1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * (C) Masami Komiya <mkomiya@sonare.it> 2004 4 */ 5 6 #ifndef __NFS_H__ 7 #define __NFS_H__ 8 9 #define SUNRPC_PORT 111 10 11 #define PROG_PORTMAP 100000 12 #define PROG_NFS 100003 13 #define PROG_MOUNT 100005 14 15 #define MSG_CALL 0 16 #define MSG_REPLY 1 17 18 #define PORTMAP_GETPORT 3 19 20 #define MOUNT_ADDENTRY 1 21 #define MOUNT_UMOUNTALL 4 22 23 #define NFS_LOOKUP 4 24 #define NFS_READLINK 5 25 #define NFS_READ 6 26 27 #define NFS3PROC_LOOKUP 3 28 29 #define NFS_FHSIZE 32 30 #define NFS3_FHSIZE 64 31 32 #define NFSERR_PERM 1 33 #define NFSERR_NOENT 2 34 #define NFSERR_ACCES 13 35 #define NFSERR_ISDIR 21 36 #define NFSERR_INVAL 22 37 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, a bigger value could be used. In any 42 * case, most NFS servers are optimized for a power of 2. 43 */ 44 #define NFS_READ_SIZE 1024 /* biggest power of two that fits Ether frame */ 45 #define NFS_MAX_ATTRS 26 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[NFS_READ_SIZE + (6 + NFS_MAX_ATTRS) * 60 sizeof(uint32_t)]; 61 struct { 62 uint32_t id; 63 uint32_t type; 64 uint32_t rpcvers; 65 uint32_t prog; 66 uint32_t vers; 67 uint32_t proc; 68 uint32_t data[1]; 69 } call; 70 struct { 71 uint32_t id; 72 uint32_t type; 73 uint32_t rstatus; 74 uint32_t verifier; 75 uint32_t v2; 76 uint32_t astatus; 77 uint32_t data[NFS_READ_SIZE / sizeof(uint32_t) + 78 NFS_MAX_ATTRS]; 79 } reply; 80 } u; 81 } __attribute__((packed)); 82 void nfs_start(void); /* Begin NFS */ 83 84 85 /**********************************************************************/ 86 87 #endif /* __NFS_H__ */ 88