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<title>dist-ghc/build/System/PosixCompat/Extensions.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>{-# LINE 1 "src/System/PosixCompat/Extensions.hsc" #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-# LANGUAGE CPP #-}</span>
<a name="line-3"></a><span class='hs-comment'>{-# LINE 2 "src/System/PosixCompat/Extensions.hsc" #-}</span>
<a name="line-4"></a><span class='hs-comment'>{-# LANGUAGE ForeignFunctionInterface #-}</span>
<a name="line-5"></a>
<a name="line-6"></a><span class='hs-comment'>-- | This module provides some functions not present in the unix package.</span>
<a name="line-7"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>PosixCompat</span><span class='hs-varop'>.</span><span class='hs-conid'>Extensions</span> <span class='hs-layout'>(</span>
<a name="line-8"></a> <span class='hs-comment'>-- * Device IDs.</span>
<a name="line-9"></a> <span class='hs-conid'>CMajor</span>
<a name="line-10"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>CMinor</span>
<a name="line-11"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>deviceMajor</span>
<a name="line-12"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>deviceMinor</span>
<a name="line-13"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>makeDeviceID</span>
<a name="line-14"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-15"></a>
<a name="line-16"></a>
<a name="line-17"></a>
<a name="line-18"></a><span class='hs-comment'>{-# LINE 16 "src/System/PosixCompat/Extensions.hsc" #-}</span>
<a name="line-19"></a>
<a name="line-20"></a><span class='hs-comment'>{-# LINE 17 "src/System/PosixCompat/Extensions.hsc" #-}</span>
<a name="line-21"></a>
<a name="line-22"></a><span class='hs-comment'>{-# LINE 18 "src/System/PosixCompat/Extensions.hsc" #-}</span>
<a name="line-23"></a>
<a name="line-24"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Foreign</span><span class='hs-varop'>.</span><span class='hs-conid'>C</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>PosixCompat</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-26"></a>
<a name="line-27"></a>
<a name="line-28"></a><a name="CMajor"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>CMajor</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CUInt</span>
<a name="line-29"></a><a name="CMinor"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>CMinor</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CUInt</span>
<a name="line-30"></a>
<a name="line-31"></a><a name="deviceMajor"></a><span class='hs-comment'>-- | Gets the major number from a 'DeviceID' for a device file.</span>
<a name="line-32"></a><span class='hs-comment'>--</span>
<a name="line-33"></a><span class='hs-comment'>-- The portable implementation always returns @0@.</span>
<a name="line-34"></a><span class='hs-definition'>deviceMajor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DeviceID</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CMajor</span>
<a name="line-35"></a>
<a name="line-36"></a><span class='hs-comment'>{-# LINE 33 "src/System/PosixCompat/Extensions.hsc" #-}</span>
<a name="line-37"></a><span class='hs-definition'>deviceMajor</span> <span class='hs-varid'>dev</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unix_major</span> <span class='hs-varid'>dev</span>
<a name="line-38"></a>
<a name="line-39"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"unix_major"</span> <span class='hs-varid'>unix_major</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CDev</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CUInt</span>
<a name="line-40"></a>
<a name="line-41"></a><span class='hs-comment'>{-# LINE 37 "src/System/PosixCompat/Extensions.hsc" #-}</span>
<a name="line-42"></a>
<a name="line-43"></a><a name="deviceMinor"></a><span class='hs-comment'>-- | Gets the minor number from a 'DeviceID' for a device file.</span>
<a name="line-44"></a><span class='hs-comment'>--</span>
<a name="line-45"></a><span class='hs-comment'>-- The portable implementation always returns @0@.</span>
<a name="line-46"></a><span class='hs-definition'>deviceMinor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DeviceID</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CMinor</span>
<a name="line-47"></a>
<a name="line-48"></a><span class='hs-comment'>{-# LINE 45 "src/System/PosixCompat/Extensions.hsc" #-}</span>
<a name="line-49"></a><span class='hs-definition'>deviceMinor</span> <span class='hs-varid'>dev</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unix_minor</span> <span class='hs-varid'>dev</span>
<a name="line-50"></a>
<a name="line-51"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"unix_minor"</span> <span class='hs-varid'>unix_minor</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CDev</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CUInt</span>
<a name="line-52"></a>
<a name="line-53"></a><span class='hs-comment'>{-# LINE 49 "src/System/PosixCompat/Extensions.hsc" #-}</span>
<a name="line-54"></a>
<a name="line-55"></a><a name="makeDeviceID"></a><span class='hs-comment'>-- | Creates a 'DeviceID' for a device file given a major and minor number.</span>
<a name="line-56"></a><span class='hs-definition'>makeDeviceID</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CMajor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CMinor</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>DeviceID</span>
<a name="line-57"></a>
<a name="line-58"></a><span class='hs-comment'>{-# LINE 55 "src/System/PosixCompat/Extensions.hsc" #-}</span>
<a name="line-59"></a><span class='hs-definition'>makeDeviceID</span> <span class='hs-varid'>ma</span> <span class='hs-varid'>mi</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unix_makedev</span> <span class='hs-varid'>ma</span> <span class='hs-varid'>mi</span>
<a name="line-60"></a>
<a name="line-61"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"unix_makedev"</span> <span class='hs-varid'>unix_makedev</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CUInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CUInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CDev</span>
<a name="line-62"></a>
<a name="line-63"></a><span class='hs-comment'>{-# LINE 59 "src/System/PosixCompat/Extensions.hsc" #-}</span>
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