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1da177e4 LT |
1 | #ifndef _LINUX_BLKPG_H |
2 | #define _LINUX_BLKPG_H | |
3 | ||
4 | /* | |
5 | * Partition table and disk geometry handling | |
6 | * | |
7 | * A single ioctl with lots of subfunctions: | |
8 | * | |
9 | * Device number stuff: | |
10 | * get_whole_disk() (given the device number of a partition, | |
11 | * find the device number of the encompassing disk) | |
12 | * get_all_partitions() (given the device number of a disk, return the | |
13 | * device numbers of all its known partitions) | |
14 | * | |
15 | * Partition stuff: | |
16 | * add_partition() | |
17 | * delete_partition() | |
18 | * test_partition_in_use() (also for test_disk_in_use) | |
19 | * | |
20 | * Geometry stuff: | |
21 | * get_geometry() | |
22 | * set_geometry() | |
23 | * get_bios_drivedata() | |
24 | * | |
25 | * For today, only the partition stuff - aeb, 990515 | |
26 | */ | |
acc429a5 | 27 | #include <linux/compiler.h> |
1da177e4 LT |
28 | #include <linux/ioctl.h> |
29 | ||
30 | #define BLKPG _IO(0x12,105) | |
31 | ||
32 | /* The argument structure */ | |
33 | struct blkpg_ioctl_arg { | |
34 | int op; | |
35 | int flags; | |
36 | int datalen; | |
37 | void __user *data; | |
38 | }; | |
39 | ||
40 | /* The subfunctions (for the op field) */ | |
41 | #define BLKPG_ADD_PARTITION 1 | |
42 | #define BLKPG_DEL_PARTITION 2 | |
c83f6bf9 | 43 | #define BLKPG_RESIZE_PARTITION 3 |
1da177e4 LT |
44 | |
45 | /* Sizes of name fields. Unused at present. */ | |
46 | #define BLKPG_DEVNAMELTH 64 | |
47 | #define BLKPG_VOLNAMELTH 64 | |
48 | ||
49 | /* The data structure for ADD_PARTITION and DEL_PARTITION */ | |
50 | struct blkpg_partition { | |
51 | long long start; /* starting offset in bytes */ | |
52 | long long length; /* length in bytes */ | |
53 | int pno; /* partition number */ | |
54 | char devname[BLKPG_DEVNAMELTH]; /* partition name, like sda5 or c0d1p2, | |
55 | to be used in kernel messages */ | |
56 | char volname[BLKPG_VOLNAMELTH]; /* volume label */ | |
57 | }; | |
58 | ||
59 | #endif /* _LINUX_BLKPG_H */ |