/*
* 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/types.h>
#include <sys/utsname.h>
#include <sys/param.h>
#include <sys/systeminfo.h>
#include <sys/fm/util.h>
#include <smbios.h>
#include <limits.h>
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <door.h>
#include <fmd_conf.h>
#include <fmd_dispq.h>
#include <fmd_timerq.h>
#include <fmd_subr.h>
#include <fmd_error.h>
#include <fmd_module.h>
#include <fmd_thread.h>
#include <fmd_alloc.h>
#include <fmd_string.h>
#include <fmd_builtin.h>
#include <fmd_ustat.h>
#include <fmd_protocol.h>
#include <fmd_scheme.h>
#include <fmd_asru.h>
#include <fmd_case.h>
#include <fmd_log.h>
#include <fmd_idspace.h>
#include <fmd_rpc.h>
#include <fmd_dr.h>
#include <fmd_topo.h>
#include <fmd_xprt.h>
#include <fmd_ctl.h>
#include <sys/openpromio.h>
#include <libdevinfo.h>
#include <fmd.h>
extern const nv_alloc_ops_t fmd_nv_alloc_ops; /* see fmd_nv.c */
const char _fmd_version[] = "1.2"; /* daemon version string */
static char _fmd_plat[MAXNAMELEN]; /* native platform string */
static char _fmd_isa[MAXNAMELEN]; /* native instruction set */
static struct utsname _fmd_uts; /* native uname(2) info */
static char _fmd_psn[MAXNAMELEN]; /* product serial number */
static char _fmd_csn[MAXNAMELEN]; /* chassis serial number */
static char _fmd_prod[MAXNAMELEN]; /* product name string */
/*
* Note: the configuration file path is ordered from most common to most host-
* specific because new conf files are merged/override previous ones. The
* module paths are in the opposite order, from most specific to most common,
* because once a module is loaded fmd will not try to load over the same name.
*/
static const char _fmd_conf_path[] =
"%r/usr/lib/fm/fmd:"
"%r/usr/platform/%m/lib/fm/fmd:"
"%r/usr/platform/%i/lib/fm/fmd:"
"%r/etc/fm/fmd";
static const char _fmd_agent_path[] =
"%r/usr/platform/%i/lib/fm/fmd/agents:"
"%r/usr/platform/%m/lib/fm/fmd/agents:"
"%r/usr/lib/fm/fmd/agents";
static const char _fmd_plugin_path[] =
"%r/usr/platform/%i/lib/fm/fmd/plugins:"
"%r/usr/platform/%m/lib/fm/fmd/plugins:"
"%r/usr/lib/fm/fmd/plugins";
static const char _fmd_scheme_path[] =
"usr/lib/fm/fmd/schemes";
static const fmd_conf_mode_t _fmd_cerror_modes[] = {
{ "unload", "unload offending client module", FMD_CERROR_UNLOAD },
{ "stop", "stop daemon for debugger attach", FMD_CERROR_STOP },
{ "abort", "abort daemon and force core dump", FMD_CERROR_ABORT },
{ NULL, NULL, 0 }
};
static const fmd_conf_mode_t _fmd_dbout_modes[] = {
{ "stderr", "send debug messages to stderr", FMD_DBOUT_STDERR },
{ "syslog", "send debug messages to syslog", FMD_DBOUT_SYSLOG },
{ NULL, NULL, 0 }
};
static const fmd_conf_mode_t _fmd_debug_modes[] = {
{ "help", "display debugging modes and exit", FMD_DBG_HELP },
{ "mod", "debug module load/unload/locking", FMD_DBG_MOD },
{ "disp", "debug dispatch queue processing", FMD_DBG_DISP },
{ "xprt", "debug transport-specific routines", FMD_DBG_XPRT },
{ "evt", "debug event subsystem routines", FMD_DBG_EVT },
{ "log", "debug log subsystem routines", FMD_DBG_LOG },
{ "tmr", "debug timer subsystem routines", FMD_DBG_TMR },
{ "fmri", "debug fmri subsystem routines", FMD_DBG_FMRI },
{ "asru", "debug asru subsystem routines", FMD_DBG_ASRU },
{ "case", "debug case subsystem routines", FMD_DBG_CASE },
{ "ckpt", "debug checkpoint routines", FMD_DBG_CKPT },
{ "rpc", "debug rpc service routines", FMD_DBG_RPC },
{ "trace", "display matching trace calls", FMD_DBG_TRACE },
{ "all", "enable all available debug modes", FMD_DBG_ALL },
{ NULL, NULL, 0 }
};
static int
fmd_cerror_set(fmd_conf_param_t *pp, const char *value)
{
return (fmd_conf_mode_set(_fmd_cerror_modes, pp, value));
}
static int
fmd_dbout_set(fmd_conf_param_t *pp, const char *value)
{
return (fmd_conf_mode_set(_fmd_dbout_modes, pp, value));
}
static int
fmd_debug_set(fmd_conf_param_t *pp, const char *value)
{
int err = fmd_conf_mode_set(_fmd_debug_modes, pp, value);
if (err == 0)
fmd.d_fmd_debug = pp->cp_value.cpv_num;
return (err);
}
static int
fmd_trmode_set(fmd_conf_param_t *pp, const char *value)
{
fmd_tracebuf_f *func;
if (strcasecmp(value, "none") == 0)
func = fmd_trace_none;
else if (strcasecmp(value, "lite") == 0)
func = fmd_trace_lite;
else if (strcasecmp(value, "full") == 0)
func = fmd_trace_full;
