| /* 4.t |
| - read of descriptor without read permission (4.t) |
| - write to descriptor without write permission (4.t) |
| - check that O_APPEND writes actually append |
| |
| */ |
| #include "aio_setup.h" |
| |
| #define SIZE 512 |
| #define READ 'r' |
| #define WRITE 'w' |
| int attempt(int fd, void *buf, int count, long long pos, int rw, int expect) |
| { |
| struct iocb iocb; |
| int res; |
| |
| switch(rw) { |
| case READ: io_prep_pread (&iocb, fd, buf, count, pos); break; |
| case WRITE: io_prep_pwrite(&iocb, fd, buf, count, pos); break; |
| } |
| |
| printf("expect %3d: (%c), res = ", expect, rw); |
| fflush(stdout); |
| res = sync_submit(&iocb); |
| printf("%3d [%s]%s\n", res, (res <= 0) ? strerror(-res) : "Success", |
| (res != expect) ? " -- FAILED" : ""); |
| if (res != expect) |
| return 1; |
| |
| return 0; |
| } |
| |
| int test_main(void) |
| { |
| char buf[SIZE]; |
| int rofd, wofd, rwfd; |
| int status = 0, res; |
| |
| memset(buf, 0, SIZE); |
| |
| rofd = open("testdir/rofile", O_RDONLY); assert(rofd != -1); |
| wofd = open("testdir/wofile", O_WRONLY); assert(wofd != -1); |
| rwfd = open("testdir/rwfile", O_RDWR); assert(rwfd != -1); |
| |
| status |= attempt(rofd, buf, SIZE, 0, WRITE, -EBADF); |
| status |= attempt(wofd, buf, SIZE, 0, READ, -EBADF); |
| status |= attempt(rwfd, buf, SIZE, 0, WRITE, SIZE); |
| status |= attempt(rwfd, buf, SIZE, 0, READ, SIZE); |
| status |= attempt(rwfd, buf, SIZE, -1, READ, -EINVAL); |
| status |= attempt(rwfd, buf, SIZE, -1, WRITE, -EINVAL); |
| |
| rwfd = open("testdir/rwfile", O_RDWR|O_APPEND); assert(rwfd != -1); |
| res = ftruncate(rwfd, 0); assert(res == 0); |
| status |= attempt(rwfd, buf, SIZE, 0, READ, 0); |
| status |= attempt(rwfd, "1234", 4, 0, WRITE, 4); |
| status |= attempt(rwfd, "5678", 4, 0, WRITE, 4); |
| memset(buf, 0, SIZE); |
| status |= attempt(rwfd, buf, SIZE, 0, READ, 8); |
| printf("read after append: [%s]\n", buf); |
| assert(memcmp(buf, "12345678", 8) == 0); |
| |
| status |= attempt(rwfd, KERNEL_RW_POINTER, SIZE, 0, READ, -EFAULT); |
| status |= attempt(rwfd, KERNEL_RW_POINTER, SIZE, 0, WRITE, -EFAULT); |
| |
| /* Some architectures map the 0 page. Ugh. */ |
| #if !defined(__ia64__) |
| status |= attempt(rwfd, NULL, SIZE, 0, WRITE, -EFAULT); |
| #endif |
| |
| return status; |
| } |
| |