fleet/orbit/changes/36799-disk-space-table
Nico b89cc578ca
Add disk_space fleetd table for accurate macOS disk space reporting (#41575)
**Related issue:** Resolves #36799, Sub-task: #41556

# Checklist for submitter

- [x] Changes file added for user-visible changes in `changes/`.
- [x] Input data is properly validated, `SELECT *` is avoided, SQL
injection is prevented (using placeholders for values in statements), JS
inline code is prevented especially for url redirects

## Testing

- [x] Added/updated automated tests
- [x] QA'd all new/changed functionality manually

<img width="924" height="278" alt="Screenshot 2026-03-16 at 10 46 38 AM"
src="https://github.com/user-attachments/assets/313b6650-a849-4bc2-ba14-a62d3d13b60c"
/>
<img width="1441" height="300" alt="Screenshot 2026-03-16 at 10 46
44 AM"
src="https://github.com/user-attachments/assets/915cfd26-168f-4621-bcf5-6c26c40e5faf"
/>
<img width="1923" height="788" alt="Screenshot 2026-03-16 at 10 54
04 AM"
src="https://github.com/user-attachments/assets/62356a3e-84fe-4561-b7ad-0a35c9db3b2a"
/>
<img width="2529" height="483" alt="Screenshot 2026-03-16 at 10 47
02 AM"
src="https://github.com/user-attachments/assets/4dc51073-2c24-4934-bd9d-c5ee648d5ae1"
/>

Tested that with latest released fleetd (1.53.0), we still ingest the
available disk space. There's about 5% difference in the UI vs in the
macOS "Get Info" dialog (expected, since we use the old query, now
called `disk_space_darwin_legacy`):

<img width="267" height="306" alt="Screenshot 2026-03-17 at 8 47 22 AM"
src="https://github.com/user-attachments/assets/73fc1eef-a32c-4d8d-a9ca-13980885f8fe"
/>
<img width="883" height="407" alt="Screenshot 2026-03-17 at 8 47 33 AM"
src="https://github.com/user-attachments/assets/98851b9b-82a8-4ac8-af5c-dbb878f85fad"
/>
<img width="159" height="127" alt="Screenshot 2026-03-17 at 8 47 40 AM"
src="https://github.com/user-attachments/assets/209f784a-29a8-4af5-b95d-0f9bd59917c9"
/>

Also tested running with vanilla osquery by stopping fleetd and then
running osquery manually (adding the `--allow_unsafe` flag). Result is
same as above, `disk_space_darwin_legacy` is used:

<img width="1152" height="418" alt="Screenshot 2026-03-17 at 8 59 23 AM"
src="https://github.com/user-attachments/assets/2b34d23d-61de-4ec1-8d1c-2d3ddb682d11"
/>
<img width="893" height="414" alt="Screenshot 2026-03-17 at 8 59 28 AM"
src="https://github.com/user-attachments/assets/d28ee8fb-08c5-434f-abfa-3825b27ac73b"
/>



## Summary

- Adds a new macOS-only fleetd table `disk_space` that uses
`NSURLVolumeAvailableCapacityForImportantUsageKey` to report available
disk capacity including purgeable storage — matching what macOS shows in
Finder's "Get Info" dialog.
- Adds a new `disk_space_darwin` detail query that uses the new table
(with Discovery, so it only runs on hosts with fleetd ≥ 1.54.0).
- Restricts the existing `disk_space_unix` query to Linux only (darwin
was removed since the new query handles it).
- Adds schema documentation for the new table.

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Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-03-17 12:59:17 -03:00

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- Added a new `disk_space` fleetd table for macOS that reports accurate available disk space including purgeable storage.