fs/ceph/ioctl.h

   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
  21 /*
  22  * Extract identity, address of the OSD and object storing a given
  23  * file offset.
  24  */
  25 struct ceph_ioctl_dataloc {
  26         __u64 file_offset;           /* in+out: file offset */
  27         __u64 object_offset;         /* out: offset in object */
  28         __u64 object_no;             /* out: object # */
  29         __u64 object_size;           /* out: object size */
  30         char object_name[64];        /* out: object name */
  31         __u64 block_offset;          /* out: offset in block */
  32         __u64 block_size;            /* out: block length */
  33         __s64 osd;                   /* out: osd # */
  34         struct sockaddr_storage osd_addr; /* out: osd address */
  35 };
  36
  37 #define CEPH_IOC_GET_DATALOC _IOWR(CEPH_IOCTL_MAGIC, 3, \
  38                                    struct ceph_ioctl_dataloc)
  39
  40 #define CEPH_IOC_LAZYIO _IO(CEPH_IOCTL_MAGIC, 4)
  41
  42 #endif