Hi
Thanks,It is exactly what I want.
----- 原邮件 -----
从: Cedric Le Goater <legoa...@free.fr>
日期: 星期二, 十二月 13日, 2011 下午4:10
主题: Re: [lxc-devel] 回复 :Re: How to change to lxc internal PID to
system wide PID
> On 12/13/2011 02:49 AM, yi...@neusoft.com wrote:
> > Hi Gregory Kurz
> >
> > From the google search,SCM_CREDENTIALS contains the PID of
> the
> > sender process,in the sender's
> > PID namespace.
> > So if the lxc App acts as the sender, the PID is 2 which is
> also
> > invalid for the host.
> > (lxc has its own PID namesapce)
> > Correct me if wrong,thanks.
>
> the pid in 'struct ucred' will be translated in the pid namespace of
> the receiving side.
>
> on the host, run the receiving side :
>
>
http://man7.org/tlpi/code/online/dist/sockets/scm_cred_recv.c
.html
>
> $ ./scm_cred_recv
> Receiving via stream socket
> recvmsg() returned 4
> Received data = 12345
> Received credentials pid=20333, uid=1017, gid=100
> Credentials from SO_PEERCRED: pid=20333, euid=1017, egid=100
>
>
> and in an lxc (application) container, run the sending side :
>
>
http://man7.org/tlpi/code/online/dist/sockets/scm_cred_send.c
.html
>
> $ lxc-execute -n foo -- ./scm_cred_send
> Send credentials pid=2, uid=1017, gid=100
> sendmsg() returned 4
>
> Regards,
>
> C.
>
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