[DragonFlyBSD - Bug #3444] (New) libkvm lookup result handling and selected caller checks

[sigttou]

Issue #3444 has been reported by sigttou.

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Bug #3444: libkvm lookup result handling and selected caller checks
http://bugs.dragonflybsd.org/issues/3444

* Author: sigttou
* Status: New
* Priority: Normal
* Category: Userland
* Target version: 6.6
* Start date: 2026-10-06
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Related report: #3347 (pctrack diagnostics).

The attached four-patch series improves the errors and prevents selected
callers from using unresolved required symbols:
# Clear requested n_type/n_value fields and improve libkvm diagnostics.
 Preserve table errors in internal callers.
# Check required symbols in dconschat, ipcs, netstat and legacy pstat TTY
 paths. Keep optional IPC subsystems usable; check IPC reads/allocations.
 Use buffered IPC errors and explicit byte counts for short reads.
# Report ccdconfig's error before closing its kvm handle.
# Add the DEBUG_PCTRACK hint only for unresolved tracking entries, and
 include the library error.



---Files--------------------------------
0002-required-symbols.patch (8.78 KB)
0004-pctrack-diagnostic.patch (1.43 KB)
0001-libkvm-lookup.patch (6.43 KB)
0003-ccdconfig-error-lifetime.patch (891 Bytes)


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