_lookup - find a key in an index and return its index entry
* @key: [IN] key for which to search in the index
* @key_len: [IN] length of @key in bytes
* @icx: [IN/OUT] context describing the index and the returned entry
*
* Before calling ntfs_index_lookup(), @icx must have been obtained from a
* call to ntfs_index_ctx_get().
*
* Look for the @key in the index specified by the index lookup context @icx.
* ntfs_index_lookup() walks the contents of the index looking for the @key.
*
* If the @key is found in the index, 0 is returned and @icx is setup to
* describe the index entry containing the matching @key. @icx->entry is the
* index entry and @icx->data and @icx->data_len are the index entry data and
* its length in bytes, respectively.
*
* If the @key is not found in the index, -1 is returned, errno = ENOENT and
* @icx is setup to describe the index entry whose key collates immediately
* after the search @key, i.e. this is the position in the index at which
* an index entry with a key of @key would need to be inserted.
*
* If an error occurs return -1, set errno to error code and @icx is left
* untouched.
*
* When finished with the entry and its data, call ntfs_index_ctx_put() to free
* the context and other associated resources.
*
* If the index entry was modified, call ntfs_index_entry_mark_dirty() before
* the call to ntfs_index_ctx_put() to ensure that the changes are written
* to disk.
*/
int ntfs_index_lookup(const void *key, const int key_len, ntfs_index_context *icx)
{
VCN old_vcn, vcn;
ntfs_inode *ni = icx->ni;
INDEX_ROOT *ir;
INDEX_ENTRY *ie;
INDEX_BLOCK *ib = NULL;
int ret, err = 0;
ntfs_log_trace("Entering\n");
if (!key || key_len <= 0) {
errno = EINVAL;
ntfs_log_perror("key: %p key_len: %d", key, key_len);
return -1;
}
ir = ntfs_ir_lookup(ni, icx->name, icx->name_len, &icx->actx);
if (!ir) {
if (errno == ENOENT)
errno = EIO;
return -1;
}
icx->block_size = le32_to_cpu(ir->index_block_size);
if (icx->block_size < NTFS_BLOCK_SIZE) {
errno = EINVAL;
ntfs_log_perror("Index block size (%d) is smaller than the "
"sector size (%d)", icx->block_size, NTFS_BLOCK_SIZE);
goto err_out;
}
if (ni->vol->cluster_size <= icx->block_size)
icx->vcn_size_bits = ni->vol->cluster_size_bits;
else
icx->vcn_size_bits = NTFS_BLOCK_SIZE_BITS;
/* get the appropriate collation function */
icx->collate = ntfs_get_collate_function(ir->collation_rule);
if (!icx->collate) {
err = errno = EOPNOTSUPP;
ntfs_log_perror("Unknown collation rule 0x%x",
(unsigned)le32_to_cpu(ir->collation_rule));
goto err_out;
}
old_vcn = VCN_INDEX_ROOT_PARENT;
/*
* FIXME: check for both ir and ib that the first index entry is
* within the index block.
*/
ret = ntfs_ie_lookup(key, key_len, icx, &ir->index, &vcn, &ie);
if (ret == STATUS_ERROR) {
err = errno;
goto err_out;
}
icx->ir = ir;
if (ret != STATUS_KEEP_SEARCHING) {
/* STATUS_OK or STATUS_NOT_FOUND */
err = errno;
icx->is_in_root = TRUE;
icx->parent_vcn[icx->pindex] = old_vcn;
goto done;
}
/* Child node present, descend into it. */
icx->ia_na = ntfs_ia_open(icx, ni);
if (!icx->ia_na)
goto err_out;
ib = ntfs_malloc(icx->block_size);
if (!ib) {
err = errno;
goto err_out;
}
descend_into_child_node:
icx->parent_vcn[icx->pindex] = old_vcn;
if (ntfs_icx_parent_inc(icx)) {
err = errno;
goto err_out;
}
old_vcn = vcn;
ntfs_log_debug("Descend into node with VCN %lld\n", (long long)vcn);
if (ntfs_ib_read(icx, vcn, ib))
goto err_out;
ret = ntfs_ie_lookup(key, key_len, icx, &ib->index, &vcn, &ie);
if (ret != STATUS_KEEP_SEARCHING) {
err = errno;
if (ret == STATUS_ERROR)
goto err_out;
/* STATUS_OK or STATUS_NOT_FOUND */
icx->is_in_root = FALSE;
icx->ib = ib;
icx->parent_vcn[icx->pindex] = vcn;
goto done;
}
if ((ib->index.ih_flags & NODE_MASK) == LEAF_NODE) {
ntfs_log_error("Index entry with child node found in a leaf "
"node in inode 0x%llx.\n",
(unsigned long long)ni->mft_no);
goto err_out;
}
goto descend_into_child_node;
err_out:
free(ib);
if (!err)
err = EIO;
errno = err;
return -1;
done:
icx->entry = ie;
icx->data = (u8 *)ie + offsetof(INDEX_ENTRY, key);
icx->data_len = le16_to_cpu(ie->key_length);
ntfs_log_trace("Done.\n");
if (err) {
errno = err;
return -1;
}
return 0;
}
/**
* Find a key in the index block.
*
* Return values:
* STATUS_OK with errno set to ESUCCESS if we know for sure that the
* entry exists and @ie_out points to this entry.
* STATUS_NOT_FOUND with errno set to ENOENT if we know for sure the
* entry doesn't exist and @ie_out is the insertion point.
* STATUS_KEEP_SEARCHING if we can't answer the above question and
* @vcn will contain the node index block.
* STATUS_ERROR with errno set if on unexpected error during lookup.
*/
static int ntfs_ie_lookup(const void *key, const int key_len,
ntfs_index_context *icx, INDEX_HEADER *ih,
VCN *vcn, INDEX_ENTRY **ie_out)
{
INDEX_ENTRY *ie;
u8 *index_end;
int rc, item = 0;
ntfs_log_trace("Entering\n");
index_end = ntfs_ie_get_end(ih);
/*
* Loop until we exceed valid memory (corruption case) or until we
* reach the last entry.
*/
for (ie = ntfs_ie_get_first(ih); ; ie = ntfs_ie_get_next(ie)) {
/* Bounds checks. */
if ((u8 *)ie + sizeof(INDEX_ENTRY_HEADER) > index_end ||
(u8 *)ie + le16_to_cpu(ie->length) > index_end) {
errno = ERANGE;
ntfs_log_error("Index entry out of bounds in inode "
"%llu.\n",
(unsigned long long)icx->ni->mft_no);
return STATUS_ERROR;
}
/*
* The last entry cannot contain a key. It can however contain
* a pointer to a child node in the B+tree so we just break out.
*/
if (ntfs_ie_end(ie))
break;
/*
* Not a perfect match, need to do full blown collation so we
* know which way in the B+tree we have to go.
