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<h2 class="chapterHead"><span class="titlemark">Chapter&#x00A0;26</span><br /><a
id="x34-26400026"></a><span
class="pcrr7t-">Foreign.C.Error</span></h2>
<div class="quote">
<div class="verbatim" id="verbatim-439">
module&#x00A0;Foreign.C.Error&#x00A0;(
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;Errno(Errno),&#x00A0;&#x00A0;eOK,&#x00A0;&#x00A0;e2BIG,&#x00A0;&#x00A0;eACCES,&#x00A0;&#x00A0;eADDRINUSE,&#x00A0;&#x00A0;eADDRNOTAVAIL,&#x00A0;&#x00A0;eADV,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;eAFNOSUPPORT,&#x00A0;&#x00A0;eAGAIN,&#x00A0;&#x00A0;eALREADY,&#x00A0;&#x00A0;eBADF,&#x00A0;&#x00A0;eBADMSG,&#x00A0;&#x00A0;eBADRPC,&#x00A0;&#x00A0;eBUSY,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;eCHILD,&#x00A0;&#x00A0;eCOMM,&#x00A0;&#x00A0;eCONNABORTED,&#x00A0;&#x00A0;eCONNREFUSED,&#x00A0;&#x00A0;eCONNRESET,&#x00A0;&#x00A0;eDEADLK,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;eDESTADDRREQ,&#x00A0;&#x00A0;eDIRTY,&#x00A0;&#x00A0;eDOM,&#x00A0;&#x00A0;eDQUOT,&#x00A0;&#x00A0;eEXIST,&#x00A0;&#x00A0;eFAULT,&#x00A0;&#x00A0;eFBIG,&#x00A0;&#x00A0;eFTYPE,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;eHOSTDOWN,&#x00A0;&#x00A0;eHOSTUNREACH,&#x00A0;&#x00A0;eIDRM,&#x00A0;&#x00A0;eILSEQ,&#x00A0;&#x00A0;eINPROGRESS,&#x00A0;&#x00A0;eINTR,&#x00A0;&#x00A0;eINVAL,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;eIO,&#x00A0;&#x00A0;eISCONN,&#x00A0;&#x00A0;eISDIR,&#x00A0;&#x00A0;eLOOP,&#x00A0;&#x00A0;eMFILE,&#x00A0;&#x00A0;eMLINK,&#x00A0;&#x00A0;eMSGSIZE,&#x00A0;&#x00A0;eMULTIHOP,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;eNAMETOOLONG,&#x00A0;&#x00A0;eNETDOWN,&#x00A0;&#x00A0;eNETRESET,&#x00A0;&#x00A0;eNETUNREACH,&#x00A0;&#x00A0;eNFILE,&#x00A0;&#x00A0;eNOBUFS,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;eNODATA,&#x00A0;&#x00A0;eNODEV,&#x00A0;&#x00A0;eNOENT,&#x00A0;&#x00A0;eNOEXEC,&#x00A0;&#x00A0;eNOLCK,&#x00A0;&#x00A0;eNOLINK,&#x00A0;&#x00A0;eNOMEM,&#x00A0;&#x00A0;eNOMSG,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;eNONET,&#x00A0;&#x00A0;eNOPROTOOPT,&#x00A0;&#x00A0;eNOSPC,&#x00A0;&#x00A0;eNOSR,&#x00A0;&#x00A0;eNOSTR,&#x00A0;&#x00A0;eNOSYS,&#x00A0;&#x00A0;eNOTBLK,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;eNOTCONN,&#x00A0;&#x00A0;eNOTDIR,&#x00A0;&#x00A0;eNOTEMPTY,&#x00A0;&#x00A0;eNOTSOCK,&#x00A0;&#x00A0;eNOTTY,&#x00A0;&#x00A0;eNXIO,&#x00A0;&#x00A0;eOPNOTSUPP,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;ePERM,&#x00A0;&#x00A0;ePFNOSUPPORT,&#x00A0;&#x00A0;ePIPE,&#x00A0;&#x00A0;ePROCLIM,&#x00A0;&#x00A0;ePROCUNAVAIL,&#x00A0;&#x00A0;ePROGMISMATCH,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;ePROGUNAVAIL,&#x00A0;&#x00A0;ePROTO,&#x00A0;&#x00A0;ePROTONOSUPPORT,&#x00A0;&#x00A0;ePROTOTYPE,&#x00A0;&#x00A0;eRANGE,&#x00A0;&#x00A0;eREMCHG,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;eREMOTE,&#x00A0;&#x00A0;eROFS,&#x00A0;&#x00A0;eRPCMISMATCH,&#x00A0;&#x00A0;eRREMOTE,&#x00A0;&#x00A0;eSHUTDOWN,&#x00A0;&#x00A0;eSOCKTNOSUPPORT,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;eSPIPE,&#x00A0;&#x00A0;eSRCH,&#x00A0;&#x00A0;eSRMNT,&#x00A0;&#x00A0;eSTALE,&#x00A0;&#x00A0;eTIME,&#x00A0;&#x00A0;eTIMEDOUT,&#x00A0;&#x00A0;eTOOMANYREFS,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;eTXTBSY,&#x00A0;&#x00A0;eUSERS,&#x00A0;&#x00A0;eWOULDBLOCK,&#x00A0;&#x00A0;eXDEV,&#x00A0;&#x00A0;isValidErrno,&#x00A0;&#x00A0;getErrno,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;resetErrno,&#x00A0;&#x00A0;errnoToIOError,&#x00A0;&#x00A0;throwErrno,&#x00A0;&#x00A0;throwErrnoIf,&#x00A0;&#x00A0;throwErrnoIf_,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;throwErrnoIfRetry,&