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-rw-r--r--storage/TelemetryVFS.cpp879
1 files changed, 0 insertions, 879 deletions
diff --git a/storage/TelemetryVFS.cpp b/storage/TelemetryVFS.cpp
deleted file mode 100644
index eb102a046..000000000
--- a/storage/TelemetryVFS.cpp
+++ /dev/null
@@ -1,879 +0,0 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
- * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
- * This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include <string.h>
-#include "mozilla/Telemetry.h"
-#include "mozilla/Preferences.h"
-#include "sqlite3.h"
-#include "nsThreadUtils.h"
-#include "mozilla/dom/quota/PersistenceType.h"
-#include "mozilla/dom/quota/QuotaManager.h"
-#include "mozilla/dom/quota/QuotaObject.h"
-#include "mozilla/IOInterposer.h"
-
-// The last VFS version for which this file has been updated.
-#define LAST_KNOWN_VFS_VERSION 3
-
-// The last io_methods version for which this file has been updated.
-#define LAST_KNOWN_IOMETHODS_VERSION 3
-
-/**
- * This preference is a workaround to allow users/sysadmins to identify
- * that the profile exists on an NFS share whose implementation
- * is incompatible with SQLite's default locking implementation.
- * Bug 433129 attempted to automatically identify such file-systems,
- * but a reliable way was not found and it was determined that the fallback
- * locking is slower than POSIX locking, so we do not want to do it by default.
-*/
-#define PREF_NFS_FILESYSTEM "storage.nfs_filesystem"
-
-namespace {
-
-using namespace mozilla;
-using namespace mozilla::dom::quota;
-
-struct Histograms {
- const char *name;
- const Telemetry::ID readB;
- const Telemetry::ID writeB;
- const Telemetry::ID readMS;
- const Telemetry::ID writeMS;
- const Telemetry::ID syncMS;
-};
-
-#define SQLITE_TELEMETRY(FILENAME, HGRAM) \
- { FILENAME, \
- Telemetry::MOZ_SQLITE_ ## HGRAM ## _READ_B, \
- Telemetry::MOZ_SQLITE_ ## HGRAM ## _WRITE_B, \
- Telemetry::MOZ_SQLITE_ ## HGRAM ## _READ_MS, \
- Telemetry::MOZ_SQLITE_ ## HGRAM ## _WRITE_MS, \
- Telemetry::MOZ_SQLITE_ ## HGRAM ## _SYNC_MS \
- }
-
-Histograms gHistograms[] = {
- SQLITE_TELEMETRY("places.sqlite", PLACES),
- SQLITE_TELEMETRY("cookies.sqlite", COOKIES),
- SQLITE_TELEMETRY("webappsstore.sqlite", WEBAPPS),
- SQLITE_TELEMETRY(nullptr, OTHER)
-};
-#undef SQLITE_TELEMETRY
-
-/** RAII class for measuring how long io takes on/off main thread
- */
-class IOThreadAutoTimer {
-public:
- /**
- * IOThreadAutoTimer measures time spent in IO. Additionally it
- * automatically determines whether IO is happening on the main
- * thread and picks an appropriate histogram.
- *
- * @param id takes a telemetry histogram id. The id+1 must be an
- * equivalent histogram for the main thread. Eg, MOZ_SQLITE_OPEN_MS
- * is followed by MOZ_SQLITE_OPEN_MAIN_THREAD_MS.
- *
- * @param aOp optionally takes an IO operation to report through the
- * IOInterposer. Filename will be reported as NULL, and reference will be
- * either "sqlite-mainthread" or "sqlite-otherthread".
- */
- explicit IOThreadAutoTimer(Telemetry::ID aId,
- IOInterposeObserver::Operation aOp = IOInterposeObserver::OpNone)
- : start(TimeStamp::Now()),
- id(aId),
- op(aOp)
- {
- }
-
- /**
- * This constructor is for when we want to report an operation to
- * IOInterposer but do not require a telemetry probe.
