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1#ifndef FS_CEPH_IOCTL_H
2#define FS_CEPH_IOCTL_H
3
4#include <linux/ioctl.h>
5#include <linux/types.h>
6
7#define CEPH_IOCTL_MAGIC 0x97
8
9/* just use u64 to align sanely on all archs */
10struct ceph_ioctl_layout {
11 __u64 stripe_unit, stripe_count, object_size;
12 __u64 data_pool;
13 __s64 preferred_osd;
14};
15
16#define CEPH_IOC_GET_LAYOUT _IOR(CEPH_IOCTL_MAGIC, 1, \
17 struct ceph_ioctl_layout)
18#define CEPH_IOC_SET_LAYOUT _IOW(CEPH_IOCTL_MAGIC, 2, \
19 struct ceph_ioctl_layout)
20#define CEPH_IOC_SET_LAYOUT_POLICY _IOW(CEPH_IOCTL_MAGIC, 5, \
21 struct ceph_ioctl_layout)
22
23/*
24 * Extract identity, address of the OSD and object storing a given
25 * file offset.
26 */
27struct ceph_ioctl_dataloc {
28 __u64 file_offset; /* in+out: file offset */
29 __u64 object_offset; /* out: offset in object */
30 __u64 object_no; /* out: object # */
31 __u64 object_size; /* out: object size */
32 char object_name[64]; /* out: object name */
33 __u64 block_offset; /* out: offset in block */
34 __u64 block_size; /* out: block length */
35 __s64 osd; /* out: osd # */
36 struct sockaddr_storage osd_addr; /* out: osd address */
37};
38
39#define CEPH_IOC_GET_DATALOC _IOWR(CEPH_IOCTL_MAGIC, 3, \
40 struct ceph_ioctl_dataloc)
41
42#define CEPH_IOC_LAZYIO _IO(CEPH_IOCTL_MAGIC, 4)
43
44#endif