[linux-2.6-block.git] / fs / ceph / rados.h

#ifndef __RADOS_H
#define __RADOS_H

/*
 * Data types for the Ceph distributed object storage layer RADOS
 * (Reliable Autonomic Distributed Object Store).
 */

#include "msgr.h"

/*
 * osdmap encoding versions
 */
#define CEPH_OSDMAP_INC_VERSION     5
#define CEPH_OSDMAP_INC_VERSION_EXT 5
#define CEPH_OSDMAP_VERSION         5
#define CEPH_OSDMAP_VERSION_EXT     5

/*
 * fs id
 */
struct ceph_fsid {
	unsigned char fsid[16];
};

static inline int ceph_fsid_compare(const struct ceph_fsid *a,
				    const struct ceph_fsid *b)
{
	return memcmp(a, b, sizeof(*a));
}

/*
 * ino, object, etc.
 */
typedef __le64 ceph_snapid_t;
#define CEPH_SNAPDIR ((__u64)(-1))  /* reserved for hidden .snap dir */
#define CEPH_NOSNAP  ((__u64)(-2))  /* "head", "live" revision */
#define CEPH_MAXSNAP ((__u64)(-3))  /* largest valid snapid */

struct ceph_timespec {
	__le32 tv_sec;
	__le32 tv_nsec;
} __attribute__ ((packed));


/*
 * object layout - how objects are mapped into PGs
 */
#define CEPH_OBJECT_LAYOUT_HASH     1
#define CEPH_OBJECT_LAYOUT_LINEAR   2
#define CEPH_OBJECT_LAYOUT_HASHINO  3

/*
 * pg layout -- how PGs are mapped onto (sets of) OSDs
 */
#define CEPH_PG_LAYOUT_CRUSH  0
#define CEPH_PG_LAYOUT_HASH   1
#define CEPH_PG_LAYOUT_LINEAR 2
#define CEPH_PG_LAYOUT_HYBRID 3

#define CEPH_PG_MAX_SIZE      16  /* max # osds in a single pg */

/*
 * placement group.
 * we encode this into one __le64.
 */
struct ceph_pg {
	__le16 preferred; /* preferred primary osd */
	__le16 ps;        /* placement seed */
	__le32 pool;      /* object pool */
} __attribute__ ((packed));

/*
 * pg_pool is a set of pgs storing a pool of objects
 *
 *  pg_num -- base number of pseudorandomly placed pgs
 *
 *  pgp_num -- effective number when calculating pg placement.  this
 * is used for pg_num increases.  new pgs result in data being "split"
 * into new pgs.  for this to proceed smoothly, new pgs are intiially
 * colocated with their parents; that is, pgp_num doesn't increase
 * until the new pgs have successfully split.  only _then_ are the new
 * pgs placed independently.
 *
 *  lpg_num -- localized pg count (per device).  replicas are randomly
 * selected.
 *
 *  lpgp_num -- as above.
 */
#define CEPH_PG_TYPE_REP     1
#define CEPH_PG_TYPE_RAID4   2
#define CEPH_PG_POOL_VERSION 2
struct ceph_pg_pool {
	__u8 type;                /* CEPH_PG_TYPE_* */
	__u8 size;                /* number of osds in each pg */
	__u8 crush_ruleset;       /* crush placement rule */
	__u8 object_hash;         /* hash mapping object name to ps */
	__le32 pg_num, pgp_num;   /* number of pg's */
	__le32 lpg_num, lpgp_num; /* number of localized pg's */
	__le32 last_change;       /* most recent epoch changed */
	__le64 snap_seq;          /* seq for per-pool snapshot */
	__le32 snap_epoch;        /* epoch of last snap */
	__le32 num_snaps;
	__le32 num_removed_snap_intervals;
	__le64 uid;
} __attribute__ ((packed));

/*
 * stable_mod func is used to control number of placement groups.
 * similar to straight-up modulo, but produces a stable mapping as b
 * increases over time.  b is the number of bins, and bmask is the
 * containing power of 2 minus 1.
 *
 * b <= bmask and bmask=(2**n)-1
 * e.g., b=12 -> bmask=15, b=123 -> bmask=127
 */
static inline int ceph_stable_mod(int x, int b, int bmask)
{
	if ((x & bmask) < b)
		return x & bmask;
	else
		return x & (bmask >> 1);
}

