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The blockchain that provides the digital content namespace for the LBRY protocol
17133 commits 22 branches 42 tags 99 MiB
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Python 15.1%
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Wladimir J. van der Laan 7cc1bd3aae
Merge #13161: wallet: Reset BerkeleyDB handle after connection fails 
b6f0b4d wallet: Improve logging when BerkeleyDB environment fails to close (Tim Ruffing)
264c643 wallet: Reset BerkeleyDB handle after connection fails (Tim Ruffing)

Pull request description:

  According to the BerkeleyDB docs, the DbEnv handle may not be accessed
  after close() has been called. This change ensures that we create a new
  handle after close() is called. This avoids a segfault when the first
  connection attempt fails and then a second connection attempt tries to
  call open() on the already closed DbEnv handle.

  Without the patch, bitcoindd reliably crashes in the second call to `set_lg_dir()` after `close()` if
  there is an issue with the database:
  ```
  2018-05-03T13:27:21Z Bitcoin Core version v0.16.99.0-a024a1841-dirty (debug build)
  [...]
  2018-05-03T13:27:21Z Using wallet directory /home/tim/.bitcoin
  2018-05-03T13:27:21Z init message: Verifying wallet(s)...
  2018-05-03T13:27:21Z Using BerkeleyDB version Berkeley DB 4.8.30: (April  9, 2010)
  2018-05-03T13:27:21Z Using wallet wallet.dat
  2018-05-03T13:27:21Z BerkeleyEnvironment::Open: LogDir=/home/tim/.bitcoin/database
  2018-05-03T13:27:21Z BerkeleyEnvironment::Open: Error -30974 opening database environment: DB_RUNRECOVERY: Fatal error, run database recovery
  2018-05-03T13:27:21Z Moved old /home/tim/.bitcoin/database to /home/tim/.bitcoin/database.1525354041.bak. Retrying.
  2018-05-03T13:27:21Z BerkeleyEnvironment::Open: LogDir=/home/tim/.bitcoin/database ErrorFile=/home/tim/.bitcoin/db.log
  [1]    14533 segmentation fault (core dumped)  ./src/bitcoind
  ```

  After the fix:
  ```
  2018-05-03T17:19:32Z Bitcoin Core version v0.16.99.0-cc09e3bd0-dirty (release build)
  [...]
  2018-05-03T17:19:32Z Using wallet directory /home/tim/.bitcoin
  2018-05-03T17:19:32Z init message: Verifying wallet(s)...
  2018-05-03T17:19:32Z Using BerkeleyDB version Berkeley DB 4.8.30: (April  9, 2010)
  2018-05-03T17:19:32Z Using wallet wallet.dat
  2018-05-03T17:19:32Z BerkeleyEnvironment::Open: LogDir=/home/tim/.bitcoin/database ErrorFile=/home/tim/.bitcoin/db.log
  2018-05-03T17:19:32Z scheduler thread start
  2018-05-03T17:19:32Z BerkeleyEnvironment::Open: Error -30974 opening database environment: DB_RUNRECOVERY: Fatal error, run database recovery
  2018-05-03T17:19:32Z Moved old /home/tim/.bitcoin/database to /home/tim/.bitcoin/database.1525367972.bak. Retrying.
  2018-05-03T17:19:32Z BerkeleyEnvironment::Open: LogDir=/home/tim/.bitcoin/database ErrorFile=/home/tim/.bitcoin/db.log
  2018-05-03T17:19:32Z Cache configuration:
  2018-05-03T17:19:32Z * Using 2.0MiB for block index database
  2018-05-03T17:19:32Z * Using 8.0MiB for chain state database
  2018-05-03T17:19:32Z * Using 440.0MiB for in-memory UTXO set (plus up to 286.1MiB of unused mempool space)
  2018-05-03T17:19:32Z init message: Loading block index..
  [...]
  ```

Tree-SHA512: b809b318e5014ec47d023dc3dc40826b9706bfb211fa08bc2d29f36971b96caa10ad48d9a3f96c03933be46fa4ff7e00e952ac77bfffb6563767fb08aa4f23d6
2018-05-14 15:06:48 +02:00
.github Make default issue text all comments to make issues more readable 2017-11-16 11:50:56 -05:00
.tx tx: Update transifex slug for 0.16 2018-01-24 16:35:40 +01:00
build-aux/m4 ax_boost_{chrono,unit_test_framework}.m4: take changes from upstream 2018-03-15 19:59:11 +01:00
contrib Enable Travis checking for two Python linting rules we are currently not violating 2018-05-11 09:18:19 +02:00
depends Merge #12715: depends: Add 'make clean' rule 2018-04-18 11:28:05 +02:00
doc Merge #10267: New -includeconf argument for including external configuration files 2018-05-09 06:36:54 +02:00
share rpcauth: Make it possible to provide a custom password 2018-05-02 05:29:22 +02:00
src Merge #13161: wallet: Reset BerkeleyDB handle after connection fails 2018-05-14 15:06:48 +02:00
test Merge #13205: [tests] Remove spurious error log in p2p_segwit.py 2018-05-14 14:21:38 +02:00
.gitattributes Separate protocol versioning from clientversion 2014-10-29 00:24:40 -04:00
.gitignore [build] .gitignore: add QT Creator artifacts 2017-12-22 12:37:00 +01:00
.travis.yml travis: Rename the build stage "check_doc" to "lint" 2018-05-12 21:44:05 +02:00
autogen.sh Add MIT license to autogen.sh and share/genbuild.sh 2016-09-21 23:01:36 +00:00
configure.ac Remove python2 from configure.ac 2018-05-01 19:03:28 +08:00
CONTRIBUTING.md doc: Mention good first issue list in CONTRIBUTING.md 2018-05-04 11:23:38 +08:00
COPYING [Trivial] Update license year range to 2018 2018-01-01 04:33:09 +09:00
INSTALL.md Update INSTALL landing redirection notice for build instructions. 2016-10-06 12:27:23 +13:00
libbitcoinconsensus.pc.in Unify package name to as few places as possible without major changes 2015-12-14 02:11:10 +00:00
Makefile.am [tests] Make rpcauth.py testable and add unit tests 2018-04-24 11:41:20 -07:00
README.md Docs: Improve documentation on standard communication channels 2018-03-22 12:58:57 -07:00

README.md

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://bitcoin.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.

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 OS X, 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.