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Wladimir J. van der Laan 92cf3a22e3
Merge #21007: bitcoind: Add -daemonwait option to wait for initialization 
e017a913d0 bitcoind: Add -daemonwait option to wait for initialization (Wladimir J. van der Laan)
c3e6fdee6d shutdown: Use RAII TokenPipe in shutdown (Wladimir J. van der Laan)
612f746a8f util: Add RAII TokenPipe (Wladimir J. van der Laan)

Pull request description:

  This adds a `-daemonwait` flag that does the same as `-daemon` except that it, from a user perspective, backgrounds the process only after initialization is complete. This is similar to the behaviour of some other software such as c-lightning.

  This can be useful when the process launching bitcoind wants to guarantee that either the RPC server is running, or that initialization failed, before continuing. The exit code indicates the initialization result.

  The use of the libc function `daemon()` is replaced by a custom implementation which is inspired by the [glibc implementation](https://github.com/lattera/glibc/blob/master/misc/daemon.c#L44), but which also creates a pipe from the child to the parent process for communication.

  An additional advantage of having our own `daemon()` implementation is that no MACOS-specific pragmas are needed anymore to silence a deprecation warning.

  TODO:

  - [x] Factor out `token_read` and `token_write` to an utility, and use  them in `shutdown.cpp` as well—this is exactly the same kind of communication mechanism.

      - [x] RAII-ify pipe endpoints.

  - [x] Improve granularity of the `configure.ac` checks. This currently  still checks for the function `daemon()` which makes no sense as  it's not used. It should check for individual functions such as
    `fork()` and `setsid()` etc—the former being required, the second optional.

  - [-] ~~Signal propagation during initialization: if say, pressing Ctrl-C during `-daemonwait` it would be good to pass this SIGINT on to the child process instead of detaching the parent process and letting the child run free.~~ This is not necessary, see https://github.com/bitcoin/bitcoin/pull/21007#issuecomment-769007341.

  Future:

  - Consider if it makes sense to use this in the RPC tests (there would be no more need for "is RPC ready" polling loops). I think this is out of scope for this PR.

ACKs for top commit:
  jonatack:
    Tested ACK e017a913d0 checked change since previous review is move-only

