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linuxptp/pmc.c

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/**
* @file pmc.c
* @brief PTP management client program
* @note Copyright (C) 2012 Richard Cochran <richardcochran@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <errno.h>
#include <poll.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <inttypes.h>
#include <arpa/inet.h>
#include "ds.h"
#include "fsm.h"
#include "pmc_common.h"
#include "print.h"
#include "tlv.h"
#include "util.h"
#include "version.h"
#define BAD_ACTION -1
#define BAD_ID -1
#define AMBIGUOUS_ID -2
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#define P41 ((double)(1ULL << 41))
static struct pmc *pmc;
static void do_get_action(int action, int index);
static void not_supported(int action, int index);
static void null_management(int action, int index);
struct management_id {
char name[64];
int code;
void (*func)(int action, int index);
};
struct management_id idtab[] = {
/* Clock management ID values */
{ "USER_DESCRIPTION", USER_DESCRIPTION, do_get_action },
{ "SAVE_IN_NON_VOLATILE_STORAGE", SAVE_IN_NON_VOLATILE_STORAGE, not_supported },
{ "RESET_NON_VOLATILE_STORAGE", RESET_NON_VOLATILE_STORAGE, not_supported },
{ "INITIALIZE", INITIALIZE, not_supported },
{ "FAULT_LOG", FAULT_LOG, not_supported },
{ "FAULT_LOG_RESET", FAULT_LOG_RESET, not_supported },
{ "DEFAULT_DATA_SET", DEFAULT_DATA_SET, do_get_action },
{ "CURRENT_DATA_SET", CURRENT_DATA_SET, do_get_action },
{ "PARENT_DATA_SET", PARENT_DATA_SET, do_get_action },
{ "TIME_PROPERTIES_DATA_SET", TIME_PROPERTIES_DATA_SET, do_get_action },
{ "PRIORITY1", PRIORITY1, do_get_action },
{ "PRIORITY2", PRIORITY2, do_get_action },
{ "DOMAIN", DOMAIN, do_get_action },
{ "SLAVE_ONLY", SLAVE_ONLY, do_get_action },
{ "TIME", TIME, not_supported },
{ "CLOCK_ACCURACY", CLOCK_ACCURACY, do_get_action },
{ "UTC_PROPERTIES", UTC_PROPERTIES, not_supported },
{ "TRACEABILITY_PROPERTIES", TRACEABILITY_PROPERTIES, do_get_action },
{ "TIMESCALE_PROPERTIES", TIMESCALE_PROPERTIES, do_get_action },
{ "PATH_TRACE_LIST", PATH_TRACE_LIST, not_supported },
{ "PATH_TRACE_ENABLE", PATH_TRACE_ENABLE, not_supported },
{ "GRANDMASTER_CLUSTER_TABLE", GRANDMASTER_CLUSTER_TABLE, not_supported },
{ "ACCEPTABLE_MASTER_TABLE", ACCEPTABLE_MASTER_TABLE, not_supported },
{ "ACCEPTABLE_MASTER_MAX_TABLE_SIZE", ACCEPTABLE_MASTER_MAX_TABLE_SIZE, not_supported },
{ "ALTERNATE_TIME_OFFSET_ENABLE", ALTERNATE_TIME_OFFSET_ENABLE, not_supported },
{ "ALTERNATE_TIME_OFFSET_NAME", ALTERNATE_TIME_OFFSET_NAME, not_supported },
{ "ALTERNATE_TIME_OFFSET_MAX_KEY", ALTERNATE_TIME_OFFSET_MAX_KEY, not_supported },
{ "ALTERNATE_TIME_OFFSET_PROPERTIES", ALTERNATE_TIME_OFFSET_PROPERTIES, not_supported },
{ "TRANSPARENT_CLOCK_DEFAULT_DATA_SET", TRANSPARENT_CLOCK_DEFAULT_DATA_SET, not_supported },
{ "PRIMARY_DOMAIN", PRIMARY_DOMAIN, not_supported },
{ "TIME_STATUS_NP", TIME_STATUS_NP, do_get_action },
