Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

Pull ceph updates from Sage Weil:
 "The big item here is support for inline data for CephFS and for
  message signatures from Zheng.  There are also several bug fixes,
  including interrupted flock request handling, 0-length xattrs, mksnap,
  cached readdir results, and a message version compat field.  Finally
  there are several cleanups from Ilya, Dan, and Markus.

  Note that there is another series coming soon that fixes some bugs in
  the RBD 'lingering' requests, but it isn't quite ready yet"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (27 commits)
  ceph: fix setting empty extended attribute
  ceph: fix mksnap crash
  ceph: do_sync is never initialized
  libceph: fixup includes in pagelist.h
  ceph: support inline data feature
  ceph: flush inline version
  ceph: convert inline data to normal data before data write
  ceph: sync read inline data
  ceph: fetch inline data when getting Fcr cap refs
  ceph: use getattr request to fetch inline data
  ceph: add inline data to pagecache
  ceph: parse inline data in MClientReply and MClientCaps
  libceph: specify position of extent operation
  libceph: add CREATE osd operation support
  libceph: add SETXATTR/CMPXATTR osd operations support
  rbd: don't treat CEPH_OSD_OP_DELETE as extent op
  ceph: remove unused stringification macros
  libceph: require cephx message signature by default
  ceph: introduce global empty snap context
  ceph: message versioning fixes
  ...

9 files changed, 70 insertions, 9 deletions

diff --git a/include/linux/ceph/auth.h b/include/linux/ceph/auth.h
index 5f3386844134..260d78b587c4 100644
--- a/include/linux/ceph/auth.h
+++ b/include/linux/ceph/auth.h
@@ -13,6 +13,7 @@
 
 struct ceph_auth_client;
 struct ceph_authorizer;
+struct ceph_msg;
 
 struct ceph_auth_handshake {
 	struct ceph_authorizer *authorizer;
@@ -20,6 +21,10 @@ struct ceph_auth_handshake {
 	size_t authorizer_buf_len;
 	void *authorizer_reply_buf;
 	size_t authorizer_reply_buf_len;
+	int (*sign_message)(struct ceph_auth_handshake *auth,
+			    struct ceph_msg *msg);
+	int (*check_message_signature)(struct ceph_auth_handshake *auth,
+				       struct ceph_msg *msg);
 };
 
 struct ceph_auth_client_ops {
@@ -66,6 +71,11 @@ struct ceph_auth_client_ops {
 	void (*reset)(struct ceph_auth_client *ac);
 
 	void (*destroy)(struct ceph_auth_client *ac);
+
+	int (*sign_message)(struct ceph_auth_handshake *auth,
+			    struct ceph_msg *msg);
+	int (*check_message_signature)(struct ceph_auth_handshake *auth,
+				       struct ceph_msg *msg);
 };
 
 struct ceph_auth_client {
@@ -113,4 +123,20 @@ extern int ceph_auth_verify_authorizer_reply(struct ceph_auth_client *ac,
 extern void ceph_auth_invalidate_authorizer(struct ceph_auth_client *ac,
 					    int peer_type);
 
