- use RESERVE_CONFIG_BUFFER and a bit of whitespace-cleanup. defconfig:

   text	   data	    bss	    dec	    hex	filename
   1307	      0	      0	   1307	    51b	util-linux/hwclock.o.oorig
   1255	      0	      0	   1255	    4e7	util-linux/hwclock.o

1 files changed, 10 insertions, 21 deletions

diff --git a/util-linux/hwclock.c b/util-linux/hwclock.c
index 126caf6..5992d84 100644
--- a/util-linux/hwclock.c
+++ b/util-linux/hwclock.c
@@ -4,20 +4,7 @@
  *
  * Copyright (C) 2002 Robert Griebl <griebl@gmx.de>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
 */
 
 
@@ -70,7 +57,7 @@ static time_t read_rtc(int utc)
 	memset ( &tm, 0, sizeof( struct tm ));
 	if ( ioctl ( rtc, RTC_RD_TIME, &tm ) < 0 )
 		bb_perror_msg_and_die ( "Could not read time from RTC" );
-	tm. tm_isdst = -1; // not known
+	tm.tm_isdst = -1; /* not known */
 
 	close ( rtc );
 
@@ -103,7 +90,7 @@ static void write_rtc(time_t t, int utc)
 	}
 
 	tm = *( utc ? gmtime ( &t ) : localtime ( &t ));
-	tm. tm_isdst = 0;
+	tm.tm_isdst = 0;
 
 	if ( ioctl ( rtc, RTC_SET_TIME, &tm ) < 0 )
 		bb_perror_msg_and_die ( "Could not set the RTC time" );
@@ -115,17 +102,18 @@ static int show_clock(int utc)
 {
 	struct tm *ptm;
 	time_t t;
-	char buffer [64];
+	RESERVE_CONFIG_BUFFER(buffer, 64);
 
 	t = read_rtc ( utc );
 	ptm = localtime ( &t );  /* Sets 'tzname[]' */
 
-	safe_strncpy ( buffer, ctime ( &t ), sizeof( buffer ));
+	safe_strncpy ( buffer, ctime ( &t ), 64);
 	if ( buffer [0] )
 		buffer [bb_strlen ( buffer ) - 1] = 0;
 
 	//printf ( "%s  %.6f seconds %s\n", buffer, 0.0, utc ? "" : ( ptm-> tm_isdst ? tzname [1] : tzname [0] ));
 	printf ( "%s  %.6f seconds\n", buffer, 0.0 );
+	RELEASE_CONFIG_BUFFER(buffer);
 
 	return 0;
 }
@@ -135,7 +123,7 @@ static int to_sys_clock(int utc)
 	struct timeval tv = { 0, 0 };
 	const struct timezone tz = { timezone/60 - 60*daylight, 0 };
 
-	tv. tv_sec = read_rtc ( utc );
+	tv.tv_sec = read_rtc ( utc );
 
 	if ( settimeofday ( &tv, &tz ))
 		bb_perror_msg_and_die ( "settimeofday() failed" );
@@ -151,7 +139,7 @@ static int from_sys_clock(int utc)
 	if ( gettimeofday ( &tv, &tz ))
 		bb_perror_msg_and_die ( "gettimeofday() failed" );
 
-	write_rtc ( tv. tv_sec, utc );
+	write_rtc ( tv.tv_sec, utc );
 	return 0;
 }
 
@@ -166,7 +154,7 @@ static int check_utc(void)
 	FILE *f = fopen ( ADJTIME_PATH, "r" );
 
 	if ( f ) {
-		char buffer [128];
+		RESERVE_CONFIG_BUFFER(buffer, 128);
 
 		while ( fgets ( buffer, sizeof( buffer ), f )) {
 			int len = bb_strlen ( buffer );
@@ -182,6 +170,7 @@ static int check_utc(void)
 			}
 		}
 		fclose ( f );
+		RELEASE_CONFIG_BUFFER(buffer);
 	}
 	return utc;
 }