1 #include <u.h>
2 #include <libc.h>
3 #include <fcall.h>
4 #include <thread.h>
5 #include "9p.h"
6 
7 void
8 readbuf(Req *r, void *s, long n)
9 {
10 	r->ofcall.count = r->ifcall.count;
11 	if(r->ifcall.offset >= n){
12 		r->ofcall.count = 0;
13 		return;
14 	}
15 	if(r->ifcall.offset+r->ofcall.count > n)
16 		r->ofcall.count = n - r->ifcall.offset;
17 	memmove(r->ofcall.data, (char*)s+r->ifcall.offset, r->ofcall.count);
18 }
19 
20 void
21 readstr(Req *r, char *s)
22 {
23 	if(s == nil)
24 		r->ofcall.count = 0;
25 	else
26 		readbuf(r, s, strlen(s));
27 }