From 4f6f1e1cbafa3b42cec3a70eda8af4dce0ecec68 Mon Sep 17 00:00:00 2001
From: Richard Cochran <richardcochran@gmail.com>
Date: Sun, 29 Sep 2013 20:58:17 +0200
Subject: [PATCH] pmc: add a command line option to select the server's UDS
 address.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
---
 pmc.8 |  8 +++++++-
 pmc.c | 12 +++++++++++-
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/pmc.8 b/pmc.8
index d91c657..759ed84 100644
--- a/pmc.8
+++ b/pmc.8
@@ -1,4 +1,4 @@
-.TH PMC 8 "July 2013" "linuxptp"
+.TH PMC 8 "October 2013" "linuxptp"
 .SH NAME
 pmc \- PTP management client
 
@@ -19,6 +19,8 @@ pmc \- PTP management client
 ] [
 .BI \-i " interface"
 ] [
+.BI \-s " uds-address"
+] [
 .BI \-t " transport-specific-field"
 ] [
 .B \-v
@@ -69,6 +71,10 @@ Specify the domain number in sent messages. The default is 0.
 Specify the network interface. The default is /var/run/pmc for the Unix Domain
 Socket transport and eth0 for the other transports.
 .TP
+.BI \-s " uds-address"
+Specifies the address of the server's UNIX domain socket.
+The default is /var/run/ptp4l.
+.TP
 .BI \-t " transport-specific-field"
 Specify the transport specific field in sent messages as a hexadecimal number.
 The default is 0x0.
diff --git a/pmc.c b/pmc.c
index 3a6d697..c9851cd 100644
--- a/pmc.c
+++ b/pmc.c
@@ -31,6 +31,7 @@
 #include "pmc_common.h"
 #include "print.h"
 #include "tlv.h"
+#include "uds.h"
 #include "util.h"
 #include "version.h"
 
@@ -676,6 +677,7 @@ static void usage(char *progname)
 		" -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"
+		" -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"
@@ -697,7 +699,7 @@ int main(int argc, char *argv[])
 	/* 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:vz"))) {
+	while (EOF != (c = getopt(argc, argv, "246u""b:d:hi:s:t:vz"))) {
 		switch (c) {
 		case '2':
 			transport_type = TRANS_IEEE_802_3;
@@ -720,6 +722,14 @@ int main(int argc, char *argv[])
 		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);
+				return -1;
+			}
+			strncpy(uds_path, optarg, MAX_IFNAME_SIZE);
+			break;
 		case 't':
 			if (1 == sscanf(optarg, "%x", &c))
 				transport_specific = c << 4;