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1 files changed, 99 insertions, 0 deletions

diff --git a/usermux/usermux.h b/usermux/usermux.h
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+/* Multiplexing filesystems by host
+
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd 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.
+
+   The GNU Hurd 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA. */
+
+#ifndef __USERMUX_H__
+#define __USERMUX_H__
+
+#include <hurd/netfs.h>
+#include <rwlock.h>
+#include <maptime.h>
+
+struct passwd;
+
+/* Filenos (aka inode numbers) for user nodes are the uid + this.  */
+#define USERMUX_FILENO_UID_OFFSET	10
+
+/* Handy source of time.  */
+volatile struct mapped_time_value *usermux_maptime;
+
+/* The state associated with a host multiplexer translator.  */
+struct usermux
+{
+  /* The user nodes in this mux.  */
+  struct usermux_name *names;
+  struct rwlock names_lock;
+
+  /* A template argz, which is used to start each user-specific translator
+     with the user name appropriately added.  */
+  char *trans_template;
+  size_t trans_template_len;
+
+  /* What string to replace in TRANS_TEMPLATE with the name of the various
+     user params; if none occur in the template, the user's home dir is
+     appended as an additional argument.  */
+  char *user_pat;		/* User name */
+  char *home_pat;		/* Home directory */
+  char *uid_pat;		/* Numeric user id */
+
+  /* Constant fields for user stat entries.  */
+  struct stat stat_template;
+
+  /* The file that this translator is sitting on top of; we inherit various
+     characteristics from it.  */
+  file_t underlying;
+};
+
+/* The name of a recently looked up user entry.  */
+struct usermux_name
+{
+  const char *name;		/* Looked up name.  */
+
+  /* A filesystem node associated with NAME.  */
+  struct node *node;
+
+  struct usermux_name *next;
+};
+
+/* The fs specific storage that libnetfs associates with each filesystem
+   node.  */
+struct netnode
+{
+  /* The mux this node belongs to (the node can either be the mux root, or
+     one of the users served by it).  */
+  struct usermux *mux;
+
+  /* For mux nodes, 0, and for leaf nodes, the name under which the node was
+     looked up. */
+  struct usermux_name *name;
+
+  /* The translator associated with node, or if its a symlink, just the link
+     target.  */
+  char *trans;
+  size_t trans_len;
+};
+
+error_t create_user_node (struct usermux *mux, struct usermux_name *name,
+			  struct passwd *pw, struct node **node);
+
+#ifndef USERMUX_EI
+# define USERMUX_EI extern inline
+#endif
+
+#endif /* __USERMUX_H__ */