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 <rpc/xdr.h>
  25 #include "slist.h"
  26 #include "libnfs.h"
  27 #include "libnfs-raw.h"
  28 #include "libnfs-private.h"
  29
  30 struct rpc_context *rpc_init_context(void)
  31 {
  32         struct rpc_context *rpc;
  33
  34         rpc = malloc(sizeof(struct rpc_context));
  35         if (rpc == NULL) {
  36                 printf("Failed to allocate rpc context\n");
  37                 return NULL;
  38         }
  39         bzero(rpc, sizeof(struct rpc_context));
  40
  41         rpc->encodebuflen = 65536;
  42         rpc->encodebuf = malloc(rpc->encodebuflen);
  43         if (rpc->encodebuf == NULL) {
  44                 printf("Failed to allocate a buffer for rpc encoding\n");
  45                 free(rpc);
  46                 return NULL;
  47         }
  48
  49         rpc->auth = authunix_create_default();
  50         if (rpc->auth == NULL) {
  51                 printf("failed to create authunix\n");
  52                 free(rpc->encodebuf);
  53                 free(rpc);
  54                 return NULL;
  55         }
  56         rpc->xid = 1;
  57         rpc->fd = -1;
  58
  59         return rpc;
  60 }
  61
  62
  63 void rpc_set_auth(struct rpc_context *rpc, struct AUTH *auth)
  64 {
  65         if (rpc->auth != NULL) {
  66                 auth_destroy(rpc->auth);
  67         }
  68         rpc->auth = auth;
  69 }
  70
  71
  72 void rpc_set_error(struct rpc_context *rpc, char *error_string, ...)
  73 {
  74         va_list ap;
  75         char *str;
  76
  77         if (rpc->error_string != NULL) {
  78                 free(rpc->error_string);
  79         }
  80         va_start(ap, error_string);
  81         vasprintf(&str, error_string, ap);
  82         rpc->error_string = str;
  83         va_end(ap);
  84 }
  85
  86 char *rpc_get_error(struct rpc_context *rpc)
  87 {
  88         return rpc->error_string;
  89 }
  90
  91 void rpc_error_all_pdus(struct rpc_context *rpc, char *error)
  92 {
  93         struct rpc_pdu *pdu;
  94
  95         while((pdu = rpc->outqueue) != NULL) {
  96                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
  97                 SLIST_REMOVE(&rpc->outqueue, pdu);
  98                 rpc_free_pdu(rpc, pdu);
  99         }
 100         while((pdu = rpc->waitpdu) != NULL) {
 101                 pdu->cb(rpc, RPC_STATUS_ERROR, error, pdu->private_data);
 102                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 103                 rpc_free_pdu(rpc, pdu);
 104         }
 105 }
 106
 107
 108 void rpc_destroy_context(struct rpc_context *rpc)
 109 {
 110         struct rpc_pdu *pdu;
 111
 112         while((pdu = rpc->outqueue) != NULL) {
 113                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 114                 SLIST_REMOVE(&rpc->outqueue, pdu);
 115                 rpc_free_pdu(rpc, pdu);
 116         }
 117         while((pdu = rpc->waitpdu) != NULL) {
 118                 pdu->cb(rpc, RPC_STATUS_CANCEL, NULL, pdu->private_data);
 119                 SLIST_REMOVE(&rpc->waitpdu, pdu);
 120                 rpc_free_pdu(rpc, pdu);
 121         }
 122
 123         auth_destroy(rpc->auth);
 124         rpc->auth =NULL;
 125
 126         if (rpc->fd != -1) {
 127                 close(rpc->fd);
 128         }
 129
 130         if (rpc->encodebuf != NULL) {
 131                 free(rpc->encodebuf);
 132                 rpc->encodebuf = NULL;
 133         }
 134
 135         if (rpc->error_string != NULL) {
 136                 free(rpc->error_string);
 137                 rpc->error_string = NULL;
 138         }
 139
 140         free(rpc);
 141 }
 142
 143