From a032bec8c429a3bdebdb5d2efb2be9423181948d Mon Sep 17 00:00:00 2001
From: Marco Allegretti <mightymarco4@gmail.com>
Date: Fri, 13 Feb 2026 13:16:36 +0100
Subject: [PATCH] inputd: save profiles atomically

---
 src/input/inputdaemon.cpp | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/src/input/inputdaemon.cpp b/src/input/inputdaemon.cpp
index ca1b9e1..907e3b1 100644
--- a/src/input/inputdaemon.cpp
+++ b/src/input/inputdaemon.cpp
@@ -15,6 +15,7 @@
 #include <QJsonArray>
 #include <QJsonDocument>
 #include <QJsonObject>
+#include <QSaveFile>
 #include <QStandardPaths>
 
 #include <memory>
@@ -87,14 +88,6 @@ static QString gamepadTypeToString(SDL_GamepadType t)
         return QStringLiteral("unknown");
     }
 }
-
-static QVariantMap unwrapVariantMap(QVariant v)
-{
-    if (v.canConvert<QVariantMap>()) {
-        return v.toMap();
-    }
-    return {};
-}
 }
 
 QVariantMap InputDaemon::Profile::toVariantMap() const
@@ -273,7 +266,10 @@ void InputDaemon::loadProfiles()
 bool InputDaemon::saveProfiles() const
 {
     const QString path = profilesPath();
-    QDir().mkpath(QFileInfo(path).absolutePath());
+    const QString dirPath = QFileInfo(path).absolutePath();
+    if (!QDir().mkpath(dirPath)) {
+        return false;
+    }
 
     QJsonArray profiles;
     for (const Profile &p : m_profiles) {
@@ -289,13 +285,17 @@ bool InputDaemon::saveProfiles() const
     root.insert(QStringLiteral("profiles"), profiles);
     root.insert(QStringLiteral("assignments"), assignments);
 
-    QFile f(path);
+    QSaveFile f(path);
     if (!f.open(QIODevice::WriteOnly | QIODevice::Truncate)) {
         return false;
     }
 
-    f.write(QJsonDocument(root).toJson());
-    return true;
+    const QByteArray payload = QJsonDocument(root).toJson();
+    if (f.write(payload) != payload.size()) {
+        return false;
+    }
+
+    return f.commit();
 }
 
 InputDaemon::Profile InputDaemon::profileById(const QString &profileId) const