volicon not working?

[jtolio]

hello,

i'm providing the fuse option "volicon=/path/to/icons.icns" but fuse is failing to mount with the error:

fuse: unknown option `modules=volicon'

it looks like somehow my dmg didn't provide the volicon module? what happened?

[bfleischer]

Could you post all options you are using? Does /path/to/icons.icns contain spaces or other special characters?

[jtolio]

I was worried about that, so I tried to make sure.

I'm generating a c-string of options and passing it to fuse like so:

struct fuse_args args = FUSE_ARGS_INIT(0, NULL);
fuse_opt_add_arg(&args, argv[0]);
fuse_opt_add_arg(&args, mystring);

where mystring = "-oallow_root,max_read=131072,max_write=131072,fsname=MyFS,subtype=fs,nolocalcaches,volname=MyFS,volicon=/Applications/Chess.app/Contents/Resources/chess.icns"

And that's when I get "fuse: unknown option `modules=volicon'"

What should I check next?

[jtolio]

any other ideas?

[bfleischer]

Are you using the lowlevel FUSE interface as in calling fuse_lowlevel_new(...) instead of fuse_new(...) or fuse_main(...)?

The lowlevel interface does not allow loading FUSE modules. Since the volicon option tries to load the volicon module it won't work on the lowlevel interface. You have basically three options:

• Use the higher level FUSE interface
• Use the lowlevel FUSE interface without a volume icon (drop volicon=/Applications/Chess.app/Contents/Resources/chess.icns from mystring and you should be fine)
• Use the the lowlevel interface and handle the volume icon yourself. You just need to place the icon file in the root of the FUSE volume and name it .VolumeIcon.icns. Finder will pick it up automatically.

[jtolio]

nice, so I made a .VolumeIcon.icns but it's not getting picked up. are there any special attributes or stat fields the volicon module is setting?

[bfleischer]

Please take a look at volicon.c in lib/modules of the fuse repository: https://github.com/osxfuse/fuse/blob/fuse-2.7/lib/modules/volicon.c#L411. You need to tweak your volume's xattrs.

[jtolio]

doh, i'm using auto_xattr. do you think providing my own ._.VolumeIcons.icns file would be easy?

[bfleischer]

I don't know. I've never tried to fake AppleDouble files.

Since the original issue has been resolved I'm going to close this ticket.