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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <err.h>
#include <stdlib.h>
int max_error = 3;
#include "common.h"
int subtest = -1;
static void do_test(void)
{
int fd;
char *wbuf, *rbuf;
off_t off=0;
size_t size;
ssize_t nwritten;
ssize_t nread;
char filename[] = "pwrite_test_XXXXXXX";
int i;
subtest = 1;
if ((fd = mkstemp(filename)) < 0) e(1);
size = 1 + rand() % 4096;
off = rand();
if((wbuf = malloc(sizeof(char)*size)) == NULL) e(2);
for(i = 0; i < size; i++) {
wbuf[i] = 1 + rand()%127;
}
if ((nwritten = pwrite(fd, wbuf, size, off)) < 0) e(3);
if ((rbuf = malloc(sizeof(char)*nwritten)) == NULL) e(4);
if ((nread = pread(fd, rbuf, nwritten, off)) < 0) e(5);
if (strncmp(rbuf, wbuf, nread) != 0) e(6);
close(fd);
free(wbuf);
unlink(filename);
}
int main(void)
{
start(54);
do_test();
quit();
return(-1); /* Unreachable */
}
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