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selinux: wrap global selinux state

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Define a selinux state structure (struct selinux_state) for
global SELinux state and pass it explicitly to all security server
functions.  The public portion of the structure contains state
that is used throughout the SELinux code, such as the enforcing mode.
The structure also contains a pointer to a selinux_ss structure whose
definition is private to the security server and contains security
server specific state such as the policy database and SID table.

This change should have no effect on SELinux behavior or APIs
(userspace or LSM).  It merely wraps SELinux state and passes it
explicitly as needed.

Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
[PM: minor fixups needed due to collisions with the SCTP patches]
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Stephen Smalley
2018-03-01 18:48:02 -05:00
committed by Paul Moore
parent 2572f5b424
commit aa8e712cee
25 changed files with 1157 additions and 799 deletions
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11
security/selinux/include/conditional.h
View File

@@ -13,10 +13,15 @@
#ifndef _SELINUX_CONDITIONAL_H_
#define _SELINUX_CONDITIONAL_H_
int security_get_bools(int *len, char ***names, int **values);
#include "security.h"
int security_set_bools(int len, int *values);
int security_get_bools(struct selinux_state *state,
int *len, char ***names, int **values);
int security_get_bool_value(int index);
int security_set_bools(struct selinux_state *state,
int len, int *values);
int security_get_bool_value(struct selinux_state *state,
int index);
#endif