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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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48df020aa1
According to The Open Group's NLM specification, NLM callers are variable length strings. XDR variable length strings use an unsigned 32 bit length. And internally, negative string lengths are not meaningful for the Linux NLM implementation. Clean up: Make nlm_lock.len and nlm_reboot.len unsigned integers. This makes the sign of NLM string lengths consistent with the sign of xdr_netobj lengths. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Acked-By: NeilBrown <neilb@suse.de> Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
114 lines
3.0 KiB
C
114 lines
3.0 KiB
C
/*
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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/nfs.h>
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#include <linux/sunrpc/xdr.h>
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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 __constant_htonl(NLM_LCK_GRANTED)
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#define nlm_lck_denied __constant_htonl(NLM_LCK_DENIED)
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#define nlm_lck_denied_nolocks __constant_htonl(NLM_LCK_DENIED_NOLOCKS)
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#define nlm_lck_blocked __constant_htonl(NLM_LCK_BLOCKED)
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#define nlm_lck_denied_grace_period __constant_htonl(NLM_LCK_DENIED_GRACE_PERIOD)
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#define nlm_drop_reply __constant_htonl(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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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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__be32 addr;
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__be32 vers;
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__be32 proto;
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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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int nlmsvc_decode_testargs(struct svc_rqst *, __be32 *, struct nlm_args *);
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int nlmsvc_encode_testres(struct svc_rqst *, __be32 *, struct nlm_res *);
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int nlmsvc_decode_lockargs(struct svc_rqst *, __be32 *, struct nlm_args *);
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int nlmsvc_decode_cancargs(struct svc_rqst *, __be32 *, struct nlm_args *);
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int nlmsvc_decode_unlockargs(struct svc_rqst *, __be32 *, struct nlm_args *);
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int nlmsvc_encode_res(struct svc_rqst *, __be32 *, struct nlm_res *);
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int nlmsvc_decode_res(struct svc_rqst *, __be32 *, struct nlm_res *);
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int nlmsvc_encode_void(struct svc_rqst *, __be32 *, void *);
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int nlmsvc_decode_void(struct svc_rqst *, __be32 *, void *);
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int nlmsvc_decode_shareargs(struct svc_rqst *, __be32 *, struct nlm_args *);
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int nlmsvc_encode_shareres(struct svc_rqst *, __be32 *, struct nlm_res *);
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int nlmsvc_decode_notify(struct svc_rqst *, __be32 *, struct nlm_args *);
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int nlmsvc_decode_reboot(struct svc_rqst *, __be32 *, struct nlm_reboot *);
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/*
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int nlmclt_encode_testargs(struct rpc_rqst *, u32 *, struct nlm_args *);
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int nlmclt_encode_lockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
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int nlmclt_encode_cancargs(struct rpc_rqst *, u32 *, struct nlm_args *);
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int nlmclt_encode_unlockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
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*/
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#endif /* LOCKD_XDR_H */
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