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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (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 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_DEVCACHE_IMPL_H
#define _SYS_DEVCACHE_IMPL_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/list.h>
/*
* /etc/devices cache files format
* Leave some padding for easy extension in the future
*/
#define NVPF_HDR_MAGIC 0xdeb1dcac
#define NVPF_HDR_VERSION 1
#define NVPF_HDR_SIZE 128
typedef struct nvpacked_file_hdr {
union {
struct nvfp_hdr {
uint32_t magic;
int32_t version;
int64_t size;
uint16_t hdr_chksum;
uint16_t chksum;
} nvpf;
uchar_t nvpf_pad[NVPF_HDR_SIZE];
} un;
} nvpf_hdr_t;
#define nvpf_magic un.nvpf.magic
#define nvpf_version un.nvpf.version
#define nvpf_size un.nvpf.size
#define nvpf_hdr_chksum un.nvpf.hdr_chksum
#define nvpf_chksum un.nvpf.chksum
#ifdef _KERNEL
/*
* Descriptor used for kernel-level file i/o
*/
typedef struct kfile {
struct vnode *kf_vp;
int kf_vnflags;
char *kf_fname;
offset_t kf_fpos;
int kf_state;
} kfile_t;
/*
* File descriptor for files in the nvlist format
*/
typedef struct nvfiledesc nvfd_t;
/*
* Descriptor for a file managed as a backing store for some
* kernel-generated device state such as device devids,
* vhci-to-phci mapping, etc.
* Each client can manage the data in any form convenient.
* providing functions to unpack (read) and pack (write)
* the data as an nvlist.
*
* Clients should not reference this structure directly
* but through the handle returned when registering.
*/
struct nvfiledesc {
nvf_ops_t *nvf_ops; /* client ops vectors */
int nvf_flags; /* flags */
list_t nvf_data_list; /* data list */
krwlock_t nvf_lock; /* lock for data list */
list_node_t nvf_link; /* link to next file desc */
};
/*
* nvf_flags
*/
#define NVF_F_DIRTY 0x01 /* needs to be flushed */
#define NVF_F_FLUSHING 0x02 /* in process of being flushed */
#define NVF_F_ERROR 0x04 /* most recent flush failed */
#define NVF_F_READONLY 0x10 /* file is read-only */
#define NVF_F_CREATE_MSG 0x20 /* file not found on boot, emit msg */
#define NVF_F_REBUILD_MSG 0x40 /* file was found corrupted, emit msg */
#define NVF_IS_DIRTY(nvfd) ((nvfd)->nvf_flags & NVF_F_DIRTY)
#define NVF_MARK_DIRTY(nvfd) ((nvfd)->nvf_flags |= NVF_F_DIRTY)
#define NVF_CLEAR_DIRTY(nvfd) ((nvfd)->nvf_flags &= ~NVF_F_DIRTY)
#define NVF_IS_READONLY(nvfd) ((nvfd)->nvf_flags & NVF_F_READONLY)
#define NVF_MARK_READONLY(nvfd) ((nvfd)->nvf_flags |= NVF_F_READONLY)
/* shorthand to client ops */
#define nvf_cache_path nvf_ops->nvfr_cache_path
#define nvf_unpack_nvlist nvf_ops->nvfr_unpack_nvlist
#define nvf_pack_list nvf_ops->nvfr_pack_list
#define nvf_list_free nvf_ops->nvfr_list_free
#define nvf_write_complete nvf_ops->nvfr_write_complete
/*
* More thorough error reporting available both debug &
* non-debug kernels, but turned off by default.
*/
extern int kfio_report_error; /* kernel file i/o operations */
/*
* Suffix of temporary file for updates
*/
#define MAX_SUFFIX_LEN 4
#define NEW_FILENAME_SUFFIX "new"
#ifdef DEBUG
#define NVPDAEMON_DEBUG(args) { if (nvpdaemon_debug) cmn_err args; }
#define KFDEBUG(args) { if (kfio_debug) cmn_err args; }
#define KFDEBUG1(args) { if (kfio_debug > 1) cmn_err args; }
#define KFDEBUG2(args) { if (kfio_debug > 2) cmn_err args; }
#define KFDUMP(args) { if (kfio_debug > 2) args; }
#else
#define NVPDAEMON_DEBUG(args)
#define KFDEBUG(args)
#define KFDEBUG1(args)
#define KFDEBUG2(args)
#define KFDUMP(args)
#endif /* DEBUG */
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_DEVCACHE_IMPL_H */
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