- *
- * @param aOp IO Operation to report through the IOInterposer.
- */
- explicit IOThreadAutoTimer(IOInterposeObserver::Operation aOp)
- : start(TimeStamp::Now()),
- id(Telemetry::HistogramCount),
- op(aOp)
- {
- }
-
- ~IOThreadAutoTimer()
- {
- // We don't report SQLite I/O on Windows because we have a comprehensive
- // mechanism for intercepting I/O on that platform that captures a superset
- // of the data captured here.
- }
-
-private:
- const TimeStamp start;
- const Telemetry::ID id;
- IOInterposeObserver::Operation op;
-};
-
-struct telemetry_file {
- // Base class. Must be first
- sqlite3_file base;
-
- // histograms pertaining to this file
- Histograms *histograms;
-
- // quota object for this file
- RefPtr<QuotaObject> quotaObject;
-
- // The chunk size for this file. See the documentation for
- // sqlite3_file_control() and FCNTL_CHUNK_SIZE.
- int fileChunkSize;
-
- // This contains the vfs that actually does work
- sqlite3_file pReal[1];
-};
-
-const char*
-DatabasePathFromWALPath(const char *zWALName)
-{
- /**
- * Do some sketchy pointer arithmetic to find the parameter key. The WAL
- * filename is in the middle of a big allocated block that contains:
- *
- * - Random Values
- * - Main Database Path
- * - \0
- * - Multiple URI components consisting of:
- * - Key
- * - \0
- * - Value
- * - \0
- * - \0
- * - Journal Path
- * - \0
- * - WAL Path (zWALName)
- * - \0
- *
- * Because the main database path is preceded by a random value we have to be
- * careful when trying to figure out when we should terminate this loop.
- */
- MOZ_ASSERT(zWALName);
-
- nsDependentCSubstring dbPath(zWALName, strlen(zWALName));
-
- // Chop off the "-wal" suffix.
- NS_NAMED_LITERAL_CSTRING(kWALSuffix, "-wal");
- MOZ_ASSERT(StringEndsWith(dbPath, kWALSuffix));
-
- dbPath.Rebind(zWALName, dbPath.Length() - kWALSuffix.Length());
- MOZ_ASSERT(!dbPath.IsEmpty());
-
- // We want to scan to the end of the key/value URI pairs. Skip the preceding
- // null and go to the last char of the journal path.
- const char* cursor = zWALName - 2;
-
- // Make sure we just skipped a null.
- MOZ_ASSERT(!*(cursor + 1));
-
- // Walk backwards over the journal path.
- while (*cursor) {
- cursor--;
- }
-
- // There should be another null here.
- cursor--;
- MOZ_ASSERT(!*cursor);
-
- // Back up one more char to the last char of the previous string. It may be
- // the database path or it may be a key/value URI pair.
- cursor--;
-
-#ifdef DEBUG
- {
- // Verify that we just walked over the journal path. Account for the two
- // nulls we just skipped.
- const char *journalStart = cursor + 3;
-
- nsDependentCSubstring journalPath(journalStart,
- strlen(journalStart));
-
- // Chop off the "-journal" suffix.
- NS_NAMED_LITERAL_CSTRING(kJournalSuffix, "-journal");
- MOZ_ASSERT(StringEndsWith(journalPath, kJournalSuffix));
-
- journalPath.Rebind(journalStart,
- journalPath.Length() - kJournalSuffix.Length());
- MOZ_ASSERT(!journalPath.IsEmpty());
-
- // Make sure that the database name is a substring of the journal name.
- MOZ_ASSERT(journalPath == dbPath);
- }
-#endif
-
- // Now we're either at the end of the key/value URI pairs or we're at the
- // end of the database path. Carefully walk backwards one character at a
- // time to do this safely without running past the beginning of the database
- // path.