#x00A0;&#x00A0;throwErrnoIfRetry_,&#x00A0;&#x00A0;throwErrnoIfMinus1,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;throwErrnoIfMinus1_,&#x00A0;&#x00A0;throwErrnoIfMinus1Retry,&#x00A0;&#x00A0;throwErrnoIfMinus1Retry_,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;throwErrnoIfNull,&#x00A0;&#x00A0;throwErrnoIfNullRetry,&#x00A0;&#x00A0;throwErrnoIfRetryMayBlock,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;throwErrnoIfRetryMayBlock_,&#x00A0;&#x00A0;throwErrnoIfMinus1RetryMayBlock,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;throwErrnoIfMinus1RetryMayBlock_,&#x00A0;&#x00A0;throwErrnoIfNullRetryMayBlock,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;throwErrnoPath,&#x00A0;&#x00A0;throwErrnoPathIf,&#x00A0;&#x00A0;throwErrnoPathIf_,
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;throwErrnoPathIfNull,&#x00A0;&#x00A0;throwErrnoPathIfMinus1,&#x00A0;&#x00A0;throwErrnoPathIfMinus1_
&#x00A0;<br />&#x00A0;&#x00A0;)&#x00A0;where
</div>
<p class="noindent"></div>
<p class="noindent"> The module <span
class="pcrr7t-">Foreign.C.Error </span>facilitates C-specific error handling of <span
class="pcrr7t-">errno</span>.
<h3 class="sectionHead"><span class="titlemark">26.1 </span> <a
id="x34-26500026.1"></a>Haskell representations of <span
class="pcrr7t-">errno </span>values </h3>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-393" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-393-1g"><col
id="TBL-393-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-393-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-393-1-1"
class="td11"><span
class="pcrb7t-">newtype</span><span
class="pcrb7t-">&#x00A0;Errno </span></td>
</tr></table> </div> <dd class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"><table id="TBL-394" class="tabulary"
cellspacing="0" cellpadding="0"
><colgroup id="TBL-394-1g"><col
id="TBL-394-1" /><col
id="TBL-394-2" /><col
id="TBL-394-3" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-394-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-394-1-1"
class="td11"> <span
class="pcrb7t-">= </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-394-1-2"
class="td11"> <span
class="pcrb7t-">Errno CInt </span></td><td style="white-space:wrap; text-align:left;" id="TBL-394-1-3"
class="td11"> </td></tr><tr
style="vertical-align:baseline;" id="TBL-394-2-"><td style="white-space:nowrap; text-align:left;" id="TBL-394-2-1"
class="td11"> </td></tr></table>
</div>
<p class="noindent"> Haskell representation for <span
class="pcrr7t-">errno </span>values. The implementation is deliberately exposed, to allow users to add
their own definitions of <span
class="pcrr7t-">Errno</span><a
id="dx34-265001"></a> values.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-395" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-395-1g"><col
id="TBL-395-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-395-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-395-1-1"
class="td11"><span
class="pcrb7t-">instance</span><span
class="pcrb7t-">&#x00A0;Eq</span><span
class="pcrb7t-">&#x00A0;Errno </span></td>
</tr></table> </div> <dd class="haddockdesc">
</dl>
<p class="noindent">
<h4 class="subsectionHead"><span class="titlemark">26.1.1 </span> <a
id="x34-26600026.1.1"></a>Common <span
class="pcrr7t-">errno </span>symbols </h4>
<p class="noindent"> Different operating systems and/or C libraries often support different values of <span
class="pcrr7t-">errno</span>. This module defines
the common values, but due to the open definition of <span
class="pcrr7t-">Errno</span><a
id="dx34-266001"></a> users may add definitions which are not
predefined.
