1 /* 2 * (C) Masami Komiya <mkomiya@sonare.it> 2004 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #ifndef __NFS_H__ 8 #define __NFS_H__ 9 10 #define SUNRPC_PORT 111 11 12 #define PROG_PORTMAP 100000 13 #define PROG_NFS 100003 14 #define PROG_MOUNT 100005 15 16 #define MSG_CALL 0 17 #define MSG_REPLY 1 18 19 #define PORTMAP_GETPORT 3 20 21 #define MOUNT_ADDENTRY 1 22 #define MOUNT_UMOUNTALL 4 23 24 #define NFS_LOOKUP 4 25 #define NFS_READLINK 5 26 #define NFS_READ 6 27 28 #define NFS3PROC_LOOKUP 3 29 30 #define NFS_FHSIZE 32 31 #define NFS3_FHSIZE 64 32 33 #define NFSERR_PERM 1 34 #define NFSERR_NOENT 2 35 #define NFSERR_ACCES 13 36 #define NFSERR_ISDIR 21 37 #define NFSERR_INVAL 22 38 39 /* 40 * Block size used for NFS read accesses. A RPC reply packet (including all 41 * headers) must fit within a single Ethernet frame to avoid fragmentation. 42 * However, if CONFIG_IP_DEFRAG is set, a bigger value could be used. In any 43 * case, most NFS servers are optimized for a power of 2. 44 */ 45 #define NFS_READ_SIZE 1024 /* biggest power of two that fits Ether frame */ 46 47 /* Values for Accept State flag on RPC answers (See: rfc1831) */ 48 enum rpc_accept_stat { 49 NFS_RPC_SUCCESS = 0, /* RPC executed successfully */ 50 NFS_RPC_PROG_UNAVAIL = 1, /* remote hasn't exported program */ 51 NFS_RPC_PROG_MISMATCH = 2, /* remote can't support version # */ 52 NFS_RPC_PROC_UNAVAIL = 3, /* program can't support procedure */ 53 NFS_RPC_GARBAGE_ARGS = 4, /* procedure can't decode params */ 54 NFS_RPC_SYSTEM_ERR = 5 /* errors like memory allocation failure */ 55 }; 56 57 struct rpc_t { 58 union { 59 uint8_t data[2048]; 60 struct { 61 uint32_t id; 62 uint32_t type; 63 uint32_t rpcvers; 64 uint32_t prog; 65 uint32_t vers; 66 uint32_t proc; 67 uint32_t data[1]; 68 } call; 69 struct { 70 uint32_t id; 71 uint32_t type; 72 uint32_t rstatus; 73 uint32_t verifier; 74 uint32_t v2; 75 uint32_t astatus; 76 uint32_t data[NFS_READ_SIZE]; 77 } reply; 78 } u; 79 } __attribute__((packed)); 80 void nfs_start(void); /* Begin NFS */ 81 82 83 /**********************************************************************/ 84 85 #endif /* __NFS_H__ */ 86