Supply default implementation of VOP_RENAME() that does neccessary
unlocks and unreferences for argument vnodes, as expected by kern_renameat(9), and returns EOPNOTSUPP. This fixes locks and reference leaks when rename is attempted on fs that does not implement rename. PR: kern/107439 Based on submission by: Mikolaj Golub <to.my.trociny gmail com> Tested by: Mikolaj Golub MFC after: 1 week
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parent
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=206094
@ -67,6 +67,7 @@ __FBSDID("$FreeBSD$");
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#include <vm/vnode_pager.h>
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static int vop_nolookup(struct vop_lookup_args *);
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static int vop_norename(struct vop_rename_args *);
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static int vop_nostrategy(struct vop_strategy_args *);
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static int get_next_dirent(struct vnode *vp, struct dirent **dpp,
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char *dirbuf, int dirbuflen, off_t *off,
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@ -113,6 +114,7 @@ struct vop_vector default_vnodeops = {
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.vop_poll = vop_nopoll,
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.vop_putpages = vop_stdputpages,
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.vop_readlink = VOP_EINVAL,
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.vop_rename = vop_norename,
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.vop_revoke = VOP_PANIC,
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.vop_strategy = vop_nostrategy,
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.vop_unlock = vop_stdunlock,
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@ -205,6 +207,20 @@ vop_nolookup(ap)
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return (ENOTDIR);
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}
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/*
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* vop_norename:
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*
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* Handle unlock and reference counting for arguments of vop_rename
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* for filesystems that do not implement rename operation.
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*/
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static int
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vop_norename(struct vop_rename_args *ap)
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{
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vop_rename_fail(ap);
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return (EOPNOTSUPP);
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}
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/*
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* vop_nostrategy:
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*
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