ca.desrt.dconf

1. 測試 gsettings 設定 org.gtk.Settings.FileChooser 的 window-size，回應 ca.desrt.dconf 沒有提供任何服務。

   [dywang@deyu ~]$ GSETTINGS_SCHEMA_DIR=/usr/lib64/firefox/bundled/share/glib-2.0/\
   schemas/ gsettings set org.gtk.Settings.FileChooser window-size "(800,600)"
   
   (process:31471): dconf-WARNING **: failed to commit changes to dconf: 
   GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: 
   The name ca.desrt.dconf was not provided by any .service files
   

2. 從 CentOS 7 (192.168.122.7) 複製 ca.desrt.dconf.service 服務設定檔到 bundled 相對的目錄，但因 firefox 預設還是到 /usr/share/dbus-1/services 目錄找服務設定檔，所以建立連結檔。

   [root@deyu modules]# mkdir -p /usr/lib64/firefox/bundled/share/dbus-1/services/
   [root@deyu modules]# scp -p 192.168.122.7:/usr/share/dbus-1/services/\
   ca.desrt.dconf.service /usr/lib64/firefox/bundled/share/dbus-1/services/
   ca.desrt.dconf.service                        100%   68     0.1KB/s   00:00    
   [root@deyu modules]# ln -s /usr/lib64/firefox/bundled/share/dbus-1/services/\
   ca.desrt.dconf.service /usr/share/dbus-1/services/ca.desrt.dconf.service
   

3. 從 CentOS 7 (192.168.122.7) 複製 ca.desrt.dconf.service 服務惷定的執行檔 dconf-service 到 bundled 相對的目錄。並修改 ca.desrt.dconf 設定。

   [root@deyu modules]# scp -p 192.168.122.7:/usr/libexec/dconf-service /usr/lib64/firefox/bundled/libexec/
   dconf-service                                 100%   83KB  83.0KB/s   00:00    
   [root@deyu modules]# vim /usr/share/dbus-1/services/ca.desrt.dconf.service
   [root@deyu modules]# cat /usr/share/dbus-1/services/ca.desrt.dconf.service
   [D-BUS Service]
   Name=ca.desrt.dconf
   Exec=/usr/lib64/firefox/bundled/libexec/dconf-service
   

4. 但執行 gsetting 設定時 dconf timeout。

   [dywang@deyu ~]$ GSETTINGS_SCHEMA_DIR=/usr/lib64/firefox/bundled/share/glib-2.0\
   /schemas/ gsettings set org.gtk.Settings.FileChooser window-size "(800,600)"
   (process:12623): dconf-WARNING **: failed to commit changes to dconf: Timeout was reached
   

5. 原因為 dconf-service 執行時取用 RHEL/CentOS 6 的 /usr/lib64 函式庫，必須將環境變數 LD_LIRARY_PATH 改為 /usr/lib64/firefox/bundled/lib64。將 ca.desrt.dconf 服務改執行腳本 dconf-service.sh。

   [root@deyu ~]# cat /usr/share/dbus-1/services/ca.desrt.dconf.service
   [D-BUS Service]
   Name=ca.desrt.dconf
   Exec=/usr/lib64/firefox/bundled/bin/dconf-service.sh
   

6. 建立 dconf-service.sh 腳本，執行 dconf-service 時環境變數 LD_LIRARY_PATH 設定為 /usr/lib64/firefox/bundled/lib64。將 ca.desrt.dconf 服務改執行腳本。

   [root@deyu ~]# vim /usr/lib64/firefox/bundled/bin/dconf-service.sh 
   [root@deyu ~]# cat /usr/lib64/firefox/bundled/bin/dconf-service.sh
   #!/bin/bash
   LD_LIBRARY_PATH=/usr/lib64/firefox/bundled/lib64/ /usr/lib64/firefox/bundled/libexec/dconf-service
   exit 0
   

7. dconf-service.sh 設定為可執行。

   [root@deyu ~]# chmod +x /usr/lib64/firefox/bundled/bin/dconf-service.sh
   

8. gsetting 設定正常。

   [dywang@deyu ~]$ GSETTINGS_SCHEMA_DIR=/usr/lib64/firefox/bundled/share/glib-2.0\
   /schemas/ gsettings set org.gtk.Settings.FileChooser window-size "(800,600)"
   [dywang@deyu ~]$ GSETTINGS_SCHEMA_DIR=/usr/lib64/firefox/bundled/share/glib-2.0\
   /schemas/ gsettings get org.gtk.Settings.FileChooser window-size
   (800, 600)
   [dywang@deyu ~]$ GSETTINGS_SCHEMA_DIR=/usr/lib64/firefox/bundled/share/glib-2.0\
   /schemas/ gsettings set org.gtk.Settings.FileChooser window-size "(700,600)"
   [dywang@deyu ~]$ GSETTINGS_SCHEMA_DIR=/usr/lib64/firefox/bundled/share/glib-2.0\
   /schemas/ gsettings get org.gtk.Settings.FileChooser window-size
   (700, 600)
   

9. 開啟 firefox，使用開檔功能時，設定選檔視窗後，在家目錄的 .config 目錄下會新增 dconf 目錄，並將設定存入目錄下的 user 設定檔。

   [dywang@deyu ~]$ ll .config/dconf/user 
   -rw-rw-r--. 1 dywang dywang 787 Dec 21 17:50 .config/dconf/user