else
return (fmd_set_errno(EFMD_CONF_INVAL));
fmd.d_thr_trace = (void (*)())func;
pp->cp_value.cpv_ptr = (void *)func;
return (0);
}
static void
fmd_trmode_get(const fmd_conf_param_t *pp, void *ptr)
{
*((void **)ptr) = pp->cp_value.cpv_ptr;
}
static int
fmd_clkmode_set(fmd_conf_param_t *pp, const char *value)
{
const fmd_timeops_t *ops;
if (strcasecmp(value, "native") == 0)
ops = &fmd_timeops_native;
else if (strcasecmp(value, "simulated") == 0)
ops = &fmd_timeops_simulated;
else
return (fmd_set_errno(EFMD_CONF_INVAL));
fmd.d_clockops = ops;
pp->cp_value.cpv_ptr = (void *)ops;
return (0);
}
static void
fmd_clkmode_get(const fmd_conf_param_t *pp, void *ptr)
{
*((void **)ptr) = pp->cp_value.cpv_ptr;
}
static const fmd_conf_ops_t fmd_cerror_ops = {
fmd_cerror_set, fmd_conf_mode_get, fmd_conf_notsup, fmd_conf_nop
};
static const fmd_conf_ops_t fmd_dbout_ops = {
fmd_dbout_set, fmd_conf_mode_get, fmd_conf_notsup, fmd_conf_nop
};
static const fmd_conf_ops_t fmd_debug_ops = {
fmd_debug_set, fmd_conf_mode_get, fmd_conf_notsup, fmd_conf_nop
};
static const fmd_conf_ops_t fmd_trmode_ops = {
fmd_trmode_set, fmd_trmode_get, fmd_conf_notsup, fmd_conf_nop
};
static const fmd_conf_ops_t fmd_clkmode_ops = {
fmd_clkmode_set, fmd_clkmode_get, fmd_conf_notsup, fmd_conf_nop
};
static const fmd_conf_formal_t _fmd_conf[] = {
{ "agent.path", &fmd_conf_path, _fmd_agent_path }, /* path for agents */
{ "alloc_msecs", &fmd_conf_uint32, "10" }, /* msecs before alloc retry */
{ "alloc_tries", &fmd_conf_uint32, "3" }, /* max # of alloc retries */
{ "product_sn", &fmd_conf_string, _fmd_psn }, /* product serial number */
{ "chassis", &fmd_conf_string, _fmd_csn }, /* chassis serial number */
{ "ckpt.dir", &fmd_conf_string, "var/fm/fmd/ckpt" }, /* ckpt directory path */
{ "ckpt.dirmode", &fmd_conf_int32, "0755" }, /* ckpt directory perm mode */
{ "ckpt.mode", &fmd_conf_int32, "0644" }, /* ckpt file perm mode */
{ "ckpt.restore", &fmd_conf_bool, "true" }, /* restore checkpoints? */
{ "ckpt.save", &fmd_conf_bool, "true" }, /* save checkpoints? */
{ "ckpt.zero", &fmd_conf_bool, "false" }, /* zero checkpoints on start? */
{ "client.buflim", &fmd_conf_size, "10m" }, /* client buffer space limit */
{ "client.dbout", &fmd_dbout_ops, NULL }, /* client debug output sinks */
{ "client.debug", &fmd_conf_bool, NULL }, /* client debug enable */
{ "client.doorthrlim", &fmd_conf_uint32, "20" }, /* client door thread limit */
{ "client.error", &fmd_cerror_ops, "unload" }, /* client error policy */
{ "client.memlim", &fmd_conf_size, "10m" }, /* client allocation limit */
{ "client.evqlim", &fmd_conf_uint32, "256" }, /* client event queue limit */
{ "client.thrlim", &fmd_conf_uint32, "20" }, /* client aux thread limit */
{ "client.thrsig", &fmd_conf_signal, "SIGUSR1" }, /* fmd_thr_signal() value */
{ "client.tmrlim", &fmd_conf_uint32, "1024" }, /* client pending timer limit */
{ "client.xprtlim", &fmd_conf_uint32, "256" }, /* client transport limit */
{ "client.xprtlog", &fmd_conf_bool, NULL }, /* client transport logging? */
{ "client.xprtqlim", &fmd_conf_uint32, "1024" }, /* client transport queue li */
{ "clock", &fmd_clkmode_ops, "native" }, /* clock operation mode */
{ "conf_path", &fmd_conf_path, _fmd_conf_path }, /* root config file path */
{ "conf_file", &fmd_conf_string, "fmd.conf" }, /* root config file name */
{ "core", &fmd_conf_bool, "false" }, /* force core dump on quit */
{ "dbout", &fmd_dbout_ops, NULL }, /* daemon debug output sinks */
{ "debug", &fmd_debug_ops, NULL }, /* daemon debugging flags */
{ "dictdir", &fmd_conf_string, "usr/lib/fm/dict" }, /* default diagcode dir */
{ "domain", &fmd_conf_string, NULL }, /* domain id for de auth */
{ "fakenotpresent", &fmd_conf_uint32, "0" }, /* simulate rsrc not present */
{ "fg", &fmd_conf_bool, "false" }, /* run daemon in foreground */
{ "gc_interval", &fmd_conf_time, "1d" }, /* garbage collection intvl */
{ "ids.avg", &fmd_conf_uint32, "4" }, /* desired idspace chain len */
{ "ids.max", &fmd_conf_uint32, "1024" }, /* maximum idspace buckets */
{ "isaname", &fmd_conf_string, _fmd_isa }, /* instruction set (uname -p) */
{ "log.creator", &fmd_conf_string, "fmd" }, /* exacct log creator string */
{ "log.error", &fmd_conf_string, "var/fm/fmd/errlog" }, /* error log path */