/* Port management ID values */
{ "NULL_MANAGEMENT", NULL_MANAGEMENT, null_management },
{ "CLOCK_DESCRIPTION", CLOCK_DESCRIPTION, do_get_action },
{ "PORT_DATA_SET", PORT_DATA_SET, do_get_action },
{ "LOG_ANNOUNCE_INTERVAL", LOG_ANNOUNCE_INTERVAL, do_get_action },
{ "ANNOUNCE_RECEIPT_TIMEOUT", ANNOUNCE_RECEIPT_TIMEOUT, not_supported },
{ "LOG_SYNC_INTERVAL", LOG_SYNC_INTERVAL, not_supported },
{ "VERSION_NUMBER", VERSION_NUMBER, not_supported },
{ "ENABLE_PORT", ENABLE_PORT, not_supported },
{ "DISABLE_PORT", DISABLE_PORT, not_supported },
{ "UNICAST_NEGOTIATION_ENABLE", UNICAST_NEGOTIATION_ENABLE, not_supported },
{ "UNICAST_MASTER_TABLE", UNICAST_MASTER_TABLE, not_supported },
{ "UNICAST_MASTER_MAX_TABLE_SIZE", UNICAST_MASTER_MAX_TABLE_SIZE, not_supported },
{ "ACCEPTABLE_MASTER_TABLE_ENABLED", ACCEPTABLE_MASTER_TABLE_ENABLED, not_supported },
{ "ALTERNATE_MASTER", ALTERNATE_MASTER, not_supported },
{ "TRANSPARENT_CLOCK_PORT_DATA_SET", TRANSPARENT_CLOCK_PORT_DATA_SET, not_supported },
{ "DELAY_MECHANISM", DELAY_MECHANISM, not_supported },
{ "LOG_MIN_PDELAY_REQ_INTERVAL", LOG_MIN_PDELAY_REQ_INTERVAL, not_supported },
};
static char *action_string[] = {
"GET",
"SET",
"RESPONSE",
"COMMAND",
"ACKNOWLEDGE",
};
#define IFMT "\n\t\t"
static char *text2str(struct PTPText *text) {
static struct static_ptp_text s;
s.max_symbols = -1;
static_ptp_text_copy(&s, text);
return (char*)(s.text);
}
#define MAX_PRINT_BYTES 16
#define BIN_BUF_SIZE (MAX_PRINT_BYTES * 3 + 1)
static char *bin2str_impl(Octet *data, int len, char *buf, int buf_len) {
int i, offset = 0;
if (len > MAX_PRINT_BYTES)
len = MAX_PRINT_BYTES;
buf[0] = '\0';
if (len)
offset += snprintf(buf, buf_len, "%02hhx", data[0]);
for (i = 1; i < len; i++) {
if (offset >= buf_len)
/* truncated output */
break;
offset += snprintf(buf + offset, buf_len - offset, ":%02hhx", data[i]);
}
return buf;
}
static char *bin2str(Octet *data, int len) {
static char buf[BIN_BUF_SIZE];
return bin2str_impl(data, len, buf, sizeof(buf));
}
static uint16_t align16(uint16_t *p) {
uint16_t v;
memcpy(&v, p, sizeof(v));
return v;
}
static char *portaddr2str(struct PortAddress *addr) {
static char buf[BIN_BUF_SIZE];
switch(align16(&addr->networkProtocol)) {
case TRANS_UDP_IPV4:
if (align16(&addr->addressLength) == 4
&& inet_ntop(AF_INET, addr->address, buf, sizeof(buf)))
return buf;
break;
case TRANS_UDP_IPV6:
if (align16(&addr->addressLength) == 16
&& inet_ntop(AF_INET6, addr->address, buf, sizeof(buf)))
return buf;
break;
}
bin2str_impl(addr->address, align16(&addr->addressLength), buf, sizeof(buf));
return buf;
}
static void pmc_show(struct ptp_message *msg, FILE *fp)
{
int action;
struct TLV *tlv;
struct management_tlv *mgt;
struct management_tlv_datum *mtd;
struct defaultDS *dds;
struct currentDS *cds;
struct parentDS *pds;
struct timePropertiesDS *tp;
struct time_status_np *tsn;
struct mgmt_clock_description *cd;
struct portDS *p;
if (msg_type(msg) != MANAGEMENT) {
return;
}
