Initial revision

22 files changed, 676 insertions, 17 deletions

diff --git a/libdiskfs/dir-link.c b/libdiskfs/dir-link.c
new file mode 100644
index 00000000..dbc4677b
--- /dev/null
+++ b/libdiskfs/dir-link.c
@@ -0,0 +1,82 @@
+/* libdiskfs implementation of fs.defs: dir_link
+   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "priv.h"
+
+/* Implement dir_link as described in <hurd/fs.defs>. */
+error_t
+diskfs_S_dir_link (struct protid *filecred,
+		   struct protid *dircred,
+		   char *name)
+{
+  struct node *np;
+  struct node *dnp;
+  struct dirstat *ds = alloca (diskfs_dirstat_size);
+  error_t error;
+
+  if (!filecred)
+    return EOPNOTSUPP;
+  
+  np = filecred->po->np;
+  if (readonly)
+    return EROFS;
+  
+  if (!dircred)
+    return EXDEV;
+  
+  dnp = dircred->po->np;
+  mutex_lock (&dnp->lock);
+  /* This lock is safe since a non-directory is inherently a leaf */
+  /* XXX But we don't know yet that it is a non-directory */
+  mutex_lock (&np->lock);
+
+  if (S_ISDIR (np->dn_stat.st_mode))
+    error = EISDIR;
+  else if (np->dn_stat.st_nlink == LINK_MAX - 1)
+    error = EMLINK;
+  if (error)
+    goto out;
+
+  error = diskfs_lookup (dnp, name, CREATE, 0, ds, dircred);
+
+  if (error == EAGAIN)
+    error = EEXIST;
+  if (!error)
+    error = EEXIST;
+  if (error != ENOENT)
+    {
+      diskfs_drop_dirstat (ds);
+      goto out;
+    }
+  
+  np->dn_stat.st_nlink++;
+  np->dn_set_ctime = 1;
+  
+  diskfs_node_update (np, 1);
+
+  error =  diskfs_direnter (dnp, name, np, ds, dircred);
+  if (error)
+    {
+      np->dn_stat.st_nlink--;
+      np->dn_set_ctime = 1;
+    }
+
+ out:
+  mutex_unlock (&dnp->lock);
+  mutex_unlock (&np->lock);
+  return error;
+}
diff --git a/libdiskfs/dir-mkdir.c b/libdiskfs/dir-mkdir.c
index 17ce9db1..27d88602 100644
--- a/libdiskfs/dir-mkdir.c
+++ b/libdiskfs/dir-mkdir.c
@@ -1,5 +1,5 @@
 /* libdiskfs implementation of fs.defs: dir_mkdir
-   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+   Copyright (C) 1994 Free Software Foundation
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
diff --git a/libdiskfs/dir-rename.c b/libdiskfs/dir-rename.c
new file mode 100644
index 00000000..e6985e10
--- /dev/null
+++ b/libdiskfs/dir-rename.c
@@ -0,0 +1,182 @@
+/* libdiskfs implementation of fs.defs: dir_rename
+   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "priv.h"
+
+/* To avoid races in checkpath, and to prevent a directory from being
+   simultaneously renamed by two processes, we serialize all renames of
+   directores with this lock */
+static struct mutex renamedirlock = MUTEX_INITIALIZER;
+static int renamedirinit;
+
+/* Implement dir_rename as described in <hurd/fs.defs>. */
+error_t
+diskfs_S_dir_rename (struct protid *fromcred,
+		     char *fromname,
+		     struct protid *tocred,
+		     char *toname)
+{
+  struct node *fdp, *tdp, *fnp, *tnp, *tmpnp;
+  error_t err;
+  volatile int isdir;
+  struct dirstat *ds = alloca (diskfs_dirstat_size);
+  
+  if (!fromcred)
+    return EOPNOTSUPP;
+
+  /* Verify that tocred really is a port to us XXX */
+  if (!tocred)
+    return EXDEV;
+
+  if (readonly)
+    return EROFS;
+
+  fdp = fromcred->po->np;
+  tdp = tocred->po->np;
+
+ tryagain:
+  /* Acquire the source; hold a reference to it.  This 
+     will prevent anyone from deleting it before we create
+     the new link. */
+  mutex_lock (&fdp->lock);
+  err = diskfs_lookup (fdp, fromname, LOOKUP, &fnp, 0, fromcred);
+  mutex_unlock (&fdp->lock);
+  if (err)
+    return err;
+
+  if (S_ISDIR (fnp->dn_stat.st_mode))
+    {
+      mutex_unlock (&fnp->lock);
+      if (!mutex_try_lock (&renamedirlock))
+	{
+	  diskfs_nrele (fnp);
+	  mutex_lock (&renamedirlock);
+	  goto try_again;
+	}
+      err = diskfs_rename_dir (fdp, fnp, fromname, tdp, toname);
+      diskfs_nrele (fnp);
+      mutex_unlock (&renamedirlock);
+      return err;
+    }
+
+  mutex_unlock (&fnp->lock);
+
+  /* We now hold no locks */
+
+  /* Link the node into the new directory. */
+  mutex_lock (&tdp->lock);
+  
+  err = diskfs_lookup (tdp, toname, RENAME, &tnp, ds, tocred);
+  if (err && err != ENOENT)
+    {
+      diskfs_drop_dirstat (ds);
+      diskfs_nrele (fnp);
+      mutex_unlock (&tdp->lock);
+      return err;
+    }
+
+  /* rename("foo", "link-to-foo") is guaranteed to return 0 and
+     do nothing by Posix. */
+  if (tnp == fnp)
+    {
+      diskfs_drop_dirstat (ds);
+      diskfs_nrele (fnp);
+      diskfs_nput (tnp);
+      mutex_unlock (&tdp->lock);
+      return 0;
+    }
+
+  /* rename("foo", dir) should fail. */
+  if (tnp && S_ISDIR (tnp->dn_stat.st_mode))
+    {
+      diskfs_drop_dirstat (ds);
+      diskfs_nrele (fnp);
+      mutex_unlock (&tdp->lock);
+      return EISDIR;
+    }
+
+  mutex_lock (&fnp->lock);
+
+  /* Increment the link count for the upcoming link */
+  if (fnp->dn_stat.st_nlink == LINK_MAX - 1)
+    {
+      diskfs_drop_dirstat (ds);
+      diskfs_nput (fnp);
+      mutex_unlock (&tdp->lock);
+      return EMLINK;
+    }
+  fnp->dn_stat.st_nlink++;
+  fnp->dn_set_ctime = 1;
+  diskfs_node_update (fnp, 1);
+
+  if (tnp)
+    {
+      err = diskfs_dirrewrite (tdp, fnp, ds);
+      if (!err)
+	{
+	  tnp->dn_stat.st_nlink--;
+	  tnp->dn_set_ctime = 1;
+	}
+      diskfs_nput (tnp);
+    }
+  else
+    err = diskfs_direnter (tdp, toname, fnp, ds, tocred);
+
+  mutex_unlock (&tdp->lock);
+  mutex_unlock (&fnp->lock);
+  if (err)
+    {
+      diskfs_nrele (fnp);
+      return err;
+    }
+
+  /* We now hold no locks */
+
+  /* Now we remove the source.  Unfortunately, we haven't held 
+     fdp locked (nor could we), so someone else might have already
+     removed it. */
+  mutex_lock (&fdp->lock);
+  err = diskfs_lookup (fdp, fromname, REMOVE, &tmpnp, ds, fromcred);
+  if (err)
+    {
+      diskfs_drop_dirstat (ds);
+      mutex_unlock (&fdp->lock);
+      diskfs_nrele (fnp);
+      return err;
+    }
+
+  if (tmpnp != fnp)
+    {
+      /* This is no longer the node being renamed, so just return. */
+      diskfs_drop_dirstat (ds);
+      diskfs_nput (tmpnp);
+      diskfs_nrele (fnp);
+      mutex_unlock (&fdp->lock);
+      return 0;
+    }
+  
+  diskfs_nrele (tmpnp);
+
+  err = diskfs_dirremove (fdp, ds);
+
+  fnp->dn_stat.st_nlink--;
+  fnp->dn_set_ctime = 1;
+  diskfs_nput (fnp);
+  mutex_unlock (&fdp->lock);
+  return err;
+}
+#endif
diff --git a/libdiskfs/dir-rmdir.c b/libdiskfs/dir-rmdir.c
new file mode 100644
index 00000000..d34feaf4
--- /dev/null
