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                 printf("Failed to allocate rpc context\n");
  39                 return NULL;
  40         }
  41         bzero(rpc, sizeof(struct rpc_context));
  42
  43         rpc->encodebuflen = 65536;
  44         rpc->encodebuf = malloc(rpc->encodebuflen);
  45         if (rpc->encodebuf == NULL) {
  46                 printf("Failed to allocate a buffer for rpc encoding\n");
  47                 free(rpc);
  48                 return NULL;
  49         }
  50
  51         rpc->auth = authunix_create_default();
  52         if (rpc->auth == NULL) {
  53                 printf("failed to create authunix\n");
  54                 free(rpc->encodebuf);
  55                 free(rpc);
  56                 return NULL;
  57         }
  58         rpc->xid = 1;
  59         rpc->fd = -1;
  60
  61         return rpc;
  62 }
  63
  64
  65 void rpc_set_auth(struct rpc_context *rpc, struct AUTH *auth)
  66 {
  67         if (rpc->auth != NULL) {
  68                 auth_destroy(rpc->auth);
  69         }
  70         rpc->auth = auth;
  71 }
  72
  73
  74 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
  75 {
  76         va_list ap;
  77         char *str;
  78
  79         if (rpc->error_string != NULL) {
  80                 free(rpc->error_string);
  81         }
  82         va_start(ap, error_string);
  83         vasprintf(&str, error_string, ap);
  84         rpc->error_string = str;
  85         va_end(ap);
  86 }
  87
  88 char *rpc_get_error(struct rpc_context *rpc)
  89 {
  90         return rpc->error_string;
  91 }
  92
  93 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
  94 {
  95         struct rpc_pdu *pdu;
  96
  97         while((pdu = rpc->outqueue) != NULL) {
  98                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
  99                 SLIST_REMOVE(&rpc->outqueue, pdu);
 100                 rpc_free_pdu(rpc, pdu);
 101         }
 102         while((pdu = rpc->waitpdu) != NULL) {
 103                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 104                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 105                 rpc_free_pdu(rpc, pdu);
 106         }
 107 }
 108
 109
 110 void rpc_destroy_context(struct rpc_context *rpc)
 111 {
 112         struct rpc_pdu *pdu;
 113
 114         while((pdu = rpc->outqueue) != NULL) {
 115                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 116                 SLIST_REMOVE(&rpc->outqueue, pdu);
 117                 rpc_free_pdu(rpc, pdu);
 118         }
 119         while((pdu = rpc->waitpdu) != NULL) {
 120                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 121                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 122                 rpc_free_pdu(rpc, pdu);
 123         }
 124
 125         auth_destroy(rpc->auth);
 126         rpc->auth =NULL;
 127
 128         if (rpc->fd != -1) {
 129                 close(rpc->fd);
 130         }
 131
 132         if (rpc->encodebuf != NULL) {
 133                 free(rpc->encodebuf);
 134                 rpc->encodebuf = NULL;
 135         }
 136
 137         if (rpc->error_string != NULL) {
 138                 free(rpc->error_string);
 139                 rpc->error_string = NULL;
 140         }
 141
 142         free(rpc);
 143 }
 144
 145