1 files changed, 374 insertions, 0 deletions
diff --git a/fs/ceph/rados.h b/fs/ceph/rados.h
new file mode 100644
index 000000000000..26ac8b89a676
--- /dev/null
+++ b/fs/ceph/rados.h
@@ -0,0 +1,374 @@
+#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 4
+#define CEPH_OSDMAP_VERSION     4
+/*
+ * 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
+/*
+ * 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

diff --git a/fs/ceph/rados.h b/fs/ceph/rados.h new file mode 100644 index 000000000000..26ac8b89a676 --- /dev/null +++ b/fs/ceph/rados.h
@@ -0,0 +1,374 @@
	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
	11	/*
	12	* osdmap encoding versions
	13	*/
	14	#define CEPH_OSDMAP_INC_VERSION 4
	15	#define CEPH_OSDMAP_VERSION 4
	16
	17	/*
	18	* fs id
	19	*/
	20	struct ceph_fsid {
	21	unsigned char fsid[16];
	22	};
	23
	24	static inline int ceph_fsid_compare(const struct ceph_fsid *a,
	25	const struct ceph_fsid *b)
	26	{
	27	return memcmp(a, b, sizeof(*a));
	28	}
	29
	30	/*
	31	* ino, object, etc.
	32	*/
	33	typedef __le64 ceph_snapid_t;
	34	#define CEPH_SNAPDIR ((__u64)(-1)) /* reserved for hidden .snap dir */
	35	#define CEPH_NOSNAP ((__u64)(-2)) /* "head", "live" revision */
	36	#define CEPH_MAXSNAP ((__u64)(-3)) /* largest valid snapid */
	37
	38	struct ceph_timespec {
	39	__le32 tv_sec;
	40	__le32 tv_nsec;
	41	} __attribute__ ((packed));
	42
	43
	44	/*
	45	* object layout - how objects are mapped into PGs
	46	*/
	47	#define CEPH_OBJECT_LAYOUT_HASH 1
	48	#define CEPH_OBJECT_LAYOUT_LINEAR 2
	49	#define CEPH_OBJECT_LAYOUT_HASHINO 3
	50
	51	/*
	52	* pg layout -- how PGs are mapped onto (sets of) OSDs
	53	*/
	54	#define CEPH_PG_LAYOUT_CRUSH 0
	55	#define CEPH_PG_LAYOUT_HASH 1
	56	#define CEPH_PG_LAYOUT_LINEAR 2
	57	#define CEPH_PG_LAYOUT_HYBRID 3
	58
	59
	60	/*
	61	* placement group.
	62	* we encode this into one __le64.
	63	*/
	64	struct ceph_pg {
	65	__le16 preferred; /* preferred primary osd */
	66	__le16 ps; /* placement seed */
	67	__le32 pool; /* object pool */
	68	} __attribute__ ((packed));
	69
	70	/*
	71	* pg_pool is a set of pgs storing a pool of objects
	72	*
	73	* pg_num -- base number of pseudorandomly placed pgs
	74	*
	75	* pgp_num -- effective number when calculating pg placement. this
	76	* is used for pg_num increases. new pgs result in data being "split"
	77	* into new pgs. for this to proceed smoothly, new pgs are intiially
	78	* colocated with their parents; that is, pgp_num doesn't increase
	79	* until the new pgs have successfully split. only _then_ are the new
	80	* pgs placed independently.
	81	*
	82	* lpg_num -- localized pg count (per device). replicas are randomly
	83	* selected.
	84	*
	85	* lpgp_num -- as above.
	86	*/
	87	#define CEPH_PG_TYPE_REP 1
	88	#define CEPH_PG_TYPE_RAID4 2
	89	#define CEPH_PG_POOL_VERSION 2
	90	struct ceph_pg_pool {
	91	__u8 type; /* CEPH_PG_TYPE_* */
	92	__u8 size; /* number of osds in each pg */
	93	__u8 crush_ruleset; /* crush placement rule */
	94	__u8 object_hash; /* hash mapping object name to ps */
	95	__le32 pg_num, pgp_num; /* number of pg's */
	96	__le32 lpg_num, lpgp_num; /* number of localized pg's */
	97	__le32 last_change; /* most recent epoch changed */
	98	__le64 snap_seq; /* seq for per-pool snapshot */
	99	__le32 snap_epoch; /* epoch of last snap */
	100	__le32 num_snaps;
	101	__le32 num_removed_snap_intervals;
	102	__le64 uid;
	103	} __attribute__ ((packed));
	104
	105	/*
	106	* stable_mod func is used to control number of placement groups.
