Wladimir J. van der Laan 3e1ca1348c
Merge #15278: Improve PID file error handling
3782075a5fd4ad0c15a6119e8cdaf136898f679e Move all PID file stuff to init.cpp (Hennadii Stepanov)
561e375c73a37934fe77a519762d81edf7a3325c Make PID file creating errors fatal (Hennadii Stepanov)
745a2ace18ce857bc712d7e66c8bad7c082c07e2 Improve PID file removing errors logging (Hennadii Stepanov)

Pull request description:

  Digging into #15240 the lack of the proper logging has been discovered.
  Fixed by this PR.

  UPDATE (inspired by @laanwj's [comment](https://github.com/bitcoin/bitcoin/pull/15278#discussion_r252641810)):
  Not being able to create the PID file is fatal now.

  Output of `bitcoind`:

  ```
  $ src/bitcoind -pid=/run/bitcoind/bitcoind.pid
  2019-02-01T23:20:10Z Bitcoin Core version v0.17.99.0-561e375c7 (release build)
  2019-02-01T23:20:10Z Assuming ancestors of block 0000000000000037a8cd3e06cd5edbfe9dd1dbcc5dacab279376ef7cfc2b4c75 have valid signatures.
  2019-02-01T23:20:10Z Setting nMinimumChainWork=00000000000000000000000000000000000000000000007dbe94253893cbd463
  2019-02-01T23:20:10Z Using the 'sse4(1way),sse41(4way),avx2(8way)' SHA256 implementation
  2019-02-01T23:20:10Z Using RdRand as an additional entropy source
  2019-02-01T23:20:11Z Error: Unable to create the PID file '/run/bitcoind/bitcoind.pid': No such file or directory
  Error: Unable to create the PID file '/run/bitcoind/bitcoind.pid': No such file or directory
  2019-02-01T23:20:11Z Shutdown: In progress...
  2019-02-01T23:20:11Z Shutdown: Unable to remove PID file: File does not exist
  2019-02-01T23:20:11Z Shutdown: done
  ```

  Output of `bitcoin-qt`:
  ![screenshot from 2019-02-02 01-19-05](https://user-images.githubusercontent.com/32963518/52154886-9349b600-2688-11e9-8128-470f16790305.png)

  **Notes for reviewers**
  1. `CreatePidFile()` has been moved from `util/system.cpp` to `init.cpp` for the following reasons:
  - to get the ability to use `InitError()`
  - now `init.cpp` contains code of both creating PID file and removing it

  2. Regarding 0.18 release process: this PR modifies 1 string and introduces 2 new ones.

Tree-SHA512: ac07d0f800e61ec759e427d0afc0ca43d67f232e977662253963afdd0a220d34b871050f58149fc9fabd427bfc8e0d3f6a6032f2a38f30ad366fc0d074b0f2b3
2019-02-21 09:23:10 +01:00

Bitcoin Core integration/staging tree

Build Status

https://bitcoincore.org

What is Bitcoin?

Bitcoin is an experimental digital currency that enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. Bitcoin Core is the name of open source software which enables the use of this currency.

For more information, as well as an immediately useable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/, or read the original whitepaper.

License

Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see https://opensource.org/licenses/MIT.

Development Process

The master branch is regularly built and tested, but is not guaranteed to be completely stable. Tags are created regularly to indicate new official, stable release versions of Bitcoin Core.

The contribution workflow is described in CONTRIBUTING.md and useful hints for developers can be found in doc/developer-notes.md.

Testing

Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people's pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.

Automated Testing

Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run (assuming they weren't disabled in configure) with: make check. Further details on running and extending unit tests can be found in /src/test/README.md.

There are also regression and integration tests, written in Python, that are run automatically on the build server. These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py

The Travis CI system makes sure that every pull request is built for Windows, Linux, and macOS, and that unit/sanity tests are run automatically.

Manual Quality Assurance (QA) Testing

Changes should be tested by somebody other than the developer who wrote the code. This is especially important for large or high-risk changes. It is useful to add a test plan to the pull request description if testing the changes is not straightforward.

Translations

Changes to translations as well as new translations can be submitted to Bitcoin Core's Transifex page.

Translations are periodically pulled from Transifex and merged into the git repository. See the translation process for details on how this works.

Important: We do not accept translation changes as GitHub pull requests because the next pull from Transifex would automatically overwrite them again.

Translators should also subscribe to the mailing list.

Description
Bitcoin Core integration/staging tree
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