Added SystemInfo and FileSystems to query system and file system information, respectively.

src/main/java/net/rubygrapefruit/platform/internal/DefaultFileSystem.java

@@ -0,0 +1,39 @@
+package net.rubygrapefruit.platform.internal;
+
+import net.rubygrapefruit.platform.FileSystem;
+
+import java.io.File;
+
+public class DefaultFileSystem implements FileSystem {
+    private final File mountPoint;
+    private final String fileSystemType;
+    private final String deviceName;
+    private final boolean remote;
+
+    public DefaultFileSystem(File mountPoint, String fileSystemType, String deviceName, boolean remote) {
+        this.mountPoint = mountPoint;
+        this.fileSystemType = fileSystemType;
+        this.deviceName = deviceName;
+        this.remote = remote;
+    }
+
+    @Override
+    public String getDeviceName() {
+        return deviceName;
+    }
+
+    @Override
+    public File getMountPoint() {
+        return mountPoint;
+    }
+
+    @Override
+    public String getFileSystemType() {
+        return fileSystemType;
+    }
+
+    @Override
+    public boolean isRemote() {
+        return remote;
+    }
+}

src/main/java/net/rubygrapefruit/platform/internal/FileSystemList.java

@@ -0,0 +1,15 @@
+package net.rubygrapefruit.platform.internal;
+
+import net.rubygrapefruit.platform.FileSystem;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
+public class FileSystemList {
+    public final List<FileSystem> fileSystems = new ArrayList<FileSystem>();
+
+    public void add(String mountPoint, String fileSystemName, String deviceName, boolean remote) {
+        fileSystems.add(new DefaultFileSystem(new File(mountPoint), fileSystemName, deviceName, remote));
+    }
+}

src/main/java/net/rubygrapefruit/platform/internal/MutableSystemInfo.java

@@ -0,0 +1,25 @@
+package net.rubygrapefruit.platform.internal;
+
+import net.rubygrapefruit.platform.SystemInfo;
+
+public class MutableSystemInfo implements SystemInfo {
+    public String osName;
+    public String osVersion;
+    public String characterEncoding;
+    public String machineArchitecture;
+
+    @Override
+    public String getKernelName() {
+        return osName;
+    }
+
+    @Override
+    public String getKernelVersion() {
+        return osVersion;
+    }
+
+    @Override
+    public String getMachineArchitecture() {
+        return machineArchitecture;
+    }
+}

src/main/java/net/rubygrapefruit/platform/internal/Platform.java

@@ -1,89 +1,98 @@
-package net.rubygrapefruit.platform.internal;
-
-public abstract class Platform {
-    private static Platform platform;
-
-    public static Platform current() {
-        synchronized (Platform.class) {
-            if (platform == null) {
-                String osName = System.getProperty("os.name").toLowerCase();
-                if (osName.contains("windows")) {
-                    platform = new Windows();
-                } else if (osName.contains("linux")) {
-                    platform = new Linux();
-                } else if (osName.contains("os x")) {
-                    platform = new OsX();
-                } else if (osName.contains("sunos")) {
-                    platform = new Solaris();
-                } else {
-                    platform = new Unsupported();
-                }
-            }
-            return platform;
-        }
-    }
-
-    public boolean isSupported() {
-        return true;
-    }
-
-    public boolean isPosix() {
-        return false;
-    }
-
-    public boolean isWindows() {
-        return false;
-    }
-
-    public abstract String getLibraryName();
-
-    private static class Windows extends Platform {
-        @Override
-        public boolean isWindows() {
-            return true;
-        }
-
-        @Override
-        public String getLibraryName() {
-            return "native-platform.dll";
-        }
-    }
-
-    private static abstract class Posix extends Platform {
-        @Override
-        public boolean isPosix() {
-            return true;
-        }
-    }
-
-    private static class Unix extends Posix {
-        @Override
-        public String getLibraryName() {
-            return "libnative-platform.so";
-        }
-    }
+package net.rubygrapefruit.platform.internal;
 