{ "log.fault", &fmd_conf_string, "var/fm/fmd/fltlog" }, /* fault log path */
{ "log.info", &fmd_conf_string, "var/fm/fmd/infolog" }, /* info log path */
{ "log.info_hival", &fmd_conf_string, "var/fm/fmd/infolog_hival" }, /* hi pri */
{ "log.minfree", &fmd_conf_size, "2m" }, /* min log fsys free space */
{ "log.rsrc", &fmd_conf_string, "var/fm/fmd/rsrc" }, /* asru log dir path */
{ "log.tryrotate", &fmd_conf_uint32, "10" }, /* max log rotation attempts */
{ "log.waitrotate", &fmd_conf_time, "200ms" }, /* log rotation retry delay */
{ "log.xprt", &fmd_conf_string, "var/fm/fmd/xprt" }, /* transport log dir */
{ "machine", &fmd_conf_string, _fmd_uts.machine }, /* machine name (uname -m) */
{ "nodiagcode", &fmd_conf_string, "-" }, /* diagcode to use if error */
{ "repaircode", &fmd_conf_string, "-" }, /* diagcode for list.repaired */
{ "resolvecode", &fmd_conf_string, "-" }, /* diagcode for list.resolved */
{ "updatecode", &fmd_conf_string, "-" }, /* diagcode for list.updated */
{ "osrelease", &fmd_conf_string, _fmd_uts.release }, /* release (uname -r) */
{ "osversion", &fmd_conf_string, _fmd_uts.version }, /* version (uname -v) */
{ "platform", &fmd_conf_string, _fmd_plat }, /* platform string (uname -i) */
{ "plugin.close", &fmd_conf_bool, "true" }, /* dlclose plugins on fini */
{ "plugin.path", &fmd_conf_path, _fmd_plugin_path }, /* path for plugin mods */
{ "product", &fmd_conf_string, _fmd_prod }, /* product name string */
{ "rootdir", &fmd_conf_string, "" }, /* root directory for paths */
{ "rpc.adm.path", &fmd_conf_string, NULL }, /* FMD_ADM rendezvous file */
{ "rpc.adm.prog", &fmd_conf_uint32, "100169" }, /* FMD_ADM rpc program num */
{ "rpc.api.path", &fmd_conf_string, NULL }, /* FMD_API rendezvous file */
{ "rpc.api.prog", &fmd_conf_uint32, "100170" }, /* FMD_API rpc program num */
{ "rpc.rcvsize", &fmd_conf_size, "128k" }, /* rpc receive buffer size */
{ "rpc.sndsize", &fmd_conf_size, "128k" }, /* rpc send buffer size */
{ "rsrc.pollperiod", &fmd_conf_time, "1h" }, /* aged rsrcs poller period */
{ "rsrc.age", &fmd_conf_time, "30d" }, /* max age of old rsrc log */
{ "rsrc.zero", &fmd_conf_bool, "false" }, /* zero rsrc cache on start? */
{ "schemedir", &fmd_conf_string, _fmd_scheme_path }, /* path for scheme mods */
{ "self.name", &fmd_conf_string, "fmd-self-diagnosis" }, /* self-diag module */
{ "self.dict", &fmd_conf_list, "FMD.dict" }, /* self-diag dictionary list */
{ "server", &fmd_conf_string, _fmd_uts.nodename }, /* server id for de auth */
{ "strbuckets", &fmd_conf_uint32, "211" }, /* size of string hashes */
#ifdef DEBUG
{ "trace.mode", &fmd_trmode_ops, "full" }, /* trace mode: none/lite/full */
#else
{ "trace.mode", &fmd_trmode_ops, "lite" }, /* trace mode: none/lite/full */
#endif
{ "trace.recs", &fmd_conf_uint32, "128" }, /* trace records per thread */
{ "trace.frames", &fmd_conf_uint32, "16" }, /* max trace rec stack frames */
{ "uuidlen", &fmd_conf_uint32, "36" }, /* UUID ASCII string length */
{ "xprt.ttl", &fmd_conf_uint8, "1" }, /* default event time-to-live */
};
/*
* Statistics maintained by fmd itself on behalf of various global subsystems.
* NOTE: FMD_TYPE_STRING statistics should not be used here. If they are
* required in the future, the FMD_ADM_MODGSTAT service routine must change.
*/
static fmd_statistics_t _fmd_stats = {
{ "errlog.replayed", FMD_TYPE_UINT64, "total events replayed from errlog" },
{ "errlog.partials", FMD_TYPE_UINT64, "events partially committed in errlog" },
{ "errlog.enospc", FMD_TYPE_UINT64, "events not appended to errlog (ENOSPC)" },
{ "fltlog.enospc", FMD_TYPE_UINT64, "events not appended to fltlog (ENOSPC)" },
{ "log.enospc", FMD_TYPE_UINT64, "events not appended to other logs (ENOSPC)" },
{ "dr.gen", FMD_TYPE_UINT64, "dynamic reconfiguration generation" },
{ "topo.gen", FMD_TYPE_UINT64, "topology snapshot generation" },
{ "topo.drgen", FMD_TYPE_UINT64, "current topology DR generation number" },
};
/*
* SMBIOS serial numbers can contain characters (particularly ':' and ' ')
* that are invalid for the authority and can break FMRI parsing. We translate
* any invalid characters to a safe '-', as well as trimming any leading or
* trailing whitespace. Similarly, '/' can be found in some product names
* so we translate that to '-'.