Tree-SHA512: 53369b8ca2247e4cf3af8cb2cfd5b3399e8e0e3296423d64be987004758162a7ddc1287b01a92d7692328edcb2da4cf05d279b1b4ef61a665b71440ab6a6dbe2
2021-03-11 15:27:47 +01:00
..
bench Move MakeNoLogFileContext to common libtest_util, and use it in bench 2021-03-03 09:17:37 +01:00
compat assumptions: check C++17 assumption with MSVC 2021-02-23 12:51:50 +08:00
config
consensus scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
crc32c build: Update crc32c subtree 2020-12-08 19:26:30 +01:00
crypto refactor: Improve encapsulation between MuHash3072 and Num3072 2021-01-24 16:28:27 +01:00
index Avoid accessing nullpointer in BaseIndex::GetSummary() 2021-02-11 11:39:45 +01:00
interfaces Merge #18842: wallet: Mark replaced tx to not be in the mempool anymore 2021-03-09 07:54:18 +01:00
leveldb
logging
node Merge #21270: [Bundle 4/n] Prune g_chainman usage in validation-adjacent modules 2021-03-11 11:48:55 +01:00
policy refactor: Use C++17 std::array deduction for ALL_FEE_ESTIMATE_HORIZONS 2021-01-03 18:38:31 +01:00
primitives scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
qt Merge #21376: depends: Qt 5.12.10 2021-03-11 11:51:52 +01:00
rpc node/coinstats: Pass in BlockManager to GetUTXOStats 2021-03-08 15:54:31 -05:00
script Correction for VerifyTaprootCommitment comments 2021-03-01 09:01:48 -05:00
secp256k1 Update secp256k1 subtree to latest master 2020-10-27 23:08:48 -07:00
support Merge #20464: refactor: Treat CDataStream bytes as uint8_t 2021-02-01 15:17:28 +01:00
test Merge #21270: [Bundle 4/n] Prune g_chainman usage in validation-adjacent modules 2021-03-11 11:48:55 +01:00
univalue Update univalue subtree 2020-11-19 15:48:24 +01:00
util Merge #21007: bitcoind: Add -daemonwait option to wait for initialization 2021-03-11 15:27:47 +01:00
wallet Merge #21331: rpc: replace wallet raw pointers with references (#18592 rebased) 2021-03-10 08:24:53 +01:00
zmq rpc: Remove duplicate name and argNames from CRPCCommand 2021-01-28 08:19:52 +01:00
.clang-format [tools] Allow argument/parameter bin packing in clang-format 2021-02-18 10:07:37 +00:00
addrdb.cpp log: Clarify log message when file does not exist 2021-02-18 15:08:35 +01:00
addrdb.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
addrman.cpp refactor: remove boost::thread_group usage 2021-01-29 15:39:44 +08:00
addrman.h [addrman] Don't repeat "Bucketing method was updated" log multiple times 2021-01-29 12:39:55 +00:00
amount.h
arith_uint256.cpp
arith_uint256.h
attributes.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
banman.cpp log: Clarify log message when file does not exist 2021-02-18 15:08:35 +01:00
banman.h Clean up separated ban/discourage interface 2020-07-03 20:43:55 -07:00
base58.cpp refactor: replace sizeof(a)/sizeof(a[0]) by std::size (C++17) 2021-01-31 17:35:16 +01:00
base58.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
bech32.cpp
bech32.h
bitcoin-cli-res.rc Drop the leading 0 from the version number 2020-11-18 12:00:57 -05:00
bitcoin-cli.cpp cli: update -netinfo help doc following the merge of 882ce251 2021-02-17 15:05:42 +01:00
bitcoin-tx-res.rc Drop the leading 0 from the version number 2020-11-18 12:00:57 -05:00
bitcoin-tx.cpp Move TX_MAX_STANDARD_VERSION to policy 2020-12-10 11:12:08 +01:00
bitcoin-util-res.rc Add bitcoin-util command line utility 2021-01-12 18:34:25 +10:00
bitcoin-util.cpp Merge #20938: build: fix linking against -latomic when building for riscv 2021-01-18 18:33:24 +01:00
bitcoin-wallet-res.rc Drop the leading 0 from the version number 2020-11-18 12:00:57 -05:00
bitcoin-wallet.cpp util: Add ArgsManager::GetCommand() and use it in bitcoin-wallet 2021-01-21 19:31:28 +01:00
bitcoind-res.rc Drop the leading 0 from the version number 2020-11-18 12:00:57 -05:00
bitcoind.cpp bitcoind: Add -daemonwait option to wait for initialization 2021-03-04 18:24:00 +01:00
blockencodings.cpp scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
blockencodings.h Get rid of -Wthread-safety-precise warnings 2020-05-28 09:55:39 +03:00
blockfilter.cpp scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
blockfilter.h [indexes] Fix default [de]serialization of BlockFilter. 2020-05-26 17:27:15 -04:00
bloom.cpp scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
bloom.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
chain.cpp
chain.h simplify ChainstateManager::SnapshotBlockhash() return semantics 2021-02-12 07:53:29 -06:00
chainparams.cpp Merge #15946: Allow maintaining the blockfilterindex when using prune 2021-02-18 09:40:42 +01:00
chainparams.h chainparams: add allowed assumeutxo values 2021-02-12 07:53:22 -06:00
chainparamsbase.cpp scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
chainparamsbase.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
chainparamsseeds.h net: Hardcoded seeds update for 0.21 2020-10-25 14:25:00 +01:00
checkqueue.h refactor: Drop boost::thread stuff in CCheckQueue 2020-09-24 06:55:34 +03:00
clientversion.cpp scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
