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authorCedric Le Goater <clg@fr.ibm.com>2007-07-16 02:40:59 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-16 12:05:47 -0400
commitacce292c82d4d82d35553b928df2b0597c3a9c78 (patch)
tree464288f40db9c254da214c400d0880ee50dc37f3 /include/linux/init_task.h
parent7d69a1f4a72b18876c99c697692b78339d491568 (diff)
user namespace: add the framework
Basically, it will allow a process to unshare its user_struct table, resetting at the same time its own user_struct and all the associated accounting. A new root user (uid == 0) is added to the user namespace upon creation. Such root users have full privileges and it seems that theses privileges should be controlled through some means (process capabilities ?) The unshare is not included in this patch. Changes since [try #4]: - Updated get_user_ns and put_user_ns to accept NULL, and get_user_ns to return the namespace. Changes since [try #3]: - moved struct user_namespace to files user_namespace.{c,h} Changes since [try #2]: - removed struct user_namespace* argument from find_user() Changes since [try #1]: - removed struct user_namespace* argument from find_user() - added a root_user per user namespace Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Acked-by: Pavel Emelianov <xemul@openvz.org> Cc: Herbert Poetzl <herbert@13thfloor.at> Cc: Kirill Korotaev <dev@sw.ru> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Chris Wright <chrisw@sous-sol.org> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: James Morris <jmorris@namei.org> Cc: Andrew Morgan <agm@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/init_task.h')
-rw-r--r--include/linux/init_task.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 276ccaa2670c..cab741c2d603 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -8,6 +8,7 @@
8#include <linux/lockdep.h> 8#include <linux/lockdep.h>
9#include <linux/ipc.h> 9#include <linux/ipc.h>
10#include <linux/pid_namespace.h> 10#include <linux/pid_namespace.h>
11#include <linux/user_namespace.h>
11 12
12#define INIT_FDTABLE \ 13#define INIT_FDTABLE \
13{ \ 14{ \
@@ -78,6 +79,7 @@ extern struct nsproxy init_nsproxy;
78 .uts_ns = &init_uts_ns, \ 79 .uts_ns = &init_uts_ns, \
79 .mnt_ns = NULL, \ 80 .mnt_ns = NULL, \
80 INIT_IPC_NS(ipc_ns) \ 81 INIT_IPC_NS(ipc_ns) \
82 .user_ns = &init_user_ns, \
81} 83}
82 84
83#define INIT_SIGHAND(sighand) { \ 85#define INIT_SIGHAND(sighand) { \