*** empty log message ***

3 files changed, 242 insertions, 0 deletions

diff --git a/mount/mount.defs b/mount/mount.defs
new file mode 100644
index 00000000..7e97bb9b
--- /dev/null
+++ b/mount/mount.defs
@@ -0,0 +1,109 @@
+/* A server for keeping track of filesystems
+
+   Copyright (C) 1996 Free Software Foundation, Inc.
+
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+   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 <hurd/hurd_types.defs>
+
+subsystem mount 37000;
+
+import <hurd/mount_defs.h>;
+
+type mount_t = mach_port_t
+#ifdef MOUNT_INTRAN
+intran: MOUNT_INTRAN
+#endif
+#ifdef MOUNT_OUTTRAN
+outtran: MOUNT_OUTTRAN
+#endif
+#ifdef MOUNT_DESTRUCTOR
+destructor: MOUNT_DESTRUCTOR
+#endif
+;
+type mount_server_t = mach_port_t
+#ifdef MOUNT_SERVER_INTRAN
+intran: MOUNT_SERVER_INTRAN
+#endif
+#ifdef MOUNT_SERVER_OUTTRAN
+outtran: MOUNT_SERVER_OUTTRAN
+#endif
+#ifdef MOUNT_SERVER_DESTRUCTOR
+destructor: MOUNT_SERVER_DESTRUCTOR
+#endif
+;
+
+type mount_state_t = int ctype: mount_state_t;
+type mount_key_class_t = int ctype: mount_key_class_t;
+type mount_excl_t = int ctype: mount_excl_t;
+
+#ifdef MOUNT_IMPORTS
+MOUNT_IMPORTS
+#endif
+
+INTR_INTERFACE
+
+/* RPCs */
+
+/* Begin mounting the filesystem designated by KEY & KEY_CLASS; the mount is
+   initially assumed to have a mode of 0 (see mount_set_mode).  EXCL is the
+   mount exclusion mode which applies to KEY (only the first EXCL argument
+   for a particular KEY is used).  A mount reference is returned in MOUNT,
+   and the current state of that filesystem is returned in STATE (and may be
+   used to, e.g., cause the mount to be read-only if STATE is SUSPICIOUS).  */
+routine mount_begin (
+        server : mount_server_t;
+	key : string_t;
+	key_class : mount_key_class_t;
+	excl : mount_excl_t;
+	out mount : mount_t;
+	out state : mount_state_t);
+
+/* Assert that MOUNT is no longer active.  If CLEAN is true, then the state
+   of the filesystem should be changed to CLEAN; however if the state was
+   previously SUSPICIOUS, this is only done if CHECKED is true.  */
+routine mount_end (
+	mount : mount_t;
+	clean : boolean_t;
+        checked : boolean_t);
+
+/* Indicate that MOUNT is a real mount.  TRANSLATOR and MPOINT should be the
+   filesystem control port and the node which is being translated.  TIMESTAMP
+   is used to validate this mount if a reconnection to the mount server
+   becomes necessary.  */
+routine mount_set_translator (
+	mount : mount_t;
+	translator : fsys_t;
+	mpoint : file_t;
+	timestamp : time_spec_t);
+
+/* If CLEAN is true, then the state of the filesystem should be changed to
+   CLEAN; however if the state was previously SUSPICIOUS, this is only done
+   if CHECKED is true.  */
+routine mount_set_clean (
+	mount : mount_t			    
+        clean : boolean_t;
+        checked : boolean_t);
+
+/* Change the current writable state of MOUNT to MODE, which should be a
+   bitmask containg MOUNT_READ and/or MOUNT_WRITE.  If other current mounts
+   preclude this, then EBUSY is returned.  If MODE contains MOUNT_FORCE and
+   there are conflicting mounts, an attempt is made to use the --suspend
+   option on the other filesystems in order to force the issue.  */
+routine mount_set_mode (
+	mount : mount_t
+        mode : int);
diff --git a/mount/mount.h b/mount/mount.h
new file mode 100644
index 00000000..0d3eb855
--- /dev/null
+++ b/mount/mount.h
@@ -0,0 +1,72 @@
+/* Private definitions for the mount server
+
+   Copyright (C) 1996 Free Software Foundation, Inc.
