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printf, uprintf, tprintf, log — ?ե????ޥåȤ??줿???Ϥ??Ѵ?

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<sys/types.h> <sys/systm.h> int printf(const char *fmt, ...) void tprintf(struct proc *p, int pri, const char *fmt, ...) int uprintf(const char *fmt, ...) <sys/syslog.h> void log(int pri, const char *fmt, ...)

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printf(9) ?ե??ߥ??δؿ??? printf(3) ?ե??ߥ??δؿ??????????Ƥ??ޤ??? ???ΰۤʤä??ؿ??Ϥ??줾???ۤʤä????ϥ??ȥ꡼???????Ѥ??ޤ??? uprintf() ?ؿ??ϸ??ߤΥץ??????????椷?Ƥ??? tty ?˽??Ϥ??ޤ????? printf() ?ϥ????󥰥ե??????ƥ??????ӥ??󥽡????˽??Ϥ??ޤ??? tprintf() ?ؿ??? pri ?? -1 ?Ǥʤ??????ˤϡ??ץ????? p ?˴?Ϣ?Ť????줿 tty ?????ӥ????󥰥ե??????ƥ??˽??Ϥ??ޤ??? log() ?ؿ??? pri ?ˤ??äƼ????줿???????٥??????Ѥ??ơ? ?????ͥ??Υ????󥰥ե??????ƥ??˥??å????????????ޤ???

?????餽?줾???δ?Ϣ?????ؿ??ϡ? printf(3) ??Ʊ????ˡ?? fmt ?ѥ??᡼???????Ѥ??ޤ??? ???????ʤ??顢 printf(9) ?? 2 ?Ĥ?¾???Ѵ??????Ҥ??ɲä??Ƥ??ޤ???

%b ???̻Ҥ? 2 ?Ĥΰ????????Ԥ??ޤ??? int ?????? char * ?Ǥ??? ???????ϥӥåȥޥ????Υǥ????ɤΤ??ᡢ ?쥸?????ͤȰ????ޥ????Ȥ??ƻ??Ѥ????ޤ??? ???ΰ????ޥ????? 2 ?Ĥ???ʬ?ǹ????????ޤ??? ?????Ȱ????Ǥ??? ?????ͤ??????ͤȤ???ɽ???????????Ϥδ????Ǥ??? ?㤨?С?\10 ?? 8 ?ʿ??? \20 ?? 16 ?ʿ???Ϳ???ޤ??? ?????ϥӥåȼ??̻Ҥ??¤ӤȤ??ƹ????????ޤ??? ?ġ??Υӥåȼ??̻ҤϤ??μ??̻Ҥ?ɽ???ӥå??ֹ????????ͤǻϤޤ??ޤ??? ???̻ҤλĤ???ʬ?Ϥ??ΥӥåȤ?̾?????ޤ?ʸ?????Ǥ??? ????ʸ?????ϼ??Υӥåȼ??̻ҤλϤޤ??Υӥå??ֹ桢 ?ޤ??ϺǸ??Υӥåȼ??̻ҤΤ????? NUL ?ǽ?ü?????ޤ???

%D ???̻Ҥ? 16 ?ʥ????פ????????뤳?Ȥ??տޤ????Ƥ??ޤ??? %D ?????? 2 ?Ĥΰ??????׵ᤷ?ޤ??? u_char * ?ݥ??󥿤????? char * ʸ?????Ǥ??? ?ݥ??󥿤??ؤ??Ƥ??????????ϡ?16 ?ʿ??ǰ??٤? 1 ?Х??Ƚ??Ϥ????ޤ??? ʸ?????ϸġ??ΥХ??Ȥδ֤Υǥ??ߥ??Ȥ??ƻ??Ѥ????ޤ??? ?⤷¸?ߤ????С????ǥ??쥯?ƥ??֤?ɽ???????Х??ȿ??????ꤷ?ޤ??? ?ǥե????ȤǤϡ?16 ?Х??ȤΥǡ????????Ϥ????ޤ???

log() ?ؿ??Ϥ??? pri ???? (?????ϸ??򤵤??? ‘priority (ͥ????)’ ?ȸƤФ??Ƥ???) ?? syslog(3) ?Υ??٥??ͤ? LOG_DEBUG ???? LOG_EMERG ?ޤǤ????Ѥ??ޤ??? ???????ˡ? pri ?? -1 ??Ϳ?????줿?????ˤϡ????Υ??å??????Ϥ??????? log() ?θƤӽФ??ˤ??äƳ??Ϥ??줿???Ƕ??Υ??????å????????ɲä????ޤ??? ???????Υ??å??????ϥ????ͥ뼫?Ȥˤ??ä??????????뤿?ᡢ ???Υե??????ƥ??Ͼ??? LOG_KERN ?Ȥʤ??ޤ???

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printf() ?????? uprintf() ?ؿ???ɽ?????줿ʸ???????֤??ޤ???

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???λ??????? %b ?????? %D ?Ѵ??????Ҥλ?????ˡ?򼨤??Ƥ??ޤ??? ?ؿ?

void
printf_test(void)
{

	printf("reg=%b\n", 3, "\10\2BITTWO\1BITONE\n");
	printf("out: %4D\n", "AAAA", ":");
}

?ϲ????ν??Ϥ?ȯ???????ޤ???

reg=3<BITTWO,BITONE>
out: 41:41:41:41

???θƤӽФ?

log(LOG_DEBUG, "%s%d: been there.\n", sc->sc_name, sc->sc_unit);

??Ŭ?ڤʥǥХå????å???????ͥ???? “kern.debug” ?ǥ????ƥ????????ɲä??ޤ???

??Ϣ????

printf(3), syslog(3)