<p class="noindent">
<dl> <dt class="haddockdesc">
<span
class="pcrb7t-">eOK</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">e2BIG</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eACCES</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eADDRINUSE</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eADDRNOTAVAIL</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eADV</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eAFNOSUPPORT</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eAGAIN</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eALREADY</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eBADF</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eBADMSG</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eBADRPC</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eBUSY</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eCHILD</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eCOMM</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eCONNABORTED</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eCONNREFUSED</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eCONNRESET</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eDEADLK</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eDESTADDRREQ</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eDIRTY</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eDOM</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eDQUOT</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eEXIST</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eFAULT</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eFBIG</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eFTYPE</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eHOSTDOWN</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eHOSTUNREACH</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eIDRM</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eILSEQ</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eINPROGRESS</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eINTR</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eINVAL</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eIO</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eISCONN</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eISDIR</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eLOOP</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eMFILE</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eMLINK</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eMSGSIZE</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eMULTIHOP</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNAMETOOLONG</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNETDOWN</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNETRESET</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNETUNREACH</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNFILE</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOBUFS</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNODATA</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNODEV</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOENT</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOEXEC</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOLCK</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOLINK</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOMEM</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOMSG</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNONET</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOPROTOOPT</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOSPC</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOSR</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOSTR</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOSYS</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOTBLK</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOTCONN</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOTDIR</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOTEMPTY</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOTSOCK</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNOTTY</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eNXIO</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eOPNOTSUPP</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">ePERM</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">ePFNOSUPPORT</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">ePIPE</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">ePROCLIM</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">ePROCUNAVAIL</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">ePROGMISMATCH</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">ePROGUNAVAIL</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">ePROTO</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">ePROTONOSUPPORT</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">ePROTOTYPE</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eRANGE</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eREMCHG</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eREMOTE</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eROFS</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eRPCMISMATCH</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eRREMOTE</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eSHUTDOWN</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eSOCKTNOSUPPORT</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eSPIPE</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eSRCH</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eSRMNT</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eSTALE</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eTIME</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eTIMEDOUT</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eTOOMANYREFS</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eTXTBSY</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eUSERS</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eWOULDBLOCK</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc">
<dt class="haddockdesc">
<span
class="pcrb7t-">eXDEV</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span> <dd class="haddockdesc"></dl>
<p class="noindent">
<h4 class="subsectionHead"><span class="titlemark">26.1.2 </span> <a
id="x34-26700026.1.2"></a><span
class="pcrr7t-">Errno </span>functions </h4>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-396" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-396-1g"><col
