3078 lines
126 KiB
HTML
3078 lines
126 KiB
HTML
<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
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<meta name=Generator content="Microsoft Word 14 (filtered)">
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<style>
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<!--
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/* Font Definitions */
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@font-face
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{font-family:Wingdings;
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panose-1:5 0 0 0 0 0 0 0 0 0;}
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@font-face
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{font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
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@font-face
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{font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
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panose-1:2 1 6 9 6 1 1 1 1 1;}
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@font-face
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{font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
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panose-1:2 1 6 9 6 1 1 1 1 1;}
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@font-face
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{font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD>μ<EFBFBD><EFBFBD><EFBFBD>;}
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@font-face
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{font-family:"\@<40><><EFBFBD><EFBFBD>";
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panose-1:2 1 6 9 6 1 1 1 1 1;}
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@font-face
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{font-family:"\@<40><><EFBFBD><EFBFBD>";
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panose-1:2 1 6 0 3 1 1 1 1 1;}
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@font-face
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{font-family:"\@<40><><EFBFBD><EFBFBD>С<EFBFBD><D0A1><EFBFBD>μ<EFBFBD><CEBC><EFBFBD>";}
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/* Style Definitions */
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p.MsoNormal, li.MsoNormal, div.MsoNormal
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{margin:0cm;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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font-size:10.5pt;
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font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
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h1
|
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{mso-style-link:"<22><><EFBFBD><EFBFBD> 1 Char";
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margin-top:17.0pt;
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margin-bottom:16.5pt;
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margin-left:7.2pt;
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text-align:center;
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page-break-after:avoid;
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font-size:22.0pt;
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font-family:"Times New Roman","serif";
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font-weight:bold;}
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h2
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{mso-style-link:"<22><><EFBFBD><EFBFBD> 2 Char";
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margin-top:13.0pt;
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margin-right:0cm;
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margin-bottom:13.0pt;
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margin-left:0cm;
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text-align:justify;
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font-size:16.0pt;
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font-family:"Arial","sans-serif";
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font-weight:bold;}
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h3
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{mso-style-link:"<22><><EFBFBD><EFBFBD> 3 Char";
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margin:0cm;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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page-break-after:avoid;
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font-size:14.0pt;
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font-family:"Arial","sans-serif";
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font-weight:bold;}
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h4
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{mso-style-link:"<22><><EFBFBD><EFBFBD> 4 Char";
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margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:28.8pt;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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page-break-after:avoid;
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font-size:12.0pt;
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font-family:"Arial","sans-serif";
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font-weight:bold;}
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h5
|
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{mso-style-link:"<22><><EFBFBD><EFBFBD> 5 Char";
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margin-top:14.0pt;
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margin-right:0cm;
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margin-bottom:14.5pt;
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margin-left:36.0pt;
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text-align:justify;
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text-justify:inter-ideograph;
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text-indent:-36.0pt;
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line-height:156%;
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page-break-after:avoid;
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font-size:14.0pt;
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font-family:"Times New Roman","serif";
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font-weight:bold;}
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h6
|
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{mso-style-link:"<22><><EFBFBD><EFBFBD> 6 Char";
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margin-top:12.0pt;
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margin-right:0cm;
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margin-bottom:3.2pt;
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margin-left:43.2pt;
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text-align:justify;
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text-justify:inter-ideograph;
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text-indent:-43.2pt;
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line-height:133%;
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page-break-after:avoid;
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font-size:12.0pt;
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font-family:"Arial","sans-serif";
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font-weight:bold;}
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p.MsoHeading7, li.MsoHeading7, div.MsoHeading7
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{mso-style-link:"<22><><EFBFBD><EFBFBD> 7 Char";
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margin-top:12.0pt;
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margin-right:0cm;
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margin-bottom:3.2pt;
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margin-left:50.4pt;
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text-align:justify;
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font-size:12.0pt;
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font-family:"Times New Roman","serif";
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font-weight:bold;}
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p.MsoHeading8, li.MsoHeading8, div.MsoHeading8
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{mso-style-link:"<22><><EFBFBD><EFBFBD> 8 Char";
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margin-top:12.0pt;
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margin-right:0cm;
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margin-bottom:3.2pt;
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margin-left:57.6pt;
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text-align:justify;
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text-justify:inter-ideograph;
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text-indent:-72.0pt;
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line-height:133%;
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page-break-after:avoid;
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font-size:12.0pt;
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font-family:"Arial","sans-serif";}
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p.MsoHeading9, li.MsoHeading9, div.MsoHeading9
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{mso-style-link:"<22><><EFBFBD><EFBFBD> 9 Char";
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margin-top:12.0pt;
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margin-right:0cm;
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margin-bottom:3.2pt;
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margin-left:64.8pt;
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text-align:justify;
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text-justify:inter-ideograph;
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text-indent:-79.2pt;
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line-height:133%;
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page-break-after:avoid;
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font-size:10.0pt;
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font-family:"Arial","sans-serif";}
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p.MsoIndex1, li.MsoIndex1, div.MsoIndex1
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{margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:10.5pt;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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text-indent:-10.5pt;
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font-size:10.0pt;
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font-family:"Times New Roman","serif";}
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p.MsoIndex2, li.MsoIndex2, div.MsoIndex2
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{margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:21.0pt;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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text-indent:-10.5pt;
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font-size:10.0pt;
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font-family:"Times New Roman","serif";}
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p.MsoIndex3, li.MsoIndex3, div.MsoIndex3
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{margin-top:0cm;
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margin-left:31.5pt;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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text-indent:-10.5pt;
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font-size:10.0pt;
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font-family:"Times New Roman","serif";}
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p.MsoIndex4, li.MsoIndex4, div.MsoIndex4
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{margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:42.0pt;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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text-indent:-10.5pt;
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font-size:10.0pt;
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font-family:"Times New Roman","serif";}
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p.MsoIndex5, li.MsoIndex5, div.MsoIndex5
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{margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:52.5pt;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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text-indent:-10.5pt;
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font-size:10.0pt;
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font-family:"Times New Roman","serif";}
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p.MsoIndex6, li.MsoIndex6, div.MsoIndex6
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{margin-top:0cm;
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margin-right:0cm;
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margin-left:63.0pt;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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text-indent:-10.5pt;
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font-size:10.0pt;
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font-family:"Times New Roman","serif";}
