This is the patch to remove sprint from the pc sources.

Reference: /n/sources/patch/saved/remove-sprint-pc
Date: Fri Feb 25 22:54:41 CET 2011
Signed-off-by: 20h@r-36.net

--- /sys/src/9/pc/trap.c	Fri Feb 25 22:47:51 2011
+++ /sys/src/9/pc/trap.c	Fri Feb 25 22:47:47 2011
@@ -363,7 +363,7 @@
 	}
 	else if(vno < nelem(excname) && user){
 		spllo();
-		sprint(buf, "sys: trap: %s", excname[vno]);
+		snprint(buf, sizeof(buf), "sys: trap: %s", excname[vno]);
 		postnote(up, 1, buf, NDebug);
 	}
 	else if(vno >= VectorPIC && vno != VectorSYSCALL){
@@ -591,7 +591,7 @@
 		panic("kernel bpt");
 	/* restore pc to instruction that caused the trap */
 	ureg->pc--;
-	sprint(buf, "sys: breakpoint");
+	snprint(buf, sizeof(buf), "sys: breakpoint");
 	postnote(up, 1, buf, NDebug);
 }
 
@@ -641,7 +641,7 @@
 		}
 		checkpages();
 		checkfault(addr, ureg->pc);
-		sprint(buf, "sys: trap: fault %s addr=0x%lux",
+		snprint(buf, sizeof(buf), "sys: trap: fault %s addr=0x%lux",
 			read ? "read" : "write", addr);
 		postnote(up, 1, buf, NDebug);
 	}
@@ -806,7 +806,7 @@
 		l = strlen(n->msg);
 		if(l > ERRMAX-15)	/* " pc=0x12345678\0" */
 			l = ERRMAX-15;
-		sprint(n->msg+l, " pc=0x%.8lux", ureg->pc);
+		snprint(n->msg+l, sizeof(n->msg)-l, " pc=0x%.8lux", ureg->pc);
 	}
 
 	if(n->flag!=NUser && (up->notified || up->notify==0)){
--- /sys/src/9/pc/main.c	Fri Feb 25 22:48:01 2011
+++ /sys/src/9/pc/main.c	Fri Feb 25 22:47:56 2011
@@ -298,10 +298,10 @@
 	cp[BOOTLINELEN-1] = 0;
 	buf[0] = 0;
 	if(strncmp(cp, "fd", 2) == 0){
-		sprint(buf, "local!#f/fd%lddisk", strtol(cp+2, 0, 0));
+		snprint(buf, sizeof(buf), "local!#f/fd%lddisk", strtol(cp+2, 0, 0));
 		av[ac++] = pusharg(buf);
 	} else if(strncmp(cp, "sd", 2) == 0){
-		sprint(buf, "local!#S/sd%c%c/fs", *(cp+2), *(cp+3));
+		snprint(buf, sizeof(buf), "local!#S/sd%c%c/fs", *(cp+2), *(cp+3));
 		av[ac++] = pusharg(buf);
 	} else if(strncmp(cp, "ether", 5) == 0)
 		av[ac++] = pusharg("-n");
--- /sys/src/9/pc/devlpt.c	Fri Feb 25 22:48:08 2011
+++ /sys/src/9/pc/devlpt.c	Fri Feb 25 22:48:05 2011
@@ -74,7 +74,7 @@
 	if(qid.path < Qdata)
 		qid.path += lptbase[c->dev];
 	qid.vers = c->dev;
-	sprint(up->genbuf, "lpt%lud%s", c->dev+1, tab->name);
+	snprint(up->genbuf, sizeof(up->genbuf), "lpt%lud%s", c->dev+1, tab->name);
 	devdir(c, qid, up->genbuf, tab->length, eve, tab->perm, dp);
 	return 1;
 }
@@ -96,7 +96,7 @@
 		error(Ebadarg);
 	if(lptallocd[i-1] == 0){
 		int ecr;
-		sprint(name, "lpt%d", i-1);
+		snprint(name, sizeof(name), "lpt%d", i-1);
 		if(ioalloc(lptbase[i-1], 3, 0, name) < 0)
 			error("lpt port space in use");
 		lptallocd[i-1] = 1;
@@ -149,7 +149,7 @@
 
 	if(c->qid.path == Qdir)
 		return devdirread(c, a, n, lptdir, nelem(lptdir), lptgen);
-	size = sprint(str, "0x%2.2ux\n", inb(c->qid.path));
+	size = snprint(str, sizeof(str), "0x%2.2ux\n", inb(c->qid.path));
 	o = c->offset;
 	if(o >= size)
 		return 0;
--- /sys/src/9/pc/devlml.c	Fri Feb 25 22:48:14 2011
+++ /sys/src/9/pc/devlml.c	Fri Feb 25 22:48:11 2011
@@ -175,7 +175,7 @@
 