action = management_action(msg);
if (action < GET || action > ACKNOWLEDGE) {
return;
}
fprintf(fp, "\t%s seq %hu %s ",
pid2str(&msg->header.sourcePortIdentity),
msg->header.sequenceId, action_string[action]);
if (msg->tlv_count != 1) {
goto out;
}
tlv = (struct TLV *) msg->management.suffix;
if (tlv->type == TLV_MANAGEMENT) {
fprintf(fp, "MANAGMENT ");
} else if (tlv->type == TLV_MANAGEMENT_ERROR_STATUS) {
fprintf(fp, "MANAGMENT_ERROR_STATUS ");
goto out;
} else {
fprintf(fp, "unknown-tlv ");
}
mgt = (struct management_tlv *) msg->management.suffix;
switch (mgt->id) {
case CLOCK_DESCRIPTION:
cd = &msg->last_tlv.cd;
fprintf(fp, "CLOCK_DESCRIPTION "
IFMT "clockType 0x%hx"
IFMT "physicalLayerProtocol %s"
IFMT "physicalAddress %s"
IFMT "protocolAddress %hu %s",
align16(cd->clockType),
text2str(cd->physicalLayerProtocol),
bin2str(cd->physicalAddress->address,
align16(&cd->physicalAddress->length)),
align16(&cd->protocolAddress->networkProtocol),
portaddr2str(cd->protocolAddress));
fprintf(fp, IFMT "manufacturerId %s"
IFMT "productDescription %s",
bin2str(cd->manufacturerIdentity, OUI_LEN),
text2str(cd->productDescription));
fprintf(fp, IFMT "revisionData %s",
text2str(cd->revisionData));
fprintf(fp, IFMT "userDescription %s"
IFMT "profileId %s",
text2str(cd->userDescription),
bin2str(cd->profileIdentity, PROFILE_ID_LEN));
break;
case USER_DESCRIPTION:
fprintf(fp, "USER_DESCRIPTION "
IFMT "userDescription %s",
text2str(msg->last_tlv.cd.userDescription));
break;
case DEFAULT_DATA_SET:
dds = (struct defaultDS *) mgt->data;
fprintf(fp, "DEFAULT_DATA_SET "
IFMT "twoStepFlag %d"
IFMT "slaveOnly %d"
IFMT "numberPorts %hu"
IFMT "priority1 %hhu"
IFMT "clockClass %hhu"
IFMT "clockAccuracy 0x%02hhx"
IFMT "offsetScaledLogVariance 0x%04hx"
IFMT "priority2 %hhu"
IFMT "clockIdentity %s"
IFMT "domainNumber %hhu",
dds->flags & DDS_TWO_STEP_FLAG ? 1 : 0,
dds->flags & DDS_SLAVE_ONLY ? 1 : 0,
dds->numberPorts,
dds->priority1,
dds->clockQuality.clockClass,
dds->clockQuality.clockAccuracy,
dds->clockQuality.offsetScaledLogVariance,
dds->priority2,
cid2str(&dds->clockIdentity),
dds->domainNumber);
break;
case CURRENT_DATA_SET:
cds = (struct currentDS *) mgt->data;
fprintf(fp, "CURRENT_DATA_SET "
IFMT "stepsRemoved %hd"
IFMT "offsetFromMaster %.1f"
IFMT "meanPathDelay %.1f",
cds->stepsRemoved, cds->offsetFromMaster / 65536.0,
cds->meanPathDelay / 65536.0);
break;
case PARENT_DATA_SET:
pds = (struct parentDS *) mgt->data;
fprintf(fp, "PARENT_DATA_SET "
IFMT "parentPortIdentity %s"
IFMT "parentStats %hhu"
IFMT "observedParentOffsetScaledLogVariance 0x%04hx"
IFMT "observedParentClockPhaseChangeRate 0x%08x"
IFMT "grandmasterPriority1 %hhu"
IFMT "gm.ClockClass %hhu"
IFMT "gm.ClockAccuracy 0x%02hhx"
IFMT "gm.OffsetScaledLogVariance 0x%04hx"
IFMT "grandmasterPriority2 %hhu"
IFMT "grandmasterIdentity %s",
pid2str(&pds->parentPortIdentity),
pds->parentStats,
pds->observedParentOffsetScaledLogVariance,
pds->observedParentClockPhaseChangeRate,
