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Bug 724513 - Part 2 - nsAppRunner shouldn't assume the deletion of invalid startup cache file succeeded. r=mwu

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This commit is contained in:
Graeme McCutcheon 2012-10-23 17:46:51 +01:00
parent 2940f7ad4f
commit d7b84c28d7
1 changed files with 29 additions and 11 deletions
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40
toolkit/xre/nsAppRunner.cpp
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@ -91,11 +91,13 @@
#include "nsIWidget.h"
#include "nsIDocShell.h"
#include "nsAppShellCID.h"
#include "mozilla/scache/StartupCache.h"
#include "mozilla/unused.h"
using namespace mozilla;
using mozilla::unused;
using mozilla::scache::StartupCache;
#ifdef XP_WIN
#include "nsIWinAppHelper.h"
@ -2406,7 +2408,7 @@ static void BuildVersion(nsCString &aBuf)
static void
WriteVersion(nsIFile* aProfileDir, const nsCString& aVersion,
const nsCString& aOSABI, nsIFile* aXULRunnerDir,
nsIFile* aAppDir)
nsIFile* aAppDir, bool invalidateCache)
{
nsCOMPtr<nsIFile> file;
aProfileDir->Clone(getter_AddRefs(file));
@ -2449,19 +2451,30 @@ WriteVersion(nsIFile* aProfileDir, const nsCString& aVersion,
PR_Write(fd, appDir.get(), appDir.Length());
}
static const char kInvalidationHeader[] = "InvalidateCaches=1" NS_LINEBREAK;
if (invalidateCache)
PR_Write(fd, kInvalidationHeader, sizeof(kInvalidationHeader) - 1);
static const char kNL[] = NS_LINEBREAK;
PR_Write(fd, kNL, sizeof(kNL) - 1);
PR_Close(fd);
}
static void RemoveComponentRegistries(nsIFile* aProfileDir, nsIFile* aLocalProfileDir,
/**
* Returns true if the startup cache file was successfully removed.
* Returns false if file->Clone fails at any point (OOM) or if unable
* to remove the startup cache file. Note in particular the return value
* is unaffected by a failure to remove extensions.ini
*/
static bool
RemoveComponentRegistries(nsIFile* aProfileDir, nsIFile* aLocalProfileDir,
bool aRemoveEMFiles)
{
nsCOMPtr<nsIFile> file;
aProfileDir->Clone(getter_AddRefs(file));
if (!file)
return;
return false;
if (aRemoveEMFiles) {
file->SetNativeLeafName(NS_LITERAL_CSTRING("extensions.ini"));
@ -2470,7 +2483,7 @@ static void RemoveComponentRegistries(nsIFile* aProfileDir, nsIFile* aLocalProfi
aLocalProfileDir->Clone(getter_AddRefs(file));
if (!file)
return;
return false;
#if defined(XP_UNIX) || defined(XP_BEOS)
#define PLATFORM_FASL_SUFFIX ".mfasl"
@ -2485,7 +2498,8 @@ static void RemoveComponentRegistries(nsIFile* aProfileDir, nsIFile* aLocalProfi
file->Remove(false);
file->SetNativeLeafName(NS_LITERAL_CSTRING("startupCache"));
file->Remove(true);
nsresult rv = file->Remove(true);
return NS_SUCCEEDED(rv) || rv == NS_ERROR_FILE_TARGET_DOES_NOT_EXIST;
}
// To support application initiated restart via nsIAppStartup.quit, we
@ -3533,21 +3547,22 @@ XREMain::XRE_mainStartup(bool* aExitFlag)
// profile in different builds the component registry must be
// re-generated to prevent mysterious component loading failures.
//
bool startupCacheValid = true;
if (gSafeMode) {
RemoveComponentRegistries(mProfD, mProfLD, false);
startupCacheValid = RemoveComponentRegistries(mProfD, mProfLD, false);
WriteVersion(mProfD, NS_LITERAL_CSTRING("Safe Mode"), osABI,
mDirProvider.GetGREDir(), mAppData->directory);
mDirProvider.GetGREDir(), mAppData->directory, !startupCacheValid);
}
else if (versionOK) {
if (!cachesOK) {
// Remove caches, forcing component re-registration.
// The new list of additional components directories is derived from
// information in "extensions.ini".
RemoveComponentRegistries(mProfD, mProfLD, false);
startupCacheValid = RemoveComponentRegistries(mProfD, mProfLD, false);
// Rewrite compatibility.ini to remove the flag
WriteVersion(mProfD, version, osABI,
mDirProvider.GetGREDir(), mAppData->directory);
mDirProvider.GetGREDir(), mAppData->directory, !startupCacheValid);
}
// Nothing need be done for the normal startup case.
}
@ -3555,13 +3570,16 @@ XREMain::XRE_mainStartup(bool* aExitFlag)
// Remove caches, forcing component re-registration
// with the default set of components (this disables any potentially
// troublesome incompatible XPCOM components).
RemoveComponentRegistries(mProfD, mProfLD, true);
startupCacheValid = RemoveComponentRegistries(mProfD, mProfLD, true);
// Write out version
WriteVersion(mProfD, version, osABI,
mDirProvider.GetGREDir(), mAppData->directory);
mDirProvider.GetGREDir(), mAppData->directory, !startupCacheValid);
}
if (!startupCacheValid)
StartupCache::IgnoreDiskCache();
if (flagFile) {
flagFile->Remove(true);
}