*/
if (!icx->collate) {
ntfs_log_error("Collation function not defined\n");
errno = EOPNOTSUPP;
return STATUS_ERROR;
}
rc = icx->collate(icx->ni->vol, key, key_len,
&ie->key, le16_to_cpu(ie->key_length));
if (rc == NTFS_COLLATION_ERROR) {
ntfs_log_error("Collation error. Perhaps a filename "
"contains invalid characters?\n");
errno = ERANGE;
return STATUS_ERROR;
}
/*
* If @key collates before the key of the current entry, there
* is definitely no such key in this index but we might need to
* descend into the B+tree so we just break out of the loop.
*/
if (rc == -1)
break;
if (!rc) {
*ie_out = ie;
errno = 0;
icx->parent_pos[icx->pindex] = item;
return STATUS_OK;
}
item++;
}
/*
* We have finished with this index block without success. Check for the
* presence of a child node and if not present return with errno ENOENT,
* otherwise we will keep searching in another index block.
*/
if (!(ie->ie_flags & INDEX_ENTRY_NODE)) {
ntfs_log_debug("Index entry wasn't found.\n");
*ie_out = ie;
errno = ENOENT;
return STATUS_NOT_FOUND;
}
/* Get the starting vcn of the index_block holding the child node. */
*vcn = ntfs_ie_get_vcn(ie);
if (*vcn < 0) {
errno = EINVAL;
ntfs_log_perror("Negative vcn in inode %llu",
(unsigned long long)icx->ni->mft_no);
return STATUS_ERROR;
}
ntfs_log_trace("Parent entry number %d\n", item);
icx->parent_pos[icx->pindex] = item;
return STATUS_KEEP_SEARCHING;
}
/**
* ntfs_boot_sector_parse - setup an ntfs volume from an ntfs boot sector
* @vol: ntfs_volume to setup
* @bs: buffer containing ntfs boot sector to parse
*
* Parse the ntfs bootsector @bs and setup the ntfs volume @vol with the
* obtained values.
*
* Return 0 on success or -1 on error with errno set to the error code EINVAL.
*/
int ntfs_boot_sector_parse(ntfs_volume *vol, const NTFS_BOOT_SECTOR *bs)
{
s64 sectors;
u8 sectors_per_cluster;
s8 c;
/* We return -1 with errno = EINVAL on error. */
errno = EINVAL;
vol->sector_size = le16_to_cpu(bs->bpb.bytes_per_sector);
vol->sector_size_bits = ffs(vol->sector_size) - 1;
ntfs_log_debug("SectorSize = 0x%x\n", vol->sector_size);
ntfs_log_debug("SectorSizeBits = %u\n", vol->sector_size_bits);
/*
* The bounds checks on mft_lcn and mft_mirr_lcn (i.e. them being
* below or equal the number_of_clusters) really belong in the
* ntfs_boot_sector_is_ntfs but in this way we can just do this once.
*/
sectors_per_cluster = bs->bpb.sectors_per_cluster;
ntfs_log_debug("SectorsPerCluster = 0x%x\n", sectors_per_cluster);
if (sectors_per_cluster & (sectors_per_cluster - 1)) {
ntfs_log_error("sectors_per_cluster (%d) is not a power of 2."
"\n", sectors_per_cluster);
return -1;
}
sectors = sle64_to_cpu(bs->number_of_sectors);
ntfs_log_debug("NumberOfSectors = %lld\n", (long long)sectors);
if (!sectors) {
ntfs_log_error("Volume size is set to zero.\n");
return -1;
}
if (vol->dev->d_ops->seek(vol->dev,
(sectors - 1) << vol->sector_size_bits,
SEEK_SET) == -1) {
ntfs_log_perror("Failed to read last sector (%lld)",
(long long)sectors);
ntfs_log_error("%s", last_sector_error);
return -1;
}
vol->nr_clusters = sectors >> (ffs(sectors_per_cluster) - 1);
vol->mft_lcn = sle64_to_cpu(bs->mft_lcn);
vol->mftmirr_lcn = sle64_to_cpu(bs->mftmirr_lcn);
ntfs_log_debug("MFT LCN = %lld\n", (long long)vol->mft_lcn);
ntfs_log_debug("MFTMirr LCN = %lld\n", (long long)vol->mftmirr_lcn);
if (vol->mft_lcn > vol->nr_clusters ||
vol->mftmirr_lcn > vol->nr_clusters) {
ntfs_log_error("$MFT LCN (%lld) or $MFTMirr LCN (%lld) is "
"greater than the number of clusters (%lld).\n",
(long long)vol->mft_lcn, (long long)vol->mftmirr_lcn,
(long long)vol->nr_clusters);
return -1;
}
vol->cluster_size = sectors_per_cluster * vol->sector_size;
if (vol->cluster_size & (vol->cluster_size - 1)) {
ntfs_log_error("cluster_size (%d) is not a power of 2.\n",
vol->cluster_size);
return -1;
}
vol->cluster_size_bits = ffs(vol->cluster_size) - 1;
/*
* Need to get the clusters per mft record and handle it if it is
* negative. Then calculate the mft_record_size. A value of 0x80 is
* illegal, thus signed char is actually ok!
*/
c = bs->clusters_per_mft_record;
ntfs_log_debug("ClusterSize = 0x%x\n", (unsigned)vol->cluster_size);
ntfs_log_debug("ClusterSizeBits = %u\n", vol->cluster_size_bits);
ntfs_log_debug("ClustersPerMftRecord = 0x%x\n", c);
/*
* When clusters_per_mft_record is negative, it means that it is to
* be taken to be the negative base 2 logarithm of the mft_record_size
* min bytes. Then:
* mft_record_size = 2^(-clusters_per_mft_record) bytes.
*/
if (c < 0)
vol->mft_record_size = 1 << -c;
else
vol->mft_record_size = c << vol->cluster_size_bits;
if (vol->mft_record_size & (vol->mft_record_size - 1)) {
ntfs_log_error("mft_record_size (%d) is not a power of 2.\n",
vol->mft_record_size);
return -1;
}
vol->mft_record_size_bits = ffs(vol->mft_record_size) - 1;
ntfs_log_debug("MftRecordSize = 0x%x\n", (unsigned)vol->mft_record_size);
ntfs_log_debug("MftRecordSizeBits = %u\n", vol->mft_record_size_bits);
/* Same as above for INDX record. */
c = bs->clusters_per_index_record;
ntfs_log_debug("ClustersPerINDXRecord = 0x%x\n", c);
if (c < 0)
vol->indx_record_size = 1 << -c;
else
vol->indx_record_size = c << vol->cluster_size_bits;
vol->indx_record_size_bits = ffs(vol->indx_record_size) - 1;
ntfs_log_debug("INDXRecordSize = 0x%x\n", (unsigned)vol->indx_record_size);
ntfs_log_debug("INDXRecordSizeBits = %u\n", vol->indx_record_size_bits);
/*
* Work out the size of the MFT mirror in number of mft records. If the
* cluster size is less than or equal to the size taken by four mft
* records, the mft mirror stores the first four mft records. If the
* cluster size is bigger than the size taken by four mft records, the
* mft mirror contains as many mft records as will fit into one
* cluster.