id="TBL-396-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-396-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-396-1-1"
class="td11"><span
class="pcrb7t-">isValidErrno</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Errno</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;Bool </span></td></tr></table> </div> <dd class="haddockdesc">
Yield <span
class="pcrr7t-">True</span><a
id="dx34-267001"></a> if the given <span
class="pcrr7t-">Errno</span><a
id="dx34-267002"></a> value is valid on the system. This implies that the <span
class="pcrr7t-">Eq</span><a
id="dx34-267003"></a> instance of
<span
class="pcrr7t-">Errno</span><a
id="dx34-267004"></a> is also system dependent as it is only defined for valid values of <span
class="pcrr7t-">Errno</span><a
id="dx34-267005"></a>.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-397" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-397-1g"><col
id="TBL-397-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-397-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-397-1-1"
class="td11"><span
class="pcrb7t-">getErrno</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;Errno </span></td>
</tr></table> </div> <dd class="haddockdesc">
Get the current value of <span
class="pcrr7t-">errno </span>in the current thread.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-398" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-398-1g"><col
id="TBL-398-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-398-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-398-1-1"
class="td11"><span
class="pcrb7t-">resetErrno</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;() </span></td>
</tr></table> </div> <dd class="haddockdesc">
Reset the current thread&#8217;s <span
class="pcrr7t-">errno </span>value to <span
class="pcrr7t-">eOK</span><a
id="dx34-267006"></a>.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-399" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-399-1g"><col
id="TBL-399-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-399-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-399-1-1"
class="td11"><span
class="pcrb7t-">errnoToIOError </span></td></tr></table> </div> <dd class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"><table id="TBL-400" class="tabulary"
cellspacing="0" cellpadding="0"
><colgroup id="TBL-400-1g"><col
id="TBL-400-1" /><col
id="TBL-400-2" /><col
id="TBL-400-3" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-400-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-400-1-1"
class="td11"> <span
class="pcrb7t-">:: </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-400-1-2"
class="td11"> <span
class="pcrb7t-">String </span></td><td style="white-space:wrap; text-align:left;" id="TBL-400-1-3"
class="td11"> the location where the error occurred </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-400-2-"><td style="white-space:nowrap; text-align:left;" id="TBL-400-2-1"
class="td11"> <span
class="pcrb7t-">-&#x003E; </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-400-2-2"
class="td11"> <span
class="pcrb7t-">Errno </span></td><td style="white-space:wrap; text-align:left;" id="TBL-400-2-3"
class="td11"> the error number </td></tr><tr
style="vertical-align:baseline;" id="TBL-400-3-"><td style="white-space:nowrap; text-align:left;" id="TBL-400-3-1"
class="td11"> <span
class="pcrb7t-">-&#x003E; </span></td> <td style="white-space:nowrap; text-align:left;" id="TBL-400-3-2"
class="td11"> <span
class="pcrb7t-">Maybe Handle </span></td> <td style="white-space:wrap; text-align:left;" id="TBL-400-3-3"
class="td11"> optional handle associated with the error</td>
</tr><tr
style="vertical-align:baseline;" id="TBL-400-4-"><td style="white-space:nowrap; text-align:left;" id="TBL-400-4-1"
class="td11"> <span
class="pcrb7t-">-&#x003E; </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-400-4-2"
class="td11"> <span
class="pcrb7t-">Maybe String </span></td><td style="white-space:wrap; text-align:left;" id="TBL-400-4-3"
class="td11"> optional filename associated with the error </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-400-5-"><td style="white-space:nowrap; text-align:left;" id="TBL-400-5-1"
class="td11"> <span
class="pcrb7t-">-&#x003E; </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-400-5-2"
class="td11"> <span
class="pcrb7t-">IOError </span></td><td style="white-space:wrap; text-align:left;" id="TBL-400-5-3"
class="td11"> </td></tr><tr
style="vertical-align:baseline;" id="TBL-400-6-"><td style="white-space:nowrap; text-align:left;" id="TBL-400-6-1"
class="td11"> </td>
</tr></table></div>
<p class="noindent"> Construct an <span
class="pcrr7t-">IOError</span><a
id="dx34-267007"></a> based on the given <span
class="pcrr7t-">Errno</span><a
id="dx34-267008"></a> value. The optional information can be used to improve
the accuracy of error messages.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-401" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-401-1g"><col
id="TBL-401-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-401-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-401-1-1"
class="td11"><span
class="pcrb7t-">throwErrno </span></td></tr></table> </div> <dd class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"><table id="TBL-402" class="tabulary"
cellspacing="0" cellpadding="0"
><colgroup id="TBL-402-1g"><col
id="TBL-402-1" /><col
id="TBL-402-2" /><col
id="TBL-402-3" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-402-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-402-1-1"
class="td11"> <span
class="pcrb7t-">:: </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-402-1-2"
class="td11"> <span
class="pcrb7t-">String </span></td><td style="white-space:wrap; text-align:left;" id="TBL-402-1-3"
class="td11"> textual description of the error location </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-402-2-"><td style="white-space:nowrap; text-align:left;" id="TBL-402-2-1"
class="td11"> <span
class="pcrb7t-">-&#x003E; </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-402-2-2"
class="td11"> <span
class="pcrb7t-">IO a </span></td><td style="white-space:wrap; text-align:left;" id="TBL-402-2-3"
class="td11"> </td></tr><tr
style="vertical-align:baseline;" id="TBL-402-3-"><td style="white-space:nowrap; text-align:left;" id="TBL-402-3-1"
class="td11"> </td>
</tr></table></div>
<p class="noindent"> Throw an <span
class="pcrr7t-">IOError</span><a
id="dx34-267009"></a> corresponding to the current value of <span
class="pcrr7t-">getErrno</span><a
id="dx34-267010"></a>.
