summaryrefslogtreecommitdiff
path: root/partx/partx.h
blob: b40fa8fbd93c6be975edb9227c6b39cf6679bb99 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
#ifndef UTIL_LINUX_PARTX_H
#define UTIL_LINUX_PARTX_H

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

static inline int partx_del_partition(int fd, int partno)
{
	struct blkpg_ioctl_arg a;
	struct blkpg_partition p;

	p.pno = partno;
	p.start = 0;
	p.length = 0;
	p.devname[0] = 0;
	p.volname[0] = 0;
	a.op = BLKPG_DEL_PARTITION;
	a.flags = 0;
	a.datalen = sizeof(p);
	a.data = &p;

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

static inline int partx_add_partition(int fd, int partno,
			unsigned long start, unsigned long size)
{
	struct blkpg_ioctl_arg a;
	struct blkpg_partition p;

	p.pno = partno;
	p.start = start << 9;
	p.length = size << 9;
	p.devname[0] = 0;
	p.volname[0] = 0;
	a.op = BLKPG_ADD_PARTITION;
	a.flags = 0;
	a.datalen = sizeof(p);
	a.data = &p;

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

#endif /*  UTIL_LINUX_PARTX_H */