device_health_probe

1. Overview

The device_health_probe.cpp file collects storage-device health information before recovery or imaging operations.

This is an implementation file. It contains executable logic for the subsystem, including parsing, I/O, validation, recovery flow, or graphical behavior declared by the corresponding interface.

Its paired source or interface file is device_health_probe.hpp.

Primary responsibilities:

  • Query SMART or kernel health data
  • Classify device condition and risk
  • Return diagnostic messages
  • Support safer recovery decisions

2. File Identity and Scope

  • Source path: src/device_health_probe.cpp
  • Language: C++
  • File role: implementation file
  • Physical lines: 95
  • Non-empty lines: 82
  • SHA-256: 4c652fb87f323b1430145b3bac8f58244c4145d400242966953341db72d57892

The declarations in this file use the global namespace.

3. Dependencies

3.1 Project Headers

  • device_health_probe.hpp
  • disk_reader.hpp

3.2 Standard and External Headers

  • algorithm
  • array
  • chrono

These dependencies define the file’s compile-time integration with the recovery engine, GTK interface, on-disk format decoders, operating-system services, or C++ standard library.

4. Declared Types

No class, structure, or enumeration definition is declared directly in this file.

5. Constants and Configuration Values

No preprocessor or compile-time constants were detected as top-level declarations in this file.

6. Data Members and Persistent State

No class data members are declared directly in this file, or the file primarily implements methods declared elsewhere.

7. API and Function Inventory

The following callable interfaces or definitions were detected:

  • DeviceProbeSample take_sample(DiskReader&reader,uint64_t offset,size_t size) – Implements the operation identified by this API and updates or returns the associated state.
  • std::string health_to_string(DeviceHealthState state) – Implements the operation identified by this API and updates or returns the associated state.
  • DeviceHealthReport DeviceHealthProbe::probe(const std::string&device_path,CancelCallback cancel_cb) – Inspects the source and reports matching candidates or detected metadata.
  • } else if(failures==0&&report.unstable_latency) – Implements the operation identified by this API and updates or returns the associated state.
  • } else if(failures < report.samples.size()/ 2 + 1) – Implements the operation identified by this API and updates or returns the associated state.
  • } else if(failures < report.samples.size()) – Implements the operation identified by this API and updates or returns the associated state.

8. Operational Flow

The subsystem represented by this file normally participates in the following flow:

  1. Query SMART or kernel health data.
  2. Classify device condition and risk.
  3. Return diagnostic messages.
  4. Support safer recovery decisions.
  5. Expose or execute the detected APIs: take_sample, health_to_string, probe, if.
  6. Return explicit results, progress data, recovered records, or diagnostics to the calling layer.

9. Validation and Error Handling

  • Errors are propagated through Boolean results, error strings, logs, exceptions, or status records depending on the API.
  • Byte offsets, sizes and lengths must be validated before arithmetic and before every read to avoid overflow and out-of-bounds access.
  • Input and output paths require existence checks, permission handling and safe destination construction.

10. Runtime, Concurrency, and Resource Management

  • Deterministic behavior: callers depend on explicit return values and stable data structures to distinguish successful recovery from partial or invalid results.

11. Security and Data-Recovery Considerations

  • Recovery code should prefer read-only source access and avoid writing to the original damaged medium.
  • Raw devices and image files are treated as untrusted binary input; every offset and length must remain bounded by the source size.

12. Implementation Considerations

  • The implementation should remain aligned with declarations in the paired header and preserve documented return-value semantics.
  • Large-device arithmetic uses 64-bit values; additions and multiplications should be checked before use as offsets or allocation sizes.

13. Integration with the Recovery Pipeline

  • The file belongs to the source-discovery, parsing or support layer.
  • Its results feed scanner, recovery or reporting modules through shared models.
  • The API should remain deterministic so higher layers can combine results safely.

14. Licensing and Provenance

No explicit copyright or software-license statement was detected in the opening section of this individual file. Distribution terms should therefore be verified against the project-level license and repository metadata.

The SHA-256 value in this document can be used to associate the generated documentation with the exact source version analyzed.

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