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/*
* 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.
*/
#include <sys/fm/protocol.h>
#include <fmd_api.h>
#include <fmd_subr.h>
#include <fmd_string.h>
#include <fmd_protocol.h>
#include <fmd_module.h>
#include <fmd_error.h>
static struct {
fmd_stat_t nosub;
fmd_stat_t module;
} self_stats = {
{ "nosub", FMD_TYPE_UINT64, "event classes with no subscribers seen" },
{ "module", FMD_TYPE_UINT64, "error events received from fmd modules" },
};
typedef struct self_case {
enum { SC_CLASS, SC_MODULE } sc_kind;
char *sc_name;
} self_case_t;
static self_case_t *
self_case_create(fmd_hdl_t *hdl, int kind, const char *name)
{
self_case_t *scp = fmd_hdl_alloc(hdl, sizeof (self_case_t), FMD_SLEEP);
scp->sc_kind = kind;
scp->sc_name = fmd_hdl_strdup(hdl, name, FMD_SLEEP);
return (scp);
}
static void
self_case_destroy(fmd_hdl_t *hdl, self_case_t *scp)
{
fmd_hdl_strfree(hdl, scp->sc_name);
fmd_hdl_free(hdl, scp, sizeof (self_case_t));
}
static fmd_case_t *
self_case_lookup(fmd_hdl_t *hdl, int kind, const char *name)
{
fmd_case_t *cp = NULL;
while ((cp = fmd_case_next(hdl, cp)) != NULL) {
self_case_t *scp = fmd_case_getspecific(hdl, cp);
if (scp->sc_kind == kind && strcmp(scp->sc_name, name) == 0)
break;
}
return (cp);
}
/*ARGSUSED*/
static void
self_recv(fmd_hdl_t *hdl, fmd_event_t *ep, nvlist_t *nvl, const char *class)
{
fmd_case_t *cp;
nvlist_t *flt, *mod;
char *name;
int err = 0;
/*
* If we get an error report from another fmd module, then create a
* case for the module and add the ereport to it. The error is either
* from fmd_hdl_error() or from fmd_api_error(). If it is the latter,
* fmd_module_error() will send another event of class EFMD_MOD_FAIL
* when the module has failed, at which point we can solve the case.
* We can also close the case on EFMD_MOD_CONF (bad config file).
*/
if (strcmp(class, fmd_errclass(EFMD_MODULE)) == 0 &&
nvlist_lookup_nvlist(nvl, FM_EREPORT_DETECTOR, &mod) == 0 &&
nvlist_lookup_string(mod, FM_FMRI_FMD_NAME, &name) == 0) {
if ((cp = self_case_lookup(hdl, SC_MODULE, name)) == NULL) {
cp = fmd_case_open(hdl,
self_case_create(hdl, SC_MODULE, name));
}
fmd_case_add_ereport(hdl, cp, ep);
self_stats.module.fmds_value.ui64++;
(void) nvlist_lookup_int32(nvl, FMD_ERR_MOD_ERRNO, &err);
if (err != EFMD_MOD_FAIL && err != EFMD_MOD_CONF)
return; /* module is still active, so keep case open */
if (fmd_case_solved(hdl, cp))
return; /* case is already closed but error in _fini */
class = err == EFMD_MOD_FAIL ? FMD_FLT_MOD : FMD_FLT_CONF;
flt = fmd_protocol_fault(class, 100, mod, NULL, NULL, NULL);
fmd_case_add_suspect(hdl, cp, flt);
fmd_case_solve(hdl, cp);
return;
}
/*
* If we get an I/O DDI ereport, drop it for now until the I/O DE is
* implemented and integrated. Existing drivers in O/N have bugs that
* will trigger these and we don't want this producing FMD_FLT_NOSUB.
*/
if (strncmp(class, "ereport.io.ddi.", strlen("ereport.io.ddi.")) == 0)
return; /* if we got a DDI ereport, drop it for now */
/*
* If we get any other type of event then it is of a class for which
* there are no subscribers. Some of these correspond to internal fmd
* errors, which we ignore. Otherwise we keep one case per class and
* use it to produce a message indicating that something is awry.
