On Fri, Feb 12, 2010 at 09:39:12PM +0100, Andreas Schwab wrote:
[...]
> +int
> +sys_recvmmsg(struct tcb *tcp)
> +{
> + if (entering(tcp)) {
> + tprintf("%ld, ", tcp->u_arg[0]);
> + printmmsghdr(tcp, tcp->u_arg[1]);
> + tprintf(", %ld, ", tcp->u_arg[2]);
> + /* flags */
> + printflags(msg_flags, tcp->u_arg[3], "MSG_???");
> + /* timeout */
> + tprintf(", ");
> + print_timespec(tcp, tcp->u_arg[4]);
> + }
> + return 0;
> +}If recvmmsg semantics is similar to recvmsg, then only file descriptor can be decoded on entrance to the syscall, while the mmsghdr structure (and all the rest) -- on exit from the syscall. -- ldv
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