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VOP_LINK — ?ե??????ο?????̾???κ???

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<sys/param.h> <sys/vnode.h> int VOP_LINK(struct vnode *dvp, struct vnode *vp, struct componentname *cnp)

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?????ϰʲ????̤??Ǥ???

dvp

?ǥ??쥯?ȥ??? vnode??

vp

???󥯤??????ե??????? vnode??

cnp

?ե??????ˤĤ??ƤΥѥ?̾??????

?ѥ?̾?????????????˳??????????٤??Ǥ? ?????ޤ??? ?? ?ʤ??ʤ??С??????ϸƤӽФ?¦?ˤ??äƹԤʤ????뤫???Ǥ??? ?ǥ??쥯?ȥ??ȥե??????? vnode ?????????˲??????????٤??Ǥ? ?????ޤ??? ??

???å?

VOP_LINK() ?ϥǥ??쥯?ȥꤪ???ӥե??????? vnode ?????????˥??å????졢???????ޤ? ???å?????³???Ƥ??뤳?Ȥ????Ԥ??ޤ???

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?ե????뤬????΢?˥??󥯤??줿?????ˤ? 0 ???֤??졢 ?????Ǥʤ??????ˤϥ??顼???֤????ޤ???

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int
vop_link(struct vnode *dvp, struct vnode *vp, struct componentname *cnp)
{
    int error = 0;

    if (vp->v_mount != dvp->v_mount)
	return (EXDEV);

    if (vp would have too many links)
	return (EMLINK);

    if (vp is immutable)
	return (EPERM);

    /*
     * vp ?Υ??󥯥??????Ȥ򥤥󥯥??????Ȥ????ǥ??????˽????ᤷ?ޤ???
     */
    ...;

    if (!error) {
	/*
	 * ?ǥ??쥯?ȥ??ο?????̾?????ɲä??ޤ???
	 */
	...;
    }

    return error;
}

???顼

[EMLINK]

?ե??????Υ??󥯤ο???¿?????ޤ???

[EPERM]

?ե????뤬?ѹ??Բ?ǽ?Ǥ???

[EXDEV]

?ۤʤ??ե????륷???ƥ??֤Ǥϥϡ??ɥ??󥯤????ѤǤ??ޤ?????

??Ϣ????

vn_lock(9), vnode(9)

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???Υޥ˥奢???ڡ????? Doug Rabson ???????ƽ񤭤ޤ?????