ssize_t
__libc_preadv (int fd, const struct iovec *vector, int count, off_t offset)
{
if (SINGLE_THREAD_P)
return do_preadv (fd, vector, count, offset);
int oldtype = LIBC_CANCEL_ASYNC ();
ssize_t result = do_preadv (fd, vector, count, offset);
LIBC_CANCEL_RESET (oldtype);
return result;
}
SYSCALL_DEFINE5(preadv, unsigned long, fd, const struct iovec __user *, vec,
unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h)
{
loff_t pos = pos_from_hilo(pos_h, pos_l);
return do_preadv(fd, vec, vlen, pos, 0);
}
SYSCALL_DEFINE6(preadv2, unsigned long, fd, const struct iovec __user *, vec,
unsigned long, vlen, unsigned long, pos_l, unsigned long, pos_h,
int, flags)
{
loff_t pos = pos_from_hilo(pos_h, pos_l);
if (pos == -1)
return do_readv(fd, vec, vlen, flags);
return do_preadv(fd, vec, vlen, pos, flags);
}
static int
do_pread(
int fd,
off64_t offset,
ssize_t count,
ssize_t buffer_size)
{
if (!vectors)
return pread64(fd, buffer, min(count, buffer_size), offset);
return do_preadv(fd, offset, count, buffer_size);
}
