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Improve error message when daemonizing failed

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PR #19959.
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Chocobo1 2023-11-21 14:05:32 +08:00 • committed by GitHub
parent 137df132e8
commit 6f7f418ec1
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4 changed files with 26 additions and 21 deletions
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30
src/app/main.cpp
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@ -73,6 +73,7 @@ Q_IMPORT_PLUGIN(QICOPlugin)
#endif // DISABLE_GUI
#include "base/global.h"
#include "base/logger.h"
#include "base/preferences.h"
#include "base/profile.h"
#include "base/version.h"
@ -125,7 +126,7 @@ int main(int argc, char *argv[])
#ifdef Q_OS_WIN
// QCoreApplication::applicationDirPath() needs an Application object instantiated first
// Let's hope that there won't be a crash before this line
const char *envName = "_NT_SYMBOL_PATH";
const char envName[] = "_NT_SYMBOL_PATH";
const QString envValue = qEnvironmentVariable(envName);
if (envValue.isEmpty())
qputenv(envName, Application::applicationDirPath().toLocal8Bit());
@ -185,13 +186,13 @@ int main(int argc, char *argv[])
setCurrentMigrationVersion();
}
// Check if qBittorrent is already running for this user
if (app->isRunning())
// Check if qBittorrent is already running
if (app->hasAnotherInstance())
{
#if defined(DISABLE_GUI) && !defined(Q_OS_WIN)
if (params.shouldDaemonize)
{
throw CommandLineParameterError(QCoreApplication::translate("Main", "You cannot use %1: qBittorrent is already running for this user.")
throw CommandLineParameterError(QCoreApplication::translate("Main", "You cannot use %1: qBittorrent is already running.")
.arg(u"-d (or --daemon)"_s));
}
#endif
@ -221,8 +222,7 @@ int main(int argc, char *argv[])
// Since Apple made difficult for users to set PATH, we set here for convenience.
// Users are supposed to install Homebrew Python for search function.
// For more info see issue #5571.
QByteArray path = "/usr/local/bin:";
path += qgetenv("PATH");
const QByteArray path = "/usr/local/bin:" + qgetenv("PATH");
qputenv("PATH", path.constData());
// On OS X the standard is to not show icons in the menus
@ -235,19 +235,27 @@ int main(int argc, char *argv[])
#if defined(DISABLE_GUI) && !defined(Q_OS_WIN)
if (params.shouldDaemonize)
{
app.reset(); // Destroy current application
if (daemon(1, 0) == 0)
app.reset(); // Destroy current application instance
if (::daemon(1, 0) == 0)
{
app = std::make_unique<Application>(argc, argv);
if (app->isRunning())
if (app->hasAnotherInstance())
{
// Another instance had time to start.
// It is undefined behavior to write to log file since there is another qbt instance
// in play. But we still do it since there is chance that the log message will survive.
const QString errorMessage = QCoreApplication::translate("Main", "Found unexpected qBittorrent instance. Exiting this instance. Current process ID: %1.")
.arg(QString::number(QCoreApplication::applicationPid()));
LogMsg(errorMessage, Log::CRITICAL);
// stdout, stderr is closed so we can't use them
return EXIT_FAILURE;
}
}
else
{
qCritical("Something went wrong while daemonizing, exiting...");
const QString errorMessage = QCoreApplication::translate("Main", "Error when daemonizing. Reason: \"%1\". Error code: %2.")
.arg(QString::fromLocal8Bit(strerror(errno)), QString::number(errno));
LogMsg(errorMessage, Log::CRITICAL);
qCritical("%s", qUtf8Printable(errorMessage));
return EXIT_FAILURE;
}
}