Implement open device for Linux.

CMakeLists.txt

@@ -6,7 +6,7 @@ set(CMAKE_C_STANDARD 90)
 set(MAIN_SOURCES main.c list_devices.c device.c)
 
 if("${CMAKE_SYSTEM}" MATCHES "Linux")
-    set(PLATFORM_SOURCES linux/list_devices.c linux/linux.h)
+    set(PLATFORM_SOURCES linux/list_devices.c linux/linux.h linux/device.c)
 endif()
 
 add_executable(dicremote ${MAIN_SOURCES} ${PLATFORM_SOURCES})

device.c

@@ -15,4 +15,15 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-int DeviceOpen(const char* devicePath) { return -1; }
+#if defined(__linux__) && !defined(__ANDROID__)
+#include "linux/linux.h"
+#endif
+
+int DeviceOpen(const char* devicePath)
+{
+#if defined(__linux__) && !defined(__ANDROID__)
+    return linux_open_device(devicePath);
+#else
+    return -1;
+#endif
+}

linux/device.c

@@ -0,0 +1,32 @@
+/*
+ * This file is part of the DiscImageChef Remote Server.
+ * Copyright (c) 2019 Natalia Portillo.
+ *
+ * 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, version 3.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "linux.h"
+
+#include <errno.h>
+#include <fcntl.h>
+
+int linux_open_device(const char* device_path)
+{
+    int fd;
+
+    fd = open(device_path, O_RDWR | O_NONBLOCK | O_CREAT);
+
+    if((fd < 0) && (errno == EACCES || errno == EROFS)) { fd = open(device_path, O_RDONLY | O_NONBLOCK); }
+
+    return fd;
+}

linux/linux.h

@@ -22,5 +22,6 @@
 
 #define PATH_SYS_DEVBLOCK "/sys/block"
 DeviceInfoList* linux_list_devices();
+int             linux_open_device(const char* device_path);
 
 #endif // DICREMOTE_LINUX_H