lib/init.c

   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
  18 #define _GNU_SOURCE
  19 #include <stdio.h>
  20 #include <stdarg.h>
  21 #include <unistd.h>
  22 #include <string.h>
  23 #include <strings.h>
  24 #include <stdlib.h>
  25 #include <rpc/rpc.h>
  26 #include <rpc/xdr.h>
  27 #include "slist.h"
  28 #include "libnfs.h"
  29 #include "libnfs-raw.h"
  30 #include "libnfs-private.h"
  31
  32 struct rpc_context *rpc_init_context(void)
  33 {
  34         struct rpc_context *rpc;
  35
  36         rpc = malloc(sizeof(struct rpc_context));
  37         if (rpc == NULL) {
  38                 return NULL;
  39         }
  40         bzero(rpc, sizeof(struct rpc_context));
  41
  42         rpc->encodebuflen = 65536;
  43         rpc->encodebuf = malloc(rpc->encodebuflen);
  44         if (rpc->encodebuf == NULL) {
  45                 free(rpc);
  46                 return NULL;
  47         }
  48
  49         rpc->auth = authunix_create_default();
  50         if (rpc->auth == NULL) {
  51                 free(rpc->encodebuf);
  52                 free(rpc);
  53                 return NULL;
  54         }
  55         rpc->xid = 1;
  56         rpc->fd = -1;
  57
  58         return rpc;
  59 }
  60
  61
  62 struct rpc_context *rpc_init_udp_context(void)
  63 {
  64         struct rpc_context *rpc;
  65
  66         rpc = rpc_init_context();
  67         if (rpc != NULL) {
  68                 rpc->is_udp = 1;
  69         }
  70
  71         return rpc;
  72 }
  73
  74 void rpc_set_auth(struct rpc_context *rpc, struct AUTH *auth)
  75 {
  76         if (rpc->auth != NULL) {
  77                 auth_destroy(rpc->auth);
  78         }
  79         rpc->auth = auth;
  80 }
  81
  82
  83 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
  84 {
  85         va_list ap;
  86         char *str;
  87
  88         if (rpc->error_string != NULL) {
  89                 free(rpc->error_string);
  90         }
  91         va_start(ap, error_string);
  92         vasprintf(&str, error_string, ap);
  93         rpc->error_string = str;
  94         va_end(ap);
  95 }
  96
  97 char *rpc_get_error(struct rpc_context *rpc)
  98 {
  99         return rpc->error_string;
 100 }
 101
 102 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
 103 {
 104         struct rpc_pdu *pdu;
 105
 106         while((pdu = rpc->outqueue) != NULL) {
 107                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 108                 SLIST_REMOVE(&rpc->outqueue, pdu);
 109                 rpc_free_pdu(rpc, pdu);
 110         }
 111         while((pdu = rpc->waitpdu) != NULL) {
 112                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 113                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 114                 rpc_free_pdu(rpc, pdu);
 115         }
 116 }
 117
 118
 119 void rpc_destroy_context(struct rpc_context *rpc)
 120 {
 121         struct rpc_pdu *pdu;
 122
 123         while((pdu = rpc->outqueue) != NULL) {
 124                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 125                 SLIST_REMOVE(&rpc->outqueue, pdu);
 126                 rpc_free_pdu(rpc, pdu);
 127         }
 128         while((pdu = rpc->waitpdu) != NULL) {
 129                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 130                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 131                 rpc_free_pdu(rpc, pdu);
 132         }
 133
 134         auth_destroy(rpc->auth);
 135         rpc->auth =NULL;
 136
 137         if (rpc->fd != -1) {
 138                 close(rpc->fd);
 139         }
 140
 141         if (rpc->encodebuf != NULL) {
 142                 free(rpc->encodebuf);
 143                 rpc->encodebuf = NULL;
 144         }
 145
 146         if (rpc->error_string != NULL) {
 147                 free(rpc->error_string);
 148                 rpc->error_string = NULL;
 149         }
 150
 151         if (rpc->udp_dest != NULL) {
 152                 free(rpc->udp_dest);
 153                 rpc->udp_dest = NULL;
 154         }
 155
 156         free(rpc);
 157 }
 158
 159