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authorCedric Le Goater <clg@fr.ibm.com>2007-07-15 23:40:59 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-16 09:05:47 -0700
commitacce292c82d4d82d35553b928df2b0597c3a9c78 (patch)
tree464288f40db9c254da214c400d0880ee50dc37f3 /init
parent7d69a1f4a72b18876c99c697692b78339d491568 (diff)
downloadlinux-acce292c82d4d82d35553b928df2b0597c3a9c78.tar.gz
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 'init')
-rw-r--r--init/Kconfig9
1 files changed, 9 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig
index 1e198b8c693..0b0e29ed82d 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -209,6 +209,15 @@ config TASK_IO_ACCOUNTING
Say N if unsure.
+config USER_NS
+ bool "User Namespaces (EXPERIMENTAL)"
+ default n
+ depends on EXPERIMENTAL
+ help
+ Support user namespaces. This allows containers, i.e.
+ vservers, to use user namespaces to provide different
+ user info for different servers. If unsure, say N.
+
config AUDIT
bool "Auditing support"
depends on NET