/* 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: pipepong2.c
*
* Description:
* This test runs in conjunction with the pipeping2 test.
* The pipeping2 test creates two pipes and passes two
* pipe fd's to this test. Then the pipeping2 test writes
* "ping" to this test and this 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 <stdio.h>
#include <string.h>
#include <stdlib.h>
#define NUM_ITERATIONS
10
int main(int argc, char** argv) {
PRFileDesc *pipe_read, *pipe_write;
PRStatus status;
char buf[
1024];
PRInt32 nBytes;
int idx;
pipe_read = PR_GetInheritedFD(
"PIPE_READ");
if (pipe_read == NULL) {
fprintf(stderr,
"PR_GetInheritedFD failed\n");
exit(
1);
}
status = PR_SetFDInheritable(pipe_read, PR_FALSE);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_SetFDInheritable failed\n");
exit(
1);
}
pipe_write = PR_GetInheritedFD(
"PIPE_WRITE");
if (pipe_write == NULL) {
fprintf(stderr,
"PR_GetInheritedFD failed\n");
exit(
1);
}
status = PR_SetFDInheritable(pipe_write, PR_FALSE);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_SetFDInheritable failed\n");
exit(
1);
}
for (idx =
0; idx < NUM_ITERATIONS; idx++) {
memset(buf,
0,
sizeof(buf));
nBytes = PR_Read(pipe_read, buf,
sizeof(buf));
if (nBytes == -
1) {
fprintf(stderr,
"PR_Read failed: (%d, %d)\n", PR_GetError(),
PR_GetOSError());
exit(
1);
}
printf(
"pong process: received \"%s\
"\n", buf);
if (nBytes !=
5) {
fprintf(stderr,
"pong process: expected 5 bytes but got %d bytes\n",
nBytes);
exit(
1);
}
if (strcmp(buf,
"ping") !=
0) {
fprintf(stderr,
"pong process: expected \"ping\
" but got \"%s\
"\n", buf);
exit(
1);
}
strcpy(buf,
"pong");
printf(
"pong process: sending \"%s\
"\n", buf);
nBytes = PR_Write(pipe_write, buf,
5);
if (nBytes == -
1) {
fprintf(stderr,
"PR_Write failed\n");
exit(
1);
}
}
status = PR_Close(pipe_read);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_Close failed\n");
exit(
1);
}
status = PR_Close(pipe_write);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_Close failed\n");
exit(
1);
}
return 0;
}