pds->grandmasterPriority1,
pds->grandmasterClockQuality.clockClass,
pds->grandmasterClockQuality.clockAccuracy,
pds->grandmasterClockQuality.offsetScaledLogVariance,
pds->grandmasterPriority2,
cid2str(&pds->grandmasterIdentity));
break;
case TIME_PROPERTIES_DATA_SET:
tp = (struct timePropertiesDS *) mgt->data;
fprintf(fp, "TIME_PROPERTIES_DATA_SET "
IFMT "currentUtcOffset %hd"
IFMT "leap61 %d"
IFMT "leap59 %d"
IFMT "currentUtcOffsetValid %d"
IFMT "ptpTimescale %d"
IFMT "timeTraceable %d"
IFMT "frequencyTraceable %d"
IFMT "timeSource 0x%02hhx",
tp->currentUtcOffset,
tp->flags & LEAP_61 ? 1 : 0,
tp->flags & LEAP_59 ? 1 : 0,
tp->flags & UTC_OFF_VALID ? 1 : 0,
tp->flags & PTP_TIMESCALE ? 1 : 0,
tp->flags & TIME_TRACEABLE ? 1 : 0,
tp->flags & FREQ_TRACEABLE ? 1 : 0,
tp->timeSource);
break;
case PRIORITY1:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "PRIORITY1 "
IFMT "priority1 %hhu", mtd->val);
break;
case PRIORITY2:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "PRIORITY2 "
IFMT "priority2 %hhu", mtd->val);
break;
case DOMAIN:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "DOMAIN "
IFMT "domainNumber %hhu", mtd->val);
break;
case SLAVE_ONLY:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "SLAVE_ONLY "
IFMT "slaveOnly %d", mtd->val & DDS_SLAVE_ONLY ? 1 : 0);
break;
case CLOCK_ACCURACY:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "CLOCK_ACCURACY "
IFMT "clockAccuracy 0x%02hhx", mtd->val);
break;
case TRACEABILITY_PROPERTIES:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "TRACEABILITY_PROPERTIES "
IFMT "timeTraceable %d"
IFMT "frequencyTraceable %d",
mtd->val & TIME_TRACEABLE ? 1 : 0,
mtd->val & FREQ_TRACEABLE ? 1 : 0);
break;
case TIMESCALE_PROPERTIES:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "TIMESCALE_PROPERTIES "
IFMT "ptpTimescale %d", mtd->val & PTP_TIMESCALE ? 1 : 0);
break;
case TIME_STATUS_NP:
tsn = (struct time_status_np *) mgt->data;
fprintf(fp, "TIME_STATUS_NP "
IFMT "master_offset %" PRId64
IFMT "ingress_time %" PRId64
IFMT "cumulativeScaledRateOffset %+.9f"
IFMT "scaledLastGmPhaseChange %d"
IFMT "gmTimeBaseIndicator %hu"
IFMT "lastGmPhaseChange 0x%04hx'%016" PRIx64 ".%04hx"
IFMT "gmPresent %s"
IFMT "gmIdentity %s",
tsn->master_offset,
tsn->ingress_time,
1.0 + (tsn->cumulativeScaledRateOffset + 0.0) / P41,
tsn->scaledLastGmPhaseChange,
tsn->gmTimeBaseIndicator,
tsn->lastGmPhaseChange.nanoseconds_msb,
tsn->lastGmPhaseChange.nanoseconds_lsb,
tsn->lastGmPhaseChange.fractional_nanoseconds,
tsn->gmPresent ? "true" : "false",
cid2str(&tsn->gmIdentity));
break;
case PORT_DATA_SET:
p = (struct portDS *) mgt->data;
if (p->portState > PS_SLAVE) {
p->portState = 0;
}
fprintf(fp, "PORT_DATA_SET "
IFMT "portIdentity %s"
IFMT "portState %s"
IFMT "logMinDelayReqInterval %hhd"
IFMT "peerMeanPathDelay %" PRId64
IFMT "logAnnounceInterval %hhd"
IFMT "announceReceiptTimeout %hhu"
IFMT "logSyncInterval %hhd"
IFMT "delayMechanism %hhu"
IFMT "logMinPdelayReqInterval %hhd"
