+/*
+ * Copyright (c) 2002-2010 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
/*-
* Copyright (c) 1998 Berkeley Software Design, Inc. All rights reserved.
* Redistribution and use in source and binary forms, with or without
* If a structure changes, you must bump the version number.
*/
-#include <nfs/nfsproto.h>
+#include <sys/mount.h>
/*
- * The fifo where the kernel writes requests for locks on remote NFS files,
- * and where lockd reads these requests. Note this is no longer hardwired
- * in the kernel binary - lockd passes the file descriptor down via nfsclnt()
+ * The structure that the kernel hands lockd for each lock request.
*/
-#define _PATH_LCKFIFO "/var/run/nfslockd"
+#define LOCKD_MSG_VERSION 3
+typedef struct nfs_lock_msg {
+ int lm_version; /* LOCKD_MSG version */
+ int lm_flags; /* request flags */
+ u_int64_t lm_xid; /* unique message transaction ID */
+ struct flock lm_fl; /* The lock request. */
+ struct sockaddr_storage lm_addr; /* The address. */
+ int lm_fh_len; /* The file handle length. */
+ struct xucred lm_cred; /* user cred for lock req */
+ u_int8_t lm_fh[NFSV3_MAX_FH_SIZE]; /* The file handle. */
+} LOCKD_MSG;
+
+/* lm_flags */
+#define LOCKD_MSG_BLOCK 0x0001 /* a blocking request */
+#define LOCKD_MSG_TEST 0x0002 /* just a lock test */
+#define LOCKD_MSG_NFSV3 0x0004 /* NFSv3 request */
+#define LOCKD_MSG_CANCEL 0x0008 /* cancelling blocked request */
+#define LOCKD_MSG_DENIED_GRACE 0x0010 /* lock denied due to grace period */
+#define LOCKD_MSG_RECLAIM 0x0020 /* lock reclaim request */
+#define LOCKD_MSG_TCP 0x0040 /* (try to) use TCP for request */
+
+/* The structure used to maintain the pending request queue */
+typedef struct nfs_lock_msg_request {
+ TAILQ_ENTRY(nfs_lock_msg_request) lmr_next; /* in-kernel pending request list */
+ int lmr_answered; /* received an answer? */
+ int lmr_errno; /* return status */
+ int lmr_saved_errno; /* original return status */
+ LOCKD_MSG lmr_msg; /* the message */
+} LOCKD_MSG_REQUEST;
+
+TAILQ_HEAD(nfs_lock_msg_queue, nfs_lock_msg_request);
+typedef struct nfs_lock_msg_queue LOCKD_MSG_QUEUE;
+
/*
- * This structure is used to uniquely identify the process which originated
- * a particular message to lockd. A sequence number is used to differentiate
- * multiple messages from the same process. A process start time is used to
- * detect the unlikely, but possible, event of the recycling of a pid.
+ * The structure that lockd hands the kernel for each lock answer.
*/
-struct lockd_msg_ident {
- pid_t pid; /* The process ID. */
- struct timeval pid_start; /* Start time of process id */
- int msg_seq; /* Sequence number of message */
- struct uthread *ut;
+#define LOCKD_ANS_VERSION 2
+struct lockd_ans {
+ int la_version; /* lockd_ans version */
+ int la_errno; /* return status */
+ u_int64_t la_xid; /* unique message transaction ID */
+ int la_flags; /* answer flags */
+ pid_t la_pid; /* pid of lock requester/owner */
+ off_t la_start; /* lock starting offset */
+ off_t la_len; /* lock length */
+ int la_fh_len; /* The file handle length. */
+ u_int8_t la_fh[NFSV3_MAX_FH_SIZE];/* The file handle. */
};
-#define LOCKD_MSG_VERSION 2
+/* la_flags */
+#define LOCKD_ANS_GRANTED 0x0001 /* NLM_GRANTED request */
+#define LOCKD_ANS_LOCK_INFO 0x0002 /* lock info valid */
+#define LOCKD_ANS_LOCK_EXCL 0x0004 /* lock is exclusive */
+#define LOCKD_ANS_DENIED_GRACE 0x0008 /* lock denied due to grace period */
+
/*
- * The structure that the kernel hands us for each lock request.
+ * The structure that lockd hands the kernel for each notify.
*/
-typedef struct __lock_msg {
- int lm_version; /* which version is this */
- struct lockd_msg_ident lm_msg_ident; /* originator of the message */
- struct flock lm_fl; /* The lock request. */
- int lm_wait; /* The F_WAIT flag. */
- int lm_getlk; /* is this a F_GETLK request */
- struct sockaddr_storage lm_addr; /* The address. */
- int lm_nfsv3; /* If NFS version 3. */
- size_t lm_fh_len; /* The file handle length. */
- struct xucred lm_cred; /* user cred for lock req */
- u_int8_t lm_fh[NFS_SMALLFH];/* The file handle. */
-} LOCKD_MSG;
-
-#define LOCKD_ANS_VERSION 1
-
-struct lockd_ans {
- int la_vers;
- struct lockd_msg_ident la_msg_ident; /* originator of the message */
- int la_errno;
- int la_getlk_set; /* use returned getlk values */
- int la_getlk_pid; /* returned pid for F_GETLK */
- off_t la_getlk_start; /* returned starting offset */
- off_t la_getlk_len; /* returned length */
+#define LOCKD_NOTIFY_VERSION 1
+struct lockd_notify {
+ int ln_version; /* lockd_notify version */
+ int ln_flags; /* notify flags */
+ int ln_pad; /* (for alignment) */
+ int ln_addrcount; /* # of addresss */
+ struct sockaddr_storage ln_addr[1]; /* List of addresses. */
};
+
#ifdef KERNEL
-int nfs_dolock(struct vop_advlock_args *ap);
-int nfslockdans(struct proc *p, struct lockd_ans *ansp);
-int nfslockdfd(struct proc *p, int fd);
-int nfslockdwait(struct proc *p);
+void nfs_lockinit(void);
+void nfs_lockd_mount_register(struct nfsmount *);
+void nfs_lockd_mount_unregister(struct nfsmount *);
+int nfs3_lockd_request(nfsnode_t, int, LOCKD_MSG_REQUEST *, int, thread_t);
+int nfslockdans(proc_t p, struct lockd_ans *ansp);
+int nfslockdnotify(proc_t p, user_addr_t argp);
+
#endif
#endif /* __APPLE_API_PRIVATE */
projects / apple / xnu.git / blobdiff