+++ b/libdiskfs/dir-rmdir.c
@@ -0,0 +1,83 @@
+/* libdsikfs implementation of fs.defs: dir_rmdir
+   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "priv.h"
+
+/* Implement dir_rmdir as described in <hurd/fs.defs>. */
+error_t
+diskfs_S_dir_rmdir (struct protid *dircred,
+		    char *name)
+{
+  struct node *dnp;
+  struct node *np = 0;
+  struct dirstat *ds = alloca (diskfs_dirstat_size);
+  error_t error;
+
+  if (!dircred)
+    return EOPNOTSUPP;
+  
+  dnp = dircred->po->np;
+  if (readonly)
+    return EROFS;
+
+  mutex_lock (&dnp->lock);
+
+  error = diskfs_lookup (dnp, name, REMOVE, &np, ds, dircred);
+  if (error == EAGAIN)
+    error = ENOTEMPTY;
+  if (error)
+    {
+      mutex_unlock (&dnp->lock);
+      diskfs_drop_dirstat (ds);
+      return error;
+    }
+
+  /* Attempt to rmdir(".") */
+  if (dnp == np)
+    {
+      diskfs_nrele (np);
+      diskfs_drop_dirstat (ds);
+      mutex_unlock (&dnp->lock);
+      return EINVAL;
+    }
+
+  /* Verify the directory is empty (and valid).  (Rmdir ".." won't be
+     valid since ".." will contain a reference to the current directory and
+     thus be non-empty). */
+  if (!diskfs_dirempty (np, dircred))
+    {
+      diskfs_nput (np);
+      diskfs_drop_dirstat (ds);
+      mutex_unlock (&dnp->lock);
+      return ENOTEMPTY;
+    }
+
+  error = diskfs_dirremove (dnp, ds);
+
+  if (!error)
+    {
+      np->dn_stat.st_nlink--;
+      np->dn_set_ctime = 1;
+    }
+  
+  if (!error)
+    diskfs_clear_directory (np, dnp, dircred);
+
+  diskfs_nput (np);
+  mutex_unlock (&dnp->lock);
+  return 0;
+}
diff --git a/libdiskfs/dir-unlink.c b/libdiskfs/dir-unlink.c
index 76526832..f1a2f604 100644
--- a/libdiskfs/dir-unlink.c
+++ b/libdiskfs/dir-unlink.c
@@ -1,5 +1,5 @@
 /* libdiskfs implementation of fs.defs: dir_unlink
-   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+   Copyright (C) 1993, 1994 Free Software Foundation
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
diff --git a/libdiskfs/file-chauthor.c b/libdiskfs/file-chauthor.c
index bbcb05f5..dfd5850e 100644
--- a/libdiskfs/file-chauthor.c
+++ b/libdiskfs/file-chauthor.c
@@ -1,5 +1,5 @@
 /* libdiskfs implementation of fs.defs: file_chauthor
-   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+   Copyright (C) 1994 Free Software Foundation
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
@@ -19,7 +19,7 @@
 
 /* Implement file_chauthor as described in <hurd/fs.defs>. */
 error_t
-diskfs_S_file_chauthor (struct protid *cred,
+S_file_chauthor (struct protid *cred,
 		 uid_t author)
 {
   CHANGE_NODE_FIELD (cred,
diff --git a/libdiskfs/file-chflags.c b/libdiskfs/file-chflags.c
new file mode 100644
index 00000000..6fbef450
--- /dev/null
+++ b/libdiskfs/file-chflags.c
@@ -0,0 +1,30 @@
+/* libdiskfs implementation of fs.defs:file_chflags
+   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "priv.h"
+
+/* Implement file_chflags as described in <hurd/fs.defs>. */
+error_t
+dikfs_S_file_chflags (struct protid *cred,
+		      int flags)
+{
+  CHANGE_NODE_FIELD (cred,
+		   ({
+		     if (!(err = isowner (np, cred)))
+			 np->dn_stat.st_flags = flags;
+		   }));
+}
diff --git a/libdiskfs/file-chmod.c b/libdiskfs/file-chmod.c
index cdb6b1c7..ee91189f 100644