*/
if (vol->cluster_size <= 4 * vol->mft_record_size)
vol->mftmirr_size = 4;
else
vol->mftmirr_size = vol->cluster_size / vol->mft_record_size;
return 0;
}
ntfs_vd *ntfsMount (const char *name, struct _NTFS_VOLUME *interface, sec_t startSector, u32 cachePageCount, u32 cachePageSize, u32 flags)
{
ntfs_vd *vd = NULL;
struct _uefi_fd *fd = NULL;
const devoptab_t *mnt;
//Print(L"ntfsMount %a\n", name);
//CpuBreakpoint();
// Sanity check
if (!name || !interface) {
//Print(L"ntfsMount EINVAL\n");
errno = EINVAL;
return false;
}
// Initialise ntfs-3g
ntfsInit();
mnt = ntfsGetDevice(name, false);
// Check that the requested mount name is free
if (mnt) {
//Print(L"ntfsMount EADDRINUSE\n");
errno = 99; //EADDRINUSE;
return (ntfs_vd*) mnt->deviceData; // previous mnt data!
}
// Allocate the volume descriptor
vd = (ntfs_vd*)ntfs_alloc(sizeof(ntfs_vd));
if (!vd) {
//Print(L"ntfsMount ENOMEM\n");
errno = ENOMEM;
return false;
}
else {
//Print(L"ntfsMount ntfs_vd!\n");
}
// Setup the volume descriptor
//Print(L"vd.id! [%x]\n", vd);
vd->id = 0;//interface->ioType;
//Print(L"vd.flags!\n");
vd->flags = 0;
vd->uid = 0;
vd->gid = 0;
vd->fmask = 0;
vd->dmask = 0;
vd->atime = ((flags & NTFS_UPDATE_ACCESS_TIMES) ? ATIME_ENABLED : ATIME_DISABLED);
vd->showHiddenFiles = (flags & NTFS_SHOW_HIDDEN_FILES);
vd->showSystemFiles = (flags & NTFS_SHOW_SYSTEM_FILES);
//Print(L"invoking ntfs_alloc!\n");
// Allocate the device driver descriptor
fd = (struct _uefi_fd *)ntfs_alloc(sizeof(struct _uefi_fd));
if (!fd) {
//Print(L"ntfsMount ENOMEM(2)\n");
ntfs_free(vd);
errno = ENOMEM;
return false;
}
else
{
//Print(L"ntfs_alloc uefi_fd\n");
}
// Setup the device driver descriptor
fd->interface = interface;
fd->startSector = startSector;
fd->sectorSize = 0x200;
fd->sectorCount = 0x200;
fd->cachePageCount = cachePageCount;
fd->cachePageSize = cachePageSize;
// Allocate the device driver
vd->dev = ntfs_device_alloc(name, 0, &ntfs_device_uefi_io_ops, fd);
if (!vd->dev) {
//Print(L"ntfsMount ntfs_device_alloc failed\n");
ntfs_free(fd);
ntfs_free(vd);
return false;
}
//Print(L"ntfs_device_alloc success\n");
// Build the mount flags
if (flags & NTFS_READ_ONLY)
vd->flags |= NTFS_MNT_RDONLY;
if (flags & NTFS_RECOVER)
vd->flags |= NTFS_MNT_RECOVER;
if (flags & NTFS_IGNORE_HIBERFILE)
vd->flags |= NTFS_MNT_IGNORE_HIBERFILE;
if (vd->flags & NTFS_MNT_RDONLY)
ntfs_log_debug("Mounting \"%s\" as read-only\n", name);
// Mount the device
//Print(L"Invoking ntfs_device_mount\n");
vd->vol = ntfs_device_mount(vd->dev, vd->flags);
if (!vd->vol) {
switch(ntfs_volume_error(errno)) {
case NTFS_VOLUME_NOT_NTFS: errno = EINVALPART; break;
case NTFS_VOLUME_CORRUPT: errno = EINVALPART; break;
case NTFS_VOLUME_HIBERNATED: errno = EHIBERNATED; break;
case NTFS_VOLUME_UNCLEAN_UNMOUNT: errno = EDIRTY; break;
default: errno = EINVAL; break;
}
ntfs_device_free(vd->dev);
ntfs_free(vd);
//Print(L"ntfsMount ntfs_device_mount FAILED (%x)\n", errno);
return NULL;
}
if (flags & NTFS_IGNORE_CASE)
ntfs_set_ignore_case(vd->vol);
// Initialise the volume descriptor
if (ntfsInitVolume(vd)) {
ntfs_umount(vd->vol, true);
ntfs_free(vd);
//Print(L"ntfsMount ntfsInitVolume failed\n");
return NULL;
}
// Add the device to the devoptab table
if (ntfsAddDevice(name, vd)) {
//Print(L"ntfsMount ntfsAddDevice failed\n");
ntfsDeinitVolume(vd);
ntfs_umount(vd->vol, true);
ntfs_free(vd);
return NULL;
}
//Print(L"ntfsMount done.\n");
return vd;
}
static int ntfs_device_get_geo(struct ntfs_device *dev)
{
int err;
if (!dev) {
errno = EINVAL;
return -1;
}
err = EOPNOTSUPP;
#ifdef ENABLE_HD
{
hd_data_t *hddata;
hd_t *hd, *devlist, *partlist = NULL;
str_list_t *names;
hd_res_t *res;
const int d_name_len = strlen(dev->d_name) + 1;
int done = 0;
hddata = calloc(1, sizeof(*hddata));
if (!hddata) {
err = ENOMEM;
goto skip_hd;
}
/* List all "disk" class devices on the system. */
devlist = hd_list(hddata, hw_disk, 1, NULL);
if (!devlist) {
free(hddata);
err = ENOMEM;
goto skip_hd;
}
/*
* Loop over each disk device looking for the device with the
* same unix name as @dev.
*/
for (hd = devlist; hd; hd = hd->next) {
if (hd->unix_dev_name && !strncmp(dev->d_name,
hd->unix_dev_name, d_name_len))
goto got_hd;
if (hd->unix_dev_name2 && !strncmp(dev->d_name,
hd->unix_dev_name2, d_name_len))
goto got_hd;
for (names = hd->unix_dev_names; names;
names = names->next) {
if (names->str && !strncmp(dev->d_name,
names->str, d_name_len))
goto got_hd;
}
}
/*
* Device was not a whole disk device. Unless it is a file it
* is likely to be a partition device. List all "partition"
* class devices on the system.