clientversion.h refactor: Move STRINGIZE macro to macros.h 2021-02-01 22:30:05 +02:00
coins.cpp simplify ChainstateManager::SnapshotBlockhash() return semantics 2021-02-12 07:53:29 -06:00
coins.h simplify ChainstateManager::SnapshotBlockhash() return semantics 2021-02-12 07:53:29 -06:00
compat.h net: extend Sock with methods for robust send & read until terminator 2021-03-01 17:36:16 +01:00
compressor.cpp
compressor.h
core_io.h util: Avoid invalid integer negation in ValueFromAmount: make ValueFromAmount(const CAmount& n) well-defined also when n is std::numeric_limits<CAmount>::min() 2021-03-02 16:05:28 +00:00
core_memusage.h
core_read.cpp doc: fix various typos 2021-01-04 12:31:31 +08:00
core_write.cpp util: Avoid invalid integer negation in ValueFromAmount: make ValueFromAmount(const CAmount& n) well-defined also when n is std::numeric_limits<CAmount>::min() 2021-03-02 16:05:28 +00:00
cuckoocache.h doc: Use https URLs where possible 2021-01-04 12:23:16 +08:00
dbwrapper.cpp
dbwrapper.h Merge #20464: refactor: Treat CDataStream bytes as uint8_t 2021-02-01 15:17:28 +01:00
dummywallet.cpp wallet: add -signer argument for external signer command 2021-02-23 14:34:30 +01:00
flatfile.cpp log: Move "Pre-allocating up to position 0x[...] in [...].dat" log message to debug category 2021-02-10 20:46:25 +00:00
flatfile.h Merge #18317: Serialization improvements step 6 (all except wallet/gui) 2020-05-20 07:30:29 -04:00
fs.cpp Replace fs::absolute calls with AbsPathJoin calls 2021-01-15 22:48:15 +01:00
fs.h Replace fs::absolute calls with AbsPathJoin calls 2021-01-15 22:48:15 +01:00
hash.cpp doc: Use https URLs where possible 2021-01-04 12:23:16 +08:00
hash.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
httprpc.cpp rpc: Validate -rpcauth arguments 2020-11-23 21:02:54 +00:00
httprpc.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
httpserver.cpp net: Drop unneeded headers when compat.h included 2020-10-22 21:45:20 +03:00
httpserver.h
i2p.cpp net: implement the necessary parts of the I2P SAM protocol 2021-03-01 18:19:37 +01:00
i2p.h net: implement the necessary parts of the I2P SAM protocol 2021-03-01 18:19:37 +01:00
indirectmap.h
init.cpp Merge #21007: bitcoind: Add -daemonwait option to wait for initialization 2021-03-11 15:27:47 +01:00
init.h bitcoind: Add -daemonwait option to wait for initialization 2021-03-04 18:24:00 +01:00
key.cpp doc: Use https URLs where possible 2021-01-04 12:23:16 +08:00
key.h
key_io.cpp Better error messages for invalid addresses 2021-01-24 02:44:53 +01:00
key_io.h Better error messages for invalid addresses 2021-01-24 02:44:53 +01:00
logging.cpp net: implement the necessary parts of the I2P SAM protocol 2021-03-01 18:19:37 +01:00
logging.h net: implement the necessary parts of the I2P SAM protocol 2021-03-01 18:19:37 +01:00
Makefile.am Merge #21007: bitcoind: Add -daemonwait option to wait for initialization 2021-03-11 15:27:47 +01:00
Makefile.bench.include net: Add libnatpmp support 2021-01-07 18:07:09 +02:00
Makefile.crc32c.include build: Update crc32c subtree 2020-12-08 19:26:30 +01:00
Makefile.leveldb.include
Makefile.qt.include gui: Add Roboto Mono font 2021-02-21 21:01:02 +02:00
Makefile.qt_locale.include qt: Pre-splitoff translations update 2020-10-27 19:40:44 +01:00
Makefile.qttest.include net: Add libnatpmp support 2021-01-07 18:07:09 +02:00
Makefile.test.include Merge #19203: net: Add regression fuzz harness for CVE-2017-18350. Add FuzzedSocket. 2021-03-03 14:41:05 +01:00
Makefile.test_fuzz.include build: compile libnatpmp with -DNATPMP_STATICLIB on Windows 2021-03-04 12:34:46 +08:00
Makefile.test_util.include build: compile libnatpmp with -DNATPMP_STATICLIB on Windows 2021-03-04 12:34:46 +08:00
mapport.cpp net: Add -natpmp command line option 2021-01-07 18:07:09 +02:00
mapport.h net: Add -natpmp command line option 2021-01-07 18:07:09 +02:00
memusage.h
merkleblock.cpp doc: fix various typos 2021-01-04 12:31:31 +08:00
merkleblock.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
miner.cpp miner: Pass in blockman to ::RegenerateCommitments 2021-03-08 15:54:31 -05:00
miner.h miner: Pass in blockman to ::RegenerateCommitments 2021-03-08 15:54:31 -05:00
net.cpp net: Replace enum CConnMan::NumConnections with enum class ConnectionDirection 2021-03-04 19:54:17 +00:00
net.h net: Replace enum CConnMan::NumConnections with enum class ConnectionDirection 2021-03-04 19:54:17 +00:00
net_permissions.cpp scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
net_permissions.h Reduce MAX_PEER_TX_ANNOUNCEMENTS for non-PF_RELAY peers 2020-10-12 12:14:53 -07:00
net_processing.cpp Merge #21270: [Bundle 4/n] Prune g_chainman usage in validation-adjacent modules 2021-03-11 11:48:55 +01:00
net_processing.h Merge #21015: Make all of net_processing (and some of net) use std::chrono types 2021-03-04 20:13:43 +08:00
net_types.h
netaddress.cpp net: add I2P to the reachability map 2021-03-01 18:19:46 +01:00
