On Mon, 26 Nov 2007 09:19:17 -0600 "Serge E. Hallyn" <[EMAIL PROTECTED]> wrote:

> Quoting Eric W. Biederman ([EMAIL PROTECTED]):
> > 
> > When CONFIG_UTS_NS was removed it seems that we also deleted
> > the code for handling sysctls in the other then the initial
> > uts namespace.   This patch restores that code.
> > 
> > Signed-off-by: Eric W. Biederman <[EMAIL PROTECTED]>
> 
> Thanks, Eric.
> 
> Acked-by: Serge Hallyn <[EMAIL PROTECTED]>
> 
> > ---
> >  kernel/utsname_sysctl.c |    2 ++
> >  1 files changed, 2 insertions(+), 0 deletions(-)
> > 
> > diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c
> > index c76c064..71f58c3 100644
> > --- a/kernel/utsname_sysctl.c
> > +++ b/kernel/utsname_sysctl.c
> > @@ -18,6 +18,8 @@
> >  static void *get_uts(ctl_table *table, int write)
> >  {
> >     char *which = table->data;
> > +   struct uts_namespace *uts_ns = current->nsproxy->uts_ns;
> > +   which = (which - (char *)&init_uts_ns) + (char *)uts_ns;
> > 
> >     if (!write)
> >             down_read(&uts_sem);

I already have a (more codingstylely attractive) version of this from
Pavel, for which I shall steal your ack.

--- 
a/kernel/utsname_sysctl.c~isolate-the-uts-namespaces-domainname-and-hostname-back
+++ a/kernel/utsname_sysctl.c
@@ -18,6 +18,10 @@
 static void *get_uts(ctl_table *table, int write)
 {
        char *which = table->data;
+       struct uts_namespace *uts_ns;
+
+       uts_ns = current->nsproxy->uts_ns;
+       which = (which - (char *)&init_uts_ns) + (char *)uts_ns;
 
        if (!write)
                down_read(&uts_sem);
_


Those pointer tricksies are revolting.  What's going on in there?
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [EMAIL PROTECTED]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Reply via email to