- const char *const dbPathStart = dbPath.BeginReading();
- const char *dbPathCursor = dbPath.EndReading() - 1;
- bool isDBPath = true;
-
- while (true) {
- MOZ_ASSERT(*dbPathCursor, "dbPathCursor should never see a null char!");
-
- if (isDBPath) {
- isDBPath = dbPathStart <= dbPathCursor &&
- *dbPathCursor == *cursor &&
- *cursor;
- }
-
- if (!isDBPath) {
- // This isn't the database path so it must be a value. Scan past it and
- // the key also.
- for (size_t stringCount = 0; stringCount < 2; stringCount++) {
- // Scan past the string to the preceding null character.
- while (*cursor) {
- cursor--;
- }
-
- // Back up one more char to the last char of preceding string.
- cursor--;
- }
-
- // Reset and start again.
- dbPathCursor = dbPath.EndReading() - 1;
- isDBPath = true;
-
- continue;
- }
-
- MOZ_ASSERT(isDBPath);
- MOZ_ASSERT(*cursor);
-
- if (dbPathStart == dbPathCursor) {
- // Found the full database path, we're all done.
- MOZ_ASSERT(nsDependentCString(cursor) == dbPath);
- return cursor;
- }
-
- // Change the cursors and go through the loop again.
- cursor--;
- dbPathCursor--;
- }
-
- MOZ_CRASH("Should never get here!");
-}
-
-already_AddRefed<QuotaObject>
-GetQuotaObjectFromNameAndParameters(const char *zName,
- const char *zURIParameterKey)
-{
- MOZ_ASSERT(zName);
- MOZ_ASSERT(zURIParameterKey);
-
- const char *persistenceType =
- sqlite3_uri_parameter(zURIParameterKey, "persistenceType");
- if (!persistenceType) {
- return nullptr;
- }
-
- const char *group = sqlite3_uri_parameter(zURIParameterKey, "group");
- if (!group) {
- NS_WARNING("SQLite URI had 'persistenceType' but not 'group'?!");
- return nullptr;
- }
-
- const char *origin = sqlite3_uri_parameter(zURIParameterKey, "origin");
- if (!origin) {
- NS_WARNING("SQLite URI had 'persistenceType' and 'group' but not "
- "'origin'?!");
- return nullptr;
- }
-
- QuotaManager *quotaManager = QuotaManager::Get();
- MOZ_ASSERT(quotaManager);
-
- return quotaManager->GetQuotaObject(
- PersistenceTypeFromText(nsDependentCString(persistenceType)),
- nsDependentCString(group),
- nsDependentCString(origin),
- NS_ConvertUTF8toUTF16(zName));
-}
-
-void
-MaybeEstablishQuotaControl(const char *zName,
- telemetry_file *pFile,
- int flags)
-{
- MOZ_ASSERT(pFile);
- MOZ_ASSERT(!pFile->quotaObject);
-
- if (!(flags & (SQLITE_OPEN_URI | SQLITE_OPEN_WAL))) {
- return;
- }
-
- MOZ_ASSERT(zName);
-
- const char *zURIParameterKey = (flags & SQLITE_OPEN_WAL) ?
- DatabasePathFromWALPath(zName) :
- zName;
-
- MOZ_ASSERT(zURIParameterKey);
-
- pFile->quotaObject =
- GetQuotaObjectFromNameAndParameters(zName, zURIParameterKey);
-}
-
-/*
-** Close a telemetry_file.
-*/
-int
-xClose(sqlite3_file *pFile)
-{
- telemetry_file *p = (telemetry_file *)pFile;
- int rc;
- { // Scope for IOThreadAutoTimer
- IOThreadAutoTimer ioTimer(IOInterposeObserver::OpClose);
- rc = p->pReal->pMethods->xClose(p->pReal);
- }
- if( rc==SQLITE_OK ){
- delete p->base.pMethods;
- p->base.pMethods = nullptr;
- p->quotaObject = nullptr;
-#ifdef DEBUG
- p->fileChunkSize = 0;
-#endif
- }
- return rc;
-}
-
-/*
-** Read data from a telemetry_file.
