__sys_sendmsg
extern long __sys_sendmsg(int fd, struct user_msghdr __user *msg,
return __sys_sendmsg(fd, (struct user_msghdr __user *)msg,
return __sys_sendmsg(fd, msg, flags, true);
err = __sys_sendmsg(a0, (struct user_msghdr __user *)a1,
extern long __sys_sendmsg(int fd, struct user_msghdr __user *msg,