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 */
10 struct 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  */
27 struct 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
45