	107	* similar to straight-up modulo, but produces a stable mapping as b
	108	* increases over time. b is the number of bins, and bmask is the
	109	* containing power of 2 minus 1.
	110	*
	111	* b <= bmask and bmask=(2**n)-1
	112	* e.g., b=12 -> bmask=15, b=123 -> bmask=127
	113	*/
	114	static inline int ceph_stable_mod(int x, int b, int bmask)
	115	{
	116	if ((x & bmask) < b)
	117	return x & bmask;
	118	else
	119	return x & (bmask >> 1);
	120	}
	121
	122	/*
	123	* object layout - how a given object should be stored.
	124	*/
	125	struct ceph_object_layout {
	126	struct ceph_pg ol_pgid; /* raw pg, with _full_ ps precision. */
	127	__le32 ol_stripe_unit; /* for per-object parity, if any */
	128	} __attribute__ ((packed));
	129
	130	/*
	131	* compound epoch+version, used by storage layer to serialize mutations
	132	*/
	133	struct ceph_eversion {
	134	__le32 epoch;
	135	__le64 version;
	136	} __attribute__ ((packed));
	137
	138	/*
	139	* osd map bits
	140	*/
	141
	142	/* status bits */
	143	#define CEPH_OSD_EXISTS 1
	144	#define CEPH_OSD_UP 2
	145
	146	/* osd weights. fixed point value: 0x10000 == 1.0 ("in"), 0 == "out" */
	147	#define CEPH_OSD_IN 0x10000
	148	#define CEPH_OSD_OUT 0
	149
	150
	151	/*
	152	* osd map flag bits
	153	*/
	154	#define CEPH_OSDMAP_NEARFULL (1<<0) /* sync writes (near ENOSPC) */
	155	#define CEPH_OSDMAP_FULL (1<<1) /* no data writes (ENOSPC) */
	156	#define CEPH_OSDMAP_PAUSERD (1<<2) /* pause all reads */
	157	#define CEPH_OSDMAP_PAUSEWR (1<<3) /* pause all writes */
	158	#define CEPH_OSDMAP_PAUSEREC (1<<4) /* pause recovery */
	159
	160	/*
	161	* osd ops
	162	*/
	163	#define CEPH_OSD_OP_MODE 0xf000
	164	#define CEPH_OSD_OP_MODE_RD 0x1000
	165	#define CEPH_OSD_OP_MODE_WR 0x2000
	166	#define CEPH_OSD_OP_MODE_RMW 0x3000
	167	#define CEPH_OSD_OP_MODE_SUB 0x4000
	168
	169	#define CEPH_OSD_OP_TYPE 0x0f00
	170	#define CEPH_OSD_OP_TYPE_LOCK 0x0100
	171	#define CEPH_OSD_OP_TYPE_DATA 0x0200
	172	#define CEPH_OSD_OP_TYPE_ATTR 0x0300
	173	#define CEPH_OSD_OP_TYPE_EXEC 0x0400
	174	#define CEPH_OSD_OP_TYPE_PG 0x0500
	175
	176	enum {
	177	/ data /
	178	/* read */
	179	CEPH_OSD_OP_READ = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_DATA \| 1,
	180	CEPH_OSD_OP_STAT = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_DATA \| 2,
	181
	182	/* fancy read */
	183	CEPH_OSD_OP_MASKTRUNC = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_DATA \| 4,
	184
	185	/* write */
	186	CEPH_OSD_OP_WRITE = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 1,
	187	CEPH_OSD_OP_WRITEFULL = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 2,
	188	CEPH_OSD_OP_TRUNCATE = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 3,
	189	CEPH_OSD_OP_ZERO = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 4,
	190	CEPH_OSD_OP_DELETE = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 5,
	191
	192	/* fancy write */
	193	CEPH_OSD_OP_APPEND = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 6,
	194	CEPH_OSD_OP_STARTSYNC = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 7,
	195	CEPH_OSD_OP_SETTRUNC = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 8,
	196	CEPH_OSD_OP_TRIMTRUNC = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 9,
	197
	198	CEPH_OSD_OP_TMAPUP = CEPH_OSD_OP_MODE_RMW \| CEPH_OSD_OP_TYPE_DATA \| 10,