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p.MsoIndex7, li.MsoIndex7, div.MsoIndex7
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{margin-top:0cm;
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margin-right:0cm;
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margin-left:73.5pt;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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text-indent:-10.5pt;
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font-size:10.0pt;
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font-family:"Times New Roman","serif";}
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p.MsoIndex8, li.MsoIndex8, div.MsoIndex8
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{margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:84.0pt;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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text-indent:-10.5pt;
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font-family:"Times New Roman","serif";}
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p.MsoIndex9, li.MsoIndex9, div.MsoIndex9
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{margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:94.5pt;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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text-indent:-10.5pt;
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font-size:10.0pt;
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font-family:"Times New Roman","serif";}
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p.MsoToc1, li.MsoToc1, div.MsoToc1
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{margin:0cm;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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font-family:"Times New Roman","serif";
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font-weight:bold;}
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p.MsoToc2, li.MsoToc2, div.MsoToc2
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{margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:21.0pt;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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font-size:10.0pt;
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font-family:"Times New Roman","serif";}
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p.MsoToc3, li.MsoToc3, div.MsoToc3
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{margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:42.0pt;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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font-size:10.0pt;
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font-family:"Times New Roman","serif";}
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p.MsoToc4, li.MsoToc4, div.MsoToc4
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{margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:31.5pt;
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margin-bottom:.0001pt;
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font-size:9.0pt;
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font-family:"Times New Roman","serif";}
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p.MsoToc5, li.MsoToc5, div.MsoToc5
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{margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:42.0pt;
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margin-bottom:.0001pt;
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font-size:9.0pt;
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font-family:"Times New Roman","serif";}
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p.MsoToc6, li.MsoToc6, div.MsoToc6
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{margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:52.5pt;
|
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margin-bottom:.0001pt;
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font-size:9.0pt;
|
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font-family:"Times New Roman","serif";}
|
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p.MsoToc7, li.MsoToc7, div.MsoToc7
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{margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:63.0pt;
|
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margin-bottom:.0001pt;
|
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font-size:9.0pt;
|
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font-family:"Times New Roman","serif";}
|
||
p.MsoToc8, li.MsoToc8, div.MsoToc8
|
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{margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:73.5pt;
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margin-bottom:.0001pt;
|
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font-size:9.0pt;
|
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font-family:"Times New Roman","serif";}
|
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p.MsoToc9, li.MsoToc9, div.MsoToc9
|
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{margin-top:0cm;
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margin-right:0cm;
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margin-bottom:0cm;
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margin-left:84.0pt;
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margin-bottom:.0001pt;
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font-size:9.0pt;
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font-family:"Times New Roman","serif";}
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p.MsoFootnoteText, li.MsoFootnoteText, div.MsoFootnoteText
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{mso-style-link:"<22><>ע<EFBFBD>ı<EFBFBD> Char";
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margin:0cm;
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margin-bottom:.0001pt;
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layout-grid-mode:char;
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font-size:9.0pt;
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font-family:"Times New Roman","serif";}
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p.MsoCommentText, li.MsoCommentText, div.MsoCommentText
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{mso-style-link:"<22><>ע<EFBFBD><D7A2><EFBFBD><EFBFBD> Char";
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margin:0cm;
|
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margin-bottom:.0001pt;
|
||
font-size:10.0pt;
|
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font-family:"Times New Roman","serif";}
|
||
p.MsoHeader, li.MsoHeader, div.MsoHeader
|
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{mso-style-link:"ҳü Char";
|
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margin:0cm;
|
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margin-bottom:.0001pt;
|
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text-align:center;
|
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layout-grid-mode:char;
|
||
border:none;
|
||
padding:0cm;
|
||
font-size:9.0pt;
|
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font-family:"Times New Roman","serif";}
|
||
p.MsoFooter, li.MsoFooter, div.MsoFooter
|
||
{mso-style-link:"ҳ<><D2B3> Char";
|
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margin:0cm;
|
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margin-bottom:.0001pt;
|
||
layout-grid-mode:char;
|
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font-size:9.0pt;
|
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font-family:"Times New Roman","serif";}
|
||
p.MsoIndexHeading, li.MsoIndexHeading, div.MsoIndexHeading
|
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{mso-style-name:"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>\,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ\,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ1\,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ2";
|
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margin:0cm;
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margin-bottom:.0001pt;
|
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text-align:justify;
|
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text-justify:inter-ideograph;
|
||
font-size:10.0pt;
|
||
font-family:"Times New Roman","serif";}
|
||
p.MsoCaption, li.MsoCaption, div.MsoCaption
|
||
{margin:0cm;
|
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margin-bottom:.0001pt;
|
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text-align:justify;
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text-justify:inter-ideograph;
|
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font-size:10.0pt;
|
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font-family:"Arial","sans-serif";}
|
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p.MsoTof, li.MsoTof, div.MsoTof
|
||
{margin-top:0cm;
|
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margin-right:0cm;
|
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margin-bottom:0cm;
|
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margin-left:42.0pt;
|
||
margin-bottom:.0001pt;
|
||
text-align:justify;
|
||
text-justify:inter-ideograph;
|
||
text-indent:-21.0pt;
|
||
font-size:10.0pt;
|
||
font-family:"Times New Roman","serif";}
|
||
span.MsoFootnoteReference
|
||
{vertical-align:super;}
|
||
p.MsoList, li.MsoList, div.MsoList
|
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{margin-top:0cm;
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margin-right:0cm;
|
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margin-bottom:0cm;
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margin-left:21.0pt;
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margin-bottom:.0001pt;
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text-align:center;
|
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text-indent:-21.0pt;
|
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font-size:10.0pt;
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font-family:"Times New Roman","serif";}
|
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p.MsoList2, li.MsoList2, div.MsoList2
|
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{margin:0cm;
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margin-bottom:.0001pt;
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text-align:justify;
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text-justify:inter-ideograph;
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font-size:10.0pt;
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font-family:"Times New Roman","serif";}
|
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p.MsoList4, li.MsoList4, div.MsoList4
|
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{margin:0cm;
|
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margin-bottom:.0001pt;
|
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text-align:center;
|
||
font-size:10.0pt;
|
||
font-family:"Times New Roman","serif";}
|
||
p.MsoDate, li.MsoDate, div.MsoDate
|
||
{mso-style-link:"<22><><EFBFBD><EFBFBD> Char";
|
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margin-top:0cm;
|
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margin-right:0cm;
|
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margin-bottom:0cm;
|
||
margin-left:5.0pt;
|
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margin-bottom:.0001pt;
|
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text-align:justify;
|
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text-justify:inter-ideograph;
|
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font-size:10.0pt;
|
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font-family:"Times New Roman","serif";}
|
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a:link, span.MsoHyperlink
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{mso-style-name:"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>\,<2C><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>";
|
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color:blue;
|
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text-decoration:underline;}
|
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a:visited, span.MsoHyperlinkFollowed
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{color:purple;
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text-decoration:underline;}
|
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p
|
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{mso-style-name:"<22><>ͨ\(<28><>վ\)\,<2C><>ͨ \(Web\)\,<2C><>ͨ \(Web\)1\,<2C><>ͨ \(Web\)2\,<2C><>ͨ \(Web\)3";
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margin-right:0cm;
|
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margin-left:0cm;
|
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font-size:12.0pt;
|
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font-family:"Times New Roman","serif";}
|
||
pre
|
||
{mso-style-name:"HTML Ԥ<><D4A4><EFBFBD>ʽ\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>1\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>2\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>3";
|
||
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tt
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{mso-style-link:"<22><>ע<EFBFBD><D7A2><EFBFBD>ı<EFBFBD> Char";
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{mso-style-name:<EFBFBD>DZ<EFBFBD><EFBFBD><EFBFBD>1;
