- Remove UMAP filesystem. It was disconnected from build three years ago,

  and it is seriously broken.

Discussed on:   freebsd-arch@
Approved by:	re (mux)

1 files changed, 0 insertions, 534 deletions

diff --git a/sys/fs/umapfs/umap_vnops.c b/sys/fs/umapfs/umap_vnops.c
deleted file mode 100644
index 45703be..0000000
--- a/sys/fs/umapfs/umap_vnops.c
+++ /dev/null
@@ -1,534 +0,0 @@
-/*-
- * Copyright (c) 1992, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
- * This code is derived from software donated to Berkeley by
- * the UCLA Ficus project.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *	@(#)umap_vnops.c	8.6 (Berkeley) 5/22/95
- * $FreeBSD$
- */
-
-/*
- * Umap Layer
- */
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/kernel.h>
-#include <sys/lock.h>
-#include <sys/malloc.h>
-#include <sys/mount.h>
-#include <sys/namei.h>
-#include <sys/sysctl.h>
-#include <sys/vnode.h>
-
-#include <fs/umapfs/umap.h>
-#include <fs/nullfs/null.h>
-
-static int umap_bug_bypass = 0;   /* for debugging: enables bypass printf'ing */
-SYSCTL_INT(_debug, OID_AUTO, umapfs_bug_bypass, CTLFLAG_RW,
-	&umap_bug_bypass, 0, "");
-
-static vop_generic_t	umap_bypass;
-static vop_getattr_t	umap_getattr;
-static vop_inactive_t	umap_inactive;
-static vop_lock1_t	umap_lock;
-static vop_print_t	umap_print;
-static vop_reclaim_t	umap_reclaim;
-static vop_rename_t	umap_rename;
-static vop_unlock_t	umap_unlock;
-static vop_vptofh_t	umap_vptofh;
-
-/*
- * This is the 10-Apr-92 bypass routine.
- * See null_vnops.c:null_bypass for more details.
- */
-static int
-umap_bypass(ap)
-	struct vop_generic_args /* {
-		struct vnodeop_desc *a_desc;
-		<other random data follows, presumably>
-	} */ *ap;
-{
-	struct ucred **credpp = 0, *credp = 0;
-	struct ucred *savecredp = 0, *savecompcredp = 0;
-	struct ucred *compcredp = 0;
-	struct vnode **this_vp_p;
-	int error;
-	struct vnode *old_vps[VDESC_MAX_VPS];
-	struct vnode *vp1 = 0;
-	struct vnode **vps_p[VDESC_MAX_VPS];
-	struct vnode ***vppp;
-	struct vnodeop_desc *descp = ap->a_desc;
-	int reles, i;
-	struct componentname **compnamepp = 0;
-
-	if (umap_bug_bypass)
-		printf ("umap_bypass: %s\n", descp->vdesc_name);
-
-#ifdef DIAGNOSTIC
-	/*
-	 * We require at least one vp.
-	 */
-	if (descp->vdesc_vp_offsets == NULL ||
-	    descp->vdesc_vp_offsets[0] == VDESC_NO_OFFSET)
-		panic ("umap_bypass: no vp's in map");
-#endif
-
-	/*
-	 * Map the vnodes going in.
-	 * Later, we'll invoke the operation based on
-	 * the first mapped vnode's operation vector.
-	 */
-	reles = descp->vdesc_flags;
-	for (i = 0; i < VDESC_MAX_VPS; reles >>= 1, i++) {
-		if (descp->vdesc_vp_offsets[i] == VDESC_NO_OFFSET)
-			break;   /* bail out at end of list */
-		vps_p[i] = this_vp_p =
-			VOPARG_OFFSETTO(struct vnode**, descp->vdesc_vp_offsets[i], ap);
-
-		if (i == 0) {
-			vp1 = *vps_p[0];
-		}
-
-		/*
-		 * We're not guaranteed that any but the first vnode
-		 * are of our type.  Check for and don't map any
-		 * that aren't.  (Must map first vp or vclean fails.)
-		 */
-
-		if (i && (*this_vp_p)->v_op != umap_vnodeop_p) {
-			old_vps[i] = NULL;
-		} else {
-			old_vps[i] = *this_vp_p;
-			*(vps_p[i]) = UMAPVPTOLOWERVP(*this_vp_p);
-			if (reles & 1)
-				VREF(*this_vp_p);
-		}
-
-	}
-
-	/*
-	 * Fix the credentials.  (That's the purpose of this layer.)
