Differential D46709 Diff 143505 sys/fs/unionfs/union_subr.c

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sys/fs/unionfs/union_subr.c

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*/		*/
int		int
unionfs_create_uppervattr(struct unionfs_mount ump, struct vnode lvp,		unionfs_create_uppervattr(struct unionfs_mount ump, struct vnode lvp,
struct vattr uva, struct ucred cred, struct thread *td)		struct vattr uva, struct ucred cred, struct thread *td)
{		{
struct vattr lva;		struct vattr lva;
int error;		int error;

if ((error = VOP_GETATTR(lvp, &lva, cred)))		if ((error = VOP_GETATTR(lvp, 0, &lva, cred)))
return (error);		return (error);

unionfs_create_uppervattr_core(ump, &lva, uva, td);		unionfs_create_uppervattr_core(ump, &lva, uva, td);

return (error);		return (error);
}		}

/*		/*
▲ Show 20 Lines • Show All 220 Lines • ▼ Show 20 Lines	unionfs_mkshadowdir(struct vnode dvp, struct vnode vp,
change_ruid(cred, rootinfo);		change_ruid(cred, rootinfo);
change_svuid(cred, (uid_t)0);		change_svuid(cred, (uid_t)0);
uifree(rootinfo);		uifree(rootinfo);
cnp->cn_cred = cred;		cnp->cn_cred = cred;

memset(&nd.ni_cnd, 0, sizeof(struct componentname));		memset(&nd.ni_cnd, 0, sizeof(struct componentname));
NDPREINIT(&nd);		NDPREINIT(&nd);

if ((error = VOP_GETATTR(lvp, &lva, cnp->cn_cred)))		if ((error = VOP_GETATTR(lvp, 0, &lva, cnp->cn_cred)))
goto unionfs_mkshadowdir_finish;		goto unionfs_mkshadowdir_finish;

vref(udvp);		vref(udvp);
VOP_UNLOCK(vp);		VOP_UNLOCK(vp);
if ((error = unionfs_relookup(udvp, &uvp, cnp, &nd.ni_cnd, td,		if ((error = unionfs_relookup(udvp, &uvp, cnp, &nd.ni_cnd, td,
cnp->cn_nameptr, cnp->cn_namelen, CREATE))) {		cnp->cn_nameptr, cnp->cn_namelen, CREATE))) {
/*		/*
* When handling error cases here, we drop udvp's lock and		* When handling error cases here, we drop udvp's lock and
▲ Show 20 Lines • Show All 342 Lines • ▼ Show 20 Lines	unionfs_vn_create_on_upper(struct vnode *vpp, struct vnode udvp,
unp = VTOUNIONFS(vp);		unp = VTOUNIONFS(vp);
ump = MOUNTTOUNIONFSMOUNT(UNIONFSTOV(unp)->v_mount);		ump = MOUNTTOUNIONFSMOUNT(UNIONFSTOV(unp)->v_mount);
uvp = NULLVP;		uvp = NULLVP;
lvp = unp->un_lowervp;		lvp = unp->un_lowervp;
cred = td->td_ucred;		cred = td->td_ucred;
fmode = FFLAGS(O_WRONLY \| O_CREAT \| O_TRUNC \| O_EXCL);		fmode = FFLAGS(O_WRONLY \| O_CREAT \| O_TRUNC \| O_EXCL);
error = 0;		error = 0;

if ((error = VOP_GETATTR(lvp, &lva, cred)) != 0)		if ((error = VOP_GETATTR(lvp, 0, &lva, cred)) != 0)
return (error);		return (error);
unionfs_create_uppervattr_core(ump, &lva, uvap, td);		unionfs_create_uppervattr_core(ump, &lva, uvap, td);

if (unp->un_path == NULL)		if (unp->un_path == NULL)
panic("%s: NULL un_path", __func__);		panic("%s: NULL un_path", __func__);

nd.ni_cnd.cn_namelen = unp->un_pathlen;		nd.ni_cnd.cn_namelen = unp->un_pathlen;
nd.ni_cnd.cn_pnbuf = unp->un_path;		nd.ni_cnd.cn_pnbuf = unp->un_path;
▲ Show 20 Lines • Show All 272 Lines • ▼ Show 20 Lines	unionfs_check_rmdir(struct vnode vp, struct ucred cred, struct thread *td)
* do sufficient tracking of empty state within the unionfs vnode		* do sufficient tracking of empty state within the unionfs vnode
* (in conjunction with upcalls from the lower FSes to notify us		* (in conjunction with upcalls from the lower FSes to notify us
* of out-of-band state changes) that we can avoid these costly checks		* of out-of-band state changes) that we can avoid these costly checks
* altogether.		* altogether.
*/		*/
ASSERT_VOP_LOCKED(lvp, __func__);		ASSERT_VOP_LOCKED(lvp, __func__);
ASSERT_VOP_ELOCKED(uvp, __func__);		ASSERT_VOP_ELOCKED(uvp, __func__);

if ((error = VOP_GETATTR(uvp, &va, cred)) != 0)		if ((error = VOP_GETATTR(uvp, 0, &va, cred)) != 0)
return (error);		return (error);
if (va.va_flags & OPAQUE)		if (va.va_flags & OPAQUE)
return (0);		return (0);

#ifdef MAC		#ifdef MAC
if ((error = mac_vnode_check_open(cred, lvp, VEXEC \| VREAD)) != 0)		if ((error = mac_vnode_check_open(cred, lvp, VEXEC \| VREAD)) != 0)
return (error);		return (error);
#endif		#endif
if ((error = VOP_ACCESS(lvp, VEXEC \| VREAD, cred, td)) != 0)		if ((error = VOP_ACCESS(lvp, VEXEC \| VREAD, cred, td)) != 0)
return (error);		return (error);
if ((error = VOP_OPEN(lvp, FREAD, cred, td, NULL)) != 0)		if ((error = VOP_OPEN(lvp, FREAD, cred, td, NULL)) != 0)
return (error);		return (error);
if ((error = VOP_GETATTR(lvp, &va, cred)) != 0)		if ((error = VOP_GETATTR(lvp, 0, &va, cred)) != 0)
return (error);		return (error);

dirbuflen = max(DEV_BSIZE, GENERIC_MAXDIRSIZ);		dirbuflen = max(DEV_BSIZE, GENERIC_MAXDIRSIZ);
if (dirbuflen < va.va_blocksize)		if (dirbuflen < va.va_blocksize)
dirbuflen = va.va_blocksize;		dirbuflen = va.va_blocksize;
dirbuf = malloc(dirbuflen, M_TEMP, M_WAITOK);		dirbuf = malloc(dirbuflen, M_TEMP, M_WAITOK);

len = 0;		len = 0;
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