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span.3CharCharChar
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span.3CharChar1CharCharChar
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{mso-style-name:"ͼ<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char Char1 Char Char Char";
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span.5CharChar
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span.5CharCharChar
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{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<EFBFBD><EFBFBD>;
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{mso-style-name:ͼ˵<EFBFBD><EFBFBD>2;
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{mso-style-name:<EFBFBD>ı<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>2;
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{mso-style-name:"ͼ<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char Char Char Char Char";
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span.1Char
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{mso-style-name:"<22><><EFBFBD><EFBFBD> 1 Char";
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{mso-style-name:"ͼ<><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3 Char1";
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{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<EFBFBD><EFBFBD>1;
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{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>02;
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|
||
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|
||
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|
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|
||
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|
||
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|
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|
||
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|
||
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|
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|
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|
||
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|
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|
||
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|
||
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|
||
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|
||
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|
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|
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|
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|
||
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|
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|
||
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|
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|
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|
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|
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|
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{mso-style-name:<EFBFBD><EFBFBD>¼3;
|
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|
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{mso-style-name:"<22><><EFBFBD><EFBFBD> 3 Char";
|
||
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|
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|
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{mso-style-name:<EFBFBD><EFBFBD>¼1;
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|
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|
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|
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|
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|
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|
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|
||
{mso-style-name:"<22><><EFBFBD><EFBFBD> 4 Char";
|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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span.Char1
|
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|
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|
||
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|
||
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|
||
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|
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|
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|
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|
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|
||
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|
||
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|
||
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|
||
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|
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|
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|
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|
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|
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span.14Char
|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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span.Char2
|
||
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
||
font-family:"Arial","sans-serif";}
|
||
p.TableTitle, li.TableTitle, div.TableTitle
|
||
{mso-style-name:TableTitle;
|
||
margin:0cm;
|
||
margin-bottom:.0001pt;
|
||
text-align:center;
|
||
font-size:10.0pt;
|
||
font-family:"Arial","sans-serif";}
|
||
p.ProgramTitle, li.ProgramTitle, div.ProgramTitle
|
||
{mso-style-name:ProgramTitle;
|
||
margin:0cm;
|
||
margin-bottom:.0001pt;
|
||
text-align:center;
|
||
font-size:10.0pt;
|
||
font-family:"Arial","sans-serif";}
|
||
p.RightText, li.RightText, div.RightText
|
||
{mso-style-name:RightText;
|
||
margin-top:0cm;
|
||
margin-right:21.0pt;
|
||
margin-bottom:0cm;
|
||
margin-left:42.0pt;
|
||
margin-bottom:.0001pt;
|
||
text-align:justify;
|
||
text-justify:inter-ideograph;
|
||
border:none;
|
||
padding:0cm;
|
||
font-size:9.0pt;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
p.af2, li.af2, div.af2
|
||
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD>;
|
||
margin:0cm;
|
||
margin-bottom:.0001pt;
|
||
text-align:justify;
|
||
text-justify:inter-ideograph;
|
||
font-size:9.0pt;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
p.af3, li.af3, div.af3
|
||
{mso-style-name:<EFBFBD>ؼ<EFBFBD><EFBFBD><EFBFBD>;
|
||
mso-style-link:"<22>ؼ<EFBFBD><D8BC><EFBFBD> Char";
|
||
margin:0cm;
|
||
margin-bottom:.0001pt;
|
||
text-align:justify;
|
||
text-justify:inter-ideograph;
|
||
font-size:10.5pt;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
span.Char3
|
||
{mso-style-name:"<22>ؼ<EFBFBD><D8BC><EFBFBD> Char";
|
||
mso-style-link:<EFBFBD>ؼ<EFBFBD><EFBFBD><EFBFBD>;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
p.af4, li.af4, div.af4
|
||
{mso-style-name:<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>;
|
||
mso-style-link:"<22>ļ<EFBFBD><C4BC><EFBFBD> Char";
|
||
margin:0cm;
|
||
margin-bottom:.0001pt;
|
||
text-align:justify;
|
||
text-justify:inter-ideograph;
|
||
font-size:10.5pt;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
span.Char4
|
||
{mso-style-name:"<22>ļ<EFBFBD><C4BC><EFBFBD> Char";
|
||
mso-style-link:<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
p.af5, li.af5, div.af5
|
||
{mso-style-name:ѡ<EFBFBD><EFBFBD>;
|
||
mso-style-link:"ѡ<><D1A1> Char";
|
||
margin:0cm;
|
||
margin-bottom:.0001pt;
|
||
text-align:justify;
|
||
text-justify:inter-ideograph;
|
||
font-size:10.5pt;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
span.Char5
|
||
{mso-style-name:"ѡ<><D1A1> Char";
|
||
mso-style-link:ѡ<EFBFBD><EFBFBD>;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
p.af6, li.af6, div.af6
|
||
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
mso-style-link:"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Char";
|
||
margin:0cm;
|
||
margin-bottom:.0001pt;
|
||
text-align:justify;
|
||
text-justify:inter-ideograph;
|
||
font-size:10.5pt;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
span.Char6
|
||
{mso-style-name:"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Char";
|
||
mso-style-link:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
p.af7, li.af7, div.af7
|
||
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
mso-style-link:"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Char";
|
||
margin:0cm;
|
||
margin-bottom:.0001pt;
|
||
text-align:justify;
|
||
text-justify:inter-ideograph;
|
||
font-size:10.5pt;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
span.Char7
|
||
{mso-style-name:"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Char";
|
||
mso-style-link:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
p.af8, li.af8, div.af8
|
||
{mso-style-name:<EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
mso-style-link:"<22>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD> Char";
|
||
margin:0cm;
|
||
margin-bottom:.0001pt;
|
||
text-align:justify;
|
||
text-justify:inter-ideograph;
|
||
font-size:10.0pt;
|
||
font-family:"Times New Roman","serif";}
|
||
span.Char8
|
||
{mso-style-name:"<22>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD><EFBFBD> Char";
|
||
mso-style-link:<EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
font-family:"Times New Roman","serif";}
|
||
p.af9, li.af9, div.af9
|
||
{mso-style-name:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
mso-style-link:"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Char";
|
||
margin:0cm;
|
||
margin-bottom:.0001pt;
|
||
text-align:justify;
|
||
text-justify:inter-ideograph;
|
||
font-size:10.5pt;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
span.Char9
|
||
{mso-style-name:"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> Char";
|
||
mso-style-link:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
p.58, li.58, div.58
|
||
{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
margin:0cm;
|
||
margin-bottom:.0001pt;
|
||
font-size:9.0pt;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
p.59, li.59, div.59
|
||
{mso-style-name:ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С5<EFBFBD>ſ<EFBFBD><EFBFBD><EFBFBD>;
|
||
margin:0cm;
|
||
margin-bottom:.0001pt;
|
||
layout-grid-mode:char;
|
||
font-size:9.0pt;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
p.926, li.926, div.926
|
||
{mso-style-name:"<22><>ʽ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> + <20><><EFBFBD>\: 9\.26 <20><><EFBFBD><EFBFBD>";
|
||
margin:0cm;
|
||
margin-bottom:.0001pt;
|
||
layout-grid-mode:char;
|
||
font-size:10.0pt;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
span.5Char4
|
||
{mso-style-name:"<22><><EFBFBD><EFBFBD> 5 Char";
|
||
mso-style-link:"<22><><EFBFBD><EFBFBD> 5";
|
||
font-weight:bold;}
|
||
span.6Char0
|
||
{mso-style-name:"<22><><EFBFBD><EFBFBD> 6 Char";
|
||
mso-style-link:"<22><><EFBFBD><EFBFBD> 6";
|
||
font-family:"Arial","sans-serif";
|
||
font-weight:bold;}
|
||
span.7Char
|
||
{mso-style-name:"<22><><EFBFBD><EFBFBD> 7 Char";
|
||
mso-style-link:"<22><><EFBFBD><EFBFBD> 7";
|
||
font-weight:bold;}
|
||
span.8Char
|
||
{mso-style-name:"<22><><EFBFBD><EFBFBD> 8 Char";
|
||
mso-style-link:"<22><><EFBFBD><EFBFBD> 8";
|
||
font-family:"Arial","sans-serif";}
|
||
span.9Char
|
||
{mso-style-name:"<22><><EFBFBD><EFBFBD> 9 Char";
|
||
mso-style-link:"<22><><EFBFBD><EFBFBD> 9";
|
||
font-family:"Arial","sans-serif";}
|
||
span.Chara
|
||
{mso-style-name:"<22><>ע<EFBFBD>ı<EFBFBD> Char";
|
||
mso-style-link:<EFBFBD><EFBFBD>ע<EFBFBD>ı<EFBFBD>;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
span.Charb
|
||
{mso-style-name:"<22><>ע<EFBFBD><D7A2><EFBFBD><EFBFBD> Char";
|
||
mso-style-link:<EFBFBD><EFBFBD>ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
span.Charc
|
||
{mso-style-name:"ҳü Char";
|
||
mso-style-link:ҳü;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
span.Chard
|
||
{mso-style-name:"ҳ<><D2B3> Char";
|
||
mso-style-link:ҳ<EFBFBD><EFBFBD>;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
span.Chare
|
||
{mso-style-name:"<22><><EFBFBD><EFBFBD> Char";
|
||
mso-style-link:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
span.HTMLChar
|
||
{mso-style-name:"HTML Ԥ<><D4A4><EFBFBD>ʽ Char\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD> Char\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>1 Char\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>2 Char\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>3 Char";
|
||
mso-style-link:"HTML Ԥ<><D4A4><EFBFBD>ʽ\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>1\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>2\,HTML Ԥ<>ȸ<EFBFBD>ʽ<EFBFBD><CABD>3";
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
span.Charf
|
||
{mso-style-name:"<22><>ע<EFBFBD><D7A2><EFBFBD><EFBFBD> Char";
|
||
mso-style-link:<EFBFBD><EFBFBD>ע<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;
|
||
font-weight:bold;}
|
||
span.Charf0
|
||
{mso-style-name:"<22><>ע<EFBFBD><D7A2><EFBFBD>ı<EFBFBD> Char";
|
||
mso-style-link:<EFBFBD><EFBFBD>ע<EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>;
|
||
font-family:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>;}
|
||
.MsoChpDefault
|
||
{font-size:10.0pt;}
|
||
/* Page Definitions */
|
||
@page WordSection1
|
||
{size:595.3pt 841.9pt;
|
||
margin:72.0pt 54.0pt 72.0pt 54.0pt;
|
||
layout-grid:15.6pt;}
|
||
div.WordSection1
|
||
{page:WordSection1;}
|
||
/* List Definitions */
|
||
ol
|
||
{margin-bottom:0cm;}
|
||
ul
|
||
{margin-bottom:0cm;}
|
||
-->
|
||
</style>
|
||
|
||
</head>
|
||
|
