include/libnfs-private.h

   1 /*
   2    Copyright (C) 2010 by Ronnie Sahlberg <ronniesahlberg@gmail.com>
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU Lesser General Public License as published by
   6    the Free Software Foundation; either version 2.1 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public License
  15    along with this program; if not, see <http://www.gnu.org/licenses/>.
  16 */
  17 #include <rpc/auth.h>
  18
  19 struct rpc_context {
  20         int fd;
  21         int is_connected;
  22
  23         char *error_string;
  24
  25         rpc_cb connect_cb;
  26         void *connect_data;
  27
  28         AUTH *auth;
  29         unsigned long xid;
  30
  31        /* buffer used for encoding RPC PDU */
  32        char *encodebuf;
  33        int encodebuflen;
  34
  35        struct rpc_pdu *outqueue;
  36        struct sockaddr_storage udp_src;
  37        struct rpc_pdu *waitpdu;
  38
  39        int inpos;
  40        int insize;
  41        char *inbuf;
  42
  43        /* special fields for UDP, which can sometimes be BROADCASTed */
  44        int is_udp;
  45        struct sockaddr *udp_dest;
  46        int is_broadcast;
  47 };
  48
  49 struct rpc_pdu {
  50         struct rpc_pdu *next;
  51
  52         unsigned long xid;
  53         XDR xdr;
  54
  55         int written;
  56         struct rpc_data outdata;
  57
  58         rpc_cb cb;
  59         void *private_data;
  60
  61         /* function to decode the xdr reply data and buffer to decode into */
  62         xdrproc_t xdr_decode_fn;
  63         caddr_t xdr_decode_buf;
  64         int xdr_decode_bufsize;
  65 };
  66
  67 struct rpc_pdu *rpc_allocate_pdu(struct rpc_context *rpc, int program, int version, int procedure, rpc_cb cb, void *private_data, xdrproc_t xdr_decode_fn, int xdr_bufsize);
  68 void rpc_free_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu);
  69 int rpc_queue_pdu(struct rpc_context *rpc, struct rpc_pdu *pdu);
  70 int rpc_get_pdu_size(char *buf);
  71 int rpc_process_pdu(struct rpc_context *rpc, char *buf, int size);
  72 void rpc_error_all_pdus(struct rpc_context *rpc, char *error);
  73
  74 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...);
  75 void nfs_set_error(struct nfs_context *nfs, char *error_string, ...);
  76
  77 struct rpc_context *nfs_get_rpc_context(struct nfs_context *nfs);
  78
  79 /* we dont want to expose UDP to normal applications/users  this is private to libnfs to use exclusively for broadcast RPC */
  80 int rpc_bind_udp(struct rpc_context *rpc, char *addr, int port);
  81 int rpc_set_udp_destination(struct rpc_context *rpc, char *addr, int port, int is_broadcast);
  82 struct rpc_context *rpc_init_udp_context(void);
  83 struct sockaddr *rpc_get_recv_sockaddr(struct rpc_context *rpc);
  84