Import of xfs from arla-0.35.7

1 files changed, 381 insertions, 0 deletions

diff --git a/sys/xfs/xfs_vfsops-bsd.c b/sys/xfs/xfs_vfsops-bsd.c
new file mode 100644
index 00000000000..723cb1aa1d8
--- /dev/null
+++ b/sys/xfs/xfs_vfsops-bsd.c
@@ -0,0 +1,381 @@
+/*
+ * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by the Kungliga Tekniska
+ *      Högskolan and its contributors.
+ *
+ * 4. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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.
+ */
+
+#include <xfs/xfs_locl.h>
+
+RCSID("$Id: xfs_vfsops-bsd.c,v 1.1 1999/04/30 01:59:01 art Exp $");
+
+/*
+ * XFS vfs operations.
+ */
+
+#include <xfs/xfs_common.h>
+#include <xfs/xfs_message.h>
+#include <xfs/xfs_fs.h>
+#include <xfs/xfs_dev.h>
+#include <xfs/xfs_deb.h>
+#include <xfs/xfs_vfsops.h>
+#include <xfs/xfs_vfsops-bsd.h>
+#include <xfs/xfs_vnodeops.h>
+
+int
+xfs_mount(struct mount *mp,
+	  const char *user_path,
+	  caddr_t user_data,
+	  struct nameidata *ndp,
+	  struct proc *p)
+{
+    return xfs_mount_common(mp, user_path, user_data, ndp, p);
+}
+
+int
+xfs_start(struct mount * mp, int flags, struct proc * p)
+{
+    XFSDEB(XDEBVFOPS, ("xfs_start mp = %p, flags = %d, proc = %p\n", 
+		       mp, flags, p));
+    return 0;
+}
+
+
+int
+xfs_unmount(struct mount * mp, int mntflags, struct proc *p)
+{
+    XFSDEB(XDEBVFOPS, ("xfs_umount: mp = %p, mntflags = %d, proc = %p\n", 
+		       mp, mntflags, p));
+    return xfs_unmount_common(mp, mntflags);
+}
+
+int
+xfs_root(struct mount *mp, struct vnode **vpp)
+{
+    XFSDEB(XDEBVFOPS, ("xfs_root mp = %p\n", mp));
+    return xfs_root_common(mp, vpp, curproc, curproc->p_ucred);
+}
+
+int
+xfs_quotactl(struct mount *mp, int cmd, uid_t uid, caddr_t arg, struct proc *p)
+{
+    XFSDEB(XDEBVFOPS, ("xfs_quotactl: mp = %p, cmd = %d, uid = %u, "
+		       "arg = %p, proc = %p\n", 
+		       mp, cmd, uid, arg, p));
+    return EOPNOTSUPP;
+}
+
+int
+xfs_statfs(struct mount *mp, struct statfs *sbp, struct proc *p)
+{
+    XFSDEB(XDEBVFOPS, ("xfs_statfs: mp = %p, sbp = %p, proc = %p\n", 
+		       mp, sbp, p));
+    bcopy(&mp->mnt_stat, sbp, sizeof(*sbp));
+    return 0;
+}
+
+int
+xfs_sync(struct mount *mp, int waitfor, struct ucred *cred, struct proc *p)
+{
+    XFSDEB(XDEBVFOPS, ("xfs_sync: mp = %p, waitfor = %d, "
+		       "cred = %p, proc = %p\n",
+		       mp, waitfor, cred, p));
+    return 0;
+}
+
+int
+xfs_vget(struct mount * mp,
+	 ino_t ino,
+	 struct vnode ** vpp)
+{
+    XFSDEB(XDEBVFOPS, ("xfs_vget\n"));
+    return EOPNOTSUPP;
+}
+
+int
+xfs_fhtovp(struct mount * mp,
+	   struct fid * fhp,
+	   struct mbuf * nam,
+	   struct vnode ** vpp,
+	   int *exflagsp,
+	   struct ucred ** credanonp)
+{
+#ifdef ARLA_KNFS
