See also src/vnet/unix/tuntap.c, which seems to already do pretty much what
you’re describing. It’s disabled by default. Use the command-line argument
“tuntap { enable }” to kick the tires.
In addition to the concerns which Chris mentioned, adding ‘system(“foo”)’ calls
to vpp is not a security best practice.
Thanks… Dave
From: vpp-dev-boun...@lists.fd.io [mailto:vpp-dev-boun...@lists.fd.io] On
Behalf Of Luke, Chris
Sent: Tuesday, February 28, 2017 7:18 AM
To: yug...@telincn.com; Ed Warnicke <hagb...@gmail.com>
Cc: vpp-dev <vpp-dev@lists.fd.io>
Subject: Re: [vpp-dev] system func in vpp
Using any syscall needs thinking through from inside VPP. Using system() or
similar is simply ill-advised; what you’re doing is best done outside of VPP
where the penalty of executing fork() is much diminished.
If you really must create these interfaces from inside VPP then I suggest you
look up the netlink ABI in Linux, which is what the ‘ip’ program uses, and
program it directly.
Chris.
From: vpp-dev-boun...@lists.fd.io<mailto:vpp-dev-boun...@lists.fd.io>
[mailto:vpp-dev-boun...@lists.fd.io] On Behalf Of
yug...@telincn.com<mailto:yug...@telincn.com>
Sent: Monday, February 27, 2017 22:56
To: Ed Warnicke <hagb...@gmail.com<mailto:hagb...@gmail.com>>
Cc: vpp-dev <vpp-dev@lists.fd.io<mailto:vpp-dev@lists.fd.io>>
Subject: Re: [vpp-dev] system func in vpp
I would like to add veth interface in vpp for every phy interface, " system("ip
link add vpp type veth peer name kernel-vpp") ".
It's convenient to do this from vpp.
Regards,
Ewan.
________________________________
yug...@telincn.com<mailto:yug...@telincn.com>
From: Ed Warnicke<mailto:hagb...@gmail.com>
Date: 2017-02-28 11:44
To: yug...@telincn.com<mailto:yug...@telincn.com>
CC: vpp-dev<mailto:vpp-dev@lists.fd.io>
Subject: Re: Re: [vpp-dev] system func in vpp
Why would you do that from within vpp?
Ed
On Mon, Feb 27, 2017 at 8:36 PM, yug...@telincn.com<mailto:yug...@telincn.com>
<yug...@telincn.com<mailto:yug...@telincn.com>> wrote:
"int system(const char *command)"
I would like to use this func to start another dameon , such as "
system("zebra -d") ".
Regards,
Ewan
________________________________
yug...@telincn.com<mailto:yug...@telincn.com>
From: Ed Warnicke<mailto:hagb...@gmail.com>
Date: 2017-02-28 11:15
To: yug...@telincn.com<mailto:yug...@telincn.com>
CC: vpp-dev<mailto:vpp-dev@lists.fd.io>
Subject: Re: [vpp-dev] system func in vpp
I'm not quite sure what you mean by the 'func system'...
Ed
On Mon, Feb 27, 2017 at 7:26 PM, yug...@telincn.com<mailto:yug...@telincn.com>
<yug...@telincn.com<mailto:yug...@telincn.com>> wrote:
Hi, all
Does vpp can't use func system? Any reason to this or what can i do if i
really need ?
________________________________
yug...@telincn.com<mailto:yug...@telincn.com>
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