*
* 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.
*/
-
-#include <sys/ioctl.h>
-#include <sys/time.h>
+#include "libbb.h"
+/* After libbb.h, since it needs sys/types.h on some systems */
#include <sys/utsname.h>
-#include <ctype.h>
-#include <fcntl.h>
-#include <getopt.h>
-#include <stdlib.h>
-#include <string.h>
-#include <syslog.h>
-#include <time.h>
-#include <unistd.h>
-#include "busybox.h"
-
-/* Copied from linux/rtc.h to eliminate the kernel dependency */
-struct linux_rtc_time {
- int tm_sec;
- int tm_min;
- int tm_hour;
- int tm_mday;
- int tm_mon;
- int tm_year;
- int tm_wday;
- int tm_yday;
- int tm_isdst;
-};
-
-#define RTC_SET_TIME _IOW('p', 0x0a, struct linux_rtc_time) /* Set RTC time */
-#define RTC_RD_TIME _IOR('p', 0x09, struct linux_rtc_time) /* Read RTC time */
-
-#ifdef CONFIG_FEATURE_HWCLOCK_LONGOPTIONS
+#include "rtc_.h"
+
+#if ENABLE_FEATURE_HWCLOCK_LONG_OPTIONS
# ifndef _GNU_SOURCE
# define _GNU_SOURCE
# endif
#endif
+static const char *rtcname;
+
static time_t read_rtc(int utc)
{
- int rtc;
- struct tm tm;
- char *oldtz = 0;
- time_t t = 0;
-
- if (( rtc = open ( "/dev/rtc", O_RDONLY )) < 0 ) {
- if (( rtc = open ( "/dev/misc/rtc", O_RDONLY )) < 0 )
- bb_perror_msg_and_die ( "Could not access RTC" );
- }
- 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
-
- close ( rtc );
-
- if ( utc ) {
- oldtz = getenv ( "TZ" );
- setenv ( "TZ", "UTC 0", 1 );
- tzset ( );
- }
-
- t = mktime ( &tm );
-
- if ( utc ) {
- if ( oldtz )
- setenv ( "TZ", oldtz, 1 );
- else
- unsetenv ( "TZ" );
- tzset ( );
- }
- return t;
+ time_t ret;
+ int fd;
+
+ fd = rtc_xopen(&rtcname, O_RDONLY);
+ ret = rtc_read_time(fd, utc);
+ close(fd);
+
+ return ret;
}
static void write_rtc(time_t t, int utc)
{
- int rtc;
struct tm tm;
+ int rtc = rtc_xopen(&rtcname, O_WRONLY);
- if (( rtc = open ( "/dev/rtc", O_WRONLY )) < 0 ) {
- if (( rtc = open ( "/dev/misc/rtc", O_WRONLY )) < 0 )
- bb_perror_msg_and_die ( "Could not access RTC" );
- }
-
- tm = *( utc ? gmtime ( &t ) : localtime ( &t ));
- tm. tm_isdst = 0;
+ if (utc)
+ gmtime_r(&t, &tm);
+ else
+ localtime_r(&t, &tm);
+ tm.tm_isdst = 0;
- if ( ioctl ( rtc, RTC_SET_TIME, &tm ) < 0 )
- bb_perror_msg_and_die ( "Could not set the RTC time" );
+ xioctl(rtc, RTC_SET_TIME, &tm);
- close ( rtc );
+ close(rtc);
}
-static int show_clock(int utc)
+static void show_clock(int utc)
{
- struct tm *ptm;
+ //struct tm *ptm;
time_t t;
- char buffer [64];
-
- t = read_rtc ( utc );
- ptm = localtime ( &t ); /* Sets 'tzname[]' */
+ char *cp;
- safe_strncpy ( buffer, ctime ( &t ), sizeof( buffer ));
- if ( buffer [0] )
- buffer [bb_strlen ( buffer ) - 1] = 0;
+ t = read_rtc(utc);
+ //ptm = localtime(&t); /* Sets 'tzname[]' */
- //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 );
+ cp = ctime(&t);
+ if (cp[0])
+ cp[strlen(cp) - 1] = '\0';
- return 0;
+ //printf("%s %.6f seconds %s\n", cp, 0.0, utc ? "" : (ptm->tm_isdst ? tzname[1] : tzname[0]));
+ printf("%s 0.000000 seconds\n", cp);
}
-static int to_sys_clock(int utc)
+static void 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 );
+ struct timeval tv;
+ struct timezone tz;
- if ( settimeofday ( &tv, &tz ))