	199	CEPH_OSD_OP_TMAPPUT = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 11,
	200	CEPH_OSD_OP_TMAPGET = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_DATA \| 12,
	201
	202	CEPH_OSD_OP_CREATE = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_DATA \| 13,
	203
	204	/ attrs /
	205	/* read */
	206	CEPH_OSD_OP_GETXATTR = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_ATTR \| 1,
	207	CEPH_OSD_OP_GETXATTRS = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_ATTR \| 2,
	208
	209	/* write */
	210	CEPH_OSD_OP_SETXATTR = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_ATTR \| 1,
	211	CEPH_OSD_OP_SETXATTRS = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_ATTR \| 2,
	212	CEPH_OSD_OP_RESETXATTRS = CEPH_OSD_OP_MODE_WR\|CEPH_OSD_OP_TYPE_ATTR \| 3,
	213	CEPH_OSD_OP_RMXATTR = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_ATTR \| 4,
	214
	215	/ subop /
	216	CEPH_OSD_OP_PULL = CEPH_OSD_OP_MODE_SUB \| 1,
	217	CEPH_OSD_OP_PUSH = CEPH_OSD_OP_MODE_SUB \| 2,
	218	CEPH_OSD_OP_BALANCEREADS = CEPH_OSD_OP_MODE_SUB \| 3,
	219	CEPH_OSD_OP_UNBALANCEREADS = CEPH_OSD_OP_MODE_SUB \| 4,
	220	CEPH_OSD_OP_SCRUB = CEPH_OSD_OP_MODE_SUB \| 5,
	221
	222	/ lock /
	223	CEPH_OSD_OP_WRLOCK = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_LOCK \| 1,
	224	CEPH_OSD_OP_WRUNLOCK = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_LOCK \| 2,
	225	CEPH_OSD_OP_RDLOCK = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_LOCK \| 3,
	226	CEPH_OSD_OP_RDUNLOCK = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_LOCK \| 4,
	227	CEPH_OSD_OP_UPLOCK = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_LOCK \| 5,
	228	CEPH_OSD_OP_DNLOCK = CEPH_OSD_OP_MODE_WR \| CEPH_OSD_OP_TYPE_LOCK \| 6,
	229
	230	/ exec /
	231	CEPH_OSD_OP_CALL = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_EXEC \| 1,
	232
	233	/ pg /
	234	CEPH_OSD_OP_PGLS = CEPH_OSD_OP_MODE_RD \| CEPH_OSD_OP_TYPE_PG \| 1,
	235	};
	236
	237	static inline int ceph_osd_op_type_lock(int op)
	238	{
	239	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_LOCK;
	240	}
	241	static inline int ceph_osd_op_type_data(int op)
	242	{
	243	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_DATA;
	244	}
	245	static inline int ceph_osd_op_type_attr(int op)
	246	{
	247	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_ATTR;
	248	}
	249	static inline int ceph_osd_op_type_exec(int op)
	250	{
	251	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_EXEC;
	252	}
	253	static inline int ceph_osd_op_type_pg(int op)
	254	{
	255	return (op & CEPH_OSD_OP_TYPE) == CEPH_OSD_OP_TYPE_PG;
	256	}
	257
	258	static inline int ceph_osd_op_mode_subop(int op)
	259	{
	260	return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_SUB;
	261	}
	262	static inline int ceph_osd_op_mode_read(int op)
	263	{
	264	return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_RD;
	265	}
	266	static inline int ceph_osd_op_mode_modify(int op)
	267	{
	268	return (op & CEPH_OSD_OP_MODE) == CEPH_OSD_OP_MODE_WR;
	269	}
	270
	271	#define CEPH_OSD_TMAP_HDR 'h'
	272	#define CEPH_OSD_TMAP_SET 's'
	273	#define CEPH_OSD_TMAP_RM 'r'
	274
	275	extern const char *ceph_osd_op_name(int op);
	276
	277
	278	/*
	279	* osd op flags
	280	*
	281	* An op may be READ, WRITE, or READ\|WRITE.
