1 files changed, 106 insertions, 0 deletions
diff --git a/usr/src/uts/common/sys/fs/sdev_plugin.h b/usr/src/uts/common/sys/fs/sdev_plugin.h
new file mode 100644
index 0000000000..8783df58e6
--- /dev/null
+++ b/usr/src/uts/common/sys/fs/sdev_plugin.h
@@ -0,0 +1,106 @@
+/*
+ * 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) 2014 Joyent, Inc.  All rights reserved.
+ */
+
+#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 enum vtype sdev_ctx_vtype(sdev_ctx_t);
+extern const void *sdev_ctx_vtype_data(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 */