aboutsummaryrefslogtreecommitdiff
path: root/src/lib9p/util.c
blob: 912eb975138743b9f217671e4929ad9b4a1af9b5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
#include <u.h>
#include <libc.h>
#include <fcall.h>
#include <thread.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));
}