/*
 * object layout - how a given object should be stored.
 */
struct ceph_object_layout {
	struct ceph_pg ol_pgid;   /* raw pg, with _full_ ps precision. */
	__le32 ol_stripe_unit;    /* for per-object parity, if any */
} __attribute__ ((packed));

/*
 * compound epoch+version, used by storage layer to serialize mutations
 */
struct ceph_eversion {
	__le32 epoch;
	__le64 version;
} __attribute__ ((packed));

/*
 * osd map bits
 */

/* status bits */
#define CEPH_OSD_EXISTS 1
#define CEPH_OSD_UP     2

/* osd weights.  fixed point value: 0x10000 == 1.0 ("in"), 0 == "out" */
#define CEPH_OSD_IN  0x10000
#define CEPH_OSD_OUT 0


/*
 * osd map flag bits
 */
#define CEPH_OSDMAP_NEARFULL (1<<0)  /* sync writes (near ENOSPC) */
#define CEPH_OSDMAP_FULL     (1<<1)  /* no data writes (ENOSPC) */
#define CEPH_OSDMAP_PAUSERD  (1<<2)  /* pause all reads */
#define CEPH_OSDMAP_PAUSEWR  (1<<3)  /* pause all writes */
#define CEPH_OSDMAP_PAUSEREC (1<<4)  /* pause recovery */

/*
 * osd ops
 */
#define CEPH_OSD_OP_MODE       0xf000
#define CEPH_OSD_OP_MODE_RD    0x1000
#define CEPH_OSD_OP_MODE_WR    0x2000
#define CEPH_OSD_OP_MODE_RMW   0x3000
#define CEPH_OSD_OP_MODE_SUB   0x4000

#define CEPH_OSD_OP_TYPE       0x0f00
#define CEPH_OSD_OP_TYPE_LOCK  0x0100
#define CEPH_OSD_OP_TYPE_DATA  0x0200
#define CEPH_OSD_OP_TYPE_ATTR  0x0300
#define CEPH_OSD_OP_TYPE_EXEC  0x0400
#define CEPH_OSD_OP_TYPE_PG    0x0500

enum {
	/** data **/
	/* read */
	CEPH_OSD_OP_READ      = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 1,
	CEPH_OSD_OP_STAT      = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 2,

	/* fancy read */
	CEPH_OSD_OP_MASKTRUNC = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 4,

	/* write */
	CEPH_OSD_OP_WRITE     = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 1,
	CEPH_OSD_OP_WRITEFULL = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 2,
	CEPH_OSD_OP_TRUNCATE  = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 3,
	CEPH_OSD_OP_ZERO      = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 4,
	CEPH_OSD_OP_DELETE    = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 5,

	/* fancy write */
	CEPH_OSD_OP_APPEND    = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 6,
	CEPH_OSD_OP_STARTSYNC = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 7,
	CEPH_OSD_OP_SETTRUNC  = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 8,
	CEPH_OSD_OP_TRIMTRUNC = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 9,

	CEPH_OSD_OP_TMAPUP  = CEPH_OSD_OP_MODE_RMW | CEPH_OSD_OP_TYPE_DATA | 10,
	CEPH_OSD_OP_TMAPPUT = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 11,
	CEPH_OSD_OP_TMAPGET = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 12,

	CEPH_OSD_OP_CREATE  = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 13,

	/** attrs **/
	/* read */
	CEPH_OSD_OP_GETXATTR  = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_ATTR | 1,
	CEPH_OSD_OP_GETXATTRS = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_ATTR | 2,

	/* write */
	CEPH_OSD_OP_SETXATTR  = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_ATTR | 1,
	CEPH_OSD_OP_SETXATTRS = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_ATTR | 2,
	CEPH_OSD_OP_RESETXATTRS = CEPH_OSD_OP_MODE_WR|CEPH_OSD_OP_TYPE_ATTR | 3,
	CEPH_OSD_OP_RMXATTR   = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_ATTR | 4,

	/** subop **/
	CEPH_OSD_OP_PULL           = CEPH_OSD_OP_MODE_SUB | 1,
	CEPH_OSD_OP_PUSH           = CEPH_OSD_OP_MODE_SUB | 2,
	CEPH_OSD_OP_BALANCEREADS   = CEPH_OSD_OP_MODE_SUB | 3,
	CEPH_OSD_OP_UNBALANCEREADS = CEPH_OSD_OP_MODE_SUB | 4,
	CEPH_OSD_OP_SCRUB          = CEPH_OSD_OP_MODE_SUB | 5,