||
<body lang=ZH-CN link=blue vlink=purple style='text-justify-trim:punctuation'>
|
||
|
||
<div class=WordSection1 style='layout-grid:15.6pt'>
|
||
|
||
<p class=ab><a name="_Toc53320646"><span style='font-family:<3A><><EFBFBD><EFBFBD>'><EFBFBD><EFBFBD><EFBFBD><EFBFBD></span><span
|
||
lang=EN-US>12-13 linux/fs/open.c</span></a></p>
|
||
|
||
<div class=a align=center style='text-align:center'><span lang=EN-US>
|
||
|
||
<hr size=4 width="100%" align=center>
|
||
|
||
</span></div>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>1</span></u> <b><i>/*</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>2</span></u> <b><i> *
|
||
linux/fs/open.c</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>3</span></u> <b><i> *</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>4</span></u> <b><i> *
|
||
(C) 1991 Linus Torvalds</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>5</span></u> <b><i> */</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>6</span></u> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>7</span></u>
|
||
#include <string.h> // </span><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<EFBFBD>й<EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƕ<EFBFBD>뺯<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>8</span></u>
|
||
#include <errno.h> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD>и<EFBFBD><EFBFBD>ֳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>š<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>9</span></u>
|
||
#include <fcntl.h> // </span><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŷ<EFBFBD><EFBFBD>塣</p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>10</span></u>
|
||
#include <sys/types.h> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD>ṹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͡<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>11</span></u>
|
||
#include <utime.h> // </span><EFBFBD>û<EFBFBD>ʱ<EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʺ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>ṹ<EFBFBD>Լ<EFBFBD><span
|
||
lang=EN-US>utime()</span>ԭ<EFBFBD>͡<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>12</span></u>
|
||
#include <sys/stat.h> // </span><EFBFBD>ļ<EFBFBD>״̬ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>״̬<EFBFBD>ṹ<span
|
||
lang=EN-US>stat{}</span><EFBFBD>ͷ<EFBFBD><EFBFBD>ų<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>13</span></u> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>14</span></u>
|
||
#include <linux/sched.h> // </span><EFBFBD><EFBFBD><EFBFBD>ȳ<EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṹ<span lang=EN-US>task_struct</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD>ݵȡ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>15</span></u>
|
||
#include <linux/tty.h> // tty</span>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>й<EFBFBD><span
|
||
lang=EN-US>tty_io</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD>ŷ<EFBFBD><EFBFBD><EFBFBD>IJ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>16</span></u>
|
||
#include <linux/kernel.h> // </span><EFBFBD>ں<EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<EFBFBD>ں˳<EFBFBD><EFBFBD>ú<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԭ<EFBFBD>ζ<EFBFBD><EFBFBD>塣</p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>17</span></u> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>18</span></u>
|
||
#include <asm/segment.h> // </span><EFBFBD>β<EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>йضμĴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƕ<EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD>ຯ<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>19</span></u> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> //// </span>ȡ<EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>dev</span><EFBFBD>Ǻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѱ<EFBFBD>װ<EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD>š<EFBFBD><span
|
||
lang=EN-US>ubuf</span><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><span lang=EN-US>ustat</span><EFBFBD>ṹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD>룬<EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span>ϵͳ<EFBFBD><EFBFBD><EFBFBD>ص<EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѱ<EFBFBD>װ<EFBFBD><EFBFBD><span
|
||
lang=EN-US>mounted</span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD>ͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>ɹ<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>ubuf</span>ָ<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>ustate</span><EFBFBD>ṹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD>ܿ<EFBFBD><EFBFBD>п<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϳ<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // ustat</span><EFBFBD>ṹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>include/sys/types.h</span><EFBFBD>С<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>20</span></u> int
|
||
<u><span style='color:blue'>sys_ustat</span></u>(int dev, struct <u><span
|
||
style='color:blue'>ustat</span></u> * ubuf)</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>21</span></u> {</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>22</span></u>
|
||
return -<u><span style='color:blue'>ENOSYS</span></u>;
|
||
// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>룺<EFBFBD><EFBFBD><EFBFBD>ܻ<EFBFBD>δʵ<EFBFBD>֡<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>23</span></u> }</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>24</span></u> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> //// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʺ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD>䡣</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>filename</span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>times</span><EFBFBD>Ƿ<EFBFBD><EFBFBD>ʺ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>ṹָ<EFBFBD>롣</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>times</span>ָ<EFBFBD>벻Ϊ<span
|
||
lang=EN-US>NULL</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<span lang=EN-US>utimbuf</span><EFBFBD>ṹ<EFBFBD>е<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD>ʺ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD>䡣</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>times</span>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>NULL</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡϵͳ<EFBFBD><EFBFBD>ǰʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD>ʺ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>25</span></u> int
|
||
<u><span style='color:blue'>sys_utime</span></u>(char * filename, struct <u><span
|
||
style='color:blue'>utimbuf</span></u> * <u><span style='color:blue'>times</span></u>)</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>26</span></u> {</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>27</span></u>
|
||
struct <u><span style='color:blue'>m_inode</span></u> * inode;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>28</span></u>
|
||
long actime,modtime;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>29</span></u> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD>ӡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȸ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD>ö<EFBFBD>Ӧ<span lang=EN-US>i</span><EFBFBD>ڵ㡣<EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṩ<EFBFBD>ķ<EFBFBD><EFBFBD>ʺ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>ṹָ<EFBFBD><EFBFBD><span
|
||
lang=EN-US>times</span><EFBFBD><EFBFBD>Ϊ<span lang=EN-US>NULL</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӽṹ<EFBFBD>ж<EFBFBD>ȡ</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD>ʱ<EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD>ǰʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD>ʺ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD>䡣</p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>30</span></u>
|
||
if (!(inode=<u><span style='color:blue'>namei</span></u>(filename)))</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>31</span></u>
|
||
return -<u><span style='color:blue'>ENOENT</span></u>;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>32</span></u>
|
||
if (<u><span style='color:blue'>times</span></u>) {</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>33</span></u>
|
||
actime = <u><span style='color:blue'>get_fs_long</span></u>((unsigned long *)
|
||
&<u><span style='color:blue'>times</span></u>->actime);</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>34</span></u>
|
||
modtime = <u><span style='color:blue'>get_fs_long</span></u>((unsigned long *)
|
||
&<u><span style='color:blue'>times</span></u>->modtime);</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>35</span></u>
|
||
} else</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>36</span></u>
|
||
actime = modtime = <u><span style='color:blue'>CURRENT_TIME</span></u>;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span>Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD>еķ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD>ֶκ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD>ֶΡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>־<EFBFBD><EFBFBD><EFBFBD>Żظ<EFBFBD><span lang=EN-US>i</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>㣬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>37</span></u>
|
||
inode->i_atime = actime;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>38</span></u>
|
||
inode->i_mtime = modtime;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>39</span></u>
|
||
inode->i_dirt = 1;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>40</span></u>
|
||
<u><span style='color:blue'>iput</span></u>(inode);</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>41</span></u>
|
||
return 0;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>42</span></u> }</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>43</span></u> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>44</span></u> <b><i>/*</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>45</span></u> <b><i> *
|
||
XXX should we use the real or effective uid? BSD uses the real uid,</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>46</span></u> <b><i> *
|
||
so as to make this call useful to setuid programs.</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>47</span></u> <b><i> */</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> /* </span></p>
|
||
|
||
<p class=a><span lang=EN-US> * XXX </span><EFBFBD><EFBFBD><EFBFBD>Ǹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD>û<EFBFBD><span
|
||
lang=EN-US>id</span><EFBFBD><EFBFBD><span lang=EN-US>ruid</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD>û<EFBFBD><span lang=EN-US>id</span><EFBFBD><EFBFBD><span
|
||
lang=EN-US>euid</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>BSD</span>ϵͳʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> * </span><EFBFBD><EFBFBD>ʵ<EFBFBD>û<EFBFBD><span
|
||
lang=EN-US>id</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>õ<EFBFBD><EFBFBD>ÿ<EFBFBD><EFBFBD>Թ<EFBFBD><span lang=EN-US>setuid</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>á<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> * </span><EFBFBD><EFBFBD>ע<EFBFBD><EFBFBD><span
|
||
lang=EN-US>POSIX</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD>û<EFBFBD><span lang=EN-US>ID</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> * </span><EFBFBD><EFBFBD>ע<span
|
||
lang=EN-US>1</span><EFBFBD><EFBFBD>Ӣ<EFBFBD><EFBFBD>ע<EFBFBD>Ϳ<EFBFBD>ʼ<EFBFBD><EFBFBD> <span lang=EN-US>'XXX' </span><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> */</span></p>
|
||
|
||
<p class=a><span lang=EN-US> //// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD><EFBFBD>Ȩ<EFBFBD>ޡ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>filename</span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>mode</span><EFBFBD>Ǽ<EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>3</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD>ɣ<EFBFBD><span
|
||
lang=EN-US>R_OK(</span>ֵ<span lang=EN-US>4)</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // W_OK(2)</span><EFBFBD><EFBFBD><span
|
||
lang=EN-US>X_OK(1) </span><EFBFBD><EFBFBD><span lang=EN-US>F_OK(0) </span><EFBFBD><EFBFBD>ɣ<EFBFBD><EFBFBD>ֱ<EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>Ƿ<EFBFBD>ɶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD>к<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣</p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>48</span></u> int
|
||
<u><span style='color:blue'>sys_access</span></u>(const char * filename,int
|
||
mode)</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>49</span></u> {</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>50</span></u>
|
||
struct <u><span style='color:blue'>m_inode</span></u> * inode;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>51</span></u>
|
||
int res, i_mode;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>52</span></u> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>ļ<EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD><EFBFBD>Ȩ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϢҲͬ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD>ṹ<EFBFBD>У<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>ȡ<EFBFBD>ö<EFBFBD>Ӧ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>ڵ㡣<EFBFBD><EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>mode</span><EFBFBD>ɵ<EFBFBD><span lang=EN-US>3</span>λ<EFBFBD><EFBFBD>ɣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD>ϰ˽<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>0007</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>и߱<EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ㲻<EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȩ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣<EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD><EFBFBD><EFBFBD>ȡ<span
