X-Git-Url: http://git.alex.org.uk

diff --git a/nbd-client.c b/nbd-client.c
index 0fc9c34..2456c59 100644
--- a/nbd-client.c
+++ b/nbd-client.c
@@ -150,7 +150,7 @@ void negotiate(int sock, u64 *rsize64, u32 *flags, char* name) {
 		if(read(sock, &tmp, sizeof(uint16_t)) < 0) {
 			err("Failed reading flags: %m");
 		}
-		*flags = ((u32)ntohs(tmp)) << 16;
+		*flags = ((u32)ntohs(tmp));
 
 		/* reserved for future use*/
 		if (write(sock, &reserved, sizeof(reserved)) < 0)
@@ -240,6 +240,9 @@ void setsizes(int nbd, u64 size64, int blocksize, u32 flags) {
 
 	ioctl(nbd, NBD_CLEAR_SOCK);
 
+	/* ignore error as kernel may not support */
+	ioctl(nbd, NBD_SET_FLAGS, (unsigned long) flags);
+
 	if (ioctl(nbd, BLKROSET, (unsigned long) &read_only) < 0)
 		err("Unable to set read-only attribute for device");
 }
@@ -275,7 +278,8 @@ void usage(char* errmsg, ...) {
 	} else {
 		fprintf(stderr, "nbd-client version %s\n", PACKAGE_VERSION);
 	}
-	fprintf(stderr, "Usage: nbd-client host port nbd_device [-block-size|-b block size] [-timeout|-t timeout] [-swap|-s] [-sdp|-S] [-persist|-p] [-nofork|-n] [-name|-N name]\n");
+	fprintf(stderr, "Usage: nbd-client host port nbd_device [-block-size|-b block size] [-timeout|-t timeout] [-swap|-s] [-sdp|-S] [-persist|-p] [-nofork|-n]\n");
+	fprintf(stderr, "Or   : nbd-client -name|-N name host [port] nbd_device [-block-size|-b block size] [-timeout|-t timeout] [-swap|-s] [-sdp|-S] [-persist|-p] [-nofork|-n]\n");
 	fprintf(stderr, "Or   : nbd-client -d nbd_device\n");
 	fprintf(stderr, "Or   : nbd-client -c nbd_device\n");
 	fprintf(stderr, "Or   : nbd-client -h|--help\n");
@@ -283,6 +287,7 @@ void usage(char* errmsg, ...) {
 	fprintf(stderr, "Allowed values for blocksize are 512,1024,2048,4096\n"); /* will be checked in kernel :) */
 	fprintf(stderr, "Note, that kernel 2.4.2 and older ones do not work correctly with\n");
 	fprintf(stderr, "blocksizes other than 1024 without patches\n");
+	fprintf(stderr, "Default value for port with -N is 10809. Note that port must always be numeric\n");
 }
 
 void disconnect(char* device) {
@@ -317,7 +322,7 @@ int main(int argc, char *argv[]) {
 	int cont=0;
 	int timeout=0;
 	int sdp=0;
-	int nofork=0;
+	int G_GNUC_UNUSED nofork=0; // if -dNOFORK
 	u64 size64;
 	u32 flags;
 	int c;
@@ -371,10 +376,6 @@ int main(int argc, char *argv[]) {
 						nonspecial++;
 					} else {
 						port = optarg;
-						if(name) {
-							usage("port and name specified at the same time. This is not supported.");
-							exit(EXIT_FAILURE);
-						}
 					}
 					break;
 				case 2:
@@ -403,11 +404,9 @@ int main(int argc, char *argv[]) {
 			break;
 		case 'N':
 			name=optarg;
-			if(port) {
-				usage("port and name specified at the same time. This is not supported.");
-				exit(EXIT_FAILURE);
+			if(!port) {
+				port = NBD_DEFAULT_PORT;
 			}
-			port = NBD_DEFAULT_PORT;
 			break;
 		case 'p':
 			cont=1;