--- /dev/null
+/*
+ * 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 (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
+ *
+ * Copyright (c) 2016, Intel Corporation.
+ */
+
+/*
+ * This file imlements the minimal FMD module API required to support the
+ * fault logic modules in ZED. This support includes module registration,
+ * memory allocation, module property accessors, basic case management,
+ * one-shot timers and SERD engines.
+ *
+ * In the ZED runtime, the modules are called from a single thread so no
+ * locking is required in this emulated FMD environment.
+ */
+
+#include <sys/types.h>
+#include <sys/fm/protocol.h>
+#include <uuid/uuid.h>
+#include <signal.h>
+#include <strings.h>
+#include <time.h>
+
+#include "fmd_api.h"
+#include "fmd_serd.h"
+
+#include "zfs_agents.h"
+#include "../zed_log.h"
+
+typedef struct fmd_modstat {
+ fmd_stat_t ms_accepted; /* total events accepted by module */
+ fmd_stat_t ms_caseopen; /* cases currently open */
+ fmd_stat_t ms_casesolved; /* total cases solved by module */
+ fmd_stat_t ms_caseclosed; /* total cases closed by module */
+} fmd_modstat_t;
+
+typedef struct fmd_module {
+ const char *mod_name; /* basename of module (ro) */
+ const fmd_hdl_info_t *mod_info; /* module info registered with handle */
+ void *mod_spec; /* fmd_hdl_get/setspecific data value */
+ fmd_stat_t *mod_ustat; /* module specific custom stats */
+ uint_t mod_ustat_cnt; /* count of ustat stats */
+ fmd_modstat_t mod_stats; /* fmd built-in per-module statistics */
+ fmd_serd_hash_t mod_serds; /* hash of serd engs owned by module */
+ char *mod_vers; /* a copy of module version string */
+} fmd_module_t;
+
+/*
+ * ZED has two FMD hardwired module instances
+ */
+fmd_module_t zfs_retire_module;
+fmd_module_t zfs_diagnosis_module;
+
+/*
+ * Enable a reasonable set of defaults for libumem debugging on DEBUG builds.
+ */
+
+#ifdef DEBUG
+const char *
+_umem_debug_init(void)
+{
+ return ("default,verbose"); /* $UMEM_DEBUG setting */
+}
+
+const char *
+_umem_logging_init(void)
+{
+ return ("fail,contents"); /* $UMEM_LOGGING setting */
+}
+#endif
+
+/*
+ * Register a module with fmd and finish module initialization.
+ * Returns an integer indicating whether it succeeded (zero) or
+ * failed (non-zero).
+ */
+int
+fmd_hdl_register(fmd_hdl_t *hdl, int version, const fmd_hdl_info_t *mip)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+
+ mp->mod_info = mip;
+ mp->mod_name = mip->fmdi_desc + 4; /* drop 'ZFS ' prefix */
+ mp->mod_spec = NULL;
+
+ /* bare minimum module stats */
+ (void) strcpy(mp->mod_stats.ms_accepted.fmds_name, "fmd.accepted");
+ (void) strcpy(mp->mod_stats.ms_caseopen.fmds_name, "fmd.caseopen");
+ (void) strcpy(mp->mod_stats.ms_casesolved.fmds_name, "fmd.casesolved");
+ (void) strcpy(mp->mod_stats.ms_caseclosed.fmds_name, "fmd.caseclosed");
+
+ fmd_serd_hash_create(&mp->mod_serds);
+
+ fmd_hdl_debug(hdl, "register module");
+
+ return (0);
+}
+
+void
+fmd_hdl_unregister(fmd_hdl_t *hdl)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+ fmd_modstat_t *msp = &mp->mod_stats;
+ const fmd_hdl_ops_t *ops = mp->mod_info->fmdi_ops;
+
+ /* dump generic module stats */
+ fmd_hdl_debug(hdl, "%s: %llu", msp->ms_accepted.fmds_name,
+ msp->ms_accepted.fmds_value.ui64);
+ if (ops->fmdo_close != NULL) {
+ fmd_hdl_debug(hdl, "%s: %llu", msp->ms_caseopen.fmds_name,
+ msp->ms_caseopen.fmds_value.ui64);
+ fmd_hdl_debug(hdl, "%s: %llu", msp->ms_casesolved.fmds_name,
+ msp->ms_casesolved.fmds_value.ui64);
+ fmd_hdl_debug(hdl, "%s: %llu", msp->ms_caseclosed.fmds_name,
+ msp->ms_caseclosed.fmds_value.ui64);
+ }
+
+ /* dump module specific stats */
+ if (mp->mod_ustat != NULL) {
+ int i;
+
+ for (i = 0; i < mp->mod_ustat_cnt; i++) {
+ fmd_hdl_debug(hdl, "%s: %llu",
+ mp->mod_ustat[i].fmds_name,
+ mp->mod_ustat[i].fmds_value.ui64);
+ }
+ }
+
+ fmd_serd_hash_destroy(&mp->mod_serds);
+
+ fmd_hdl_debug(hdl, "unregister module");
+}
+
+/*
+ * fmd_hdl_setspecific() is used to associate a data pointer with
+ * the specified handle for the duration of the module's lifetime.
