security/tomoyo/file.c

258 	if (acl->perm & (1 << r->param.path.operation)) {
281 	return (acl->perm & (1 << r->param.path_number.operation)) &&
302 	return (acl->perm & (1 << r->param.path2.operation)) &&
322 	return (acl->perm & (1 << r->param.mkdev.operation)) &&
364 		->perm;
365 	u16 perm = READ_ONCE(*a_perm);
366 	const u16 b_perm = container_of(b, struct tomoyo_path_acl, head)->perm;
369 		perm &= ~b_perm;
371 		perm |= b_perm;
372 	WRITE_ONCE(*a_perm, perm);
373 	return !perm;
379  * @perm:  Permission.
386 static int tomoyo_update_path_acl(const u16 perm,
391 		.perm = perm
439 					 head)->perm;
440 	u8 perm = READ_ONCE(*a_perm);
442 		->perm;
445 		perm &= ~b_perm;
447 		perm |= b_perm;
448 	WRITE_ONCE(*a_perm, perm);
449 	return !perm;
455  * @perm:  Permission.
462 static int tomoyo_update_mkdev_acl(const u8 perm,
467 		.perm = perm
519 		->perm;
520 	u8 perm = READ_ONCE(*a_perm);
521 	const u8 b_perm = container_of(b, struct tomoyo_path2_acl, head)->perm;
524 		perm &= ~b_perm;
526 		perm |= b_perm;
527 	WRITE_ONCE(*a_perm, perm);
528 	return !perm;
534  * @perm:  Permission.
541 static int tomoyo_update_path2_acl(const u8 perm,
546 		.perm = perm
657 					  head)->perm;
658 	u8 perm = READ_ONCE(*a_perm);
660 		->perm;
663 		perm &= ~b_perm;
665 		perm |= b_perm;
666 	WRITE_ONCE(*a_perm, perm);
667 	return !perm;
673  * @perm:  Permission.
678 static int tomoyo_update_path_number_acl(const u8 perm,
683 		.perm = perm
1014 	u16 perm = 0;
1020 			perm |= 1 << type;
1021 	if (perm)
1022 		return tomoyo_update_path_acl(perm, param);
1026 			perm |= 1 << type;
1027 	if (perm)
1028 		return tomoyo_update_path2_acl(perm, param);
1032 			perm |= 1 << type;
1033 	if (perm)
1034 		return tomoyo_update_path_number_acl(perm, param);
1038 			perm |= 1 << type;
1039 	if (perm)
1040 		return tomoyo_update_mkdev_acl(perm, param);