+    static struct ucred fhtovpcred;
+    struct netcred *np = NULL;
+    struct xfs_node *xn;
+    struct vnode *vp;
+    xfs_handle handle;
+    int error;
+
+    XFSDEB(XDEBVFOPS, ("xfs_fhtovp\n"));
+
+    if (fhp->fid_len != 16) {
+	printf("xfs_fhtovp: *PANIC* got a invalid length of a fid\n");
+	return EINVAL;
+    }
+
+    /* XXX: Should see if we is exported to this client */
+#if 0
+    np = vfs_export_lookup(mp, &ump->um_export, nam);
+    if (np == NULL)
+	return EACCES;
+#endif
+
+    memcpy(&handle, fhp->fid_data, sizeof(handle));
+    XFSDEB(XDEBVFOPS, ("xfs_fhtovp: fid: %d.%d.%d.%d\n", 
+		       handle.a, handle.d, handle.c, handle.d));
+
+    XFSDEB(XDEBVFOPS, ("xfs_fhtovp: xfs_vnode_find\n"));
+    xn = xfs_node_find(&xfs[0], &handle); /* XXX: 0 */
+
+    if (xn == NULL) {
+	struct xfs_message_getattr msg;
+
+        error = xfs_getnewvnode(xfs[0].mp, &vp, &handle);
+        if (error)
+            return error;
+	
+	xfs_do_vget(vp, 0, current);
+
+    } else {
+	/* XXX access ? */
+	vp = XNODE_TO_VNODE(xn);
+
+	/* XXX wrong ? (we tell arla below) */
+        if (vp->v_usecount <= 0) 
+	    xfs_do_vget(vp, 0, current);
+	else
+	    VREF(vp);
+	error = 0;
+    }
+
+    if (error == 0) {
+	fhtovpcred.cr_uid = 0;
+	fhtovpcred.cr_gid = 0;
+	fhtovpcred.cr_ngroups = 0;
+      
+	*vpp = vp;
+#ifdef MNT_EXPUBLIC
+	*exflagsp = MNT_EXPUBLIC;
+#else
+	*exflagsp = 0;
+#endif
+	*credanonp = &fhtovpcred;
+
+	XFSDEB(XDEBVFOPS, ("xfs_fhtovp done\n"));
+
+	/* 
+	 * XXX tell arla about this node is hold by nfsd.
+	 * There need to be code in xfs_write too.
+	 */
+    } else
+	XFSDEB(XDEBVFOPS, ("xfs_fhtovp failed (%d);", error));
+
+    return error;
+#else
+    return EOPNOTSUPP;
+#endif
+}
+
+int
+xfs_vptofh(struct vnode * vp,
+	   struct fid * fhp)
+{
+#ifdef ARLA_KNFS
+    struct xfs_node *xn;
+    XFSDEB(XDEBVFOPS, ("xfs_vptofh\n"));
+
+    if (MAXFIDSZ < 16)
+	return EOPNOTSUPP;
+
+    xn = VNODE_TO_XNODE(vp);
+
+    if (xn == NULL)
+	return EINVAL;
+
+    fhp->fid_len = 16;
+    memcpy(fhp->fid_data, &xn->handle,  16);
+
+    return 0;
+#else
+    XFSDEB(XDEBVFOPS, ("xfs_vptofh\n"));
+    return EOPNOTSUPP;
+#endif
+}
+
+/* 
+ * xfs complete dead vnodes implementation.
+ *
+ * this is because the dead_vnodeops_p is _not_ filesystem, but rather
+ * a part of the vfs-layer.  
+ */
+
+int
+xfs_dead_lookup(struct vop_lookup_args * ap)
+     /* struct vop_lookup_args {
+	struct vnodeop_desc *a_desc;
+	struct vnode *a_dvp;
+	struct vnode **a_vpp;
+	struct componentname *a_cnp;
+}; */
+{
+    *ap->a_vpp = NULL;
+    return ENOTDIR;
+}
+
+/* 
+ * Given `fsid', `fileid', and `gen', return in `vpp' a locked and
+ * ref'ed vnode from that file system with that id and generation.