+ * This pointer can be retrieved using fmd_hdl_getspecific().
+ */
+void
+fmd_hdl_setspecific(fmd_hdl_t *hdl, void *spec)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+
+ mp->mod_spec = spec;
+}
+
+/*
+ * Return the module-specific data pointer previously associated
+ * with the handle using fmd_hdl_setspecific().
+ */
+void *
+fmd_hdl_getspecific(fmd_hdl_t *hdl)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+
+ return (mp->mod_spec);
+}
+
+void *
+fmd_hdl_alloc(fmd_hdl_t *hdl, size_t size, int flags)
+{
+ return (umem_alloc(size, flags));
+}
+
+void *
+fmd_hdl_zalloc(fmd_hdl_t *hdl, size_t size, int flags)
+{
+ return (umem_zalloc(size, flags));
+}
+
+void
+fmd_hdl_free(fmd_hdl_t *hdl, void *data, size_t size)
+{
+ umem_free(data, size);
+}
+
+/*
+ * Record a module debug message using the specified format.
+ */
+void
+fmd_hdl_debug(fmd_hdl_t *hdl, const char *format, ...)
+{
+ char message[256];
+ va_list vargs;
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+
+ va_start(vargs, format);
+ (void) vsnprintf(message, sizeof (message), format, vargs);
+ va_end(vargs);
+
+ /* prefix message with module name */
+ zed_log_msg(LOG_INFO, "%s: %s", mp->mod_name, message);
+}
+
+/* Property Retrieval */
+
+int32_t
+fmd_prop_get_int32(fmd_hdl_t *hdl, const char *name)
+{
+ /*
+ * These can be looked up in mp->modinfo->fmdi_props
+ * For now we just hard code for phase 2. In the
+ * future, there can be a ZED based override.
+ */
+ if (strcmp(name, "spare_on_remove") == 0)
+ return (1);
+
+ if (strcmp(name, "io_N") == 0 || strcmp(name, "checksum_N") == 0)
+ return (10); /* N = 10 events */
+
+ return (0);
+}
+
+int64_t
+fmd_prop_get_int64(fmd_hdl_t *hdl, const char *name)
+{
+ /*
+ * These can be looked up in mp->modinfo->fmdi_props
+ * For now we just hard code for phase 2. In the
+ * future, there can be a ZED based override.
+ */
+ if (strcmp(name, "remove_timeout") == 0)
+ return (15ULL * 1000ULL * 1000ULL * 1000ULL); /* 15 sec */
+
+ if (strcmp(name, "io_T") == 0 || strcmp(name, "checksum_T") == 0)
+ return (1000ULL * 1000ULL * 1000ULL * 600ULL); /* 10 min */
+
+ return (0);
+}
+
+/* FMD Statistics */
+
+fmd_stat_t *
+fmd_stat_create(fmd_hdl_t *hdl, uint_t flags, uint_t nstats, fmd_stat_t *statv)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+
+ if (flags == FMD_STAT_NOALLOC) {
+ mp->mod_ustat = statv;
+ mp->mod_ustat_cnt = nstats;
+ }
+
+ return (statv);
+}
+
+/* Case Management */
+
+fmd_case_t *
+fmd_case_open(fmd_hdl_t *hdl, void *data)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+ uuid_t uuid;
+
+ fmd_case_t *cp;
+
+ cp = fmd_hdl_zalloc(hdl, sizeof (fmd_case_t), FMD_SLEEP);
+ cp->ci_mod = hdl;
+ cp->ci_state = FMD_CASE_UNSOLVED;
+ cp->ci_flags = FMD_CF_DIRTY;
+ cp->ci_data = data;
+ cp->ci_bufptr = NULL;
+ cp->ci_bufsiz = 0;
+
+ uuid_generate(uuid);
+ uuid_unparse(uuid, cp->ci_uuid);
+
+ fmd_hdl_debug(hdl, "case opened (%s)", cp->ci_uuid);