*/
partlist = hd_list(hddata, hw_partition, 1, NULL);
for (hd = partlist; hd; hd = hd->next) {
if (hd->unix_dev_name && !strncmp(dev->d_name,
hd->unix_dev_name, d_name_len))
goto got_part_hd;
if (hd->unix_dev_name2 && !strncmp(dev->d_name,
hd->unix_dev_name2, d_name_len))
goto got_part_hd;
for (names = hd->unix_dev_names; names;
names = names->next) {
if (names->str && !strncmp(dev->d_name,
names->str, d_name_len))
goto got_part_hd;
}
}
/* Failed to find the device. Stop trying and clean up. */
goto end_hd;
got_part_hd:
/* Get the whole block device the partition device is on. */
hd = hd_get_device_by_idx(hddata, hd->attached_to);
if (!hd)
goto end_hd;
got_hd:
/*
* @hd is now the whole block device either being formatted or
* that the partition being formatted is on.
*
* Loop over each resource of the disk device looking for the
* BIOS legacy geometry obtained from EDD which is what Windows
* needs to boot.
*/
for (res = hd->res; res; res = res->next) {
/* geotype 3 is BIOS legacy. */
if (res->any.type != res_disk_geo ||
res->disk_geo.geotype != 3)
continue;
dev->d_heads = res->disk_geo.heads;
dev->d_sectors_per_track = res->disk_geo.sectors;
done = 1;
}
end_hd:
if (partlist)
hd_free_hd_list(partlist);
hd_free_hd_list(devlist);
hd_free_hd_data(hddata);
free(hddata);
if (done) {
ntfs_log_debug("EDD/BIOD legacy heads = %u, sectors "
"per track = %u\n", dev->d_heads,
dev->d_sectors_per_track);
return 0;
}
}
skip_hd:
#endif
#ifdef HDIO_GETGEO
{ struct hd_geometry geo;
if (!dev->d_ops->ioctl(dev, HDIO_GETGEO, &geo)) {
dev->d_heads = geo.heads;
dev->d_sectors_per_track = geo.sectors;
ntfs_log_debug("HDIO_GETGEO heads = %u, sectors per "
"track = %u\n", dev->d_heads,
dev->d_sectors_per_track);
return 0;
}
err = errno;
}
#endif
errno = err;
return -1;
}
/**
* ntfs_fek_import_from_raw
*/
static ntfs_fek *ntfs_fek_import_from_raw(u8 *fek_buf, unsigned fek_size)
{
ntfs_fek *fek;
u32 key_size, wanted_key_size, gcry_algo;
int gcry_mode;
gcry_error_t err;
ntfs_desx_ctx *ctx;
key_size = le32_to_cpup(fek_buf);
ntfs_log_debug("key_size 0x%x\n", key_size);
if (key_size + 16 > fek_size) {
ntfs_log_debug("Invalid FEK. It was probably decrypted with "
"the incorrect RSA key.");
errno = EINVAL;
return NULL;
}
fek = malloc(((((sizeof(*fek) + 7) & ~7) + key_size + 7) & ~7) +
sizeof(gcry_cipher_hd_t));
if (!fek) {
errno = ENOMEM;
return NULL;
}
ctx = &fek->desx_ctx;
fek->alg_id = *(le32*)(fek_buf + 8);
//ntfs_log_debug("alg_id 0x%x\n", le32_to_cpu(fek->alg_id));
fek->key_data = (u8*)fek + ((sizeof(*fek) + 7) & ~7);
memcpy(fek->key_data, fek_buf + 16, key_size);
fek->des_gcry_cipher_hd_ptr = NULL;
*(gcry_cipher_hd_t***)(fek->key_data + ((key_size + 7) & ~7)) =
&fek->des_gcry_cipher_hd_ptr;
switch (fek->alg_id) {
case CALG_DESX:
wanted_key_size = 16;
gcry_algo = GCRY_CIPHER_DES;
gcry_mode = GCRY_CIPHER_MODE_ECB;
break;
case CALG_3DES:
wanted_key_size = 24;
gcry_algo = GCRY_CIPHER_3DES;
gcry_mode = GCRY_CIPHER_MODE_CBC;
break;
case CALG_AES_256:
wanted_key_size = 32;
gcry_algo = GCRY_CIPHER_AES256;
gcry_mode = GCRY_CIPHER_MODE_CBC;
break;
default:
wanted_key_size = 8;
gcry_algo = GCRY_CIPHER_DES;
gcry_mode = GCRY_CIPHER_MODE_CBC;
if (fek->alg_id == CALG_DES)
ntfs_log_error("DES is not supported at present\n");
else
ntfs_log_error("Unknown crypto algorithm 0x%x\n",
le32_to_cpu(fek->alg_id));
ntfs_log_error(". Please email %s and say that you saw this "
"message. We will then try to implement "
"support for this algorithm.\n", NTFS_DEV_LIST);
err = EOPNOTSUPP;
goto out;
}
if (key_size != wanted_key_size) {
ntfs_log_error("%s key of %u bytes but needed size is %u "
"bytes, assuming corrupt or incorrect key. "
"Aborting.\n",
gcry_cipher_algo_name(gcry_algo),
(unsigned)key_size, (unsigned)wanted_key_size);
err = EIO;
goto out;
}
err = gcry_cipher_open(&fek->gcry_cipher_hd, gcry_algo,
gcry_mode, 0);
if (err != GPG_ERR_NO_ERROR) {
ntfs_log_error("gcry_cipher_open() failed: %s\n",
gcry_strerror(err));
err = EINVAL;
goto out;
}
if (fek->alg_id == CALG_DESX) {
err = ntfs_desx_key_expand(fek->key_data, (u32*)ctx->des_key,
&ctx->out_whitening, &ctx->in_whitening);
if (err == GPG_ERR_NO_ERROR)
err = gcry_cipher_setkey(fek->gcry_cipher_hd,
ctx->des_key, 8);
} else {
err = gcry_cipher_setkey(fek->gcry_cipher_hd, fek->key_data,
key_size);
}
if (err != GPG_ERR_NO_ERROR) {
ntfs_log_error("gcry_cipher_setkey() failed: %s\n",
gcry_strerror(err));
gcry_cipher_close(fek->gcry_cipher_hd);
err = EINVAL;
goto out;
}
return fek;
out:
free(fek);
errno = err;
return NULL;
}
/**
* ntfs_boot_sector_is_ntfs - check if buffer contains a valid ntfs boot sector
* @b: buffer containing putative boot sector to analyze
* @silent: if zero, output progress messages to stderr
*
* Check if the buffer @b contains a valid ntfs boot sector. The buffer @b
* must be at least 512 bytes in size.
*
* If @silent is zero, output progress messages to stderr. Otherwise, do not
* output any messages (except when configured with --enable-debug in which
* case warning/debug messages may be displayed).
*
* Return TRUE if @b contains a valid ntfs boot sector and FALSE if not.
