̾??

access, eaccess — ?ե??????Υ?????????ǽ?????????å?????

?饤?֥???

Standard C Library (libc, -lc)

????

<unistd.h> int access(const char *path, int mode) int eaccess(const char *path, int mode)

????

access() ?????ƥॳ?????? eaccess() ?????ƥॳ?????ϡ? mode ?????ˤ??äƼ????줿???????????ĤˤĤ??? path ?????ǻ??ꤵ?????ե??????Υ?????????ǽ?????????å????ޤ??? mode ???ͤϡ??????å??????륢?????????? (?ɼ??????ĤˤĤ??Ƥ? R_OK ???????ߵ??ĤˤĤ??Ƥ? W_OK ???¹? / ???????ĤˤĤ??Ƥ? X_OK) ?Υӥå?ñ?̤? OR???ޤ???¸?߻ ( F_OK ) ?Τɤ??餫?Ǥ???

?????ʤ??????ϡ? intro(2) ?? ?ե????륢???????ѡ??ߥå????? ???????????򻲾Ȥ??Ƥ?????????

eaccess() ?????ƥॳ?????ϡ??¸??桼?? ID ?ȥ??롼?ץ????????ꥹ?Ȥ??Ѥ??? ?׵??????Ĥ??ޤ??? ???? access() ?????ƥॳ?????ϡ??¸??桼?? ID ?????????˼¥桼?? ID ???? ?¸????롼?? ID ?????????˼¥??롼?פȻĤ??Υ??롼?ץ????????ꥹ?Ȥ? ?Ѥ??ޤ???

?ץ??????μ¥桼???⤷???ϼ¸??桼????Ŭ?ڤ??ø??????ꡢ X_OK ?ˤĤ????????򼨤??Ƥ??Ƥ⡢?ºݤˤϥե??????μ¹Ե??ĥӥåȤ? ???ꤵ???Ƥ??ʤ????Ȥ??????ޤ??? Ʊ?????Ȥ??? R_OK ?????? W_OK ?ˤ⳺?????ޤ???

??????

Upon successful completion, the value 0 is returned; otherwise the value -1 is returned and the global variable errno is set to indicate the error.

???顼

?ե??????ؤΥ????????ϼ??ξ????˵??䤵???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]

???ꤵ?줿?ե????뤬¸?ߤ??ޤ?????

[ELOOP]

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

[EROFS]

?ɼ??????ѥե????륷???ƥ????Υե??????ˤĤ??ƽ????ߥ????????? ?׵ᤵ???ޤ?????

[ETXTBSY]

???????Ǽ¹????ν????ʼ?³?? (??ͭ?ƥ?????) ?ե??????ˤĤ??ƽ????ߥ??????????׵ᤵ???Ƥ??ޤ???

[EACCES]

?ե??????⡼?ɤε??ĥӥåȤ??׵ᤵ?줿?????????????Ƥ??ʤ????? ?ޤ??ϥѥ??ι??????ǤˤĤ??Ƹ??????Ĥ????䤵???Ƥ??ޤ???

[EFAULT]

path ?????????ץ??????˳??????Ƥ??줿???ɥ쥹???֤??ϰϳ????ؤ??Ƥ??ޤ???

[EIO]

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

?????????ƥ??˴ؤ????ͻ?

access() ?????ƥॳ?????ϡ????????֤ˤ??ä?????Ū?ʥ????????ƥ??ۡ????Ȥʤ??Τǡ? ?Ȥ??٤??ǤϤ????ޤ????? ?桼?? ID ?????ȥ??롼?? ID ???ꤵ?줿???ץꥱ?????????ϡ? ?¸??桼?? ID ?⤷???ϼ¸????롼?? ID ???????????褦?ˤ??Ƥ????????? ?????Ƽ¥桼?? ID ?⤷???ϼ¥??롼?? ID ?ǤΥ??????????? access() ?????Ѥ????ϵ?Ū?˥????å??????ΤǤϤʤ???ľ?ܼ¹Ԥ????٤??Ǥ??? ??Ŭ?ڤ˻??Ѥ??줿???硢 eaccess() ?ƤӽФ???Ʊ?ͤˤ??ƶ??????оݤȤʤ뤳?Ȥ??????ޤ???

??Ϣ????

chmod(2), intro(2), stat(2)

????

access() ?????ƥॳ?????? IEEE Std 1003.1-1990 (“POSIX.1”) ??Ŭ?礷?Ƥ??ޤ???

????

access() ?ؿ??? Version 7 AT&T UNIX ???о줷?ޤ?????