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GIO (software)

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Title: GIO (software)  
Author: World Heritage Encyclopedia
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Subject: GNOME Files, GTK+, GNOME Storage, The GNOME Project, Havoc Pennington
Collection: Applications Using D-Bus, C Libraries, Free Computer Libraries, Free Software Programmed in C, Gnome Libraries, Gtk+
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GIO (software)

Developer(s) The GNOME Project
Stable release 2.42.0 (September 22, 2014 (2014-09-22)) [1]
Written in C
Type system library
License GNU Lesser General Public License
Website //stable/
As the GNU C Library serves as a wrapper for Linux kernel system calls, so do the libraries bundled in GLib (GObject, Glib, GModule, GThread and GIO) serve as further wrappers for their specific tasks.
Simplified software architecture of GTK+. Pango, GDK, ATK, GIO, Cairo and GLib.

GIO is a library, designed to present programmers with a modern and usable interface to a virtual file system. It allows applications to access local and remote files with a single consistent API, which was designed "to overcome the shortcomings of GnomeVFS" and be "so good that developers prefer it over raw POSIX calls."[2]

GIO serves as low-level system library for the GNOME Shell/GNOME/GTK+ software stack and is being developed by the The GNOME Project. It maintained as a separate library, libgio-2.0, but it is bundled with GLib. GIO is free and open-source software subject to the requirements of the GNU Lesser General Public License.


  • Features 1
  • See also 2
  • References 3
  • External links 4


  • The abstract file system model of GIO consists of a number of interfaces and base classes for I/O and files.
  • There is a number of stream classes, similar to the input and output stream hierarchies that can be found in frameworks like Java.
  • There are interfaces related to applications and the types of files they handle.
  • There is a framework for storing and retrieving application settings.
  • There is support for network programming, including name resolution, lowlevel socket APIs and highlevel client and server helper classes.
  • There is support for connecting to D-Bus, sending and receiving messages, owning and watching bus names, and making objects available on the bus.

Beyond these, GIO provides facilities for file monitoring, asynchronous I/O and filename completion. In addition to the interfaces, GIO provides implementations for the local case. Implementations for various network file systems are provided by the GVFS package as loadable modules.

See also

  • KIO – the equivalent KDE library


  1. ^ glib releases, 
  2. ^ "GIO Reference Manual". 

External links

  • GIO Reference Manual
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