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ktrace — ?ץ??????Υȥ졼??

?饤?֥???

Standard C Library (libc, -lc)

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<sys/param.h> <sys/time.h> <sys/uio.h> <sys/ktrace.h> int ktrace(const char *tracefile, int ops, int trpoints, int pid)

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ktrace() ?????ƥॳ?????ϡ?1 ?Ĥޤ???ʣ???Υץ??????Υȥ졼????ͭ???ޤ???̵???ˤ??ޤ??? ?桼???ϼ?ʬ?Υץ????????????ȥ졼???Ǥ??ޤ??? ?????ѥ桼??????????setuid ?ץ????????ޤ??? setgid ?ץ??????????ȥ졼???Ǥ??ޤ???

tracefile ?????ϡ??ȥ졼???˻??Ѥ????ե??????Υѥ?̾?????ꤷ?ޤ??? ?ե???????¸?ߤ??Ƥ??ʤ????Фʤ餺?? ?ƤӽФ?¦?ץ??????ˤ??äƽ????߲?ǽ???̾??ե??????Ǥ???ɬ?פ??????ޤ??? ?ȥ졼???쥳???ɤϤ??٤ƥե??????????????ɲä??????Τǡ? ľ???Υȥ졼???ǡ??????ڤ??ΤƤ뤿???ˤϥե???????Ĺ???? 0 ?ˤ???ɬ?פ? ?????ޤ??? ?ȥ졼??????̵???ʾ??? (???Ҥ? KTROP_CLEAR ?򻲾?)?? tracefile ?? NULL ?ˤǤ??ޤ???

ops ???????׵ᤵ?줿 ktrace ?????????ꤷ?ޤ??? ?????????Ƥ????????ϼ??ΤȤ????Ǥ?:

trpoints ?????ϴؿ??Τ????ȥ졼?????????ꤷ?ޤ??? ?????????Ƥ????ȥ졼?????ϼ??ΤȤ????Ǥ?:

?ƥȥ졼?????٥??Ȥϡ????ѤΥإå??θ??? ?ȥ졼?????˸?ͭ?ι??????Ǥ?³???????Υ쥳???ɤ????Ϥ??ޤ??? ???ѤΥإå??ϼ??ΤȤ????Ǥ?:

struct ktr_header {
	int	ktr_len;		/* ?Хåե???Ĺ?? */
	short	ktr_type;		/* ?ȥ졼???쥳???ɤΥ????? */
	pid_t	ktr_pid;		/* ?ץ????? ID */
	char	ktr_comm[MAXCOMLEN+1];	/* ???ޥ???̾ */
	struct	timeval ktr_time;	/* ?????ॹ?????? */
	caddr_t	ktr_buf;
};

ktr_len ?ե??????ɤϤ??Υإå???³?? ktr_type ?ǡ?????Ĺ???򼨤??ޤ??? ktr_pid ?ե??????ɤ? ktr_comm ?ե??????ɤϡ??쥳???ɤ??????????ץ??????ȥ??ޥ??ɤ򼨤??ޤ??? ktr_time ?ե??????ɤϡ? ?쥳???ɤ????????줿?????? (?ޥ???????ñ?̤?) ?????ޤ??? ktr_buf ?ϡ??????????ͥ??ݥ??󥿤Ǥ??ä?ͭ?ѤǤϤ????ޤ?????

???ѥإå??ˤ? ktr_len ?Х??Ȥ?Ĺ???? ktr_type ?쥳???ɤ?³???ޤ??? ?????פ˸?ͭ?Υ쥳???ɤ? <sys/ktrace.h> ???󥯥롼?ɥե??????????????????Ƥ??ޤ???

SYSCTL ???塼?ʥ֥?

???? sysctl(8) ???塼?ʥ֥뤬 ktrace() ??ư???˱ƶ????ޤ?:

kern.ktrace.geniosize

?ȥ졼?????줿 I/O ?׵᤬?ȥ졼???ե??????˵?Ͽ?????ǡ????̤????¤??ޤ???

kern.ktrace.request_pool

???٤˵?Ͽ?????ȥ졼?????٥??ȿ??????¤??ޤ???

?ץ????????ǥХå??Ǥ??뤫?????椹?? sysctl ???塼?ʥ֥? (p_candebug(9) ?ˤ??äƷ????????Ƥ???) ???ޤ? ktrace() ???????˱ƶ????ޤ???

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

???顼

ktrace() ?????ƥॳ?????ϼ??ξ????˼??Ԥ??ޤ?:

[ENOTDIR]

?ѥ??ι??????????˥ǥ??쥯?ȥ??ʳ??Τ??Τ??ޤޤ??Ƥ??ޤ???

[ENAMETOOLONG]

?ѥ?̾?ι??????Ǥ? 255 ʸ?????ۤ??Ƥ??뤫?? ?ޤ??ϥѥ?̾???Τ? 1023 ʸ?????ۤ??Ƥ??ޤ???

[ENOENT]

?????Υȥ졼???ե????뤬¸?ߤ??ޤ?????

[EACCES]

???֥ѥ?̾?ι??????ǤˤĤ??Ƹ??????Ĥ????ݤ????Ƥ??ޤ???

[ELOOP]

?ѥ?̾???Ѵ??????Ȥ??˸??Ф??줿?????ܥ??å????󥯤?¿?????ޤ???

[EIO]

?ե????륷???ƥ????ɤ߽񤭤??Ƥ????֤??????ϥ??顼??ȯ?????ޤ?????

[ENOSYS]

?????ͥ뤬 ktrace ???ݡ??ȤȤȤ??˥????ѥ??뤵???Ƥ??ޤ?????

????Ū?ʻ?????­?Τ????ˡ? ?????åɤ? 1 ?İʾ??Υȥ졼?????٥??Ȥ???Ͽ?Ǥ??ʤ????Ȥ????????ޤ??? ???ξ??֤ϥ????ͥ??ˤ??äƵ??????졢?????????????ȥ졼???׵??ˤ????? ktr_type ?ե??????ɤ? KTR_DROP ?ե饰?????åȤ????ޤ???

??Ϣ????

kdump(1), ktrace(1), utrace(2), sysctl(8), p_candebug(9)

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ktrace() ?????ƥॳ?????? 4.4BSD ?ǤϤ??????о줷?ޤ?????