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/* 15.t
- pwritev and preadv tests.
*/
#include "aio_setup.h"
#include <sys/mman.h>
#include <sys/uio.h>
#include <errno.h>
int test_main(void)
{
#define SIZE 512
#define NUM_IOV 10
char buf[SIZE*NUM_IOV];
struct iovec iov[NUM_IOV];
int rwfd;
int status = 0, res, i;
rwfd = open("testdir/rwfile", O_RDWR); assert(rwfd != -1);
res = ftruncate(rwfd, sizeof(buf)); assert(res == 0);
for (i = 0; i < NUM_IOV; i++) {
iov[i].iov_base = buf + i*SIZE;
iov[i].iov_len = SIZE;
memset(iov[i].iov_base, i, SIZE);
}
status |= attempt_rw(rwfd, iov, NUM_IOV, 0, WRITEV, SIZE*NUM_IOV);
res = pread(rwfd, buf, sizeof(buf), 0); assert(res == sizeof(buf));
for (i = 0; i < NUM_IOV; i++) {
unsigned int j;
for (j = 0; j < SIZE; j++) {
if (buf[i*SIZE + j] != i) {
printf("Unexpected value after writev at %i\n",
i*SIZE + j);
status |= 1;
break;
}
}
}
if (!status)
printf("Checking memory: [Success]\n");
memset(buf, 0, sizeof(buf));
status |= attempt_rw(rwfd, iov, NUM_IOV, 0, READV, SIZE*NUM_IOV);
for (i = 0; i < NUM_IOV; i++) {
unsigned int j;
for (j = 0; j < SIZE; j++) {
if (buf[i*SIZE + j] != i) {
printf("Unexpected value after readv at %i\n",
i*SIZE + j);
status |= 1;
break;
}
}
}
/* Check that offset works. */
status |= attempt_rw(rwfd, iov+1, NUM_IOV-1, SIZE, WRITEV,
SIZE*(NUM_IOV-1));
memset(buf, 0, sizeof(buf));
res = pread(rwfd, buf, sizeof(buf), 0); assert(res == sizeof(buf));
for (i = 1; i < NUM_IOV; i++) {
unsigned int j;
for (j = 0; j < SIZE; j++) {
if (buf[i*SIZE + j] != i) {
printf("Unexpected value after offset writev at %i\n",
i*SIZE + j);
status |= 1;
break;
}
}
}
if (!status)
printf("Checking memory: [Success]\n");
memset(buf, 0, sizeof(buf));
status |= attempt_rw(rwfd, iov+1, NUM_IOV-1, SIZE, READV,
SIZE*(NUM_IOV-1));
for (i = 1; i < NUM_IOV; i++) {
unsigned int j;
for (j = 0; j < SIZE; j++) {
if (buf[i*SIZE + j] != i) {
printf("Unexpected value after offset readv at %i\n",
i*SIZE + j);
status |= 1;
break;
}
}
}
if (!status)
printf("Checking memory: [Success]\n");
return status;
}
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