| 1 | /* |
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| 2 | * linux/include/linux/lockd/xdr.h |
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| 3 | * |
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| 4 | * XDR types for the NLM protocol |
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| 5 | * |
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| 6 | * Copyright (C) 1996 Olaf Kirch <okir@monad.swb.de> |
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| 7 | */ |
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| 8 | |
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| 9 | #ifndef LOCKD_XDR_H |
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| 10 | #define LOCKD_XDR_H |
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| 11 | |
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| 12 | #include <asm/types.h> |
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| 13 | |
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| 14 | #include <linux/fs.h> |
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| 15 | #include <linux/nfs.h> |
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| 16 | |
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| 17 | #define NLM_MAXCOOKIELEN 32 |
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| 18 | #define NLM_MAXSTRLEN 1024 |
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| 19 | |
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| 20 | #define nlm_granted __constant_htonl(NLM_LCK_GRANTED) |
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| 21 | #define nlm_lck_denied __constant_htonl(NLM_LCK_DENIED) |
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| 22 | #define nlm_lck_denied_nolocks __constant_htonl(NLM_LCK_DENIED_NOLOCKS) |
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| 23 | #define nlm_lck_blocked __constant_htonl(NLM_LCK_BLOCKED) |
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| 24 | #define nlm_lck_denied_grace_period __constant_htonl(NLM_LCK_DENIED_GRACE_PERIOD) |
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| 25 | |
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| 26 | /* Lock info passed via NLM */ |
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| 27 | struct nlm_lock { |
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| 28 | char * caller; |
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| 29 | int len; /* length of "caller" */ |
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| 30 | struct nfs_fh fh; |
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| 31 | struct xdr_netobj oh; |
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| 32 | struct file_lock fl; |
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| 33 | }; |
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| 34 | |
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| 35 | /* |
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| 36 | * NLM cookies. Technically they can be 1K, but Linux only uses 8 bytes. |
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| 37 | * FreeBSD uses 16, Apple Mac OS X 10.3 uses 20. Therefore we set it to |
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| 38 | * 32 bytes. |
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| 39 | */ |
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| 40 | |
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| 41 | struct nlm_cookie |
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| 42 | { |
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| 43 | unsigned char data[NLM_MAXCOOKIELEN]; |
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| 44 | unsigned int len; |
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| 45 | }; |
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| 46 | |
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| 47 | /* |
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| 48 | * Generic lockd arguments for all but sm_notify |
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| 49 | */ |
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| 50 | struct nlm_args { |
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| 51 | struct nlm_cookie cookie; |
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| 52 | struct nlm_lock lock; |
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| 53 | __u32 block; |
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| 54 | __u32 reclaim; |
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| 55 | __u32 state; |
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| 56 | __u32 monitor; |
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| 57 | __u32 fsm_access; |
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| 58 | __u32 fsm_mode; |
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| 59 | }; |
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| 60 | |
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| 61 | typedef struct nlm_args nlm_args; |
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| 62 | |
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| 63 | /* |
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| 64 | * Generic lockd result |
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| 65 | */ |
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| 66 | struct nlm_res { |
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| 67 | struct nlm_cookie cookie; |
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| 68 | __u32 status; |
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| 69 | struct nlm_lock lock; |
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| 70 | }; |
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| 71 | |
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| 72 | /* |
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| 73 | * statd callback when client has rebooted |
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| 74 | */ |
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| 75 | struct nlm_reboot { |
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| 76 | char * mon; |
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| 77 | int len; |
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| 78 | __u32 state; |
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| 79 | __u32 addr; |
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| 80 | __u32 vers; |
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| 81 | __u32 proto; |
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| 82 | }; |
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| 83 | |
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| 84 | /* |
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| 85 | * Contents of statd callback when monitored host rebooted |
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| 86 | */ |
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| 87 | #define NLMSVC_XDRSIZE sizeof(struct nlm_args) |
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| 88 | |
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| 89 | int nlmsvc_decode_testargs(struct svc_rqst *, __u32 *, struct nlm_args *); |
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| 90 | int nlmsvc_encode_testres(struct svc_rqst *, __u32 *, struct nlm_res *); |
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| 91 | int nlmsvc_decode_lockargs(struct svc_rqst *, __u32 *, struct nlm_args *); |
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| 92 | int nlmsvc_decode_cancargs(struct svc_rqst *, __u32 *, struct nlm_args *); |
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| 93 | int nlmsvc_decode_unlockargs(struct svc_rqst *, __u32 *, struct nlm_args *); |
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| 94 | int nlmsvc_encode_res(struct svc_rqst *, __u32 *, struct nlm_res *); |
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| 95 | int nlmsvc_decode_res(struct svc_rqst *, __u32 *, struct nlm_res *); |
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| 96 | int nlmsvc_encode_void(struct svc_rqst *, __u32 *, void *); |
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| 97 | int nlmsvc_decode_void(struct svc_rqst *, __u32 *, void *); |
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| 98 | int nlmsvc_decode_shareargs(struct svc_rqst *, __u32 *, struct nlm_args *); |
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| 99 | int nlmsvc_encode_shareres(struct svc_rqst *, __u32 *, struct nlm_res *); |
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| 100 | int nlmsvc_decode_notify(struct svc_rqst *, __u32 *, struct nlm_args *); |
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| 101 | int nlmsvc_decode_reboot(struct svc_rqst *, __u32 *, struct nlm_reboot *); |
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| 102 | /* |
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| 103 | int nlmclt_encode_testargs(struct rpc_rqst *, __u32 *, struct nlm_args *); |
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| 104 | int nlmclt_encode_lockargs(struct rpc_rqst *, __u32 *, struct nlm_args *); |
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| 105 | int nlmclt_encode_cancargs(struct rpc_rqst *, __u32 *, struct nlm_args *); |
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| 106 | int nlmclt_encode_unlockargs(struct rpc_rqst *, __u32 *, struct nlm_args *); |
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| 107 | */ |
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| 108 | |
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| 109 | #endif /* LOCKD_XDR_H */ |
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