-	 */
-
-	if (descp->vdesc_cred_offset != VDESC_NO_OFFSET) {
-
-		credpp = VOPARG_OFFSETTO(struct ucred**,
-		    descp->vdesc_cred_offset, ap);
-
-		/* Save old values */
-
-		savecredp = (*credpp);
-		if (savecredp != NOCRED)
-			(*credpp) = crdup(savecredp);
-		credp = *credpp;
-
-		if (umap_bug_bypass && credp->cr_uid != 0)
-			printf("umap_bypass: user was %lu, group %lu\n",
-			    (u_long)credp->cr_uid, (u_long)credp->cr_gid);
-
-		/* Map all ids in the credential structure. */
-
-		umap_mapids(vp1->v_mount, credp);
-
-		if (umap_bug_bypass && credp->cr_uid != 0)
-			printf("umap_bypass: user now %lu, group %lu\n",
-			    (u_long)credp->cr_uid, (u_long)credp->cr_gid);
-	}
-
-	/* BSD often keeps a credential in the componentname structure
-	 * for speed.  If there is one, it better get mapped, too.
-	 */
-
-	if (descp->vdesc_componentname_offset != VDESC_NO_OFFSET) {
-
-		compnamepp = VOPARG_OFFSETTO(struct componentname**,
-		    descp->vdesc_componentname_offset, ap);
-
-		compcredp = (*compnamepp)->cn_cred;
-		savecompcredp = compcredp;
-		if (savecompcredp != NOCRED)
-			(*compnamepp)->cn_cred = crdup(savecompcredp);
-		compcredp = (*compnamepp)->cn_cred;
-
-		if (umap_bug_bypass && compcredp->cr_uid != 0)
-			printf(
-		    "umap_bypass: component credit user was %lu, group %lu\n",
-			    (u_long)compcredp->cr_uid,
-			    (u_long)compcredp->cr_gid);
-
-		/* Map all ids in the credential structure. */
-
-		umap_mapids(vp1->v_mount, compcredp);
-
-		if (umap_bug_bypass && compcredp->cr_uid != 0)
-			printf(
-		    "umap_bypass: component credit user now %lu, group %lu\n",
-			    (u_long)compcredp->cr_uid,
-			    (u_long)compcredp->cr_gid);
-	}
-
-	/*
-	 * Call the operation on the lower layer
-	 * with the modified argument structure.
-	 */
-	error = VCALL(ap);
-
-	/*
-	 * Maintain the illusion of call-by-value
-	 * by restoring vnodes in the argument structure
-	 * to their original value.
-	 */
-	reles = descp->vdesc_flags;
-	for (i = 0; i < VDESC_MAX_VPS; reles >>= 1, i++) {
-		if (descp->vdesc_vp_offsets[i] == VDESC_NO_OFFSET)
-			break;   /* bail out at end of list */
-		if (old_vps[i]) {
-			*(vps_p[i]) = old_vps[i];
-			if (reles & 1)
-				vrele(*(vps_p[i]));
-		};
-	};
-
-	/*
-	 * Map the possible out-going vpp
-	 * (Assumes that the lower layer always returns
-	 * a VREF'ed vpp unless it gets an error.)
-	 */
-	if (descp->vdesc_vpp_offset != VDESC_NO_OFFSET &&
-	    !(descp->vdesc_flags & VDESC_NOMAP_VPP) &&
-	    !error) {
-		if (descp->vdesc_flags & VDESC_VPP_WILLRELE)
-			goto out;
-		vppp = VOPARG_OFFSETTO(struct vnode***,
-				 descp->vdesc_vpp_offset, ap);
-		if (*vppp)
-			error = umap_node_create(old_vps[0]->v_mount, **vppp, *vppp);
-	};
-
- out:
-	/*
-	 * Free duplicate cred structure and restore old one.
-	 */
-	if (descp->vdesc_cred_offset != VDESC_NO_OFFSET) {
-		if (umap_bug_bypass && credp && credp->cr_uid != 0)
-			printf("umap_bypass: returning-user was %lu\n",
-			    (u_long)credp->cr_uid);
-
-		if (savecredp != NOCRED) {
-			crfree(credp);
-			(*credpp) = savecredp;
-			if (umap_bug_bypass && credpp && (*credpp)->cr_uid != 0)
-				printf(
-				    "umap_bypass: returning-user now %lu\n\n",
-				    (u_long)(*credpp)->cr_uid);
-		}
-	}
-
-	if (descp->vdesc_componentname_offset != VDESC_NO_OFFSET) {
-		if (umap_bug_bypass && compcredp && compcredp->cr_uid != 0)
-			printf(
-			    "umap_bypass: returning-component-user was %lu\n",
-			    (u_long)compcredp->cr_uid);
-
-		if (savecompcredp != NOCRED) {
-			crfree(compcredp);
-			(*compnamepp)->cn_cred = savecompcredp;
-			if (umap_bug_bypass && credpp && (*credpp)->cr_uid != 0)
-				printf(
-			    "umap_bypass: returning-component-user now %lu\n",
-				    (u_long)compcredp->cr_uid);
-		}
-	}
-
-	return (error);
-}
-
-
-/*
- *  We handle getattr to change the fsid.
