capabilities: intuitive names for cap gain status

		*effective = true;

}

#define __cap_gained(field, target, source) \

	!cap_issubset(target->cap_##field, source->cap_##field)

#define __cap_grew(target, source, cred) \

	!cap_issubset(cred->cap_##target, cred->cap_##source)

#define __cap_full(field, cred) \

	cap_issubset(CAP_FULL_SET, cred->cap_##field)

/**

 * cap_bprm_set_creds - Set up the proposed credentials for execve().

 * @bprm: The execution parameters, including the proposed creds

	handle_privileged_root(bprm, has_cap, &effective, root_uid);

	/* if we have fs caps, clear dangerous personality flags */

	if (!cap_issubset(new->cap_permitted, old->cap_permitted))

	if (__cap_gained(permitted, new, old))

		bprm->per_clear |= PER_CLEAR_ON_SETID;

	/* Don't let someone trace a set[ug]id/setpcap binary with the revised

	 * credentials unless they have the appropriate permit.

	 *

	 */

	is_setid = !uid_eq(new->euid, old->uid) || !gid_eq(new->egid, old->gid);

	if ((is_setid ||

	     !cap_issubset(new->cap_permitted, old->cap_permitted)) &&

	if ((is_setid || __cap_gained(permitted, new, old)) &&

	    ((bprm->unsafe & ~LSM_UNSAFE_PTRACE) ||

	     !ptracer_capable(current, new->user_ns))) {

		/* downgrade; they get no more than they had, and maybe less */

	 * Number 1 above might fail if you don't have a full bset, but I think

	 * that is interesting information to audit.

	 */

	if (!cap_issubset(new->cap_effective, new->cap_ambient)) {

		if (!cap_issubset(CAP_FULL_SET, new->cap_effective) ||

	if (__cap_grew(effective, ambient, new)) {

		if (!__cap_full(effective, new) ||

		    !uid_eq(new->euid, root_uid) || !uid_eq(new->uid, root_uid) ||

		    issecure(SECURE_NOROOT)) {

			ret = audit_log_bprm_fcaps(bprm, new, old);

		bprm->cap_elevated = 1;

	} else if (!uid_eq(new->uid, root_uid)) {

		if (effective ||

		    !cap_issubset(new->cap_permitted, new->cap_ambient))

		    __cap_grew(permitted, ambient, new))

			bprm->cap_elevated = 1;

	}