1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
/* 4.t
- read of descriptor without read permission (4.t)
- write to descriptor without write permission (4.t)
*/
#include "aio_setup.h"
#define SIZE 512
#define READ 'r'
#define WRITE 'w'
int attempt(int fd, int rw, int expect)
{
char buf[SIZE];
struct iocb iocb;
int res;
memset(buf, 0, SIZE);
switch(rw) {
case READ: io_prep_pread (&iocb, fd, buf, SIZE, 0); break;
case WRITE: io_prep_pwrite(&iocb, fd, buf, SIZE, 0); break;
}
printf("expect %3d: (%c), res = ", expect, rw);
fflush(stdout);
res = sync_submit(&iocb);
printf("%3d [%s]\n", res, (res <= 0) ? strerror(-res) : "Success");
if (res != expect)
return 1;
return 0;
}
int test_main(void)
{
int rofd, wofd, rwfd;
int status = 0;
rofd = open("rofile", O_RDONLY); assert(rofd != -1);
wofd = open("wofile", O_WRONLY); assert(wofd != -1);
rwfd = open("rwfile", O_RDWR); assert(rwfd != -1);
status |= attempt(rofd, WRITE, -EBADF);
status |= attempt(wofd, READ, -EBADF);
status |= attempt(rwfd, WRITE, SIZE);
status |= attempt(rwfd, READ, SIZE);
return status;
}
|
