netdev - Re: [PATCH iproute2 v3] ip: Simplify executing ip cmd within network ns

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Date:	Thu, 11 Dec 2014 17:26:40 -0800
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Vadim Kochan <vadim4j@...il.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH iproute2 v3] ip: Simplify executing ip cmd within
 network ns

On Fri, 12 Dec 2014 00:32:51 +0200
Vadim Kochan <vadim4j@...il.com> wrote:

> +
> +#define NETNS_RUN_DIR "/var/run/netns"
> +#define NETNS_ETC_DIR "/etc/netns"
> +
> +#ifndef CLONE_NEWNET
> +#define CLONE_NEWNET 0x40000000	/* New network namespace (lo, device, names sockets, etc) */
> +#endif
> +
> +#ifndef MNT_DETACH
> +#define MNT_DETACH	0x00000002	/* Just detach from the tree */
> +#endif /* MNT_DETACH */
> +
> +/* sys/mount.h may be out too old to have these */
> +#ifndef MS_REC
> +#define MS_REC		16384
> +#endif
> +
> +#ifndef MS_SLAVE
> +#define MS_SLAVE	(1 << 19)
> +#endif
> +
> +#ifndef MS_SHARED
> +#define MS_SHARED	(1 << 20)
> +#endif
> +
> +extern int netns_switch(char *netns);
> +

Maybe it would be cleaner to introduce a new file netns.h
with this and the setnetns syscall wrapper

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