</dl>
<p class="noindent">
<h4 class="subsectionHead"><span class="titlemark">26.1.3 </span> <a
id="x34-26800026.1.3"></a>Guards for IO operations that may fail </h4>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-403" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-403-1g"><col
id="TBL-403-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-403-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-403-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIf </span></td></tr></table> </div> <dd class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"><table id="TBL-404" class="tabulary"
cellspacing="0" cellpadding="0"
><colgroup id="TBL-404-1g"><col
id="TBL-404-1" /><col
id="TBL-404-2" /><col
id="TBL-404-3" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-404-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-404-1-1"
class="td11"> <span
class="pcrb7t-">:: </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-404-1-2"
class="td11"> <span
class="pcrb7t-">(a -&#x003E; Bool) </span></td><td style="white-space:wrap; text-align:left;" id="TBL-404-1-3"
class="td11"> predicate to apply to the result value of the <span
class="pcrr7t-">IO</span><a
id="dx34-268001"></a> operation </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-404-2-"><td style="white-space:nowrap; text-align:left;" id="TBL-404-2-1"
class="td11"> <span
class="pcrb7t-">-&#x003E; </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-404-2-2"
class="td11"> <span
class="pcrb7t-">String </span></td><td style="white-space:wrap; text-align:left;" id="TBL-404-2-3"
class="td11"> textual description of the location </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-404-3-"><td style="white-space:nowrap; text-align:left;" id="TBL-404-3-1"
class="td11"> <span
class="pcrb7t-">-&#x003E; </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-404-3-2"
class="td11"> <span
class="pcrb7t-">IO a </span></td><td style="white-space:wrap; text-align:left;" id="TBL-404-3-3"
class="td11"> the <span
class="pcrr7t-">IO</span><a
id="dx34-268002"></a> operation to be executed </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-404-4-"><td style="white-space:nowrap; text-align:left;" id="TBL-404-4-1"
class="td11"> <span
class="pcrb7t-">-&#x003E; </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-404-4-2"
class="td11"> <span
class="pcrb7t-">IO a </span></td><td style="white-space:wrap; text-align:left;" id="TBL-404-4-3"
class="td11"> </td></tr><tr
style="vertical-align:baseline;" id="TBL-404-5-"><td style="white-space:nowrap; text-align:left;" id="TBL-404-5-1"
class="td11"> </td>
</tr></table></div>
<p class="noindent"> Throw an <span
class="pcrr7t-">IOError</span><a
id="dx34-268003"></a> corresponding to the current value of <span
class="pcrr7t-">getErrno</span><a
id="dx34-268004"></a> if the result value of the <span
class="pcrr7t-">IO</span><a
id="dx34-268005"></a> action
meets the given predicate.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-405" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-405-1g"><col
id="TBL-405-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-405-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-405-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIf_</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;(a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;Bool)</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;String</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;() </span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrnoIf</span><a
id="dx34-268006"></a>, but discards the result of the <span
class="pcrr7t-">IO</span><a
id="dx34-268007"></a> action after error handling.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-406" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-406-1g"><col
id="TBL-406-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-406-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-406-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIfRetry</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;(a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;Bool)</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;String</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a </span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrnoIf</span><a
id="dx34-268008"></a>, but retry the <span
class="pcrr7t-">IO</span><a
id="dx34-268009"></a> action when it yields the error code <span
class="pcrr7t-">eINTR</span><a
id="dx34-268010"></a> - this amounts to the
standard retry loop for interrupted POSIX system calls.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-407" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-407-1g"><col
id="TBL-407-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-407-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-407-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIfRetry_</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;(a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;Bool)</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;String</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;() </span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrnoIfRetry</span><a
id="dx34-268011"></a>, but discards the result.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-408" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-408-1g"><col
id="TBL-408-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-408-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-408-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIfMinus1</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Num</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;=&#x003E;</span><span
