linux/security/selinux
Paul Moore eb1231f73c selinux: clarify task subjective and objective credentials
SELinux has a function, task_sid(), which returns the task's
objective credentials, but unfortunately is used in a few places
where the subjective task credentials should be used.  Most notably
in the new security_task_getsecid_subj() LSM hook.

This patch fixes this and attempts to make things more obvious by
introducing a new function, task_sid_subj(), and renaming the
existing task_sid() function to task_sid_obj().

This patch also adds an interesting function in task_sid_binder().
The task_sid_binder() function has a comment which hopefully
describes it's reason for being, but it basically boils down to the
simple fact that we can't safely access another task's subjective
credentials so in the case of binder we need to stick with the
objective credentials regardless.

Reviewed-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
2021-03-22 15:24:01 -04:00
..
include selinux: fix misspellings using codespell tool 2021-03-08 19:46:33 -05:00
ss selinux: fix misspellings using codespell tool 2021-03-08 19:44:30 -05:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
avc.c selinux: mark some global variables __ro_after_init 2021-01-12 10:08:55 -05:00
hooks.c selinux: clarify task subjective and objective credentials 2021-03-22 15:24:01 -04:00
ibpkey.c selinux: remove unused global variables 2021-01-12 09:49:01 -05:00
ima.c selinux: measure state and policy capabilities 2021-03-08 19:39:07 -05:00
Kconfig Documentation,selinux: deprecate setting checkreqprot to 1 2020-02-10 10:49:01 -05:00
Makefile selinux: include a consumer of the new IMA critical data hook 2021-01-14 23:41:46 -05:00
netif.c selinux: remove unused global variables 2021-01-12 09:49:01 -05:00
netlabel.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
netlink.c selinux: mark some global variables __ro_after_init 2021-01-12 10:08:55 -05:00
netnode.c selinux: remove unused global variables 2021-01-12 09:49:01 -05:00
netport.c selinux: remove unused global variables 2021-01-12 09:49:01 -05:00
nlmsgtab.c net: bridge: vlan: add rtm definitions and dump support 2020-01-15 13:48:17 +01:00
selinuxfs.c selinux: measure state and policy capabilities 2021-03-08 19:39:07 -05:00
status.c selinux: move status variables out of selinux_ss 2020-02-10 10:49:01 -05:00
xfrm.c selinux: mark selinux_xfrm_refcount as __read_mostly 2021-01-12 10:12:58 -05:00