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Viewing changes to tools/sfio/Sfio_dc/sfdcslow.c

  • Committer: Bazaar Package Importer
  • Author(s): Stephen M Moraco
  • Date: 2002-02-05 18:52:12 UTC
  • Revision ID: james.westby@ubuntu.com-20020205185212-8i04c70te00rc40y
Tags: upstream-1.7.16
Import upstream version 1.7.16

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tools/sfio/Sfio_dc/sfdcslow.c
 
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#include "sfdchdr.h"
 
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/*      Make a stream op return immediately on interrupts.
 
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**      This is useful on slow streams (hence the name).
 
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**
 
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**      Written by Glenn Fowler (03/18/1998).
 
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*/
 
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#if __STD_C
 
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static int slowexcept(Sfio_t* f, int type, Void_t* v, Sfdisc_t* disc)
 
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#else
 
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static int slowexcept(f, type, v, disc)
 
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Sfio_t*         f;
 
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int             type;
 
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Void_t*         v;
 
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Sfdisc_t*       disc;
 
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#endif
 
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{
 
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        NOTUSED(f);
 
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        NOTUSED(v);
 
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        NOTUSED(disc);
 
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        switch (type)
 
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        {
 
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        case SF_FINAL:
 
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        case SF_DPOP:
 
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                free(disc);
 
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                break;
 
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        case SF_READ:
 
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        case SF_WRITE:
 
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                if (errno == EINTR)
 
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                        return(-1);
 
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                break;
 
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        }
 
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        return(0);
 
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}
 
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#if __STD_C
 
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int sfdcslow(Sfio_t* f)
 
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#else
 
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int sfdcslow(f)
 
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Sfio_t* f;
 
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#endif
 
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{
 
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        Sfdisc_t*       disc;
 
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        if(!(disc = (Sfdisc_t*)malloc(sizeof(Sfdisc_t))) )
 
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                return(-1);
 
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        disc->readf = NIL(Sfread_f);
 
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        disc->writef = NIL(Sfwrite_f);
 
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        disc->seekf = NIL(Sfseek_f);
 
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        disc->exceptf = slowexcept;
 
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        if(sfdisc(f,disc) != disc)
 
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        {       free(disc);
 
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                return(-1);
 
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        }
 
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        return(0);
 
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}