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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 "notification.h"
#include "pmc_common.h"
#include "print.h"
#include "tlv.h"
#include "uds.h"
#include "util.h"
#include "version.h"
static struct pmc *pmc;
#define IFMT "\n\t\t"
#define P41 ((double)(1ULL << 41))
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);
}
static char *bin2str(Octet *data, int len)
{
static char buf[BIN_BUF_SIZE];
return bin2str_impl(data, len, buf, sizeof(buf));
}
static void pmc_show(struct ptp_message *msg, FILE *fp)
{
struct grandmaster_settings_np *gsn;
struct mgmt_clock_description *cd;
struct subscribe_events_np *sen;
struct management_tlv_datum *mtd;
struct port_properties_np *ppn;
struct timePropertiesDS *tp;
struct management_tlv *mgt;
struct time_status_np *tsn;
struct port_stats_np *pcp;
struct tlv_extra *extra;
struct port_ds_np *pnp;
struct defaultDS *dds;
struct currentDS *cds;
struct parentDS *pds;
struct portDS *p;
struct TLV *tlv;
int action;
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, pmc_action_string(action));
if (msg_tlv_count(msg) != 1) {
goto out;
}
extra = TAILQ_FIRST(&msg->tlv_list);
tlv = (struct TLV *) msg->management.suffix;
if (tlv->type == TLV_MANAGEMENT) {
fprintf(fp, "MANAGEMENT ");
} else if (tlv->type == TLV_MANAGEMENT_ERROR_STATUS) {
fprintf(fp, "MANAGEMENT_ERROR_STATUS ");
goto out;
} else {
fprintf(fp, "unknown-tlv ");
goto out;
}
mgt = (struct management_tlv *) msg->management.suffix;
if (mgt->length == 2 && mgt->id != TLV_NULL_MANAGEMENT) {
fprintf(fp, "empty-tlv ");
goto out;
}
switch (mgt->id) {
case TLV_CLOCK_DESCRIPTION:
cd = &extra->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 TLV_USER_DESCRIPTION:
fprintf(fp, "USER_DESCRIPTION "
IFMT "userDescription %s",
text2str(extra->cd.userDescription));
break;
case TLV_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 TLV_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 TLV_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 TLV_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 TLV_PRIORITY1:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "PRIORITY1 "
IFMT "priority1 %hhu", mtd->val);
break;
case TLV_PRIORITY2:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "PRIORITY2 "
IFMT "priority2 %hhu", mtd->val);
break;
case TLV_DOMAIN:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "DOMAIN "
IFMT "domainNumber %hhu", mtd->val);
break;
case TLV_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 TLV_CLOCK_ACCURACY:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "CLOCK_ACCURACY "
IFMT "clockAccuracy 0x%02hhx", mtd->val);
break;
case TLV_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 TLV_TIMESCALE_PROPERTIES:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "TIMESCALE_PROPERTIES "
IFMT "ptpTimescale %d", mtd->val & PTP_TIMESCALE ? 1 : 0);
break;
case TLV_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,
(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 TLV_GRANDMASTER_SETTINGS_NP:
gsn = (struct grandmaster_settings_np *) mgt->data;
fprintf(fp, "GRANDMASTER_SETTINGS_NP "
IFMT "clockClass %hhu"
IFMT "clockAccuracy 0x%02hhx"
IFMT "offsetScaledLogVariance 0x%04hx"
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",
gsn->clockQuality.clockClass,
gsn->clockQuality.clockAccuracy,
gsn->clockQuality.offsetScaledLogVariance,
gsn->utc_offset,
gsn->time_flags & LEAP_61 ? 1 : 0,
gsn->time_flags & LEAP_59 ? 1 : 0,
gsn->time_flags & UTC_OFF_VALID ? 1 : 0,
gsn->time_flags & PTP_TIMESCALE ? 1 : 0,
gsn->time_flags & TIME_TRACEABLE ? 1 : 0,
gsn->time_flags & FREQ_TRACEABLE ? 1 : 0,
gsn->time_source);
break;