--- a/libdiskfs/file-chmod.c
+++ b/libdiskfs/file-chmod.c
@@ -1,5 +1,5 @@
 /* libdiskfs implementation of fs.defs: file_chmod
-   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+   Copyright (C) 1994 Free Software Foundation
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
@@ -19,7 +19,7 @@
 
 /* Implement file_chmod as described in <hurd/fs.defs>. */
 error_t
-diskfs_S_file_chmod (struct protid *cred,
+S_file_chmod (struct protid *cred,
 	      mode_t mode)
 {
   mode &= ~(S_IFMT | S_ISPARE);
diff --git a/libdiskfs/file-chown.c b/libdiskfs/file-chown.c
index 985b84ca..35893622 100644
--- a/libdiskfs/file-chown.c
+++ b/libdiskfs/file-chown.c
@@ -1,5 +1,5 @@
 /* libdiskfs implementetation of fs.defs: file_chown
-   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+   Copyright (C) 1994 Free Software Foundation
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
@@ -19,9 +19,9 @@
 
 /* Implement file_chown as described in <hurd/fs.defs>. */
 error_t
-diskfs_S_file_chown (struct protid *cred,
-		     uid_t uid,
-		     gid_t gid)
+S_file_chown (struct protid *cred,
+	      uid_t uid,
+	      gid_t gid)
 {
   CHANGE_NODE_FIELD (cred,
 		   ({
diff --git a/libdiskfs/file-get-trans.c b/libdiskfs/file-get-trans.c
new file mode 100644
index 00000000..2ff7fd33
--- /dev/null
+++ b/libdiskfs/file-get-trans.c
@@ -0,0 +1,41 @@
+/* libdiskfs implementation of fs.defs: file_get_translator
+   Copyright (C) 1993, 1994 Free Software Foundation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "priv.h"
+
+/* Implement file_get_translator as described in <hurd/fs.defs>. */
+error_t
+diskfs_S_file_get_translator (struct protid *cred,
+			      vm_address_t *trans)
+{
+  struct node *np;
+  error_t error;
+  
+  if (!cred)
+    return EOPNOTSUPP;
+  
+  np = cred->po->np;
+
+  mutex_lock (&np->lock);
+  if (!diskfs_node_translated (np))
+    error = EINVAL;
+  else
+    error = diskfs_get_translator (np, trans);
+  mutex_unlock (&np->lock);
+
+  return error;
+}
diff --git a/libdiskfs/file-get-transcntl.c b/libdiskfs/file-get-transcntl.c
index 539e3843..296bb046 100644
--- a/libdiskfs/file-get-transcntl.c
+++ b/libdiskfs/file-get-transcntl.c
@@ -1,5 +1,5 @@
 /* libkdiskfs implementation of fs.defs: file_get_translator_cntl
-   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+   Copyright (C) 1993, 1994 Free Software Foundation
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
diff --git a/libdiskfs/file-getcontrol.c b/libdiskfs/file-getcontrol.c
new file mode 100644
index 00000000..ef6d3b4e
--- /dev/null
+++ b/libdiskfs/file-getcontrol.c
@@ -0,0 +1,41 @@
+/* libdiskfs implementation of fs.defs:file_getcontrol.c
+   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "priv.h"
+
+/* Implement file_getcontrol as described in <hurd/fs.defs>. */
+error_t
+diskfs_S_file_getcontrol (struct protid *cred,
+			  mach_port_t *control,
+			  mach_msg_type_name_t *controltype)
+{
+  int error = 0;;
+
+  if (!cred)
+    return EOPNOTSUPP;
+  
+  if (!isuid (0, cred))
+    error = EPERM;
+  else
+    {
+      /* XXX nosenders race */
+      *control = fs_control_port;
+      *controltype = MACH_MSG_TYPE_MAKE_SEND;
+    }
+
+  return error;
+}
diff --git a/libdiskfs/file-getfh.c b/libdiskfs/file-getfh.c