*/
BOOL ntfs_boot_sector_is_ntfs(NTFS_BOOT_SECTOR *b)
{
u32 i;
BOOL ret = FALSE;
ntfs_log_debug("Beginning bootsector check.\n");
ntfs_log_debug("Checking OEMid, NTFS signature.\n");
if (b->oem_id != cpu_to_le64(0x202020205346544eULL)) { /* "NTFS " */
ntfs_log_error("NTFS signature is missing.\n");
goto not_ntfs;
}
ntfs_log_debug("Checking bytes per sector.\n");
if (le16_to_cpu(b->bpb.bytes_per_sector) < 256 ||
le16_to_cpu(b->bpb.bytes_per_sector) > 4096) {
ntfs_log_error("Unexpected bytes per sector value (%d).\n",
le16_to_cpu(b->bpb.bytes_per_sector));
goto not_ntfs;
}
ntfs_log_debug("Checking sectors per cluster.\n");
switch (b->bpb.sectors_per_cluster) {
case 1: case 2: case 4: case 8: case 16: case 32: case 64: case 128:
break;
default:
ntfs_log_error("Unexpected sectors per cluster value (%d).\n",
b->bpb.sectors_per_cluster);
goto not_ntfs;
}
ntfs_log_debug("Checking cluster size.\n");
i = (u32)le16_to_cpu(b->bpb.bytes_per_sector) *
b->bpb.sectors_per_cluster;
if (i > 65536) {
ntfs_log_error("Unexpected cluster size (%d).\n", i);
goto not_ntfs;
}
ntfs_log_debug("Checking reserved fields are zero.\n");
if (le16_to_cpu(b->bpb.reserved_sectors) ||
le16_to_cpu(b->bpb.root_entries) ||
le16_to_cpu(b->bpb.sectors) ||
le16_to_cpu(b->bpb.sectors_per_fat) ||
le32_to_cpu(b->bpb.large_sectors) ||
b->bpb.fats) {
ntfs_log_error("Reserved fields aren't zero "
"(%d, %d, %d, %d, %d, %d).\n",
le16_to_cpu(b->bpb.reserved_sectors),
le16_to_cpu(b->bpb.root_entries),
le16_to_cpu(b->bpb.sectors),
le16_to_cpu(b->bpb.sectors_per_fat),
le32_to_cpu(b->bpb.large_sectors),
b->bpb.fats);
goto not_ntfs;
}
ntfs_log_debug("Checking clusters per mft record.\n");
if ((u8)b->clusters_per_mft_record < 0xe1 ||
(u8)b->clusters_per_mft_record > 0xf7) {
switch (b->clusters_per_mft_record) {
case 1: case 2: case 4: case 8: case 0x10: case 0x20: case 0x40:
break;
default:
ntfs_log_error("Unexpected clusters per mft record "
"(%d).\n", b->clusters_per_mft_record);
goto not_ntfs;
}
}
ntfs_log_debug("Checking clusters per index block.\n");
if ((u8)b->clusters_per_index_record < 0xe1 ||
(u8)b->clusters_per_index_record > 0xf7) {
switch (b->clusters_per_index_record) {
case 1: case 2: case 4: case 8: case 0x10: case 0x20: case 0x40:
break;
default:
ntfs_log_error("Unexpected clusters per index record "
"(%d).\n", b->clusters_per_index_record);
goto not_ntfs;
}
}
if (b->end_of_sector_marker != cpu_to_le16(0xaa55))
ntfs_log_debug("Warning: Bootsector has invalid end of sector "
"marker.\n");
ntfs_log_debug("Bootsector check completed successfully.\n");
ret = TRUE;
not_ntfs:
return ret;
}
/**
* ntfs_df_array_fek_get
*/
static ntfs_fek *ntfs_df_array_fek_get(EFS_DF_ARRAY_HEADER *df_array,
ntfs_rsa_private_key rsa_key, char *thumbprint,
int thumbprint_size)
{
EFS_DF_HEADER *df_header;
EFS_DF_CREDENTIAL_HEADER *df_cred;
EFS_DF_CERT_THUMBPRINT_HEADER *df_cert;
u8 *fek_buf;
ntfs_fek *fek;
u32 df_count, fek_size;
unsigned i;
df_count = le32_to_cpu(df_array->df_count);
if (!df_count)
ntfs_log_error("There are no elements in the DF array.\n");
df_header = (EFS_DF_HEADER*)(df_array + 1);
for (i = 0; i < df_count; i++, df_header = (EFS_DF_HEADER*)(
(u8*)df_header + le32_to_cpu(df_header->df_length))) {
df_cred = (EFS_DF_CREDENTIAL_HEADER*)((u8*)df_header +
le32_to_cpu(df_header->cred_header_offset));
if (df_cred->type != NTFS_CRED_TYPE_CERT_THUMBPRINT) {
ntfs_log_debug("Credential type is not certificate "
"thumbprint, skipping DF entry.\n");
continue;
}
df_cert = (EFS_DF_CERT_THUMBPRINT_HEADER*)((u8*)df_cred +
le32_to_cpu(
df_cred->cert_thumbprint_header_offset));
if ((int)le32_to_cpu(df_cert->thumbprint_size)
!= thumbprint_size) {
ntfs_log_error("Thumbprint size %d is not valid "
"(should be %d), skipping this DF "
"entry.\n",
le32_to_cpu(df_cert->thumbprint_size),
thumbprint_size);
continue;
}
if (memcmp((u8*)df_cert +
le32_to_cpu(df_cert->thumbprint_offset),
thumbprint, thumbprint_size)) {
ntfs_log_debug("Thumbprints do not match, skipping "
"this DF entry.\n");
continue;
}
/*
* The thumbprints match so this is probably the DF entry
* matching the RSA key. Try to decrypt the FEK with it.
*/
fek_size = le32_to_cpu(df_header->fek_size);
fek_buf = (u8*)df_header + le32_to_cpu(df_header->fek_offset);
/* Decrypt the FEK. Note: This is done in place. */
fek_size = ntfs_raw_fek_decrypt(fek_buf, fek_size, rsa_key);
if (fek_size) {
/* Convert the FEK to our internal format. */
fek = ntfs_fek_import_from_raw(fek_buf, fek_size);
if (fek)
return fek;
ntfs_log_error("Failed to convert the decrypted file "
"encryption key to internal format.\n");
} else
ntfs_log_error("Failed to decrypt the file "
"encryption key.\n");
}
return NULL;
}
/**
* ntfs_ucstombs - convert a little endian Unicode string to a multibyte string
* @ins: input Unicode string buffer
* @ins_len: length of input string in Unicode characters
* @outs: on return contains the (allocated) output multibyte string
* @outs_len: length of output buffer in bytes
*
* Convert the input little endian, 2-byte Unicode string @ins, of length
* @ins_len into the multibyte string format dictated by the current locale.
