https://github.com/carbonin/iso-edit

https://github.com/carbonin/iso-edit

Last synced: 9 days ago
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• Host: GitHub
• URL: https://github.com/carbonin/iso-edit
• Owner: carbonin
• License: apache-2.0
• Created: 2020-12-09T18:45:37.000Z (almost 4 years ago)
• Default Branch: master
• Last Pushed: 2021-02-01T13:57:23.000Z (almost 4 years ago)
• Last Synced: 2024-10-25T00:47:32.032Z (22 days ago)
• Language: Go
• Size: 20.5 KB
• Stars: 0
• Watchers: 1
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# iso-edit

The goal of this test program is to unpack a base iso and inject an additional cpio archive such that arbitrary files can be added to the initrd.

The repackaging step should, ideally do the same thing as:

```bash

genisoimage \

   -V rhcos-46.82.202010091720-0 \

   -c isolinux/boot.cat \

   -b isolinux/isolinux.bin \

   -no-emul-boot \

   -boot-load-size 4 \

   -boot-info-table \

   -eltorito-alt-boot \

   -e images/efiboot.img \

   -no-emul-boot \

   -o isos/test-iso.iso \

   /tmp/iso-test/

Probably more like this:

From https://github.com/coreos/coreos-assembler

genisoimage \

   -verbose \

   -V rhcos-46.82.202010091720-0 -volset rhcos-46.82.202010091720-0 \

   -rational-rock -J -joliet-long \

   -eltorito-boot isolinux/isolinux.bin \

   -eltorito-catalog isolinux/isolinux.cat \

   -no-emul-boot -boot-load-size 4 -boot-info-table \

   -eltorito-alt-boot \

   -efi-boot images/efiboot.img \

   -no-emul-boot \

   -o isos/test-iso.iso \

   /tmp/iso-test/

isohybrid isos/test-iso.iso

```

Also this?

https://github.com/coreos/coreos-assembler/blob/510dbec7b84aa45a646079fe3341e2b5925c0774/src/cmd-buildextend-live#L481-L511

## How to use

1. Download the base ISO from https://mirror.openshift.com/pub/openshift-v4/dependencies/rhcos/4.6/4.6.1/rhcos-4.6.1-x86_64-live.x86_64.iso to the `isos` directory

2. Build `make build`

3. Run `./build/iso-edit`

## Notes

1. Running currently leaves the unpacked iso at `/tmp/iso-test`

2. The default location for the iso is `isos/my-rhcos.iso`

3. The input iso, output path, and files to add are all configurable with flags

4. `make run` is a convienience which will remove the temp dir and the default output iso, rebuild, and run with the defaults.