index 637bfcde..899bc66b 100644
--- a/libdiskfs/file-getfh.c
+++ b/libdiskfs/file-getfh.c
@@ -1,5 +1,5 @@
 /* libdiskfs implementation of fs.defs: file_getfh
-   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+   Copyright (C) 1993, 1994 Free Software Foundation
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
diff --git a/libdiskfs/file-getlinknode.c b/libdiskfs/file-getlinknode.c
new file mode 100644
index 00000000..2e284d43
--- /dev/null
+++ b/libdiskfs/file-getlinknode.c
@@ -0,0 +1,41 @@
+/* libdiskfs implementation of fs.defs: file_getlinknode
+   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "priv.h"
+
+/* Implement file_getlinknode as described in <hurd/fs.defs>. */
+error_t
+diskfs_S_file_getlinknode (struct protid *cred,
+			   file_t *port,
+			   mach_msg_type_name_t *portpoly)
+{
+  struct inode *np;
+
+  if (!cred)
+    return EOPNOTSUPP;
+  
+  np = cred->po->np;
+  if (np->i_number == diskfs_root_node_number)
+    return EBUSY;
+  
+  /* XXX -- this is wrong; port management code for protids
+     only allows a port to be given out once; we need to
+     send a new protid unfortunately. */
+  *port = cred->fspt.pi.port;
+  *portpoly = MACH_MSG_TYPE_MAKE_SEND;
+  return 0;
+}
diff --git a/libdiskfs/file-set-size.c b/libdiskfs/file-set-size.c
index be6c520f..2364a46c 100644
--- a/libdiskfs/file-set-size.c
+++ b/libdiskfs/file-set-size.c
@@ -1,5 +1,5 @@
 /* libdiskfs implementation of fs.defs: file_truncate
-   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+   Copyright (C) 1993, 1994 Free Software Foundation
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
diff --git a/libdiskfs/file-set-trans.c b/libdiskfs/file-set-trans.c
index f63b9583..8cb790b0 100644
--- a/libdiskfs/file-set-trans.c
+++ b/libdiskfs/file-set-trans.c
@@ -1,5 +1,5 @@
 /* libdiskfs implementation of fs.defs: file_set_translator
-   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+   Copyright (C) 1993, 1994 Free Software Foundation
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
diff --git a/libdiskfs/file-statfs.c b/libdiskfs/file-statfs.c
new file mode 100644
index 00000000..65931c1d
--- /dev/null
+++ b/libdiskfs/file-statfs.c
@@ -0,0 +1,30 @@
+/* libdiskfs implementation of fs.defs: file_statfs
+   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "priv.h"
+
+/* Implement file_getcontrol as described in <hurd/fs.defs>. */
+diskfs_S_file_statfs (struct protid *file,
+		      fsys_statfsbuf_t *statbuf)
+{
+  if (!file)
+    return EOPNOTSUPP;
+  
+  diskfs_set_statfs (statbuf);
+
+  return 0;
+}
diff --git a/libdiskfs/file-sync.c b/libdiskfs/file-sync.c
index 9c5a90d8..2e17bbd5 100644
--- a/libdiskfs/file-sync.c
+++ b/libdiskfs/file-sync.c
@@ -1,5 +1,5 @@
 /* libdiskfs implementation of fs.defs: file_seek
-   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+   Copyright (C) 1993, 1994 Free Software Foundation
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
diff --git a/libdiskfs/file-syncfs.c b/libdiskfs/file-syncfs.c
index 8a63e218..45720f10 100644
--- a/libdiskfs/file-syncfs.c
+++ b/libdiskfs/file-syncfs.c
@@ -1,5 +1,5 @@
 /* libdiskfs implementation of fs.defs: file_syncfs