*/
void
fmd_cleanup_auth_str(char *buf, const char *begin)
{
const char *end, *cp;
char c;
int i;
end = begin + strlen(begin);
while (begin < end && isspace(*begin))
begin++;
while (begin < end && isspace(*(end - 1)))
end--;
if (begin >= end)
return;
cp = begin;
for (i = 0; i < MAXNAMELEN - 1; i++) {
if (cp >= end)
break;
c = *cp;
if (c == ':' || c == '=' || c == '/' || isspace(c) ||
!isprint(c))
buf[i] = '-';
else
buf[i] = c;
cp++;
}
buf[i] = 0;
}
void
fmd_create(fmd_t *dp, const char *arg0, const char *root, const char *conf)
{
fmd_conf_path_t *pap;
char file[PATH_MAX];
const char *name, *psn, *csn;
fmd_stat_t *sp;
int i;
smbios_hdl_t *shp;
smbios_system_t s1;
smbios_info_t s2;
id_t id;
di_prom_handle_t promh = DI_PROM_HANDLE_NIL;
di_node_t rooth = DI_NODE_NIL;
char *bufp;
(void) sysinfo(SI_PLATFORM, _fmd_plat, sizeof (_fmd_plat));
(void) sysinfo(SI_ARCHITECTURE, _fmd_isa, sizeof (_fmd_isa));
(void) uname(&_fmd_uts);
if ((shp = smbios_open(NULL, SMB_VERSION, 0, NULL)) != NULL) {
if ((id = smbios_info_system(shp, &s1)) != SMB_ERR &&
smbios_info_common(shp, id, &s2) != SMB_ERR)
fmd_cleanup_auth_str(_fmd_prod, s2.smbi_product);
if ((psn = smbios_psn(shp)) != NULL)
fmd_cleanup_auth_str(_fmd_psn, psn);
if ((csn = smbios_csn(shp)) != NULL)
fmd_cleanup_auth_str(_fmd_csn, csn);
smbios_close(shp);
} else if ((rooth = di_init("/", DINFOPROP)) != DI_NODE_NIL &&
(promh = di_prom_init()) != DI_PROM_HANDLE_NIL) {
if (di_prom_prop_lookup_bytes(promh, rooth, "chassis-sn",
(unsigned char **)&bufp) != -1) {
fmd_cleanup_auth_str(_fmd_csn, bufp);
}
}
if (promh != DI_PROM_HANDLE_NIL)
di_prom_fini(promh);
if (rooth != DI_NODE_NIL)
di_fini(rooth);
bzero(dp, sizeof (fmd_t));
dp->d_version = _fmd_version;
dp->d_pname = fmd_strbasename(arg0);
dp->d_pid = getpid();
if (pthread_key_create(&dp->d_key, NULL) != 0)
fmd_error(EFMD_EXIT, "failed to create pthread key");
(void) pthread_mutex_init(&dp->d_xprt_lock, NULL);
(void) pthread_mutex_init(&dp->d_err_lock, NULL);
(void) pthread_mutex_init(&dp->d_thr_lock, NULL);
(void) pthread_mutex_init(&dp->d_mod_lock, NULL);
(void) pthread_mutex_init(&dp->d_stats_lock, NULL);
(void) pthread_mutex_init(&dp->d_topo_lock, NULL);
(void) pthread_rwlock_init(&dp->d_log_lock, NULL);
(void) pthread_rwlock_init(&dp->d_hvilog_lock, NULL);
(void) pthread_rwlock_init(&dp->d_ilog_lock, NULL);
(void) pthread_mutex_init(&dp->d_fmd_lock, NULL);
(void) pthread_cond_init(&dp->d_fmd_cv, NULL);
/*
* A small number of properties must be set manually before we open
* the root configuration file. These include any settings for our
* memory allocator and path expansion token values, because these
* values are needed by the routines in fmd_conf.c itself. After
* the root configuration file is processed, we reset these properties
* based upon the latest values from the configuration file.
*/
dp->d_alloc_msecs = 10;
dp->d_alloc_tries = 3;
dp->d_str_buckets = 211;
dp->d_rootdir = root ? root : "";
dp->d_platform = _fmd_plat;
dp->d_machine = _fmd_uts.machine;
dp->d_isaname = _fmd_isa;
dp->d_conf = fmd_conf_open(conf, sizeof (_fmd_conf) /
sizeof (_fmd_conf[0]), _fmd_conf, FMD_CONF_DEFER);
if (dp->d_conf == NULL) {
fmd_error(EFMD_EXIT,
"failed to load required configuration properties\n");
}
(void) fmd_conf_getprop(dp->d_conf, "alloc.msecs", &dp->d_alloc_msecs);
(void) fmd_conf_getprop(dp->d_conf, "alloc.tries", &dp->d_alloc_tries);
(void) fmd_conf_getprop(dp->d_conf, "strbuckets", &dp->d_str_buckets);
(void) fmd_conf_getprop(dp->d_conf, "platform", &dp->d_platform);
(void) fmd_conf_getprop(dp->d_conf, "machine", &dp->d_machine);
(void) fmd_conf_getprop(dp->d_conf, "isaname", &dp->d_isaname);
/*
* Manually specified rootdirs override config files, so only update
* d_rootdir based on the config files we parsed if no 'root' was set.
*/
if (root == NULL)
(void) fmd_conf_getprop(dp->d_conf, "rootdir", &dp->d_rootdir);
else
(void) fmd_conf_setprop(dp->d_conf, "rootdir", dp->d_rootdir);
/*
* Once the base conf file properties are loaded, lookup the values
* of $conf_path and $conf_file and merge in any other conf files.
*/
(void) fmd_conf_getprop(dp->d_conf, "conf_path", &pap);
(void) fmd_conf_getprop(dp->d_conf, "conf_file", &name);
for (i = 0; i < pap->cpa_argc; i++) {
(void) snprintf(file, sizeof (file),
"%s/%s", pap->cpa_argv[i], name);
if (access(file, F_OK) == 0)
fmd_conf_merge(dp->d_conf, file);
}
/*
* Update the value of fmd.d_fg based on "fg". We cache this property
* because it must be accessed deep within fmd at fmd_verror() time.
