android: Add system-emulator for wrapping daemon start

1 files changed, 123 insertions, 0 deletions

diff --git a/android/system-emulator.c b/android/system-emulator.c
new file mode 100644
index 000000000..3e44e74fa
--- /dev/null
+++ b/android/system-emulator.c
@@ -0,0 +1,123 @@
+/*
+ *
+ *  BlueZ - Bluetooth protocol stack for Linux
+ *
+ *  Copyright (C) 2013  Intel Corporation. All rights reserved.
+ *
+ *
+ *  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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <libgen.h>
+#include <sys/poll.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include "monitor/mainloop.h"
+
+static char exec_dir[PATH_MAX + 1];
+
+static pid_t daemon_pid = -1;
+
+static void ctl_start(void)
+{
+	char *prg_argv[1] = { NULL };
+	char prg_name[PATH_MAX + 1];
+	pid_t pid;
+
+	snprintf(prg_name, sizeof(prg_name), "%s/%s", exec_dir, "bluetoothd");
+
+	printf("Starting %s\n", prg_name);
+
+	pid = fork();
+	if (pid < 0) {
+		perror("Failed to fork new process");
+		return;
+	}
+
+	if (pid == 0) {
+		execv(prg_name, prg_argv);
+		exit(0);
+	}
+
+	daemon_pid = pid;
+}
+
+static void system_socket_callback(int fd, uint32_t events, void *user_data)
+{
+	char buf[4096];
+	ssize_t len;
+
+	if (events & (EPOLLERR | EPOLLHUP)) {
+		mainloop_remove_fd(fd);
+		return;
+	}
+
+	len = read(fd, buf, sizeof(buf));
+	if (len < 0)
+		return;
+
+	printf("Received %s\n", buf);
+
+	if (strcmp(buf, "ctl.start=bluetoothd"))
+		return;
+
+	ctl_start();
+}
+
+int main(int argc, char *argv[])
+{
+	static const char SYSTEM_SOCKET_PATH[] = "\0android_system";
+
+	struct sockaddr_un addr;
+	int fd;
+
+	mainloop_init();
+
+	printf("Android system emulator ver %s\n", VERSION);
+
+	snprintf(exec_dir, sizeof(exec_dir), "%s", dirname(argv[0]));
+
+	fd = socket(PF_LOCAL, SOCK_DGRAM | SOCK_CLOEXEC, 0);
+	if (fd < 0) {
+		perror("Failed to create system socket");
+		return EXIT_FAILURE;
+	}
+
+	memset(&addr, 0, sizeof(addr));
+	addr.sun_family = AF_UNIX;
+	memcpy(addr.sun_path, SYSTEM_SOCKET_PATH, sizeof(SYSTEM_SOCKET_PATH));
+
+	if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
+		perror("Failed to bind system socket");
+		close(fd);
+		return EXIT_FAILURE;
+	}
+
+	mainloop_add_fd(fd, EPOLLIN, system_socket_callback, NULL, NULL);
+
+	return mainloop_run();
+}