- */
-static int
-umap_getattr(ap)
-	struct vop_getattr_args /* {
-		struct vnode *a_vp;
-		struct vattr *a_vap;
-		struct ucred *a_cred;
-		struct thread *a_td;
-	} */ *ap;
-{
-	short uid, gid;
-	int error, tmpid, nentries, gnentries;
-	u_long (*mapdata)[2], (*gmapdata)[2];
-	struct vnode **vp1p;
-	struct vnodeop_desc *descp = ap->a_desc;
-
-	error = umap_bypass((struct vop_generic_args *)ap);
-	if (error)
-		return (error);
-
-	/*
-	 * Umap needs to map the uid and gid returned by a stat
-	 * into the proper values for this site.  This involves
-	 * finding the returned uid in the mapping information,
-	 * translating it into the uid on the other end,
-	 * and filling in the proper field in the vattr
-	 * structure pointed to by ap->a_vap.  The group
-	 * is easier, since currently all groups will be
-	 * translate to the NULLGROUP.
-	 */
-
-	/* Find entry in map */
-
-	uid = ap->a_vap->va_uid;
-	gid = ap->a_vap->va_gid;
-	if (umap_bug_bypass)
-		printf("umap_getattr: mapped uid = %d, mapped gid = %d\n", uid,
-		    gid);
-
-	vp1p = VOPARG_OFFSETTO(struct vnode**, descp->vdesc_vp_offsets[0], ap);
-	nentries =  MOUNTTOUMAPMOUNT((*vp1p)->v_mount)->info_nentries;
-	mapdata =  (MOUNTTOUMAPMOUNT((*vp1p)->v_mount)->info_mapdata);
-	gnentries =  MOUNTTOUMAPMOUNT((*vp1p)->v_mount)->info_gnentries;
-	gmapdata =  (MOUNTTOUMAPMOUNT((*vp1p)->v_mount)->info_gmapdata);
-
-	/* Reverse map the uid for the vnode.  Since it's a reverse
-		map, we can't use umap_mapids() to do it. */
-
-	tmpid = umap_reverse_findid(uid, mapdata, nentries);
-
-	if (tmpid != -1) {
-
-		ap->a_vap->va_uid = (uid_t) tmpid;
-		if (umap_bug_bypass)
-			printf("umap_getattr: original uid = %d\n", uid);
-	} else
-		ap->a_vap->va_uid = (uid_t) NOBODY;
-
-	/* Reverse map the gid for the vnode. */
-
-	tmpid = umap_reverse_findid(gid, gmapdata, gnentries);
-
-	if (tmpid != -1) {
-
-		ap->a_vap->va_gid = (gid_t) tmpid;
-		if (umap_bug_bypass)
-			printf("umap_getattr: original gid = %d\n", gid);
-	} else
-		ap->a_vap->va_gid = (gid_t) NULLGROUP;
-
-	return (0);
-}
-
-/*
- * We need to process our own vnode lock and then clear the
- * interlock flag as it applies only to our vnode, not the
- * vnodes below us on the stack.
- */
-static int
-umap_lock(ap)
-	struct vop_lock1_args /* {
-		struct vnode *a_vp;
-		int a_flags;
-		struct thread *a_td;
-	} */ *ap;
-{
-
-	/*
-	 * vop_nolock no longer exists.  I could have pasted the code
-	 * in so that it compiles, but that would be doing our users a
-	 * great disservice.  umapfs is about 5 years behind the nullfs
-	 * code that it is derived from.  The stub locking here guarantees
-	 * a deadlock the moment a VOP_INACTIVE arrives.  There is no point
-	 * pasting the code that makes it compile either, because that just
-	 * makes it Even More Wrong.
-	 */
-	vop_nolock(ap);
-	if ((ap->a_flags & LK_TYPE_MASK) == LK_DRAIN)
-		return (0);
-	ap->a_flags &= ~LK_INTERLOCK;
-	return (null_bypass((struct vop_generic_args *)ap));
-}
-
-/*
- * We need to process our own vnode unlock and then clear the
- * interlock flag as it applies only to our vnode, not the
- * vnodes below us on the stack.
