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/* Parse run-time options
Copyright (C) 1995, 1996 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <errno.h>
#include <argz.h>
#include <hurd/fsys.h>
#include <string.h>
#include "priv.h"
#include "fsys_S.h"
/* Implement fsys_set_options as described in <hurd/fsys.defs>. */
kern_return_t
diskfs_S_fsys_set_options (fsys_t fsys,
mach_port_t reply,
mach_msg_type_name_t replytype,
char *data, mach_msg_type_number_t len,
int do_children)
{
error_t err = 0;
struct port_info *pt =
ports_lookup_port (diskfs_port_bucket, fsys, diskfs_control_class);
error_t
helper (struct node *np)
{
error_t error;
mach_port_t control;
error = fshelp_fetch_control (&np->transbox, &control);
mutex_unlock (&np->lock);
if (!error && (control != MACH_PORT_NULL))
{
error = fsys_set_options (control, data, len, do_children);
mach_port_deallocate (mach_task_self (), control);
}
else
error = 0;
mutex_lock (&np->lock);
if ((error == MIG_SERVER_DIED) || (error == MACH_SEND_INVALID_DEST))
error = 0;
return error;
}
if (!pt)
return EOPNOTSUPP;
if (do_children)
{
rwlock_writer_lock (&diskfs_fsys_lock);
err = diskfs_node_iterate (helper);
rwlock_writer_unlock (&diskfs_fsys_lock);
}
if (!err)
{
int argc = argz_count (data, len);
char **argv = alloca (sizeof (char *) * (argc + 1));
argz_extract (data, len, argv);
argv[argc] = 0; /* Terminate ARGV. */
rwlock_writer_lock (&diskfs_fsys_lock);
err = diskfs_set_options (argc, argv);
rwlock_writer_unlock (&diskfs_fsys_lock);
}
ports_port_deref (pt);
return err;
}
/* Implement fsys_get_options as described in <hurd/fsys.defs>. */
error_t
diskfs_S_fsys_get_options (fsys_t fsys,
mach_port_t reply,
mach_msg_type_name_t replytype,
char **data, mach_msg_type_number_t *data_len)
{
char *argz;
error_t err;
struct port_info *port =
ports_lookup_port (diskfs_port_bucket, fsys, diskfs_control_class);
if (!port)
return EOPNOTSUPP;
rwlock_reader_lock (&diskfs_fsys_lock);
err = diskfs_get_options (&argz, data_len);
rwlock_reader_unlock (&diskfs_fsys_lock);
if (!err)
/* Move ARGZ from a malloced buffer into a vm_alloced one. */
{
err =
vm_allocate (mach_task_self (), (vm_address_t *)data, *data_len, 1);
if (!err)
bcopy (argz, *data, *data_len);
free (argz);
}
ports_port_deref (port);
return err;
}
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