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Infrastructure management of the cred security blob

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Move management of the cred security blob out of the
security modules and into the security infrastructre.
Instead of allocating and freeing space the security
modules tell the infrastructure how much space they
require.

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
[kees: adjusted for ordered init series]
Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Casey Schaufler
2018-11-12 09:30:56 -08:00
committed by Kees Cook
parent 43fc460907
commit bbd3662a83
11 changed files with 162 additions and 102 deletions
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4
security/selinux/include/objsec.h
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@@ -25,6 +25,7 @@
#include <linux/binfmts.h>
#include <linux/in.h>
#include <linux/spinlock.h>
#include <linux/lsm_hooks.h>
#include <net/net_namespace.h>
#include "flask.h"
#include "avc.h"
@@ -158,9 +159,10 @@ struct bpf_security_struct {
u32 sid; /*SID of bpf obj creater*/
};
extern struct lsm_blob_sizes selinux_blob_sizes;
static inline struct task_security_struct *selinux_cred(const struct cred *cred)
{
return cred->security;
return cred->security + selinux_blob_sizes.lbs_cred;
}
#endif /* _SELINUX_OBJSEC_H_ */