4.104.114.84.95
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1 | @c |
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2 | @c COPYRIGHT (c) 1988-1998. |
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3 | @c On-Line Applications Research Corporation (OAR). |
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4 | @c All rights reserved. |
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5 | @c |
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6 | @c $Id$ |
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7 | @c |
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9 | |
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10 | @chapter Filesystem Requirements |
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11 | |
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12 | This chapter details the behavioral requirements that all filesystem |
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13 | implementations must adhere to. |
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15 | @section Filesystem File and Directory Removal Constraints |
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17 | The following POSIX constraints must be honored by all filesystems. |
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18 | |
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19 | @itemize @bullet |
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20 | |
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21 | @item If a node is a directory with children it cannot be removed. |
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23 | @item The root node of any filesystem, whether the base filesystem or a |
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24 | mounted filesystem, cannot be removed. |
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25 | |
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26 | @item A node that is a directory that is acting as the mount point of a file |
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27 | system cannot be removed. |
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29 | @item On filesystems supporting hard links, a link count is maintained. |
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30 | Prior to node removal, the node's link count is decremented by one. The |
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31 | link count must be less than one to allow for removal of the node. |
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32 | |
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33 | @end itemize |
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34 | |
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