+
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+   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 <hurd/ports.h>
+
+#include "mount_types.h"
+
+/* A particular mount of a filesystem.  */
+struct mount
+{
+  struct port_info pi;		/* libports header.  */
+
+  /* The filesystem this a mount of.  */
+  struct mount_fsys *fsys;
+
+  /* Modes of this mount, from the set MOUNT_READ, MOUNT_WRITE, &c.  */
+  int mode;
+
+  /* The filesystem control port for its translator.  This may
+     MACH_PORT_NULL, in which case it's not actually a filesystem (maybe it's
+     a fsck or something).  */
+  fsys_t translator;
+
+  /* A timestamp associated with TRANSLATOR, used to validate state if the
+     mount server is restarted.  */
+  struct timespec timestamp;
+
+  /* The place in the filesystem where this filesystem is mounted, using the
+     mount server's root node.  */
+  char *mount_point;
+
+  /* The next mount of this filesystem.  */
+  struct mount *next;
+};
+
+struct mount_fsys
+{
+  /* A string identifying the `backing store' associated with this
+     filesystem, who's interpretation depends on KEY_CLASS:
+       MOUNT_KEY_UNKNOWN	-- no interpretation, just a string
+       MOUNT_KEY_FILE		-- KEY is a filename
+       MOUNT_KEY_DEVICE		-- KEY is a (mach) device name
+     No two filesystems can have the same KEY and KEY_CLASS.  */
+  char *key;
+  enum mount_key_class key_class;
+
+  /* In what condition we think the filesystem is.  */
+  enum mount_state state;
+
+  /* How this file system deals with multiple mount requests.  */
+  enum mount_excl excl;
+
+  /* Active mounts of this filesystem.  */
+  struct mount *mounts;
+};
diff --git a/mount/mount_types.h b/mount/mount_types.h
new file mode 100644
index 00000000..f72d3a53
--- /dev/null
+++ b/mount/mount_types.h
@@ -0,0 +1,61 @@
+/* Exported types for the mount server
+
+   Copyright (C) 1996 Free Software Foundation, Inc.
+
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+   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. */
+
+/* Modes a particular mount may have.  */
+#define MOUNT_READ  0x1		/* We only read. */
+#define MOUNT_WRITE 0x2		/* We write too. */
+#define MOUNT_FORCE 0x4		/* Used to try forcing a writable mount. */
+
+/* The condition we think a file system is in (this refers to the permanent
+   storage from which it is backed, not an active file system).  */
+enum mount_state
+{
+  MOUNT_STATE_UNKNOWN,		/* Just so.  When this value is passed to a
+				   mount routine that takes a state argument,
+				   it usually means `keep the last known
+				   state'. */
+  MOUNT_STATE_SUSPICIOUS,	/* We think it may have been compromised. */
+  MOUNT_STATE_DIRTY,		/* May be transiently inconsistent.  This is
+				   the normal state for an active writable
+				   file system.  */
+  MOUNT_STATE_CLEAN		/* Peachy. */
+};
+typedef enum mount_state mount_state_t;	/* For mig's use. */
+
+/* How the key associated with a filesystem is interpreted.  */
+enum mount_key_class
+{
+  MOUNT_KEY_UNKNOWN,		/*  */
+  MOUNT_KEY_FILE,		/* A file (including e.g., `/dev/rsd0a').  */
+  MOUNT_KEY_DEVICE		/* A mach device name.  */
+};
+typedef enum mount_key_class mount_key_class_t;	/* For mig's use. */
+
+/* Types of multiple mounts of a single filesystem that are allowed.  */
+enum mount_excl
+{
+  MOUNT_EXCL_NONE,		/* Both multiple readers and multiple writers
+				   allowed; some external private protocol
+				   must be used to main consistency.  */
+  MOUNT_EXCL_WRITE,		/* Multiple readers allowed, but if there's a
+				   writer, it must be the only mount.  */
+  MOUNT_EXCL_RDWR		/* Only a single mount of any type allowed.  */
+};
+typedef enum mount_excl mount_excl_t; /* For mig */