OpenZFS 6939 - add sysevents to zfs core for commands

Authored by: Dave Eddy <[email protected]>
Reviewed by: Patrick Mooney <[email protected]>
Reviewed by: Joshua M. Clulow <[email protected]>
Reviewed by: Josh Wilsdon <[email protected]>
Reviewed by: Matthew Ahrens <[email protected]>
Reviewed by: George Wilson <[email protected]>
Reviewed by: Richard Elling <[email protected]>
Reviewed by: Alan Somers <[email protected]>
Reviewed by: Andrew Stormont <[email protected]>
Approved by: Matthew Ahrens <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Reviewed-by: George Melikov <[email protected]>
Ported-by: Giuseppe Di Natale <[email protected]>

OpenZFS-issue: https://www.illumos.org/issues/6939
OpenZFS-commit: https://github.com/openzfs/openzfs/commit/ce1577b
Closes #6328

5 files changed, 51 insertions, 3 deletions

diff --git a/include/sys/fm/util.h b/include/sys/fm/util.h
index 6ee31764b..ff54b05bb 100644
--- a/include/sys/fm/util.h
+++ b/include/sys/fm/util.h
@@ -93,6 +93,7 @@ typedef struct zfs_zevent {
 extern void fm_init(void);
 extern void fm_fini(void);
 extern void fm_nvprint(nvlist_t *);
+extern void zfs_zevent_post_cb(nvlist_t *nvl, nvlist_t *detector);
 extern int zfs_zevent_post(nvlist_t *, nvlist_t *, zevent_cb_t *);
 extern void zfs_zevent_drain_all(int *);
 extern int zfs_zevent_fd_hold(int, minor_t *, zfs_zevent_t **);
diff --git a/include/sys/fs/zfs.h b/include/sys/fs/zfs.h
index b634635c8..9fbcfbef3 100644
--- a/include/sys/fs/zfs.h
+++ b/include/sys/fs/zfs.h
@@ -23,7 +23,8 @@
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
- * Copyright (c) 2013, Joyent, Inc. All rights reserved.
+ * Copyright (c) 2013, 2017 Joyent, Inc. All rights reserved.
+ * Copyright (c) 2014 Integros [integros.com]
  * Copyright (c) 2017 Datto Inc.
  */
 
@@ -1146,11 +1147,45 @@ typedef enum {
  *		ZFS_EV_POOL_GUID	DATA_TYPE_UINT64
  *		ZFS_EV_VDEV_PATH	DATA_TYPE_STRING	(optional)
  *		ZFS_EV_VDEV_GUID	DATA_TYPE_UINT64
+ *
+ *	ESC_ZFS_HISTORY_EVENT
+ *
+ *		ZFS_EV_POOL_NAME	DATA_TYPE_STRING
+ *		ZFS_EV_POOL_GUID	DATA_TYPE_UINT64
+ *		ZFS_EV_HIST_TIME	DATA_TYPE_UINT64	(optional)
+ *		ZFS_EV_HIST_CMD		DATA_TYPE_STRING	(optional)
+ *		ZFS_EV_HIST_WHO		DATA_TYPE_UINT64	(optional)
+ *		ZFS_EV_HIST_ZONE	DATA_TYPE_STRING	(optional)
+ *		ZFS_EV_HIST_HOST	DATA_TYPE_STRING	(optional)
+ *		ZFS_EV_HIST_TXG		DATA_TYPE_UINT64	(optional)
+ *		ZFS_EV_HIST_INT_EVENT	DATA_TYPE_UINT64	(optional)
+ *		ZFS_EV_HIST_INT_STR	DATA_TYPE_STRING	(optional)
+ *		ZFS_EV_HIST_INT_NAME	DATA_TYPE_STRING	(optional)
+ *		ZFS_EV_HIST_IOCTL	DATA_TYPE_STRING	(optional)
+ *		ZFS_EV_HIST_DSNAME	DATA_TYPE_STRING	(optional)
+ *		ZFS_EV_HIST_DSID	DATA_TYPE_UINT64	(optional)
+ *
+ * The ZFS_EV_HIST_* members will correspond to the ZPOOL_HIST_* members in the
+ * history log nvlist.  The keynames will be free of any spaces or other
+ * characters that could be potentially unexpected to consumers of the
+ * sysevents.
  */
 #define	ZFS_EV_POOL_NAME	"pool_name"
 #define	ZFS_EV_POOL_GUID	"pool_guid"
 #define	ZFS_EV_VDEV_PATH	"vdev_path"
 #define	ZFS_EV_VDEV_GUID	"vdev_guid"
+#define	ZFS_EV_HIST_TIME	"history_time"
+#define	ZFS_EV_HIST_CMD		"history_command"
+#define	ZFS_EV_HIST_WHO		"history_who"
+#define	ZFS_EV_HIST_ZONE	"history_zone"
+#define	ZFS_EV_HIST_HOST	"history_hostname"
+#define	ZFS_EV_HIST_TXG		"history_txg"
+#define	ZFS_EV_HIST_INT_EVENT	"history_internal_event"
+#define	ZFS_EV_HIST_INT_STR	"history_internal_str"
+#define	ZFS_EV_HIST_INT_NAME	"history_internal_name"
+#define	ZFS_EV_HIST_IOCTL	"history_ioctl"
+#define	ZFS_EV_HIST_DSNAME	"history_dsname"
+#define	ZFS_EV_HIST_DSID	"history_dsid"
 
