They act as a view or translation of an existing file system or storage device. Unlike traditional file systems that essentially work with data on mass storage, virtual filesystems don't actually store data themselves. Unmounting a FUSE-based file system with the fusermount commandįUSE is particularly useful for writing virtual file systems. If a user now issues read/write/stat requests for this newly mounted file system, the kernel forwards these IO-requests to the handler and then sends the handler's response back to the user. At the time the file system is mounted, the handler is registered with the kernel. The program is also used to mount the new file system. The main purpose of this program is to specify how the file system is to respond to read/write/stat requests. To implement a new file system, a handler program linked to the supplied libfuse library needs to be written. The handler program returns a response back to FUSE which is then redirected to the userspace program that originally made the request. FUSE then executes the registered handler program (./hello) and passes it the request (ls -l /tmp/fuse). Operation and usage A flow-chart diagram showing how FUSE works: Request from userspace to list files (ls -l /tmp/fuse) gets redirected by the Kernel through VFS to FUSE. On the other hand, libfuse and its many ports provide a portable high-level interface that may be implemented on a system without a "FUSE" facility. Īs the kernel-userspace protocol of FUSE is versioned and public, a programmer can choose to use a different piece of code in place of libfuse and still communicate with the kernel's FUSE facilities. A break in libfuse history is libfuse3, which includes some incompatible improvements in the interface and performance, compared to the older libfuse2 now under maintenance mode. The exception is the FUSE fork for macOS, OSXFUSE, which has too many differences for sharing a library. This is possible because the kernel FUSE reports its own "feature levels", or versions. The userspace side of FUSE, the libfuse library, generally followed the pace of Linux kernel development while maintaining "best effort" compatibility with BSD descendants. įUSE was merged into the mainstream Linux kernel tree in kernel version 2.6.14. An ISC-licensed re-implementation by Sylvestre Gallon was released in March 2013, and incorporated into OpenBSD in June 2013. It superseded Linux Userland Filesystem, and provided a translational interface using lufis in libfuse1.įUSE was originally released under the terms of the GNU General Public License and the GNU Lesser General Public License, later also reimplemented as part of the FreeBSD base system and released under the terms of Simplified BSD license. The FUSE system was originally part of AVFS ( A Virtual Filesystem), a filesystem implementation heavily influenced by the translator concept of the GNU Hurd. įUSE is free software originally released under the terms of the GNU General Public License and the GNU Lesser General Public License. This is achieved by running file system code in user space while the FUSE module provides only a bridge to the actual kernel interfaces.įUSE is available for Linux, FreeBSD, OpenBSD, NetBSD (as puffs), OpenSolaris, Minix 3, macOS, and Windows. Note that some of those modules can be used in standalone mode, independently of raylib library.GPL for Linux kernel part, LGPL for Libfuse, Simplified BSD on FreeBSD, ISC license on OpenBSD proprietary for macOSįilesystem in Userspace ( FUSE) is a software interface for Unix and Unix-like computer operating systems that lets non-privileged users create their own file systems without editing kernel code. Everything is contained within a small number of well defined, specific and self-contained modules, named accordingly to its primary functionality. Huge examples collection with +120 code examples!.VR stereo rendering support with configurable HMD device parameters.Audio loading and playing with streaming support (WAV, OGG, MP3, FLAC, XM, MOD).Powerful math module for Vector, Matrix and Quaternion operations: raymath.Shaders support, including Model shaders and Postprocessing shaders.Animated 3d models supported (skeletal bones animation).Flexible Materials system, supporting classic maps and PBR maps.Full 3d support for 3d Shapes, Models, Billboards, Heightmaps and more!.Multiple texture formats support, including compressed formats (DXT, ETC, ASTC).Powerful Fonts module (SpriteFonts, BMfonts, TTF, SDF).Written in plain C code (C99) using PascalCase/camelCase notation.Multiplatform: Windows, Linux, MacOS, RPI, Android, HTML5.NO external dependencies, all required libraries included with raylib.
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