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authorRoland McGrath <roland@gnu.org>2001-04-01 04:56:03 +0000
committerRoland McGrath <roland@gnu.org>2001-04-01 04:56:03 +0000
commitcc74690c29b2c9bff48bd9ae68c76a72312c6825 (patch)
treeee58bfc71cc4acb97fc5304421b5e563a78bcaf1 /libnetfs
parent910e44aa00e370c48e1a75a0d4fc57fd26089bbb (diff)
2001-03-31 Neal H Walfield <neal@cs.uml.edu>
* fsys-goaway.c (netfs_S_fsys_goaway): Actually implement it. * shutdown.c (netfs_attempt_shutdown): Likewise.
Diffstat (limited to 'libnetfs')
-rw-r--r--libnetfs/fsys-goaway.c53
-rw-r--r--libnetfs/shutdown.c114
2 files changed, 149 insertions, 18 deletions
diff --git a/libnetfs/fsys-goaway.c b/libnetfs/fsys-goaway.c
new file mode 100644
index 00000000..6ac555d5
--- /dev/null
+++ b/libnetfs/fsys-goaway.c
@@ -0,0 +1,53 @@
+/* implement the fsys_goaway RPC for libnetfs
+ Copyright (C) 2001 Free Software Foundation, Inc.
+
+ 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. */
+
+#include "priv.h"
+#include "netfs.h"
+#include "fsys_S.h"
+#include "fsys_reply_U.h"
+
+#include <stdlib.h>
+#include <errno.h>
+#include <hurd/ports.h>
+
+error_t
+netfs_S_fsys_goaway (fsys_t control,
+ mach_port_t reply,
+ mach_msg_type_name_t reply_type,
+ int flags)
+{
+ error_t err;
+ struct port_info *pt;
+
+ pt = ports_lookup_port (netfs_port_bucket, control,
+ netfs_control_class);
+ if (! pt)
+ return EOPNOTSUPP;
+
+ err = netfs_shutdown (flags);
+ if (! err)
+ {
+ fsys_goaway_reply (reply, reply_type, 0);
+ exit (0);
+ }
+
+ ports_port_deref (pt);
+
+ return err;
+}
diff --git a/libnetfs/shutdown.c b/libnetfs/shutdown.c
index 8e4c7a68..9ba137d0 100644
--- a/libnetfs/shutdown.c
+++ b/libnetfs/shutdown.c
@@ -1,28 +1,106 @@
-/*
- Copyright (C) 1996 Free Software Foundation, Inc.
- Written by Michael I. Bushnell, p/BSG.
+/*
+ Copyright (C) 1993,94,95,96,98,99,2001 Free Software Foundation, Inc.
- This file is part of the GNU Hurd.
+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 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.
+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. */
+You should have received a copy of the GNU General Public License
+along with the GNU Hurd; see the file COPYING. If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-#include "netfs.h"
+/* Written by Michael I. Bushnell. */
+#include "priv.h"
+#include <errno.h>
+#include <sys/stat.h>
+#include <hurd/fsys.h>
+#include <hurd/fshelp.h>
+#include <cthreads.h>
+
+/* Shutdown the filesystem; flags are as for fsys_goaway. */
error_t
netfs_shutdown (int flags)
{
- return EBUSY;
-}
+ error_t
+ helper (struct node *node)
+ {
+ error_t err;
+ mach_port_t control;
+
+ err = fshelp_fetch_control (&node->transbox, &control);
+ if (!err && (control != MACH_PORT_NULL))
+ {
+ mutex_unlock (&node->lock);
+ err = fsys_goaway (control, flags);
+ mach_port_deallocate (mach_task_self (), control);
+ mutex_lock (&node->lock);
+ }
+ else
+ err = 0;
+
+ if ((err == MIG_SERVER_DIED) || (err == MACH_SEND_INVALID_DEST))
+ err = 0;
+
+ return err;
+ }
+
+ int nports;
+ int err;
+
+ if ((flags & FSYS_GOAWAY_UNLINK)
+ && S_ISDIR (netfs_root_node->nn_stat.st_mode))
+ return EBUSY;
+#ifdef NOTYET
+ if (flags & FSYS_GOAWAY_RECURSE)
+ {
+ err = netfs_node_iterate (helper);
+ if (err)
+ return err;
+ }
+#endif
+
+#ifdef NOTYET
+ rwlock_writer_lock (&netfs_fsys_lock);
+#endif
+
+ /* Permit all current RPC's to finish, and then suspend any new ones. */
+ err = ports_inhibit_class_rpcs (netfs_protid_class);
+ if (err)
+ {
+#ifdef NOTYET
+ rwlock_writer_unlock (&netfs_fsys_lock);
+#endif
+ return err;
+ }
+
+ nports = ports_count_class (netfs_protid_class);
+ if (((flags & FSYS_GOAWAY_FORCE) == 0) && nports)
+ /* There are outstanding user ports; resume operations. */
+ {
+ ports_enable_class (netfs_protid_class);
+ ports_resume_class_rpcs (netfs_protid_class);
+#ifdef NOTYET
+ rwlock_writer_unlock (&netfs_fsys_lock);
+#endif
+ return EBUSY;
+ }
+
+ if (!(flags & FSYS_GOAWAY_NOSYNC))
+ {
+ err = netfs_attempt_syncfs (0, flags);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}