adb --one-device feature.

Added support for a new server option, --one-device.

When a server is started with that option, it will only communicate with
the USB device serial number or device address specified.

This allows multiple adb servers to run in parallel on a single host,
each communicating only with a single USB device.

example usage:
$ adb --one-device usb:2-4 -P 1138 start-server
$ adb --one-device usb:2-6 -P 1139 start-server
$ adb -P 1138 devices -l
List of devices attached
97221FFBA00016         device usb:2-4 transport_id:1
$ adb -P 1139 devices -l
List of devices attached
13031FDEE0000C         device usb:2-6 transport_id:1

Test: Manually tested as shown above with & without libusb, Linux & macOS.
Change-Id: Ibc4e3df7ecdefce737291185fa6a84071bff5340

1 files changed, 3 insertions, 2 deletions

diff --git a/adb.h b/adb.h
index 801da1d6..9dfaf3ed 100644
--- a/adb.h
+++ b/adb.h
@@ -135,8 +135,9 @@ void print_packet(const char* label, apacket* p);
 
 void handle_packet(apacket* p, atransport* t);
 
-int launch_server(const std::string& socket_spec);
-int adb_server_main(int is_daemon, const std::string& socket_spec, int ack_reply_fd);
+int launch_server(const std::string& socket_spec, const char* one_device);
+int adb_server_main(int is_daemon, const std::string& socket_spec, const char* one_device,
+                    int ack_reply_fd);
 
 /* initialize a transport object's func pointers and state */
 int init_socket_transport(atransport* t, unique_fd s, int port, int local);