	282	*/
	283	enum {
	284	CEPH_OSD_FLAG_ACK = 1, /* want (or is) "ack" ack */
	285	CEPH_OSD_FLAG_ONNVRAM = 2, /* want (or is) "onnvram" ack */
	286	CEPH_OSD_FLAG_ONDISK = 4, /* want (or is) "ondisk" ack */
	287	CEPH_OSD_FLAG_RETRY = 8, /* resend attempt */
	288	CEPH_OSD_FLAG_READ = 16, /* op may read */
	289	CEPH_OSD_FLAG_WRITE = 32, /* op may write */
	290	CEPH_OSD_FLAG_ORDERSNAP = 64, /* EOLDSNAP if snapc is out of order */
	291	CEPH_OSD_FLAG_PEERSTAT = 128, /* msg includes osd_peer_stat */
	292	CEPH_OSD_FLAG_BALANCE_READS = 256,
	293	CEPH_OSD_FLAG_PARALLELEXEC = 512, /* execute op in parallel */
	294	CEPH_OSD_FLAG_PGOP = 1024, /* pg op, no object */
	295	CEPH_OSD_FLAG_EXEC = 2048, /* op may exec */
	296	};
	297
	298	enum {
	299	CEPH_OSD_OP_FLAG_EXCL = 1, /* EXCL object create */
	300	};
	301
	302	#define EOLDSNAPC ERESTART /* ORDERSNAP flag set; writer has old snapc*/
	303	#define EBLACKLISTED ESHUTDOWN /* blacklisted */
	304
	305	/*
	306	* an individual object operation. each may be accompanied by some data
	307	* payload
	308	*/
	309	struct ceph_osd_op {
	310	__le16 op; /* CEPH_OSD_OP_* */
	311	__le32 flags; /* CEPH_OSD_FLAG_* */
	312	union {
	313	struct {
	314	__le64 offset, length;
	315	__le64 truncate_size;
	316	__le32 truncate_seq;
	317	} __attribute__ ((packed)) extent;
	318	struct {
	319	__le32 name_len;
	320	__le32 value_len;
	321	} __attribute__ ((packed)) xattr;
	322	struct {
	323	__u8 class_len;
	324	__u8 method_len;
	325	__u8 argc;
	326	__le32 indata_len;
	327	} __attribute__ ((packed)) cls;
	328	struct {
	329	__le64 cookie, count;
	330	} __attribute__ ((packed)) pgls;
	331	};
	332	__le32 payload_len;
	333	} __attribute__ ((packed));
	334
	335	/*
	336	* osd request message header. each request may include multiple
	337	* ceph_osd_op object operations.
	338	*/
	339	struct ceph_osd_request_head {
	340	__le32 client_inc; /* client incarnation */
	341	struct ceph_object_layout layout; /* pgid */
	342	__le32 osdmap_epoch; /* client's osdmap epoch */
	343
	344	__le32 flags;
	345
	346	struct ceph_timespec mtime; /* for mutations only */
	347	struct ceph_eversion reassert_version; /* if we are replaying op */
	348
	349	__le32 object_len; /* length of object name */
	350
	351	__le64 snapid; /* snapid to read */
	352	__le64 snap_seq; /* writer's snap context */
	353	__le32 num_snaps;
	354
	355	__le16 num_ops;
	356	struct ceph_osd_op ops[]; /* followed by ops[], obj, ticket, snaps */
	357	} __attribute__ ((packed));
	358
	359	struct ceph_osd_reply_head {
	360	__le32 client_inc; /* client incarnation */
	361	__le32 flags;
	362	struct ceph_object_layout layout;
	363	__le32 osdmap_epoch;
	364	struct ceph_eversion reassert_version; /* for replaying uncommitted */
	365
	366	__le32 result; /* result code */
	367
	368	__le32 object_len; /* length of object name */
	369	__le32 num_ops;
	370	struct ceph_osd_op ops[0]; /* ops[], object */
	371	} __attribute__ ((packed));
	372
	373
	374	#endif