* Update any other properties that must be cached for performance.
*/
(void) fmd_conf_getprop(fmd.d_conf, "fg", &fmd.d_fg);
(void) fmd_conf_getprop(fmd.d_conf, "xprt.ttl", &fmd.d_xprt_ttl);
/*
* Initialize our custom libnvpair allocator and create an nvlist for
* authority elements corresponding to this instance of the daemon.
*/
(void) nv_alloc_init(&dp->d_nva, &fmd_nv_alloc_ops);
dp->d_auth = fmd_protocol_authority();
/*
* The fmd_module_t for the root module must be created manually. Most
* of it remains unused and zero, except for the few things we fill in.
*/
dp->d_rmod = fmd_zalloc(sizeof (fmd_module_t), FMD_SLEEP);
dp->d_rmod->mod_name = fmd_strdup(dp->d_pname, FMD_SLEEP);
dp->d_rmod->mod_fmri = fmd_protocol_fmri_module(dp->d_rmod);
fmd_list_append(&dp->d_mod_list, dp->d_rmod);
fmd_module_hold(dp->d_rmod);
(void) pthread_mutex_init(&dp->d_rmod->mod_lock, NULL);
(void) pthread_cond_init(&dp->d_rmod->mod_cv, NULL);
(void) pthread_mutex_init(&dp->d_rmod->mod_stats_lock, NULL);
dp->d_rmod->mod_thread = fmd_thread_xcreate(dp->d_rmod, pthread_self());
dp->d_rmod->mod_stats = fmd_zalloc(sizeof (fmd_modstat_t), FMD_SLEEP);
dp->d_rmod->mod_ustat = fmd_ustat_create();
if (pthread_setspecific(dp->d_key, dp->d_rmod->mod_thread) != 0)
fmd_error(EFMD_EXIT, "failed to attach main thread key");
if ((dp->d_stats = (fmd_statistics_t *)fmd_ustat_insert(
dp->d_rmod->mod_ustat, FMD_USTAT_NOALLOC, sizeof (_fmd_stats) /
sizeof (fmd_stat_t), (fmd_stat_t *)&_fmd_stats, NULL)) == NULL)
fmd_error(EFMD_EXIT, "failed to initialize statistics");
(void) pthread_mutex_lock(&dp->d_rmod->mod_lock);
dp->d_rmod->mod_flags |= FMD_MOD_INIT;
(void) pthread_mutex_unlock(&dp->d_rmod->mod_lock);
/*
* In addition to inserting the _fmd_stats collection of program-wide
* statistics, we also insert a statistic named after each of our
* errors and update these counts in fmd_verror() (see fmd_subr.c).
*/
dp->d_errstats = sp = fmd_zalloc(sizeof (fmd_stat_t) *
(EFMD_END - EFMD_UNKNOWN), FMD_SLEEP);
for (i = 0; i < EFMD_END - EFMD_UNKNOWN; i++, sp++) {
(void) snprintf(sp->fmds_name, sizeof (sp->fmds_name), "err.%s",
strrchr(fmd_errclass(EFMD_UNKNOWN + i), '.') + 1);
sp->fmds_type = FMD_TYPE_UINT64;
}
(void) fmd_ustat_insert(dp->d_rmod->mod_ustat, FMD_USTAT_NOALLOC,
EFMD_END - EFMD_UNKNOWN, dp->d_errstats, NULL);
}
void
fmd_destroy(fmd_t *dp)
{
fmd_module_t *mp;
fmd_case_t *cp;
int core;
(void) fmd_conf_getprop(fmd.d_conf, "core", &core);
fmd_rpc_fini();
if (dp->d_xprt_ids != NULL)
fmd_xprt_suspend_all();
/*
* Unload the self-diagnosis module first. This ensures that it does
* not get confused as we start unloading other modules, etc. We must
* hold the dispq lock as a writer while doing so since it uses d_self.
*/
if (dp->d_self != NULL) {
fmd_module_t *self;
(void) pthread_rwlock_wrlock(&dp->d_disp->dq_lock);
self = dp->d_self;
dp->d_self = NULL;
(void) pthread_rwlock_unlock(&dp->d_disp->dq_lock);
fmd_module_unload(self);
fmd_module_rele(self);
}
/*
* Unload modules in reverse order *except* for the root module, which
* is first in the list. This allows it to keep its thread and trace.
*/
for (mp = fmd_list_prev(&dp->d_mod_list); mp != dp->d_rmod; ) {
fmd_module_unload(mp);
mp = fmd_list_prev(mp);
}
if (dp->d_mod_hash != NULL) {
fmd_modhash_destroy(dp->d_mod_hash);
dp->d_mod_hash = NULL;
}
/*
* Close both log files now that modules are no longer active. We must
* set these pointers to NULL in case any subsequent errors occur.
*/
if (dp->d_errlog != NULL) {
fmd_log_rele(dp->d_errlog);
dp->d_errlog = NULL;
}
if (dp->d_fltlog != NULL) {
fmd_log_rele(dp->d_fltlog);
dp->d_fltlog = NULL;
}
/*
* Now destroy the resource cache: each ASRU contains a case reference,
* which may in turn contain a pointer to a referenced owning module.
*/
if (dp->d_asrus != NULL) {
fmd_asru_hash_destroy(dp->d_asrus);
dp->d_asrus = NULL;
}
/*
* Now that all data structures that refer to modules are torn down,
* no modules should be remaining on the module list except for d_rmod.
* If we trip one of these assertions, we're missing a rele somewhere.
