When no device is given, find ourselves which removable device (if any) can

be considered the default one.
When several are, the command failed after listing them.
This should avoid to always fallback to floppy as
the default removable device.
Closes #7247.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40601 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/bin/eject.cpp

@@ -1,25 +1,62 @@
-// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
-//
-//  Copyright (c) 2003, OpenBeOS
-//
-//  This software is part of the OpenBeOS distribution and is covered
-//  by the OpenBeOS license.
-//
-//
-//  File:        eject.c
-//  Author:      François Revol ([email protected])
-//  Description: ejects physical media from a drive.
-//               This version also loads a media and can query for the status.
-//
-// ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
+/*
+ * Copyright (c) 2003-2011, Haiku Inc.
+ * Distributed under the terms of the MIT license.
+ *
+ * Authors:
+ *		François Revol <[email protected]>
+ *		Philippe Houdoin
+ *
+ * Description: ejects physical media from a drive.
+ *              This version also loads a media and can query for the status.
+ */
 
-#include <stdio.h>
 #include <fcntl.h>
+#include <stdio.h>
 #include <string.h>
 #include <unistd.h>
-#include <Drivers.h>
+
 #include <device/scsi.h>
+#include <DiskDevice.h>
+#include <DiskDeviceRoster.h>
+#include <DiskDeviceVisitor.h>
+#include <Drivers.h>
 #include <fs_info.h>
+#include <ObjectList.h>
+#include <Path.h>
+#include <String.h>
+
+
+class RemovableDevice {
+public:
+	RemovableDevice(BDiskDevice* device) {
+		fName = device->Name();
+		device->GetPath(&fPath);
+	};
+
+	inline const char* Name() 	{ return fName.String(); }
+	inline const char* Path()	{ return fPath.Path(); }
+
+private:
+	BString	fName;
+	BPath 	fPath;
+};
+
+
+class RemovableDeviceVisitor : public BDiskDeviceVisitor {
+public:
+	virtual bool Visit(BDiskDevice* device)	{
+		if (device->IsRemovableMedia())
+			fRemovableDevices.AddItem(new RemovableDevice(device));
+		return false; // Don't stop yet!
+	}
+
+	virtual bool Visit(BPartition* partition, int32 level) { return false; }
+
+	inline BObjectList<RemovableDevice>&	RemovableDevices() { return fRemovableDevices; }
+
+private:
+	BObjectList<RemovableDevice>	fRemovableDevices;
+};
 
 
 static int usage(char *prog)
@@ -46,7 +83,7 @@ int main(int argc, char **argv)
 	char operation = 'e';
 	int i;
 	int ret;
-	
+
 	for (i = 1; i < argc; i++) {
 		if (strncmp(argv[i], "--h", 3) == 0) {
 			return usage("eject");
@@ -64,8 +101,31 @@ int main(int argc, char **argv)
 				return ret;
 		}
 	}
-	if (device == NULL)
-		return do_eject(operation, "/dev/disk/floppy/raw");
+	if (device == NULL) {
+		BDiskDeviceRoster diskDeviceRoster;
+		RemovableDeviceVisitor visitor;
+		diskDeviceRoster.VisitEachDevice(&visitor);
+
+		int32 count = visitor.RemovableDevices().CountItems();
+		if (count < 1) {
+			printf("No removable device found!\n");
+			return 1;
+		}
+
+		if (count > 1) {
+			printf("Multiple removable devices available:\n");
+			for (i = 0; i < count; i++) {
+				RemovableDevice* item = visitor.RemovableDevices().ItemAt(i);
+				printf("  %s\t\"%s\"\n", item->Path(), item->Name());
+			}
+			return 1;
+		}
+
+		// Default to single removable device found
+		device = (char*)visitor.RemovableDevices().FirstItem()->Path();
+		return do_eject(operation, device);
+	}
+
 	return 0;
 }
 
@@ -77,7 +137,7 @@ static int do_eject(char operation, char *device)
 	status_t devstatus;
 	fs_info info;
 
-	// if the path is not on devfs, it's probably on 
+	// if the path is not on devfs, it's probably on
 	// the mountpoint of the device we want to act on.
 	// (should rather stat() for blk(char) device though).
 	if (fs_stat_dev(dev_for_path(device), &info) >= B_OK) {