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#include <u.h>
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#include <libc.h>
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#include <auth.h>
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#include <fcall.h>
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#include <thread.h>
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#include "9p.h"
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void
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readbuf(Req *r, void *s, long n)
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{
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	r->ofcall.count = r->ifcall.count;
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	if(r->ifcall.offset >= n){
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		r->ofcall.count = 0;
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		return;
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	}
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	if(r->ifcall.offset+r->ofcall.count > n)
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		r->ofcall.count = n - r->ifcall.offset;
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	memmove(r->ofcall.data, (char*)s+r->ifcall.offset, r->ofcall.count);
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}
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void
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readstr(Req *r, char *s)
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{
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	readbuf(r, s, strlen(s));
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}