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diff --git a/doc/filesystem/preface.texi b/doc/filesystem/preface.texi deleted file mode 100644 index 301f8499f6..0000000000 --- a/doc/filesystem/preface.texi +++ /dev/null @@ -1,78 +0,0 @@ -@c -@c COPYRIGHT (c) 1989-2011. -@c On-Line Applications Research Corporation (OAR). -@c All rights reserved. - -@node Preface, , Top, Top -@unnumbered Preface - -This document describes the implementation of the RTEMS filesystem -infrastructure. This infrastructure supports the following -capabilities: - -@itemize @bullet - -@item Mountable file systems - -@item Hierarchical file system directory structure - -@item POSIX compliant set of routines for the manipulation of files and directories - -@item Individual file and directory support for the following: - -@enumerate - -@item Permissions for read, write and execute - -@item User ID - -@item Group ID - -@item Access time - -@item Modification time - -@item Creation time - -@end enumerate - -@item Hard links to files and directories - -@item Symbolic links to files and directories - -@end itemize - -This has been implemented to provide the framework for a UNIX-like -file system support. POSIX file and directory functions have been -implemented that allow a standard method of accessing file, device and -directory information within file systems. The file system concept that -has been implemented allows for expansion and adaptation of the file -system to a variety of existing and future data storage devices. To this -end, file system mount and unmount capabilities have been included in this -RTEMS framework. - -This framework slightly alters the manner in which devices are handled -under RTEMS from that of public release 4.0.0 and earlier. Devices that -are defined under a given RTEMS configuration will now be registered as -files in a mounted file system. Access to these device drivers and their -associated devices may now be performed through the traditional file system -open(), read(), write(), lseek(), fstat() and ioctl() functions in addition -to the interface provided by the IO Manager in the RTEMS Classic API. - -An In-Memory File System (IMFS) is included which provides full POSIX -filesystem functionality yet is RAM based. The IMFS maintains a -node structure for each file, device, and directory in each mounted -instantiation of its file system. The node structure is used to -manage ownership, access rights, access time, modification time, -and creation time. A union of structures within the IMFS nodal -structure provide for manipulation of file data, device selection, -or directory content as required by the nodal type. Manipulation of -these properties is accomplished through the POSIX set of file and -directory functions. In addition to being useful in its own right, -the IMFS serves as a full featured example filesystem. - -The intended audience for this document is those persons implementing -their own filesystem. Users of the filesystem may find information -on the implementation useful. But the user interface to the filesystem -is through the ISO/ANSI C Library and POSIX 1003.1b file and directory -APIs. |