103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
/*
|
|
Copyright (C) 2004 Michael J. Silbersack. All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
1. Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
2. Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <sys/stat.h>
|
|
|
|
/*
|
|
* $FreeBSD$
|
|
* This program tests to make sure that wraparound writes and reads
|
|
* are working, assuming that 16K socket buffers are used. In order
|
|
* to really stress the pipe code with this test, kernel modifications
|
|
* nay be necessary.
|
|
*/
|
|
|
|
int main (void)
|
|
{
|
|
char buffer[32768], buffer2[32768];
|
|
int desc[2];
|
|
int buggy, error, i, successes, total;
|
|
struct stat status;
|
|
pid_t new_pid;
|
|
|
|
buggy = 0;
|
|
|
|
error = pipe(desc);
|
|
|
|
if (error)
|
|
err(0, "Couldn't allocate fds\n");
|
|
|
|
buffer[0] = 'A';
|
|
|
|
for (i = 0; i < 32768; i++) {
|
|
buffer[i] = buffer[i - 1] + 1;
|
|
if (buffer[i] > 'Z')
|
|
buffer[i] = 'A';
|
|
}
|
|
|
|
new_pid = fork();
|
|
|
|
if (new_pid == 0) {
|
|
error = write(desc[1], &buffer, 4096);
|
|
total += error;
|
|
error = write(desc[1], &buffer[total], 4096);
|
|
total += error;
|
|
error = write(desc[1], &buffer[total], 4000);
|
|
total += error;
|
|
printf("Wrote %d bytes, sleeping\n", total);
|
|
usleep(1000000);
|
|
error = write(desc[1], &buffer[total], 3000);
|
|
total += error;
|
|
error = write(desc[1], &buffer[total], 3000);
|
|
total += error;
|
|
printf("Wrote another 6000 bytes, %d total, done\n", total);
|
|
} else {
|
|
usleep(500000);
|
|
error = read(desc[0], &buffer2, 8192);
|
|
total += error;
|
|
printf("Read %d bytes, going back to sleep\n", error);
|
|
usleep(1000000);
|
|
error = read(desc[0], &buffer2[total], 16384);
|
|
total += error;
|
|
printf("Read %d bytes, done\n", error);
|
|
|
|
for (i = 0; i < total; i++) {
|
|
if (buffer[i] != buffer2[i]) {
|
|
buggy = 1;
|
|
printf("Location %d input: %hhx output: %hhx\n",
|
|
i, buffer[i], buffer2[i]);
|
|
}
|
|
}
|
|
|
|
if (buggy)
|
|
printf("FAILURE\n");
|
|
else
|
|
printf("SUCCESS\n");
|
|
}
|
|
|
|
|
|
}
|