- bb_perror_msg_and_die ( "settimeofday() failed" );
+ tz.tz_minuteswest = timezone/60 - 60*daylight;
+ tz.tz_dsttime = 0;
- return 0;
+ tv.tv_sec = read_rtc(utc);
+ tv.tv_usec = 0;
+ if (settimeofday(&tv, &tz))
+ bb_perror_msg_and_die("settimeofday() failed");
}
-static int from_sys_clock(int utc)
+static void from_sys_clock(int utc)
{
- struct timeval tv = { 0, 0 };
- struct timezone tz = { 0, 0 };
-
- if ( gettimeofday ( &tv, &tz ))
- bb_perror_msg_and_die ( "gettimeofday() failed" );
+ struct timeval tv;
- write_rtc ( tv. tv_sec, utc );
- return 0;
+ gettimeofday(&tv, NULL);
+ //if (gettimeofday(&tv, NULL))
+ // bb_perror_msg_and_die("gettimeofday() failed");
+ write_rtc(tv.tv_sec, utc);
}
+#define HWCLOCK_OPT_LOCALTIME 0x01
+#define HWCLOCK_OPT_UTC 0x02
+#define HWCLOCK_OPT_SHOW 0x04
+#define HWCLOCK_OPT_HCTOSYS 0x08
+#define HWCLOCK_OPT_SYSTOHC 0x10
+#define HWCLOCK_OPT_RTCFILE 0x20
-static int check_utc(void)
+int hwclock_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int hwclock_main(int argc UNUSED_PARAM, char **argv)
{
- int utc = 0;
- FILE *f = fopen ( "/var/lib/hwclock/adjtime", "r" );
-
- if ( f ) {
- char buffer [128];
-
- while ( fgets ( buffer, sizeof( buffer ), f )) {
- int len = bb_strlen ( buffer );
-
- while ( len && isspace ( buffer [len - 1] ))
- len--;
-
- buffer [len] = 0;
-
- if ( strncmp ( buffer, "UTC", 3 ) == 0 ) {
- utc = 1;
- break;
- }
- }
- fclose ( f );
- }
- return utc;
-}
-
-#define HWCLOCK_OPT_LOCALTIME 0x01
-#define HWCLOCK_OPT_UTC 0x02
-#define HWCLOCK_OPT_SHOW 0x04
-#define HWCLOCK_OPT_HCTOSYS 0x08
-#define HWCLOCK_OPT_SYSTOHC 0x10
-
-extern int hwclock_main ( int argc, char **argv )
-{
- unsigned long opt;
+ unsigned opt;
int utc;
-#ifdef CONFIG_FEATURE_HWCLOCK_LONGOPTIONS
-static const struct option hwclock_long_options[] = {
- { "localtime", 0, 0, 'l' },
- { "utc", 0, 0, 'u' },
- { "show", 0, 0, 'r' },
- { "hctosys", 0, 0, 's' },
- { "systohc", 0, 0, 'w' },
- { 0, 0, 0, 0 }
- };
- bb_applet_long_options = hwclock_long_options;
+#if ENABLE_FEATURE_HWCLOCK_LONG_OPTIONS
+ static const char hwclock_longopts[] ALIGN1 =
+ "localtime\0" No_argument "l"
+ "utc\0" No_argument "u"
+ "show\0" No_argument "r"
+ "hctosys\0" No_argument "s"
+ "systohc\0" No_argument "w"
+ "file\0" Required_argument "f"
+ ;
+ applet_long_options = hwclock_longopts;
#endif
-
- bb_opt_complementally = "!r~ws:w~rs:s~wr:l~u:u~l";
- opt = bb_getopt_ulflags(argc, argv, "lursw");
+ opt_complementary = "r--ws:w--rs:s--wr:l--u:u--l";
+ opt = getopt32(argv, "lurswf:", &rtcname);
/* If -u or -l wasn't given check if we are using utc */
if (opt & (HWCLOCK_OPT_UTC | HWCLOCK_OPT_LOCALTIME))
- utc = opt & HWCLOCK_OPT_UTC;
+ utc = (opt & HWCLOCK_OPT_UTC);
+ else
+ utc = rtc_adjtime_is_utc();
+
+ if (opt & HWCLOCK_OPT_HCTOSYS)
+ to_sys_clock(utc);
+ else if (opt & HWCLOCK_OPT_SYSTOHC)
+ from_sys_clock(utc);
else
- utc = check_utc();
-
- if (opt & HWCLOCK_OPT_HCTOSYS) {
- return to_sys_clock ( utc );
- }
- else if (opt & HWCLOCK_OPT_SYSTOHC) {
- return from_sys_clock ( utc );
- } else {
/* default HWCLOCK_OPT_SHOW */
- return show_clock ( utc );
- }
+ show_clock(utc);
+
+ return 0;
}
projects / oweals / busybox.git / blobdiff