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krpc.h
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nfs_common.h
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nfs_kdtrace.h
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nfs_lock.h
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nfs_mountcommon.h
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nfsdiskless.h
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nfsproto.h
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nfssvc.h
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xdr_subs.h
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Editing: nfs_lock.h
/*- * SPDX-License-Identifier: BSD-3-Clause * * Copyright (c) 1998 Berkeley Software Design, Inc. All rights reserved. * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Berkeley Software Design Inc's name may not be used to endorse or * promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN INC ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL BERKELEY SOFTWARE DESIGN INC BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from nfs_lock.h,v 2.2 1998/04/28 19:38:41 don Exp * $FreeBSD$ */ /* * lockd uses the nfssvc system call to get the unique kernel services it needs. * It passes in a request structure with a version number at the start. * This prevents libc from needing to change if the information passed * between lockd and the kernel needs to change. * * If a structure changes, you must bump the version number. */ /* * The fifo where the kernel writes requests for locks on remote NFS files, * and where lockd reads these requests. * */ #define _PATH_NFSLCKDEV "nfslock" /* * 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. */ 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 */ }; #define LOCKD_MSG_VERSION 3 /* * The structure that the kernel hands us for each lock request. */ typedef struct __lock_msg { TAILQ_ENTRY(__lock_msg) lm_link; /* internal linkage */ 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[NFSX_V3FHMAX];/* 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_set_getlk_pid; /* use returned pid */ int la_getlk_pid; /* returned pid for F_GETLK */ }; #ifdef _KERNEL int nfs_dolock(struct vop_advlock_args *ap); extern vop_advlock_t *nfs_advlock_p; extern vop_reclaim_t *nfs_reclaim_p; #endif
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