[Feature request] dwarfs support.

[Samueru-sama]

Hi, I've recently been experimenting with the appimage runtime that supports dwarfs.

The big oopsie I ran into is that of course aisap doesn't work with it since it expects squashfs only.

However it is worth noting that it is possible to make aisap in its current state work with dwarfs, the problem is that it takes a horrible hack that uses two wrapper scripts.

So in theory all that would need to be done is check if the target appimage is dwarfs, after that the dwarfs binary can handle the rest and even find the offset on its own.

[mgord9518]

Haha the overlap in our projects is crazy, I was actually playing around with DwarFS app bundles a year or so ago. I should be able to add it fairly easily, all I need is a way to check. This will come with the assumption that the target machine has DwarFS installed though because it's pretty massive and I don't want to make aisap 5x as big for a niche use

With your format, is there a special header or does it require checking the image offset to see if it has a SquashFS or DwarFS image?

[Samueru-sama]

With your format, is there a special header or does it require checking the image offset to see if it has a SquashFS or DwarFS image?

Not sure what's the best way to determine if it is dwarfs, on the hacky script screenshot I just grep the string DWARFS do determine it.

The dwarfs binary itself can determine the offset, so all that has to be done is pass dwarfs -o offset=auto appimage mountpoint

[mgord9518]

@Samueru-sama The offset isn't an issue as that's something aisap finds already (as long as it's just an ELF executable that isn't compressed with UPX or something)

I was just wondering if you had added something into the main header of the file that would hint at it being different (eg changing the AppImage header). If not it shouldn't be hard to find

[Samueru-sama]

The offset isn't an issue as that's something aisap finds already (as long as it's just an ELF executable that isn't compressed with UPX or something)

I was just wondering if you had added something into the main header of the file that would hint at it being different (eg changing the AppImage header). If not it shouldn't be hard to find

I'm not sure, the runtime is fully compatible with the regular type2 appimage runtime, so to other tools like appimageupdatetool the appimage is the same.

[mgord9518]

It should only be a couple line change then, I'll try to get it implemented soonish

[Samueru-sama]

Hi @mgord9518 are there plans for this to be added?

We recently started making squashfs releases of the Steam AppImage in part due to this issue.

[mgord9518]

@Samueru-sama I do want it as a feature, but it's been difficult for me to find the motivation currently. If you make a PR I'll merge it but otherwise I can't make any promises on time

[Samueru-sama]

@Samueru-sama I do want it as a feature, but it's been difficult for me to find the motivation currently. If you make a PR I'll merge it but otherwise I can't make any promises on time

Understood, will see if I can study Go a bit and make something.

Hope you are alright.

[mgord9518]

@Samueru-sama Yeah! I'm doing well, I just jump between projects. Aisap will probably become my favorite again eventually, I'm just a bit burned-out with AppImage stuff.