forked from mirrors/linux
5970e15dbc
The file locking definitions have lived in fs.h since the dawn of time, but they are only used by a small subset of the source files that include it. Move the file locking definitions to a new header file, and add the appropriate #include directives to the source files that need them. By doing this we trim down fs.h a bit and limit the amount of rebuilding that has to be done when we make changes to the file locking APIs. Reviewed-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Christian Brauner (Microsoft) <brauner@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: David Howells <dhowells@redhat.com> Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Acked-by: Chuck Lever <chuck.lever@oracle.com> Acked-by: Joseph Qi <joseph.qi@linux.alibaba.com> Acked-by: Steve French <stfrench@microsoft.com> Acked-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Jeff Layton <jlayton@kernel.org>
117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* linux/include/linux/lockd/xdr.h
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*
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* XDR types for the NLM protocol
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*
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* Copyright (C) 1996 Olaf Kirch <okir@monad.swb.de>
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*/
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#ifndef LOCKD_XDR_H
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#define LOCKD_XDR_H
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#include <linux/fs.h>
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#include <linux/filelock.h>
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#include <linux/nfs.h>
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#include <linux/sunrpc/xdr.h>
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#define SM_MAXSTRLEN 1024
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#define SM_PRIV_SIZE 16
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struct nsm_private {
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unsigned char data[SM_PRIV_SIZE];
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};
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struct svc_rqst;
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#define NLM_MAXCOOKIELEN 32
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#define NLM_MAXSTRLEN 1024
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#define nlm_granted cpu_to_be32(NLM_LCK_GRANTED)
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#define nlm_lck_denied cpu_to_be32(NLM_LCK_DENIED)
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#define nlm_lck_denied_nolocks cpu_to_be32(NLM_LCK_DENIED_NOLOCKS)
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#define nlm_lck_blocked cpu_to_be32(NLM_LCK_BLOCKED)
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#define nlm_lck_denied_grace_period cpu_to_be32(NLM_LCK_DENIED_GRACE_PERIOD)
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#define nlm_drop_reply cpu_to_be32(30000)
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/* Lock info passed via NLM */
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struct nlm_lock {
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char * caller;
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unsigned int len; /* length of "caller" */
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struct nfs_fh fh;
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struct xdr_netobj oh;
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u32 svid;
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u64 lock_start;
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u64 lock_len;
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struct file_lock fl;
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};
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/*
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* NLM cookies. Technically they can be 1K, but Linux only uses 8 bytes.
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* FreeBSD uses 16, Apple Mac OS X 10.3 uses 20. Therefore we set it to
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* 32 bytes.
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*/
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struct nlm_cookie
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{
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unsigned char data[NLM_MAXCOOKIELEN];
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unsigned int len;
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};
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/*
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* Generic lockd arguments for all but sm_notify
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*/
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struct nlm_args {
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struct nlm_cookie cookie;
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struct nlm_lock lock;
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u32 block;
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u32 reclaim;
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u32 state;
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u32 monitor;
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u32 fsm_access;
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u32 fsm_mode;
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};
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typedef struct nlm_args nlm_args;
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/*
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* Generic lockd result
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*/
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struct nlm_res {
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struct nlm_cookie cookie;
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__be32 status;
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struct nlm_lock lock;
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};
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/*
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* statd callback when client has rebooted
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*/
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struct nlm_reboot {
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char *mon;
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unsigned int len;
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u32 state;
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struct nsm_private priv;
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};
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/*
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* Contents of statd callback when monitored host rebooted
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*/
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#define NLMSVC_XDRSIZE sizeof(struct nlm_args)
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bool nlmsvc_decode_void(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nlmsvc_decode_testargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nlmsvc_decode_lockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nlmsvc_decode_cancargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nlmsvc_decode_unlockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nlmsvc_decode_res(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nlmsvc_decode_reboot(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nlmsvc_decode_shareargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nlmsvc_decode_notify(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nlmsvc_encode_testres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nlmsvc_encode_res(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nlmsvc_encode_void(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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bool nlmsvc_encode_shareres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
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#endif /* LOCKD_XDR_H */
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