*
* If *@outs is NULL, the function allocates the string and the caller is
* responsible for calling free(*@outs); when finished with it.
*
* On success the function returns the number of bytes written to the output
* string *@outs (>= 0), not counting the terminating NULL byte. If the output
* string buffer was allocated, *@outs is set to it.
*
* On error, -1 is returned, and errno is set to the error code. The following
* error codes can be expected:
* EINVAL Invalid arguments (e.g. @ins or @outs is NULL).
* EILSEQ The input string cannot be represented as a multibyte
* sequence according to the current locale.
* ENAMETOOLONG Destination buffer is too small for input string.
* ENOMEM Not enough memory to allocate destination buffer.
*/
int ntfs_ucstombs(const ntfschar *ins, const int ins_len, char **outs,
int outs_len)
{
char *mbs;
wchar_t wc;
int i, o, mbs_len;
int cnt = 0;
#ifdef HAVE_MBSINIT
mbstate_t mbstate;
#endif
if (!ins || !outs) {
errno = EINVAL;
return -1;
}
mbs = *outs;
mbs_len = outs_len;
if (mbs && !mbs_len) {
errno = ENAMETOOLONG;
return -1;
}
if (!mbs) {
mbs_len = (ins_len + 1) * MB_CUR_MAX;
mbs = (char*)malloc(mbs_len);
if (!mbs)
return -1;
}
#ifdef HAVE_MBSINIT
memset(&mbstate, 0, sizeof(mbstate));
#else
wctomb(NULL, 0);
#endif
for (i = o = 0; i < ins_len; i++) {
/* Reallocate memory if necessary or abort. */
if ((int)(o + MB_CUR_MAX) > mbs_len) {
char *tc;
if (mbs == *outs) {
errno = ENAMETOOLONG;
return -1;
}
tc = (char*)malloc((mbs_len + 64) & ~63);
if (!tc)
goto err_out;
memcpy(tc, mbs, mbs_len);
mbs_len = (mbs_len + 64) & ~63;
free(mbs);
mbs = tc;
}
/* Convert the LE Unicode character to a CPU wide character. */
wc = (wchar_t)le16_to_cpu(ins[i]);
if (!wc)
break;
/* Convert the CPU endian wide character to multibyte. */
#ifdef HAVE_MBSINIT
cnt = wcrtomb(mbs + o, wc, &mbstate);
#else
cnt = wctomb(mbs + o, wc);
#endif
if (cnt == -1)
goto err_out;
if (cnt <= 0) {
ntfs_log_debug("Eeek. cnt <= 0, cnt = %i\n", cnt);
errno = EINVAL;
goto err_out;
}
o += cnt;
}
#ifdef HAVE_MBSINIT
/* Make sure we are back in the initial state. */
if (!mbsinit(&mbstate)) {
ntfs_log_debug("Eeek. mbstate not in initial state!\n");
errno = EILSEQ;
goto err_out;
}
#endif
/* Now write the NULL character. */
mbs[o] = '\0';
if (*outs != mbs)
*outs = mbs;
return o;
err_out:
if (mbs != *outs) {
int eo = errno;
free(mbs);
errno = eo;
}
return -1;
}
/*
* ntfs_names_full_collate() fully collate two Unicode names
*
* @name1: first Unicode name to compare
* @name1_len: length of first Unicode name to compare
* @name2: second Unicode name to compare
* @name2_len: length of second Unicode name to compare
* @ic: either CASE_SENSITIVE or IGNORE_CASE
* @upcase: upcase table (ignored if @ic is CASE_SENSITIVE)
* @upcase_len: upcase table size (ignored if @ic is CASE_SENSITIVE)
*
* -1 if the first name collates before the second one,
* 0 if the names match,
* 1 if the second name collates before the first one, or
*
*/
int ntfs_names_full_collate(const ntfschar *name1, const u32 name1_len,
const ntfschar *name2, const u32 name2_len,
const IGNORE_CASE_BOOL ic, const ntfschar *upcase,
const u32 upcase_len)
{
u32 cnt;
u16 c1, c2;
u16 u1, u2;
#ifdef DEBUG
if (!name1 || !name2 || (ic && (!upcase || !upcase_len))) {
ntfs_log_debug("ntfs_names_collate received NULL pointer!\n");
exit(1);
}
#endif
cnt = min(name1_len, name2_len);
if (cnt > 0) {
if (ic == CASE_SENSITIVE) {
while (--cnt && (*name1 == *name2)) {
name1++;
name2++;
}
u1 = c1 = le16_to_cpu(*name1);
u2 = c2 = le16_to_cpu(*name2);
if (u1 < upcase_len)
u1 = le16_to_cpu(upcase[u1]);
if (u2 < upcase_len)
u2 = le16_to_cpu(upcase[u2]);
if ((u1 == u2) && cnt)
do {
name1++;
u1 = le16_to_cpu(*name1);
name2++;
u2 = le16_to_cpu(*name2);
if (u1 < upcase_len)
u1 = le16_to_cpu(upcase[u1]);
if (u2 < upcase_len)
u2 = le16_to_cpu(upcase[u2]);
} while ((u1 == u2) && --cnt);
if (u1 < u2)
return -1;
if (u1 > u2)
return 1;
if (name1_len < name2_len)
return -1;
if (name1_len > name2_len)
return 1;
if (c1 < c2)
return -1;
if (c1 > c2)
return 1;
} else {
do {
u1 = c1 = le16_to_cpu(*name1);
name1++;
u2 = c2 = le16_to_cpu(*name2);
name2++;
if (u1 < upcase_len)
u1 = le16_to_cpu(upcase[u1]);
if (u2 < upcase_len)
u2 = le16_to_cpu(upcase[u2]);
} while ((u1 == u2) && --cnt);
if (u1 < u2)
return -1;
if (u1 > u2)
return 1;
if (name1_len < name2_len)
return -1;
if (name1_len > name2_len)
return 1;
}
} else {
if (name1_len < name2_len)
return -1;
if (name1_len > name2_len)
return 1;
}
return 0;
}
bool ntfsMount (const char *name, const DISC_INTERFACE *interface, sec_t startSector, u32 cachePageCount, u32 cachePageSize, u32 flags)
{
ntfs_vd *vd = NULL;
gekko_fd *fd = NULL;
// Sanity check
if (!name || !interface) {
errno = EINVAL;
return -1;
}
// Initialise ntfs-3g
ntfsInit();
// Check that the requested mount name is free
if (ntfsGetDevice(name, false)) {
errno = EADDRINUSE;
return false;
}
// Check that we can at least read from this device
if (!(interface->features & FEATURE_MEDIUM_CANREAD)) {
errno = EPERM;
return false;
}
// Allocate the volume descriptor
vd = (ntfs_vd*)ntfs_alloc(sizeof(ntfs_vd));
if (!vd) {
errno = ENOMEM;
return false;
}
// Setup the volume descriptor
vd->id = interface->ioType;
vd->flags = 0;
vd->uid = 0;
vd->gid = 0;