-   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+   Copyright (C) 1993, 1994 Free Software Foundation
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
diff --git a/libdiskfs/file-utimes.c b/libdiskfs/file-utimes.c
index 3952a266..7798d641 100644
--- a/libdiskfs/file-utimes.c
+++ b/libdiskfs/file-utimes.c
@@ -1,5 +1,5 @@
 /* libdiskfs implementation of fs.defs: file_utimes
-   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+   Copyright (C) 19921994 Free Software Foundation
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
diff --git a/libdiskfs/io-pathconf.c b/libdiskfs/io-pathconf.c
new file mode 100644
index 00000000..8c09c55b
--- /dev/null
+++ b/libdiskfs/io-pathconf.c
@@ -0,0 +1,31 @@
+/* libdiskfs implementation of fs.defs: file_pathconf
+   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "priv.h"
+
+/* Implement file_pathconf as described in <hurd/fs.defs>. */
+error_t
+diskfs_S_file_pathconf (struct protid *cred,
+			int name,
+			int *value)
+ {
+  if (!cred)
+    return EOPNOTSUPP;
+  
+  *value = 0; /* XXX */
+  return 0;
+}
diff --git a/libdiskfs/node-create.c b/libdiskfs/node-create.c
new file mode 100644
index 00000000..8a76e3d8
--- /dev/null
+++ b/libdiskfs/node-create.c
@@ -0,0 +1,98 @@
+/* Making new files
+   Copyright (C) 1992, 1993, 1994 Free Software Foundation
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "priv.h"
+
+/* Create a new node and link it into DIR with as NAME.  Give it MODE;
+   if that includes IFDIR, also initialize `.' and `..' in the new
+   directory.  Return the node in NPP.  CRED identifies the user responsible
+   for the call, and DS is the result of a prior diskfs_lookup for creation. */
+error_t
+diskfs_create_and_link (struct node *dir,
+			char *name,
+			mode_t mode,
+			struct node **newnode,
+			struct protid *cred,
+			struct dirstat *ds)
+{
+  struct node *np;
+  error_t err;
+  int dirinc = 0;
+  int number;
+  
+  /* Make the node */
+  err = diskfs_alloc_node (dir, mode, &number);
+  if (err)
+    {
+      diskfs_drop_dirstat (ds);
+      return err;
+    }
+  *newnode = np = diskfs_nget (newnode);
+  
+  /* Initialize the on-disk fields. */
+  
+  if (cred->nuids)
+    np->dn_stat.st_uid = cred->uids[0];
+  else
+    {
+      np->dn_stat.st_uid = dir->dn_stat.st_uid;
+      mode &= ~S_ISUID;
+    }
+
+  if (groupmember (dir->dn_stat.st_gid, cred))
+    np->dn_stat.st_gid = dir->dn_stat.st_gid;
+  else if (cred->ngids)
+    np->dn_stat.st_gid = cred->gids[0];
+  else
+    {
+      np->dn_stat.st_gid = dir->dn_stat.st_gid;
+      mode &= ~S_ISGID;
+    }
+  
+  np->dn_stat.st_rdev = 0;
+  np->dn_stat.st_nlink = 1;
+  np->dn_stat.st_mode = mode;
+
+  np->dn_stat.st_blocks = 0;
+  np->dn_stat.st_size = 0;
+  np->dn_stat.st_flags = 0;
+  np->dn_set_atime = 1;
+  np->dn_set_mtime = 1;
+  np->dn_set_ctime = 1;
+
+  if (S_ISDIR (mode))
+    err = diskfs_init_dir (np, dir);
+  
+  diskfs_node_update (np, 1);
+
+  if (err)
+    {
+      diskfs_drop_dirstat (ds);
+      return err;
+    }
+  
+  err = diskfs_direnter (dir, name, np, ds, cred);
+  if (err)
+    {
+      if (S_ISDIR (mode))
+	diskfs_clear_directory (np);
+      np->dn_stat.st_nlink = 0;
+      np->dn_set_ctime = 1;
+      diskfs_nput (np);
+    }
+  return err;
+}