From cc74690c29b2c9bff48bd9ae68c76a72312c6825 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sun, 1 Apr 2001 04:56:03 +0000 Subject: 2001-03-31 Neal H Walfield * fsys-goaway.c (netfs_S_fsys_goaway): Actually implement it. * shutdown.c (netfs_attempt_shutdown): Likewise. --- libnetfs/fsys-goaway.c | 53 +++++++++++++++++++++++ libnetfs/shutdown.c | 114 +++++++++++++++++++++++++++++++++++++++++-------- 2 files changed, 149 insertions(+), 18 deletions(-) create mode 100644 libnetfs/fsys-goaway.c (limited to 'libnetfs') 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 +#include +#include + +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 +#include +#include +#include +#include + +/* 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; +} -- cgit v1.2.3