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| author | Serge E. Hallyn <serge@hallyn.com> | 2011-03-24 02:43:24 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-24 05:47:08 +0300 |
| commit | b0e77598f87107001a00b8a4ece9c95e4254ccc4 (patch) | |
| tree | 2738276570e4faa7c92a64521c192f04dca93801 /kernel/nsproxy.c | |
| parent | b515498f5bb5f38fc0e390b4ff7d00b6077de127 (diff) | |
| download | linux-b0e77598f87107001a00b8a4ece9c95e4254ccc4.tar.xz | |
userns: user namespaces: convert several capable() calls
CAP_IPC_OWNER and CAP_IPC_LOCK can be checked against current_user_ns(),
because the resource comes from current's own ipc namespace.
setuid/setgid are to uids in own namespace, so again checks can be against
current_user_ns().
Changelog:
Jan 11: Use task_ns_capable() in place of sched_capable().
Jan 11: Use nsown_capable() as suggested by Bastian Blank.
Jan 11: Clarify (hopefully) some logic in futex and sched.c
Feb 15: use ns_capable for ipc, not nsown_capable
Feb 23: let copy_ipcs handle setting ipc_ns->user_ns
Feb 23: pass ns down rather than taking it from current
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Serge E. Hallyn <serge.hallyn@canonical.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Daniel Lezcano <daniel.lezcano@free.fr>
Acked-by: David Howells <dhowells@redhat.com>
Cc: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/nsproxy.c')
| -rw-r--r-- | kernel/nsproxy.c | 7 |
1 files changed, 1 insertions, 6 deletions
diff --git a/kernel/nsproxy.c b/kernel/nsproxy.c index ac8a56e90bf8..a05d191ffdd9 100644 --- a/kernel/nsproxy.c +++ b/kernel/nsproxy.c @@ -75,16 +75,11 @@ static struct nsproxy *create_new_namespaces(unsigned long flags, goto out_uts; } - new_nsp->ipc_ns = copy_ipcs(flags, tsk->nsproxy->ipc_ns); + new_nsp->ipc_ns = copy_ipcs(flags, tsk); if (IS_ERR(new_nsp->ipc_ns)) { err = PTR_ERR(new_nsp->ipc_ns); goto out_ipc; } - if (new_nsp->ipc_ns != tsk->nsproxy->ipc_ns) { - put_user_ns(new_nsp->ipc_ns->user_ns); - new_nsp->ipc_ns->user_ns = task_cred_xxx(tsk, user)->user_ns; - get_user_ns(new_nsp->ipc_ns->user_ns); - } new_nsp->pid_ns = copy_pid_ns(flags, task_active_pid_ns(tsk)); if (IS_ERR(new_nsp->pid_ns)) { |