class="pcrb7t-">&#x00A0;String</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a </span></td>
</tr></table> </div> <dd class="haddockdesc">
Throw an <span
class="pcrr7t-">IOError</span><a
id="dx34-268012"></a> corresponding to the current value of <span
class="pcrr7t-">getErrno</span><a
id="dx34-268013"></a> if the <span
class="pcrr7t-">IO</span><a
id="dx34-268014"></a> action returns a result
of <span
class="pcrr7t-">-1</span>.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-409" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-409-1g"><col
id="TBL-409-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-409-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-409-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIfMinus1_</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Num</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;=&#x003E;</span><span
class="pcrb7t-">&#x00A0;String</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;() </span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrnoIfMinus1</span><a
id="dx34-268015"></a>, but discards the result.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-410" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-410-1g"><col
id="TBL-410-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-410-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-410-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIfMinus1Retry</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Num</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;=&#x003E;</span><span
class="pcrb7t-">&#x00A0;String</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a </span></td>
</tr></table> </div> <dd class="haddockdesc">
Throw an <span
class="pcrr7t-">IOError</span><a
id="dx34-268016"></a> corresponding to the current value of <span
class="pcrr7t-">getErrno</span><a
id="dx34-268017"></a> if the <span
class="pcrr7t-">IO</span><a
id="dx34-268018"></a> action returns a result
of <span
class="pcrr7t-">-1</span>, but retries in case of an interrupted operation.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-411" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-411-1g"><col
id="TBL-411-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-411-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-411-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIfMinus1Retry_</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Num</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;=&#x003E;</span><span
class="pcrb7t-">&#x00A0;String</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;() </span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrnoIfMinus1</span><a
id="dx34-268019"></a>, but discards the result.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-412" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-412-1g"><col
id="TBL-412-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-412-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-412-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIfNull</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;String</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;(Ptr</span><span
class="pcrb7t-">&#x00A0;a)</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;(Ptr</span><span
class="pcrb7t-">&#x00A0;a) </span></td>
</tr></table> </div> <dd class="haddockdesc">
Throw an <span
class="pcrr7t-">IOError</span><a
id="dx34-268020"></a> corresponding to the current value of <span
class="pcrr7t-">getErrno</span><a
id="dx34-268021"></a> if the <span
class="pcrr7t-">IO</span><a
id="dx34-268022"></a> action returns
<span
class="pcrr7t-">nullPtr</span><a
id="dx34-268023"></a>.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-413" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-413-1g"><col
id="TBL-413-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-413-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-413-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIfNullRetry</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;String</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;(Ptr</span><span
class="pcrb7t-">&#x00A0;a)</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;(Ptr</span><span
class="pcrb7t-">&#x00A0;a) </span></td>
</tr></table> </div> <dd class="haddockdesc">
Throw an <span
class="pcrr7t-">IOError</span><a
id="dx34-268024"></a> corresponding to the current value of <span
class="pcrr7t-">getErrno</span><a
id="dx34-268025"></a> if the <span
class="pcrr7t-">IO</span><a
id="dx34-268026"></a> action returns
<span
class="pcrr7t-">nullPtr</span><a
id="dx34-268027"></a>, but retry in case of an interrupted operation.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-414" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-414-1g"><col
id="TBL-414-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-414-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-414-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIfRetryMayBlock </span></td>
</tr></table> </div> <dd class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"><table id="TBL-415" class="tabulary"
cellspacing="0" cellpadding="0"
><colgroup id="TBL-415-1g"><col
id="TBL-415-1" /><col
id="TBL-415-2" /><col
id="TBL-415-3" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-415-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-415-1-1"
class="td11"> <span
class="pcrb7t-">:: </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-415-1-2"
class="td11"> <span
class="pcrb7t-">(a -&#x003E; Bool) </span></td><td style="white-space:wrap; text-align:left;" id="TBL-415-1-3"
class="td11"> predicate to apply to the result value of the <span
