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#define CEPH_IOC_SYNCIO _IO(CEPH_IOCTL_MAGIC, 5)
44
45#endif