*/
ASSERT(fmd_list_prev(&dp->d_mod_list) == dp->d_rmod);
ASSERT(fmd_list_next(&dp->d_mod_list) == dp->d_rmod);
/*
* Now destroy the root module. We clear its thread key first so any
* calls to fmd_trace() inside of the module code will be ignored.
*/
(void) pthread_setspecific(dp->d_key, NULL);
fmd_module_lock(dp->d_rmod);
while ((cp = fmd_list_next(&dp->d_rmod->mod_cases)) != NULL)
fmd_case_discard(cp, B_FALSE);
fmd_module_unlock(dp->d_rmod);
fmd_free(dp->d_rmod->mod_stats, sizeof (fmd_modstat_t));
dp->d_rmod->mod_stats = NULL;
(void) pthread_mutex_lock(&dp->d_rmod->mod_lock);
dp->d_rmod->mod_flags |= FMD_MOD_FINI;
(void) pthread_mutex_unlock(&dp->d_rmod->mod_lock);
fmd_module_rele(dp->d_rmod);
ASSERT(fmd_list_next(&dp->d_mod_list) == NULL);
/*
* Now destroy the remaining global data structures. If 'core' was
* set to true, force a core dump so we can check for memory leaks.
*/
if (dp->d_cases != NULL)
fmd_case_hash_destroy(dp->d_cases);
if (dp->d_disp != NULL)
fmd_dispq_destroy(dp->d_disp);
if (dp->d_timers != NULL)
fmd_timerq_destroy(dp->d_timers);
if (dp->d_schemes != NULL)
fmd_scheme_hash_destroy(dp->d_schemes);
if (dp->d_xprt_ids != NULL)
fmd_idspace_destroy(dp->d_xprt_ids);
if (dp->d_errstats != NULL) {
fmd_free(dp->d_errstats,
sizeof (fmd_stat_t) * (EFMD_END - EFMD_UNKNOWN));
}
if (dp->d_conf != NULL)
fmd_conf_close(dp->d_conf);
fmd_topo_fini();
nvlist_free(dp->d_auth);
(void) nv_alloc_fini(&dp->d_nva);
dp->d_clockops->fto_fini(dp->d_clockptr);
(void) pthread_key_delete(dp->d_key);
bzero(dp, sizeof (fmd_t));
if (core)
fmd_panic("forcing core dump at user request\n");
}
/*ARGSUSED*/
static void
fmd_gc(fmd_t *dp, id_t id, hrtime_t hrt)
{
hrtime_t delta;
if (id != 0) {
TRACE((FMD_DBG_MOD, "garbage collect start"));
fmd_modhash_apply(dp->d_mod_hash, fmd_module_gc);
TRACE((FMD_DBG_MOD, "garbage collect end"));
(void) pthread_rwlock_rdlock(&dp->d_log_lock);
fmd_log_update(dp->d_errlog);
(void) pthread_rwlock_unlock(&dp->d_log_lock);
(void) pthread_rwlock_rdlock(&dp->d_hvilog_lock);
fmd_log_update(dp->d_hvilog);
(void) pthread_rwlock_unlock(&dp->d_hvilog_lock);
(void) pthread_rwlock_rdlock(&dp->d_ilog_lock);
fmd_log_update(dp->d_ilog);
(void) pthread_rwlock_unlock(&dp->d_ilog_lock);
}
(void) fmd_conf_getprop(dp->d_conf, "gc_interval", &delta);
(void) fmd_timerq_install(dp->d_timers, dp->d_rmod->mod_timerids,
(fmd_timer_f *)fmd_gc, dp, NULL, delta);
}
/*ARGSUSED*/
static void
fmd_clear_aged_rsrcs(fmd_t *dp, id_t id, hrtime_t hrt)
{
hrtime_t period;
fmd_asru_clear_aged_rsrcs();
(void) fmd_conf_getprop(dp->d_conf, "rsrc.pollperiod", &period);
(void) fmd_timerq_install(dp->d_timers, dp->d_rmod->mod_timerids,
(fmd_timer_f *)fmd_clear_aged_rsrcs, dp, NULL, period);
}
/*
* Events are committed to the errlog after cases are checkpointed. If fmd
* crashes before an event is ever associated with a module, this function will
* be called to replay it to all subscribers. If fmd crashes in between the
* subscriber checkpointing and committing the event in the error log, the
* module will have seen the event and we don't want to replay it. So we look
* for the event in all modules and transition it to the proper state. If
* it is found, we commit it to the error log and do not replay it. The in-
* memory case search used by fmd_module_contains() et al isn't particularly
* efficient, but it is faster than doing read i/o's on every case event to
* check their status or write i/o's on every event to replay to update states.
* We can improve the efficiency of this lookup algorithm later if necessary.
*/
/*ARGSUSED*/
static void
fmd_err_replay(fmd_log_t *lp, fmd_event_t *ep, fmd_t *dp)
{
fmd_module_t *mp;
fmd_stat_t *sp;
(void) pthread_mutex_lock(&dp->d_mod_lock);
for (mp = fmd_list_next(&dp->d_mod_list);
mp != NULL; mp = fmd_list_next(mp)) {
if (fmd_module_contains(mp, ep)) {
fmd_module_hold(mp);
break;
}
}
(void) pthread_mutex_unlock(&dp->d_mod_lock);
if (mp != NULL) {
fmd_event_commit(ep);
fmd_module_rele(mp);
sp = &dp->d_stats->ds_log_partials;
} else {
fmd_dispq_dispatch(dp->d_disp, ep, FMD_EVENT_DATA(ep));
sp = &dp->d_stats->ds_log_replayed;
}
(void) pthread_mutex_lock(&dp->d_stats_lock);
sp->fmds_value.ui64++;
(void) pthread_mutex_unlock(&dp->d_stats_lock);
}
void
fmd_door_server(void *dip)
{
fmd_dprintf(FMD_DBG_XPRT, "door server starting for %p\n", dip);
(void) pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
(void) door_return(NULL, 0, NULL, 0);
}
/*
* Custom door server create callback. Any fmd services that use doors will
* require those threads to have their fmd-specific TSD initialized, etc.