|
||
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>룬<EFBFBD><EFBFBD><EFBFBD>Żظ<EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ㡣<EFBFBD><EFBFBD><EFBFBD>⣬<span lang=EN-US>57</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>䡰<span lang=EN-US>iput(inode);</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>61</span><EFBFBD><EFBFBD>֮<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>53</span></u>
|
||
mode &= 0007;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>54</span></u>
|
||
if (!(inode=<u><span style='color:blue'>namei</span></u>(filename)))</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>55</span></u>
|
||
return -<u><span style='color:blue'>EACCES</span></u>;
|
||
// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>룺<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȩ<EFBFBD>ޡ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>56</span></u>
|
||
i_mode = res = inode->i_mode & 0777;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>57</span></u>
|
||
<u><span style='color:blue'>iput</span></u>(inode);</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD>Ǹ<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD>ͬ<EFBFBD><EFBFBD>һ<EFBFBD>飬<EFBFBD><EFBFBD>ȡ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<span
|
||
lang=EN-US>res</span><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>3</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˷<EFBFBD><EFBFBD>ʸ<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԡ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // [[?? </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<span
|
||
lang=EN-US>res >>3 ??]</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>58</span></u>
|
||
if (<u><span style='color:blue'>current</span></u>->uid == inode->i_uid)</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>59</span></u>
|
||
res >>= 6;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>60</span></u>
|
||
else if (<u><span style='color:blue'>current</span></u>->gid ==
|
||
inode->i_gid)</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>61</span></u>
|
||
res >>= 6;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD>ʱ<span lang=EN-US>res</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>3</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǹ<EFBFBD><EFBFBD>ݵ<EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>Ĺ<EFBFBD>ϵѡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>3</span><EFBFBD><EFBFBD><EFBFBD>ء<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ծ<EFBFBD><EFBFBD>в<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<span
|
||
lang=EN-US>mode</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>0</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>62</span></u>
|
||
if ((res & 0007 & mode) == mode)</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>63</span></u>
|
||
return 0;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>64</span></u>
|
||
<b><i>/*</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>65</span></u> <b><i> *
|
||
XXX we are doing this test last because we really should be</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>66</span></u> <b><i> *
|
||
swapping the effective with the real user id (temporarily),</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>67</span></u> <b><i> *
|
||
and then calling suser() routine. If we do call the</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>68</span></u> <b><i> *
|
||
suser() routine, it needs to be called last. </i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>69</span></u> <b><i> */</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US>
|
||
/*</span></p>
|
||
|
||
<p class=a><span lang=EN-US>
|
||
* XXX </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IJ<EFBFBD><EFBFBD>ԣ<EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD>û<EFBFBD><span lang=EN-US>ID</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US>
|
||
* </span><EFBFBD><EFBFBD>ʵ<EFBFBD>û<EFBFBD><span lang=EN-US>ID</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD>أ<EFBFBD><EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD>ŵ<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>suser()</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȷʵҪ<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US>
|
||
* suser()</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD>ű<EFBFBD><EFBFBD><EFBFBD><EFBFBD>á<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US>
|
||
*/</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD>û<EFBFBD><span
|
||
lang=EN-US>ID</span>Ϊ<span lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD>κ<EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD>С<EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣</p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>70</span></u>
|
||
if ((!<u><span style='color:blue'>current</span></u>->uid) &&</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>71</span></u>
|
||
(!(mode & 1) || (i_mode & 0111)))</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>72</span></u>
|
||
return 0;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>73</span></u>
|
||
return -<u><span style='color:blue'>EACCES</span></u>;
|
||
// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>룺<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȩ<EFBFBD>ޡ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>74</span></u> }</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>75</span></u> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> //// </span><EFBFBD>ı䵱ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ¼ϵͳ<EFBFBD><EFBFBD><EFBFBD>á<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>filename</span><EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣</p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>76</span></u> int
|
||
<u><span style='color:blue'>sys_chdir</span></u>(const char * filename)</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>77</span></u> {</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>78</span></u>
|
||
struct <u><span style='color:blue'>m_inode</span></u> * inode;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>79</span></u> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>ı䵱ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>ѽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṹ<EFBFBD>ĵ<EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ¼<EFBFBD>ֶ<EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ㡣</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡĿ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ㡣<EFBFBD><EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㲻<EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // i</span><EFBFBD>ڵ㲻<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>Ŀ¼<span
|
||
lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD>Żظ<EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣</p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>80</span></u>
|
||
if (!(inode = <u><span style='color:blue'>namei</span></u>(filename)))</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>81</span></u>
|
||
return -<u><span style='color:blue'>ENOENT</span></u>;
|
||
// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>룺<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڡ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>82</span></u>
|
||
if (!<u><span style='color:blue'>S_ISDIR</span></u>(inode->i_mode)) {</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>83</span></u>
|
||
<u><span style='color:blue'>iput</span></u>(inode);</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>84</span></u>
|
||
return -<u><span style='color:blue'>ENOTDIR</span></u>;
|
||
// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>룺<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>85</span></u>
|
||
}</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span>Ȼ<EFBFBD><EFBFBD><EFBFBD>ͷŽ<EFBFBD><EFBFBD><EFBFBD>ԭ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ¼<span
|
||
lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õĹ<EFBFBD><EFBFBD><EFBFBD>Ŀ¼<span lang=EN-US>i</span><EFBFBD>ڵ㡣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>0</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>86</span></u>
|
||
<u><span style='color:blue'>iput</span></u>(<u><span style='color:blue'>current</span></u>->pwd);</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>87</span></u>
|
||
<u><span style='color:blue'>current</span></u>->pwd = inode;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>88</span></u>
|
||
return (0);</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>89</span></u> }</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>90</span></u> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> //// </span><EFBFBD>ı<EFBFBD><EFBFBD>Ŀ¼ϵͳ<EFBFBD><EFBFBD><EFBFBD>á<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD>Ϊ<EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD>̵ĸ<EFBFBD>Ŀ¼<span
|
||
lang=EN-US>'/'</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣</p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>91</span></u> int
|
||
<u><span style='color:blue'>sys_chroot</span></u>(const char * filename)</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>92</span></u> {</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>93</span></u>
|
||
struct <u><span style='color:blue'>m_inode</span></u> * inode;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>94</span></u> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڸı䵱ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṹ<EFBFBD>еĸ<EFBFBD>Ŀ¼<EFBFBD>ֶ<EFBFBD><span
|
||
lang=EN-US>root</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㡣</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ㲻<EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㲻<EFBFBD><EFBFBD>Ŀ¼<span
|
||
lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD>Żظ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // i</span><EFBFBD>ڵ㣬Ҳ<EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣</p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>95</span></u>
|
||
if (!(inode=<u><span style='color:blue'>namei</span></u>(filename)))</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>96</span></u>
|
||
return -<u><span style='color:blue'>ENOENT</span></u>;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>97</span></u>
|
||
if (!<u><span style='color:blue'>S_ISDIR</span></u>(inode->i_mode)) {</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>98</span></u>
|
||
<u><span style='color:blue'>iput</span></u>(inode);</span></p>
|
||
|
||
<p class=a><span lang=EN-US> <u><span style='color:blue'>99</span></u>
|
||
return -<u><span style='color:blue'>ENOTDIR</span></u>;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>100</span></u><span
|
||
lang=EN-US> }</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span>Ȼ<EFBFBD><EFBFBD><EFBFBD>ͷŵ<EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD>̵ĸ<EFBFBD>Ŀ¼<span
|
||
lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊָ<EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>0</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>101</span></u><span
|
||
lang=EN-US> <u><span
|
||
style='color:blue'>iput</span></u>(<u><span style='color:blue'>current</span></u>->root);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>102</span></u><span
|
||
lang=EN-US> <u><span
|
||
style='color:blue'>current</span></u>->root = inode;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>103</span></u><span
|
||
lang=EN-US> return (0);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>104</span></u><span
|
||
lang=EN-US> }</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>105</span></u><span
|
||
lang=EN-US> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> //// </span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD>á<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>filename</span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>mode</span><EFBFBD><EFBFBD><EFBFBD>µ<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԡ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣</p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>106</span></u><span
|
||
lang=EN-US> int <u><span style='color:blue'>sys_chmod</span></u>(const char *
|
||
filename,int mode)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>107</span></u><span
|
||
lang=EN-US> {</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>108</span></u><span
|
||
lang=EN-US> struct <u><span
|
||
style='color:blue'>m_inode</span></u> * inode;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>109</span></u><span
|
||
lang=EN-US> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD>Ϊָ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>µķ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>mode</span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD>У<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ㡣<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㲻<EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>루<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD>̵<EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD>û<EFBFBD><span