+static inline int ceph_auth_sign_message(struct ceph_auth_handshake *auth,
+					 struct ceph_msg *msg)
+{
+	if (auth->sign_message)
+		return auth->sign_message(auth, msg);
+	return 0;
+}
+
+static inline
+int ceph_auth_check_message_signature(struct ceph_auth_handshake *auth,
+				      struct ceph_msg *msg)
+{
+	if (auth->check_message_signature)
+		return auth->check_message_signature(auth, msg);
+	return 0;
+}
 #endif
diff --git a/include/linux/ceph/buffer.h b/include/linux/ceph/buffer.h
index 07ad423cc37f..07ca15e76100 100644
--- a/include/linux/ceph/buffer.h
+++ b/include/linux/ceph/buffer.h
@@ -10,8 +10,7 @@
 /*
  * a simple reference counted buffer.
  *
- * use kmalloc for small sizes (<= one page), vmalloc for larger
- * sizes.
+ * use kmalloc for smaller sizes, vmalloc for larger sizes.
  */
 struct ceph_buffer {
 	struct kref kref;
diff --git a/include/linux/ceph/ceph_features.h b/include/linux/ceph/ceph_features.h
index d12659ce550d..71e05bbf8ceb 100644
--- a/include/linux/ceph/ceph_features.h
+++ b/include/linux/ceph/ceph_features.h
@@ -84,6 +84,7 @@ static inline u64 ceph_sanitize_features(u64 features)
 	 CEPH_FEATURE_PGPOOL3 |			\
 	 CEPH_FEATURE_OSDENC |			\
 	 CEPH_FEATURE_CRUSH_TUNABLES |		\
+	 CEPH_FEATURE_MSG_AUTH |		\
 	 CEPH_FEATURE_CRUSH_TUNABLES2 |		\
 	 CEPH_FEATURE_REPLY_CREATE_INODE |	\
 	 CEPH_FEATURE_OSDHASHPSPOOL |		\
diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h
index 3c97d5e9b951..c0dadaac26e3 100644
--- a/include/linux/ceph/ceph_fs.h
+++ b/include/linux/ceph/ceph_fs.h
@@ -522,8 +522,11 @@ struct ceph_mds_reply_dirfrag {
 	__le32 dist[];
 } __attribute__ ((packed));
 
-#define CEPH_LOCK_FCNTL    1
-#define CEPH_LOCK_FLOCK    2
+#define CEPH_LOCK_FCNTL		1
+#define CEPH_LOCK_FLOCK		2
+#define CEPH_LOCK_FCNTL_INTR    3
+#define CEPH_LOCK_FLOCK_INTR    4
+
 
 #define CEPH_LOCK_SHARED   1
 #define CEPH_LOCK_EXCL     2
@@ -549,6 +552,7 @@ struct ceph_filelock {
 
 int ceph_flags_to_mode(int flags);
 
+#define CEPH_INLINE_NONE	((__u64)-1)
 
 /* capability bits */
 #define CEPH_CAP_PIN         1  /* no specific capabilities beyond the pin */
@@ -613,6 +617,8 @@ int ceph_flags_to_mode(int flags);
 				 CEPH_CAP_LINK_SHARED |	\
 				 CEPH_CAP_FILE_SHARED |	\
 				 CEPH_CAP_XATTR_SHARED)
+#define CEPH_STAT_CAP_INLINE_DATA (CEPH_CAP_FILE_SHARED | \
+				   CEPH_CAP_FILE_RD)
 
 #define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED |			\
 			      CEPH_CAP_LINK_SHARED |			\
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index 07bc359b88ac..8b11a79ca1cb 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -29,6 +29,7 @@
 #define CEPH_OPT_NOSHARE          (1<<1) /* don't share client with other sbs */
 #define CEPH_OPT_MYIP             (1<<2) /* specified my ip */
 #define CEPH_OPT_NOCRC            (1<<3) /* no data crc on writes */
+#define CEPH_OPT_NOMSGAUTH	  (1<<4) /* not require cephx message signature */
 
 #define CEPH_OPT_DEFAULT   (0)
 
@@ -184,7 +185,6 @@ extern bool libceph_compatible(void *data);
 extern const char *ceph_msg_type_name(int type);
 extern int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid);
 extern void *ceph_kvmalloc(size_t size, gfp_t flags);
-extern void ceph_kvfree(const void *ptr);
 
 extern struct ceph_options *ceph_parse_options(char *options,
 			      const char *dev_name, const char *dev_name_end,
diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h
index 40ae58e3e9db..d9d396c16503 100644
--- a/include/linux/ceph/messenger.h
+++ b/include/linux/ceph/messenger.h
@@ -42,6 +42,10 @@ struct ceph_connection_operations {
 	struct ceph_msg * (*alloc_msg) (struct ceph_connection *con,
 					struct ceph_msg_header *hdr,
 					int *skip);
+	int (*sign_message) (struct ceph_connection *con, struct ceph_msg *msg);
+
+	int (*check_message_signature) (struct ceph_connection *con,
+					struct ceph_msg *msg);
 };
 
