From dc1f37e51aa565f2645f0c6b28efce075e860fc4 Mon Sep 17 00:00:00 2001 From: Samuel Dobson Date: Thu, 13 May 2021 21:06:48 +1200 Subject: [PATCH] Merge bitcoin/bitcoin#21907: wallet: Do not iterate a directory if having an error while accessing it 29c9e2c2d2015ade47ed4497926363dea3f9c59b wallet: Do not iterate a directory if having an error while accessing it (Hennadii Stepanov) Pull request description: On Windows when `ListDatabases` tries to iterate any system folder, e.g., "System Volume Information", it falls into an infinite loop. This PR fixes this bug. Now the `debug.log` contains: ``` 2021-05-12T09:07:53Z ListDatabases: Access is denied D:/System Volume Information -- skipping. ``` An easy way to reproduce the bug and test this PR is to pass the `-walletdir=D:\` command-line option, and run the `listwalletdir` RPC, or File -> Open Wallet in the GUI menu. Fixes #20081. Fixes #21136. Fixes #21904. Also https://bitcoin.stackexchange.com/questions/99243/listwalletdir-access-is-denied-d-system-volume-information ACKs for top commit: prayank23: ACK https://github.com/bitcoin/bitcoin/pull/21907/commits/29c9e2c2d2015ade47ed4497926363dea3f9c59b promag: Code review ACK 29c9e2c2d2015ade47ed4497926363dea3f9c59b. meshcollider: Code review ACK 29c9e2c2d2015ade47ed4497926363dea3f9c59b Tree-SHA512: b851c88e6d09626f4cb81acc2fa59a563b2aee64582963285715bf785c64b872e8bf738aa6b27bdbaf4c3e5c8565c2dc2c802135f9aa1f48b4b913435bc5d793 --- src/wallet/db.cpp | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/src/wallet/db.cpp b/src/wallet/db.cpp index 0231430ba5..2e38e96d43 100644 --- a/src/wallet/db.cpp +++ b/src/wallet/db.cpp @@ -18,7 +18,12 @@ std::vector ListDatabases(const fs::path& wallet_dir) for (auto it = fs::recursive_directory_iterator(wallet_dir, ec); it != fs::recursive_directory_iterator(); it.increment(ec)) { if (ec) { - LogPrintf("%s: %s %s\n", __func__, ec.message(), it->path().string()); + if (fs::is_directory(*it)) { + it.no_push(); + LogPrintf("%s: %s %s -- skipping.\n", __func__, ec.message(), it->path().string()); + } else { + LogPrintf("%s: %s %s\n", __func__, ec.message(), it->path().string()); + } continue; }