	/** lock **/
	CEPH_OSD_OP_WRLOCK    = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 1,
	CEPH_OSD_OP_WRUNLOCK  = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 2,
	CEPH_OSD_OP_RDLOCK    = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 3,
	CEPH_OSD_OP_RDUNLOCK  = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 4,
	CEPH_OSD_OP_UPLOCK    = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 5,
	CEPH_OSD_OP_DNLOCK    = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 6,

	/** exec **/
	CEPH_OSD_OP_CALL    = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_EXEC | 1,

	/** pg **/
	CEPH_OSD_OP_PGLS      = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_PG | 1,
};

static inline int ceph_osd_op_type_lock(int op)
{
	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_LOCK;
}
static inline int ceph_osd_op_type_data(int op)
{
	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_DATA;
}
static inline int ceph_osd_op_type_attr(int op)
{
	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_ATTR;
}
static inline int ceph_osd_op_type_exec(int op)
{
	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_EXEC;
}
static inline int ceph_osd_op_type_pg(int op)
{
	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_PG;
}

static inline int ceph_osd_op_mode_subop(int op)
{
	return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_SUB;
}
static inline int ceph_osd_op_mode_read(int op)
{
	return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_RD;
}
static inline int ceph_osd_op_mode_modify(int op)
{
	return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_WR;
}

#define CEPH_OSD_TMAP_HDR 'h'
#define CEPH_OSD_TMAP_SET 's'
#define CEPH_OSD_TMAP_RM  'r'

extern const char *ceph_osd_op_name(int op);


/*
 * osd op flags
 *
 * An op may be READ, WRITE, or READ|WRITE.
 */
enum {
	CEPH_OSD_FLAG_ACK = 1,          /* want (or is) "ack" ack */
	CEPH_OSD_FLAG_ONNVRAM = 2,      /* want (or is) "onnvram" ack */
	CEPH_OSD_FLAG_ONDISK = 4,       /* want (or is) "ondisk" ack */
	CEPH_OSD_FLAG_RETRY = 8,        /* resend attempt */
	CEPH_OSD_FLAG_READ = 16,        /* op may read */
	CEPH_OSD_FLAG_WRITE = 32,       /* op may write */
	CEPH_OSD_FLAG_ORDERSNAP = 64,   /* EOLDSNAP if snapc is out of order */
	CEPH_OSD_FLAG_PEERSTAT = 128,   /* msg includes osd_peer_stat */
	CEPH_OSD_FLAG_BALANCE_READS = 256,
	CEPH_OSD_FLAG_PARALLELEXEC = 512, /* execute op in parallel */
	CEPH_OSD_FLAG_PGOP = 1024,      /* pg op, no object */
	CEPH_OSD_FLAG_EXEC = 2048,      /* op may exec */
};

enum {
	CEPH_OSD_OP_FLAG_EXCL = 1,      /* EXCL object create */
};

#define EOLDSNAPC    ERESTART  /* ORDERSNAP flag set; writer has old snapc*/
#define EBLACKLISTED ESHUTDOWN /* blacklisted */

/*
 * an individual object operation.  each may be accompanied by some data
 * payload
 */
struct ceph_osd_op {
	__le16 op;           /* CEPH_OSD_OP_* */
	__le32 flags;        /* CEPH_OSD_FLAG_* */
	union {
		struct {
			__le64 offset, length;
			__le64 truncate_size;
			__le32 truncate_seq;
		} __attribute__ ((packed)) extent;
		struct {
			__le32 name_len;
			__le32 value_len;
		} __attribute__ ((packed)) xattr;
		struct {
			__u8 class_len;
			__u8 method_len;
			__u8 argc;
			__le32 indata_len;
		} __attribute__ ((packed)) cls;
		struct {
			__le64 cookie, count;
		} __attribute__ ((packed)) pgls;
	};
	__le32 payload_len;
} __attribute__ ((packed));

/*
 * osd request message header.  each request may include multiple
 * ceph_osd_op object operations.
 */
struct ceph_osd_request_head {
	__le32 client_inc;                 /* client incarnation */
	struct ceph_object_layout layout;  /* pgid */
	__le32 osdmap_epoch;               /* client's osdmap epoch */

	__le32 flags;

	struct ceph_timespec mtime;        /* for mutations only */
	struct ceph_eversion reassert_version; /* if we are replaying op */

