56 lines
940 B
C
56 lines
940 B
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <err.h>
|
|
#include <stdlib.h>
|
|
|
|
#define MAX_ERROR 3
|
|
#include "common.c"
|
|
|
|
int subtest = -1;
|
|
|
|
void do_test(void)
|
|
{
|
|
int fd;
|
|
char *wbuf, *rbuf;
|
|
off_t off=0;
|
|
size_t size;
|
|
ssize_t nwritten;
|
|
ssize_t nread;
|
|
char *filename;
|
|
int i;
|
|
|
|
subtest = 1;
|
|
|
|
if((filename = mktemp("pwrite_test_XXXXXXX")) == NULL) e(1);
|
|
if((fd = open(filename, O_CREAT|O_RDWR)) < 0) e(2);
|
|
|
|
size = 1 + rand() % 4096;
|
|
off = rand();
|
|
|
|
if((wbuf = malloc(sizeof(char)*size)) == NULL) e(3);
|
|
|
|
for(i = 0; i < size; i++) {
|
|
wbuf[i] = 1 + rand()%127;
|
|
}
|
|
|
|
if((nwritten = pwrite(fd, wbuf, size, off)) < 0) e(4);
|
|
if((rbuf = malloc(sizeof(char)*nwritten)) == NULL) e(5);
|
|
if((nread = pread(fd, rbuf, nwritten, off)) < 0) e(6);
|
|
if(strncmp(rbuf, wbuf, nread) != 0) e(7);
|
|
|
|
close(fd);
|
|
free(wbuf);
|
|
unlink(filename);
|
|
}
|
|
|
|
|
|
int main(void)
|
|
{
|
|
start(54);
|
|
do_test();
|
|
quit();
|
|
}
|