1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* File: pipeping2.c
*
* Description:
* This test runs in conjunction with the pipepong2 test.
* This test creates two pipes and passes two pipe fd's
* to the pipepong2 test. Then this test writes "ping" to
* to the pipepong2 test and the pipepong2 test writes "pong"
* back. To run this pair of tests, just invoke pipeping2.
*
* Tested areas: process creation, pipes, file descriptor
* inheritance.
*/
#include "prerror.h"
#include "prio.h"
#include "prproces.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define NUM_ITERATIONS 10
static char *child_argv[] = { "pipepong2", NULL };
int main(int argc, char **argv)
{
PRFileDesc *in_pipe[2];
PRFileDesc *out_pipe[2];
PRStatus status;
PRProcess *process;
PRProcessAttr *attr;
char buf[1024];
PRInt32 nBytes;
PRInt32 exitCode;
int idx;
status = PR_CreatePipe(&in_pipe[0], &in_pipe[1]);
if (status == PR_FAILURE) {
fprintf(stderr, "PR_CreatePipe failed\n");
exit(1);
}
status = PR_CreatePipe(&out_pipe[0], &out_pipe[1]);
if (status == PR_FAILURE) {
fprintf(stderr, "PR_CreatePipe failed\n");
exit(1);
}
status = PR_SetFDInheritable(in_pipe[0], PR_FALSE);
if (status == PR_FAILURE) {
fprintf(stderr, "PR_SetFDInheritable failed\n");
exit(1);
}
status = PR_SetFDInheritable(in_pipe[1], PR_TRUE);
if (status == PR_FAILURE) {
fprintf(stderr, "PR_SetFDInheritable failed\n");
exit(1);
}
status = PR_SetFDInheritable(out_pipe[0], PR_TRUE);
if (status == PR_FAILURE) {
fprintf(stderr, "PR_SetFDInheritable failed\n");
exit(1);
}
status = PR_SetFDInheritable(out_pipe[1], PR_FALSE);
if (status == PR_FAILURE) {
fprintf(stderr, "PR_SetFDInheritable failed\n");
exit(1);
}
attr = PR_NewProcessAttr();
if (attr == NULL) {
fprintf(stderr, "PR_NewProcessAttr failed\n");
exit(1);
}
status = PR_ProcessAttrSetInheritableFD(attr, out_pipe[0], "PIPE_READ");
if (status == PR_FAILURE) {
fprintf(stderr, "PR_ProcessAttrSetInheritableFD failed\n");
exit(1);
}
status = PR_ProcessAttrSetInheritableFD(attr, in_pipe[1], "PIPE_WRITE");
if (status == PR_FAILURE) {
fprintf(stderr, "PR_ProcessAttrSetInheritableFD failed\n");
exit(1);
}
process = PR_CreateProcess(child_argv[0], child_argv, NULL, attr);
if (process == NULL) {
fprintf(stderr, "PR_CreateProcess failed\n");
exit(1);
}
PR_DestroyProcessAttr(attr);
status = PR_Close(out_pipe[0]);
if (status == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
status = PR_Close(in_pipe[1]);
if (status == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
for (idx = 0; idx < NUM_ITERATIONS; idx++) {
strcpy(buf, "ping");
printf("ping process: sending \"%s\"\n", buf);
nBytes = PR_Write(out_pipe[1], buf, 5);
if (nBytes == -1) {
fprintf(stderr, "PR_Write failed: (%d, %d)\n",
PR_GetError(), PR_GetOSError());
exit(1);
}
memset(buf, 0, sizeof(buf));
nBytes = PR_Read(in_pipe[0], buf, sizeof(buf));
if (nBytes == -1) {
fprintf(stderr, "PR_Read failed\n");
exit(1);
}
printf("ping process: received \"%s\"\n", buf);
if (nBytes != 5) {
fprintf(stderr, "ping process: expected 5 bytes but got %d bytes\n",
nBytes);
exit(1);
}
if (strcmp(buf, "pong") != 0) {
fprintf(stderr, "ping process: expected \"pong\" but got \"%s\"\n",
buf);
exit(1);
}
}
status = PR_Close(in_pipe[0]);
if (status == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
status = PR_Close(out_pipe[1]);
if (status == PR_FAILURE) {
fprintf(stderr, "PR_Close failed\n");
exit(1);
}
status = PR_WaitProcess(process, &exitCode);
if (status == PR_FAILURE) {
fprintf(stderr, "PR_WaitProcess failed\n");
exit(1);
}
if (exitCode == 0) {
printf("PASS\n");
return 0;
} else {
printf("FAIL\n");
return 1;
}
}
|
