brand.h revision 11970:9c3f3660b754 
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#ifndef _SYS_BRAND_H
28#define	_SYS_BRAND_H
29
30#ifdef	__cplusplus
31extern "C" {
32#endif
33
34#include <sys/proc.h>
35#include <sys/exec.h>
36
37/*
38 * All Brands supported by this kernel must use BRAND_VER_1.
39 */
40#define	BRAND_VER_1	1
41
42/*
43 * sub-commands to brandsys.
44 * 1 - 128 are for common commands
45 * 128+ are available for brand-specific commands.
46 */
47#define	B_REGISTER		1
48#define	B_TTYMODES		2
49#define	B_ELFDATA		3
50#define	B_EXEC_NATIVE		4
51#define	B_EXEC_BRAND		5
52
53/*
54 * Structure used by zoneadmd to communicate the name of a brand and the
55 * supporting brand module into the kernel.
56 */
57struct brand_attr {
58	char	ba_brandname[MAXNAMELEN];
59	char	ba_modname[MAXPATHLEN];
60};
61
62/* What we call the native brand. */
63#define	NATIVE_BRAND_NAME	"native"
64
65/* What we call the labeled brand. */
66#define	LABELED_BRAND_NAME	"labeled"
67
68#ifdef	_KERNEL
69
70/* Root for branded zone's native binaries */
71#define	NATIVE_ROOT	"/native/"
72
73struct proc;
74struct uarg;
75struct brand_mach_ops;
76struct intpdata;
77struct execa;
78
79struct brand_ops {
80	void	(*b_init_brand_data)(zone_t *);
81	void	(*b_free_brand_data)(zone_t *);
82	int	(*b_brandsys)(int, int64_t *, uintptr_t, uintptr_t, uintptr_t,
83		uintptr_t, uintptr_t, uintptr_t);
84	void	(*b_setbrand)(struct proc *);
85	int	(*b_getattr)(zone_t *, int, void *, size_t *);
86	int	(*b_setattr)(zone_t *, int, void *, size_t);
87	void	(*b_copy_procdata)(struct proc *, struct proc *);
88	void	(*b_proc_exit)(struct proc *, klwp_t *);
89	void	(*b_exec)();
90	void	(*b_lwp_setrval)(klwp_t *, int, int);
91	int	(*b_initlwp)(klwp_t *);
92	void	(*b_forklwp)(klwp_t *, klwp_t *);
93	void	(*b_freelwp)(klwp_t *);
94	void	(*b_lwpexit)(klwp_t *);
95	int	(*b_elfexec)(struct vnode *vp, struct execa *uap,
96	    struct uarg *args, struct intpdata *idata, int level,
97	    long *execsz, int setid, caddr_t exec_file,
98	    struct cred *cred, int brand_action);
99	void	(*b_sigset_native_to_brand)(sigset_t *);
100	void	(*b_sigset_brand_to_native)(sigset_t *);
101	int	b_nsig;
102};
103
104/*
105 * The b_version field must always be the first entry in this struct.
106 */
107typedef struct brand {
108	int			b_version;
109	char    		*b_name;
110	struct brand_ops	*b_ops;
111	struct brand_mach_ops	*b_machops;
112} brand_t;
113
114extern brand_t native_brand;
115
116/*
117 * Convenience macros
118 */
119#define	lwptolwpbrand(l)	((l)->lwp_brand)
120#define	ttolwpbrand(t)		(lwptolwpbrand(ttolwp(t)))
121#define	PROC_IS_BRANDED(p)	((p)->p_brand != &native_brand)
122#define	ZONE_IS_BRANDED(z)	((z)->zone_brand != &native_brand)
123#define	BROP(p)			((p)->p_brand->b_ops)
124#define	ZBROP(z)		((z)->zone_brand->b_ops)
125#define	BRMOP(p)		((p)->p_brand->b_machops)
126#define	SIGSET_NATIVE_TO_BRAND(sigset)				\
127	if (PROC_IS_BRANDED(curproc) &&				\
128	    BROP(curproc)->b_sigset_native_to_brand)		\
129		BROP(curproc)->b_sigset_native_to_brand(sigset)
130#define	SIGSET_BRAND_TO_NATIVE(sigset)				\
131	if (PROC_IS_BRANDED(curproc) &&				\
132	    BROP(curproc)->b_sigset_brand_to_native)		\
133		BROP(curproc)->b_sigset_brand_to_native(sigset)
134
135extern void	brand_init();
136extern int	brand_register(brand_t *);
137extern int	brand_unregister(brand_t *);
138extern brand_t	*brand_register_zone(struct brand_attr *);
139extern brand_t	*brand_find_name(char *);
140extern void	brand_unregister_zone(brand_t *);
141extern int	brand_zone_count(brand_t *);
142extern void	brand_setbrand(proc_t *);
143extern void	brand_clearbrand(proc_t *);
144#endif	/* _KERNEL */
145
146#ifdef	__cplusplus
147}
148#endif
149
150#endif	/* _SYS_BRAND_H */
151