remove sprint from ip

Reference: /n/atom/patch/applied/ipnosprint
Date: Sun Aug 16 18:58:20 CES 2015
Signed-off-by: quanstro@quanstro.net

--- /sys/src/nix/ip/arp.c	Sun Aug 16 18:57:47 2015
+++ /sys/src/nix/ip/arp.c	Sun Aug 16 18:57:48 2015
@@ -213,10 +213,10 @@
 		v4tov6(v6ip, ip);
 		ip = v6ip;
 	}
+	hash = haship(ip);
 
 	qlock(arp);
 	type = ifc->m;
-	hash = haship(ip);
 	for(a = arp->hash[hash]; a; a = a->hash){
 		if(memcmp(ip, a->ip, sizeof(a->ip)) == 0)
 		if(type == a->type)
@@ -519,13 +519,11 @@
 	Alinelen=	90,
 };
 
-char *aformat = "%-6.6s %-8.8s %-40.40I %-32.32s\n";
-
 static void
 convmac(char *p, uchar *mac, int n)
 {
 	while(n-- > 0)
-		p += sprint(p, "%2.2ux", *mac++);
+		p += snprint(p, 3, "%2.2ux", *mac++);
 }
 
 int
@@ -552,7 +550,8 @@
 		len--;
 		qlock(arp);
 		convmac(mac, a->mac, a->type->maclen);
-		n += sprint(p+n, aformat, a->type->name, arpstate[a->state], a->ip, mac);
+		n += snprint(p+n, Alinelen+1, "%-6.6s %-8.8s %-40.40I %-32.32s\n",
+			a->type->name, arpstate[a->state], a->ip, mac);
 		qunlock(arp);
 	}
 
--- /sys/src/nix/ip/chandial.c	Sun Aug 16 18:57:50 2015
+++ /sys/src/nix/ip/chandial.c	Sun Aug 16 18:57:51 2015
@@ -66,7 +66,7 @@
 	name[n] = 0;
 	for(p = name; *p == ' '; p++)
 		;
-	sprint(name, "%lud", strtoul(p, 0, 0));
+	snprint(name, sizeof name, "%lud", strtoul(p, 0, 0));
 	p = strrchr(clone, '/');
 	*p = 0;
 	if(ds->dir)
--- /sys/src/nix/ip/icmp6.c	Sun Aug 16 18:57:54 2015
+++ /sys/src/nix/ip/icmp6.c	Sun Aug 16 18:57:56 2015
@@ -757,7 +757,7 @@
 
 	case TimeExceedV6:
 		if(p->code == 0){
-			sprint(m2, "ttl exceeded at %I", p->src);
+			snprint(m2, sizeof m2, "ttl exceeded at %I", p->src);
 
 			bp->rp += IPICMPSZ;
 			if(blocklen(bp) < 8){
--- /sys/src/nix/ip/il.c	Sun Aug 16 18:57:59 2015
+++ /sys/src/nix/ip/il.c	Sun Aug 16 18:58:00 2015
@@ -1247,7 +1247,7 @@
 	if(ipriv->ackprocstarted == 0){
 		qlock(&ipriv->apl);
 		if(ipriv->ackprocstarted == 0){
-			sprint(kpname, "#I%dilack", c->p->f->dev);
+			snprint(kpname, sizeof kpname, "#I%dilack", c->p->f->dev);
 			kproc(kpname, ilackproc, c->p);
 			ipriv->ackprocstarted = 1;
 		}
--- /sys/src/nix/ip/iproute.c	Sun Aug 16 18:58:03 2015
+++ /sys/src/nix/ip/iproute.c	Sun Aug 16 18:58:04 2015
@@ -651,7 +651,7 @@
  *  this code is not in rr to reduce stack size
  */
 static void
-sprintroute(Route *r, Routewalk *rw)
+snprintroute(Route *r, Routewalk *rw)
 {
 	int nifc, n;
 	char t[5], *iname, ifbuf[5];
@@ -731,7 +731,7 @@
 	rw.p = p;
 	rw.e = p+n;
 	rw.o = -offset;
-	rw.walk = sprintroute;
+	rw.walk = snprintroute;
 
 	ipwalkroutes(f, &rw);