[PATCH] namespaces: add nsproxy

This patch adds a nsproxy structure to the task struct.  Later patches will
move the fs namespace pointer into this structure, and introduce a new utsname
namespace into the nsproxy.

The vserver and openvz functionality, then, would be implemented in large part
by virtualizing/isolating more and more resources into namespaces, each
contained in the nsproxy.

[akpm@osdl.org: build fix]
Signed-off-by: Serge Hallyn <serue@us.ibm.com>
Cc: Kirill Korotaev <dev@openvz.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Andrey Savochkin <saw@sw.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 60aac2cea0cf..8f8bb422a5c7 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -68,6 +68,12 @@
         .session        = 1,                                            \
 }
 
+extern struct nsproxy init_nsproxy;
+#define INIT_NSPROXY(nsproxy) {                                         \
+        .count          = ATOMIC_INIT(1),                               \
+        .nslock         = SPIN_LOCK_UNLOCKED,                           \
+}
+
 #define INIT_SIGHAND(sighand) {                                         \
         .count          = ATOMIC_INIT(1),                               \
         .action         = { { { .sa_handler = NULL, } }, },             \
@@ -117,6 +123,7 @@ extern struct group_info init_groups;
         .files          = &init_files,                                  \
         .signal         = &init_signals,                                \
         .sighand        = &init_sighand,                                \
+        .nsproxy        = &init_nsproxy,                                \
         .pending        = {                                             \
                 .list = LIST_HEAD_INIT(tsk.pending.list),               \
                 .signal = {{0}}},                                       \