|
||
lang=EN-US>id</span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><span lang=EN-US>id</span><EFBFBD><EFBFBD>ͬ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD><EFBFBD>dz<EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Żظ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>ļ<EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>루û<EFBFBD>з<EFBFBD><EFBFBD><EFBFBD>Ȩ<EFBFBD>ޣ<EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>110</span></u><span
|
||
lang=EN-US> if (!(inode=<u><span
|
||
style='color:blue'>namei</span></u>(filename)))</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>111</span></u><span
|
||
lang=EN-US>
|
||
return -<u><span style='color:blue'>ENOENT</span></u>;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>112</span></u><span
|
||
lang=EN-US> if ((<u><span
|
||
style='color:blue'>current</span></u>->euid != inode->i_uid) && !<u><span
|
||
style='color:blue'>suser</span></u>()) {</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>113</span></u><span
|
||
lang=EN-US>
|
||
<u><span style='color:blue'>iput</span></u>(inode);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>114</span></u><span
|
||
lang=EN-US>
|
||
return -<u><span style='color:blue'>EACCES</span></u>;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>115</span></u><span
|
||
lang=EN-US> }</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ø<EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ø<EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ı<EFBFBD>־<EFBFBD><EFBFBD><EFBFBD>Żظ<EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>116</span></u><span
|
||
lang=EN-US> inode->i_mode =
|
||
(mode & 07777) | (inode->i_mode & ~07777);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>117</span></u><span
|
||
lang=EN-US> inode->i_dirt =
|
||
1;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>118</span></u><span
|
||
lang=EN-US> <u><span
|
||
style='color:blue'>iput</span></u>(inode);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>119</span></u><span
|
||
lang=EN-US> return 0;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>120</span></u><span
|
||
lang=EN-US> }</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>121</span></u><span
|
||
lang=EN-US> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> //// </span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD>á<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>filename</span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>uid</span><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD>ʶ<EFBFBD><EFBFBD><span lang=EN-US>(</span><EFBFBD>û<EFBFBD><span lang=EN-US>ID)</span><EFBFBD><EFBFBD><span
|
||
lang=EN-US>gid</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>ID</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣</p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>122</span></u><span
|
||
lang=EN-US> int <u><span style='color:blue'>sys_chown</span></u>(const char *
|
||
filename,int uid,int gid)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>123</span></u><span
|
||
lang=EN-US> {</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>124</span></u><span
|
||
lang=EN-US> struct <u><span
|
||
style='color:blue'>m_inode</span></u> * inode;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>125</span></u><span
|
||
lang=EN-US> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD>е<EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>ID</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫȡ<EFBFBD>ø<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ㡣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㲻<EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>루<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>Ŀ¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD>̲<EFBFBD><EFBFBD>dz<EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD>Żظ<EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>루û<EFBFBD>з<EFBFBD><EFBFBD><EFBFBD>Ȩ<EFBFBD>ޣ<EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>126</span></u><span
|
||
lang=EN-US> if (!(inode=<u><span
|
||
style='color:blue'>namei</span></u>(filename)))</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>127</span></u><span
|
||
lang=EN-US>
|
||
return -<u><span style='color:blue'>ENOENT</span></u>;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>128</span></u><span
|
||
lang=EN-US> if (!<u><span
|
||
style='color:blue'>suser</span></u>()) {</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>129</span></u><span
|
||
lang=EN-US>
|
||
<u><span style='color:blue'>iput</span></u>(inode);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>130</span></u><span
|
||
lang=EN-US>
|
||
return -<u><span style='color:blue'>EACCES</span></u>;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>131</span></u><span
|
||
lang=EN-US> }</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ǿ<EFBFBD><EFBFBD>ò<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṩ<EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><span lang=EN-US>ID</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>ID</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD>Ѿ<EFBFBD><EFBFBD>ı<EFBFBD>־<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>Żظ<EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>0</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>132</span></u><span
|
||
lang=EN-US>
|
||
inode->i_uid=uid;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>133</span></u><span
|
||
lang=EN-US>
|
||
inode->i_gid=gid;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>134</span></u><span
|
||
lang=EN-US> inode->i_dirt=1;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>135</span></u><span
|
||
lang=EN-US> <u><span
|
||
style='color:blue'>iput</span></u>(inode);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>136</span></u><span
|
||
lang=EN-US> return 0;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>137</span></u><span
|
||
lang=EN-US> }</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>138</span></u><span
|
||
lang=EN-US> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> //// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD><EFBFBD>͡<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>ú<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>sys_open()</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>tty</span><EFBFBD>ն<EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>Ե<EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD>̵<EFBFBD><EFBFBD><EFBFBD><EFBFBD>úͶ<EFBFBD><span
|
||
lang=EN-US>tty</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>á<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>-1</span><EFBFBD><EFBFBD>ʾʧ<EFBFBD>ܣ<EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD>ַ<EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD><EFBFBD>ܴ<EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>139</span></u><span
|
||
lang=EN-US> static int <u><span style='color:blue'>check_char_dev</span></u>(struct
|
||
<u><span style='color:blue'>m_inode</span></u> * inode, int dev, int flag)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>140</span></u><span
|
||
lang=EN-US> {</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>141</span></u><span
|
||
lang=EN-US> struct <u><span
|
||
style='color:blue'>tty_struct</span></u> *tty;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>142</span></u><span
|
||
lang=EN-US> int min;
|
||
//
|
||
</span><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD>š<EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>143</span></u><span
|
||
lang=EN-US> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span>ֻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>4</span><EFBFBD><EFBFBD><span lang=EN-US>/dev/ttyxx</span><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>5</span><EFBFBD><EFBFBD><span
|
||
lang=EN-US>/dev/tty</span><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>/dev/tty</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>п<EFBFBD><EFBFBD><EFBFBD><EFBFBD>նˣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǽ<EFBFBD><EFBFBD>̿<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ն<EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD>ͬ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>/dev/tty</span><EFBFBD>豸<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><EFBFBD>ʹ<EFBFBD>õ<EFBFBD><span
|
||
lang=EN-US>/dev/ttyxx</span><EFBFBD>豸֮һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>նˣ<EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṹ<EFBFBD>е<EFBFBD><span
|
||
lang=EN-US>tty</span><EFBFBD>ֶν<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>4</span><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD>ijһ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD>š<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD> <span
|
||
lang=EN-US>/dev/tty</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>MAJOR(dev) = 5</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>min = </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṹ</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>е<EFBFBD><span lang=EN-US>tty</span><EFBFBD>ֶΣ<EFBFBD><EFBFBD><EFBFBD>ȡ<span
|
||
lang=EN-US>4</span><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD>š<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><span lang=EN-US>4</span><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>豸<EFBFBD>š<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US> 4</span><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD>С<EFBFBD><EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>п<EFBFBD><EFBFBD><EFBFBD><EFBFBD>նˣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD>Ŵ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>
|
||
-1</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD>ڽ<EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>п<EFBFBD><EFBFBD><EFBFBD><EFBFBD>նˣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>߲<EFBFBD><EFBFBD>ܴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>144</span></u><span
|
||
lang=EN-US> if (<u><span
|
||
style='color:blue'>MAJOR</span></u>(dev) == 4 || <u><span style='color:blue'>MAJOR</span></u>(dev)
|
||
== 5) {</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>145</span></u><span
|
||
lang=EN-US>
|
||
if (<u><span style='color:blue'>MAJOR</span></u>(dev) == 5)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>146</span></u><span
|
||
lang=EN-US>
|
||
min = <u><span style='color:blue'>current</span></u>->tty;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>147</span></u><span
|
||
lang=EN-US>
|
||
else</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>148</span></u><span
|
||
lang=EN-US>
|
||
min = <u><span style='color:blue'>MINOR</span></u>(dev);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>149</span></u><span
|
||
lang=EN-US>
|
||
if (min < 0)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>150</span></u><span
|
||
lang=EN-US>
|
||
return -1;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD>α<EFBFBD>ն<EFBFBD><EFBFBD>豸<EFBFBD>ļ<EFBFBD>ֻ<EFBFBD>ܱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>̶<EFBFBD>ռʹ<EFBFBD>á<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD>ű<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>α<EFBFBD>նˣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҹô<EFBFBD><EFBFBD>ļ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // i </span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ü<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US> 1</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD>ѱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>á<EFBFBD><EFBFBD><EFBFBD>˲<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٴ<EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD>豸<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>
|
||
-1</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>tty</span><EFBFBD>ṹָ<EFBFBD><EFBFBD><span lang=EN-US>tty</span>ָ<EFBFBD><EFBFBD><span
|
||
lang=EN-US>tty</span><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>Ӧ<EFBFBD>ṹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span>־<span lang=EN-US>flag</span><EFBFBD>в<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ն˱<EFBFBD>־<span
|
||
lang=EN-US>O_NOCTTY</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>죬<EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>п<EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>նˣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>tty</span><EFBFBD>ṹ<EFBFBD><EFBFBD><span
|
||
lang=EN-US>session</span><EFBFBD>ֶ<EFBFBD>Ϊ<span lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD>ն˻<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>κν<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ŀ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>նˣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ն<EFBFBD><EFBFBD>豸 <span
|
||
lang=EN-US>min </span>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>նˡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ý<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṹ<EFBFBD>ն<EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD><EFBFBD>ֶ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // tty</span>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>min</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ö<EFBFBD>Ӧ<span lang=EN-US>tty</span><EFBFBD>ṹ<EFBFBD>ĻỰ<EFBFBD><EFBFBD><span lang=EN-US>session</span><EFBFBD>ͽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>pgrp</span><EFBFBD>ֱ<EFBFBD><EFBFBD><EFBFBD>ڽ<EFBFBD><EFBFBD>̵Ļ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD>źͽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>š<EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>151</span></u><span