class="pcrr7t-">IO</span><a
id="dx34-268028"></a> operation </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-415-2-"><td style="white-space:nowrap; text-align:left;" id="TBL-415-2-1"
class="td11"> <span
class="pcrb7t-">-&#x003E; </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-415-2-2"
class="td11"> <span
class="pcrb7t-">String </span></td><td style="white-space:wrap; text-align:left;" id="TBL-415-2-3"
class="td11"> textual description of the location </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-415-3-"><td style="white-space:nowrap; text-align:left;" id="TBL-415-3-1"
class="td11"> <span
class="pcrb7t-">-&#x003E; </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-415-3-2"
class="td11"> <span
class="pcrb7t-">IO a </span></td><td style="white-space:wrap; text-align:left;" id="TBL-415-3-3"
class="td11"> the <span
class="pcrr7t-">IO</span><a
id="dx34-268029"></a> operation to be executed </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-415-4-"><td style="white-space:nowrap; text-align:left;" id="TBL-415-4-1"
class="td11"> <span
class="pcrb7t-">-&#x003E; </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-415-4-2"
class="td11"> <span
class="pcrb7t-">IO b </span></td><td style="white-space:wrap; text-align:left;" id="TBL-415-4-3"
class="td11"> action to execute before retrying if an immediate retry would block </td>
</tr><tr
style="vertical-align:baseline;" id="TBL-415-5-"><td style="white-space:nowrap; text-align:left;" id="TBL-415-5-1"
class="td11"> <span
class="pcrb7t-">-&#x003E; </span></td><td style="white-space:nowrap; text-align:left;" id="TBL-415-5-2"
class="td11"> <span
class="pcrb7t-">IO a </span></td><td style="white-space:wrap; text-align:left;" id="TBL-415-5-3"
class="td11"> </td></tr><tr
style="vertical-align:baseline;" id="TBL-415-6-"><td style="white-space:nowrap; text-align:left;" id="TBL-415-6-1"
class="td11"> </td>
</tr></table></div>
<p class="noindent"> as <span
class="pcrr7t-">throwErrnoIfRetry</span><a
id="dx34-268030"></a>, but additionally if the operation yields the error code <span
class="pcrr7t-">eAGAIN</span><a
id="dx34-268031"></a> or
<span
class="pcrr7t-">eWOULDBLOCK</span><a
id="dx34-268032"></a>, an alternative action is executed before retrying.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-416" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-416-1g"><col
id="TBL-416-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-416-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-416-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIfRetryMayBlock_</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;(a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;Bool) </span></td>
</tr><tr
style="vertical-align:baseline;" id="TBL-416-2-"><td style="white-space:nowrap; text-align:left;" id="TBL-416-2-1"
class="td11"><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;String</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;b</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;() </span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrnoIfRetryMayBlock</span><a
id="dx34-268033"></a>, but discards the result.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-417" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-417-1g"><col
id="TBL-417-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-417-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-417-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIfMinus1RetryMayBlock</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Num</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;=&#x003E;</span><span
class="pcrb7t-">&#x00A0;String </span></td></tr><tr
style="vertical-align:baseline;" id="TBL-417-2-"><td style="white-space:nowrap; text-align:left;" id="TBL-417-2-1"
class="td11"><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;b</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrnoIfMinus1Retry</span><a
id="dx34-268034"></a>, but checks for operations that would block.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-418" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-418-1g"><col
id="TBL-418-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-418-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-418-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIfMinus1RetryMayBlock_</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Num</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;=&#x003E;</span><span
class="pcrb7t-">&#x00A0;String </span></td>
</tr><tr
style="vertical-align:baseline;" id="TBL-418-2-"><td style="white-space:nowrap; text-align:left;" id="TBL-418-2-1"
class="td11"><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;b</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;() </span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrnoIfMinus1RetryMayBlock</span><a
id="dx34-268035"></a>, but discards the result.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-419" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-419-1g"><col
id="TBL-419-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-419-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-419-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoIfNullRetryMayBlock</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;String </span></td>
</tr><tr
style="vertical-align:baseline;" id="TBL-419-2-"><td style="white-space:nowrap; text-align:left;" id="TBL-419-2-1"
class="td11"><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;(Ptr</span><span
class="pcrb7t-">&#x00A0;a)</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;b</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;(Ptr</span><span
