1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2*4882a593Smuzhiyun #ifndef _UAPI__LINUX_BLKPG_H 3*4882a593Smuzhiyun #define _UAPI__LINUX_BLKPG_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun /* 6*4882a593Smuzhiyun * Partition table and disk geometry handling 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun * A single ioctl with lots of subfunctions: 9*4882a593Smuzhiyun * 10*4882a593Smuzhiyun * Device number stuff: 11*4882a593Smuzhiyun * get_whole_disk() (given the device number of a partition, 12*4882a593Smuzhiyun * find the device number of the encompassing disk) 13*4882a593Smuzhiyun * get_all_partitions() (given the device number of a disk, return the 14*4882a593Smuzhiyun * device numbers of all its known partitions) 15*4882a593Smuzhiyun * 16*4882a593Smuzhiyun * Partition stuff: 17*4882a593Smuzhiyun * add_partition() 18*4882a593Smuzhiyun * delete_partition() 19*4882a593Smuzhiyun * test_partition_in_use() (also for test_disk_in_use) 20*4882a593Smuzhiyun * 21*4882a593Smuzhiyun * Geometry stuff: 22*4882a593Smuzhiyun * get_geometry() 23*4882a593Smuzhiyun * set_geometry() 24*4882a593Smuzhiyun * get_bios_drivedata() 25*4882a593Smuzhiyun * 26*4882a593Smuzhiyun * For today, only the partition stuff - aeb, 990515 27*4882a593Smuzhiyun */ 28*4882a593Smuzhiyun #include <linux/compiler.h> 29*4882a593Smuzhiyun #include <linux/ioctl.h> 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun #define BLKPG _IO(0x12,105) 32*4882a593Smuzhiyun 33*4882a593Smuzhiyun /* The argument structure */ 34*4882a593Smuzhiyun struct blkpg_ioctl_arg { 35*4882a593Smuzhiyun int op; 36*4882a593Smuzhiyun int flags; 37*4882a593Smuzhiyun int datalen; 38*4882a593Smuzhiyun void __user *data; 39*4882a593Smuzhiyun }; 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun /* The subfunctions (for the op field) */ 42*4882a593Smuzhiyun #define BLKPG_ADD_PARTITION 1 43*4882a593Smuzhiyun #define BLKPG_DEL_PARTITION 2 44*4882a593Smuzhiyun #define BLKPG_RESIZE_PARTITION 3 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun /* Sizes of name fields. Unused at present. */ 47*4882a593Smuzhiyun #define BLKPG_DEVNAMELTH 64 48*4882a593Smuzhiyun #define BLKPG_VOLNAMELTH 64 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun /* The data structure for ADD_PARTITION and DEL_PARTITION */ 51*4882a593Smuzhiyun struct blkpg_partition { 52*4882a593Smuzhiyun long long start; /* starting offset in bytes */ 53*4882a593Smuzhiyun long long length; /* length in bytes */ 54*4882a593Smuzhiyun int pno; /* partition number */ 55*4882a593Smuzhiyun char devname[BLKPG_DEVNAMELTH]; /* partition name, like sda5 or c0d1p2, 56*4882a593Smuzhiyun to be used in kernel messages */ 57*4882a593Smuzhiyun char volname[BLKPG_VOLNAMELTH]; /* volume label */ 58*4882a593Smuzhiyun }; 59*4882a593Smuzhiyun 60*4882a593Smuzhiyun #endif /* _UAPI__LINUX_BLKPG_H */ 61