+ mp->mod_stats.ms_caseopen.fmds_value.ui64++;
+
+ return (cp);
+}
+
+void
+fmd_case_solve(fmd_hdl_t *hdl, fmd_case_t *cp)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+
+ /*
+ * For ZED, the event was already sent from fmd_case_add_suspect()
+ */
+
+ if (cp->ci_state >= FMD_CASE_SOLVED)
+ fmd_hdl_debug(hdl, "case is already solved or closed");
+
+ cp->ci_state = FMD_CASE_SOLVED;
+
+ fmd_hdl_debug(hdl, "case solved (%s)", cp->ci_uuid);
+ mp->mod_stats.ms_casesolved.fmds_value.ui64++;
+}
+
+void
+fmd_case_close(fmd_hdl_t *hdl, fmd_case_t *cp)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+ const fmd_hdl_ops_t *ops = mp->mod_info->fmdi_ops;
+
+ fmd_hdl_debug(hdl, "case closed (%s)", cp->ci_uuid);
+
+ if (ops->fmdo_close != NULL)
+ ops->fmdo_close(hdl, cp);
+
+ mp->mod_stats.ms_caseopen.fmds_value.ui64--;
+ mp->mod_stats.ms_caseclosed.fmds_value.ui64++;
+
+ if (cp->ci_bufptr != NULL && cp->ci_bufsiz > 0)
+ fmd_hdl_free(hdl, cp->ci_bufptr, cp->ci_bufsiz);
+
+ fmd_hdl_free(hdl, cp, sizeof (fmd_case_t));
+}
+
+void
+fmd_case_uuresolved(fmd_hdl_t *hdl, const char *uuid)
+{
+ fmd_hdl_debug(hdl, "case resolved by uuid (%s)", uuid);
+}
+
+int
+fmd_case_solved(fmd_hdl_t *hdl, fmd_case_t *cp)
+{
+ return ((cp->ci_state >= FMD_CASE_SOLVED) ? FMD_B_TRUE : FMD_B_FALSE);
+}
+
+void
+fmd_case_add_ereport(fmd_hdl_t *hdl, fmd_case_t *cp, fmd_event_t *ep)
+{
+}
+
+static void
+zed_log_fault(nvlist_t *nvl, const char *uuid, const char *code)
+{
+ nvlist_t *rsrc;
+ char *strval;
+ uint64_t guid;
+ uint8_t byte;
+
+ zed_log_msg(LOG_INFO, "\nzed_fault_event:");
+
+ if (uuid != NULL)
+ zed_log_msg(LOG_INFO, "\t%s: %s", FM_SUSPECT_UUID, uuid);
+ if (nvlist_lookup_string(nvl, FM_CLASS, &strval) == 0)
+ zed_log_msg(LOG_INFO, "\t%s: %s", FM_CLASS, strval);
+ if (code != NULL)
+ zed_log_msg(LOG_INFO, "\t%s: %s", FM_SUSPECT_DIAG_CODE, code);
+ if (nvlist_lookup_uint8(nvl, FM_FAULT_CERTAINTY, &byte) == 0)
+ zed_log_msg(LOG_INFO, "\t%s: %llu", FM_FAULT_CERTAINTY, byte);
+ if (nvlist_lookup_nvlist(nvl, FM_FAULT_RESOURCE, &rsrc) == 0) {
+ if (nvlist_lookup_string(rsrc, FM_FMRI_SCHEME, &strval) == 0)
+ zed_log_msg(LOG_INFO, "\t%s: %s", FM_FMRI_SCHEME,
+ strval);
+ if (nvlist_lookup_uint64(rsrc, FM_FMRI_ZFS_POOL, &guid) == 0)
+ zed_log_msg(LOG_INFO, "\t%s: %llu", FM_FMRI_ZFS_POOL,
+ guid);
+ if (nvlist_lookup_uint64(rsrc, FM_FMRI_ZFS_VDEV, &guid) == 0)
+ zed_log_msg(LOG_INFO, "\t%s: %llu \n", FM_FMRI_ZFS_VDEV,
+ guid);
+ }
+}
+
+static const char *
+fmd_fault_mkcode(nvlist_t *fault)
+{
+ char *class, *code = "-";
+
+ /*
+ * Note: message codes come from: openzfs/usr/src/cmd/fm/dicts/ZFS.po
+ */
+ if (nvlist_lookup_string(fault, FM_CLASS, &class) == 0) {
+ if (strcmp(class, "fault.fs.zfs.vdev.io") == 0)
+ code = "ZFS-8000-FD";
+ else if (strcmp(class, "fault.fs.zfs.vdev.checksum") == 0)
+ code = "ZFS-8000-GH";
+ else if (strcmp(class, "fault.fs.zfs.io_failure_wait") == 0)
