1 | #include <machine/rtems-bsd-user-space.h> |
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2 | |
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3 | /* $NetBSD: clnt_simple.c,v 1.21 2000/07/06 03:10:34 christos Exp $ */ |
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4 | |
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5 | /*- |
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6 | * Copyright (c) 2009, Sun Microsystems, Inc. |
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7 | * All rights reserved. |
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8 | * |
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9 | * Redistribution and use in source and binary forms, with or without |
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10 | * modification, are permitted provided that the following conditions are met: |
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11 | * - Redistributions of source code must retain the above copyright notice, |
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12 | * this list of conditions and the following disclaimer. |
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13 | * - Redistributions in binary form must reproduce the above copyright notice, |
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14 | * this list of conditions and the following disclaimer in the documentation |
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15 | * and/or other materials provided with the distribution. |
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16 | * - Neither the name of Sun Microsystems, Inc. nor the names of its |
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17 | * contributors may be used to endorse or promote products derived |
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18 | * from this software without specific prior written permission. |
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19 | * |
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20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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21 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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24 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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30 | * POSSIBILITY OF SUCH DAMAGE. |
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31 | */ |
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32 | /* |
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33 | * Copyright (c) 1986-1991 by Sun Microsystems Inc. |
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34 | */ |
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35 | |
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36 | #if defined(LIBC_SCCS) && !defined(lint) |
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37 | static char *sccsid2 = "from: @(#)clnt_simple.c 1.35 87/08/11 Copyr 1984 Sun Micro"; |
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38 | static char *sccsid = "from: @(#)clnt_simple.c 2.2 88/08/01 4.0 RPCSRC"; |
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39 | #endif |
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40 | #include <sys/cdefs.h> |
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41 | __FBSDID("$FreeBSD$"); |
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42 | |
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43 | /* |
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44 | * clnt_simple.c |
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45 | * Simplified front end to client rpc. |
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46 | * |
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47 | */ |
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48 | |
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49 | #include "namespace.h" |
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50 | #include "reentrant.h" |
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51 | #include <rtems/bsd/sys/param.h> |
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52 | #include <stdio.h> |
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53 | #include <errno.h> |
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54 | #include <rpc/rpc.h> |
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55 | #include <string.h> |
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56 | #include <stdlib.h> |
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57 | #include <fcntl.h> |
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58 | #include <unistd.h> |
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59 | #include "un-namespace.h" |
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60 | #include "mt_misc.h" |
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61 | |
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62 | #ifndef MAXHOSTNAMELEN |
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63 | #define MAXHOSTNAMELEN 64 |
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64 | #endif |
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65 | |
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66 | #ifndef NETIDLEN |
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67 | #define NETIDLEN 32 |
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68 | #endif |
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69 | |
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70 | struct rpc_call_private { |
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71 | int valid; /* Is this entry valid ? */ |
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72 | CLIENT *client; /* Client handle */ |
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73 | pid_t pid; /* process-id at moment of creation */ |
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74 | rpcprog_t prognum; /* Program */ |
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75 | rpcvers_t versnum; /* Version */ |
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76 | char host[MAXHOSTNAMELEN]; /* Servers host */ |
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77 | char nettype[NETIDLEN]; /* Network type */ |
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78 | }; |
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79 | static struct rpc_call_private *rpc_call_private_main; |
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80 | static thread_key_t rpc_call_key; |
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81 | static once_t rpc_call_once = ONCE_INITIALIZER; |
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82 | static int rpc_call_key_error; |
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83 | |
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84 | static void rpc_call_key_init(void); |
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85 | static void rpc_call_destroy(void *); |
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86 | |
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87 | static void |
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88 | rpc_call_destroy(void *vp) |
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89 | { |
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90 | struct rpc_call_private *rcp = (struct rpc_call_private *)vp; |
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91 | |
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92 | if (rcp) { |
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93 | if (rcp->client) |
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94 | CLNT_DESTROY(rcp->client); |
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95 | free(rcp); |
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96 | } |
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97 | } |
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98 | |
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99 | static void |
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100 | rpc_call_key_init(void) |
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101 | { |
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102 | |
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103 | rpc_call_key_error = thr_keycreate(&rpc_call_key, rpc_call_destroy); |
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104 | } |
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105 | |
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106 | /* |
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107 | * This is the simplified interface to the client rpc layer. |
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108 | * The client handle is not destroyed here and is reused for |
