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Merge #16212: addrdb: Avoid eating inodes - remove temporary files created by SerializeFileDB in case of errors

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d9753383b9 addrdb: Remove temporary files created in SerializeFileDB. Fixes non-determinism in unit tests. (practicalswift)

Pull request description:

  Remove temporary files created in `SerializeFileDB` in case of errors.

  _Edit: Previously this was hit non-deterministically from the tests: that is no longer the case but the cleanup issue remains :-)_

ACKs for top commit:
  laanwj:
    code-review ACK d9753383b9

Tree-SHA512: e72b74b8de411f433bd8bb354cacae07ab75a240db6232bc6a37802ccd8086bff5275ce3d196ddde033d8ab9e2794bb8f60eb83554af7ec2e9f91d6186cb4647
This commit is contained in:
Wladimir J. van der Laan 2019-07-02 13:55:10 +02:00
commit 3ccab6470a
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GPG key ID: 1E4AED62986CD25D
1 changed files with 16 additions and 4 deletions
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20
src/addrdb.cpp
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@ -44,18 +44,30 @@ bool SerializeFileDB(const std::string& prefix, const fs::path& path, const Data
fs::path pathTmp = GetDataDir() / tmpfn;
FILE *file = fsbridge::fopen(pathTmp, "wb");
CAutoFile fileout(file, SER_DISK, CLIENT_VERSION);
if (fileout.IsNull())
if (fileout.IsNull()) {
fileout.fclose();
remove(pathTmp);
return error("%s: Failed to open file %s", __func__, pathTmp.string());
}
// Serialize
if (!SerializeDB(fileout, data)) return false;
if (!FileCommit(fileout.Get()))
if (!SerializeDB(fileout, data)) {
fileout.fclose();
remove(pathTmp);
return false;
}
if (!FileCommit(fileout.Get())) {
fileout.fclose();
remove(pathTmp);
return error("%s: Failed to flush file %s", __func__, pathTmp.string());
}
fileout.fclose();
// replace existing file, if any, with new file
if (!RenameOver(pathTmp, path))
if (!RenameOver(pathTmp, path)) {
remove(pathTmp);
return error("%s: Rename-into-place failed", __func__);
}
return true;
}