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Subscription Policy change
by Christian Helmuth 09 Sep '26

09 Sep '26

Hello Genodians, in consequence of recent junk-mail actions on the list I changed the Subscription Policy into moderation mode. Let's cross fingers that this eliminates the noise. Best regards -- Christian Helmuth Genode Labs https://www.genode-labs.com/ · https://genode.org/ https://floss.social/@genode · https://genodians.org/ https://de.linkedin.com/company/genodelabs Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

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Announcement: Genode OS Framework version 26.08 released
by Norman Feske 25 Aug '26

25 Aug '26

Hello everyone, today, we just have released version 26.08 of the Genode OS Framework: https://genode.org/news/genode-os-framework-release-26.08 The topics range from x86 kernel optimizations, deeply technical infrastructure work regarding timing and virtual file systems, over VirtualBox 7, up to the new ability of running a Goa-based Genode SDK directly on Sculpt OS without virtualization crutches. Moving towards desktop-oriented features envisioned on our road map, the new version takes Genode's dynamic configuration concept right to the VFS level. Thereby the virtual file system environment of an application can be reshaped at runtime without disrupting the application. As a major feature for users of Sculpt OS, VirtualBox 7 has become available, superseding the aging version 6, enabling a wider selection of recent guest OSes, and noticeably improving SMP performance. Driver-wise, we are happy to announce that all drivers ported from Linux consistently use kernel version 6.18.19 now. The drivers for ARM SoCs have now stepped into line. Further driver improvements concern human interface devices, like enhanced touchpad support for palm detection and virtual mouse buttons. At the kernel-level, our custom base-hw microkernel received numerous PC performance optimizations that are highly anticipated when using the kernel as the basis for Sculpt OS. on the latter account, power monitoring and steering has been added to the kernel as well. Summary of changes: - New port of VirtualBox 7 - New ports of OpenSSL-3.5.7, curl-8.21, and OpenSSH 10.3 - Seoul VMM - Device drivers - Linux 6.18.19 device-driver environment for 64-bit ARM - Improved touchpad support - Wifi support for MediaTek MT7922 - Dynamically reconfigurable virtual file system - Improved timing and timeout handling - PC performance control and optimizations for our custom kernel - Networking for Sculpt OS on Linux - Initial version of a Goa-based SDK running on Sculpt OS For the complete picture, let me refer you to the full release documentation: https://genode.org/documentation/release-notes/26.08 Have fun with exploring the new version! Norman -- Dr.-Ing. Norman Feske Genode Labs https://www.genode-labs.com · https://genode.org Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

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Security check required
by Security check 17 Aug '26

17 Aug '26

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Secure Boot status for Sculpt OS July 2026 update?
by larryflynt＠tutamail.com 17 Jul '26

17 Jul '26

Hi all, I've been following Genode/Sculpt OS and the recent discussions around Secure Boot. I saw Johannes Lötzsch's post on the 2026 roadmap thread back in January where he described his partial setup (TrustedGRUB/Lanzaboote for the kernel, but the Sculpt image and GENODE* configs unsigned), and Norman's reply that the topic "screams to be addressed in 2026." Now that we're halfway through 2026 and Sculpt 26.04 has shipped, I wanted to ask: Is there any progress on a full verified boot chain? Even a rough plan or list of blockers would be interesting to hear. Johannes mentioned using Lanzaboote with custom keys — is that still the best community approach today, or has anyone managed to go further (signed system image, measured GENODE* partition, TPM integration)? For someone who wants to contribute here — what's the smallest useful piece that could move this forward? Is it documentation of the existing hack, build-system work, a design discussion on how to handle the dynamic depot model, something else? I think Sculpt's runtime security architecture is genuinely unmatched, but telling users to disable Secure Boot to run it is a hard sell. I'd love to see this gap closed. Thanks Alex

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How to Explicitly Sync When Appending to a File
by Rumen Mitov 24 Jun '26

24 Jun '26

Hello, I would like to sync the file-system after every invocation to `Genode::Append_file::append()`. However, the `_sync()` interface is private as are the Genode::Append_file's `_io` and `_handle`. What is the recommended way to sync? I tried using handles as well: ```cpp Vfs::File_system &fs{root_dir.root_dir()}; Vfs::Vfs_handle *handle {}; fs.open("foo", Vfs::Directory_service::Open_mode::OPEN_MODE_RDWR | Vfs::Directory_service::Open_mode::OPEN_MODE_CREATE, &handle, heap); // file opens properly for (long long unsigned i = 0; i < 10; i++) { auto _str = Genode::String<512>(Genode::Hex(i), "\n"); Genode::Const_byte_range_ptr const bufrange { _str.string(), _str.length() }; Genode::size_t out = 0; auto res = fs.write(handle, bufrange, out); handle->advance_seek(out); Genode::warning("WROTE: ", out, "B, RES: ", (Genode::uint32_t)res); } fs.close(handle); ``` However, before I could add syncing to the above example, I noticed that `fs.write()` returns WRITE_ERR_INVALID. I am stuck on what could be wrong, as I based this example off of the internal implementation of `Genode::Writeable_file`. As always, any help is greatly appreciated :) Best, Rumen P.S. This was tested on rump-ext2fs.

