You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
|
|
#include <stddef.h>
|
|
|
|
|
#include <sys/types.h>
|
|
|
|
|
#include <sys/socket.h>
|
|
|
|
|
#include <sys/uio.h>
|
|
|
|
|
#include <errno.h>
|
|
|
|
|
#include "io_internal.h"
|
|
|
|
|
|
|
|
|
|
union fdmsg {
|
|
|
|
|
struct cmsghdr h;
|
|
|
|
|
/* on NetBSD, CMSG_SPACE is not constant */
|
|
|
|
|
/* char buf[CMSG_SPACE(sizeof(int))]; */
|
|
|
|
|
char buf[1000];
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
int io_passfd(int64 sock,int64 fd) {
|
|
|
|
|
struct msghdr msg = {0};
|
|
|
|
|
struct cmsghdr *cmsg;
|
|
|
|
|
struct iovec iov;
|
|
|
|
|
char buf[CMSG_SPACE(sizeof(int))];
|
|
|
|
|
iov.iov_len=1;
|
|
|
|
|
iov.iov_base="x";
|
|
|
|
|
msg.msg_control = buf;
|
|
|
|
|
msg.msg_controllen = sizeof buf;
|
|
|
|
|
msg.msg_iov=&iov;
|
|
|
|
|
msg.msg_iovlen=1;
|
|
|
|
|
msg.msg_name=0;
|
|
|
|
|
msg.msg_namelen=0;
|
|
|
|
|
cmsg = CMSG_FIRSTHDR(&msg);
|
|
|
|
|
cmsg->cmsg_level = SOL_SOCKET;
|
|
|
|
|
cmsg->cmsg_type = SCM_RIGHTS;
|
|
|
|
|
cmsg->cmsg_len = CMSG_LEN(sizeof(int));
|
|
|
|
|
*((int*)CMSG_DATA(cmsg))=fd;
|
|
|
|
|
msg.msg_controllen = cmsg->cmsg_len;
|
|
|
|
|
return sendmsg(sock,&msg,0)>=0?0:-1;
|
|
|
|
|
}
|