	__le32 object_len;     /* length of object name */

	__le64 snapid;         /* snapid to read */
	__le64 snap_seq;       /* writer's snap context */
	__le32 num_snaps;

	__le16 num_ops;
	struct ceph_osd_op ops[];  /* followed by ops[], obj, ticket, snaps */
} __attribute__ ((packed));

struct ceph_osd_reply_head {
	__le32 client_inc;                /* client incarnation */
	__le32 flags;
	struct ceph_object_layout layout;
	__le32 osdmap_epoch;
	struct ceph_eversion reassert_version; /* for replaying uncommitted */

	__le32 result;                    /* result code */

	__le32 object_len;                /* length of object name */
	__le32 num_ops;
	struct ceph_osd_op ops[0];  /* ops[], object */
} __attribute__ ((packed));


#endif
Commit	Line	Data
0dee3c28 SW	1	#ifndef __RADOS_H
	2	#define __RADOS_H
	3
	4	/*
	5	* Data types for the Ceph distributed object storage layer RADOS
	6	* (Reliable Autonomic Distributed Object Store).
	7	*/
	8
	9	#include "msgr.h"
	10
02f90c61 SW	11	/*
	12	* osdmap encoding versions
	13	*/
2844a76a SW	14	#define CEPH_OSDMAP_INC_VERSION 5
	15	#define CEPH_OSDMAP_INC_VERSION_EXT 5
	16	#define CEPH_OSDMAP_VERSION 5
	17	#define CEPH_OSDMAP_VERSION_EXT 5
02f90c61	18
0dee3c28 SW	19	/*
	20	* fs id
	21	*/
	22	struct ceph_fsid {
	23	unsigned char fsid[16];
	24	};
	25
	26	static inline int ceph_fsid_compare(const struct ceph_fsid *a,
	27	const struct ceph_fsid *b)
	28	{
	29	return memcmp(a, b, sizeof(*a));
	30	}
	31
	32	/*
	33	* ino, object, etc.
	34	*/
	35	typedef __le64 ceph_snapid_t;
	36	#define CEPH_SNAPDIR ((__u64)(-1)) /* reserved for hidden .snap dir */
	37	#define CEPH_NOSNAP ((__u64)(-2)) /* "head", "live" revision */
	38	#define CEPH_MAXSNAP ((__u64)(-3)) /* largest valid snapid */
	39
	40	struct ceph_timespec {
	41	__le32 tv_sec;
	42	__le32 tv_nsec;
	43	} __attribute__ ((packed));
	44
	45
	46	/*
	47	* object layout - how objects are mapped into PGs
	48	*/
	49	#define CEPH_OBJECT_LAYOUT_HASH 1
	50	#define CEPH_OBJECT_LAYOUT_LINEAR 2
	51	#define CEPH_OBJECT_LAYOUT_HASHINO 3
	52
	53	/*
	54	* pg layout -- how PGs are mapped onto (sets of) OSDs
	55	*/
	56	#define CEPH_PG_LAYOUT_CRUSH 0
	57	#define CEPH_PG_LAYOUT_HASH 1
	58	#define CEPH_PG_LAYOUT_LINEAR 2
	59	#define CEPH_PG_LAYOUT_HYBRID 3
	60
d85b7056	61	#define CEPH_PG_MAX_SIZE 16 /* max # osds in a single pg */
0dee3c28 SW	62
	63	/*
	64	* placement group.
	65	* we encode this into one __le64.
	66	*/
51042122 SW	67	struct ceph_pg {
	68	__le16 preferred; /* preferred primary osd */
	69	__le16 ps; /* placement seed */
	70	__le32 pool; /* object pool */
0dee3c28 SW	71	} __attribute__ ((packed));
	72
	73	/*
	74	* pg_pool is a set of pgs storing a pool of objects
	75	*
	76	* pg_num -- base number of pseudorandomly placed pgs
	77	*
	78	* pgp_num -- effective number when calculating pg placement. this
	79	* is used for pg_num increases. new pgs result in data being "split"
	80	* into new pgs. for this to proceed smoothly, new pgs are intiially
	81	* colocated with their parents; that is, pgp_num doesn't increase
	82	* until the new pgs have successfully split. only _then_ are the new
	83	* pgs placed independently.
	84	*
	85	* lpg_num -- localized pg count (per device). replicas are randomly
	86	* selected.
	87	*
	88	* lpgp_num -- as above.
	89	*/
	90	#define CEPH_PG_TYPE_REP 1
	91	#define CEPH_PG_TYPE_RAID4 2
02f90c61	92	#define CEPH_PG_POOL_VERSION 2
0dee3c28 SW	93	struct ceph_pg_pool {
