lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[PATCH] to nsproxy

Browse Source 
Add the pid namespace framework to the nsproxy object.  The copy of the pid
namespace only increases the refcount on the global pid namespace,
init_pid_ns, and unshare is not implemented.

There is no configuration option to activate or deactivate this feature
because this not relevant for the moment.

Signed-off-by: Cedric Le Goater <clg@fr.ibm.com>
Cc: Kirill Korotaev <dev@openvz.org>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Cedric Le Goater
2006-12-08 02:37:59 -08:00
committed by Linus Torvalds
parent 61a58c6c23
commit 9a575a92db
5 changed files with 64 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
kernel/nsproxy.c
View File

@@ -19,6 +19,7 @@
#include <linux/init_task.h>
#include <linux/mnt_namespace.h>
#include <linux/utsname.h>
#include <linux/pid_namespace.h>
struct nsproxy init_nsproxy = INIT_NSPROXY(init_nsproxy);
@@ -68,6 +69,8 @@ struct nsproxy *dup_namespaces(struct nsproxy *orig)
get_uts_ns(ns->uts_ns);
if (ns->ipc_ns)
get_ipc_ns(ns->ipc_ns);
if (ns->pid_ns)
get_pid_ns(ns->pid_ns);
}
return ns;
@@ -111,10 +114,17 @@ int copy_namespaces(int flags, struct task_struct *tsk)
if (err)
goto out_ipc;
err = copy_pid_ns(flags, tsk);
if (err)
goto out_pid;
out:
put_nsproxy(old_ns);
return err;
out_pid:
if (new_ns->ipc_ns)
put_ipc_ns(new_ns->ipc_ns);
out_ipc:
if (new_ns->uts_ns)
put_uts_ns(new_ns->uts_ns);
@@ -129,11 +139,13 @@ out_ns:
void free_nsproxy(struct nsproxy *ns)
{
if (ns->mnt_ns)
put_mnt_ns(ns->mnt_ns);
if (ns->uts_ns)
put_uts_ns(ns->uts_ns);
if (ns->ipc_ns)
put_ipc_ns(ns->ipc_ns);
kfree(ns);
if (ns->mnt_ns)
put_mnt_ns(ns->mnt_ns);
if (ns->uts_ns)
put_uts_ns(ns->uts_ns);
if (ns->ipc_ns)
put_ipc_ns(ns->ipc_ns);
if (ns->pid_ns)
put_pid_ns(ns->pid_ns);
kfree(ns);
}