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Merge #20519: Handle rename failure in DumpMempool(...) by using the RenameOver(...) return value. Add [[nodiscard]] to RenameOver(...).

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ce9dd45422e1f4ecce6df68da086b8bfc2100756 Add [[nodiscard]] to RenameOver(...) (practicalswift)
9429a398e291a1b5edcfc657b94fcaf52cd1d8f9 Handle rename failure in DumpMempool(...) by using RenameOver(...) return value (practicalswift)

Pull request description:

  Handle rename failure in `DumpMempool(...)` by using the `RenameOver(...)` return value.

  Add `[[nodiscard]]` to `RenameOver(...)` to reduce the risk of similar rename issues in the future.

ACKs for top commit:
  vasild:
    ACK ce9dd454
  theStack:
    ACK ce9dd45422e1f4ecce6df68da086b8bfc2100756 🏷️

Tree-SHA512: 1e63d7f3061e1f6ea2df5750dbc1547a39bd50b6c529812a0c8a0c11d3100c241afdf14094e69b69a38bade7e54a12b2a42888545874398eaf5d02421b57e874
This commit is contained in:
MarcoFalke 2020-12-01 08:28:29 +01:00 committed by Pasta
parent 2328ead832
commit 4d8f035207
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GPG Key ID: 52527BEDABE87984
3 changed files with 7 additions and 3 deletions
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4
src/init.cpp
View File

@ -898,7 +898,9 @@ static void ThreadImport(std::vector<fs::path> vImportFiles)
fs::path pathBootstrapOld = GetDataDir() / "bootstrap.dat.old";
LogPrintf("Importing bootstrap.dat...\n");
LoadExternalBlockFile(chainparams, file);
RenameOver(pathBootstrap, pathBootstrapOld);
if (!RenameOver(pathBootstrap, pathBootstrapOld)) {
throw std::runtime_error("Rename failed");
}
} else {
LogPrintf("Warning: Could not open bootstrap file %s\n", pathBootstrap.string());
}

2
src/util/system.h
View File

@ -90,7 +90,7 @@ bool FileCommit(FILE *file);
bool TruncateFile(FILE *file, unsigned int length);
int RaiseFileDescriptorLimit(int nMinFD);
void AllocateFileRange(FILE *file, unsigned int offset, unsigned int length);
bool RenameOver(fs::path src, fs::path dest);
[[nodiscard]] bool RenameOver(fs::path src, fs::path dest);
bool LockDirectory(const fs::path& directory, const std::string lockfile_name, bool probe_only=false);
void UnlockDirectory(const fs::path& directory, const std::string& lockfile_name);
bool DirIsWritable(const fs::path& directory);

4
src/validation.cpp
View File

@ -5247,7 +5247,9 @@ bool DumpMempool()
if (!FileCommit(file.Get()))
throw std::runtime_error("FileCommit failed");
file.fclose();
RenameOver(GetDataDir() / "mempool.dat.new", GetDataDir() / "mempool.dat");
if (!RenameOver(GetDataDir() / "mempool.dat.new", GetDataDir() / "mempool.dat")) {
throw std::runtime_error("Rename failed");
}
int64_t last = GetTimeMicros();
LogPrintf("Dumped mempool: %gs to copy, %gs to dump\n", (mid-start)*MICRO, (last-mid)*MICRO);
} catch (const std::exception& e) {