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13 Jun '26

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Re: AI-generated code
by Ryan Davidovics 09 Jun '26

09 Jun '26

Norman, Understood. Thank you for your reply. I will take care to avoid pasting any AI generated content in the future. If I understand your answer correctly, then using AI to research and investigate is acceptable, but any proposed changes, bug reports, or fixes should solely consist of code and content I create, and which I assume all responsibility for? Thanks, Ryan Davidovics -------- Original Message -------- On Monday, 06/08/26 at 05:01 users-request(a)lists.genode.org wrote: Send users mailing list submissions to users(a)lists.genode.org To subscribe or unsubscribe via email, send a message with subject or body 'help' to users-request(a)lists.genode.org You can reach the person managing the list at users-owner(a)lists.genode.org When replying, please edit your Subject line so it is more specific than "Re: Contents of users digest..." Today's Topics: 1. MSM8226 Port part_block GPT Partition Parsing Error (Ryan Davidovics) 2. AI-generated code (was Re: MSM8226 Port part_block GPT Partition Parsing Error) (Norman Feske) ---------------------------------------------------------------------- Message: 1 Date: Mon, 08 Jun 2026 01:47:42 +0000 From: Ryan Davidovics <davidovicsryanp(a)protonmail.com> Subject: MSM8226 Port part_block GPT Partition Parsing Error To: "users(a)lists.genode.org" <users(a)lists.genode.org> Message-ID: <In2Lv_iy0CX68v2IED625TkHDmkg4Y9wg3LDs9Uxd-e9jdHz83zmO_EQx 1WzCLmUOALjtEA0CrQvwLfewHJrrcLbQ_bghhvAN7EsmLMB5-c=(a)protonmail.com> Content-Type: multipart/alternative; boundary="b1=_PHFoLFLjnJOmFBdCeBKKc0YQJv7ZBM03H1EDpxyU" Hello, My sincerest apologies if this question is malformed, misplaced, or mistaken in some way. I am inexperienced with Genode, but have been exploring it for a number of personal projects. The one I am currently working on is creating a minimal sculpt-like OS to replace the default Android 4.2 operating system on a rugged 4G Sonim XP5700 phone to serve as a platform for further Genode exploration and IoT projects. To test the viability of this, I have been using Claude Opus 4.7/4.8 to accelerate working through creating a port for the msm8226/msm8926 SoC and phone platform. It has been largely successful so far, but hit a snag when implementing the file system service. This was its report: ``` part_block has a real bug for this device's GPT: the parse loop (gpt.h:373) runs to a hardcoded MAX_PARTITIONS=128, but this Qualcomm GPT declares fewer entry slots, so the entry-array buffer (sized to the header's actual entries(), gpt.h:363) overruns once i passes the real count. (_calculate_used at gpt.h:342 already correctly bounds by entries() — only the parse loop doesn't.) The one-line fix is to bound the parse loop by min(entries(), MAX_PARTITIONS). ``` And its recommended fix, which successfully resolved the issue: ``` diff --git a/repos/os/src/server/part_block/gpt.h b/repos/os/src/server/part_block/gpt.h index dbe9128e01..3539024cfb 100644 --- a/repos/os/src/server/part_block/gpt.h +++ b/repos/os/src/server/part_block/gpt.h @@ -370,7 +370,17 @@ class Block::Gpt : public Block::Partition_table _gpt_total = (gpt.part_lba_end() - gpt.part_lba_start()) + 1; _gpt_used = _calculate_used(gpt, entries, gpt.entries()); - for (int i = 0; i < MAX_PARTITIONS; i++) { + /* + * Iterate only over the entries the header actually declares -- + * a GPT may advertise fewer slots than MAX_PARTITIONS (e.g. the + * Qualcomm MSM8226 eMMC declares < 128), and the entry-array + * buffer above is sized to gpt.entries(); walking to MAX_PARTITIONS + * unconditionally overruns it (Mmio Range_violation). This matches + * the bound already used by _calculate_used(). + */ + unsigned const num_entries = min(gpt.entries(), + (uint32_t)MAX_PARTITIONS); + for (unsigned i = 0; i < num_entries; i++) { Gpt_entry e(entries.range_at(i * gpt.entry_size())); ``` I am not sure of what the stance is on AI generated code or how well-documented pull requests need to be before creation, and I do not yet have the ability to test this change in a comprehensive way. I would love to contribute in any way I can, but am not yet certain of whether I have the tools or knowledge to do so correctly yet. I would greatly appreciate any feedback or advice, and thank you for your time and consideration regardless. This has been a remarkable project to learn about so far. Thanks, Ryan Davidovics