vd->fmask = 0;
vd->dmask = 0;
vd->atime = ((flags & NTFS_UPDATE_ACCESS_TIMES) ? ATIME_ENABLED : ATIME_DISABLED);
vd->showHiddenFiles = (flags & NTFS_SHOW_HIDDEN_FILES);
vd->showSystemFiles = (flags & NTFS_SHOW_SYSTEM_FILES);
// Allocate the device driver descriptor
fd = (gekko_fd*)ntfs_alloc(sizeof(gekko_fd));
if (!fd) {
ntfs_free(vd);
errno = ENOMEM;
return false;
}
// Setup the device driver descriptor
fd->interface = interface;
fd->startSector = startSector;
fd->sectorSize = 0;
fd->sectorCount = 0;
fd->cachePageCount = cachePageCount;
fd->cachePageSize = cachePageSize;
// Allocate the device driver
vd->dev = ntfs_device_alloc(name, 0, &ntfs_device_gekko_io_ops, fd);
if (!vd->dev) {
ntfs_free(fd);
ntfs_free(vd);
return false;
}
// Build the mount flags
if (flags & NTFS_READ_ONLY)
vd->flags |= MS_RDONLY;
else
{
if (!(interface->features & FEATURE_MEDIUM_CANWRITE))
vd->flags |= MS_RDONLY;
if ((interface->features & FEATURE_MEDIUM_CANREAD) && (interface->features & FEATURE_MEDIUM_CANWRITE))
vd->flags |= MS_EXCLUSIVE;
}
if (flags & NTFS_RECOVER)
vd->flags |= MS_RECOVER;
if (flags & NTFS_IGNORE_HIBERFILE)
vd->flags |= MS_IGNORE_HIBERFILE;
if (vd->flags & MS_RDONLY)
ntfs_log_debug("Mounting \"%s\" as read-only\n", name);
// Mount the device
vd->vol = ntfs_device_mount(vd->dev, vd->flags);
if (!vd->vol) {
switch(ntfs_volume_error(errno)) {
case NTFS_VOLUME_NOT_NTFS:
errno = EINVALPART;
break;
case NTFS_VOLUME_CORRUPT:
errno = EINVALPART;
break;
case NTFS_VOLUME_HIBERNATED:
errno = EHIBERNATED;
break;
case NTFS_VOLUME_UNCLEAN_UNMOUNT:
errno = EDIRTY;
break;
default:
errno = EINVAL;
break;
}
ntfs_device_free(vd->dev);
ntfs_free(vd);
return false;
}
// Initialise the volume descriptor
if (ntfsInitVolume(vd)) {
ntfs_umount(vd->vol, true);
ntfs_free(vd);
return false;
}
// Add the device to the devoptab table
if (ntfsAddDevice(name, vd)) {
ntfsDeinitVolume(vd);
ntfs_umount(vd->vol, true);
ntfs_free(vd);
return false;
}
return true;
}
int ntfsFindPartitions (const DISC_INTERFACE *interface, sec_t **partitions)
{
MASTER_BOOT_RECORD mbr;
PARTITION_RECORD *partition = NULL;
sec_t partition_starts[NTFS_MAX_PARTITIONS] = {0};
int partition_count = 0;
sec_t part_lba = 0;
int i;
union {
u8 buffer[BYTES_PER_SECTOR];
MASTER_BOOT_RECORD mbr;
EXTENDED_BOOT_RECORD ebr;
NTFS_BOOT_SECTOR boot;
} sector;
// Sanity check
if (!interface) {
errno = EINVAL;
return -1;
}
if (!partitions)
return 0;
// Initialise ntfs-3g
ntfsInit();
// Start the device and check that it is inserted
if (!interface->startup()) {
errno = EIO;
return -1;
}
if (!interface->isInserted()) {
return 0;
}
// Read the first sector on the device
if (!interface->readSectors(0, 1, §or.buffer)) {
errno = EIO;
return -1;
}
// If this is the devices master boot record
if (sector.mbr.signature == MBR_SIGNATURE) {
memcpy(&mbr, §or, sizeof(MASTER_BOOT_RECORD));
ntfs_log_debug("Valid Master Boot Record found\n");
// Search the partition table for all NTFS partitions (max. 4 primary partitions)
for (i = 0; i < 4; i++) {
partition = &mbr.partitions[i];
part_lba = le32_to_cpu(mbr.partitions[i].lba_start);
ntfs_log_debug("Partition %i: %s, sector %d, type 0x%x\n", i + 1,
partition->status == PARTITION_STATUS_BOOTABLE ? "bootable (active)" : "non-bootable",
part_lba, partition->type);
// Figure out what type of partition this is
switch (partition->type) {
// Ignore empty partitions
case PARTITION_TYPE_EMPTY:
continue;
// NTFS partition
case PARTITION_TYPE_NTFS: {
ntfs_log_debug("Partition %i: Claims to be NTFS\n", i + 1);
// Read and validate the NTFS partition
if (interface->readSectors(part_lba, 1, §or)) {
if (sector.boot.oem_id == NTFS_OEM_ID) {
ntfs_log_debug("Partition %i: Valid NTFS boot sector found\n", i + 1);
if (partition_count < NTFS_MAX_PARTITIONS) {
partition_starts[partition_count] = part_lba;
partition_count++;
}
} else {
ntfs_log_debug("Partition %i: Invalid NTFS boot sector, not actually NTFS\n", i + 1);
}
}
break;
}
// DOS 3.3+ or Windows 95 extended partition
case PARTITION_TYPE_DOS33_EXTENDED:
case PARTITION_TYPE_WIN95_EXTENDED: {
ntfs_log_debug("Partition %i: Claims to be Extended\n", i + 1);
// Walk the extended partition chain, finding all NTFS partitions within it
sec_t ebr_lba = part_lba;
sec_t next_erb_lba = 0;
do {
// Read and validate the extended boot record
if (interface->readSectors(ebr_lba + next_erb_lba, 1, §or)) {
if (sector.ebr.signature == EBR_SIGNATURE) {
ntfs_log_debug("Logical Partition @ %d: type 0x%x\n", ebr_lba + next_erb_lba,
sector.ebr.partition.status == PARTITION_STATUS_BOOTABLE ? "bootable (active)" : "non-bootable",
sector.ebr.partition.type);
// Get the start sector of the current partition
// and the next extended boot record in the chain
part_lba = ebr_lba + next_erb_lba + le32_to_cpu(sector.ebr.partition.lba_start);
next_erb_lba = le32_to_cpu(sector.ebr.next_ebr.lba_start);
// Check if this partition has a valid NTFS boot record
if (interface->readSectors(part_lba, 1, §or)) {
if (sector.boot.oem_id == NTFS_OEM_ID) {
ntfs_log_debug("Logical Partition @ %d: Valid NTFS boot sector found\n", part_lba);
if(sector.ebr.partition.type != PARTITION_TYPE_NTFS) {
ntfs_log_warning("Logical Partition @ %d: Is NTFS but type is 0x%x; 0x%x was expected\n", part_lba, sector.ebr.partition.type, PARTITION_TYPE_NTFS);