IFMT "versionNumber %hhu",
pid2str(&p->portIdentity), ps_str[p->portState],
p->logMinDelayReqInterval, p->peerMeanPathDelay >> 16,
p->logAnnounceInterval, p->announceReceiptTimeout,
p->logSyncInterval, p->delayMechanism,
p->logMinPdelayReqInterval, p->versionNumber);
break;
case LOG_ANNOUNCE_INTERVAL:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "LOG_ANNOUNCE_INTERVAL "
IFMT "logAnnounceInterval %hhd", mtd->val);
break;
}
out:
fprintf(fp, "\n");
fflush(fp);
}
static void do_get_action(int action, int index)
{
if (action == GET)
pmc_send_get_action(pmc, idtab[index].code);
else
fprintf(stderr, "%s only allows GET\n", idtab[index].name);
}
static void not_supported(int action, int index)
{
fprintf(stdout, "sorry, %s not supported yet\n", idtab[index].name);
}
static void null_management(int action, int index)
{
if (action == GET)
pmc_send_get_action(pmc, idtab[index].code);
else
puts("non-get actions still todo");
}
static int parse_action(char *s)
{
int len = strlen(s);
if (0 == strncasecmp(s, "GET", len))
return GET;
else if (0 == strncasecmp(s, "SET", len))
return SET;
else if (0 == strncasecmp(s, "CMD", len))
return COMMAND;
else if (0 == strncasecmp(s, "COMMAND", len))
return COMMAND;
return BAD_ACTION;
}
static int parse_id(char *s)
{
int i, index = BAD_ID, len = strlen(s);
/* check for exact match */
for (i = 0; i < ARRAY_SIZE(idtab); i++) {
if (strcasecmp(s, idtab[i].name) == 0) {
return i;
}
}
/* look for a unique prefix match */
for (i = 0; i < ARRAY_SIZE(idtab); i++) {
if (0 == strncasecmp(s, idtab[i].name, len)) {
if (index == BAD_ID)
index = i;
else
return AMBIGUOUS_ID;
}
}
return index;
}
static void print_help(FILE *fp)
{
int i;
fprintf(fp, "\n");
for (i = 0; i < ARRAY_SIZE(idtab); i++) {
if (idtab[i].func != not_supported)
fprintf(fp, "\t[action] %s\n", idtab[i].name);
}
fprintf(fp, "\n");
fprintf(fp, "\tThe [action] can be GET, SET, CMD, or COMMAND\n");
fprintf(fp, "\tCommands are case insensitive and may be abbreviated.\n");
fprintf(fp, "\n");
}
static int do_command(char *str)
{
int action, id;
char action_str[10+1] = {0}, id_str[64+1] = {0};
if (0 == strncasecmp(str, "HELP", strlen(str))) {
print_help(stdout);
return 0;
}
if (2 != sscanf(str, " %10s %64s", action_str, id_str))
return -1;
action = parse_action(action_str);
id = parse_id(id_str);
if (action == BAD_ACTION || id == BAD_ID)
return -1;
if (id == AMBIGUOUS_ID) {
fprintf(stdout, "id %s is too ambiguous\n", id_str);
return 0;
}
fprintf(stdout, "sending: %s %s\n",
action_string[action], idtab[id].name);
idtab[id].func(action, id);
return 0;
}
static void usage(char *progname)
{
fprintf(stderr,
"\nusage: %s [options] [commands]\n\n"
" Network Transport\n\n"
" -2 IEEE 802.3\n"
" -4 UDP IPV4 (default)\n"
" -6 UDP IPV6\n"
" -u UDS local\n\n"
" Other Options\n\n"
" -b [num] boundary hops, default 1\n"
" -d [num] domain number, default 0\n"
" -h prints this message and exits\n"