class="pcrb7t-">&#x00A0;a) </span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrnoIfNullRetry</span><a
id="dx34-268036"></a>, but checks for operations that would block.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-420" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-420-1g"><col
id="TBL-420-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-420-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-420-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoPath</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;String</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;FilePath</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a </span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrno</span><a
id="dx34-268037"></a>, but exceptions include the given path when appropriate.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-421" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-421-1g"><col
id="TBL-421-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-421-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-421-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoPathIf</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;(a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;Bool) </span></td>
</tr><tr
style="vertical-align:baseline;" id="TBL-421-2-"><td style="white-space:nowrap; text-align:left;" id="TBL-421-2-1"
class="td11"><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;String</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;FilePath</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a </span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrnoIf</span><a
id="dx34-268038"></a>, but exceptions include the given path when appropriate.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-422" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-422-1g"><col
id="TBL-422-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-422-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-422-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoPathIf_</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;(a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;Bool) </span></td>
</tr><tr
style="vertical-align:baseline;" id="TBL-422-2-"><td style="white-space:nowrap; text-align:left;" id="TBL-422-2-1"
class="td11"><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;String</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;FilePath</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;() </span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrnoIf_</span><a
id="dx34-268039"></a>, but exceptions include the given path when appropriate.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-423" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-423-1g"><col
id="TBL-423-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-423-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-423-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoPathIfNull</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;String </span></td>
</tr><tr
style="vertical-align:baseline;" id="TBL-423-2-"><td style="white-space:nowrap; text-align:left;" id="TBL-423-2-1"
class="td11"><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;FilePath</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;(Ptr</span><span
class="pcrb7t-">&#x00A0;a)</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;(Ptr</span><span
class="pcrb7t-">&#x00A0;a) </span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrnoIfNull</span><a
id="dx34-268040"></a>, but exceptions include the given path when appropriate.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-424" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-424-1g"><col
id="TBL-424-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-424-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-424-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoPathIfMinus1</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Num</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;=&#x003E;</span><span
class="pcrb7t-">&#x00A0;String </span></td></tr><tr
style="vertical-align:baseline;" id="TBL-424-2-"><td style="white-space:nowrap; text-align:left;" id="TBL-424-2-1"
class="td11"><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;FilePath</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrnoIfMinus1</span><a
id="dx34-268041"></a>, but exceptions include the given path when appropriate.
</dl>
<p class="noindent">
<dl> <dt class="haddockdesc">
<!--tex4ht:inline--><div class="tabular"> <table id="TBL-425" class="tabular"
cellspacing="0" cellpadding="0" rules="groups"
><colgroup id="TBL-425-1g"><col
id="TBL-425-1" /></colgroup><tr
style="vertical-align:baseline;" id="TBL-425-1-"><td style="white-space:nowrap; text-align:left;" id="TBL-425-1-1"
class="td11"><span
class="pcrb7t-">throwErrnoPathIfMinus1_</span><span
class="pcrb7t-">&#x00A0;::</span><span
class="pcrb7t-">&#x00A0;Num</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;=&#x003E;</span><span
class="pcrb7t-">&#x00A0;String </span></td>
</tr><tr
style="vertical-align:baseline;" id="TBL-425-2-"><td style="white-space:nowrap; text-align:left;" id="TBL-425-2-1"
class="td11"><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;FilePath</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;a</span><span
class="pcrb7t-">&#x00A0;-&#x003E;</span><span
class="pcrb7t-">&#x00A0;IO</span><span
class="pcrb7t-">&#x00A0;() </span></td>
</tr></table> </div> <dd class="haddockdesc">
as <span
class="pcrr7t-">throwErrnoIfMinus1_</span><a
id="dx34-268042"></a>, but exceptions include the given path when appropriate.
</dl>
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