FM / lockd

/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/linux/lockd/

/usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/linux/lockd

Name	Size	Mode	Actions
bind.h	2209	0644	edit dl rm
debug.h	871	0644	edit dl rm
lockd.h	11799	0644	edit dl rm
nlm.h	1354	0644	edit dl rm
share.h	878	0644	edit dl rm
xdr.h	2926	0644	edit dl rm
xdr4.h	1649	0644	edit dl rm

Edit: /usr/src/kernels/4.18.0-553.121.1.el8_10.x86_64/include/linux/lockd/xdr.h (2926B)

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * linux/include/linux/lockd/xdr.h
 *
 * XDR types for the NLM protocol
 *
 * Copyright (C) 1996 Olaf Kirch <okir@monad.swb.de>
 */

#ifndef LOCKD_XDR_H
#define LOCKD_XDR_H

#include <linux/fs.h>
#include <linux/nfs.h>
#include <linux/sunrpc/xdr.h>

#define SM_MAXSTRLEN		1024
#define SM_PRIV_SIZE		16

struct nsm_private {
	unsigned char		data[SM_PRIV_SIZE];
};

struct svc_rqst;

#define NLM_MAXCOOKIELEN    	32
#define NLM_MAXSTRLEN		1024

#define	nlm_granted		cpu_to_be32(NLM_LCK_GRANTED)
#define	nlm_lck_denied		cpu_to_be32(NLM_LCK_DENIED)
#define	nlm_lck_denied_nolocks	cpu_to_be32(NLM_LCK_DENIED_NOLOCKS)
#define	nlm_lck_blocked		cpu_to_be32(NLM_LCK_BLOCKED)
#define	nlm_lck_denied_grace_period	cpu_to_be32(NLM_LCK_DENIED_GRACE_PERIOD)

#define nlm_drop_reply		cpu_to_be32(30000)

/* Lock info passed via NLM */
struct nlm_lock {
	char *			caller;
	unsigned int		len; 	/* length of "caller" */
	struct nfs_fh		fh;
	struct xdr_netobj	oh;
	u32			svid;
	struct file_lock	fl;
};

/*
 *	NLM cookies. Technically they can be 1K, but Linux only uses 8 bytes.
 *	FreeBSD uses 16, Apple Mac OS X 10.3 uses 20. Therefore we set it to
 *	32 bytes.
 */
 
struct nlm_cookie
{
	unsigned char data[NLM_MAXCOOKIELEN];
	unsigned int len;
};

/*
 * Generic lockd arguments for all but sm_notify
 */
struct nlm_args {
	struct nlm_cookie	cookie;
	struct nlm_lock		lock;
	u32			block;
	u32			reclaim;
	u32			state;
	u32			monitor;
	u32			fsm_access;
	u32			fsm_mode;
};

typedef struct nlm_args nlm_args;

/*
 * Generic lockd result
 */
struct nlm_res {
	struct nlm_cookie	cookie;
	__be32			status;
	struct nlm_lock		lock;
};

/*
 * statd callback when client has rebooted
 */
struct nlm_reboot {
	char			*mon;
	unsigned int		len;
	u32			state;
	struct nsm_private	priv;
};

/*
 * Contents of statd callback when monitored host rebooted
 */
#define NLMSVC_XDRSIZE		sizeof(struct nlm_args)

bool	nlmsvc_decode_void(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool	nlmsvc_decode_testargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool	nlmsvc_decode_lockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool	nlmsvc_decode_cancargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool	nlmsvc_decode_unlockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool	nlmsvc_decode_res(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool	nlmsvc_decode_reboot(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool	nlmsvc_decode_shareargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool	nlmsvc_decode_notify(struct svc_rqst *rqstp, struct xdr_stream *xdr);

bool	nlmsvc_encode_testres(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool	nlmsvc_encode_res(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool	nlmsvc_encode_void(struct svc_rqst *rqstp, struct xdr_stream *xdr);
bool	nlmsvc_encode_shareres(struct svc_rqst *rqstp, struct xdr_stream *xdr);

#endif /* LOCKD_XDR_H */

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