case TLV_SUBSCRIBE_EVENTS_NP:
sen = (struct subscribe_events_np *) mgt->data;
fprintf(fp, "SUBSCRIBE_EVENTS_NP "
IFMT "duration %hu"
IFMT "NOTIFY_PORT_STATE %s",
sen->duration,
(sen->bitmask[0] & 1 << NOTIFY_PORT_STATE) ? "on" : "off");
break;
case TLV_SYNCHRONIZATION_UNCERTAIN_NP:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "SYNCHRONIZATION_UNCERTAIN_NP "
IFMT "uncertain %hhu", mtd->val);
break;
case TLV_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 TLV_PORT_DATA_SET_NP:
pnp = (struct port_ds_np *) mgt->data;
fprintf(fp, "PORT_DATA_SET_NP "
IFMT "neighborPropDelayThresh %u"
IFMT "asCapable %d",
pnp->neighborPropDelayThresh,
pnp->asCapable ? 1 : 0);
break;
case TLV_PORT_PROPERTIES_NP:
ppn = (struct port_properties_np *) mgt->data;
if (ppn->port_state > PS_SLAVE) {
ppn->port_state = 0;
}
fprintf(fp, "PORT_PROPERTIES_NP "
IFMT "portIdentity %s"
IFMT "portState %s"
IFMT "timestamping %s"
IFMT "interface %s",
pid2str(&ppn->portIdentity),
ps_str[ppn->port_state],
ts_str(ppn->timestamping),
text2str(&ppn->interface));
break;
case TLV_PORT_STATS_NP:
pcp = (struct port_stats_np *) mgt->data;
fprintf(fp, "PORT_STATS_NP "
IFMT "portIdentity %s"
IFMT "rx_Sync %" PRIu64
IFMT "rx_Delay_Req %" PRIu64
IFMT "rx_Pdelay_Req %" PRIu64
IFMT "rx_Pdelay_Resp %" PRIu64
IFMT "rx_Follow_Up %" PRIu64
IFMT "rx_Delay_Resp %" PRIu64
IFMT "rx_Pdelay_Resp_Follow_Up %" PRIu64
IFMT "rx_Announce %" PRIu64
IFMT "rx_Signaling %" PRIu64
IFMT "rx_Management %" PRIu64
IFMT "tx_Sync %" PRIu64
IFMT "tx_Delay_Req %" PRIu64
IFMT "tx_Pdelay_Req %" PRIu64
IFMT "tx_Pdelay_Resp %" PRIu64
IFMT "tx_Follow_Up %" PRIu64
IFMT "tx_Delay_Resp %" PRIu64
IFMT "tx_Pdelay_Resp_Follow_Up %" PRIu64
IFMT "tx_Announce %" PRIu64
IFMT "tx_Signaling %" PRIu64
IFMT "tx_Management %" PRIu64,
pid2str(&pcp->portIdentity),
pcp->stats.rxMsgType[SYNC],
pcp->stats.rxMsgType[DELAY_REQ],
pcp->stats.rxMsgType[PDELAY_REQ],
pcp->stats.rxMsgType[PDELAY_RESP],
pcp->stats.rxMsgType[FOLLOW_UP],
pcp->stats.rxMsgType[DELAY_RESP],
pcp->stats.rxMsgType[PDELAY_RESP_FOLLOW_UP],
pcp->stats.rxMsgType[ANNOUNCE],
pcp->stats.rxMsgType[SIGNALING],
pcp->stats.rxMsgType[MANAGEMENT],
pcp->stats.txMsgType[SYNC],
pcp->stats.txMsgType[DELAY_REQ],
pcp->stats.txMsgType[PDELAY_REQ],
pcp->stats.txMsgType[PDELAY_RESP],
pcp->stats.txMsgType[FOLLOW_UP],
pcp->stats.txMsgType[DELAY_RESP],
pcp->stats.txMsgType[PDELAY_RESP_FOLLOW_UP],
pcp->stats.txMsgType[ANNOUNCE],
pcp->stats.txMsgType[SIGNALING],
pcp->stats.txMsgType[MANAGEMENT]);
break;
case TLV_LOG_ANNOUNCE_INTERVAL:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "LOG_ANNOUNCE_INTERVAL "
IFMT "logAnnounceInterval %hhd", mtd->val);
break;
case TLV_ANNOUNCE_RECEIPT_TIMEOUT:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "ANNOUNCE_RECEIPT_TIMEOUT "
IFMT "announceReceiptTimeout %hhu", mtd->val);
break;
case TLV_LOG_SYNC_INTERVAL:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "LOG_SYNC_INTERVAL "
IFMT "logSyncInterval %hhd", mtd->val);
break;
case TLV_VERSION_NUMBER:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "VERSION_NUMBER "
IFMT "versionNumber %hhu", mtd->val);
break;
case TLV_DELAY_MECHANISM:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "DELAY_MECHANISM "
IFMT "delayMechanism %hhu", mtd->val);
break;
case TLV_LOG_MIN_PDELAY_REQ_INTERVAL:
mtd = (struct management_tlv_datum *) mgt->data;
fprintf(fp, "LOG_MIN_PDELAY_REQ_INTERVAL "
IFMT "logMinPdelayReqInterval %hhd", mtd->val);
break;
}
out:
fprintf(fp, "\n");
fflush(fp);
}
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"
" -f [file] read configuration from 'file'\n"
" -h prints this message and exits\n"
" -i [dev] interface device to use, default 'eth0'\n"