-*/
-int
-xRead(sqlite3_file *pFile, void *zBuf, int iAmt, sqlite_int64 iOfst)
-{
- telemetry_file *p = (telemetry_file *)pFile;
- IOThreadAutoTimer ioTimer(p->histograms->readMS, IOInterposeObserver::OpRead);
- int rc;
- rc = p->pReal->pMethods->xRead(p->pReal, zBuf, iAmt, iOfst);
- // sqlite likes to read from empty files, this is normal, ignore it.
- return rc;
-}
-
-/*
-** Return the current file-size of a telemetry_file.
-*/
-int
-xFileSize(sqlite3_file *pFile, sqlite_int64 *pSize)
-{
- IOThreadAutoTimer ioTimer(IOInterposeObserver::OpStat);
- telemetry_file *p = (telemetry_file *)pFile;
- int rc;
- rc = p->pReal->pMethods->xFileSize(p->pReal, pSize);
- return rc;
-}
-
-/*
-** Write data to a telemetry_file.
-*/
-int
-xWrite(sqlite3_file *pFile, const void *zBuf, int iAmt, sqlite_int64 iOfst)
-{
- telemetry_file *p = (telemetry_file *)pFile;
- IOThreadAutoTimer ioTimer(p->histograms->writeMS, IOInterposeObserver::OpWrite);
- int rc;
- if (p->quotaObject) {
- MOZ_ASSERT(INT64_MAX - iOfst >= iAmt);
- if (!p->quotaObject->MaybeUpdateSize(iOfst + iAmt, /* aTruncate */ false)) {
- return SQLITE_FULL;
- }
- }
- rc = p->pReal->pMethods->xWrite(p->pReal, zBuf, iAmt, iOfst);
- if (p->quotaObject && rc != SQLITE_OK) {
- NS_WARNING("xWrite failed on a quota-controlled file, attempting to "
- "update its current size...");
- sqlite_int64 currentSize;
- if (xFileSize(pFile, &currentSize) == SQLITE_OK) {
- p->quotaObject->MaybeUpdateSize(currentSize, /* aTruncate */ true);
- }
- }
- return rc;
-}
-
-/*
-** Truncate a telemetry_file.
-*/
-int
-xTruncate(sqlite3_file *pFile, sqlite_int64 size)
-{
- IOThreadAutoTimer ioTimer(Telemetry::MOZ_SQLITE_TRUNCATE_MS);
- telemetry_file *p = (telemetry_file *)pFile;
- int rc;
- if (p->quotaObject) {
- if (p->fileChunkSize > 0) {
- // Round up to the smallest multiple of the chunk size that will hold all
- // the data.
- size =
- ((size + p->fileChunkSize - 1) / p->fileChunkSize) * p->fileChunkSize;
- }
- if (!p->quotaObject->MaybeUpdateSize(size, /* aTruncate */ true)) {
- return SQLITE_FULL;
- }
- }
- rc = p->pReal->pMethods->xTruncate(p->pReal, size);
- if (p->quotaObject) {
- if (rc == SQLITE_OK) {
-#ifdef DEBUG
- // Make sure xTruncate set the size exactly as we calculated above.
- sqlite_int64 newSize;
- MOZ_ASSERT(xFileSize(pFile, &newSize) == SQLITE_OK);
- MOZ_ASSERT(newSize == size);
-#endif
- } else {
- NS_WARNING("xTruncate failed on a quota-controlled file, attempting to "
- "update its current size...");
- if (xFileSize(pFile, &size) == SQLITE_OK) {
- p->quotaObject->MaybeUpdateSize(size, /* aTruncate */ true);
- }
- }
- }
- return rc;
-}
-
-/*
-** Sync a telemetry_file.