+ * All is done in the context of `proc'.  Returns 0 if succesful, and
+ * error otherwise.  
+ */
+
+int
+xfs_fhlookup (struct proc *proc,
+	      fsid_t fsid,
+	      long fileid,
+	      long gen,
+	      struct vnode **vpp)
+{
+    int error;
+    struct mount *mp;
+    struct ucred *cred = proc->p_ucred;
+    struct vattr vattr;
+
+    XFSDEB(XDEBVFOPS, ("xfs_fhlookup: fileid = %ld\n",
+		       fileid));
+
+    error = suser (cred, NULL);
+    if (error)
+	return EPERM;
+
+#ifdef HAVE_KERNEL_VFS_GETVFS
+    mp = vfs_getvfs (&fsid);
+#else
+    mp = getvfs (&fsid);
+#endif
+    if (mp == NULL)
+	return ENXIO;
+
+    error = VFS_VGET(mp, fileid, vpp);
+
+    if (error)
+	return error;
+
+    error = VOP_GETATTR(*vpp, &vattr, cred, proc);
+    if (error) {
+	vput(*vpp);
+	return error;
+    }
+
+    if (vattr.va_gen != gen) {
+	vput(*vpp);
+	return ENOENT;
+    }
+
+#ifdef HAVE_KERNEL_VFS_OBJECT_CREATE
+    if ((*vpp)->v_type == VREG && (*vpp)->v_object == NULL)
+#if HAVE_FOUR_ARGUMENT_VFS_OBJECT_CREATE
+	vfs_object_create (*vpp, proc, proc->p_ucred, TRUE);
+#else
+	vfs_object_create (*vpp, proc, proc->p_ucred);
+#endif
+#endif
+    return 0;
+}
+
+/*
+ * Perform an open operation on the vnode identified by (fsid, fileid,
+ * gen) (see xfs_fhlookup) with flags `user_flags'.  Returns 0 or
+ * error.  If succsesful, the file descriptor is returned in `retval'.
+ */
+
+int
+xfs_fhopen (struct proc *proc,
+	    fsid_t fsid,
+	    long fileid,
+	    long gen,
+	    int user_flags,
+	    register_t *retval)
+{
+    int error;
+    struct vnode *vp;
+    struct ucred *cred = proc->p_ucred;
+    int flags = FFLAGS(user_flags);
+    int index;
+    struct file *fp;
+    extern struct fileops vnops;
+
+    XFSDEB(XDEBVFOPS, ("xfs_fhopen: fileid = %ld, flags = %d\n",
+		       fileid, user_flags));
+
+    error = xfs_fhlookup (proc, fsid, fileid, gen, &vp);
+    if (error)
+	return error;
+
+    error = VOP_OPEN(vp, flags, cred, proc);
+    if (error)
+	goto out;
+
+    error = falloc(proc, &fp, &index);
+    if (error)
+	goto out;
+
+    if (flags & FWRITE)
+        vp->v_writecount++;
+
+#if __FreeBSD_version >= 300000
+    if (vp->v_type == VREG) {
+#if HAVE_FOUR_ARGUMENT_VFS_OBJECT_CREATE
+	error = vfs_object_create(vp, proc, proc->p_cred->pc_ucred, 1);
+#else
+	error = vfs_object_create(vp, proc, proc->p_cred->pc_ucred);
+#endif
+	if (error)
+	    goto out;
+    }
+#endif
+
+    fp->f_flag = flags & FMASK;
+    fp->f_type = DTYPE_VNODE;
+    fp->f_ops  = &vnops;
+    fp->f_data = (caddr_t)vp;
+    xfs_vfs_unlock(vp, proc);
+    *retval = index;
+    return 0;
+out:
+    vput(vp);
+    return error;
+}