vfs: check userland buffers before reading them.
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7 * Copyright 2008-20017, Haiku. All rights reserved.
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26 <div><span>用户指南</span></div>
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60 <div class="box-info">本节的翻译还未完成。在未完成之前,所有的未完成部分都将使用英语原文。</div>
62 <h2><img src="../../images/prefs-images/time-icon_64.png" alt="time-icon_64.png" width="64" height="64" />时间</h2>
63 <table summary="quickinfo" border="0" cellspacing="0" cellpadding="2">
64 <tr><td>桌面栏:</td><td style="width:15px;"></td><td><span class="menu">首选项</span></td></tr>
65 <tr><td>位置:</td><td></td><td><span class="path">/boot/system/preferences/Time</span></td></tr>
66 <tr><td>设置:</td><td></td><td><span class="path">~/config/settings/networktime settings</span> - 所有有关网络时间同步的设置<br />
67 <span class="path">~/config/settings/RTC_time_settings</span> - 硬件时钟设置 (本地 或 GMT)<br />
68 <span class="path">~/config/settings/Time settings</span> - 时区设置<br />
69 <span class="path">~/config/settings/Time_preflet_window</span> - 面板窗口位置等<br />
70 </td></tr>
71 </table>
72 <p>时间首选项的面板分为四个标签页:</p>
74 <h2>
75 <a href="#"><img src="../../images/up.png" style="border:none;float:right" alt="index" /></a>
76 <a id="date-time" name="date-time">日期与时间</a></h2>
77 <img src="../images/prefs-images/time-time.png" alt="time-time.png" />
78 <p>在左边,您可以在日历中进行日期的设置。同时也可以使用右端的上下箭头或者键盘中的光标键来进行月份和年代的修改。</p>
79 <p>类似的,您可以在右侧进行时间设置。或者直接移动时钟的指针。</p>
81 <h2>
82 <a href="#"><img src="../../images/up.png" style="border:none;float:right" alt="index" /></a>
83 <a id="timezone" name="timezone">时区</a></h2>
84 <img src="../images/prefs-images/time-timezone.png" alt="time-timezone.png" />
85 <p>Simply find and choose your country in the list of continents and press <span class="button">Set time zone</span>. For countries with more than one time zone you'll have to expand one level deeper.<br />
86 To the right you'll find the time of the currently set time zone and the preview time of the the zone you've chosen.</p>
87 <p>Also on the right side is a setting for the hardware clock of your computer. There are two modes for the clock:</p>
88 <table summary="layout" border="0" cellpadding="2" cellspacing="0">
89 <tr><td><span class="menu">Local Time</span></td><td></td><td>to display your local time, which you normally want if you dual-boot into Windows.</td></tr>
90 <tr><td><span class="menu">GMT</span></td><td></td><td>to display Greenwich Mean Time, which is the UNIX compatible setting.</td></tr>
91 </table>
93 <h2>
94 <a href="#"><img src="../../images/up.png" style="border:none;float:right" alt="index" /></a>
95 <a id="network" name="network">网络时间</a></h2>
96 <p>Setting date and time manually is pretty much obsolete if you're connected to the internet. There are public servers that supply very exact time signals.</p>
97 <img src="../images/prefs-images/time-network.png" alt="time-network.png" />
98 <p>With the <span class="button">+</span>/<span class="button">-</span> buttons you can add/remove <acronym title="Network Time Protocol">NTP</acronym>-servers to/from the list.</p>
99 <p>The checkboxes below tell the system to <span class="menu">Try all servers</span> when synchronizing, not only the currently selected one, and to <span class="menu">Synchronize at boot</span>, so you can be sure you're clock always shows the correct time.</p>
100 <p>You can <span class="button">Reset to default server list</span> if you accidentally deleted working NTP-servers and <span class="button">Synchronize</span> your clock manually. The synchronization can be achived from the command line (or a script) as well:</p>
101 <pre class="terminal">Time --update</pre>
103 <h2>
104 <a href="#"><img src="../../images/up.png" style="border:none;float:right" alt="index" /></a>
105 <a id="clock" name="clock">时钟</a></h2>
106 <img src="../images/prefs-images/time-clock.png" alt="time-clock.png" />
107 <p>The last tab shows the options of the clock displayed in the Deskbar. You can disable the clock there completely with the top checkbox. The rest are equally self-explanatory.</p>
108 <p><br /></p>
109 <p>In every tab is a button <span class="button">Revert</span> that brings back the settings that were active when you started the Time preferences.</p>
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