-*/
-int
-xSync(sqlite3_file *pFile, int flags)
-{
- telemetry_file *p = (telemetry_file *)pFile;
- IOThreadAutoTimer ioTimer(p->histograms->syncMS, IOInterposeObserver::OpFSync);
- return p->pReal->pMethods->xSync(p->pReal, flags);
-}
-
-/*
-** Lock a telemetry_file.
-*/
-int
-xLock(sqlite3_file *pFile, int eLock)
-{
- telemetry_file *p = (telemetry_file *)pFile;
- int rc;
- rc = p->pReal->pMethods->xLock(p->pReal, eLock);
- return rc;
-}
-
-/*
-** Unlock a telemetry_file.
-*/
-int
-xUnlock(sqlite3_file *pFile, int eLock)
-{
- telemetry_file *p = (telemetry_file *)pFile;
- int rc;
- rc = p->pReal->pMethods->xUnlock(p->pReal, eLock);
- return rc;
-}
-
-/*
-** Check if another file-handle holds a RESERVED lock on a telemetry_file.
-*/
-int
-xCheckReservedLock(sqlite3_file *pFile, int *pResOut)
-{
- telemetry_file *p = (telemetry_file *)pFile;
- int rc = p->pReal->pMethods->xCheckReservedLock(p->pReal, pResOut);
- return rc;
-}
-
-/*
-** File control method. For custom operations on a telemetry_file.
-*/
-int
-xFileControl(sqlite3_file *pFile, int op, void *pArg)
-{
- telemetry_file *p = (telemetry_file *)pFile;
- int rc;
- // Hook SQLITE_FCNTL_SIZE_HINT for quota-controlled files and do the necessary
- // work before passing to the SQLite VFS.
- if (op == SQLITE_FCNTL_SIZE_HINT && p->quotaObject) {
- sqlite3_int64 hintSize = *static_cast<sqlite3_int64*>(pArg);
- sqlite3_int64 currentSize;
- rc = xFileSize(pFile, &currentSize);
- if (rc != SQLITE_OK) {
- return rc;
- }
- if (hintSize > currentSize) {
- rc = xTruncate(pFile, hintSize);
- if (rc != SQLITE_OK) {
- return rc;
- }
- }
- }
- rc = p->pReal->pMethods->xFileControl(p->pReal, op, pArg);
- // Grab the file chunk size after the SQLite VFS has approved.
- if (op == SQLITE_FCNTL_CHUNK_SIZE && rc == SQLITE_OK) {
- p->fileChunkSize = *static_cast<int*>(pArg);
- }
-#ifdef DEBUG
- if (op == SQLITE_FCNTL_SIZE_HINT && p->quotaObject && rc == SQLITE_OK) {
- sqlite3_int64 hintSize = *static_cast<sqlite3_int64*>(pArg);
- if (p->fileChunkSize > 0) {
- hintSize =
- ((hintSize + p->fileChunkSize - 1) / p->fileChunkSize) *
- p->fileChunkSize;
- }
- sqlite3_int64 currentSize;
- MOZ_ASSERT(xFileSize(pFile, &currentSize) == SQLITE_OK);
- MOZ_ASSERT(currentSize >= hintSize);
- }
-#endif
- return rc;
-}
-
-/*
-** Return the sector-size in bytes for a telemetry_file.
-*/
-int
-xSectorSize(sqlite3_file *pFile)
-{
- telemetry_file *p = (telemetry_file *)pFile;
- int rc;
- rc = p->pReal->pMethods->xSectorSize(p->pReal);
- return rc;
-}
-
-/*
-** Return the device characteristic flags supported by a telemetry_file.
-*/
-int
-xDeviceCharacteristics(sqlite3_file *pFile)
-{
- telemetry_file *p = (telemetry_file *)pFile;
- int rc;
- rc = p->pReal->pMethods->xDeviceCharacteristics(p->pReal);
- return rc;
-}
-
-/*
-** Shared-memory operations.
