[thirdparty/util-linux.git] / include / partx.h

#ifndef UTIL_LINUX_PARTX_H
#define UTIL_LINUX_PARTX_H

#include <sys/ioctl.h>
#include <linux/blkpg.h>
#include <stdint.h>

#ifndef BLKPG_ADD_PARTITION
# define BLKPG_ADD_PARTITION	1
#endif

#ifndef BLKPG_DEL_PARTITION
# define BLKPG_DEL_PARTITION	2
#endif

#ifndef BLKPG_RESIZE_PARTITION
# define BLKPG_RESIZE_PARTITION	3		/* since Linux 3.6 */
#endif


#define INIT_BLKPG_PARTITION(_partno, _start, _size) {	\
		.pno    = (_partno),			\
		.start  = (_start) << 9,		\
		.length = (_size) << 9,			\
		.devname[0] = 0,			\
		.volname[0] = 0				\
}

#define INIT_BLKPG_ARG(_action, _part) {		\
		.op      = (_action),			\
		.flags   = 0,				\
		.datalen = sizeof(*(_part)),		\
		.data = (_part)				\
}


static inline int partx_del_partition(int fd, unsigned int partno)
{
	struct blkpg_partition p = INIT_BLKPG_PARTITION(partno, 0, 0);
	struct blkpg_ioctl_arg a = INIT_BLKPG_ARG(BLKPG_DEL_PARTITION, &p);

	return ioctl(fd, BLKPG, &a);
}

static inline int partx_add_partition(int fd, int partno,
			uint64_t start, uint64_t size)
{
	struct blkpg_partition p = INIT_BLKPG_PARTITION(partno, start, size);
	struct blkpg_ioctl_arg a = INIT_BLKPG_ARG(BLKPG_ADD_PARTITION, &p);

	return ioctl(fd, BLKPG, &a);
}

static inline int partx_resize_partition(int fd, int partno,
			uint64_t start, uint64_t size)
{
	struct blkpg_partition p = INIT_BLKPG_PARTITION(partno, start, size);
	struct blkpg_ioctl_arg a = INIT_BLKPG_ARG(BLKPG_RESIZE_PARTITION, &p);

	return ioctl(fd, BLKPG, &a);
}

#endif /*  UTIL_LINUX_PARTX_H */
Commit	Line	Data
c4ecaf21 DB	1	#ifndef UTIL_LINUX_PARTX_H
	2	#define UTIL_LINUX_PARTX_H
	3
	4	#include <sys/ioctl.h>
	5	#include <linux/blkpg.h>
e163adb8	6	#include <stdint.h>
c4ecaf21	7
8863a802 KZ	8	#ifndef BLKPG_ADD_PARTITION
	9	# define BLKPG_ADD_PARTITION 1
	10	#endif
	11
	12	#ifndef BLKPG_DEL_PARTITION
	13	# define BLKPG_DEL_PARTITION 2
	14	#endif
	15
	16	#ifndef BLKPG_RESIZE_PARTITION
	17	# define BLKPG_RESIZE_PARTITION 3 /* since Linux 3.6 */
	18	#endif
	19
24b7db7e KZ	20
	21	#define INIT_BLKPG_PARTITION(_partno, _start, _size) { \
	22	.pno = (_partno), \
	23	.start = (_start) << 9, \
	24	.length = (_size) << 9, \
	25	.devname[0] = 0, \
	26	.volname[0] = 0 \
	27	}
	28
	29	#define INIT_BLKPG_ARG(_action, _part) { \
	30	.op = (_action), \
	31	.flags = 0, \
	32	.datalen = sizeof(*(_part)), \
	33	.data = (_part) \
	34	}
	35
	36
659e5f5b	37	static inline int partx_del_partition(int fd, unsigned int partno)
c4ecaf21	38	{
24b7db7e KZ	39	struct blkpg_partition p = INIT_BLKPG_PARTITION(partno, 0, 0);
24b7db7e KZ	40	struct blkpg_ioctl_arg a = INIT_BLKPG_ARG(BLKPG_DEL_PARTITION, &p);
c4ecaf21 DB	41
	42	return ioctl(fd, BLKPG, &a);
	43	}
22853e4a	44
c4ecaf21	45	static inline int partx_add_partition(int fd, int partno,
659e5f5b	46	uint64_t start, uint64_t size)
c4ecaf21	47	{
24b7db7e KZ	48	struct blkpg_partition p = INIT_BLKPG_PARTITION(partno, start, size);
24b7db7e KZ	49	struct blkpg_ioctl_arg a = INIT_BLKPG_ARG(BLKPG_ADD_PARTITION, &p);
c4ecaf21 DB	50
c4ecaf21 DB	51	return ioctl(fd, BLKPG, &a);
22853e4a	52	}
1d4ad1de	53
8863a802 KZ	54	static inline int partx_resize_partition(int fd, int partno,
	55	uint64_t start, uint64_t size)
	56	{
24b7db7e KZ	57	struct blkpg_partition p = INIT_BLKPG_PARTITION(partno, start, size);
24b7db7e KZ	58	struct blkpg_ioctl_arg a = INIT_BLKPG_ARG(BLKPG_RESIZE_PARTITION, &p);
8863a802 KZ	59
	60	return ioctl(fd, BLKPG, &a);
	61	}
	62
c4ecaf21	63	#endif /* UTIL_LINUX_PARTX_H */