* Modules should use door_xcreate and derivatives such as
* sysevent_evc_xsubscribe in order to use private doors that
* avoid this global door server function (see fmd_api_module comments).
*/
static void
fmd_door(door_info_t *dip)
{
if (fmd_thread_create(fmd.d_rmod, fmd_door_server, dip) == NULL)
fmd_panic("failed to create server for door %p", (void *)dip);
}
/*
* This signal handler is installed for the client.thrsig signal to be used to
* force an auxiliary thread to wake up from a system call and return EINTR in
* response to a module's use of fmd_thr_signal(). We also trace the event.
*/
static void
fmd_signal(int sig)
{
TRACE((FMD_DBG_MOD, "module thread received sig #%d", sig));
}
void
fmd_run(fmd_t *dp, int pfd)
{
char *nodc_key[] = { FMD_FLT_NODC, NULL };
char *repair_key[] = { FM_LIST_REPAIRED_CLASS, NULL };
char *resolve_key[] = { FM_LIST_RESOLVED_CLASS, NULL };
char *update_key[] = { FM_LIST_UPDATED_CLASS, NULL };
char code_str[128];
struct sigaction act;
int status = FMD_EXIT_SUCCESS;
const char *name;
fmd_conf_path_t *pap;
fmd_event_t *e;
int dbout;
/*
* Cache all the current debug property settings in d_fmd_debug,
* d_fmd_dbout, d_hdl_debug, and d_hdl_dbout. If a given debug mask
* is non-zero and the corresponding dbout mask is zero, set dbout
* to a sensible default value based on whether we have daemonized.
*/
(void) fmd_conf_getprop(dp->d_conf, "dbout", &dbout);
if (dp->d_fmd_debug != 0 && dbout == 0)
dp->d_fmd_dbout = dp->d_fg? FMD_DBOUT_STDERR : FMD_DBOUT_SYSLOG;
else
dp->d_fmd_dbout = dbout;
(void) fmd_conf_getprop(dp->d_conf, "client.debug", &dp->d_hdl_debug);
(void) fmd_conf_getprop(dp->d_conf, "client.dbout", &dbout);
if (dp->d_hdl_debug != 0 && dbout == 0)
dp->d_hdl_dbout = dp->d_fg? FMD_DBOUT_STDERR : FMD_DBOUT_SYSLOG;
else
dp->d_hdl_dbout = dbout;
/*
* Initialize remaining major program data structures such as the
* clock, dispatch queues, log files, module hash collections, etc.
* This work is done here rather than in fmd_create() to permit the -o
* command-line option to modify properties after fmd_create() is done.
*/
name = dp->d_rootdir != NULL &&
*dp->d_rootdir != '\0' ? dp->d_rootdir : NULL;
/*
* The clock must be initialized before fmd_topo_init() because
* fmd_topo_update() calls fmd_time_gethrtime().
*/
dp->d_clockptr = dp->d_clockops->fto_init();
fmd_topo_init();
dp->d_xprt_ids = fmd_idspace_create("xprt_ids", 1, INT_MAX);
fmd_xprt_suspend_all();
(void) door_server_create(fmd_door);
dp->d_rmod->mod_timerids = fmd_idspace_create(dp->d_pname, 1, 16);
dp->d_timers = fmd_timerq_create();
dp->d_disp = fmd_dispq_create();
dp->d_cases = fmd_case_hash_create();
/*
* The root module's mod_queue is created with limit zero, making it
* act like /dev/null; anything inserted here is simply ignored.
*/
dp->d_rmod->mod_queue = fmd_eventq_create(dp->d_rmod,
&dp->d_rmod->mod_stats->ms_evqstat, &dp->d_rmod->mod_stats_lock, 0);
/*
* Once our subsystems that use signals have been set up, install the
* signal handler for the fmd_thr_signal() API. Verify that the signal
* being used for this purpose doesn't conflict with something else.
*/
(void) fmd_conf_getprop(dp->d_conf, "client.thrsig", &dp->d_thr_sig);
if (sigaction(dp->d_thr_sig, NULL, &act) != 0) {
fmd_error(EFMD_EXIT, "invalid signal selected for "
"client.thrsig property: %d\n", dp->d_thr_sig);
}
if (act.sa_handler != SIG_IGN && act.sa_handler != SIG_DFL) {
fmd_error(EFMD_EXIT, "signal selected for client.thrsig "
"property is already in use: %d\n", dp->d_thr_sig);
}
act.sa_handler = fmd_signal;
act.sa_flags = 0;
(void) sigemptyset(&act.sa_mask);
(void) sigaction(dp->d_thr_sig, &act, NULL);
(void) fmd_conf_getprop(dp->d_conf, "schemedir", &name);
dp->d_schemes = fmd_scheme_hash_create(dp->d_rootdir, name);
(void) fmd_conf_getprop(dp->d_conf, "log.rsrc", &name);
dp->d_asrus = fmd_asru_hash_create(dp->d_rootdir, name);
(void) fmd_conf_getprop(dp->d_conf, "log.error", &name);
dp->d_errlog = fmd_log_open(dp->d_rootdir, name, FMD_LOG_ERROR);
(void) fmd_conf_getprop(dp->d_conf, "log.fault", &name);
dp->d_fltlog = fmd_log_open(dp->d_rootdir, name, FMD_LOG_FAULT);
(void) fmd_conf_getprop(dp->d_conf, "log.info_hival", &name);
dp->d_hvilog = fmd_log_open(dp->d_rootdir, name, FMD_LOG_INFO);
(void) fmd_conf_getprop(dp->d_conf, "log.info", &name);
dp->d_ilog = fmd_log_open(dp->d_rootdir, name, FMD_LOG_INFO);
if (dp->d_asrus == NULL || dp->d_errlog == NULL || dp->d_fltlog == NULL)
fmd_error(EFMD_EXIT, "failed to initialize log files\n");
/*
* Before loading modules, create an empty control event which will act
* as a global barrier for module event processing. Each module we
* load successfully will insert it at their head of their event queue,
* and then pause inside of fmd_ctl_rele() after dequeuing the event.
