feat: adjust systemd/user priority

XDG_DATA_DIRS下面的systemd优先级很高, 会影响系统systemd服务
将应用的systemd导出到其他地方, 再使用user-generator复制到优先级最低的generator.late目录

debian/linglong-bin.install

@@ -5,6 +5,7 @@ usr/bin/ll-cli
 usr/bin/llpkg
 usr/lib/linglong/*
 usr/lib/systemd/system-environment-generators/61-linglong
+usr/lib/systemd/user-generators/linglong-user-systemd-generator
 usr/lib/systemd/system/org.deepin.linglong.PackageManager.service lib/systemd/system/
 usr/lib/systemd/user/linglong-session-helper.service
 usr/lib/sysusers.d/linglong.conf

libs/linglong/src/linglong/repo/ostree_repo.h

@@ -154,10 +154,16 @@ class OSTreeRepo : public QObject
     [[nodiscard]] utils::error::Result<package::LayerDir>
     getMergedModuleDir(const api::types::v1::RepositoryCacheLayersItem &layer,
                        bool fallbackLayerDir = true) const noexcept;
-    utils::error::Result<void> exportEntries(
-      const QDir &entriesDir, const api::types::v1::RepositoryCacheLayersItem &item) noexcept;
+    utils::error::Result<void>
+    exportEntries(const std::filesystem::path &rootEntriesDir,
+                  const api::types::v1::RepositoryCacheLayersItem &item) noexcept;
     static utils::error::Result<void> IniLikeFileRewrite(const QFileInfo &info,
                                                          const QString &id) noexcept;
+
+    utils::error::Result<void> exportDir(const std::string &appID,
+                                         const std::filesystem::path &source,
+                                         const std::filesystem::path &destination,
+                                         const int &max_depth);
 };
 
 } // namespace linglong::repo

libs/utils/src/linglong/utils/error/error.h

@@ -20,6 +20,7 @@
 #include <QStringBuilder>
 
 #include <memory>
+#include <string>
 #include <utility>
 
 namespace linglong::utils::error {
@@ -38,11 +39,9 @@ class Error
 
     [[nodiscard]] auto message() const { return pImpl->message(); }
 
-    static auto Err(const char *file,
-                    int line,
-                    const QString &trace_msg,
-                    const QString &msg,
-                    int code = -1) -> Error
+    static auto
+    Err(const char *file, int line, const QString &trace_msg, const QString &msg, int code = -1)
+      -> Error
     {
         return Error(std::make_unique<details::ErrorImpl>(file,
                                                           line,
@@ -67,8 +66,8 @@ class Error
                                                nullptr));
     }
 
-    static auto
-    Err(const char *file, int line, const QString &trace_msg, const QFile &qfile) -> Error
+    static auto Err(const char *file, int line, const QString &trace_msg, const QFile &qfile)
+      -> Error
     {
         return Error(std::make_unique<details::ErrorImpl>(file,
                                                           line,
@@ -79,11 +78,9 @@ class Error
                                                           nullptr));
     }
 
-    static auto Err(const char *file,
-                    int line,
-                    const QString &trace_msg,
-                    std::exception_ptr err,
-                    int code = -1) -> Error
+    static auto
+    Err(const char *file, int line, const QString &trace_msg, std::exception_ptr err, int code = -1)
+      -> Error
     {
         QString what = trace_msg + ": ";
         try {
@@ -118,8 +115,8 @@ class Error
           std::make_unique<details::ErrorImpl>(file, line, "default", code, what, nullptr));
     }
 
-    static auto
-    Err(const char *file, int line, const QString &trace_msg, const std::exception &e) -> Error
+    static auto Err(const char *file, int line, const QString &trace_msg, const std::exception &e)
+      -> Error
     {
         return Error(std::make_unique<details::ErrorImpl>(file,
                                                           line,
@@ -156,6 +153,15 @@ class Error
         return Err(file, line, trace_msg, new_msg);
     }
 
+    static auto Err(const char *file,
+                    int line,
+                    const QString &trace_msg,
+                    const char *msg,
+                    const std::system_error &e) -> Error
+    {
+        return Err(file, line, trace_msg, msg, e, e.code().value());
+    }
+
     static auto Err(const char *file,
                     int line,
                     const QString &trace_msg,
@@ -165,6 +171,15 @@ class Error
         return Err(file, line, trace_msg, msg, e, e.code().value());
     }
 
+    static auto Err(const char *file,
+                    int line,
+                    const QString &trace_msg,
+                    const std::string &msg,
+                    const std::system_error &e) -> Error
+    {
+        return Err(file, line, trace_msg, msg.c_str(), e, e.code().value());
+    }
+
     template<typename Value>
     static auto Err(const char *file,
                     int line,
@@ -198,11 +213,9 @@ class Error
                                                           std::move(cause.error().pImpl)));
     }
 
-    static auto Err(const char *file,
-                    int line,
-                    const QString &trace_msg,
-                    const QString &msg,
-                    Error &&cause) -> Error
+    static auto
+    Err(const char *file, int line, const QString &trace_msg, const QString &msg, Error &&cause)
+      -> Error
     {
         return Error(std::make_unique<details::ErrorImpl>(file,
                                                           line,

misc/CMakeLists.txt

@@ -38,6 +38,7 @@ configure_files(
   lib/linglong/container/README.md
   lib/linglong/generate-xdg-data-dirs.sh
   lib/systemd/system-environment-generators/61-linglong
+  lib/systemd/user-generators/linglong-user-systemd-generator
   lib/systemd/system/org.deepin.linglong.PackageManager.service
   lib/systemd/system-preset/91-linglong.preset
   lib/systemd/user/linglong-session-helper.service
@@ -149,6 +150,11 @@ install(
     ${CMAKE_CURRENT_BINARY_DIR}/lib/systemd/system-environment-generators/61-linglong
   DESTINATION ${SYSTEMD_SYSTEM_GENERATOR_PATH})
 
+install(
+  PROGRAMS
+    ${CMAKE_CURRENT_BINARY_DIR}/lib/systemd/user-generators/linglong-user-systemd-generator
+  DESTINATION ${CMAKE_INSTALL_PREFIX}/lib/systemd/user-generators)
+
 # sysuser
 
 set(SYSTEMD_SYSUSERSDIR ${CMAKE_INSTALL_PREFIX}/lib/sysusers.d)

misc/lib/systemd/user-generators/linglong-user-systemd-generator

@@ -0,0 +1,9 @@
+#!/usr/bin/env sh
+
+# SPDX-FileCopyrightText: 2023 UnionTech Software Technology Co., Ltd.
+#
+# SPDX-License-Identifier: LGPL-3.0-or-later
+
+# https://www.freedesktop.org/software/systemd/man/latest/systemd.generator.html
+late="$3"
+cp -rs @LINGLONG_ROOT@/entries/lib/systemd/user/* "$late/"

rpm/linglong.spec

@@ -85,6 +85,7 @@ cd build
 %{_prefix}/lib/systemd/system-preset/*.preset
 %{_prefix}/lib/systemd/user/*
 %{_prefix}/lib/systemd/system-environment-generators/*
+%{_prefix}/lib/systemd/user-generators/*
 %{_libexecdir}/%{name}/ll-package-manager
 %{_libexecdir}/%{name}/ll-session-helper
 %{_libexecdir}/%{name}/ld-cache-generator