nsprpub/pr/tests/pipeping2.c

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
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  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is the Netscape Portable Runtime (NSPR).
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 2000
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *
  24  * Alternatively, the contents of this file may be used under the terms of
  25  * either the GNU General Public License Version 2 or later (the "GPL"), or
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  34  * the terms of any one of the MPL, the GPL or the LGPL.
  35  *
  36  * ***** END LICENSE BLOCK ***** */
  37
  38 /*
  39  * File: pipeping2.c
  40  *
  41  * Description:
  42  * This test runs in conjunction with the pipepong2 test.
  43  * This test creates two pipes and passes two pipe fd's
  44  * to the pipepong2 test.  Then this test writes "ping" to
  45  * to the pipepong2 test and the pipepong2 test writes "pong"
  46  * back.  To run this pair of tests, just invoke pipeping2.
  47  *
  48  * Tested areas: process creation, pipes, file descriptor
  49  * inheritance.
  50  */
  51
  52 #include "prerror.h"
  53 #include "prio.h"
  54 #include "prproces.h"
  55
  56 #include <stdio.h>
  57 #include <string.h>
  58 #include <stdlib.h>
  59
  60 #define NUM_ITERATIONS 10
  61
  62 static char *child_argv[] = { "pipepong2", NULL };
  63
  64 int main()
  65 {
  66     PRFileDesc *in_pipe[2];
  67     PRFileDesc *out_pipe[2];
  68     PRStatus status;
  69     PRProcess *process;
  70     PRProcessAttr *attr;
  71     char buf[1024];
  72     PRInt32 nBytes;
  73     PRInt32 exitCode;
  74     int idx;
  75
  76     status = PR_CreatePipe(&in_pipe[0], &in_pipe[1]);
  77     if (status == PR_FAILURE) {
  78         fprintf(stderr, "PR_CreatePipe failed\n");
  79         exit(1);
  80     }
  81     status = PR_CreatePipe(&out_pipe[0], &out_pipe[1]);
  82     if (status == PR_FAILURE) {
  83         fprintf(stderr, "PR_CreatePipe failed\n");
  84         exit(1);
  85     }
  86
  87     status = PR_SetFDInheritable(in_pipe[0], PR_FALSE);
  88     if (status == PR_FAILURE) {
  89         fprintf(stderr, "PR_SetFDInheritable failed\n");
  90         exit(1);
  91     }
  92     status = PR_SetFDInheritable(in_pipe[1], PR_TRUE);
  93     if (status == PR_FAILURE) {
  94         fprintf(stderr, "PR_SetFDInheritable failed\n");
  95         exit(1);
  96     }
  97     status = PR_SetFDInheritable(out_pipe[0], PR_TRUE);
  98     if (status == PR_FAILURE) {
  99         fprintf(stderr, "PR_SetFDInheritable failed\n");
 100         exit(1);
 101     }
 102     status = PR_SetFDInheritable(out_pipe[1], PR_FALSE);
 103     if (status == PR_FAILURE) {
 104         fprintf(stderr, "PR_SetFDInheritable failed\n");
 105         exit(1);
 106     }
 107
 108     attr = PR_NewProcessAttr();
 109     if (attr == NULL) {
 110         fprintf(stderr, "PR_NewProcessAttr failed\n");
 111         exit(1);
 112     }
 113
 114     status = PR_ProcessAttrSetInheritableFD(attr, out_pipe[0], "PIPE_READ");
 115     if (status == PR_FAILURE) {
 116         fprintf(stderr, "PR_ProcessAttrSetInheritableFD failed\n");
 117         exit(1);
 118     }
 119     status = PR_ProcessAttrSetInheritableFD(attr, in_pipe[1], "PIPE_WRITE");
 120     if (status == PR_FAILURE) {
 121         fprintf(stderr, "PR_ProcessAttrSetInheritableFD failed\n");
 122         exit(1);
 123     }
 124
 125     process = PR_CreateProcess(child_argv[0], child_argv, NULL, attr);
 126     if (process == NULL) {
 127         fprintf(stderr, "PR_CreateProcess failed\n");
 128         exit(1);
 129     }
 130     PR_DestroyProcessAttr(attr);
 131     status = PR_Close(out_pipe[0]);
 132     if (status == PR_FAILURE) {
 133         fprintf(stderr, "PR_Close failed\n");
 134         exit(1);
 135     }
 136     status = PR_Close(in_pipe[1]);
 137     if (status == PR_FAILURE) {
 138         fprintf(stderr, "PR_Close failed\n");
 139         exit(1);
 140     }
 141
 142     for (idx = 0; idx < NUM_ITERATIONS; idx++) {
 143         strcpy(buf, "ping");
 144         printf("ping process: sending \"%s\"\n", buf);
 145         nBytes = PR_Write(out_pipe[1], buf, 5);
 146         if (nBytes == -1) {
 147             fprintf(stderr, "PR_Write failed: (%d, %d)\n",
 148                     PR_GetError(), PR_GetOSError());
 149             exit(1);
 150         }
 151         memset(buf, 0, sizeof(buf));
 152         nBytes = PR_Read(in_pipe[0], buf, sizeof(buf));
 153         if (nBytes == -1) {
 154             fprintf(stderr, "PR_Read failed\n");
 155             exit(1);
 156         }
 157         printf("ping process: received \"%s\"\n", buf);
 158         if (nBytes != 5) {
 159             fprintf(stderr, "ping process: expected 5 bytes but got %d bytes\n",
 160                     nBytes);
 161             exit(1);
 162         }
 163         if (strcmp(buf, "pong") != 0) {
 164             fprintf(stderr, "ping process: expected \"pong\" but got \"%s\"\n",
 165                     buf);
 166             exit(1);
 167         }
 168     }
 169
 170     status = PR_Close(in_pipe[0]);
 171     if (status == PR_FAILURE) {
 172         fprintf(stderr, "PR_Close failed\n");
 173         exit(1);
 174     }
 175     status = PR_Close(out_pipe[1]);
 176     if (status == PR_FAILURE) {
 177         fprintf(stderr, "PR_Close failed\n");
 178         exit(1);
 179     }
 180     status = PR_WaitProcess(process, &exitCode);
 181     if (status == PR_FAILURE) {
 182         fprintf(stderr, "PR_WaitProcess failed\n");
 183         exit(1);
 184     }
 185     if (exitCode == 0) {
 186         printf("PASS\n");
 187         return 0;
 188     } else {
 189         printf("FAIL\n");
 190         return 1;
 191     }
 192 }