	94	__u8 type; /* CEPH_PG_TYPE_* */
	95	__u8 size; /* number of osds in each pg */
	96	__u8 crush_ruleset; /* crush placement rule */
1654dd0c	97	__u8 object_hash; /* hash mapping object name to ps */
0dee3c28 SW	98	__le32 pg_num, pgp_num; /* number of pg's */
	99	__le32 lpg_num, lpgp_num; /* number of localized pg's */
	100	__le32 last_change; /* most recent epoch changed */
	101	__le64 snap_seq; /* seq for per-pool snapshot */
	102	__le32 snap_epoch; /* epoch of last snap */
	103	__le32 num_snaps;
	104	__le32 num_removed_snap_intervals;
02f90c61	105	__le64 uid;
0dee3c28 SW	106	} __attribute__ ((packed));
	107
	108	/*
	109	* stable_mod func is used to control number of placement groups.
	110	* similar to straight-up modulo, but produces a stable mapping as b
	111	* increases over time. b is the number of bins, and bmask is the
	112	* containing power of 2 minus 1.
	113	*
	114	* b <= bmask and bmask=(2**n)-1
	115	* e.g., b=12 -> bmask=15, b=123 -> bmask=127
	116	*/
	117	static inline int ceph_stable_mod(int x, int b, int bmask)
	118	{
	119	if ((x & bmask) < b)
	120	return x & bmask;
	121	else
	122	return x & (bmask >> 1);
	123	}
	124
	125	/*
	126	* object layout - how a given object should be stored.
	127	*/
	128	struct ceph_object_layout {
51042122	129	struct ceph_pg ol_pgid; /* raw pg, with _full_ ps precision. */
0dee3c28 SW	130	__le32 ol_stripe_unit; /* for per-object parity, if any */
	131	} __attribute__ ((packed));
	132
	133	/*
	134	* compound epoch+version, used by storage layer to serialize mutations
	135	*/
	136	struct ceph_eversion {
	137	__le32 epoch;
	138	__le64 version;
	139	} __attribute__ ((packed));
	140
	141	/*
	142	* osd map bits
	143	*/
	144
	145	/* status bits */
	146	#define CEPH_OSD_EXISTS 1
	147	#define CEPH_OSD_UP 2
	148
	149	/* osd weights. fixed point value: 0x10000 == 1.0 ("in"), 0 == "out" */
	150	#define CEPH_OSD_IN 0x10000
	151	#define CEPH_OSD_OUT 0
	152
	153
	154	/*
	155	* osd map flag bits
	156	*/
	157	#define CEPH_OSDMAP_NEARFULL (1<<0) /* sync writes (near ENOSPC) */
	158	#define CEPH_OSDMAP_FULL (1<<1) /* no data writes (ENOSPC) */
	159	#define CEPH_OSDMAP_PAUSERD (1<<2) /* pause all reads */
	160	#define CEPH_OSDMAP_PAUSEWR (1<<3) /* pause all writes */
	161	#define CEPH_OSDMAP_PAUSEREC (1<<4) /* pause recovery */
	162
	163	/*
	164	* osd ops
	165	*/
	166	#define CEPH_OSD_OP_MODE 0xf000
	167	#define CEPH_OSD_OP_MODE_RD 0x1000
	168	#define CEPH_OSD_OP_MODE_WR 0x2000
	169	#define CEPH_OSD_OP_MODE_RMW 0x3000
	170	#define CEPH_OSD_OP_MODE_SUB 0x4000
0dee3c28 SW	171
	172	#define CEPH_OSD_OP_TYPE 0x0f00
	173	#define CEPH_OSD_OP_TYPE_LOCK 0x0100
	174	#define CEPH_OSD_OP_TYPE_DATA 0x0200
	175	#define CEPH_OSD_OP_TYPE_ATTR 0x0300
	176	#define CEPH_OSD_OP_TYPE_EXEC 0x0400
	177	#define CEPH_OSD_OP_TYPE_PG 0x0500
	178
	179	enum {
	180	/ data /
	181	/* read */
	182	CEPH_OSD_OP_READ = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_DATA \| 1,
	183	CEPH_OSD_OP_STAT = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_DATA \| 2,
	184
	185	/* fancy read */
	186	CEPH_OSD_OP_MASKTRUNC = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_DATA \| 4,
	187
	188	/* write */
	189	CEPH_OSD_OP_WRITE = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 1,
	190	CEPH_OSD_OP_WRITEFULL = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 2,
	191	CEPH_OSD_OP_TRUNCATE = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 3,
