On Thu, Oct 22, 2020 at 9:40 AM Matthew Wilcox [off-list ref] wrote:
On Thu, Oct 22, 2020 at 04:35:17PM +0000, David Laight wrote:
quoted
Wait...
readv(2) defines:
ssize_t readv(int fd, const struct iovec *iov, int iovcnt);
It doesn't really matter what the manpage says. What does the AOSP
libc header say?
Same: https://android.googlesource.com/platform/bionic/+/refs/heads/master/libc/include/sys/uio.h#38
Theoretically someone could bypass libc to make a system call, right?
quoted
But the syscall is defined as:
SYSCALL_DEFINE3(readv, unsigned long, fd, const struct iovec __user *, vec,
unsigned long, vlen)
{
return do_readv(fd, vec, vlen, 0);
}
--
Thanks,
~Nick Desaulniers