* This module barrier is required for two reasons:
*
* (a) During module loading, the restoration of case checkpoints may
* result in a list.* event being recreated for which the intended
* subscriber has not yet loaded depending on the load order. Such
* events could then result in spurious "no subscriber" errors.
*
* (b) During errlog replay, a sequence of errors from a long time ago
* may be replayed, and the module may attempt to install relative
* timers associated with one or more of these events. If errlog
* replay were "racing" with active module threads, an event E1
* that resulted in a relative timer T at time E1 + N nsec could
* fire prior to an event E2 being enqueued, even if the relative
* time ordering was E1 < E2 < E1 + N, causing mis-diagnosis.
*/
dp->d_mod_event = e = fmd_event_create(FMD_EVT_CTL,
FMD_HRT_NOW, NULL, fmd_ctl_init(NULL));
fmd_event_hold(e);
/*
* Once all data structures are initialized, we load all of our modules
* in order according to class in order to load up any subscriptions.
* Once built-in modules are loaded, we detach from our waiting parent.
*/
dp->d_mod_hash = fmd_modhash_create();
if (fmd_builtin_loadall(dp->d_mod_hash) != 0 && !dp->d_fg)
fmd_error(EFMD_EXIT, "failed to initialize fault manager\n");
(void) fmd_conf_getprop(dp->d_conf, "self.name", &name);
dp->d_self = fmd_modhash_lookup(dp->d_mod_hash, name);
if (dp->d_self != NULL) {
if (fmd_module_dc_key2code(dp->d_self, nodc_key, code_str,
sizeof (code_str)) == 0)
(void) fmd_conf_setprop(dp->d_conf, "nodiagcode",
code_str);
if (fmd_module_dc_key2code(dp->d_self, repair_key, code_str,
sizeof (code_str)) == 0)
(void) fmd_conf_setprop(dp->d_conf, "repaircode",
code_str);
if (fmd_module_dc_key2code(dp->d_self, resolve_key, code_str,
sizeof (code_str)) == 0)
(void) fmd_conf_setprop(dp->d_conf, "resolvecode",
code_str);
if (fmd_module_dc_key2code(dp->d_self, update_key, code_str,
sizeof (code_str)) == 0)
(void) fmd_conf_setprop(dp->d_conf, "updatecode",
code_str);
}
fmd_rpc_init();
dp->d_running = 1; /* we are now officially an active fmd */
/*
* Now that we're running, if a pipe fd was specified, write an exit
* status to it to indicate that our parent process can safely detach.
* Then proceed to loading the remaining non-built-in modules.
*/
if (pfd >= 0)
(void) write(pfd, &status, sizeof (status));
/*
* Before loading all modules, repopulate the ASRU cache from its
* persistent repository on disk. Then during module loading, the
* restoration of checkpoint files will reparent any active cases.
*/
fmd_asru_hash_refresh(dp->d_asrus);
(void) fmd_conf_getprop(dp->d_conf, "plugin.path", &pap);
fmd_modhash_loadall(dp->d_mod_hash, pap, &fmd_rtld_ops, ".so");
(void) fmd_conf_getprop(dp->d_conf, "agent.path", &pap);
fmd_modhash_loadall(dp->d_mod_hash, pap, &fmd_proc_ops, NULL);
dp->d_loaded = 1; /* modules are now loaded */
/*
* With all modules loaded, replay fault events from the ASRU cache for
* any ASRUs that must be retired, replay error events from the errlog
* that did not finish processing the last time ran, and then release
* the global module barrier by executing a final rele on d_mod_event.
*/
fmd_asru_hash_replay(dp->d_asrus);
(void) pthread_rwlock_rdlock(&dp->d_log_lock);
fmd_log_replay(dp->d_errlog, (fmd_log_f *)fmd_err_replay, dp);
fmd_log_update(dp->d_errlog);
(void) pthread_rwlock_unlock(&dp->d_log_lock);
dp->d_mod_event = NULL;
fmd_event_rele(e);
/*
* Now replay list.updated and list.repaired events
*/
fmd_case_repair_replay();
/*
* Finally, awaken any threads associated with receiving events from
* open transports and tell them to proceed with fmd_xprt_recv().
*/
fmd_xprt_resume_all();
fmd_gc(dp, 0, 0);
fmd_clear_aged_rsrcs(dp, 0, 0);
(void) pthread_mutex_lock(&dp->d_fmd_lock);
dp->d_booted = 1;
(void) pthread_cond_broadcast(&dp->d_fmd_cv);
(void) pthread_mutex_unlock(&dp->d_fmd_lock);
}
void
fmd_help(fmd_t *dp)
{
const fmd_conf_mode_t *cmp;
(void) printf("Usage: %s -o debug=mode[,mode]\n", dp->d_pname);
for (cmp = _fmd_debug_modes; cmp->cm_name != NULL; cmp++)
(void) printf("\t%s\t%s\n", cmp->cm_name, cmp->cm_desc);
}