Plan 9 from Bell Labs’s /usr/web/sources/contrib/jas/src/dsPIC33F/lib9p/util.c

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
Download the Plan 9 distribution.


#include <u.h>
#include <libc.h>
#include <fcall.h>
#include "dat.h"
#include "9p.h"

void
readbuf(Req *r, void *s, long n)
{
	r->ofcall.count = r->ifcall.count;
	if(r->ifcall.offset >= n){
		r->ofcall.count = 0;
		return;
	}
	if(r->ifcall.offset+r->ofcall.count > n)
		r->ofcall.count = n - r->ifcall.offset;
	memmove(r->ofcall.data, (char*)s+r->ifcall.offset, r->ofcall.count);
}

void
readstr(Req *r, char *s)
{
	if(s == nil)
		r->ofcall.count = 0;
	else
		readbuf(r, s, strlen(s));
}

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