|
||
lang=EN-US>
|
||
if ((<u><span style='color:blue'>IS_A_PTY_MASTER</span></u>(min)) &&
|
||
(inode->i_count>1))</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>152</span></u><span
|
||
lang=EN-US>
|
||
return -1;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>153</span></u><span
|
||
lang=EN-US>
|
||
tty = <u><span style='color:blue'>TTY_TABLE</span></u>(min);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>154</span></u><span
|
||
lang=EN-US>
|
||
if (!(flag & <u><span style='color:blue'>O_NOCTTY</span></u>) &&</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>155</span></u><span
|
||
lang=EN-US>
|
||
<u><span style='color:blue'>current</span></u>->leader &&</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>156</span></u><span
|
||
lang=EN-US>
|
||
<u><span style='color:blue'>current</span></u>->tty<0 &&</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>157</span></u><span
|
||
lang=EN-US>
|
||
tty->session==0) {</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>158</span></u><span
|
||
lang=EN-US>
|
||
<u><span style='color:blue'>current</span></u>->tty = min;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>159</span></u><span
|
||
lang=EN-US>
|
||
tty->session= <u><span style='color:blue'>current</span></u>->session;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>160</span></u><span
|
||
lang=EN-US>
|
||
tty->pgrp = <u><span style='color:blue'>current</span></u>->pgrp;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>161</span></u><span
|
||
lang=EN-US>
|
||
}</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>־<span
|
||
lang=EN-US>flag</span><EFBFBD>к<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>O_NONBLOCK</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>־<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>Ը<EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD>ն<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>豸<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD>Ϊ<span
|
||
lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ó<EFBFBD>ʱ<EFBFBD><EFBFBD>ʱֵΪ<span lang=EN-US>0</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ն<EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD><EFBFBD>óɷǹ淶ģʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽֻ<EFBFBD>ܹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڷǹ淶ģʽ<EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>ģʽ<EFBFBD>µ<EFBFBD><span
|
||
lang=EN-US>VMIN</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><span lang=EN-US>VTIME</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<span
|
||
lang=EN-US>0</span>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD>֧<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̾Ͷ<EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̷<EFBFBD><EFBFBD>ء<EFBFBD><EFBFBD>μ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // include/termios.h</span><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>162</span></u><span
|
||
lang=EN-US>
|
||
if (flag & <u><span style='color:blue'>O_NONBLOCK</span></u>) {</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>163</span></u><span
|
||
lang=EN-US>
|
||
<u><span style='color:blue'>TTY_TABLE</span></u>(min)-><u><span
|
||
style='color:blue'>termios</span></u>.c_cc[<u><span style='color:blue'>VMIN</span></u>]
|
||
=0;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>164</span></u><span
|
||
lang=EN-US>
|
||
<u><span style='color:blue'>TTY_TABLE</span></u>(min)-><u><span
|
||
style='color:blue'>termios</span></u>.c_cc[<u><span style='color:blue'>VTIME</span></u>]
|
||
=0;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>165</span></u><span
|
||
lang=EN-US>
|
||
<u><span style='color:blue'>TTY_TABLE</span></u>(min)-><u><span
|
||
style='color:blue'>termios</span></u>.c_lflag &= ~ICANON;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>166</span></u><span
|
||
lang=EN-US>
|
||
}</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>167</span></u><span
|
||
lang=EN-US> }</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>168</span></u><span
|
||
lang=EN-US> return 0;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>169</span></u><span
|
||
lang=EN-US> }</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>170</span></u><span
|
||
lang=EN-US> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> //// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD>á<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>filename</span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>flag</span><EFBFBD>Ǵ<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>־<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡֵ<EFBFBD><EFBFBD><span lang=EN-US>O_RDONLY</span><EFBFBD><EFBFBD>ֻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>O_WRONLY</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD>ֻд<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>O_RDWR</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD><span
|
||
lang=EN-US>O_CREAT</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>O_EXCL</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>벻<EFBFBD><EFBFBD><EFBFBD>ڣ<EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // O_APPEND</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>β<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<EFBFBD><EFBFBD>־<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ϣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // mode</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԡ<EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>S_IRWXU</span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD>ִ<EFBFBD><EFBFBD>Ȩ<EFBFBD>ޣ<EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // S_IRUSR</span><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD>ļ<EFBFBD>Ȩ<EFBFBD>ޣ<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>S_IRWXG</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD>ִ<EFBFBD><EFBFBD>Ȩ<EFBFBD>ޣ<EFBFBD><EFBFBD>ȵȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Щ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻӦ<EFBFBD><EFBFBD><EFBFBD>ڽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD>ʣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD>ɶ<EFBFBD>д<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ò<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>(</span><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>)</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>μ<EFBFBD><span lang=EN-US>sys/stat.h</span><EFBFBD><EFBFBD><span
|
||
lang=EN-US>fcntl.h</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>171</span></u><span
|
||
lang=EN-US> int <u><span style='color:blue'>sys_open</span></u>(const char *
|
||
filename,int flag,int mode)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>172</span></u><span
|
||
lang=EN-US> {</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>173</span></u><span
|
||
lang=EN-US> struct <u><span
|
||
style='color:blue'>m_inode</span></u> * inode;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>174</span></u><span
|
||
lang=EN-US> struct <u><span
|
||
style='color:blue'>file</span></u> * f;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>175</span></u><span
|
||
lang=EN-US> int i,fd;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>176</span></u><span
|
||
lang=EN-US> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD>ȶԲ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><EFBFBD>ļ<EFBFBD>ģʽ<EFBFBD>ͽ<EFBFBD><EFBFBD><EFBFBD>ģʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>룬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɵ<EFBFBD><EFBFBD>ļ<EFBFBD>ģʽ<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span>Ϊ<EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̽ṹ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ṹָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>飬<EFBFBD>Բ<EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>fd</span><EFBFBD><EFBFBD><EFBFBD>Ǿ<EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD>û<EFBFBD>п<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>루<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>177</span></u><span
|
||
lang=EN-US> mode &= 0777
|
||
& ~current-><u><span style='color:blue'>umask</span></u>;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>178</span></u><span
|
||
lang=EN-US> for(fd=0 ; fd<<u><span
|
||
style='color:blue'>NR_OPEN</span></u> ; fd++)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>179</span></u><span
|
||
lang=EN-US>
|
||
if (!<u><span style='color:blue'>current</span></u>->filp[fd])
|
||
// </span><EFBFBD>ҵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>180</span></u><span
|
||
lang=EN-US>
|
||
break;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>181</span></u><span
|
||
lang=EN-US> if (fd>=<u><span
|
||
style='color:blue'>NR_OPEN</span></u>)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>182</span></u><span
|
||
lang=EN-US>
|
||
return -<u><span style='color:blue'>EINVAL</span></u>;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span>Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD>̵<EFBFBD>ִ<EFBFBD><EFBFBD>ʱ<EFBFBD>ر<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>close_on_exec</span><EFBFBD><EFBFBD>λͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD>Ӧ<EFBFBD>ı<EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // close_on_exec </span><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λͼ<EFBFBD><EFBFBD>־<EFBFBD><EFBFBD>ÿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ŵ<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȷ<EFBFBD><EFBFBD><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD> <span
|
||
lang=EN-US>execve()</span>ʱ<EFBFBD><EFBFBD>Ҫ<EFBFBD>رյ<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><EFBFBD> <span lang=EN-US>fork()</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ӽ<EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڸ<EFBFBD><EFBFBD>ӽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>execve()</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>³<EFBFBD><EFBFBD><EFBFBD>ʱ</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>ӽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>п<EFBFBD>ʼִ<EFBFBD><EFBFBD><EFBFBD>³<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>close_on_exec</span><EFBFBD>еĶ<EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD>ִ<EFBFBD><EFBFBD><span lang=EN-US>execve()</span>ʱ<EFBFBD>ö<EFBFBD>Ӧ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>رգ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD>մ<EFBFBD><EFBFBD>ڴ<EFBFBD>״̬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span>һ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ʱ<EFBFBD><EFBFBD>Ĭ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>״̬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD>Ӧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span>Ȼ<EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѱ<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>нṹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>f</span>ָ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>鿪ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ṹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ü<EFBFBD><EFBFBD><EFBFBD>Ϊ<span
|
||
lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD>û<EFBFBD>п<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ṹ<EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣<EFBFBD><EFBFBD><EFBFBD>⣬</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><span lang=EN-US>184</span><EFBFBD><EFBFBD><EFBFBD>ϵ<EFBFBD>ָ<EFBFBD>븳ֵ
|
||
<span lang=EN-US>"0+file_table " </span><EFBFBD><EFBFBD>ͬ<EFBFBD><EFBFBD> <span lang=EN-US>"file_table"
|
||
</span><EFBFBD><EFBFBD> <span lang=EN-US>"&file_table[0]"</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD>ܸ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һЩ<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>183</span></u><span
|
||
lang=EN-US> <u><span
|
||
style='color:blue'>current</span></u>->close_on_exec &= ~(1<<fd);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>184</span></u><span
|
||
lang=EN-US> f=0+<u><span
|
||
style='color:blue'>file_table</span></u>;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>185</span></u><span
|
||
lang=EN-US> for (i=0 ; i<<u><span
|
||
style='color:blue'>NR_FILE</span></u> ; i++,f++)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>186</span></u><span
|
||
lang=EN-US>
|
||
if (!f->f_count) break;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>187</span></u><span
|
||
lang=EN-US> if (i>=<u><span
|
||
style='color:blue'>NR_FILE</span></u>)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>188</span></u><span
|
||
lang=EN-US>
|
||
return -<u><span style='color:blue'>EINVAL</span></u>;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ý<EFBFBD><EFBFBD>̶<EFBFBD>Ӧ<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>fd</span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ṹָ<EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ṹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ü<EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>1</span><EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ú<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>open_namei()</span>ִ<EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵС<EFBFBD><EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>뵽<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ṹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>inode</span><EFBFBD><EFBFBD><EFBFBD>Ѵ<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span>ָ<EFBFBD>롣</p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>189</span></u><span