netaddress.h net: extend CNetAddr::SetSpecial() to support I2P 2021-03-01 13:22:11 +01:00
netbase.cpp fuzz: Add FUZZED_SOCKET_FAKE_LATENCY mode to FuzzedSock to allow for fuzzing timeout logic 2021-03-02 21:44:51 +00:00
netbase.h net: Replace enum CConnMan::NumConnections with enum class ConnectionDirection 2021-03-04 19:54:17 +00:00
netmessagemaker.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
noui.cpp scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
noui.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
optional.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
outputtype.cpp refactor: Use C++17 std::array deduction for OUTPUT_TYPES 2021-01-03 18:37:59 +01:00
outputtype.h refactor: Use C++17 std::array deduction for OUTPUT_TYPES 2021-01-03 18:37:59 +01:00
pow.cpp
pow.h
prevector.h
protocol.cpp refactor: init vectors via std::{begin,end} to avoid pointer arithmetic 2021-01-31 17:35:01 +01:00
protocol.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
psbt.cpp Merge #20464: refactor: Treat CDataStream bytes as uint8_t 2021-02-01 15:17:28 +01:00
psbt.h scripted-diff: Use [[nodiscard]] (C++17) instead of NODISCARD 2020-11-26 09:05:59 +00:00
pubkey.cpp scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
pubkey.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
random.cpp refactor: replace sizeof(a)/sizeof(a[0]) by std::size (C++17) 2021-01-31 17:35:16 +01:00
random.h
randomenv.cpp util: Allow use of C++14 chrono literals 2020-12-08 16:47:36 +01:00
randomenv.h
rest.cpp Merge #20429: refactor: replace (sizeof(a)/sizeof(a[0])) with C++17 std::size 2021-02-18 07:53:37 +01:00
reverse_iterator.h
scheduler.cpp Add include for std::bind. 2021-01-13 02:05:00 +01:00
scheduler.h refactor: remove boost::thread_group usage 2021-01-29 15:39:44 +08:00
serialize.h Support bypassing range check in ReadCompactSize 2020-10-09 10:32:19 +02:00
shutdown.cpp shutdown: Use RAII TokenPipe in shutdown 2021-03-04 18:24:00 +01:00
shutdown.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
signet.cpp refactor: Remove SignetTxs::m_valid and use optional instead 2020-09-22 22:31:31 +02:00
signet.h refactor: Remove SignetTxs::m_valid and use optional instead 2020-09-22 22:31:31 +02:00
span.h Merge #19387: span: update constructors to match c++20 draft spec and add lifetimebound attribute 2020-11-25 15:18:33 +01:00
streams.h Merge #20464: refactor: Treat CDataStream bytes as uint8_t 2021-02-01 15:17:28 +01:00
sync.cpp refactor: remove straggling boost::mutex usage 2021-01-26 15:57:28 +08:00
sync.h Merge #20495: sync: Use decltype(auto) return type for WITH_LOCK 2021-01-12 15:56:19 +08:00
threadinterrupt.cpp
threadinterrupt.h
threadsafety.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
timedata.cpp Avoid the use of abs64 in timedata 2020-10-12 19:50:16 -07:00
timedata.h
tinyformat.h refactor: Improve use of explicit keyword 2020-12-01 18:36:39 +01:00
torcontrol.cpp torcontrol: Move TorControlReply, TorControlConnection and TorController to improve testability 2021-03-02 12:21:32 +00:00
torcontrol.h tests: Add fuzzing harness for TorController 2021-03-02 12:21:32 +00:00
txdb.cpp txdb: don't reset during in-memory cache resize 2021-02-12 07:53:32 -06:00
txdb.h txdb: add CCoinsViewDB::ChangeCacheSize 2020-07-01 14:44:24 -04:00
txmempool.cpp Merge #21055: [Bundle 3/n] Prune remaining g_chainman usage in validation functions 2021-03-04 14:55:47 +01:00
txmempool.h Merge #21055: [Bundle 3/n] Prune remaining g_chainman usage in validation functions 2021-03-04 14:55:47 +01:00
txorphanage.cpp scripted-diff: Update txorphanage naming convention 2021-02-27 01:08:09 +10:00
txorphanage.h txorphanage: comment improvements 2021-03-02 19:40:11 +10:00
txrequest.cpp refactor: Improve use of explicit keyword 2020-12-01 18:36:39 +01:00
txrequest.h Report and verify expirations 2020-10-12 12:14:53 -07:00
uint256.cpp scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
uint256.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
undo.h
validation.cpp node/coinstats: Pass in BlockManager to GetUTXOStats 2021-03-08 15:54:31 -05:00
validation.h validation: Remove extraneous LoadGenesisBlock function prototype 2021-03-08 15:54:21 -05:00
validationinterface.cpp Add 'sequence' zmq publisher to track all block (dis)connects, mempool deltas 2020-09-22 11:34:30 -04:00
validationinterface.h Add 'sequence' zmq publisher to track all block (dis)connects, mempool deltas 2020-09-22 11:34:30 -04:00
version.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
versionbits.cpp
versionbits.h validation: Remove global ::VersionBitsTip{State,SinceHeight,Statistics} 2021-03-01 17:56:07 -05:00
versionbitsinfo.cpp scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
versionbitsinfo.h
walletinitinterface.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
warnings.cpp scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00
warnings.h scripted-diff: Bump copyright headers 2020-12-31 09:45:41 +01:00