xnu-1699.22.81.tar.gz

[apple/xnu.git] / bsd / nfs / nfs_lock.h

diff --git a/bsd/nfs/nfs_lock.h b/bsd/nfs/nfs_lock.h
index cc99a1fa8088816c778a7c16ebafd32aa554f308..5a5efe3e4c04f48d43c2670e15b4c273e964946c 100644 (file)
--- a/bsd/nfs/nfs_lock.h
+++ b/bsd/nfs/nfs_lock.h
@@ -1,3 +1,30 @@
+/*
+ * 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
@@ -41,14 +68,7 @@
  * If a structure changes, you must bump the version number.
  */
 
-#include <nfs/nfsproto.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()
- */
-#define        _PATH_LCKFIFO   "/var/run/nfslockd"
+#include <sys/mount.h>
 
 /*
  * The structure that the kernel hands lockd for each lock request.
@@ -60,9 +80,9 @@ typedef struct nfs_lock_msg {
        u_int64_t               lm_xid;                 /* unique message transaction ID */
        struct flock            lm_fl;                  /* The lock request. */
        struct sockaddr_storage lm_addr;                /* The address. */
-       size_t                  lm_fh_len;              /* The file handle length. */
+       int                     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. */
+       u_int8_t                lm_fh[NFSV3_MAX_FH_SIZE]; /* The file handle. */
 } LOCKD_MSG;
 
 /* lm_flags */
@@ -70,6 +90,9 @@ typedef struct nfs_lock_msg {
 #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 {
@@ -96,21 +119,37 @@ struct lockd_ans {
        pid_t           la_pid;                 /* pid of lock requester/owner */
        off_t           la_start;               /* lock starting offset */
        off_t           la_len;                 /* lock length */
-       size_t          la_fh_len;              /* The file handle length. */
-       u_int8_t        la_fh[NFS_SMALLFH];     /* The file handle. */
+       int             la_fh_len;              /* The file handle length. */
+       u_int8_t        la_fh[NFSV3_MAX_FH_SIZE];/* The file handle. */
 };
 
 /* 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 lockd hands the kernel for each notify.
+ */
+#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
 void   nfs_lockinit(void);
-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_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 */