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/*
Copyright (C) 1994 Free Software Foundation
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 "priv.h"
static struct mutex lock = MUTEX_INITIALIZER;
static struct lock_box lockbox;
static int inited = 0;
error_t
trivfs_S_file_lock (struct protid *cred, int flags)
{
error_t err;
if (!cred)
return EOPNOTSUPP;
mutex_lock (&lock);
if (!inited)
{
fshelp_lock_init (&lockbox);
inited = 1;
}
err = fshelp_acquire_lock (&lockbox, &cred->po->lock_status, &lock, flags);
mutex_unlock (&lock);
return err;
}
error_t
trivfs_S_file_lock_stat (struct protid *cred, int *mystatus, int *otherstat)
{
if (!cred)
return EOPNOTSUPP;
mutex_lock (&lock);
*mystatus = cred->po->lock_status;
*otherstat = lockbox.type;
mutex_unlock (&lock);
return 0;
}
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