 #ifdef	__cplusplus
 }
diff --git a/include/sys/spa.h b/include/sys/spa.h
index 33f3a7805..dd86aad40 100644
--- a/include/sys/spa.h
+++ b/include/sys/spa.h
@@ -24,6 +24,8 @@
  * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
  * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
  * Copyright 2013 Saso Kiselkov. All rights reserved.
+ * Copyright (c) 2014 Integros [integros.com]
+ * Copyright 2017 Joyent, Inc.
  * Copyright (c) 2017 Datto Inc.
  */
 
@@ -882,10 +884,11 @@ struct zbookmark_phys;
 extern void spa_log_error(spa_t *spa, zio_t *zio);
 extern void zfs_ereport_post(const char *class, spa_t *spa, vdev_t *vd,
     zio_t *zio, uint64_t stateoroffset, uint64_t length);
+extern nvlist_t *zfs_event_create(spa_t *spa, vdev_t *vd, const char *type,
+    const char *name, nvlist_t *aux);
 extern void zfs_post_remove(spa_t *spa, vdev_t *vd);
 extern void zfs_post_state_change(spa_t *spa, vdev_t *vd, uint64_t laststate);
 extern void zfs_post_autoreplace(spa_t *spa, vdev_t *vd);
-extern void zfs_post_sysevent(spa_t *spa, vdev_t *vd, const char *name);
 extern uint64_t spa_get_errlog_size(spa_t *spa);
 extern int spa_get_errlog(spa_t *spa, void *uaddr, size_t *count);
 extern void spa_errlog_rotate(spa_t *spa);
@@ -909,7 +912,8 @@ extern void spa_prop_clear_bootfs(spa_t *spa, uint64_t obj, dmu_tx_t *tx);
 extern void spa_configfile_set(spa_t *, nvlist_t *, boolean_t);
 
 /* asynchronous event notification */
-extern void spa_event_notify(spa_t *spa, vdev_t *vdev, const char *name);
+extern void spa_event_notify(spa_t *spa, vdev_t *vdev, nvlist_t *hist_nvl,
+    const char *name);
 
 #ifdef ZFS_DEBUG
 #define	dprintf_bp(bp, fmt, ...) do {				\
diff --git a/include/sys/sysevent.h b/include/sys/sysevent.h
index 2922e3072..6510297d6 100644
--- a/include/sys/sysevent.h
+++ b/include/sys/sysevent.h
@@ -27,4 +27,10 @@
 #ifndef _SYS_SYSEVENT_H
 #define	_SYS_SYSEVENT_H
 
+#include <sys/nvpair.h>
+
+typedef struct sysevent {
+	nvlist_t *resource;
+} sysevent_t;
+
 #endif
diff --git a/include/sys/sysevent/eventdefs.h b/include/sys/sysevent/eventdefs.h
index eadaaef58..fc2687842 100644
--- a/include/sys/sysevent/eventdefs.h
+++ b/include/sys/sysevent/eventdefs.h
@@ -21,6 +21,7 @@
 /*
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
  * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
+ * Copyright 2017 Joyent, Inc.
  */
 
 #ifndef	_SYS_SYSEVENT_EVENTDEFS_H
@@ -112,6 +113,7 @@ extern "C" {
 #define	ESC_ZFS_VDEV_AUTOEXPAND		"vdev_autoexpand"
 #define	ESC_ZFS_BOOTFS_VDEV_ATTACH	"bootfs_vdev_attach"
 #define	ESC_ZFS_POOL_REGUID		"pool_reguid"
+#define	ESC_ZFS_HISTORY_EVENT		"history_event"
 
 /*
  * datalink subclass definitions.