 /* use format string %s%d */
@@ -142,7 +146,10 @@ struct ceph_msg_data_cursor {
  */
 struct ceph_msg {
 	struct ceph_msg_header hdr;	/* header */
-	struct ceph_msg_footer footer;	/* footer */
+	union {
+		struct ceph_msg_footer footer;		/* footer */
+		struct ceph_msg_footer_old old_footer;	/* old format footer */
+	};
 	struct kvec front;              /* unaligned blobs of message */
 	struct ceph_buffer *middle;
 
diff --git a/include/linux/ceph/msgr.h b/include/linux/ceph/msgr.h
index 3d94a73b5f30..1c1887206ffa 100644
--- a/include/linux/ceph/msgr.h
+++ b/include/linux/ceph/msgr.h
@@ -152,7 +152,8 @@ struct ceph_msg_header {
 			     receiver: mask against ~PAGE_MASK */
 
 	struct ceph_entity_name src;
-	__le32 reserved;
+	__le16 compat_version;
+	__le16 reserved;
 	__le32 crc;       /* header crc32c */
 } __attribute__ ((packed));
 
@@ -164,13 +165,21 @@ struct ceph_msg_header {
 /*
  * follows data payload
  */
+struct ceph_msg_footer_old {
+	__le32 front_crc, middle_crc, data_crc;
+	__u8 flags;
+} __attribute__ ((packed));
+
 struct ceph_msg_footer {
 	__le32 front_crc, middle_crc, data_crc;
+	// sig holds the 64 bits of the digital signature for the message PLR
+	__le64  sig;
 	__u8 flags;
 } __attribute__ ((packed));
 
 #define CEPH_MSG_FOOTER_COMPLETE  (1<<0)   /* msg wasn't aborted */
 #define CEPH_MSG_FOOTER_NOCRC     (1<<1)   /* no data crc */
+#define CEPH_MSG_FOOTER_SIGNED	  (1<<2)   /* msg was signed */
 
 
 #endif
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index 03aeb27fcc69..5d86416d35f2 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -87,6 +87,13 @@ struct ceph_osd_req_op {
 			struct ceph_osd_data osd_data;
 		} extent;
 		struct {
+			__le32 name_len;
+			__le32 value_len;
+			__u8 cmp_op;       /* CEPH_OSD_CMPXATTR_OP_* */
+			__u8 cmp_mode;     /* CEPH_OSD_CMPXATTR_MODE_* */
+			struct ceph_osd_data osd_data;
+		} xattr;
+		struct {
 			const char *class_name;
 			const char *method_name;
 			struct ceph_osd_data request_info;
@@ -295,6 +302,9 @@ extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *,
 extern void osd_req_op_cls_init(struct ceph_osd_request *osd_req,
 					unsigned int which, u16 opcode,
 					const char *class, const char *method);
+extern int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which,
+				 u16 opcode, const char *name, const void *value,
+				 size_t size, u8 cmp_op, u8 cmp_mode);
 extern void osd_req_op_watch_init(struct ceph_osd_request *osd_req,
 					unsigned int which, u16 opcode,
 					u64 cookie, u64 version, int flag);
@@ -318,7 +328,8 @@ extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *,
 				      struct ceph_file_layout *layout,
 				      struct ceph_vino vino,
 				      u64 offset, u64 *len,
-				      int num_ops, int opcode, int flags,
+				      unsigned int which, int num_ops,
+				      int opcode, int flags,
 				      struct ceph_snap_context *snapc,
 				      u32 truncate_seq, u64 truncate_size,
 				      bool use_mempool);
diff --git a/include/linux/ceph/pagelist.h b/include/linux/ceph/pagelist.h
index 5f871d84ddce..13d71fe18b0c 100644
--- a/include/linux/ceph/pagelist.h
+++ b/include/linux/ceph/pagelist.h
@@ -1,8 +1,10 @@
 #ifndef __FS_CEPH_PAGELIST_H
 #define __FS_CEPH_PAGELIST_H
 
-#include <linux/list.h>
+#include <asm/byteorder.h>
 #include <linux/atomic.h>
+#include <linux/list.h>
+#include <linux/types.h>
 
 struct ceph_pagelist {
 	struct list_head head;