	192	CEPH_OSD_OP_ZERO = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 4,
	193	CEPH_OSD_OP_DELETE = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 5,
	194
	195	/* fancy write */
	196	CEPH_OSD_OP_APPEND = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 6,
	197	CEPH_OSD_OP_STARTSYNC = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 7,
	198	CEPH_OSD_OP_SETTRUNC = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 8,
	199	CEPH_OSD_OP_TRIMTRUNC = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 9,
	200
	201	CEPH_OSD_OP_TMAPUP = CEPH_OSD_OP_MODE_RMW \| CEPH_OSD_OP_TYPE_DATA \| 10,
	202	CEPH_OSD_OP_TMAPPUT = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 11,
	203	CEPH_OSD_OP_TMAPGET = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_DATA \| 12,
	204
	205	CEPH_OSD_OP_CREATE = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 13,
	206
	207	/ attrs /
	208	/* read */
	209	CEPH_OSD_OP_GETXATTR = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_ATTR \| 1,
	210	CEPH_OSD_OP_GETXATTRS = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_ATTR \| 2,
	211
	212	/* write */
	213	CEPH_OSD_OP_SETXATTR = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_ATTR \| 1,
	214	CEPH_OSD_OP_SETXATTRS = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_ATTR \| 2,
	215	CEPH_OSD_OP_RESETXATTRS = CEPH_OSD_OP_MODE_WR\|CEPH_OSD_OP_TYPE_ATTR \| 3,
	216	CEPH_OSD_OP_RMXATTR = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_ATTR \| 4,
	217
	218	/ subop /
	219	CEPH_OSD_OP_PULL = CEPH_OSD_OP_MODE_SUB \| 1,
	220	CEPH_OSD_OP_PUSH = CEPH_OSD_OP_MODE_SUB \| 2,
	221	CEPH_OSD_OP_BALANCEREADS = CEPH_OSD_OP_MODE_SUB \| 3,
	222	CEPH_OSD_OP_UNBALANCEREADS = CEPH_OSD_OP_MODE_SUB \| 4,
	223	CEPH_OSD_OP_SCRUB = CEPH_OSD_OP_MODE_SUB \| 5,
	224
	225	/ lock /
	226	CEPH_OSD_OP_WRLOCK = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_LOCK \| 1,
	227	CEPH_OSD_OP_WRUNLOCK = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_LOCK \| 2,
	228	CEPH_OSD_OP_RDLOCK = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_LOCK \| 3,
	229	CEPH_OSD_OP_RDUNLOCK = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_LOCK \| 4,
	230	CEPH_OSD_OP_UPLOCK = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_LOCK \| 5,
	231	CEPH_OSD_OP_DNLOCK = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_LOCK \| 6,
	232
	233	/ exec /
	234	CEPH_OSD_OP_CALL = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_EXEC \| 1,
235
236	/ pg /
237	CEPH_OSD_OP_PGLS = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_PG \| 1,
238	};
239
240	static inline int ceph_osd_op_type_lock(int op)
241	{
242	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_LOCK;
243	}
244	static inline int ceph_osd_op_type_data(int op)
245	{
246	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_DATA;
247	}
248	static inline int ceph_osd_op_type_attr(int op)
249	{
250	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_ATTR;
251	}
252	static inline int ceph_osd_op_type_exec(int op)
253	{
254	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_EXEC;
255	}
256	static inline int ceph_osd_op_type_pg(int op)
257	{
258	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_PG;
259	}
260
261	static inline int ceph_osd_op_mode_subop(int op)
262	{
263	return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_SUB;
264	}
265	static inline int ceph_osd_op_mode_read(int op)
266	{
267	return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_RD;
