[src/trunk]: src/libexec/comsat realloc mistake. from openbsd

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

details:   https://anonhg.NetBSD.org/src/rev/1b78c3e6917b
branches:  trunk
changeset: 552106:1b78c3e6917b
user:      itojun <itojun%NetBSD.org@localhost>
date:      Fri Sep 19 05:33:15 2003 +0000

description:
realloc mistake. from openbsd

diffstat:

 libexec/comsat/comsat.c |  11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diffs (42 lines):

diff -r a63823d77255 -r 1b78c3e6917b libexec/comsat/comsat.c
--- a/libexec/comsat/comsat.c   Fri Sep 19 05:31:11 2003 +0000
+++ b/libexec/comsat/comsat.c   Fri Sep 19 05:33:15 2003 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: comsat.c,v 1.25 2003/08/07 09:46:37 agc Exp $  */
+/*     $NetBSD: comsat.c,v 1.26 2003/09/19 05:33:15 itojun Exp $       */
 
 /*
  * Copyright (c) 1980, 1993
@@ -36,7 +36,7 @@
 #if 0
 static char sccsid[] = "from: @(#)comsat.c     8.1 (Berkeley) 6/4/93";
 #else
-__RCSID("$NetBSD: comsat.c,v 1.25 2003/08/07 09:46:37 agc Exp $");
+__RCSID("$NetBSD: comsat.c,v 1.26 2003/09/19 05:33:15 itojun Exp $");
 #endif
 #endif /* not lint */
 
@@ -159,6 +159,7 @@
        static u_int utmpsize;          /* last malloced size for utmp */
        static u_int utmpmtime;         /* last modification time for utmp */
        struct stat statbf;
+       struct utmp *u;
 
        if (time(NULL) - lastmsgtime >= MAXIDLE)
                exit(0);
@@ -167,11 +168,13 @@
        if (statbf.st_mtime > utmpmtime) {
                utmpmtime = statbf.st_mtime;
                if (statbf.st_size > utmpsize) {
-                       utmpsize = statbf.st_size + 10 * sizeof(struct utmp);
-                       if ((utmp = realloc(utmp, utmpsize)) == NULL) {
+                       if ((u = realloc(utmp,
+                           statbf.st_size + 10 * sizeof(struct utmp))) == NULL) {
                                syslog(LOG_ERR, "%s", strerror(errno));
                                exit(1);
                        }
+                       utmp = u;
+                       utmpsize = statbf.st_size + 10 * sizeof(struct utmp);
                }
                (void)lseek(uf, (off_t)0, SEEK_SET);
                nutmp = read(uf, utmp, (int)statbf.st_size)/sizeof(struct utmp);