}
if (partition_count < NTFS_MAX_PARTITIONS) {
partition_starts[partition_count] = part_lba;
partition_count++;
}
}
}
} else {
next_erb_lba = 0;
}
}
} while (next_erb_lba);
break;
}
// Unknown or unsupported partition type
default: {
// Check if this partition has a valid NTFS boot record anyway,
// it might be misrepresented due to a lazy partition editor
if (interface->readSectors(part_lba, 1, §or)) {
if (sector.boot.oem_id == NTFS_OEM_ID) {
ntfs_log_debug("Partition %i: Valid NTFS boot sector found\n", i + 1);
if(partition->type != PARTITION_TYPE_NTFS) {
ntfs_log_warning("Partition %i: Is NTFS but type is 0x%x; 0x%x was expected\n", i + 1, partition->type, PARTITION_TYPE_NTFS);
}
if (partition_count < NTFS_MAX_PARTITIONS) {
partition_starts[partition_count] = part_lba;
partition_count++;
}
}
}
break;
}
}
}
// Else it is assumed this device has no master boot record
} else {
ntfs_log_debug("No Master Boot Record was found!\n");
// As a last-ditched effort, search the first 64 sectors of the device for stray NTFS partitions
for (i = 0; i < 64; i++) {
if (interface->readSectors(i, 1, §or)) {
if (sector.boot.oem_id == NTFS_OEM_ID) {
ntfs_log_debug("Valid NTFS boot sector found at sector %d!\n", i);
if (partition_count < NTFS_MAX_PARTITIONS) {
partition_starts[partition_count] = i;
partition_count++;
}
}
}
}
}
// Shutdown the device
/*interface->shutdown();*/
// Return the found partitions (if any)
if (partition_count > 0) {
*partitions = (sec_t*)ntfs_alloc(sizeof(sec_t) * partition_count);
if (*partitions) {
memcpy(*partitions, &partition_starts, sizeof(sec_t) * partition_count);
return partition_count;
}
}
return 0;
}
/**
* ntfs_boot_sector_is_ntfs - check if buffer contains a valid ntfs boot sector
* @b: buffer containing putative boot sector to analyze
* @silent: if zero, output progress messages to stderr
*
* Check if the buffer @b contains a valid ntfs boot sector. The buffer @b
* must be at least 512 bytes in size.
*
* If @silent is zero, output progress messages to stderr. Otherwise, do not
* output any messages (except when configured with --enable-debug in which
* case warning/debug messages may be displayed).
*
* Return TRUE if @b contains a valid ntfs boot sector and FALSE if not.
*/
BOOL ntfs_boot_sector_is_ntfs(NTFS_BOOT_SECTOR *b, const BOOL silent __attribute__((unused)))
{
u32 i;
ntfs_log_debug("\nBeginning bootsector check...\n");
/* Calculate the checksum. Note, this is just a simple addition of
all u32 values in the bootsector starting at the beginning and
finishing at the offset of the checksum itself (i.e. not including
the checksum...). */
if ((void*)b < (void*)&b->checksum) {
u32 *u = (u32 *)b;
u32 *bi = (u32 *)(&b->checksum);
ntfs_log_debug("Calculating bootsector checksum... ");
for (i = 0; u < bi; ++u)
i += le32_to_cpup(u);
if (le32_to_cpu(b->checksum) && le32_to_cpu(b->checksum) != i)
goto not_ntfs;
ntfs_log_debug("OK\n");
}
/* Check OEMidentifier is "NTFS " */
ntfs_log_debug("Checking OEMid... ");
if (b->oem_id != cpu_to_le64(0x202020205346544eULL)) /* "NTFS " */
goto not_ntfs;
ntfs_log_debug("OK\n");
/* Check bytes per sector value is between 256 and 4096. */
ntfs_log_debug("Checking bytes per sector... ");
if (le16_to_cpu(b->bpb.bytes_per_sector) < 0x100 ||
le16_to_cpu(b->bpb.bytes_per_sector) > 0x1000)
goto not_ntfs;
ntfs_log_debug("OK\n");
/* Check sectors per cluster value is valid. */
ntfs_log_debug("Checking sectors per cluster... ");
switch (b->bpb.sectors_per_cluster) {
case 1: case 2: case 4: case 8: case 16: case 32: case 64: case 128:
break;
default:
goto not_ntfs;
}
ntfs_log_debug("OK\n");
/* Check the cluster size is not above 65536 bytes. */
ntfs_log_debug("Checking cluster size... ");
if ((u32)le16_to_cpu(b->bpb.bytes_per_sector) *
b->bpb.sectors_per_cluster > 0x10000)
goto not_ntfs;
ntfs_log_debug("OK\n");
/* Check reserved/unused fields are really zero. */
ntfs_log_debug("Checking reserved fields are zero... ");
if (le16_to_cpu(b->bpb.reserved_sectors) ||
le16_to_cpu(b->bpb.root_entries) ||
le16_to_cpu(b->bpb.sectors) ||
le16_to_cpu(b->bpb.sectors_per_fat) ||
le32_to_cpu(b->bpb.large_sectors) ||
b->bpb.fats)
goto not_ntfs;
ntfs_log_debug("OK\n");
/* Check clusters per file mft record value is valid. */
ntfs_log_debug("Checking clusters per mft record... ");
if ((u8)b->clusters_per_mft_record < 0xe1 ||
(u8)b->clusters_per_mft_record > 0xf7) {
switch (b->clusters_per_mft_record) {
case 1: case 2: case 4: case 8: case 0x10: case 0x20: case 0x40:
break;
default:
goto not_ntfs;
}
}
ntfs_log_debug("OK\n");
/* Check clusters per index block value is valid. */
ntfs_log_debug("Checking clusters per index block... ");
if ((u8)b->clusters_per_index_record < 0xe1 ||
(u8)b->clusters_per_index_record > 0xf7) {
switch (b->clusters_per_index_record) {
case 1: case 2: case 4: case 8: case 0x10: case 0x20: case 0x40:
break;
default:
goto not_ntfs;
}
}
ntfs_log_debug("OK\n");
if (b->end_of_sector_marker != cpu_to_le16(0xaa55))
ntfs_log_debug("Warning: Bootsector has invalid end of sector marker.\n");
ntfs_log_debug("Bootsector check completed successfully.\n");
return TRUE;
not_ntfs:
ntfs_log_debug("FAILED\n");
ntfs_log_debug("Bootsector check failed. Aborting...\n");
return FALSE;
}