*/
if (strcmp(class, FM_LIST_SUSPECT_CLASS) == 0 ||
strcmp(class, FM_LIST_ISOLATED_CLASS) == 0 ||
strcmp(class, FM_LIST_UPDATED_CLASS) == 0 ||
strcmp(class, FM_LIST_RESOLVED_CLASS) == 0 ||
strcmp(class, FM_LIST_REPAIRED_CLASS) == 0 ||
strncmp(class, FM_FAULT_CLASS, strlen(FM_FAULT_CLASS)) == 0 ||
strncmp(class, FM_DEFECT_CLASS, strlen(FM_DEFECT_CLASS)) == 0)
return; /* if no agents are present just drop list.* */
if (strncmp(class, FMD_ERR_CLASS, FMD_ERR_CLASS_LEN) == 0)
return; /* if fmd itself produced the error just drop it */
if (strncmp(class, FMD_RSRC_CLASS, FMD_RSRC_CLASS_LEN) == 0)
return; /* if fmd itself produced the event just drop it */
if (strncmp(class, SYSEVENT_RSRC_CLASS, SYSEVENT_RSRC_CLASS_LEN) == 0)
return; /* sysvent resources are auto generated by fmd */
if (self_case_lookup(hdl, SC_CLASS, class) != NULL)
return; /* case is already open against this class */
if (strncmp(class, FM_IREPORT_CLASS ".",
sizeof (FM_IREPORT_CLASS)) == 0)
return; /* no subscriber required for ireport.* */
cp = fmd_case_open(hdl, self_case_create(hdl, SC_CLASS, class));
fmd_case_add_ereport(hdl, cp, ep);
self_stats.nosub.fmds_value.ui64++;
flt = fmd_protocol_fault(FMD_FLT_NOSUB, 100, NULL, NULL, NULL, NULL);
(void) nvlist_add_string(flt, "nosub_class", class);
fmd_case_add_suspect(hdl, cp, flt);
fmd_case_solve(hdl, cp);
}
static void
self_close(fmd_hdl_t *hdl, fmd_case_t *cp)
{
self_case_destroy(hdl, fmd_case_getspecific(hdl, cp));
}
static const fmd_hdl_ops_t self_ops = {
self_recv, /* fmdo_recv */
NULL, /* fmdo_timeout */
self_close, /* fmdo_close */
NULL, /* fmdo_stats */
NULL, /* fmdo_gc */
};
void
self_init(fmd_hdl_t *hdl)
{
fmd_module_t *mp = (fmd_module_t *)hdl; /* see below */
fmd_hdl_info_t info = {
"Fault Manager Self-Diagnosis", "1.0", &self_ops, NULL
};
/*
* Unlike other modules, fmd-self-diagnosis has some special needs that
* fall outside of what we want in the module API. Manually disable
* checkpointing for this module by tweaking the mod_stats values.
* The self-diagnosis world relates to fmd's running state and modules
* which all change when it restarts, so don't bother w/ checkpointing.
*/
(void) pthread_mutex_lock(&mp->mod_stats_lock);
mp->mod_stats->ms_ckpt_save.fmds_value.bool = FMD_B_FALSE;
mp->mod_stats->ms_ckpt_restore.fmds_value.bool = FMD_B_FALSE;
(void) pthread_mutex_unlock(&mp->mod_stats_lock);
if (fmd_hdl_register(hdl, FMD_API_VERSION, &info) != 0)
return; /* failed to register with fmd */
(void) fmd_stat_create(hdl, FMD_STAT_NOALLOC, sizeof (self_stats) /
sizeof (fmd_stat_t), (fmd_stat_t *)&self_stats);
}
void
self_fini(fmd_hdl_t *hdl)
{
fmd_case_t *cp = NULL;
while ((cp = fmd_case_next(hdl, cp)) != NULL)
self_case_destroy(hdl, fmd_case_getspecific(hdl, cp));
}
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