ntfs/libntfs/device.c

86 #define BLKGETSIZE	_IO(0x12,96)  /* Get device size in 512-byte blocks. */
89 #define BLKGETSIZE64	_IOR(0x12,114,size_t)	/* Get device size in bytes. */
95 #	define BLKSSZGET _IO(0x12,104) /* Get device sector size in bytes. */
98 #	define BLKBSZSET _IOW(0x12,113,size_t) /* Set device block size in bytes. */
308  * @bksize:	size of each block that needs mst deprotecting
312  * blocks of size @bksize bytes each from device @dev at position @pos into the
364  * @bksize:	size of each block that needs mst protecting
368  * @count blocks of size @bksize bytes each from data buffer @b to the device
521  * ntfs_device_size_get - return the size of a device in blocks
523  * @block_size:	block size in bytes in which to return the result
541 	{	u64 size;
543 		if (dev->d_ops->ioctl(dev, BLKGETSIZE64, &size) >= 0) {
545 					(unsigned long long)size,
546 					(unsigned long long)size);
547 			return (s64)size / block_size;
552 	{	unsigned long size;
554 		if (dev->d_ops->ioctl(dev, BLKGETSIZE, &size) >= 0) {
556 					size, size);
557 			return (s64)size * 512 / block_size;
566 					(unsigned long)this_floppy.size,
567 					(unsigned long)this_floppy.size);
568 			return (s64)this_floppy.size * 512 / block_size;
575 		off_t size;
577 		if (dev->d_ops->ioctl(dev, DIOCGMEDIASIZE, &size) >= 0) {
579 					(unsigned long long)size,
580 					(unsigned long long)size);
581 			return (s64)size / block_size;
604 		off_t size = 0;
610 			size = partitionInfo.size;
612 			size = (off_t)geometry.cylinder_count * geometry.sectors_per_track
616 		if (size > 0)
617 			return (s64)size / block_size;
623 	 * so do binary search to find the size of the device.
860  * ntfs_device_sector_size_get - get sector size of a device
863  * On success, return the sector size in bytes of the device @dev.
882 			ntfs_log_debug("BLKSSZGET sector size = %d bytes\n",
893 			ntfs_log_debug("DIOCGSECTORSIZE sector size = %d bytes\n",
904 			ntfs_log_debug("DKIOCGETBLOCKSIZE sector size = %d bytes\n",
916  * ntfs_device_block_size_set - set block size of a device
918  * @block_size: block size to set @dev to
939 			ntfs_log_debug("Used BLKBSZSET to set block size to "