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minherit — ?ڡ????ηѾ??????椹??

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Standard C Library (libc, -lc)

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<sys/mman.h> int minherit(void *addr, size_t len, int inherit)

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minherit() ?????ƥॳ?????ϡ??????Υڡ??????Ѿ??κݤ??????Ȥ??? inherit ?????Ĥ褦???ѹ????ޤ??? ???٤Ƥμ????ˤ????ơ??Ѿ??κݤ????????ڡ???ñ?̤??????Ǥ??뤳?Ȥ? ?ݾڤ??????Ƥ????櫓?ǤϤ????ޤ????? ?ѹ???ñ?̤ϥ꡼?????????Τ??⤷???ޤ????? FreeBSD ?ϡ??ڡ??????˷Ѿ???????Ĵ?????뵡ǽ???????ޤ??? ?Ѿ??ϡ? fork() ?Ǻ??????줿?Ҷ????Ф??ƤΤ߱ƶ????ޤ??? exec() ?ˤϱƶ??????ޤ????? exec ???줿?ץ??????ϡ????ɥ쥹???????Τ??֤??????ޤ??? ???Υ????ƥॳ?????ϿƤΥ??ɥ쥹???֤??Ф??Ƥ??ޤ??ƶ??????ޤ??? (?ƻҤˤ??륢?ɥ쥹???֤ζ?ͭ??????Ū?ˤ??????ޤ??????????Ͻ??????ޤ?)??

?Ѿ????????ʵ?ǽ?Ǥ??ꡢ?ۤȤ??ɤ? mmap() ?? MAP_SHARED ??ǽ???֤??????????Ƥ??ޤ??? ???????ʤ??顢 minherit() ?????Ѥ??ơ? MAP_PRIVATE ?ǥޥåפ??줿???????֥??å????ƻҴ֤Ƕ?ͭ??ǽ?Ǥ??? ?????ˤ??ꡢ?Ƥ⤷???ϻҤˤ??뽤???϶?ͭ?????ޤ????? ???????ؤˤ????ե????????ѹ??????ޤ?????

INHERIT_SHARE

?ܥ??ץ??????ϡ??оݤΥ??ɥ쥹???֤??ƻҴ֤Ƕ?ͭ?????ޤ??? ?ܥ??ץ??????ϡ? ???????ؤˤ????Хå??󥰥??ȥ????ɤΤ褦?˥ޥåפ????뤫?ˤϡ??ƶ????ޤ?????

INHERIT_NONE

?ܥ??ץ??????ϡ??оݤΥ??ɥ쥹???֤ηѾ??????????ɻߤ??ޤ??? ???????ɥ쥹???֤ϻҤ????Ǥϥ????ޥåפ????ޤ???

INHERIT_COPY

?ܥ??ץ??????ϡ????ɥ쥹???֤??Ҥ??Ф????ԡ??????饤?ȤǷѾ??????ޤ??? ?ܥ??ץ??????ˤ??Թ????????Ѥ????ꡢ ?Ƥ? fork ?????Ȥ??˥??ɥ쥹???֤????ԡ??????饤?ȤˤʤäƤ??ޤ??ޤ??? ?????Υޥåԥ󥰤? MAP_SHARED ?ξ??硢 ?Ƥ? fork ???????ˤϤ????ϿƤˤ????Ƥ϶?ͭ?????ޤ????? ?ޤ??????ζ?ͭ?Хå??󥰥??ȥ??ޥåԥ󥰤ϡ? ?Ƥˤ????ƥ????ޥåפ??ƺƥޥåפ????ʳ??˲??????褦???????ޤ?????

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The minherit() 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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minherit() ?????ƥॳ?????ϼ??ξ????˽????????Ԥ??ޤ?:

[EINVAL]

addr ?????? len ?????ˤ??äƻ??ꤵ???벾?ۥ??ɥ쥹?ϰϤ?ͭ???ǤϤ????ޤ?????

[EACCES]

inherit ?????ˤ??äƻ??ꤵ?????ե饰???? addr ?????? len ?????ˤ??äƻ??ꤵ?줿?ڡ??????Ф???Ŭ?ڤǤϤ????ޤ????Ǥ?????

?Х?

???? MAP_PRIVATE ?⤷???? MAP_SHARED ???Ƥ??????Τ˷Ѿ??????ꤹ???ȡ??ΰ??򥢥??ޥåפ??ƺƥޥåפ????ʳ??? ???Ȥ??ȤΥ??ԡ??????饤?Ȥΰ?̣???????????뤳?ȤϤǤ??ޤ?????

??Ϣ????

fork(2), madvise(2), mincore(2), mprotect(2), msync(2), munmap(2), rfork(2)

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minherit() ?????ƥॳ?????? OpenBSD ?ǤϤ??????о줷?ޤ?????