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adjtime — ?????ƥ९???å??Ȥ?Ʊ???????Ǥ????褦?˻?????????????

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Standard C Library (libc, -lc)

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<sys/time.h> int adjtime(const struct timeval *delta, struct timeval *olddelta)

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adjtime() ?????ƥॳ?????ϡ? gettimeofday(2) ???֤??褦?ʥ????ƥ?????????Ĵ?????ޤ??? ?????? delta ?ǻ??ꤵ?줿???֤????????ƥ????????ʤޤ??롢?ޤ????٤餻?ޤ??? delta ?????ξ??硢 ????????λ?????ޤǥ????å??????????ä????????ä????뤳?Ȥˤ??ä? ?????å?????®?????ޤ??? delta ?????ξ??????̾??????礭????ʬ?????Ѥ??ޤ??? ???????¹Ԥ??뤿???˻??Ѥ????뤺???ϡ? ???̤ˤ? 1 ?ѡ??????Ȥγ????Ǥ??? ?????ˤ??ꡢ?????Ͼ???ñĴ???ôؿ??Ȥʤ??ޤ??? ?????? adjtime() ?ƤӽФ??ˤ????????????????Ƥ? adjtime() ???ƤӽФ??줿???˴?λ???Ƥ??ʤ???ǽ?????????ޤ??? olddelta ?? nil ?Ǥʤ????硢?ؤ????????Ƥ??빽¤?Τϡ? ?????θƤӽФ??????Ρ??????Ȥ??? ????????ɬ?פΤ????ޥ???????ñ?̤ο??????????˳?Ǽ?????Ƥ????Ǥ??礦??

???θƤӽФ??ϡ????????륨?ꥢ?ͥåȥ?????Υ????ԥ塼???Υ????å??? Ʊ?????륿???ॵ???Ф????Ѥ??뤳?Ȥ??????ޤ??? ???Τ褦?ʥ????ॵ???Фϥޥ????Υ????å?????®?????ޤ??? ??®?????ơ?????????ʿ?ѥͥåȥ???????ˤ??ޤ???

adjtime() ?????ƥॳ?????ϥ????ѥ桼???˸??ꤵ???Ƥ??ޤ???

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The adjtime() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indicate the error.

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adjtime() ?????ƥॳ?????ϼ??ξ????˽????????Ԥ??ޤ?:

[EFAULT]

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[EPERM]

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date(1), gettimeofday(2), timed(8), timedc(8) R. Gusella and S. Zatti, TSP: The Time Synchronization Protocol for UNIX 4.3BSD.

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adjtime() ?????ƥॳ?????? 4.3BSD ???о줷?ޤ?????