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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (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 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* PICL plug-in that listens to sysevent and posts picl events
*/
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <limits.h>
#include <stdlib.h>
#include <assert.h>
#include <alloca.h>
#include <unistd.h>
#include <stropts.h>
#include <syslog.h>
#include <libdevinfo.h>
#include <sys/time.h>
#include <fcntl.h>
#include <picl.h>
#include <picltree.h>
#include <sys/types.h>
#include <sys/sysinfo.h>
#include <dirent.h>
#include <libintl.h>
#include <sys/sunddi.h>
#include <sys/stat.h>
#include <libsysevent.h>
#include <libnvpair.h>
#include "piclevent.h"
/*
* Plugin registration entry points
*/
static void eventplugin_register(void);
static void eventplugin_init(void);
static void eventplugin_fini(void);
#pragma init(eventplugin_register)
static picld_plugin_reg_t my_reg_info = {
PICLD_PLUGIN_VERSION_1,
PICLD_PLUGIN_CRITICAL,
"SUNW_piclevent plugin for sysevents",
eventplugin_init,
eventplugin_fini
};
/*
* Log message texts
*/
#define EVT_THR_FAILED gettext("Event thread create failed!\n")
#define EVT_OPEN_FAILED gettext("PICL SLM door create failed\n")
static int door_id = -1;
#define SUNW_PICLEVENT_PLUGIN_DEBUG "SUNW_PICLEVENT_PLUGIN_DEBUG"
static int piclevent_debug = 0;
/*
* completion handler for the posted picl event
*/
/*ARGSUSED*/
static void
piclevent_completion_handler(char *ename, void *earg, size_t size)
{
free(earg);
free(ename);
}
/*
* This function posts the incoming piclevent
* It packs the nvlist and posts it to PICL
*/
static void
parse_piclevent(nvlist_t *nvlp)
{
char *enval;
char *ename;
size_t nvl_size;
char *packed_nvl;
int err;
if (nvlist_lookup_string(nvlp, PICLEVENTARG_EVENT_NAME, &enval))
return;
packed_nvl = NULL;
if (nvlist_pack(nvlp, &packed_nvl, &nvl_size, NV_ENCODE_NATIVE, 0))
return;
ename = strdup(enval);
if (ename == NULL) {
free(packed_nvl);
return;
}
if (piclevent_debug) {
syslog(LOG_INFO, "piclevent: posting ename:%s packed_nvl:%p "
"nvl_size:0x%x\n", ename, packed_nvl, nvl_size);
}
err = ptree_post_event(ename, packed_nvl, nvl_size,
piclevent_completion_handler);
if (err != PICL_SUCCESS) {
if (piclevent_debug)
syslog(LOG_INFO,
"piclevent: posting ename:%s failed err:%d\n",
ename, err);
free(ename);
free(packed_nvl);
}
}
/*
* This is the PICL SLM door handler. It parses the event tuple received
* and posts an event to refresh the PICL tree.
*/
/*ARGSUSED*/
static void
event_handler(void *cookie, char *argp, size_t asize,
door_desc_t *dp, uint_t n_desc)
{
door_cred_t cred;
nvlist_t *nvlp;
char *dtype;
if (piclevent_debug)
syslog(LOG_INFO,
"piclevent: got SLM event cookie:%p evarg:%p size:0x%x\n",
cookie, argp, asize);
if ((door_id < 0) || (argp == NULL) || (door_cred(&cred) < 0) ||
(cred.dc_euid != 0))
(void) door_return(argp, 0, NULL, 0);
if (nvlist_unpack(argp, asize, &nvlp, 0))
(void) door_return(argp, 0, NULL, 0);
if (nvlist_lookup_string(nvlp, PICLEVENTARG_DATA_TYPE, &dtype)) {
nvlist_free(nvlp);
(void) door_return(argp, 0, NULL, 0);
}
if (strcmp(dtype, PICLEVENTARG_PICLEVENT_DATA) == 0)
parse_piclevent(nvlp);
/*
* ignore other event data types
*/
nvlist_free(nvlp);
(void) door_return(argp, 0, NULL, 0);
}
/*
* Create the slm to picl plugin door
*/
static int
setup_door(void)
{
struct stat stbuf;
/*
* Create the door
*/
door_id = door_create(event_handler, PICLEVENT_DOOR_COOKIE,
DOOR_REFUSE_DESC | DOOR_NO_CANCEL);
if (door_id < 0)
return (-1);
if (stat(PICLEVENT_DOOR, &stbuf) < 0) {
int newfd;
if ((newfd = creat(PICLEVENT_DOOR, 0444)) < 0) {
(void) door_revoke(door_id);
door_id = -1;
return (-1);
}
(void) close(newfd);
}
if (fattach(door_id, PICLEVENT_DOOR) < 0) {
if ((errno != EBUSY) || (fdetach(PICLEVENT_DOOR) < 0) ||
(fattach(door_id, PICLEVENT_DOOR) < 0)) {
(void) door_revoke(door_id);
door_id = -1;
return (-1);
}
}
return (0);
}
/*
* This function is executed as part of .init when the plugin is
* dlopen()ed
*/
static void
eventplugin_register(void)
{
if (getenv(SUNW_PICLEVENT_PLUGIN_DEBUG))
piclevent_debug = 1;
(void) picld_plugin_register(&my_reg_info);
}
/*
* This function is the init entry point of the plugin.
* It creates the slm to picl plugin door.
*/
static void
eventplugin_init(void)
{
if (setup_door() < 0) {
syslog(LOG_ERR, EVT_OPEN_FAILED);
}
}
/*
* This function is the fini entry point of the plugin
*/
static void
eventplugin_fini(void)
{
if (door_id >= 0) {
(void) door_revoke(door_id);
door_id = -1;
}
}
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