 |
|
|
Home :: International :: Manuals :: Howto :: FAQ :: Man Pages :: Email Login |
ADJTIMEX
Section: Linux Programmer's Manual (2)Updated: 30 July 1997
Index Return to Main Contents
̾Á°
adjtimex - ¥«¡¼¥Í¥ë¤Î»þ·×¤òÄ´À°¤¹¤ë½ñ¼°
#include <sys/timex.h>int adjtimex(struct timex *buf);
ÀâÌÀ
Linux ¤Ï David L. Mill ¤Î»þ·×Ä´Àᥢ¥ë¥´¥ê¥º¥à¤ò»ÈÍѤ·¤Æ¤¤¤ë (RFC 1305 ¤ò»²¾È)¡£ ¥·¥¹¥Æ¥à¥³¡¼¥ë adjtimex ¤Ï¤³¤Î¥¢¥ë¥´¥ê¥º¥à¤ÎÄ´Àá¤Î¥Ñ¥é¥á¡¼¥¿¡¼¤òÆɤ߼è¤Ã¤¿¤ê¡¢ÀßÄꤷ¤¿¤ê¤¹¤ë¡£ ¤³¤Î´Ø¿ô¤Ï timex ¹½Â¤ÂΤؤΥݥ¤¥ó¥¿¡¼¤ò¼õ¤±¼è¤ê¡¢¤½¤ÎÃͤǥ«¡¼¥Í¥ë¤Î¥Ñ¥é¥á¡¼¥¿¡¼¤ò¹¹¿·¤·¤Æ¡¢ Ʊ¤¸¹½Â¤ÂΤ˸½ºß¤Î¥«¡¼¥Í¥ë¤ÎÃͤòÊÖ¤¹¡£ ¤³¤Î¹½Â¤ÂΤϰʲ¼¤Î¤è¤¦¤ËÀë¸À¤µ¤ì¤ë:
-
struct timex { int modes; /* mode selector */ long offset; /* time offset (usec) */ long freq; /* frequency offset (scaled ppm) */ long maxerror; /* maximum error (usec) */ long esterror; /* estimated error (usec) */ int status; /* clock command/status */ long constant; /* pll time constant */ long precision; /* clock precision (usec) (read only) */ long tolerance; /* clock frequency tolerance (ppm) (read only) */ struct timeval time; /* current time (read only) */ long tick; /* usecs between clock ticks */ };
modes ¥Õ¥£¡¼¥ë¥É¤Ï (ɬÍפ˱þ¤¸¤Æ) ¤É¤Î¥Ñ¥é¥á¡¼¥¿¡¼¤òÀßÄꤹ¤ë¤«·èÄꤹ¤ë¡£ ¤½¤ì¤Ï°Ê²¼¤Î¥Ó¥Ã¥ÈÃͤΥ¼¥í¸Ä°Ê¾å¤Î ¥Ó¥Ã¥È OR ¤«¤é¤Ê¤ë:
-
#define ADJ_OFFSET 0x0001 /* time offset */ #define ADJ_FREQUENCY 0x0002 /* frequency offset */ #define ADJ_MAXERROR 0x0004 /* maximum time error */ #define ADJ_ESTERROR 0x0008 /* estimated time error */ #define ADJ_STATUS 0x0010 /* clock status */ #define ADJ_TIMECONST 0x0020 /* pll time constant */ #define ADJ_TICK 0x4000 /* tick value */ #define ADJ_OFFSET_SINGLESHOT 0x8001 /* old-fashioned adjtime */
Ä̾ï¤Î¥æ¡¼¥¶¡¼¤Ï
mode
¤ÎÃͤϥ¼¥í¤ËÀ©¸Â¤µ¤ì¤Æ¤¤¤ë¡£
¥¹¡¼¥Ñ¡¼¡¦¥æ¡¼¥¶¡¼¤Î¤ß¤¬Á´¤Æ¤Î¥Ñ¥é¥á¡¼¥¿¡¼¤òÀßÄê¤Ç¤¤ë¡£
ÊÖ¤êÃÍ
À®¸ù¤·¤¿¾ì¹ç¡¢ adjtimex ¤Ï ¥¯¥í¥Ã¥¯¤Î¾õÂÖ¤òÊÖ¤¹:
-
#define TIME_OK 0 /* clock synchronized */ #define TIME_INS 1 /* insert leap second */ #define TIME_DEL 2 /* delete leap second */ #define TIME_OOP 3 /* leap second in progress */ #define TIME_BAD 4 /* clock not synchronized */
¼ºÇÔ¤·¤¿¾ì¹ç¤Ï adjtimex ¤Ï -1 ¤òÊÖ¤·¡¢ errno ¤¬ÀßÄꤵ¤ì¤ë¡£
¥¨¥é¡¼
- EFAULT
- buf ¤¬½ñ¤¹þ¤ß²Äǽ¤Ê¥á¥â¥ê¤ò»Ø¤·¤Æ¤¤¤Ê¤¤¡£
- EPERM
- buf.mode ¤¬¥¼¥í¤Ç¤Ê¤¯¥æ¡¼¥¶¡¼¤¬¥¹¡¼¥Ñ¡¼¡¦¥æ¡¼¥¶¡¼¤Ç¤Ê¤¤¡£
- EINVAL
- buf.offset ¤Ø -131071 ¤«¤é +131071 ¤ÎÈϰϳ°¤ÎÃͤòÀßÄꤷ¤è¤¦¤È¤·¤¿¤«¡¢ buf.status ¤Ë¾åµ°Ê³°¤ÎÃͤòÀßÄꤷ¤è¤¦¤È¤·¤¿¤«¡¢ buf.tick ¤Ë 900000/HZ ¤«¤é 1100000/HZ ¤ÎÈϰϳ°¤ÎÃͤòÀßÄꤷ¤è¤¦¤È¤·¤¿¡£ ¤³¤³¤Ç HZ ¤Ï¥·¥¹¥Æ¥à¤Î¥¿¥¤¥Þ¡¼³ä¤ê¹þ¤ß¤Î¼þ´ü¤Ç¤¢¤ë¡£
½àµò
adjtimex ¤Ï Linux ÆÃͤǤ¢¤ê¡¢ °Ü¿¢¤ò°Õ¿Þ¤·¤¿¥×¥í¥°¥é¥à¤Ç»ÈÍѤ·¤Æ¤Ï¤¤¤±¤Ê¤¤¡£ SVr4 ¤Ë¤Ï¤è¤¯»÷¤Æ¤¤¤ë¤¬°ìÈÌÀ¤Î¤Ê¤¤ adjtime ¥³¡¼¥ë¤¬Â¸ºß¤¹¤ë¡£´ØÏ¢¹àÌÜ
settimeofday(2)