Invalid Cross-Device Link

[deon-gracias]

While trying to run a split on a pdf and writing it to the same area. I get this error of Invalid Cross-Device.

Going through the source code and messing I came to know it's cause of the os.Rename done in pkg/pdf/utils.go specifically in writePdf function on line 83.

The fix I found for it was just simply copying the file to the TEMP_DIR but then there's an issue that we cannot delete the file from TEMP_DIR when it is /tmp due to access rights I think.

[sampila]

Hi @deon-gracias do you modify the unipdf-cli code?

I tried but can't reproduce the issue.

alip@alips unipdf % go run main.go split ~/unipdf-security-report-3.pdf ~/unipdf-security-report-3.pdf 1
Successfully split file ~/unipdf-security-report-3.pdf
Output file saved to ~/unipdf-security-report-3.pdf
alip@alips unipdf % 

[deon-gracias]

No I haven't, but I still re-cloned the repository and tried again. This was the result.

I also checked if I have some other /tmp/unipdf_sample.pdf in my file doing a ls grep but nothing showed up

[sampila]

Could you share your pdf file?

Hard to debug if unable to reproduce the issue

[deon-gracias]

I'm sure its not the pdf that is the issue but here you go. I'll also look into some solutions, other than just copying the file to the /tmp dir

sample.pdf

[sampila]

I'm sure its not the pdf that is the issue but here you go. I'll also look into some solutions, other than just copying the file to the /tmp dir

sample.pdf

Yes, I am unable to reproduce it.

[deon-gracias]

I got it to work after changing the temp file location in the writePDF().

The issue is that by default on /tmp which is the problem. Creating a folder in the users /home/$USER dir works fine.

[sampila]

I got it to work after changing the temp file location in the writePDF().

The issue is that by default on /tmp which is the problem. Creating a folder in the users /home/$USER dir works fine.

Normally, it should call the temporary directory using os.TempDir() like here https://github.com/unidoc/unipdf-cli/blob/9dfe4f14cd22cc49c7a406356416128273803237/pkg/pdf/utils.go#L82

[deon-gracias]

Yes and the os.TempDir() for me returns /tmp path

[sampila]

Pretty strange, can try with other pdf? seems file permission issue to me, as I can't reproduce the issue also here.

[deon-gracias]

Yea the only thing I can think about is / is in root so its not allowing it to rename the file created in /tmp.

[sampila]

So, I am closing this issue for now, as I can't reproduce it on my end.

Feel free to re-open the issue if there's a way to reproduce the issue and we will re-open this also if we found way to reproduce and confirm this issue.