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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server440 file guides

Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.

27,278 bytes · SHA-256 691364f208a440aa… · View upstream ↗

1// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file. See the AUTHORS file for names of contributors.
4
5#include <dirent.h>
6#include <fcntl.h>
7#include <pthread.h>
8#include <sys/mman.h>
9#include <sys/resource.h>
10#include <sys/stat.h>
11#include <sys/time.h>
12#include <sys/types.h>
13#include <unistd.h>
14
15#include <atomic>
16#include <cerrno>
17#include <cstddef>
18#include <cstdint>
19#include <cstdio>
20#include <cstdlib>
21#include <cstring>
22#include <limits>
23#include <queue>
24#include <set>
25#include <string>
26#include <thread>
27#include <type_traits>
28#include <utility>
29
30#include "leveldb/env.h"
31#include "leveldb/slice.h"
32#include "leveldb/status.h"
33#include "port/port.h"
34#include "port/thread_annotations.h"
35#include "util/env_posix_test_helper.h"
36#include "util/posix_logger.h"
37
38namespace leveldb {
39
40namespace {
41
42// Set by EnvPosixTestHelper::SetReadOnlyMMapLimit() and MaxOpenFiles().
43int g_open_read_only_file_limit = -1;
44
45// Up to 1000 mmap regions for 64-bit binaries; none for 32-bit.
46constexpr const int kDefaultMmapLimit = (sizeof(void*) >= 8) ? 1000 : 0;
47
48// Can be set using EnvPosixTestHelper::SetReadOnlyMMapLimit().
49int g_mmap_limit = kDefaultMmapLimit;
50
51// Common flags defined for all posix open operations
52#if HAVE_O_CLOEXEC
53constexpr const int kOpenBaseFlags = O_CLOEXEC;
54#else
55constexpr const int kOpenBaseFlags = 0;
56#endif  // defined(HAVE_O_CLOEXEC)
57
58constexpr const size_t kWritableFileBufferSize = 65536;
59
60Status PosixError(const std::string& context, int error_number) {
61  if (error_number == ENOENT) {
62    return Status::NotFound(context, std::strerror(error_number));
63  } else {
64    return Status::IOError(context, std::strerror(error_number));
65  }
66}
67
68// Helper class to limit resource usage to avoid exhaustion.
69// Currently used to limit read-only file descriptors and mmap file usage
70// so that we do not run out of file descriptors or virtual memory, or run into
71// kernel performance problems for very large databases.
72class Limiter {
73 public:
74  // Limit maximum number of resources to |max_acquires|.
75  Limiter(int max_acquires) : acquires_allowed_(max_acquires) {}
76
77  Limiter(const Limiter&) = delete;
78  Limiter operator=(const Limiter&) = delete;
79
80  // If another resource is available, acquire it and return true.
81  // Else return false.
82  bool Acquire() {
83    int old_acquires_allowed =
84        acquires_allowed_.fetch_sub(1, std::memory_order_relaxed);
85
86    if (old_acquires_allowed > 0) return true;
87
88    acquires_allowed_.fetch_add(1, std::memory_order_relaxed);
89    return false;
90  }
91
92  // Release a resource acquired by a previous call to Acquire() that returned
93  // true.
94  void Release() { acquires_allowed_.fetch_add(1, std::memory_order_relaxed); }
95
96 private:
97  // The number of available resources.
98  //
99  // This is a counter and is not tied to the invariants of any other class, so
100  // it can be operated on safely using std::memory_order_relaxed.
101  std::atomic<int> acquires_allowed_;
102};
103
104// Implements sequential read access in a file using read().
105//
106// Instances of this class are thread-friendly but not thread-safe, as required
107// by the SequentialFile API.
108class PosixSequentialFile final : public SequentialFile {
109 public:
110  PosixSequentialFile(std::string filename, int fd)
111      : fd_(fd), filename_(filename) {}
112  ~PosixSequentialFile() override { close(fd_); }
113
114  Status Read(size_t n, Slice* result, char* scratch) override {
115    Status status;
116    while (true) {
117      ::ssize_t read_size = ::read(fd_, scratch, n);
118      if (read_size < 0) {  // Read error.
119        if (errno == EINTR) {
120          continue;  // Retry
121        }
122        status = PosixError(filename_, errno);
123        break;
124      }
125      *result = Slice(scratch, read_size);
126      break;
127    }
128    return status;
129  }
130
