xiaomi-sm8450/android_kernel_xiaomi_sm8450
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[NET]: Add network namespace clone & unshare support.

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This patch allows you to create a new network namespace
using sys_clone, or sys_unshare.

As the network namespace is still experimental and under development
clone and unshare support is only made available when CONFIG_NET_NS is
selected at compile time.

As this patch introduces network namespace support into code paths
that exist when the CONFIG_NET is not selected there are a few
additions made to net_namespace.h to allow a few more functions
to be used when the networking stack is not compiled in.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman
2007-09-26 22:04:26 -07:00
committed by David S. Miller
parent 8b41d1887d
commit 9dd776b6d7
6 changed files with 83 additions and 5 deletions
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3
kernel/fork.c
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@@ -1608,7 +1608,8 @@ asmlinkage long sys_unshare(unsigned long unshare_flags)
err = -EINVAL;
if (unshare_flags & ~(CLONE_THREAD|CLONE_FS|CLONE_NEWNS|CLONE_SIGHAND|
CLONE_VM|CLONE_FILES|CLONE_SYSVSEM|
CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWUSER))
CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWUSER|
CLONE_NEWNET))
goto bad_unshare_out;
if ((err = unshare_thread(unshare_flags)))