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chown, fchown, lchown — ?ե??????ν?ͭ?Ԥȥ??롼?פ??ѹ?????

?饤?֥???

Standard C Library (libc, -lc)

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<unistd.h> int chown(const char *path, uid_t owner, gid_t group) int fchown(int fd, uid_t owner, gid_t group) int lchown(const char *path, uid_t owner, gid_t group)

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path ?ǻ??ꤵ?줿???ޤ??? fd ?ǻ??Ȥ??줿?ե??????ν?ͭ?? ID ?????ӥ??롼?? ID ???? ?????˻??ꤵ?줿 owner ?????? group ???ѹ????ޤ??? ?ե??????ν?ͭ?Ԥϡ? group ?˼?ʬ????°???Ƥ???Ǥ?դΥ??롼?פ??????Ǥ??ޤ??? ???????? owner ???ѹ????뤳?Ȥ??Ǥ????Τϥ????ѥ桼???ΤߤǤ???

chown() ?????ƥॳ?????ϡ??????ѥ桼???ˤ??äƼ¹Ԥ????????????Τ????ơ? ?ե????????Υ桼?? ID ?????ӥåȤȥ??롼?? ID ?????ӥåȤ򥯥ꥢ???ޤ??? ?????ϡ??桼?? ID ???ꤢ?뤤?ϥ??롼?? ID ???ꤵ?줿?ץ??????ब ???????ޤ??Ϥ????????Ǻ??????????Τ??ɻߤ??뤿???Ǥ??? chown() ?????ƥॳ?????ϡ??????ܥ??å????󥯤򤿤ɤꡢ ???󥯼??ΤǤϤʤ????󥯤Υ??????åȤ˺??Ѥ??ޤ???

fchown() ?????ƥॳ???뤬?ä??????ʤΤϡ??ե????????å??󥰥ץ??ߥƥ??֤ȤȤ??? ???Ѥ????Ȥ??Ǥ? (flock(2) ?򻲾?)??

lchown() ?????ƥॳ?????ϡ? chown() ?????????Ƥ??ޤ??????????ܥ??å????󥯤򤿤ɤ??ޤ?????

??ͭ?? ID ?ޤ??ϥ??롼?? ID ?Ȥ??? -1 ?????ꤷ?????硢 ???? ID ???ѹ??????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.

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chown() ?? lchown() ?ϡ????ξ????˽????????Ԥ??ơ??ե????????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?ե????뤬¸?ߤ??ޤ?????

[EACCES]

???ꤵ?줿?ѥ??ˤϡ??????????Ĥ????Ƥ??ʤ??ǥ??쥯?ȥ꤬?ޤޤ??Ƥ??ޤ???

[ELOOP]

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

[EPERM]

?¸??桼?? ID ???????ѥ桼???Ǥ????ޤ?????

[EROFS]

???ꤵ?줿?ե????????ɼ??????ѥե????륷???ƥ????ˤ????ޤ???

[EFAULT]

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

[EIO]

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

fchown() ?????ƥॳ?????ϡ????ξ????˼??Ԥ??ޤ?:

[EBADF]

fd ??????ͭ???ʵ??һҤǤϤ????ޤ?????

[EINVAL]

fd ???????ե??????ǤϤʤ??????åȤ򻲾Ȥ??Ƥ??ޤ???

[EPERM]

?¸??桼?? ID ???????ѥ桼???ǤϤ????ޤ?????

[EROFS]

?????Υե????????ɼ??????ѥե????륷???ƥ??˾??󤷤Ƥ??ޤ???

[EIO]

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

??Ϣ????

chgrp(1), chmod(2), flock(2), chown(8)

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

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chown() ?ؿ??? Version 7 AT&T UNIX ???о줷?ޤ????? fchown() ?????ƥॳ?????? 4.2BSD ???о줷?ޤ?????

chown() ?????ƥॳ?????? 4.4BSD ?ǥ????ܥ??å????󥯤򤿤ɤ??褦???ѹ??????ޤ????? lchown() ?????ƥॳ?????ϡ???ǽ?η??????佼???뤿???? FreeBSD 3.0 ???ɲä????ޤ?????