forked from Imagelibrary/rtems
35 lines
922 B
Perl
35 lines
922 B
Perl
@c
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@c COPYRIGHT (c) 1988-1998.
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@c On-Line Applications Research Corporation (OAR).
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@c All rights reserved.
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@c
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@c $Id$
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@c
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@chapter Filesystem Requirements
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This chapter details the behavioral requirements that all filesystem
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implementations must adhere to.
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@section Filesystem File and Directory Removal Constraints
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The following POSIX constraints must be honored by all filesystems.
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@itemize @bullet
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@item If a node is a directory with children it cannot be removed.
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@item The root node of any filesystem, whether the base filesystem or a
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mounted filesystem, cannot be removed.
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@item A node that is a directory that is acting as the mount point of a file
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system cannot be removed.
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@item On filesystems supporting hard links, a link count is maintained.
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Prior to node removal, the node's link count is decremented by one. The
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link count must be less than one to allow for removal of the node.
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@end itemize
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