linux/security/selinux/ss
Stephen Smalley 2651225b5e selinux: wrap cgroup seclabel support with its own policy capability
commit 1ea0ce4069 ("selinux: allow
changing labels for cgroupfs") broke the Android init program,
which looks up security contexts whenever creating directories
and attempts to assign them via setfscreatecon().
When creating subdirectories in cgroup mounts, this would previously
be ignored since cgroup did not support userspace setting of security
contexts.  However, after the commit, SELinux would attempt to honor
the requested context on cgroup directories and fail due to permission
denial.  Avoid breaking existing userspace/policy by wrapping this change
with a conditional on a new cgroup_seclabel policy capability.  This
preserves existing behavior until/unless a new policy explicitly enables
this capability.

Reported-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
2017-03-02 10:27:40 +11:00
..
avtab.c selinux: extended permissions for ioctls 2015-07-13 13:31:58 -04:00
avtab.h selinux: extended permissions for ioctls 2015-07-13 13:31:58 -04:00
conditional.c selinux: fix overflow and 0 length allocations 2016-08-30 15:45:50 -04:00
conditional.h selinux: extended permissions for ioctls 2015-07-13 13:31:58 -04:00
constraint.h SELinux: Update policy version to support constraints info 2013-11-19 17:34:23 -05:00
context.h SELinux: allow default source/target selectors for user/role/range 2012-04-09 12:22:47 -04:00
ebitmap.c lib/vsprintf.c: remove %Z support 2017-02-27 18:43:47 -08:00
ebitmap.h netlabel: shorter names for the NetLabel catmap funcs/structs 2014-08-01 11:17:37 -04:00
hashtab.c selinux: conditionally reschedule in hashtab_insert while loading selinux policy 2014-05-15 17:07:55 -04:00
hashtab.h
mls_types.h SELinux: Reduce overhead of mls_level_isvalid() function call 2013-07-25 13:02:18 -04:00
mls.c selinux: reconcile security_netlbl_secattr_to_sid() and mls_import_netlbl_cat() 2015-04-06 20:15:55 -04:00
mls.h doc: Update the email address for Paul Moore in various source files 2011-08-01 17:58:33 -07:00
policydb.c lib/vsprintf.c: remove %Z support 2017-02-27 18:43:47 -08:00
policydb.h SELinux: Update policy version to support constraints info 2013-11-19 17:34:23 -05:00
services.c selinux: wrap cgroup seclabel support with its own policy capability 2017-03-02 10:27:40 +11:00
services.h selinux: extended permissions for ioctls 2015-07-13 13:31:58 -04:00
sidtab.c selinux: cache sidtab_context_to_sid results 2010-12-07 16:44:01 -05:00
sidtab.h selinux: cache sidtab_context_to_sid results 2010-12-07 16:44:01 -05:00
status.c selinux: fix up style problem on /selinux/status 2010-10-21 10:12:41 +11:00
symtab.c selinux: fix error codes in symtab_init() 2010-08-02 15:35:04 +10:00
symtab.h