[libvirt-users] Question about setns recognising in libvirt autoconf
Gao feng
gaofeng at cn.fujitsu.com
Mon Dec 9 06:45:02 UTC 2013
On 12/09/2013 02:29 PM, hzguanqiang at corp.netease.com wrote:
> Hi Gaofeng,
> It seems that I've got the answer.
> In manual page about setns, it said that library support was added to glibc
> in version 2.14 while my libc version is 2.13.
>
Good news :)
> Thanks for help anyway.
>
> On 2013-12-09 13:22 , hzguanqiang at corp.netease.com <mailto:hzguanqiang at corp.netease.com> wrote:
>
> On 2013-12-09 13:18 , Gao feng <mailto:gaofeng at cn.fujitsu.com> wrote:
>
> On 12/09/2013 01:06 PM, hzguanqiang at corp.netease.com wrote:
> > Hi experts,
> >
> > When I test lxc container with lxc-enter-namespace command, It reported an error as
> > following:
> > root at debian:~/github/libvirt# vir lxc-enter-namespace lxc --noseclabel /bin/df -hl
> > error: Cannot get namespaces for 3145: Function not implemented
> >
> > It seems that setns is not supported by my kernel.
> >
> > But from the following info, It seemed the reason is just libvirt/autoconf doesn't
> > recgonise setns.
> > root at debian:~/github/libvirt# grep setns /proc/kallsyms
> > ffffffff8105b78b T SyS_setns
> > ffffffff8105b78b T sys_setns
> > root at debian:~/github/libvirt# ./configure | grep setns
> > checking for setns... no
> >
> > What the problem really is ? How can I fix this problem?
>
> What's the result of grep -R "setns" /usr/include/*
>
>
> Hi Gaofeng,
> The result you want is as following:
>
> root at debian:~/github/libvirt# grep -R "setns" /usr/include/*
> /usr/include/asm-generic/unistd.h:#define __NR_setns 268
> /usr/include/asm-generic/unistd.h:__SYSCALL(__NR_setns, sys_setns)
> /usr/include/x86_64-linux-gnu/bits/syscall.h:#define SYS_setns __NR_setns
> /usr/include/x86_64-linux-gnu/asm/unistd_64.h:#define __NR_setns 308
> /usr/include/x86_64-linux-gnu/asm/unistd_64.h:__SYSCALL(__NR_setns, sys_setns)
> /usr/include/x86_64-linux-gnu/asm/unistd_32.h:#define __NR_setns 346
>
> ------------------
> Best regards!
> GuanQiang
> 13:21:12
>
>
> ------------------
> Best regards!
> GuanQiang
> 14:25:56
More information about the libvirt-users
mailing list