-*/
-int
-xShmLock(sqlite3_file *pFile, int ofst, int n, int flags)
-{
- telemetry_file *p = (telemetry_file *)pFile;
- return p->pReal->pMethods->xShmLock(p->pReal, ofst, n, flags);
-}
-
-int
-xShmMap(sqlite3_file *pFile, int iRegion, int szRegion, int isWrite, void volatile **pp)
-{
- telemetry_file *p = (telemetry_file *)pFile;
- int rc;
- rc = p->pReal->pMethods->xShmMap(p->pReal, iRegion, szRegion, isWrite, pp);
- return rc;
-}
-
-void
-xShmBarrier(sqlite3_file *pFile){
- telemetry_file *p = (telemetry_file *)pFile;
- p->pReal->pMethods->xShmBarrier(p->pReal);
-}
-
-int
-xShmUnmap(sqlite3_file *pFile, int delFlag){
- telemetry_file *p = (telemetry_file *)pFile;
- int rc;
- rc = p->pReal->pMethods->xShmUnmap(p->pReal, delFlag);
- return rc;
-}
-
-int
-xFetch(sqlite3_file *pFile, sqlite3_int64 iOff, int iAmt, void **pp)
-{
- telemetry_file *p = (telemetry_file *)pFile;
- MOZ_ASSERT(p->pReal->pMethods->iVersion >= 3);
- return p->pReal->pMethods->xFetch(p->pReal, iOff, iAmt, pp);
-}
-
-int
-xUnfetch(sqlite3_file *pFile, sqlite3_int64 iOff, void *pResOut)
-{
- telemetry_file *p = (telemetry_file *)pFile;
- MOZ_ASSERT(p->pReal->pMethods->iVersion >= 3);
- return p->pReal->pMethods->xUnfetch(p->pReal, iOff, pResOut);
-}
-
-int
-xOpen(sqlite3_vfs* vfs, const char *zName, sqlite3_file* pFile,
- int flags, int *pOutFlags)
-{
- IOThreadAutoTimer ioTimer(Telemetry::MOZ_SQLITE_OPEN_MS,
- IOInterposeObserver::OpCreateOrOpen);
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- int rc;
- telemetry_file *p = (telemetry_file *)pFile;
- Histograms *h = nullptr;
- // check if the filename is one we are probing for
- for(size_t i = 0;i < sizeof(gHistograms)/sizeof(gHistograms[0]);i++) {
- h = &gHistograms[i];
- // last probe is the fallback probe
- if (!h->name)
- break;
- if (!zName)
- continue;
- const char *match = strstr(zName, h->name);
- if (!match)
- continue;
- char c = match[strlen(h->name)];
- // include -wal/-journal too
- if (!c || c == '-')
- break;
- }
- p->histograms = h;
-
- MaybeEstablishQuotaControl(zName, p, flags);
-
- rc = orig_vfs->xOpen(orig_vfs, zName, p->pReal, flags, pOutFlags);
- if( rc != SQLITE_OK )
- return rc;
- if( p->pReal->pMethods ){
- sqlite3_io_methods *pNew = new sqlite3_io_methods;
- const sqlite3_io_methods *pSub = p->pReal->pMethods;
- memset(pNew, 0, sizeof(*pNew));
- // If the io_methods version is higher than the last known one, you should
- // update this VFS adding appropriate IO methods for any methods added in
- // the version change.
- pNew->iVersion = pSub->iVersion;
- MOZ_ASSERT(pNew->iVersion <= LAST_KNOWN_IOMETHODS_VERSION);
- pNew->xClose = xClose;
- pNew->xRead = xRead;
- pNew->xWrite = xWrite;
- pNew->xTruncate = xTruncate;
- pNew->xSync = xSync;
- pNew->xFileSize = xFileSize;
- pNew->xLock = xLock;
- pNew->xUnlock = xUnlock;
- pNew->xCheckReservedLock = xCheckReservedLock;
- pNew->xFileControl = xFileControl;
- pNew->xSectorSize = xSectorSize;
- pNew->xDeviceCharacteristics = xDeviceCharacteristics;
- if (pNew->iVersion >= 2) {
- // Methods added in version 2.
