Section 7: overview, conventions, and miscellany
environ – user environment Synopsis extern char **environ; Description The variable environ points to an array of pointers to strings called the "environment". The last pointer in this array has the value NULL. (This variable must be declared in the user program, but is declared in the header file <unistd.h> if the _GNU_SOURCE feature test…
elektra – A framework to store configuration atoms hierarchically Library Linkage Architecture.PP The Elektra library (libelektra.so) has 2 layers: public methods and backend access, according to the following architecture (these pictures were taken from the Elektra presentation[1]): When using local backends such as the filesys backend, all key access happens in the actual process space…
efadv – Direct verbs for efa devices This provides low level access to efa devices to perform direct operations, without general branching performed by libibverbs. Description The libibverbs API is an abstract one. It is agnostic to any underlying provider specific implementation. While this abstraction has the advantage of user applications portability, it has a…
edb-sqlite – eurephia SQLite3 database driver Description The edb-sqlite database driver is used to enable SQLite3 database in eurephia. The SQLite3 database is file based and requires no server setup at all. The database driver takes only one argument, which is a full path to the database file.b Examples eurephia-auth – This is configured via…
eCryptfs – an enterprise-class cryptographic filesystem for linux Synopsis mount -t ecryptfs [SRC DIR] [DST DIR] -o [OPTIONS] Description eCryptfs is a POSIX-compliant enterprise-class stacked cryptographic filesystem for Linux. It is derived from Erez Zadok’s Cryptfs, implemented through the FiST framework for generating stacked filesystems. eCryptfs extends Cryptfs to provide advanced key management and policy…
ecm – Extra CMake Modules Introduction The Extra CMake Modules package, or ECM, adds to the modules provided by CMake, including ones used by find_package() to find common software, ones that can be used directly in CMakeLists.txt files to perform common tasks and toolchain files that must be specified on the commandline by the user….
ecm-toolchains – ECM Toolchains Reference Introduction Extra CMake Modules (ECM) provides some toolchain modules. Unlike normal modules, these are not included directly in projects, but specified with the CMAKE_TOOLCHAIN_FILE cache variable on the commandline. All Modules AndroidToolchain Enable easy compilation of cmake projects on Android. By using this android toolchain, the projects will be set…
ecm-modules – ECM Modules Reference Introduction Extra CMake Modules (ECM) provides various modules that provide useful functions for CMake scripts. ECM actually provides three types of modules that can be used from CMake scripts: those that extend the functionality of the find_package command are documented in ecm-find-modules(7); those that provide standard settings for software produced…
ecm-kde-modules – ECM KDE Modules Reference Introduction Extra CMake Modules (ECM) provides several modules that provide default settings (like installation directories, compiler flags and other CMake options) aimed at software produced by the KDE modules; these are documented here. ECM also provides modules with more general functionality, documented in ecm-modules(7), and ones that extend the…
ecm-find-modules – ECM Find Modules Reference Introduction Find modules are used by the CMake find_package command to search for packages that do not provide their own CMake package config files. CMake provides an extensive set of find modules, and Extra CMake Modules (ECM) adds to that. To use ECM’s find modules, you need to tell…
ecm-developer – ECM Developer Reference Writing Modules The CMake 3 documentation (and cmake-developer(7) in particular) has a lot of useful information about writing CMake modules, including a large section devoted to find modules. This guide will only highlight things that are particular to the Extra CMake Modules project. Most of these are stylistic points. For…
e2tools – utilities to manipulate files in an ext2/ext3 filesystem Description E2tools is a simple set of GPL’ed utilities to read, write, and manipulate files in an ext2/ext3 filesystem. These utilities access a filesystem directly using the ext2fs library. I wrote these tools in order to copy files into a linux filesystem on a machine…
drv – cups driver interface for ppd compiler files Synopsis drv list drv cat drv:///filename.drv/pcfilename Description drv lists and compiles PPDC source files installed in the /usr/share/cups/drv and (on Mac OS X) /Library/Printers/PPDs/Contents/Resources directories on behalf of the scheduler, cupsd(8). The first form of the command lists all of the PPD files that can be…
drm – Direct Rendering Manager Synopsis #include <xf86drm.h> Description The Direct Rendering Manager (DRM) is a framework to manage Graphics Processing Units (GPUs). It is designed to support the needs of complex graphics devices, usually containing programmable pipelines well suited to 3D graphics acceleration. Furthermore, it is responsible for memory management, interrupt handling and DMA…
drm-memory, drm-mm, drm-gem, drm-ttm – DRM Memory Management Synopsis #include <xf86drm.h> Description Many modern high-end GPUs come with their own memory managers. They even include several different caches that need to be synchronized during access. Textures, framebuffers, command buffers and more need to be stored in memory that can be accessed quickly by the GPU….
drm-memory, drm-mm, drm-gem, drm-ttm – DRM Memory Management Synopsis #include <xf86drm.h> Description Many modern high-end GPUs come with their own memory managers. They even include several different caches that need to be synchronized during access. Textures, framebuffers, command buffers and more need to be stored in memory that can be accessed quickly by the GPU….
drm-memory, drm-mm, drm-gem, drm-ttm – DRM Memory Management Synopsis #include <xf86drm.h> Description Many modern high-end GPUs come with their own memory managers. They even include several different caches that need to be synchronized during access. Textures, framebuffers, command buffers and more need to be stored in memory that can be accessed quickly by the GPU….
drm-kms – Kernel Mode-Setting Synopsis #include <xf86drm.h> #include <xf86drmMode.h> Description Each DRM device provides access to manage which monitors and displays are currently used and what frames to be displayed. This task is called Kernel Mode-Setting (KMS). Historically, this was done in user-space and called User-space Mode-Setting (UMS). Almost all open-source drivers now provide the…
drm-memory, drm-mm, drm-gem, drm-ttm – DRM Memory Management Synopsis #include <xf86drm.h> Description Many modern high-end GPUs come with their own memory managers. They even include several different caches that need to be synchronized during access. Textures, framebuffers, command buffers and more need to be stored in memory that can be accessed quickly by the GPU….
dracut.modules – dracut modules Description dracut uses a modular system to build and extend the initramfs image. All modules are located in /usr/lib/dracut/modules.d or in <git-src>/modules.d. The most basic dracut module is 99base. In 99base the initial shell script init is defined, which gets run by the kernel after initramfs loading. Although you can replace…