" -i [dev] interface device to use, default 'eth0'\n"
" for network and '/var/run/pmc' for UDS.\n"
" -t [hex] transport specific field, default 0x0\n"
" -v prints the software version and exits\n"
"\n",
progname);
}
int main(int argc, char *argv[])
{
char *iface_name = NULL, *progname;
int c, cnt, length, tmo = -1, batch_mode = 0;
char line[1024], *command = NULL;
enum transport_type transport_type = TRANS_UDP_IPV4;
UInteger8 boundary_hops = 1, domain_number = 0, transport_specific = 0;
struct ptp_message *msg;
#define N_FD 2
struct pollfd pollfd[N_FD];
/* Process the command line arguments. */
progname = strrchr(argv[0], '/');
progname = progname ? 1+progname : argv[0];
while (EOF != (c = getopt(argc, argv, "246u""b:d:hi:t:v"))) {
switch (c) {
case '2':
transport_type = TRANS_IEEE_802_3;
break;
case '4':
transport_type = TRANS_UDP_IPV4;
break;
case '6':
transport_type = TRANS_UDP_IPV6;
break;
case 'u':
transport_type = TRANS_UDS;
break;
case 'b':
boundary_hops = atoi(optarg);
break;
case 'd':
domain_number = atoi(optarg);
break;
case 'i':
iface_name = optarg;
break;
case 't':
if (1 == sscanf(optarg, "%x", &c))
transport_specific = c << 4;
break;
case 'v':
version_show(stdout);
return 0;
case 'h':
usage(progname);
return 0;
case '?':
usage(progname);
return -1;
default:
usage(progname);
return -1;
}
}
if (!iface_name) {
iface_name = transport_type == TRANS_UDS ? "/var/run/pmc" : "eth0";
}
if (optind < argc) {
batch_mode = 1;
}
print_set_progname(progname);
print_set_syslog(1);
print_set_verbose(1);
pmc = pmc_create(transport_type, iface_name, boundary_hops, domain_number, transport_specific);
if (!pmc) {
fprintf(stderr, "failed to create pmc\n");
return -1;
}
pollfd[0].fd = batch_mode ? -1 : STDIN_FILENO;
pollfd[1].fd = pmc_get_transport_fd(pmc);
while (1) {
if (batch_mode && !command) {
if (optind < argc) {
command = argv[optind++];
} else {
/* No more commands, wait a bit for
any outstanding replies and exit. */
tmo = 100;
}
}
pollfd[0].events = 0;
pollfd[1].events = POLLIN | POLLPRI;
if (!batch_mode && !command)
pollfd[0].events |= POLLIN | POLLPRI;
if (command)
pollfd[1].events |= POLLOUT;
cnt = poll(pollfd, N_FD, tmo);
if (cnt < 0) {
if (EINTR == errno) {
continue;
} else {
pr_emerg("poll failed");
return -1;
}
} else if (!cnt) {
break;
}
if (pollfd[0].revents & POLLHUP) {
if (tmo == -1) {
/* Wait a bit longer for outstanding replies. */
tmo = 100;
pollfd[0].fd = -1;
pollfd[0].events = 0;
} else {
break;
}
}
if (pollfd[0].revents & (POLLIN|POLLPRI)) {
if (!fgets(line, sizeof(line), stdin)) {
break;
}
length = strlen(line);
if (length < 2) {
continue;
}
line[length - 1] = 0;
command = line;
}
if (pollfd[1].revents & POLLOUT) {
if (do_command(command)) {
fprintf(stderr, "bad command: %s\n", command);
}
command = NULL;
}
if (pollfd[1].revents & (POLLIN|POLLPRI)) {
msg = pmc_recv(pmc);
if (msg) {
pmc_show(msg, stdout);
msg_put(msg);
}
}
}
pmc_destroy(pmc);
return 0;
}
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