#include <sys/ioctl.h>
#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 */
# endif
#endif
-static time_t read_rtc(int utc)
+static int xopen_rtc(int flags)
{
int rtc;
+ rtc = open("/dev/rtc", flags);
+ if (rtc < 0) {
+ rtc = open("/dev/misc/rtc", flags);
+ if (rtc < 0)
+ bb_perror_msg_and_die("cannot access RTC");
+ }
+ return rtc;
+}
+
+static time_t read_rtc(int utc)
+{
struct tm tm;
char *oldtz = 0;
time_t t = 0;
+ int rtc = xopen_rtc(O_RDONLY);
- if (( rtc = open ( "/dev/rtc", O_RDONLY )) < 0 ) {
- if (( rtc = open ( "/dev/misc/rtc", O_RDONLY )) < 0 )
- bb_perror_msg_and_die ( "cannot access RTC" );
- }
- memset ( &tm, 0, sizeof( struct tm ));
- if ( ioctl ( rtc, RTC_RD_TIME, &tm ) < 0 )
- bb_perror_msg_and_die ( "cannot read time from RTC" );
+ memset(&tm, 0, sizeof(struct tm));
+ if (ioctl(rtc, RTC_RD_TIME, &tm) < 0 )
+ bb_perror_msg_and_die("cannot read time from RTC");
tm.tm_isdst = -1; /* not known */
- close ( rtc );
+ close(rtc);
- if ( utc ) {
- oldtz = getenv ( "TZ" );
- setenv ( "TZ", "UTC 0", 1 );
- tzset ( );
+ if (utc) {
+ oldtz = getenv("TZ");
+ setenv("TZ", "UTC 0", 1);
+ tzset();
}
- t = mktime ( &tm );
+ t = mktime(&tm);
- if ( utc ) {
- if ( oldtz )
- setenv ( "TZ", oldtz, 1 );
+ if (utc) {
+ if (oldtz)
+ setenv("TZ", oldtz, 1);
else
- unsetenv ( "TZ" );
- tzset ( );
+ unsetenv("TZ");
+ tzset();
}
return t;
}
static void write_rtc(time_t t, int utc)
{
- int rtc;
struct tm tm;
+ int rtc = xopen_rtc(O_WRONLY);
- if (( rtc = open ( "/dev/rtc", O_WRONLY )) < 0 ) {
- if (( rtc = open ( "/dev/misc/rtc", O_WRONLY )) < 0 )
- bb_perror_msg_and_die ( "cannot access RTC" );
- }
-
- tm = *( utc ? gmtime ( &t ) : localtime ( &t ));
+ tm = *(utc ? gmtime(&t) : localtime(&t));
tm.tm_isdst = 0;
- if ( ioctl ( rtc, RTC_SET_TIME, &tm ) < 0 )
- bb_perror_msg_and_die ( "cannot set the RTC time" );
+ if (ioctl(rtc, RTC_SET_TIME, &tm) < 0)
+ bb_perror_msg_and_die("cannot set the RTC time");
- close ( rtc );
+ close(rtc);
}
static int show_clock(int utc)
time_t t;
RESERVE_CONFIG_BUFFER(buffer, 64);
- t = read_rtc ( utc );
- ptm = localtime ( &t ); /* Sets 'tzname[]' */
+ t = read_rtc(utc);
+ ptm = localtime(&t); /* Sets 'tzname[]' */
- safe_strncpy ( buffer, ctime ( &t ), 64);
- if ( buffer [0] )
- buffer [strlen ( buffer ) - 1] = 0;
+ safe_strncpy(buffer, ctime(&t), 64);
+ if (buffer[0])
+ buffer[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 );
+ //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;
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" );
+ if (settimeofday(&tv, &tz))
+ bb_perror_msg_and_die("settimeofday() failed");
return 0;
}
struct timeval tv = { 0, 0 };
struct timezone tz = { 0, 0 };
- if ( gettimeofday ( &tv, &tz ))
- bb_perror_msg_and_die ( "gettimeofday() failed" );
+ 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;
}
static int check_utc(void)
{
int utc = 0;
- FILE *f = fopen ( ADJTIME_PATH, "r" );
+ FILE *f = fopen(ADJTIME_PATH, "r");
- if ( f ) {
+ if (f) {
RESERVE_CONFIG_BUFFER(buffer, 128);
- while ( fgets ( buffer, sizeof( buffer ), f )) {
- int len = strlen ( buffer );
+ while (fgets(buffer, sizeof(buffer), f)) {
+ int len = strlen(buffer);
- while ( len && isspace ( buffer [len - 1] ))
+ while (len && isspace(buffer[len - 1]))
len--;
- buffer [len] = 0;
+ buffer[len] = 0;
- if ( strncmp ( buffer, "UTC", 3 ) == 0 ) {
+ if (strncmp(buffer, "UTC", 3) == 0 ) {
utc = 1;
break;
}
}
- fclose ( f );
+ fclose(f);
RELEASE_CONFIG_BUFFER(buffer);
}
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
+#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
-int hwclock_main ( int argc, char **argv )
+int hwclock_main(int argc, char **argv )
{
unsigned opt;
int utc;
#if ENABLE_FEATURE_HWCLOCK_LONG_OPTIONS
-static const struct option hwclock_long_options[] = {
+ static const struct option hwclock_long_options[] = {
{ "localtime", 0, 0, 'l' },
{ "utc", 0, 0, 'u' },
{ "show", 0, 0, 'r' },
};
applet_long_options = hwclock_long_options;
#endif
-
opt_complementary = "?:r--ws:w--rs:s--wr:l--u:u--l";
opt = getopt32(argc, argv, "lursw");
utc = check_utc();
if (opt & HWCLOCK_OPT_HCTOSYS) {
- return to_sys_clock ( utc );
+ return to_sys_clock(utc);
}
else if (opt & HWCLOCK_OPT_SYSTOHC) {
- return from_sys_clock ( utc );
+ return from_sys_clock(utc);
} else {
/* default HWCLOCK_OPT_SHOW */
- return show_clock ( utc );
+ return show_clock(utc);
}
}
projects / oweals / busybox.git / blobdiff