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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 2008 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 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     30 
     31 #ifdef	__cplusplus
     32 extern "C" {
     33 #endif
     34 
     35 #include <sys/proc.h>
     36 #include <sys/exec.h>
     37 
     38 /*
     39  * All Brands supported by this kernel must use BRAND_VER_1.
     40  */
     41 #define	BRAND_VER_1	1
     42 
     43 /*
     44  * sub-commands to brandsys.
     45  * 1 - 128 are for common commands
     46  * 128+ are available for brand-specific commands.
     47  */
     48 #define	B_REGISTER		1
     49 #define	B_TTYMODES		2
     50 #define	B_ELFDATA		3
     51 #define	B_EXEC_NATIVE		4
     52 #define	B_EXEC_BRAND		5
     53 
     54 /*
     55  * Structure used by zoneadmd to communicate the name of a brand and the
     56  * supporting brand module into the kernel.
     57  */
     58 struct brand_attr {
     59 	char	ba_brandname[MAXNAMELEN];
     60 	char	ba_modname[MAXPATHLEN];
     61 };
     62 
     63 /* What we call the native brand. */
     64 #define	NATIVE_BRAND_NAME	"native"
     65 
     66 #ifdef	_KERNEL
     67 
     68 /* Root for branded zone's native binaries */
     69 #define	NATIVE_ROOT	"/native/"
     70 
     71 struct proc;
     72 struct uarg;
     73 struct brand_mach_ops;
     74 struct intpdata;
     75 struct execa;
     76 
     77 struct brand_ops {
     78 	void	(*b_init_brand_data)(zone_t *);
     79 	void	(*b_free_brand_data)(zone_t *);
     80 	int	(*b_brandsys)(int, int64_t *, uintptr_t, uintptr_t, uintptr_t,
     81 		uintptr_t, uintptr_t, uintptr_t);
     82 	void	(*b_setbrand)(struct proc *);
     83 	int	(*b_getattr)(zone_t *, int, void *, size_t *);
     84 	int	(*b_setattr)(zone_t *, int, void *, size_t);
     85 	void	(*b_copy_procdata)(struct proc *, struct proc *);
     86 	void	(*b_proc_exit)(struct proc *, klwp_t *);
     87 	void	(*b_exec)();
     88 	void	(*b_lwp_setrval)(klwp_t *, int, int);
     89 	int	(*b_initlwp)(klwp_t *);
     90 	void	(*b_forklwp)(klwp_t *, klwp_t *);
     91 	void	(*b_freelwp)(klwp_t *);
     92 	void	(*b_lwpexit)(klwp_t *);
     93 	int	(*b_elfexec)(struct vnode *vp, struct execa *uap,
     94 	    struct uarg *args, struct intpdata *idata, int level,
     95 	    long *execsz, int setid, caddr_t exec_file,
     96 	    struct cred *cred, int brand_action);
     97 };
     98 
     99 /*
    100  * The b_version field must always be the first entry in this struct.
    101  */
    102 typedef struct brand {
    103 	int			b_version;
    104 	char    		*b_name;
    105 	struct brand_ops	*b_ops;
    106 	struct brand_mach_ops	*b_machops;
    107 } brand_t;
    108 
    109 extern brand_t native_brand;
    110 
    111 /*
    112  * Convenience macros
    113  */
    114 #define	lwptolwpbrand(l)	((l)->lwp_brand)
    115 #define	ttolwpbrand(t)		(lwptolwpbrand(ttolwp(t)))
    116 #define	PROC_IS_BRANDED(p)	((p)->p_brand != &native_brand)
    117 #define	ZONE_IS_BRANDED(z)	((z)->zone_brand != &native_brand)
    118 #define	BROP(p)			((p)->p_brand->b_ops)
    119 #define	ZBROP(z)		((z)->zone_brand->b_ops)
    120 #define	BRMOP(p)		((p)->p_brand->b_machops)
    121 
    122 extern void	brand_init();
    123 extern int	brand_register(brand_t *);
    124 extern int	brand_unregister(brand_t *);
    125 extern brand_t	*brand_register_zone(struct brand_attr *);
    126 extern brand_t	*brand_find_name(char *);
    127 extern void	brand_unregister_zone(brand_t *);
    128 extern int	brand_zone_count(brand_t *);
    129 extern void	brand_setbrand(proc_t *);
    130 extern void	brand_clearbrand(proc_t *);
    131 #endif	/* _KERNEL */
    132 
    133 #ifdef	__cplusplus
    134 }
    135 #endif
    136 
    137 #endif	/* _SYS_BRAND_H */
    138