131  Status Skip(uint64_t n) override {
132    if (::lseek(fd_, n, SEEK_CUR) == static_cast<off_t>(-1)) {
133      return PosixError(filename_, errno);
134    }
135    return Status::OK();
136  }
137
138  virtual std::string GetName() const override { return filename_; }
139
140 private:
141  const int fd_;
142  const std::string filename_;
143};
144
145// Implements random read access in a file using pread().
146//
147// Instances of this class are thread-safe, as required by the RandomAccessFile
148// API. Instances are immutable and Read() only calls thread-safe library
149// functions.
150class PosixRandomAccessFile final : public RandomAccessFile {
151 public:
152  // The new instance takes ownership of |fd|. |fd_limiter| must outlive this
153  // instance, and will be used to determine if .
154  PosixRandomAccessFile(std::string filename, int fd, Limiter* fd_limiter)
155      : has_permanent_fd_(fd_limiter->Acquire()),
156        fd_(has_permanent_fd_ ? fd : -1),
157        fd_limiter_(fd_limiter),
158        filename_(std::move(filename)) {
159    if (!has_permanent_fd_) {
160      assert(fd_ == -1);
161      ::close(fd);  // The file will be opened on every read.
162    }
163  }
164
165  ~PosixRandomAccessFile() override {
166    if (has_permanent_fd_) {
167      assert(fd_ != -1);
168      ::close(fd_);
169      fd_limiter_->Release();
170    }
171  }
172
173  Status Read(uint64_t offset, size_t n, Slice* result,
174              char* scratch) const override {
175    int fd = fd_;
176    if (!has_permanent_fd_) {
177      fd = ::open(filename_.c_str(), O_RDONLY | kOpenBaseFlags);
178      if (fd < 0) {
179        return PosixError(filename_, errno);
180      }
181    }
182
183    assert(fd != -1);
184
185    Status status;
186    ssize_t read_size = ::pread(fd, scratch, n, static_cast<off_t>(offset));
187    *result = Slice(scratch, (read_size < 0) ? 0 : read_size);
188    if (read_size < 0) {
189      // An error: return a non-ok status.
190      status = PosixError(filename_, errno);
191    }
192    if (!has_permanent_fd_) {
193      // Close the temporary file descriptor opened earlier.
194      assert(fd != fd_);
195      ::close(fd);
196    }
197    return status;
198  }
199
200  virtual std::string GetName() const override { return filename_; }
201
202 private:
203  const bool has_permanent_fd_;  // If false, the file is opened on every read.
204  const int fd_;                 // -1 if has_permanent_fd_ is false.
205  Limiter* const fd_limiter_;
206  const std::string filename_;
207};
208
209// Implements random read access in a file using mmap().
210//
211// Instances of this class are thread-safe, as required by the RandomAccessFile
212// API. Instances are immutable and Read() only calls thread-safe library
213// functions.
214class PosixMmapReadableFile final : public RandomAccessFile {
215 public:
216  // mmap_base[0, length-1] points to the memory-mapped contents of the file. It
217  // must be the result of a successful call to mmap(). This instances takes
218  // over the ownership of the region.
219  //
220  // |mmap_limiter| must outlive this instance. The caller must have already
221  // acquired the right to use one mmap region, which will be released when this
222  // instance is destroyed.
223  PosixMmapReadableFile(std::string filename, char* mmap_base, size_t length,
224                        Limiter* mmap_limiter)
225      : mmap_base_(mmap_base),
226        length_(length),
227        mmap_limiter_(mmap_limiter),
228        filename_(std::move(filename)) {}
229
230  ~PosixMmapReadableFile() override {
231    ::munmap(static_cast<void*>(mmap_base_), length_);
232    mmap_limiter_->Release();
233  }
234
235  Status Read(uint64_t offset, size_t n, Slice* result,
236              char* scratch) const override {
237    if (offset + n > length_) {
238      *result = Slice();
239      return PosixError(filename_, EINVAL);
240    }
241
242    *result = Slice(mmap_base_ + offset, n);
243    return Status::OK();
244  }
245
246  virtual std::string GetName() const override { return filename_; }
247
248 private:
249  char* const mmap_base_;
250  const size_t length_;

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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