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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright (c) 2018, Joyent, Inc.
*/
#ifndef _SYS_SDEV_PLUGIN_H
#define _SYS_SDEV_PLUGIN_H
/*
* Kernel sdev plugin interface
*/
#ifdef _KERNEL
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/vnode.h>
#endif /* _KERNEL */
#ifdef __cplusplus
extern "C" {
#endif
#ifdef _KERNEL
typedef uintptr_t sdev_plugin_hdl_t;
typedef uintptr_t sdev_ctx_t;
/*
* Valid return values for sdev_plugin_validate_t.
*/
typedef enum sdev_plugin_validate {
SDEV_VTOR_INVALID = -1,
SDEV_VTOR_SKIP = 0,
SDEV_VTOR_VALID = 1,
SDEV_VTOR_STALE = 2
} sdev_plugin_validate_t;
/*
* Valid flags
*/
typedef enum sdev_plugin_flags {
SDEV_PLUGIN_NO_NCACHE = 0x1,
SDEV_PLUGIN_SUBDIR = 0x2
} sdev_plugin_flags_t;
#define SDEV_PLUGIN_FLAGS_MASK 0x3
/*
* Functions a module must implement
*/
typedef sdev_plugin_validate_t (*sp_valid_f)(sdev_ctx_t);
typedef int (*sp_filldir_f)(sdev_ctx_t);
typedef void (*sp_inactive_f)(sdev_ctx_t);
#define SDEV_PLUGIN_VERSION 1
typedef struct sdev_plugin_ops {
int spo_version;
sdev_plugin_flags_t spo_flags;
sp_valid_f spo_validate;
sp_filldir_f spo_filldir;
sp_inactive_f spo_inactive;
} sdev_plugin_ops_t;
extern sdev_plugin_hdl_t sdev_plugin_register(const char *, sdev_plugin_ops_t *,
int *);
extern int sdev_plugin_unregister(sdev_plugin_hdl_t);
typedef enum sdev_ctx_flags {
SDEV_CTX_GLOBAL = 0x2 /* node belongs to the GZ */
} sdev_ctx_flags_t;
/*
* Context helper functions
*/
extern sdev_ctx_flags_t sdev_ctx_flags(sdev_ctx_t);
extern const char *sdev_ctx_name(sdev_ctx_t);
extern const char *sdev_ctx_path(sdev_ctx_t);
extern int sdev_ctx_minor(sdev_ctx_t, minor_t *);
extern enum vtype sdev_ctx_vtype(sdev_ctx_t);
/*
* Callbacks to manipulate nodes
*/
extern int sdev_plugin_mkdir(sdev_ctx_t, char *);
extern int sdev_plugin_mknod(sdev_ctx_t, char *, mode_t, dev_t);
#endif /* _KERNEL */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_SDEV_PLUGIN_H */
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