+ code = "ZFS-8000-HC";
+ else if (strcmp(class, "fault.fs.zfs.io_failure_continue") == 0)
+ code = "ZFS-8000-JQ";
+ else if (strcmp(class, "fault.fs.zfs.log_replay") == 0)
+ code = "ZFS-8000-K4";
+ else if (strcmp(class, "fault.fs.zfs.pool") == 0)
+ code = "ZFS-8000-CS";
+ else if (strcmp(class, "fault.fs.zfs.device") == 0)
+ code = "ZFS-8000-D3";
+
+ }
+ return (code);
+}
+
+void
+fmd_case_add_suspect(fmd_hdl_t *hdl, fmd_case_t *cp, nvlist_t *fault)
+{
+ nvlist_t *nvl;
+ const char *code = fmd_fault_mkcode(fault);
+ int64_t tod[2];
+ int err = 0;
+
+ /*
+ * payload derived from fmd_protocol_list()
+ */
+
+ (void) gettimeofday(&cp->ci_tv, NULL);
+ tod[0] = cp->ci_tv.tv_sec;
+ tod[1] = cp->ci_tv.tv_usec;
+
+ nvl = fmd_nvl_alloc(hdl, FMD_SLEEP);
+
+ err |= nvlist_add_uint8(nvl, FM_VERSION, FM_SUSPECT_VERSION);
+ err |= nvlist_add_string(nvl, FM_CLASS, FM_LIST_SUSPECT_CLASS);
+ err |= nvlist_add_string(nvl, FM_SUSPECT_UUID, cp->ci_uuid);
+ err |= nvlist_add_string(nvl, FM_SUSPECT_DIAG_CODE, code);
+ err |= nvlist_add_int64_array(nvl, FM_SUSPECT_DIAG_TIME, tod, 2);
+ err |= nvlist_add_uint32(nvl, FM_SUSPECT_FAULT_SZ, 1);
+ err |= nvlist_add_nvlist_array(nvl, FM_SUSPECT_FAULT_LIST, &fault, 1);
+
+ if (err)
+ zed_log_die("failed to populate nvlist");
+
+ zed_log_fault(fault, cp->ci_uuid, code);
+ zfs_agent_post_event(FM_LIST_SUSPECT_CLASS, NULL, nvl);
+
+ nvlist_free(nvl);
+ nvlist_free(fault);
+}
+
+void
+fmd_case_setspecific(fmd_hdl_t *hdl, fmd_case_t *cp, void *data)
+{
+ cp->ci_data = data;
+}
+
+void *
+fmd_case_getspecific(fmd_hdl_t *hdl, fmd_case_t *cp)
+{
+ return (cp->ci_data);
+}
+
+void
+fmd_buf_create(fmd_hdl_t *hdl, fmd_case_t *cp, const char *name, size_t size)
+{
+ assert(strcmp(name, "data") == 0);
+ assert(cp->ci_bufptr == NULL);
+ assert(size < (1024 * 1024));
+
+ cp->ci_bufptr = fmd_hdl_alloc(hdl, size, FMD_SLEEP);
+ cp->ci_bufsiz = size;
+}
+
+void
+fmd_buf_read(fmd_hdl_t *hdl, fmd_case_t *cp,
+ const char *name, void *buf, size_t size)
+{
+ assert(strcmp(name, "data") == 0);
+ assert(cp->ci_bufptr != NULL);
+ assert(size <= cp->ci_bufsiz);
+
+ bcopy(cp->ci_bufptr, buf, size);
+}
+
+void
+fmd_buf_write(fmd_hdl_t *hdl, fmd_case_t *cp,
+ const char *name, const void *buf, size_t size)
+{
+ assert(strcmp(name, "data") == 0);
+ assert(cp->ci_bufptr != NULL);
+ assert(cp->ci_bufsiz >= size);
+
+ bcopy(buf, cp->ci_bufptr, size);
+}
+
+/* SERD Engines */
+
+void
+fmd_serd_create(fmd_hdl_t *hdl, const char *name, uint_t n, hrtime_t t)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+
+ if (fmd_serd_eng_lookup(&mp->mod_serds, name) != NULL) {
+ zed_log_msg(LOG_ERR, "failed to create SERD engine '%s': "
+ " name already exists", name);
+ return;
+ }
+
+ (void) fmd_serd_eng_insert(&mp->mod_serds, name, n, t);
+}
+
+void
+fmd_serd_destroy(fmd_hdl_t *hdl, const char *name)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+
+ fmd_serd_eng_delete(&mp->mod_serds, name);
