how to create a directory on the board?

[Altera_Forum]

Hi,  

 I have a stratix 1s10 with a uclinux. I'd like to create a directory (mkdir new_directory) but I don't have the permission. I think it's a question of right, but ... I don't want to create my directory in Nios IDE and download the romfs.bin ; I want to create it directly on the board. How can I do that in my board ?  Regards  John

[Altera_Forum]

Hi John, 

 The romfs is read-only ... you'll need to switch to a r/w file system to create directories, create/modify files, change attributes, etc. You might want to consider jffs2.  Regards, --Scott

[Altera_Forum]

Thanks a lot for your answer, 

 But the only file I can download is romfs.bin. When I build my file-system, I don't have jffs2. How can I create this file ?  Regards,   John

[Altera_Forum]

Hi John, 

 You'll need to enable jffs2 in the kernel configuration, then create your own jffs2 image using the mkfs.jffs2 utility. You can get the sources from:  http://www.psyent.com/download (http://www.psyent.com/download)  The sources at this site were ported for use under cygwin ... but you'd be doing yourself a favor (at least for the time being) to build the utility under linux -- as the cygwin version doesn't do a good job with some of the file attributes.  Regards, --Scott