kernel-hacking-2024-linux-s.../security
Serge E. Hallyn 8409cca705 userns: allow ptrace from non-init user namespaces
ptrace is allowed to tasks in the same user namespace according to the
usual rules (i.e.  the same rules as for two tasks in the init user
namespace).  ptrace is also allowed to a user namespace to which the
current task the has CAP_SYS_PTRACE capability.

Changelog:
	Dec 31: Address feedback by Eric:
		. Correct ptrace uid check
		. Rename may_ptrace_ns to ptrace_capable
		. Also fix the cap_ptrace checks.
	Jan  1: Use const cred struct
	Jan 11: use task_ns_capable() in place of ptrace_capable().
	Feb 23: same_or_ancestore_user_ns() was not an appropriate
		check to constrain cap_issubset.  Rather, cap_issubset()
		only is meaningful when both capsets are in the same
		user_ns.

Signed-off-by: Serge E. Hallyn <serge.hallyn@canonical.com>
Cc: "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>
2011-03-23 19:47:05 -07:00
..
apparmor userns: security: make capabilities relative to the user namespace 2011-03-23 19:47:02 -07:00
integrity/ima
keys KEYS: Add an iovec version of KEYCTL_INSTANTIATE 2011-03-08 11:17:22 +11:00
selinux userns: security: make capabilities relative to the user namespace 2011-03-23 19:47:02 -07:00
smack Merge branch 'master' of git://git.infradead.org/users/eparis/selinux into next 2011-03-08 11:38:10 +11:00
tomoyo
capability.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6 2011-03-16 16:29:25 -07:00
commoncap.c userns: allow ptrace from non-init user namespaces 2011-03-23 19:47:05 -07:00
device_cgroup.c
inode.c
Kconfig
lsm_audit.c
Makefile
min_addr.c
security.c userns: security: make capabilities relative to the user namespace 2011-03-23 19:47:02 -07:00