- pNew->xShmMap = pSub->xShmMap ? xShmMap : 0;
- pNew->xShmLock = pSub->xShmLock ? xShmLock : 0;
- pNew->xShmBarrier = pSub->xShmBarrier ? xShmBarrier : 0;
- pNew->xShmUnmap = pSub->xShmUnmap ? xShmUnmap : 0;
- }
- if (pNew->iVersion >= 3) {
- // Methods added in version 3.
- // SQLite 3.7.17 calls these methods without checking for nullptr first,
- // so we always define them. Verify that we're not going to call
- // nullptrs, though.
- MOZ_ASSERT(pSub->xFetch);
- pNew->xFetch = xFetch;
- MOZ_ASSERT(pSub->xUnfetch);
- pNew->xUnfetch = xUnfetch;
- }
- pFile->pMethods = pNew;
- }
- return rc;
-}
-
-int
-xDelete(sqlite3_vfs* vfs, const char *zName, int syncDir)
-{
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- int rc;
- RefPtr<QuotaObject> quotaObject;
-
- if (StringEndsWith(nsDependentCString(zName), NS_LITERAL_CSTRING("-wal"))) {
- const char *zURIParameterKey = DatabasePathFromWALPath(zName);
- MOZ_ASSERT(zURIParameterKey);
-
- quotaObject = GetQuotaObjectFromNameAndParameters(zName, zURIParameterKey);
- }
-
- rc = orig_vfs->xDelete(orig_vfs, zName, syncDir);
- if (rc == SQLITE_OK && quotaObject) {
- MOZ_ALWAYS_TRUE(quotaObject->MaybeUpdateSize(0, /* aTruncate */ true));
- }
-
- return rc;
-}
-
-int
-xAccess(sqlite3_vfs *vfs, const char *zName, int flags, int *pResOut)
-{
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- return orig_vfs->xAccess(orig_vfs, zName, flags, pResOut);
-}
-
-int
-xFullPathname(sqlite3_vfs *vfs, const char *zName, int nOut, char *zOut)
-{
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- return orig_vfs->xFullPathname(orig_vfs, zName, nOut, zOut);
-}
-
-void*
-xDlOpen(sqlite3_vfs *vfs, const char *zFilename)
-{
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- return orig_vfs->xDlOpen(orig_vfs, zFilename);
-}
-
-void
-xDlError(sqlite3_vfs *vfs, int nByte, char *zErrMsg)
-{
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- orig_vfs->xDlError(orig_vfs, nByte, zErrMsg);
-}
-
-void
-(*xDlSym(sqlite3_vfs *vfs, void *pHdle, const char *zSym))(void){
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- return orig_vfs->xDlSym(orig_vfs, pHdle, zSym);
-}
-
-void
-xDlClose(sqlite3_vfs *vfs, void *pHandle)
-{
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- orig_vfs->xDlClose(orig_vfs, pHandle);
-}
-
-int
-xRandomness(sqlite3_vfs *vfs, int nByte, char *zOut)
-{
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- return orig_vfs->xRandomness(orig_vfs, nByte, zOut);
-}
-
-int
-xSleep(sqlite3_vfs *vfs, int microseconds)
-{
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- return orig_vfs->xSleep(orig_vfs, microseconds);
-}
-
-int
-xCurrentTime(sqlite3_vfs *vfs, double *prNow)
-{
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- return orig_vfs->xCurrentTime(orig_vfs, prNow);
-}
-
-int
-xGetLastError(sqlite3_vfs *vfs, int nBuf, char *zBuf)
-{
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- return orig_vfs->xGetLastError(orig_vfs, nBuf, zBuf);