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MSM8226 Port part_block GPT Partition Parsing Error
by Ryan Davidovics 08 Jun '26

08 Jun '26

Hello, My sincerest apologies if this question is malformed, misplaced, or mistaken in some way. I am inexperienced with Genode, but have been exploring it for a number of personal projects. The one I am currently working on is creating a minimal sculpt-like OS to replace the default Android 4.2 operating system on a rugged 4G Sonim XP5700 phone to serve as a platform for further Genode exploration and IoT projects. To test the viability of this, I have been using Claude Opus 4.7/4.8 to accelerate working through creating a port for the msm8226/msm8926 SoC and phone platform. It has been largely successful so far, but hit a snag when implementing the file system service. This was its report: ``` part_block has a real bug for this device's GPT: the parse loop (gpt.h:373) runs to a hardcoded MAX_PARTITIONS=128, but this Qualcomm GPT declares fewer entry slots, so the entry-array buffer (sized to the header's actual entries(), gpt.h:363) overruns once i passes the real count. (_calculate_used at gpt.h:342 already correctly bounds by entries() — only the parse loop doesn't.) The one-line fix is to bound the parse loop by min(entries(), MAX_PARTITIONS). ``` And its recommended fix, which successfully resolved the issue: ``` diff --git a/repos/os/src/server/part_block/gpt.h b/repos/os/src/server/part_block/gpt.h index dbe9128e01..3539024cfb 100644 --- a/repos/os/src/server/part_block/gpt.h +++ b/repos/os/src/server/part_block/gpt.h @@ -370,7 +370,17 @@ class Block::Gpt : public Block::Partition_table _gpt_total = (gpt.part_lba_end() - gpt.part_lba_start()) + 1; _gpt_used = _calculate_used(gpt, entries, gpt.entries()); - for (int i = 0; i < MAX_PARTITIONS; i++) { + /* + * Iterate only over the entries the header actually declares -- + * a GPT may advertise fewer slots than MAX_PARTITIONS (e.g. the + * Qualcomm MSM8226 eMMC declares < 128), and the entry-array + * buffer above is sized to gpt.entries(); walking to MAX_PARTITIONS + * unconditionally overruns it (Mmio Range_violation). This matches + * the bound already used by _calculate_used(). + */ + unsigned const num_entries = min(gpt.entries(), + (uint32_t)MAX_PARTITIONS); + for (unsigned i = 0; i < num_entries; i++) { Gpt_entry e(entries.range_at(i * gpt.entry_size())); ``` I am not sure of what the stance is on AI generated code or how well-documented pull requests need to be before creation, and I do not yet have the ability to test this change in a comprehensive way. I would love to contribute in any way I can, but am not yet certain of whether I have the tools or knowledge to do so correctly yet. I would greatly appreciate any feedback or advice, and thank you for your time and consideration regardless. This has been a remarkable project to learn about so far. Thanks, Ryan Davidovics

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Announcement: Genode OS Framework version 26.05 released
by Christian Helmuth 29 May '26

29 May '26

Hello everyone, I'm happy to announce the Genode 26.05 release and the completion of our migration from GitHub.com to Codeberg.org! On the technical side, we turned the prominent aspects of Sculpt OS into building blocks that can easily be reused to craft custom operating systems based on Genode. Further, we significantly improved our driver base, for example by fine-grained DMA-buffer accounting, MSI/MSI-X support, Linux 6.18 driver sources, and an advanced LTE modem stack with MBIM and QMI support. Also, Qt6 was updated to 6.8.3, a libslirp-based NIC driver de-privileges networking on Genode/Linux, and Goa is now on par with Sculpt OS 26.04. Last but not least, the release is accompanied by profoundly revised editions of the Foundations, Applications, and Platforms books. The current release contains the following changes and new features. - Revisions of the Foundations, Applications, and Platforms books - Completed migration from GitHub to Codeberg - Sculpt OS reshaped into re-usable building blocks - Touch-based window management - Device drivers - Fine-grained DMA-buffer accounting - Linux device-driver environment updated to kernel 6.18.19 - Improved drivers for Wifi, VESA, EFI boot fb, AHCI - Advanced LTE modem stack - New I2C HID driver - New Intel SOF audio driver - Qt6 updated to version 6.8.3 - De-privileged user-level networking on Linux - Goa SDK updated to Sculpt OS 26.04 Read the complete release documentation for version 26.05 here https://genode.org/documentation/release-notes/26.05 Best regards -- Christian Helmuth Genode Labs https://www.genode-labs.com/ · https://genode.org/ https://floss.social/@genode · https://genodians.org/ https://de.linkedin.com/company/genodelabs Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · Sitz Dresden Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth

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