- */
-static int
-umap_unlock(ap)
-	struct vop_unlock_args /* {
-		struct vnode *a_vp;
-		int a_flags;
-		struct thread *a_td;
-	} */ *ap;
-{
-	vop_nounlock(ap);
-	ap->a_flags &= ~LK_INTERLOCK;
-	return (null_bypass((struct vop_generic_args *)ap));
-}
-
-static int
-umap_inactive(ap)
-	struct vop_inactive_args /* {
-		struct vnode *a_vp;
-		struct thread *a_td;
-	} */ *ap;
-{
-	struct vnode *vp = ap->a_vp;
-	struct umap_node *xp = VTOUMAP(vp);
-	struct vnode *lowervp = xp->umap_lowervp;
-	/*
-	 * Do nothing (and _don't_ bypass).
-	 * Wait to vrele lowervp until reclaim,
-	 * so that until then our umap_node is in the
-	 * cache and reusable.
-	 *
-	 */
-	VOP_INACTIVE(lowervp, ap->a_td);
-	return (0);
-}
-
-static int
-umap_reclaim(ap)
-	struct vop_reclaim_args /* {
-		struct vnode *a_vp;
-	} */ *ap;
-{
-	struct vnode *vp = ap->a_vp;
-	struct umap_node *xp = VTOUMAP(vp);
-	struct vnode *lowervp = xp->umap_lowervp;
-
-	/* After this assignment, this node will not be re-used. */
-	xp->umap_lowervp = NULL;
-	LIST_REMOVE(xp, umap_hash);
-	FREE(vp->v_data, M_TEMP);
-	vp->v_data = NULL;
-	vp->v_object = NULL;
-	vrele(lowervp);
-	return (0);
-}
-
-static int
-umap_print(ap)
-	struct vop_print_args /* {
-		struct vnode *a_vp;
-	} */ *ap;
-{
-	struct vnode *vp = ap->a_vp;
-	printf("\tvp=%p, lowervp=%p\n", vp, UMAPVPTOLOWERVP(vp));
-	return (0);
-}
-
-static int
-umap_rename(ap)
-	struct vop_rename_args  /* {
-		struct vnode *a_fdvp;
-		struct vnode *a_fvp;
-		struct componentname *a_fcnp;
-		struct vnode *a_tdvp;
-		struct vnode *a_tvp;
-		struct componentname *a_tcnp;
-	} */ *ap;
-{
-	int error;
-	struct componentname *compnamep;
-	struct ucred *compcredp, *savecompcredp;
-	struct vnode *vp;
-
-	/*
-	 * Rename is irregular, having two componentname structures.
-	 * We need to map the cre in the second structure,
-	 * and then bypass takes care of the rest.
-	 */
-
-	vp = ap->a_fdvp;
-	compnamep = ap->a_tcnp;
-	compcredp = compnamep->cn_cred;
-
-	savecompcredp = compcredp;
-	compcredp = compnamep->cn_cred = crdup(savecompcredp);
-
-	if (umap_bug_bypass && compcredp->cr_uid != 0)
-		printf(
-	    "umap_rename: rename component credit user was %lu, group %lu\n",
-		    (u_long)compcredp->cr_uid, (u_long)compcredp->cr_gid);
-
-	/* Map all ids in the credential structure. */
-
-	umap_mapids(vp->v_mount, compcredp);
-
-	if (umap_bug_bypass && compcredp->cr_uid != 0)
-		printf(
-	    "umap_rename: rename component credit user now %lu, group %lu\n",
-		    (u_long)compcredp->cr_uid, (u_long)compcredp->cr_gid);
-
-	error = umap_bypass((struct vop_generic_args *)ap);
-
-	/* Restore the additional mapped componentname cred structure. */
-
-	crfree(compcredp);
-	compnamep->cn_cred = savecompcredp;
-
-	return error;
-}
-
-static int
-umap_vptofh(ap)
-	struct vop_vptofh_args /* {
-		struct vnode *a_vp;
-		struct fid *a_fhp;
-	} */ *ap;
-{
-	struct vnode *lvp;
-
-	lvp = UMAPVPTOLOWERVP(ap->a_vp);
-	return (VOP_VPTOFH(lvp, ap->a_fhp));
-}
-
-/*
- * Global vfs data structures
- */
-/*
- * XXX - strategy, bwrite are hand coded currently.  They should
- * go away with a merged buffer/block cache.
- *
- */
-static struct vop_vector umap_vnodeops = {
-	.vop_default =		umap_bypass,
-
-	.vop_getattr =		umap_getattr,
-	.vop_inactive =		umap_inactive,
-	.vop_lock1 =		umap_lock,
-	.vop_print =		umap_print,
-	.vop_reclaim =		umap_reclaim,
-	.vop_rename =		umap_rename,
-	.vop_unlock =		umap_unlock,
-	.vop_vptofh =		umap_vptofh,
-};