You can test my patch with ip command:
$ sudo ip netns add test
$ sudo ./strace -e'setns' ip netns exec test echo > /dev/null
setns(4, CLONE_NEWNET) = 0
+++ exited with 0 +++
Masatake YAMATO
> * process.c (sys_setns): New function. Use `clone_flags'
> to decode the seconde argument.
>
> * linux/dummy.h (sys_setns): Remove the macro.
>
> Signed-off-by: Masatake YAMATO <yam...@redhat.com>
> ---
> linux/dummy.h | 1 -
> process.c | 11 +++++++++++
> 2 files changed, 11 insertions(+), 1 deletion(-)
>
> diff --git a/linux/dummy.h b/linux/dummy.h
> index 2fc3498..ac844c6 100644
> --- a/linux/dummy.h
> +++ b/linux/dummy.h
> @@ -79,7 +79,6 @@
> #define sys_set_robust_list sys_munmap
> #define sys_setfsgid sys_setfsuid
> #define sys_setgid sys_setuid
> -#define sys_setns sys_inotify_rm_watch
> #define sys_setregid sys_setreuid
> #define sys_setresgid sys_setresuid
> #define sys_swapoff sys_chdir
> diff --git a/process.c b/process.c
> index af203ea..58fef83 100644
> --- a/process.c
> +++ b/process.c
> @@ -585,6 +585,17 @@ sys_clone(struct tcb *tcp)
> }
>
> int
> +sys_setns(struct tcb *tcp)
> +{
> + if (entering(tcp)) {
> + printfd(tcp, tcp->u_arg[0]);
> + tprints(", ");
> + printflags(clone_flags, tcp->u_arg[1], "CLONE_???");
> + }
> + return 0;
> +}
> +
> +int
> sys_unshare(struct tcb *tcp)
> {
> if (entering(tcp))
> --
> 1.9.0
>
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