+
+ fmd_hdl_debug(hdl, "serd_destroy %s", name);
+}
+
+int
+fmd_serd_exists(fmd_hdl_t *hdl, const char *name)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+
+ return (fmd_serd_eng_lookup(&mp->mod_serds, name) != NULL);
+}
+
+void
+fmd_serd_reset(fmd_hdl_t *hdl, const char *name)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+ fmd_serd_eng_t *sgp;
+
+ if ((sgp = fmd_serd_eng_lookup(&mp->mod_serds, name)) == NULL) {
+ zed_log_msg(LOG_ERR, "serd engine '%s' does not exist", name);
+ return;
+ }
+
+ fmd_serd_eng_reset(sgp);
+
+ fmd_hdl_debug(hdl, "serd_reset %s", name);
+}
+
+int
+fmd_serd_record(fmd_hdl_t *hdl, const char *name, fmd_event_t *ep)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+ fmd_serd_eng_t *sgp;
+ int err;
+
+ if ((sgp = fmd_serd_eng_lookup(&mp->mod_serds, name)) == NULL) {
+ zed_log_msg(LOG_ERR, "failed to add record to SERD engine '%s'",
+ name);
+ return (FMD_B_FALSE);
+ }
+ err = fmd_serd_eng_record(sgp, ep->ev_hrt);
+
+ return (err);
+}
+
+/* FMD Timers */
+
+static void
+_timer_notify(union sigval sv)
+{
+ fmd_timer_t *ftp = sv.sival_ptr;
+ fmd_hdl_t *hdl = ftp->ft_hdl;
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+ const fmd_hdl_ops_t *ops = mp->mod_info->fmdi_ops;
+ struct itimerspec its;
+
+ fmd_hdl_debug(hdl, "timer fired (%p)", ftp->ft_tid);
+
+ /* disarm the timer */
+ bzero(&its, sizeof (struct itimerspec));
+ timer_settime(ftp->ft_tid, 0, &its, NULL);
+
+ /* Note that the fmdo_timeout can remove this timer */
+ if (ops->fmdo_timeout != NULL)
+ ops->fmdo_timeout(hdl, ftp, ftp->ft_arg);
+}
+
+/*
+ * Install a new timer which will fire at least delta nanoseconds after the
+ * current time. After the timeout has expired, the module's fmdo_timeout
+ * entry point is called.
+ */
+fmd_timer_t *
+fmd_timer_install(fmd_hdl_t *hdl, void *arg, fmd_event_t *ep, hrtime_t delta)
+{
+ struct sigevent sev;
+ struct itimerspec its;
+ fmd_timer_t *ftp;
+
+ ftp = fmd_hdl_alloc(hdl, sizeof (fmd_timer_t), FMD_SLEEP);
+ ftp->ft_arg = arg;
+ ftp->ft_hdl = hdl;
+
+ its.it_value.tv_sec = delta / 1000000000;
+ its.it_value.tv_nsec = delta % 1000000000;
+ its.it_interval.tv_sec = its.it_value.tv_sec;
+ its.it_interval.tv_nsec = its.it_value.tv_nsec;
+
+ sev.sigev_notify = SIGEV_THREAD;
+ sev.sigev_notify_function = _timer_notify;
+ sev.sigev_notify_attributes = NULL;
+ sev.sigev_value.sival_ptr = ftp;
+
+ timer_create(CLOCK_REALTIME, &sev, &ftp->ft_tid);
+ timer_settime(ftp->ft_tid, 0, &its, NULL);
+
+ fmd_hdl_debug(hdl, "installing timer for %d secs (%p)",
+ (int)its.it_value.tv_sec, ftp->ft_tid);
+
+ return (ftp);
+}
+
+void
+fmd_timer_remove(fmd_hdl_t *hdl, fmd_timer_t *ftp)
+{
+ fmd_hdl_debug(hdl, "removing timer (%p)", ftp->ft_tid);
+
+ timer_delete(ftp->ft_tid);
+
+ fmd_hdl_free(hdl, ftp, sizeof (fmd_timer_t));
+}
+
+/* Name-Value Pair Lists */
+
+nvlist_t *
+fmd_nvl_create_fault(fmd_hdl_t *hdl, const char *class, uint8_t certainty,
