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 /* Block size used for NFS read accesses. A RPC reply packet (including all 40 * headers) must fit within a single Ethernet frame to avoid fragmentation. 41 * However, if CONFIG_IP_DEFRAG is set, the config file may want to use a 42 * bigger value. In any case, most NFS servers are optimized for a power of 2. 43 */ 44 #ifdef CONFIG_NFS_READ_SIZE 45 #define NFS_READ_SIZE CONFIG_NFS_READ_SIZE 46 #else 47 #define NFS_READ_SIZE 1024 /* biggest power of two that fits Ether frame */ 48 #endif 49 50 /* Values for Accept State flag on RPC answers (See: rfc1831) */ 51 enum rpc_accept_stat { 52 NFS_RPC_SUCCESS = 0, /* RPC executed successfully */ 53 NFS_RPC_PROG_UNAVAIL = 1, /* remote hasn't exported program */ 54 NFS_RPC_PROG_MISMATCH = 2, /* remote can't support version # */ 55 NFS_RPC_PROC_UNAVAIL = 3, /* program can't support procedure */ 56 NFS_RPC_GARBAGE_ARGS = 4, /* procedure can't decode params */ 57 NFS_RPC_SYSTEM_ERR = 5 /* errors like memory allocation failure */ 58 }; 59 60 struct rpc_t { 61 union { 62 uint8_t data[2048]; 63 struct { 64 uint32_t id; 65 uint32_t type; 66 uint32_t rpcvers; 67 uint32_t prog; 68 uint32_t vers; 69 uint32_t proc; 70 uint32_t data[1]; 71 } call; 72 struct { 73 uint32_t id; 74 uint32_t type; 75 uint32_t rstatus; 76 uint32_t verifier; 77 uint32_t v2; 78 uint32_t astatus; 79 uint32_t data[NFS_READ_SIZE / sizeof(uint32_t)]; 80 } reply; 81 } u; 82 }; 83 void nfs_start(void); /* Begin NFS */ 84 85 86 /**********************************************************************/ 87 88 #endif /* __NFS_H__ */ 89