-    private static class Linux extends Unix {
-    }
-
-    private static class Solaris extends Unix {
-    }
-
-    private static class OsX extends Posix {
-        @Override
-        public String getLibraryName() {
-            return "libnative-platform.dylib";
-        }
-    }
-
-    private static class Unsupported extends Platform {
-        @Override
-        public boolean isSupported() {
-            return false;
-        }
-
-        public String getLibraryName() {
-            throw new UnsupportedOperationException();
-        }
-    }
-}
+public abstract class Platform {
+    private static Platform platform;
+
+    public static Platform current() {
+        synchronized (Platform.class) {
+            if (platform == null) {
+                String osName = System.getProperty("os.name").toLowerCase();
+                if (osName.contains("windows")) {
+                    platform = new Windows();
+                } else if (osName.contains("linux")) {
+                    platform = new Linux();
+                } else if (osName.contains("os x")) {
+                    platform = new OsX();
+                } else if (osName.contains("sunos")) {
+                    platform = new Solaris();
+                } else {
+                    platform = new Unsupported();
+                }
+            }
+            return platform;
+        }
+    }
+
+    public boolean isSupported() {
+        return true;
+    }
+
+    public boolean isPosix() {
+        return false;
+    }
+
+    public boolean isWindows() {
+        return false;
+    }
+
+    public boolean isOsX() {
+        return false;
+    }
+
+    public abstract String getLibraryName();
+
+    private static class Windows extends Platform {
+        @Override
+        public boolean isWindows() {
+            return true;
+        }
+
+        @Override
+        public String getLibraryName() {
+            return "native-platform.dll";
+        }
+    }
+
+    private static abstract class Posix extends Platform {
+        @Override
+        public boolean isPosix() {
+            return true;
+        }
+    }
+
+    private static class Unix extends Posix {
+        @Override
+        public String getLibraryName() {
+            return "libnative-platform.so";
+        }
+    }
+
+    private static class Linux extends Unix {
+    }
+
+    private static class Solaris extends Unix {
+    }
+
+    private static class OsX extends Posix {
+        @Override
+        public boolean isOsX() {
+            return true;
+        }
+
+        @Override
+        public String getLibraryName() {
+            return "libnative-platform.dylib";
+        }
+    }
+
+    private static class Unsupported extends Platform {
+        @Override
+        public boolean isSupported() {
+            return false;
+        }
+
+        public String getLibraryName() {
+            throw new UnsupportedOperationException();
+        }
+    }
+}

src/main/java/net/rubygrapefruit/platform/internal/PosixFileSystems.java

@@ -0,0 +1,21 @@
+package net.rubygrapefruit.platform.internal;
+
+import net.rubygrapefruit.platform.FileSystem;
+import net.rubygrapefruit.platform.FileSystems;
+import net.rubygrapefruit.platform.NativeException;
+import net.rubygrapefruit.platform.internal.jni.PosixFileSystemFunctions;
+
+import java.util.List;
+
+public class PosixFileSystems implements FileSystems {
+    @Override
+    public List<FileSystem> getFileSystems() {
+        FunctionResult result = new FunctionResult();
+        FileSystemList fileSystems = new FileSystemList();
+        PosixFileSystemFunctions.listFileSystems(fileSystems, result);
+        if (result.isFailed()) {
+            throw new NativeException(String.format("Could not query file systems: %s", result.getMessage()));
+        }
+        return fileSystems.fileSystems;
+    }
+}

src/main/java/net/rubygrapefruit/platform/internal/jni/NativeLibraryFunctions.java

@@ -1,7 +1,12 @@
 package net.rubygrapefruit.platform.internal.jni;
 
+import net.rubygrapefruit.platform.internal.FunctionResult;
+import net.rubygrapefruit.platform.internal.MutableSystemInfo;
+
 public class NativeLibraryFunctions {
-    public static final int VERSION = 4;
+    public static final int VERSION = 5;
 
     public static native int getVersion();
+
+    public static native void getSystemInfo(MutableSystemInfo systemInfo, FunctionResult result);
 }

src/main/java/net/rubygrapefruit/platform/internal/jni/PosixFileSystemFunctions.java

@@ -0,0 +1,8 @@
+package net.rubygrapefruit.platform.internal.jni;
+
+import net.rubygrapefruit.platform.internal.FileSystemList;
+import net.rubygrapefruit.platform.internal.FunctionResult;
+
+public class PosixFileSystemFunctions {
+    public static native void listFileSystems(FileSystemList fileSystems, FunctionResult result);
+}