 		memset(&segbuf, 0, sizeof(segbuf));
 		segbuf.attr = SG_PHYSICAL;
-		sprint(name, "lml%d.mjpg", nlml);
+		snprint(name, sizeof(name), "lml%d.mjpg", nlml);
 		kstrdup(&segbuf.name, name);
 		segbuf.pa = PADDR(lml->codedata);
 		segbuf.size = Codedatasize;
@@ -186,7 +186,7 @@
 
 		memset(&segbuf, 0, sizeof(segbuf));
 		segbuf.attr = SG_PHYSICAL;
-		sprint(name, "lml%d.regs", nlml);
+		snprint(name, sizeof(name), "lml%d.regs", nlml);
 		kstrdup(&segbuf.name, name);
 		segbuf.pa = (ulong)regpa;
 		segbuf.size = pcidev->mem[0].size;
--- /sys/src/9/pc/devether.c	Fri Feb 25 22:48:25 2011
+++ /sys/src/9/pc/devether.c	Fri Feb 25 22:48:20 2011
@@ -428,16 +428,16 @@
 	if(ether->irq >= 0)
 		intrenable(ether->irq, ether->interrupt, ether, ether->tbdf, name);
 
-	i = sprint(buf, "#l%d: %s: %dMbps port 0x%luX irq %d",
+	i = snprint(buf, sizeof(buf), "#l%d: %s: %dMbps port 0x%luX irq %d",
 		ctlrno, cards[cardno].type, ether->mbps, ether->port, ether->irq);
 	if(ether->mem)
-		i += sprint(buf+i, " addr 0x%luX", ether->mem);
+		i += snprint(buf+i, sizeof(buf)-i, " addr 0x%luX", ether->mem);
 	if(ether->size)
-		i += sprint(buf+i, " size 0x%luX", ether->size);
-	i += sprint(buf+i, ": %2.2ux%2.2ux%2.2ux%2.2ux%2.2ux%2.2ux",
+		i += snprint(buf+i, sizeof(buf)-i, " size 0x%luX", ether->size);
+	i += snprint(buf+i, sizeof(buf)-i, ": %2.2ux%2.2ux%2.2ux%2.2ux%2.2ux%2.2ux",
 		ether->ea[0], ether->ea[1], ether->ea[2],
 		ether->ea[3], ether->ea[4], ether->ea[5]);
-	sprint(buf+i, "\n");
+	snprint(buf+i, sizeof(buf)-i, "\n");
 	print(buf);
 
 	/* compute log10(ether->mbps) into lg */
--- /sys/src/9/pc/devarch.c	Fri Feb 25 22:48:35 2011
+++ /sys/src/9/pc/devarch.c	Fri Feb 25 22:48:30 2011
@@ -354,6 +354,7 @@
 {
 	char *buf, *p;
 	int port;
+	long pn;
 	ushort *sp;
 	ulong *lp;
 	IOMap *m;
@@ -402,6 +403,7 @@
 	if((buf = malloc(n)) == nil)
 		error(Enomem);
 	p = buf;
+	pn = n;
 	n = n/Linelen;
 	offset = offset/Linelen;
 
@@ -409,8 +411,9 @@
 	for(m = iomap.m; n > 0 && m != nil; m = m->next){
 		if(offset-- > 0)
 			continue;
-		sprint(p, "%8lux %8lux %-12.12s\n", m->start, m->end-1, m->tag);
+		snprint(p, pn, "%8lux %8lux %-12.12s\n", m->start, m->end-1, m->tag);
 		p += Linelen;
+		pn -= Linelen;
 		n--;
 	}
 	unlock(&iomap);
@@ -706,9 +709,9 @@
 	int i;
 	char buf[128];
 
-	i = sprint(buf, "cpu%d: %dMHz ", m->machno, m->cpumhz);
+	i = snprint(buf, sizeof(buf), "cpu%d: %dMHz ", m->machno, m->cpumhz);
 	if(m->cpuidid[0])
-		i += sprint(buf+i, "%12.12s ", m->cpuidid);
+		i += snprint(buf+i, sizeof(buf)-i, "%12.12s ", m->cpuidid);
 	seprint(buf+i, buf + sizeof buf - 1,
 		"%s (cpuid: AX 0x%4.4uX DX 0x%4.4uX)\n",
 		m->cpuidtype, m->cpuidax, m->cpuiddx);