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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_DEVPOLICY_H
#define _SYS_DEVPOLICY_H
#include <sys/types.h>
#include <sys/priv.h>
#include <sys/param.h>
#include <sys/vnode.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* Device policy system call interface data structure.
*
* Inside the kernel we only make the structure definition available when the
* privilege set definition is complete, i.e., something included
* <sys/priv_const.h> before including this file.
*/
typedef struct devplcysys devplcysys_t;
#if defined(__PRIV_CONST_IMPL) || !defined(_KERNEL)
struct devplcysys {
major_t dps_maj; /* major number */
minor_t dps_lomin; /* low minor number, if known */
minor_t dps_himin; /* high minor number, if known */
char dps_minornm[MAXNAMELEN]; /* minor name/pattern */
boolean_t dps_isblock; /* expanded device is a block dev */
#ifdef _KERNEL
priv_set_t dps_rdp; /* privileges required for reading */
priv_set_t dps_wrp; /* privileges required for writing */
#else
priv_chunk_t dps_sets[1]; /* read/write privilege sets */
#endif
};
#ifdef _KERNEL
/*
* The actual device policy structure. This is returned on table
* lookups.
*/
struct devplcy {
uint32_t dp_ref; /* Reference count */
uint32_t dp_gen; /* Generation count */
priv_set_t dp_rdp; /* Privileges required for reading */
priv_set_t dp_wrp; /* Privileges required for writing */
};
#endif /* _KERNEL */
#endif /* __PRIV_CONST_IMPL || !_KERNEL */
#ifdef _KERNEL
typedef struct devplcy devplcy_t;
extern devplcy_t *nullpolicy; /* The null policy */
extern volatile uint32_t devplcy_gen; /* The current generation count */
extern devplcy_t *dpget(void);
extern void dphold(devplcy_t *);
extern void dpfree(devplcy_t *);
extern devplcy_t *devpolicy_find(vnode_t *);
extern void devpolicy_init(void);
extern int devpolicy_load(int, size_t, devplcysys_t *);
extern int devpolicy_get(int *, size_t, devplcysys_t *);
extern int devpolicy_getbyname(size_t, devplcysys_t *, char *);
extern devplcy_t *devpolicy_priv_by_name(const char *, const char *);
#else /* _KERNEL */
#define DEVPLCYSYS_SZ(ip) (sizeof (devplcysys_t) + \
((ip)->priv_setsize * 2 - 1) * \
sizeof (priv_chunk_t))
#define DEVPLCYSYS_RDP(dp, ip) ((priv_set_t *)(&(dp)->dps_sets[0]))
#define DEVPLCYSYS_WRP(dp, ip) \
((priv_set_t *)(&(dp)->dps_sets[(ip)->priv_setsize]))
#define DEVPLCY_TKN_RDP "read_priv_set"
#define DEVPLCY_TKN_WRP "write_priv_set"
#endif /* _KERNEL */
#define MAXDEVPOLICY 1000
#define DEVPOLICY_DFLT_MAJ ((major_t)~0)
#ifdef __cplusplus
}
#endif
#endif /* _SYS_DEVPOLICY_H */
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