bb136aaf2c
3141eab9c6test: add functional test for ScanAndUnlinkAlreadyPrunedFiles (Andrew Toth)e252909e56test: add unit test for ScanAndUnlinkAlreadyPrunedFiles (Andrew Toth)77557dda4aprune: scan and unlink already pruned block files on startup (Andrew Toth) Pull request description: There are a few cases where we can mark a block and undo file as pruned in our block index, but not actually remove the files from disk. 1. If we call `FindFilesToPrune` or `FindFilesToPruneManual` and crash before `UnlinkPrunedFiles`. 2. If on Windows there is an open file handle to the file somewhere else when calling `fs::remove` in `UnlinkPrunedFiles` (https://en.cppreference.com/w/cpp/filesystem/remove, https://learn.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-deletefilew#remarks). This could be from another process, or if we are calling `ReadBlockFromDisk`/`ReadRawBlockFromDisk` without having a lock on `cs_main` (which has been allowed sinceccd8ef65f9). This PR mitigates this by scanning all pruned block files on startup after `LoadBlockIndexDB` and unlinking them again. ACKs for top commit: achow101: ACK3141eab9c6pablomartin4btc: re-ACK with added functional test3141eab9c6. furszy: Code review ACK3141eab9theStack: Code-review ACK3141eab9c6Tree-SHA512: 6c73bc57838ad1b7e5d441af3c4d6bf4c61c4382e2b86485e57fbb74a61240710c0ceeceb8b4834e610ecfa3175c6955c81ea4b2285fee11ca6383f472979d8d
src/node/
The src/node/ directory contains code that needs to access node state
(state in CChain, CBlockIndex, CCoinsView, CTxMemPool, and similar
classes).
Code in src/node/ is meant to be segregated from code in
src/wallet/ and src/qt/, to ensure wallet and GUI
code changes don't interfere with node operation, to allow wallet and GUI code
to run in separate processes, and to perhaps eventually allow wallet and GUI
code to be maintained in separate source repositories.
As a rule of thumb, code in one of the src/node/,
src/wallet/, or src/qt/ directories should avoid
calling code in the other directories directly, and only invoke it indirectly
through the more limited src/interfaces/ classes.
This directory is at the moment
sparsely populated. Eventually more substantial files like
src/validation.cpp and
src/txmempool.cpp might be moved there.