#ifndef _NFS_H
#define _NFS_H

#define SUNRPC_PORT     111

#define PROG_PORTMAP    100000
#define PROG_NFS        100003
#define PROG_MOUNT      100005

#define MSG_CALL        0
#define MSG_REPLY       1

#define PORTMAP_GETPORT 3

#define MOUNT_ADDENTRY  1
#define MOUNT_UMOUNTALL 4

#define NFS_LOOKUP      4
#define NFS_READLINK    5
#define NFS_READ        6

#define NFS_FHSIZE      32

#define NFSERR_PERM     1
#define NFSERR_NOENT    2
#define NFSERR_ACCES    13
#define NFSERR_ISDIR    21
#define NFSERR_INVAL    22

/* Block size used for NFS read accesses.  A RPC reply packet (including  all
 * headers) must fit within a single Ethernet frame to avoid fragmentation.
 * Chosen to be a power of two, as most NFS servers are optimized for this.  */
#define NFS_READ_SIZE   1024

#define NFS_MAXLINKDEPTH 16

struct rpc_t {
        struct iphdr ip;
        struct udphdr udp;
        union {
                uint8_t  data[300];             /* longest RPC call must fit!!!! */
                struct {
                        uint32_t id;
                        uint32_t type;
                        uint32_t rpcvers;
                        uint32_t prog;
                        uint32_t vers;
                        uint32_t proc;
                        uint32_t data[1];
                } call;
                struct {
                        uint32_t id;
                        uint32_t type;
                        uint32_t rstatus;
                        uint32_t verifier;
                        uint32_t v2;
                        uint32_t astatus;
                        uint32_t data[1];
                } reply;
        } u;
};

#endif  /* _NFS_H */