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109 | * the future calls to same prog, vers, host and nettype combination. |
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110 | * |
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111 | * The total time available is 25 seconds. |
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112 | */ |
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113 | enum clnt_stat |
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114 | rpc_call(host, prognum, versnum, procnum, inproc, in, outproc, out, nettype) |
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115 | const char *host; /* host name */ |
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116 | rpcprog_t prognum; /* program number */ |
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117 | rpcvers_t versnum; /* version number */ |
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118 | rpcproc_t procnum; /* procedure number */ |
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119 | xdrproc_t inproc, outproc; /* in/out XDR procedures */ |
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120 | const char *in; |
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121 | char *out; /* recv/send data */ |
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122 | const char *nettype; /* nettype */ |
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123 | { |
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124 | struct rpc_call_private *rcp = (struct rpc_call_private *) 0; |
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125 | enum clnt_stat clnt_stat; |
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126 | struct timeval timeout, tottimeout; |
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127 | int main_thread = 1; |
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128 | |
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129 | if ((main_thread = thr_main())) { |
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130 | rcp = rpc_call_private_main; |
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131 | } else { |
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132 | if (thr_once(&rpc_call_once, rpc_call_key_init) != 0 || |
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133 | rpc_call_key_error != 0) { |
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134 | rpc_createerr.cf_stat = RPC_SYSTEMERROR; |
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135 | rpc_createerr.cf_error.re_errno = rpc_call_key_error; |
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136 | return (rpc_createerr.cf_stat); |
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137 | } |
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138 | rcp = (struct rpc_call_private *)thr_getspecific(rpc_call_key); |
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139 | } |
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140 | if (rcp == NULL) { |
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141 | rcp = malloc(sizeof (*rcp)); |
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142 | if (rcp == NULL) { |
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143 | rpc_createerr.cf_stat = RPC_SYSTEMERROR; |
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144 | rpc_createerr.cf_error.re_errno = errno; |
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145 | return (rpc_createerr.cf_stat); |
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146 | } |
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147 | if (main_thread) |
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148 | rpc_call_private_main = rcp; |
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149 | else |
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150 | thr_setspecific(rpc_call_key, (void *) rcp); |
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151 | rcp->valid = 0; |
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152 | rcp->client = NULL; |
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153 | } |
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154 | if ((nettype == NULL) || (nettype[0] == 0)) |
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155 | nettype = "netpath"; |
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156 | if (!(rcp->valid && rcp->pid == getpid() && |
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157 | (rcp->prognum == prognum) && |
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158 | (rcp->versnum == versnum) && |
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159 | (!strcmp(rcp->host, host)) && |
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160 | (!strcmp(rcp->nettype, nettype)))) { |
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161 | int fd; |
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162 | |
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163 | rcp->valid = 0; |
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164 | if (rcp->client) |
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165 | CLNT_DESTROY(rcp->client); |
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166 | /* |
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167 | * Using the first successful transport for that type |
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168 | */ |
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169 | rcp->client = clnt_create(host, prognum, versnum, nettype); |
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170 | rcp->pid = getpid(); |
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171 | if (rcp->client == NULL) { |
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172 | return (rpc_createerr.cf_stat); |
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173 | } |
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174 | /* |
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175 | * Set time outs for connectionless case. Do it |
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176 | * unconditionally. Faster than doing a t_getinfo() |
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177 | * and then doing the right thing. |
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178 | */ |
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179 | timeout.tv_usec = 0; |
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180 | timeout.tv_sec = 5; |
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181 | (void) CLNT_CONTROL(rcp->client, |
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182 | CLSET_RETRY_TIMEOUT, (char *)(void *)&timeout); |
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183 | if (CLNT_CONTROL(rcp->client, CLGET_FD, (char *)(void *)&fd)) |
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184 | _fcntl(fd, F_SETFD, 1); /* make it "close on exec" */ |
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185 | rcp->prognum = prognum; |
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186 | rcp->versnum = versnum; |
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187 | if ((strlen(host) < (size_t)MAXHOSTNAMELEN) && |
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188 | (strlen(nettype) < (size_t)NETIDLEN)) { |
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189 | (void) strcpy(rcp->host, host); |
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190 | (void) strcpy(rcp->nettype, nettype); |
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191 | rcp->valid = 1; |
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192 | } else { |
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193 | rcp->valid = 0; |
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194 | } |
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195 | } /* else reuse old client */ |
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196 | tottimeout.tv_sec = 25; |
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197 | tottimeout.tv_usec = 0; |
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198 | /*LINTED const castaway*/ |
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199 | clnt_stat = CLNT_CALL(rcp->client, procnum, inproc, (char *) in, |
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200 | outproc, out, tottimeout); |
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201 | /* |
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202 | * if call failed, empty cache |
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203 | */ |
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204 | if (clnt_stat != RPC_SUCCESS) |
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205 | rcp->valid = 0; |
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206 | return (clnt_stat); |
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207 | } |
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