[selphy] Make sure we're using blocking I/O, and fix warnings.

selphy_print.c

@@ -307,8 +307,8 @@ static int find_and_enumerate(struct libusb_context *ctx,
 			libusb_get_string_descriptor_ascii(dev, desc.iSerialNumber, serial, STR_LEN_MAX);
 		}
 
-		if (!strlen(serial))
-			strcpy(serial, "NONE");
+		if (!strlen((char*)serial))
+		  strcpy((char*)serial, "NONE");
 
 		DEBUG("%s%sPID: %04X Product: '%s' Serial: '%s'\n",
 		      (!valid) ? "UNRECOGNIZED: " : "",
@@ -405,6 +405,19 @@ int main (int argc, char **argv)
 			}
 		}
 
+		/* Ensure we're using BLOCKING I/O */
+		i = fcntl(data_fd, F_GETFL, 0);
+		if (i < 0) {
+			perror("ERROR:Can't open input");
+			exit(1);
+		}
+		i &= ~O_NONBLOCK;
+		i = fcntl(data_fd, F_SETFL, 0);
+		if (i < 0) {
+			perror("ERROR:Can't open input");
+			exit(1);
+		}
+
 		/* Start parsing URI 'selphy://PID/SERIAL' */
 		if (strncmp(URI_PREFIX, uri, strlen(URI_PREFIX))) {
 			ERROR("Invalid URI prefix (%s)\n", uri);

selphy_print_common.h

@@ -25,7 +25,7 @@
  *
  */
 
-#define VERSION "0.43"
+#define VERSION "0.44"
 
 #define DEBUG( ... ) fprintf(stderr, "DEBUG: " __VA_ARGS__ )
 #define ERROR( ... ) fprintf(stderr, "ERROR: " __VA_ARGS__ )