| #ifndef _LINUX_BLKPG_H |
| #define _LINUX_BLKPG_H |
| |
| /* |
| * Partition table and disk geometry handling |
| * |
| * A single ioctl with lots of subfunctions: |
| * |
| * Device number stuff: |
| * get_whole_disk() (given the device number of a partition, |
| * find the device number of the encompassing disk) |
| * get_all_partitions() (given the device number of a disk, return the |
| * device numbers of all its known partitions) |
| * |
| * Partition stuff: |
| * add_partition() |
| * delete_partition() |
| * test_partition_in_use() (also for test_disk_in_use) |
| * |
| * Geometry stuff: |
| * get_geometry() |
| * set_geometry() |
| * get_bios_drivedata() |
| * |
| * For today, only the partition stuff - aeb, 990515 |
| */ |
| #include <linux/ioctl.h> |
| |
| #define BLKPG _IO(0x12,105) |
| |
| /* The argument structure */ |
| struct blkpg_ioctl_arg { |
| int op; |
| int flags; |
| int datalen; |
| void *data; |
| }; |
| |
| /* The subfunctions (for the op field) */ |
| #define BLKPG_ADD_PARTITION 1 |
| #define BLKPG_DEL_PARTITION 2 |
| |
| /* Sizes of name fields. Unused at present. */ |
| #define BLKPG_DEVNAMELTH 64 |
| #define BLKPG_VOLNAMELTH 64 |
| |
| /* The data structure for ADD_PARTITION and DEL_PARTITION */ |
| struct blkpg_partition { |
| long long start; /* starting offset in bytes */ |
| long long length; /* length in bytes */ |
| int pno; /* partition number */ |
| char devname[BLKPG_DEVNAMELTH]; /* partition name, like sda5 or c0d1p2, |
| to be used in kernel messages */ |
| char volname[BLKPG_VOLNAMELTH]; /* volume label */ |
| }; |
| |
| #ifdef __KERNEL__ |
| |
| extern char * partition_name(kdev_t dev); |
| extern int blk_ioctl(kdev_t dev, unsigned int cmd, unsigned long arg); |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif /* _LINUX_BLKPG_H */ |