Cannot open a program on the DR800 emulator

CoolDragon · 03-11-2010, 04:54 PM

I copied the ".desktop" and related files to the virtual SD card on the emulator using scp, inside a newly created folder "Program". With the folder hack, I can go into the "Program" folder and click the shortcut, but then it shows:

The 'Install Chinese Display support' application cannot be opened.
Possibly the application is already open. Close it first and try again.

What does this mean?

CoolDragon · 03-11-2010, 05:03 PM

OK, I figured it out. I have to ssh into the emulator and change the permission of the script file to be executable. Hopefully this is not needed for the real device.

Shaggy · 03-11-2010, 05:11 PM

On the real device you'd just need to make sure it's executable on the SD card, right?

CoolDragon · 03-11-2010, 05:19 PM

Quote:

Originally Posted by Shaggy

On the real device you'd just need to make sure it's executable on the SD card, right?

I assume the umask setting when the real device is connected to a host (Windows/Linux/Mac) will by default make the file executable? Or does it keep the original file's mode? Then it's the app creator's job to set the correct mode for each file. I don't know.

Shaggy · 03-11-2010, 05:20 PM

Quote:

Originally Posted by CoolDragon

I assume the umask setting when the real device is connected to a host (Windows/Linux/Mac) will by default make the file executable? Or does it keep the original file's mode? Then it's the app creator's job to set the correct mode for each file. I don't know.

I don't know, but should be easy to test.

Mr. X · 03-11-2010, 05:46 PM

On the real device the SD card is fat32 formatted, which doesn't have users or permissions at all, so linux treats every file as executable the way it is mounted... On the emulator /media/mmcblk0p1 is just a directory of the root ext2 filesystem so permissions matter.

03-11-2010, 04:54 PM	#1
CoolDragon Addict Posts: 244 Karma: 124 Join Date: Feb 2010 Device: none	Cannot open a program on the DR800 emulator I copied the ".desktop" and related files to the virtual SD card on the emulator using scp, inside a newly created folder "Program". With the folder hack, I can go into the "Program" folder and click the shortcut, but then it shows: The 'Install Chinese Display support' application cannot be opened. Possibly the application is already open. Close it first and try again. What does this mean?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
DR800 ANN: DR800+. Port of some DR1000 features to the DR800	Iñigo	iRex	274	04-05-2013 02:24 PM
DR800 rxvt (terminal emulator) for DR800	GregorRichards	iRex	13	01-04-2011 06:56 AM
DR800 gnuplot (2D/3D plotting program) for DR800	GregorRichards	iRex	3	04-28-2010 01:32 AM
DR800 Emulator	Jumpn Jack Flash	iRex	4	02-20-2010 04:19 AM

03-11-2010, 05:03 PM	#2
CoolDragon Addict Posts: 244 Karma: 124 Join Date: Feb 2010 Device: none	OK, I figured it out. I have to ssh into the emulator and change the permission of the script file to be executable. Hopefully this is not needed for the real device.

03-11-2010, 05:11 PM	#3
Shaggy Wizard Posts: 4,293 Karma: 529619 Join Date: May 2007 Device: iRex iLiad, DR800SG	On the real device you'd just need to make sure it's executable on the SD card, right?

03-11-2010, 05:46 PM	#6
Mr. X Connoisseur Posts: 68 Karma: 64 Join Date: Mar 2010 Location: Philadelphia Device: iRex DR800SG	On the real device the SD card is fat32 formatted, which doesn't have users or permissions at all, so linux treats every file as executable the way it is mounted... On the emulator /media/mmcblk0p1 is just a directory of the root ext2 filesystem so permissions matter.