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      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  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 #ifndef _SYS_BRAND_H
     27 #define	_SYS_BRAND_H
     28 
     29 #ifdef	__cplusplus
     30 extern "C" {
     31 #endif
     32 
     33 #include <sys/proc.h>
     34 #include <sys/exec.h>
     35 
     36 /*
     37  * All Brands supported by this kernel must use BRAND_VER_1.
     38  */
     39 #define	BRAND_VER_1	1
     40 
     41 /*
     42  * sub-commands to brandsys.
     43  * 1 - 128 are for common commands
     44  * 128+ are available for brand-specific commands.
     45  */
     46 #define	B_REGISTER		1
     47 #define	B_TTYMODES		2
     48 #define	B_ELFDATA		3
     49 #define	B_EXEC_NATIVE		4
     50 #define	B_EXEC_BRAND		5
     51 
     52 /*
     53  * Structure used by zoneadmd to communicate the name of a brand and the
     54  * supporting brand module into the kernel.
     55  */
     56 struct brand_attr {
     57 	char	ba_brandname[MAXNAMELEN];
     58 	char	ba_modname[MAXPATHLEN];
     59 };
     60 
     61 /* What we call the native brand. */
     62 #define	NATIVE_BRAND_NAME	"native"
     63 
     64 /* What we call the labeled brand. */
     65 #define	LABELED_BRAND_NAME	"labeled"
     66 
     67 #ifdef	_KERNEL
     68 
     69 /* Root for branded zone's native binaries */
     70 #define	NATIVE_ROOT	"/native/"
     71 
     72 struct proc;
     73 struct uarg;
     74 struct brand_mach_ops;
     75 struct intpdata;
     76 struct execa;
     77 
     78 struct brand_ops {
     79 	void	(*b_init_brand_data)(zone_t *);
     80 	void	(*b_free_brand_data)(zone_t *);
     81 	int	(*b_brandsys)(int, int64_t *, uintptr_t, uintptr_t, uintptr_t,
     82 		uintptr_t, uintptr_t, uintptr_t);
     83 	void	(*b_setbrand)(struct proc *);
     84 	int	(*b_getattr)(zone_t *, int, void *, size_t *);
     85 	int	(*b_setattr)(zone_t *, int, void *, size_t);
     86 	void	(*b_copy_procdata)(struct proc *, struct proc *);
     87 	void	(*b_proc_exit)(struct proc *, klwp_t *);
     88 	void	(*b_exec)();
     89 	void	(*b_lwp_setrval)(klwp_t *, int, int);
     90 	int	(*b_initlwp)(klwp_t *);
     91 	void	(*b_forklwp)(klwp_t *, klwp_t *);
     92 	void	(*b_freelwp)(klwp_t *);
     93 	void	(*b_lwpexit)(klwp_t *);
     94 	int	(*b_elfexec)(struct vnode *vp, struct execa *uap,
     95 	    struct uarg *args, struct intpdata *idata, int level,
     96 	    long *execsz, int setid, caddr_t exec_file,
     97 	    struct cred *cred, int brand_action);
     98 };
     99 
    100 /*
    101  * The b_version field must always be the first entry in this struct.
    102  */
    103 typedef struct brand {
    104 	int			b_version;
    105 	char    		*b_name;
    106 	struct brand_ops	*b_ops;
    107 	struct brand_mach_ops	*b_machops;
    108 } brand_t;
    109 
    110 extern brand_t native_brand;
    111 
    112 /*
    113  * Convenience macros
    114  */
    115 #define	lwptolwpbrand(l)	((l)->lwp_brand)
    116 #define	ttolwpbrand(t)		(lwptolwpbrand(ttolwp(t)))
    117 #define	PROC_IS_BRANDED(p)	((p)->p_brand != &native_brand)
    118 #define	ZONE_IS_BRANDED(z)	((z)->zone_brand != &native_brand)
    119 #define	BROP(p)			((p)->p_brand->b_ops)
    120 #define	ZBROP(z)		((z)->zone_brand->b_ops)
    121 #define	BRMOP(p)		((p)->p_brand->b_machops)
    122 
    123 extern void	brand_init();
    124 extern int	brand_register(brand_t *);
    125 extern int	brand_unregister(brand_t *);
    126 extern brand_t	*brand_register_zone(struct brand_attr *);
    127 extern brand_t	*brand_find_name(char *);
    128 extern void	brand_unregister_zone(brand_t *);
    129 extern int	brand_zone_count(brand_t *);
    130 extern void	brand_setbrand(proc_t *);
    131 extern void	brand_clearbrand(proc_t *);
    132 #endif	/* _KERNEL */
    133 
    134 #ifdef	__cplusplus
    135 }
    136 #endif
    137 
    138 #endif	/* _SYS_BRAND_H */
    139