|
||
lang=EN-US> (<u><span
|
||
style='color:blue'>current</span></u>->filp[fd]=f)->f_count++;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>190</span></u><span
|
||
lang=EN-US> if ((i=<u><span
|
||
style='color:blue'>open_namei</span></u>(filename,flag,mode,&inode))<0)
|
||
{</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>191</span></u><span
|
||
lang=EN-US>
|
||
<u><span style='color:blue'>current</span></u>->filp[fd]=<u><span
|
||
style='color:blue'>NULL</span></u>;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>192</span></u><span
|
||
lang=EN-US>
|
||
f->f_count=0;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>193</span></u><span
|
||
lang=EN-US>
|
||
return i;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>194</span></u><span
|
||
lang=EN-US> }</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѵ<EFBFBD><EFBFBD>ļ<EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֶΣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><EFBFBD><EFBFBD>֪<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>͡<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD>ͬ<EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>һЩ<EFBFBD>ر<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><F2BFAAB5><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>豸<EFBFBD>ļ<EFBFBD><C4BC><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><C3B4><EFBFBD>Ǿ<EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><span
|
||
lang=EN-US>check_char_dev()</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>鵱ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD>ܴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD>豸<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // check_char_dev()</span><EFBFBD>л<EFBFBD><EFBFBD><EFBFBD>ݾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>־Ϊ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ÿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>նˡ<EFBFBD>
|
||
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span>ʹ<EFBFBD>ø<EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD>豸<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ô<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֻ<EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>;<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣</p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>195</span></u><span
|
||
lang=EN-US> <b><i>/* ttys are somewhat special (ttyxx major==4, tty major==5)
|
||
*/</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> /* ttys</span><EFBFBD><EFBFBD>Щ<EFBFBD><EFBFBD><EFBFBD>⣨<span
|
||
lang=EN-US>ttyxx</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD><span lang=EN-US>==4</span><EFBFBD><EFBFBD><span lang=EN-US>tty</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD><span
|
||
lang=EN-US>==5</span><EFBFBD><EFBFBD><span lang=EN-US>*/</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>196</span></u><span
|
||
lang=EN-US> if (<u><span
|
||
style='color:blue'>S_ISCHR</span></u>(inode->i_mode))</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>197</span></u><span
|
||
lang=EN-US>
|
||
if (<u><span style='color:blue'>check_char_dev</span></u>(inode,inode->i_zone[0],flag))
|
||
{</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>198</span></u><span
|
||
lang=EN-US>
|
||
<u><span style='color:blue'>iput</span></u>(inode);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>199</span></u><span
|
||
lang=EN-US>
|
||
<u><span style='color:blue'>current</span></u>->filp[fd]=<u><span
|
||
style='color:blue'>NULL</span></u>;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>200</span></u><span
|
||
lang=EN-US>
|
||
f->f_count=0;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>201</span></u><span
|
||
lang=EN-US> return
|
||
-<u><span style='color:blue'>EAGAIN</span></u>;
|
||
// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ţ<EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>á<EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>202</span></u><span
|
||
lang=EN-US>
|
||
}</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǿ<EFBFBD><EFBFBD>豸<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƭ<EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD>ø<EFBFBD><EFBFBD>ٻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>и<EFBFBD><EFBFBD>豸</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>л<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʧЧ<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>203</span></u><span
|
||
lang=EN-US> <b><i>/* Likewise with block-devices: check for floppy_change */</i></b></span></p>
|
||
|
||
<p class=a><span lang=EN-US> /* </span>ͬ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڿ<EFBFBD><EFBFBD>豸<EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƭ<EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US> */</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>204</span></u><span
|
||
lang=EN-US> if (<u><span
|
||
style='color:blue'>S_ISBLK</span></u>(inode->i_mode))</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>205</span></u><span
|
||
lang=EN-US>
|
||
<u><span style='color:blue'>check_disk_change</span></u>(inode->i_zone[0]);</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>dz<EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ṹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ṹ<EFBFBD><EFBFBD><EFBFBD>Ժͱ<EFBFBD>־<EFBFBD><EFBFBD><EFBFBD>þ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ü<EFBFBD><EFBFBD><EFBFBD>Ϊ<span
|
||
lang=EN-US>1</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>i</span><EFBFBD>ڵ<EFBFBD><EFBFBD>ֶ<EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD>дָ<EFBFBD><EFBFBD>Ϊ<span lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>š<EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>206</span></u><span
|
||
lang=EN-US> f->f_mode =
|
||
inode->i_mode;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>207</span></u><span
|
||
lang=EN-US> f->f_flags =
|
||
flag;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>208</span></u><span
|
||
lang=EN-US> f->f_count = 1;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>209</span></u><span
|
||
lang=EN-US> f->f_inode =
|
||
inode;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>210</span></u><span
|
||
lang=EN-US> f->f_pos = 0;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>211</span></u><span
|
||
lang=EN-US> return (fd);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>212</span></u><span
|
||
lang=EN-US> }</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>213</span></u><span
|
||
lang=EN-US> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> //// </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD>á<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>pathname</span><EFBFBD><EFBFBD>·<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>mode</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>sys_open()</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͬ<EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣</p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>214</span></u><span
|
||
lang=EN-US> int <u><span style='color:blue'>sys_creat</span></u>(const char *
|
||
pathname, int mode)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>215</span></u><span
|
||
lang=EN-US> {</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>216</span></u><span
|
||
lang=EN-US> return <u><span
|
||
style='color:blue'>sys_open</span></u>(pathname, <u><span style='color:blue'>O_CREAT</span></u>
|
||
| <u><span style='color:blue'>O_TRUNC</span></u>, mode);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>217</span></u><span
|
||
lang=EN-US> }</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>218</span></u><span
|
||
lang=EN-US> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>ر<EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD><EFBFBD>á<EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>fd</span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣</p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>219</span></u><span
|
||
lang=EN-US> int <u><span style='color:blue'>sys_close</span></u>(unsigned int
|
||
fd)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>220</span></u><span
|
||
lang=EN-US> { </span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>221</span></u><span
|
||
lang=EN-US> struct <u><span
|
||
style='color:blue'>file</span></u> * filp;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>222</span></u><span
|
||
lang=EN-US> </span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD>ȼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD>ԡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD>ڳ<EFBFBD><EFBFBD><EFBFBD>ͬʱ<EFBFBD>ܴ<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>NR_OPEN</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>루<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ч<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȼ<EFBFBD><EFBFBD>λ<EFBFBD><EFBFBD><EFBFBD>̵<EFBFBD>ִ<EFBFBD><EFBFBD>ʱ<EFBFBD>ر<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λͼ<EFBFBD><EFBFBD>Ӧλ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ</p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ṹָ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>NULL</span><EFBFBD><EFBFBD><EFBFBD>س<EFBFBD><EFBFBD><EFBFBD><EFBFBD>롣</p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>223</span></u><span
|
||
lang=EN-US> if (fd >= <u><span
|
||
style='color:blue'>NR_OPEN</span></u>)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>224</span></u><span
|
||
lang=EN-US>
|
||
return -<u><span style='color:blue'>EINVAL</span></u>;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>225</span></u><span
|
||
lang=EN-US> <u><span
|
||
style='color:blue'>current</span></u>->close_on_exec &= ~(1<<fd);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>226</span></u><span
|
||
lang=EN-US> if (!(filp = <u><span
|
||
style='color:blue'>current</span></u>->filp[fd]))</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>227</span></u><span
|
||
lang=EN-US> return
|
||
-<u><span style='color:blue'>EINVAL</span></u>;</span></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ø<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ṹָ<EFBFBD><EFBFBD>Ϊ<span
|
||
lang=EN-US>NULL</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڹر<EFBFBD><EFBFBD>ļ<EFBFBD>֮ǰ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD>ļ<EFBFBD><EFBFBD>ṹ<EFBFBD>еľ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ѿ<EFBFBD>Ϊ<span lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD>ں˳<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD>ļ<EFBFBD><EFBFBD>ṹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ü<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>1</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span><EFBFBD><EFBFBD>Ϊ<span lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ø<EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD><span
|
||
lang=EN-US>0</span><EFBFBD><EFBFBD><EFBFBD>ɹ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ü<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѵ<EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><span lang=EN-US> // </span>˵<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>Ѿ<EFBFBD>û<EFBFBD>н<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ã<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD><EFBFBD>ṹ<EFBFBD>ѱ<EFBFBD>Ϊ<EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷŸ<EFBFBD><EFBFBD>ļ<EFBFBD><span
|
||
lang=EN-US>i</span><EFBFBD>ڵ㣬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><span lang=EN-US>0</span><EFBFBD><EFBFBD></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>228</span></u><span
|
||
lang=EN-US> <u><span
|
||
style='color:blue'>current</span></u>->filp[fd] = <u><span style='color:
|
||
blue'>NULL</span></u>;</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>229</span></u><span
|
||
lang=EN-US> if
|
||
(filp->f_count == 0)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>230</span></u><span
|
||
lang=EN-US>
|
||
<u><span style='color:blue'>panic</span></u>(<i>"Close: file count is
|
||
0"</i>);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>231</span></u><span
|
||
lang=EN-US> if
|
||
(--filp->f_count)</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>232</span></u><span
|
||
lang=EN-US>
|
||
return (0);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>233</span></u><span
|
||
lang=EN-US> <u><span
|
||
style='color:blue'>iput</span></u>(filp->f_inode);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>234</span></u><span
|
||
lang=EN-US> return (0);</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>235</span></u><span
|
||
lang=EN-US> }</span></p>
|
||
|
||
<p class=a><u><span lang=EN-US style='color:blue'>236</span></u><span
|
||
lang=EN-US> </span></p>
|
||
|
||
<div class=a align=center style='text-align:center'><span lang=EN-US>
|
||
|
||
<hr size=4 width="100%" align=center>
|
||
|
||
</span></div>
|
||
|
||
<p class=MsoNormal><span lang=EN-US> </span></p>
|
||
|
||
<p class=MsoNormal><span lang=EN-US> </span></p>
|
||
|
||
</div>
|
||
|
||
</body>
|
||
|
||
</html>
|