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pipeping2.c
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00001 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
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00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is the Netscape Portable Runtime (NSPR).
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Netscape Communications Corporation.
00019  * Portions created by the Initial Developer are Copyright (C) 2000
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
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00027  * in which case the provisions of the GPL or the LGPL are applicable instead
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00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 /*
00039  * File: pipeping2.c
00040  *
00041  * Description:
00042  * This test runs in conjunction with the pipepong2 test.
00043  * This test creates two pipes and passes two pipe fd's
00044  * to the pipepong2 test.  Then this test writes "ping" to
00045  * to the pipepong2 test and the pipepong2 test writes "pong"
00046  * back.  To run this pair of tests, just invoke pipeping2.
00047  *
00048  * Tested areas: process creation, pipes, file descriptor
00049  * inheritance.
00050  */
00051 
00052 #include "prerror.h"
00053 #include "prio.h"
00054 #include "prproces.h"
00055 
00056 #include <stdio.h>
00057 #include <string.h>
00058 #include <stdlib.h>
00059 
00060 #define NUM_ITERATIONS 10
00061 
00062 static char *child_argv[] = { "pipepong2", NULL };
00063 
00064 int main()
00065 {
00066     PRFileDesc *in_pipe[2];
00067     PRFileDesc *out_pipe[2];
00068     PRStatus status;
00069     PRProcess *process;
00070     PRProcessAttr *attr;
00071     char buf[1024];
00072     PRInt32 nBytes;
00073     PRInt32 exitCode;
00074     int idx;
00075 
00076     status = PR_CreatePipe(&in_pipe[0], &in_pipe[1]);
00077     if (status == PR_FAILURE) {
00078         fprintf(stderr, "PR_CreatePipe failed\n");
00079         exit(1);
00080     }
00081     status = PR_CreatePipe(&out_pipe[0], &out_pipe[1]);
00082     if (status == PR_FAILURE) {
00083         fprintf(stderr, "PR_CreatePipe failed\n");
00084         exit(1);
00085     }
00086 
00087     status = PR_SetFDInheritable(in_pipe[0], PR_FALSE);
00088     if (status == PR_FAILURE) {
00089         fprintf(stderr, "PR_SetFDInheritable failed\n");
00090         exit(1);
00091     }
00092     status = PR_SetFDInheritable(in_pipe[1], PR_TRUE);
00093     if (status == PR_FAILURE) {
00094         fprintf(stderr, "PR_SetFDInheritable failed\n");
00095         exit(1);
00096     }
00097     status = PR_SetFDInheritable(out_pipe[0], PR_TRUE);
00098     if (status == PR_FAILURE) {
00099         fprintf(stderr, "PR_SetFDInheritable failed\n");
00100         exit(1);
00101     }
00102     status = PR_SetFDInheritable(out_pipe[1], PR_FALSE);
00103     if (status == PR_FAILURE) {
00104         fprintf(stderr, "PR_SetFDInheritable failed\n");
00105         exit(1);
00106     }
00107 
00108     attr = PR_NewProcessAttr();
00109     if (attr == NULL) {
00110         fprintf(stderr, "PR_NewProcessAttr failed\n");
00111         exit(1);
00112     }
00113 
00114     status = PR_ProcessAttrSetInheritableFD(attr, out_pipe[0], "PIPE_READ");
00115     if (status == PR_FAILURE) {
00116         fprintf(stderr, "PR_ProcessAttrSetInheritableFD failed\n");
00117         exit(1);
00118     }
00119     status = PR_ProcessAttrSetInheritableFD(attr, in_pipe[1], "PIPE_WRITE");
00120     if (status == PR_FAILURE) {
00121         fprintf(stderr, "PR_ProcessAttrSetInheritableFD failed\n");
00122         exit(1);
00123     }
00124 
00125     process = PR_CreateProcess(child_argv[0], child_argv, NULL, attr);
00126     if (process == NULL) {
00127         fprintf(stderr, "PR_CreateProcess failed\n");
00128         exit(1);
00129     }
00130     PR_DestroyProcessAttr(attr);
00131     status = PR_Close(out_pipe[0]);
00132     if (status == PR_FAILURE) {
00133         fprintf(stderr, "PR_Close failed\n");
00134         exit(1);
00135     }
00136     status = PR_Close(in_pipe[1]);
00137     if (status == PR_FAILURE) {
00138         fprintf(stderr, "PR_Close failed\n");
00139         exit(1);
00140     }
00141 
00142     for (idx = 0; idx < NUM_ITERATIONS; idx++) {
00143         strcpy(buf, "ping");
00144         printf("ping process: sending \"%s\"\n", buf);
00145         nBytes = PR_Write(out_pipe[1], buf, 5);
00146         if (nBytes == -1) {
00147             fprintf(stderr, "PR_Write failed: (%d, %d)\n",
00148                     PR_GetError(), PR_GetOSError());
00149             exit(1);
00150         }
00151         memset(buf, 0, sizeof(buf));
00152         nBytes = PR_Read(in_pipe[0], buf, sizeof(buf));
00153         if (nBytes == -1) {
00154             fprintf(stderr, "PR_Read failed\n");
00155             exit(1);
00156         }
00157         printf("ping process: received \"%s\"\n", buf);
00158         if (nBytes != 5) {
00159             fprintf(stderr, "ping process: expected 5 bytes but got %d bytes\n",
00160                     nBytes);
00161             exit(1);
00162         }
00163         if (strcmp(buf, "pong") != 0) {
00164             fprintf(stderr, "ping process: expected \"pong\" but got \"%s\"\n",
00165                     buf);
00166             exit(1);
00167         }
00168     }
00169 
00170     status = PR_Close(in_pipe[0]);
00171     if (status == PR_FAILURE) {
00172         fprintf(stderr, "PR_Close failed\n");
00173         exit(1);
00174     }
00175     status = PR_Close(out_pipe[1]);
00176     if (status == PR_FAILURE) {
00177         fprintf(stderr, "PR_Close failed\n");
00178         exit(1);
00179     }
00180     status = PR_WaitProcess(process, &exitCode);
00181     if (status == PR_FAILURE) {
00182         fprintf(stderr, "PR_WaitProcess failed\n");
00183         exit(1);
00184     }
00185     if (exitCode == 0) {
00186         printf("PASS\n");
00187         return 0;
00188     } else {
00189         printf("FAIL\n");
00190         return 1;
00191     }
00192 }