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9530eb64e0
Sponsored-by: https://despairlabs.com/sponsor/ Signed-off-by: Rob Norris <robn@despairlabs.com> Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
// SPDX-License-Identifier: CDDL-1.0
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
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*/
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#ifndef _SYS_FM_UTIL_H
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#define _SYS_FM_UTIL_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <sys/nvpair.h>
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#include <sys/zfs_file.h>
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/*
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* Shared user/kernel definitions for class length, error channel name,
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* and kernel event publisher string.
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*/
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#define FM_MAX_CLASS 100
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#define FM_ERROR_CHAN "com.sun:fm:error"
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#define FM_PUB "fm"
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/*
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* ereport dump device transport support
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*
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* Ereports are written out to the dump device at a proscribed offset from the
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* end, similar to in-transit log messages. The ereports are represented as a
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* erpt_dump_t header followed by ed_size bytes of packed native nvlist data.
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*
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* NOTE: All of these constants and the header must be defined so they have the
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* same representation for *both* 32-bit and 64-bit producers and consumers.
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*/
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#define ERPT_MAGIC 0xf00d4eddU
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#define ERPT_MAX_ERRS 16
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#define ERPT_DATA_SZ (6 * 1024)
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#define ERPT_EVCH_MAX 256
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#define ERPT_HIWAT 64
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typedef struct erpt_dump {
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uint32_t ed_magic; /* ERPT_MAGIC or zero to indicate end */
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uint32_t ed_chksum; /* checksum32() of packed nvlist data */
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uint32_t ed_size; /* ereport (nvl) fixed buf size */
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uint32_t ed_pad; /* reserved for future use */
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hrtime_t ed_hrt_nsec; /* hrtime of this ereport */
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hrtime_t ed_hrt_base; /* hrtime sample corresponding to ed_tod_base */
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struct {
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uint64_t sec; /* seconds since gettimeofday() Epoch */
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uint64_t nsec; /* nanoseconds past ed_tod_base.sec */
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} ed_tod_base;
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} erpt_dump_t;
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#ifdef _KERNEL
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#define ZEVENT_SHUTDOWN 0x1
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typedef void zevent_cb_t(nvlist_t *, nvlist_t *);
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typedef struct zevent_s {
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nvlist_t *ev_nvl; /* protected by the zevent_lock */
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nvlist_t *ev_detector; /* " */
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list_t ev_ze_list; /* " */
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list_node_t ev_node; /* " */
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zevent_cb_t *ev_cb; /* " */
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uint64_t ev_eid;
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} zevent_t;
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typedef struct zfs_zevent {
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zevent_t *ze_zevent; /* protected by the zevent_lock */
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list_node_t ze_node; /* " */
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uint64_t ze_dropped; /* " */
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} zfs_zevent_t;
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extern void fm_init(void);
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extern void fm_fini(void);
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extern void zfs_zevent_post_cb(nvlist_t *nvl, nvlist_t *detector);
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extern int zfs_zevent_post(nvlist_t *, nvlist_t *, zevent_cb_t *);
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extern void zfs_zevent_drain_all(uint_t *);
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extern zfs_file_t *zfs_zevent_fd_hold(int, minor_t *, zfs_zevent_t **);
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extern void zfs_zevent_fd_rele(zfs_file_t *);
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extern int zfs_zevent_next(zfs_zevent_t *, nvlist_t **, uint64_t *, uint64_t *);
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extern int zfs_zevent_wait(zfs_zevent_t *);
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extern int zfs_zevent_seek(zfs_zevent_t *, uint64_t);
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extern void zfs_zevent_init(zfs_zevent_t **);
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extern void zfs_zevent_destroy(zfs_zevent_t *);
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extern void zfs_zevent_track_duplicate(void);
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extern void zfs_ereport_init(void);
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extern void zfs_ereport_fini(void);
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#else
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static inline void fm_init(void) { }
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static inline void fm_fini(void) { }
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#endif /* _KERNEL */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_FM_UTIL_H */
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