268	}
269	static inline int ceph_osd_op_mode_modify(int op)
270	{
271	return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_WR;
272	}
273
274	#define CEPH_OSD_TMAP_HDR 'h'
275	#define CEPH_OSD_TMAP_SET 's'
276	#define CEPH_OSD_TMAP_RM 'r'
277
278	extern const char *ceph_osd_op_name(int op);
279
280
281	/*
282	* osd op flags
283	*
284	* An op may be READ, WRITE, or READ\|WRITE.
285	*/
286	enum {
287	CEPH_OSD_FLAG_ACK = 1, /* want (or is) "ack" ack */
288	CEPH_OSD_FLAG_ONNVRAM = 2, /* want (or is) "onnvram" ack */
289	CEPH_OSD_FLAG_ONDISK = 4, /* want (or is) "ondisk" ack */
290	CEPH_OSD_FLAG_RETRY = 8, /* resend attempt */
291	CEPH_OSD_FLAG_READ = 16, /* op may read */
292	CEPH_OSD_FLAG_WRITE = 32, /* op may write */
293	CEPH_OSD_FLAG_ORDERSNAP = 64, /* EOLDSNAP if snapc is out of order */
294	CEPH_OSD_FLAG_PEERSTAT = 128, /* msg includes osd_peer_stat */
295	CEPH_OSD_FLAG_BALANCE_READS = 256,
296	CEPH_OSD_FLAG_PARALLELEXEC = 512, /* execute op in parallel */
297	CEPH_OSD_FLAG_PGOP = 1024, /* pg op, no object */
4e7a5dcd	298	CEPH_OSD_FLAG_EXEC = 2048, /* op may exec */
0dee3c28 SW	299	};
	300
	301	enum {
	302	CEPH_OSD_OP_FLAG_EXCL = 1, /* EXCL object create */
	303	};
	304
	305	#define EOLDSNAPC ERESTART /* ORDERSNAP flag set; writer has old snapc*/
	306	#define EBLACKLISTED ESHUTDOWN /* blacklisted */
	307
	308	/*
	309	* an individual object operation. each may be accompanied by some data
	310	* payload
	311	*/
	312	struct ceph_osd_op {
	313	__le16 op; /* CEPH_OSD_OP_* */
	314	__le32 flags; /* CEPH_OSD_FLAG_* */
	315	union {
	316	struct {
	317	__le64 offset, length;
0c948992 YS	318	__le64 truncate_size;
0c948992 YS	319	__le32 truncate_seq;
0dee3c28 SW	320	} __attribute__ ((packed)) extent;
	321	struct {
	322	__le32 name_len;
	323	__le32 value_len;
	324	} __attribute__ ((packed)) xattr;
0dee3c28 SW	325	struct {
	326	__u8 class_len;
	327	__u8 method_len;
	328	__u8 argc;
	329	__le32 indata_len;
	330	} __attribute__ ((packed)) cls;
	331	struct {
	332	__le64 cookie, count;
	333	} __attribute__ ((packed)) pgls;
	334	};
	335	__le32 payload_len;
	336	} __attribute__ ((packed));
	337
	338	/*
	339	* osd request message header. each request may include multiple
	340	* ceph_osd_op object operations.
	341	*/
	342	struct ceph_osd_request_head {
0dee3c28 SW	343	__le32 client_inc; /* client incarnation */
	344	struct ceph_object_layout layout; /* pgid */
	345	__le32 osdmap_epoch; /* client's osdmap epoch */
	346
	347	__le32 flags;
	348
	349	struct ceph_timespec mtime; /* for mutations only */
	350	struct ceph_eversion reassert_version; /* if we are replaying op */
	351
	352	__le32 object_len; /* length of object name */
	353
	354	__le64 snapid; /* snapid to read */
	355	__le64 snap_seq; /* writer's snap context */
	356	__le32 num_snaps;
	357
	358	__le16 num_ops;
	359	struct ceph_osd_op ops[]; /* followed by ops[], obj, ticket, snaps */
	360	} __attribute__ ((packed));
	361
	362	struct ceph_osd_reply_head {
0dee3c28 SW	363	__le32 client_inc; /* client incarnation */
	364	__le32 flags;
	365	struct ceph_object_layout layout;
	366	__le32 osdmap_epoch;
	367	struct ceph_eversion reassert_version; /* for replaying uncommitted */
	368
	369	__le32 result; /* result code */
	370
	371	__le32 object_len; /* length of object name */
	372	__le32 num_ops;
	373	struct ceph_osd_op ops[0]; /* ops[], object */
	374	} __attribute__ ((packed));
	375
	376
	377	#endif