" for network and '/var/run/pmc.$pid' for UDS.\n"
" -s [path] server address for UDS, default '/var/run/ptp4l'.\n"
" -t [hex] transport specific field, default 0x0\n"
" -v prints the software version and exits\n"
" -z send zero length TLV values with the GET actions\n"
"\n",
progname);
}
int main(int argc, char *argv[])
{
const char *iface_name = NULL;
char *config = NULL, *progname;
int c, cnt, index, length, tmo = -1, batch_mode = 0, zero_datalen = 0;
int ret = 0;
char line[1024], *command = NULL, uds_local[MAX_IFNAME_SIZE + 1];
enum transport_type transport_type = TRANS_UDP_IPV4;
UInteger8 boundary_hops = 1, domain_number = 0, transport_specific = 0;
struct ptp_message *msg;
struct option *opts;
struct config *cfg;
#define N_FD 2
struct pollfd pollfd[N_FD];
handle_term_signals();
cfg = config_create();
if (!cfg) {
return -1;
}
opts = config_long_options(cfg);
/* Process the command line arguments. */
progname = strrchr(argv[0], '/');
progname = progname ? 1+progname : argv[0];
while (EOF != (c = getopt_long(argc, argv, "246u""b:d:f:hi:s:t:vz",
opts, &index))) {
switch (c) {
case 0:
if (config_parse_option(cfg, opts[index].name, optarg)) {
ret = -1;
goto out;
}
break;
case '2':
if (config_set_int(cfg, "network_transport", TRANS_IEEE_802_3)) {
ret = -1;
goto out;
}
break;
case '4':
if (config_set_int(cfg, "network_transport", TRANS_UDP_IPV4)) {
ret = -1;
goto out;
}
break;
case '6':
if (config_set_int(cfg, "network_transport", TRANS_UDP_IPV6)) {
ret = -1;
goto out;
}
break;
case 'u':
if (config_set_int(cfg, "network_transport", TRANS_UDS)) {
ret = -1;
goto out;
}
break;
case 'b':
boundary_hops = atoi(optarg);
break;
case 'd':
if (config_set_int(cfg, "domainNumber", atoi(optarg))) {
ret = -1;
goto out;
}
break;
case 'f':
config = optarg;
break;
case 'i':
iface_name = optarg;
break;
case 's':
if (strlen(optarg) > MAX_IFNAME_SIZE) {
fprintf(stderr, "path %s too long, max is %d\n",
optarg, MAX_IFNAME_SIZE);
config_destroy(cfg);
return -1;
}
if (config_set_string(cfg, "uds_address", optarg)) {
config_destroy(cfg);
return -1;
}
break;
case 't':
if (1 == sscanf(optarg, "%x", &c)) {
if (config_set_int(cfg, "transportSpecific", c)) {
ret = -1;
goto out;
}
}
break;
case 'v':
version_show(stdout);
config_destroy(cfg);
return 0;
case 'z':
zero_datalen = 1;
break;
case 'h':
usage(progname);
config_destroy(cfg);
return 0;
case '?':
default:
usage(progname);
config_destroy(cfg);
return -1;
}
}
if (config && (c = config_read(config, cfg))) {
config_destroy(cfg);
return -1;
}
transport_type = config_get_int(cfg, NULL, "network_transport");
transport_specific = config_get_int(cfg, NULL, "transportSpecific") << 4;
domain_number = config_get_int(cfg, NULL, "domainNumber");
if (!iface_name) {
if (transport_type == TRANS_UDS) {
snprintf(uds_local, sizeof(uds_local),
"/var/run/pmc.%d", getpid());
iface_name = uds_local;
} else {
iface_name = "eth0";
}
}
if (optind < argc) {
batch_mode = 1;
}
print_set_progname(progname);
print_set_syslog(1);
print_set_verbose(1);
pmc = pmc_create(cfg, transport_type, iface_name, boundary_hops,
domain_number, transport_specific, zero_datalen);
if (!pmc) {
fprintf(stderr, "failed to create pmc\n");
config_destroy(cfg);
return -1;
}
pollfd[0].fd = batch_mode ? -1 : STDIN_FILENO;
pollfd[1].fd = pmc_get_transport_fd(pmc);
while (is_running()) {
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");
ret = -1;
break;
}
} 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 (pmc_do_command(pmc, 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);
msg_cleanup();
out:
config_destroy(cfg);
return ret;
}
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