-}
-
-int
-xCurrentTimeInt64(sqlite3_vfs *vfs, sqlite3_int64 *piNow)
-{
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- return orig_vfs->xCurrentTimeInt64(orig_vfs, piNow);
-}
-
-static
-int
-xSetSystemCall(sqlite3_vfs *vfs, const char *zName, sqlite3_syscall_ptr pFunc)
-{
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- return orig_vfs->xSetSystemCall(orig_vfs, zName, pFunc);
-}
-
-static
-sqlite3_syscall_ptr
-xGetSystemCall(sqlite3_vfs *vfs, const char *zName)
-{
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- return orig_vfs->xGetSystemCall(orig_vfs, zName);
-}
-
-static
-const char *
-xNextSystemCall(sqlite3_vfs *vfs, const char *zName)
-{
- sqlite3_vfs *orig_vfs = static_cast<sqlite3_vfs*>(vfs->pAppData);
- return orig_vfs->xNextSystemCall(orig_vfs, zName);
-}
-
-} // namespace
-
-namespace mozilla {
-namespace storage {
-
-sqlite3_vfs* ConstructTelemetryVFS()
-{
-#if defined(XP_WIN)
-#define EXPECTED_VFS "win32"
-#define EXPECTED_VFS_NFS "win32"
-#else
-#define EXPECTED_VFS "unix"
-#define EXPECTED_VFS_NFS "unix-excl"
-#endif
-
- bool expected_vfs;
- sqlite3_vfs *vfs;
- if (Preferences::GetBool(PREF_NFS_FILESYSTEM)) {
- vfs = sqlite3_vfs_find(EXPECTED_VFS_NFS);
- expected_vfs = (vfs != nullptr);
- }
- else {
- vfs = sqlite3_vfs_find(nullptr);
- expected_vfs = vfs->zName && !strcmp(vfs->zName, EXPECTED_VFS);
- }
- if (!expected_vfs) {
- return nullptr;
- }
-
- sqlite3_vfs *tvfs = new ::sqlite3_vfs;
- memset(tvfs, 0, sizeof(::sqlite3_vfs));
- // If the VFS version is higher than the last known one, you should update
- // this VFS adding appropriate methods for any methods added in the version
- // change.
- tvfs->iVersion = vfs->iVersion;
- MOZ_ASSERT(vfs->iVersion <= LAST_KNOWN_VFS_VERSION);
- tvfs->szOsFile = sizeof(telemetry_file) - sizeof(sqlite3_file) + vfs->szOsFile;
- tvfs->mxPathname = vfs->mxPathname;
- tvfs->zName = "telemetry-vfs";
- tvfs->pAppData = vfs;
- tvfs->xOpen = xOpen;
- tvfs->xDelete = xDelete;
- tvfs->xAccess = xAccess;
- tvfs->xFullPathname = xFullPathname;
- tvfs->xDlOpen = xDlOpen;
- tvfs->xDlError = xDlError;
- tvfs->xDlSym = xDlSym;
- tvfs->xDlClose = xDlClose;
- tvfs->xRandomness = xRandomness;
- tvfs->xSleep = xSleep;
- tvfs->xCurrentTime = xCurrentTime;
- tvfs->xGetLastError = xGetLastError;
- if (tvfs->iVersion >= 2) {
- // Methods added in version 2.
- tvfs->xCurrentTimeInt64 = xCurrentTimeInt64;
- }
- if (tvfs->iVersion >= 3) {
- // Methods added in version 3.
- tvfs->xSetSystemCall = xSetSystemCall;
- tvfs->xGetSystemCall = xGetSystemCall;
- tvfs->xNextSystemCall = xNextSystemCall;
- }
- return tvfs;
-}
-
-already_AddRefed<QuotaObject>
-GetQuotaObjectForFile(sqlite3_file *pFile)
-{
- MOZ_ASSERT(pFile);
-
- telemetry_file *p = (telemetry_file *)pFile;
- RefPtr<QuotaObject> result = p->quotaObject;
- return result.forget();
-}
-
-} // namespace storage
-} // namespace mozilla
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 07:29:25 +0000