Jim906 b14c5d98b2 FAT: prevent sector count overflow
* Don't let users format a volume with more sectors than can fit in
  the 32 bits that the FAT spec provides for storing the sector count on
  disk. Since dosfs_initialize() assumes 512-byte sectors, this
  will truncate FAT volumes at ~2.2 TB when a user tries for format
  a partition larger than that.
* Mount read-only if the sector count read from disk is lower than it
  should be.
* Account for an unrelated overflow in struct device_geometry that
  could theoretically occur when mounting a large FAT image file.
* Set the struct mount read-only flag earlier during mounting, to
  avoid a fillinusemap error when changing to read-only inside
  fat_volume_init.
* Addresses #19079.

Change-Id: I3d15940dc18f50e5c8562fefee3b1749c4b93b6f
Reviewed-on: https://review.haiku-os.org/c/haiku/+/8426
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
2024-09-30 15:52:06 +00:00
2024-09-28 08:06:26 +00:00
2024-09-30 15:52:06 +00:00
2018-01-04 00:04:02 -06:00
2021-06-13 21:06:58 +00:00

Haiku

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Haiku is an open-source operating system that specifically targets personal computing. Inspired by the BeOS, Haiku is fast, simple to use, easy to learn and yet very powerful.

Goals

  • Sensible defaults with minimal configuration required.
  • Clean, clear, concise code.
  • Unified desktop environment.

Trying Haiku

Haiku provides pre-built nightly images and release images. Haiku is compatible with a large variety of hardware, but in case you don't want to "take the plunge" and install Haiku on bare metal, you can install it on a virtual machine (VM) instead. If you've never used a VM before, you can follow one of the "Emulating Haiku" guides.

Compiling Haiku

See ReadMe.Compiling.

Contributing

Haiku is a meritocratic open source project with a large variety of tasks. Even if you can't write code, you can still help! Haiku needs designers, (technical) writers, translators, testers... Get involved and help out!

Contributing code

If you're submitting a patch to us, please make sure you're following the patch submitting guidelines.

If you're having trouble finding something in the source tree, you can use one of our web-based source code browsers:

Contributing documentation

The main piece of documentation that still needs work are the API docs (found in the tree at docs/user). Just find an undocumented class, write documentation for it, and submit a patch.

Contributing translations

See wiki:i18n.

Contributing software ports

See HaikuPorts.

Contributing to our infrastructure

See Infrastructure.

Description
The Haiku operating system
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