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chdir, fchdir — ???ߤκ??ȥǥ??쥯?ȥ????ѹ?????

?饤?֥???

Standard C Library (libc, -lc)

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<unistd.h> int chdir(const char *path) int fchdir(int fd)

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path ?????ϡ??ǥ??쥯?ȥ??Υѥ?̾???ؤ??ޤ??? chdir() ?????ƥॳ?????ˤ??äơ????ꤵ?줿?ǥ??쥯?ȥ꤬ ???ߤκ??ȥǥ??쥯?ȥꡢ???ʤ????????å??? ‘/’ ?dz??Ϥ??ʤ??ѥ?̾?Υѥ??????γ??????ˤʤ??ޤ???

fchdir() ?????ƥॳ?????ˤ??äơ? fd ?????Ȥ????ǥ??쥯?ȥ꤬ ???ߤκ??ȥǥ??쥯?ȥ? (?????å??? ‘/’ ?dz??Ϥ??ʤ??ѥ?̾?Υѥ??????γ?????) ?ˤʤ??ޤ???

?ǥ??쥯?ȥ꤬???ߤκ??ȥǥ??쥯?ȥ??ˤʤ뤿???ˤϡ? ?ץ??????????Υǥ??쥯?ȥ??ؤ? ?¹? (????) ???????????Ĥ????äƤ???ɬ?פ??????ޤ???

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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

???Τ??? 1 ?İʾ夬???ξ??硢 chdir() ?????ƥॳ?????ν????ϼ??Ԥ??????ߤκ??ȥǥ??쥯?ȥ????ѹ??????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?ǥ??쥯?ȥ꤬¸?ߤ??ޤ?????

[ELOOP]

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

[EACCES]

?ѥ?̾?ι??????ǤΤ????줫?ǡ??????????Ĥ????Ƥ??ޤ?????

[EFAULT]

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

[EIO]

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

???Τ??? 1 ?İʾ夬???ξ??硢 fchdir() ?????ƥॳ?????ν????ϼ??Ԥ??????ߤκ??ȥǥ??쥯?ȥ????ѹ??????ޤ???:

[EACCES]

?ե????뵭?һҤ????Ȥ????ǥ??쥯?ȥ??Ǹ????????Ĥ????Ƥ??ޤ?????

[ENOTDIR]

?ե????뵭?һҤ??ǥ??쥯?ȥ??򻲾Ȥ??Ƥ??ޤ?????

[EBADF]

???? fd ??ͭ???ʥե????뵭?һҤǤϤ????ޤ?????

??Ϣ????

chroot(2)

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

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chdir() ?????ƥॳ?????? Version 7 AT&T UNIX ???о줷?ޤ????? fchdir() ?????ƥॳ?????? 4.2BSD ???о줷?ޤ?????