[src/trunk]: src/sys/arch simplify snprintf.

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d316f1616038
branches:  trunk
changeset: 794839:d316f1616038
user:      christos <christos%NetBSD.org@localhost>
date:      Wed Mar 26 15:55:31 2014 +0000

description:
simplify snprintf.

diffstat:

 sys/arch/sparc/sparc/autoconf.c     |  31 ++++++++++++++++---------------
 sys/arch/sparc64/sparc64/autoconf.c |   8 +++-----
 2 files changed, 19 insertions(+), 20 deletions(-)

diffs (134 lines):

diff -r b599a8bba619 -r d316f1616038 sys/arch/sparc/sparc/autoconf.c
--- a/sys/arch/sparc/sparc/autoconf.c   Wed Mar 26 15:47:00 2014 +0000
+++ b/sys/arch/sparc/sparc/autoconf.c   Wed Mar 26 15:55:31 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: autoconf.c,v 1.251 2013/04/16 06:57:06 jdc Exp $ */
+/*     $NetBSD: autoconf.c,v 1.252 2014/03/26 15:55:31 christos Exp $ */
 
 /*
  * Copyright (c) 1996
@@ -48,7 +48,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.251 2013/04/16 06:57:06 jdc Exp $");
+__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.252 2014/03/26 15:55:31 christos Exp $");
 
 #include "opt_ddb.h"
 #include "opt_kgdb.h"
@@ -673,9 +673,11 @@
                        } else {
                                BP_APPEND(bp, "vme", -1, 0, 0);
                        }
-                       sprintf(tmpname,"x%cc", cp[1]); /* e.g. `xdc' */
+                       /* e.g. `xdc' */
+                       snprintf(tmpname, sizeof(tmpname), "x%cc", cp[1]);
                        BP_APPEND(bp, tmpname, -1, v0val[0], 0);
-                       sprintf(tmpname,"x%c", cp[1]); /* e.g. `xd' */
+                       /* e.g. `xd' */
+                       snprintf(tmpname, sizeof(tmpname), "x%c", cp[1]);
                        BP_APPEND(bp, tmpname, v0val[1], v0val[2], 0);
                        return;
                }
@@ -686,7 +688,7 @@
                 */
                if ((cp[0] == 'i' || cp[0] == 'l') && cp[1] == 'e')  {
                        BP_APPEND(bp, "obio", -1, 0, 0);
-                       sprintf(tmpname,"%c%c", cp[0], cp[1]);
+                       snprintf(tmpname, sizeof(tmpname), "%c%c", cp[0], cp[1]);
                        BP_APPEND(bp, tmpname, -1, 0, 0);
                        return;
                }
@@ -735,7 +737,8 @@
                                target = v0val[1] >> 2; /* old format */
                                lun    = v0val[1] & 0x3;
                        }
-                       sprintf(tmpname, "%c%c", cp[0], cp[1]);
+                       snprintf(tmpname, sizeof(tmpname),
+                           "%c%c", cp[0], cp[1]);
                        BP_APPEND(bp, tmpname, target, lun, v0val[2]);
                        return;
                }
@@ -786,9 +789,9 @@
                BP_APPEND(bp, "sbus", -1, 0, 0);
                BP_APPEND(bp, "esp", -1, v0val[0], 0);
                if (cp[1] == 'r')
-                       sprintf(tmpname, "cd"); /* netbsd uses 'cd', not 'sr'*/
+                       snprintf(tmpname, sizeof(tmpname), "cd"); /* netbsd uses 'cd', not 'sr'*/
                else
-                       sprintf(tmpname,"%c%c", cp[0], cp[1]);
+                       snprintf(tmpname, sizeof(tmpname), "%c%c", cp[0], cp[1]);
                /* XXX - is TARGET/LUN encoded in v0val[1]? */
                target = v0val[1];
                lun = 0;
@@ -1030,17 +1033,15 @@
 char *
 clockfreq(int freq)
 {
-       char *p;
        static char buf[10];
+       size_t len;
 
        freq /= 1000;
-       sprintf(buf, "%d", freq / 1000);
+       len = snprintf(buf, sizeof(buf), "%d", freq / 1000);
        freq %= 1000;
        if (freq) {
                freq += 1000;   /* now in 1000..1999 */
-               p = buf + strlen(buf);
-               sprintf(p, "%d", freq);
-               *p = '.';       /* now buf = %d.%3d */
+               snprintf(buf + len, sizeof(buf) - len, ".%d", freq);
        }
        return (buf);
 }
@@ -1482,11 +1483,11 @@
         * correct cutoff point is unknown, as yet; we use 2.9 here.
         */
        if (prom_version() < 2 || prom_revision() < 0x00020009)
-               sprintf(buf,
+               snprintf(buf, sizeof(buf),
                    "' line# >body >user %lx ! ' column# >body >user %lx !",
                    (u_long)rowp, (u_long)colp);
        else
-               sprintf(buf,
+               snprintf(buf, sizeof(buf),
                    "stdout @ is my-self addr line# %lx ! addr column# %lx !",
                    (u_long)rowp, (u_long)colp);
        *rowp = *colp = NULL;
diff -r b599a8bba619 -r d316f1616038 sys/arch/sparc64/sparc64/autoconf.c
--- a/sys/arch/sparc64/sparc64/autoconf.c       Wed Mar 26 15:47:00 2014 +0000
+++ b/sys/arch/sparc64/sparc64/autoconf.c       Wed Mar 26 15:55:31 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: autoconf.c,v 1.194 2014/03/26 08:40:58 christos Exp $ */
+/*     $NetBSD: autoconf.c,v 1.195 2014/03/26 15:55:31 christos Exp $ */
 
 /*
  * Copyright (c) 1996
@@ -48,7 +48,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.194 2014/03/26 08:40:58 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.195 2014/03/26 15:55:31 christos Exp $");
 
 #include "opt_ddb.h"
 #include "opt_kgdb.h"
@@ -510,7 +510,6 @@
 char *
 clockfreq(long freq)
 {
-       char *p;
        static char sbuf[10];
        size_t len;
 
@@ -519,8 +518,7 @@
        freq %= 1000;
        if (freq) {
                freq += 1000;   /* now in 1000..1999 */
-               snprintf(sbuf + len, sizeof(sbuf) - len, "%ld", freq);
-               *p = '.';       /* now sbuf = %d.%3d */
+               snprintf(sbuf + len, sizeof(sbuf) - len, ".%ld", freq);
        }
        return (sbuf);
 }