+ nvlist_t *asru, nvlist_t *fru, nvlist_t *resource)
+{
+ nvlist_t *nvl;
+ int err = 0;
+
+ if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
+ zed_log_die("failed to xalloc fault nvlist");
+
+ err |= nvlist_add_uint8(nvl, FM_VERSION, FM_FAULT_VERSION);
+ err |= nvlist_add_string(nvl, FM_CLASS, class);
+ err |= nvlist_add_uint8(nvl, FM_FAULT_CERTAINTY, certainty);
+
+ if (asru != NULL)
+ err |= nvlist_add_nvlist(nvl, FM_FAULT_ASRU, asru);
+ if (fru != NULL)
+ err |= nvlist_add_nvlist(nvl, FM_FAULT_FRU, fru);
+ if (resource != NULL)
+ err |= nvlist_add_nvlist(nvl, FM_FAULT_RESOURCE, resource);
+
+ if (err)
+ zed_log_die("failed to populate nvlist: %s\n", strerror(err));
+
+ return (nvl);
+}
+
+/*
+ * sourced from fmd_string.c
+ */
+static int
+fmd_strmatch(const char *s, const char *p)
+{
+ char c;
+
+ if (p == NULL)
+ return (0);
+
+ if (s == NULL)
+ s = ""; /* treat NULL string as the empty string */
+
+ do {
+ if ((c = *p++) == '\0')
+ return (*s == '\0');
+
+ if (c == '*') {
+ while (*p == '*')
+ p++; /* consecutive *'s can be collapsed */
+
+ if (*p == '\0')
+ return (1);
+
+ while (*s != '\0') {
+ if (fmd_strmatch(s++, p) != 0)
+ return (1);
+ }
+
+ return (0);
+ }
+ } while (c == *s++);
+
+ return (0);
+}
+
+int
+fmd_nvl_class_match(fmd_hdl_t *hdl, nvlist_t *nvl, const char *pattern)
+{
+ char *class;
+
+ return (nvl != NULL &&
+ nvlist_lookup_string(nvl, FM_CLASS, &class) == 0 &&
+ fmd_strmatch(class, pattern));
+}
+
+nvlist_t *
+fmd_nvl_alloc(fmd_hdl_t *hdl, int flags)
+{
+ nvlist_t *nvl = NULL;
+
+ if (nvlist_alloc(&nvl, NV_UNIQUE_NAME, 0) != 0)
+ return (NULL);
+
+ return (nvl);
+}
+
+
+/*
+ * ZED Agent specific APIs
+ */
+
+fmd_hdl_t *
+fmd_module_hdl(const char *name)
+{
+ if (strcmp(name, "zfs-retire") == 0)
+ return ((fmd_hdl_t *)&zfs_retire_module);
+ if (strcmp(name, "zfs-diagnosis") == 0)
+ return ((fmd_hdl_t *)&zfs_diagnosis_module);
+
+ return (NULL);
+}
+
+boolean_t
+fmd_module_initialized(fmd_hdl_t *hdl)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+
+ return (mp->mod_info != NULL);
+}
+
+/*
+ * fmd_module_recv is called for each event that is received by
+ * the fault manager that has a class that matches one of the
+ * module's subscriptions.
+ */
+void
+fmd_module_recv(fmd_hdl_t *hdl, nvlist_t *nvl, const char *class)
+{
+ fmd_module_t *mp = (fmd_module_t *)hdl;
+ const fmd_hdl_ops_t *ops = mp->mod_info->fmdi_ops;
+ fmd_event_t faux_event = {0};
+ int64_t *tv;
+ uint_t n;
+
+ /*
+ * Will need to normalized this if we persistently store the case data
+ */
+ if (nvlist_lookup_int64_array(nvl, FM_EREPORT_TIME, &tv, &n) == 0)
+ faux_event.ev_hrt = tv[0] * NANOSEC + tv[1];
+ else
+ faux_event.ev_hrt = 0;
+
+ ops->fmdo_recv(hdl, &faux_event, nvl, class);
+
+ mp->mod_stats.ms_accepted.fmds_value.ui64++;
+
+ /* TBD - should we initiate fm_module_gc() periodically? */
+}
projects / mirror_zfs-debian.git / blobdiff