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/*
Copyright (C) 1995, 1996, 2000 Free Software Foundation, Inc.
Written by Michael I. Bushnell, p/BSG.
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 "netfs.h"
#include "io_S.h"
#include <fcntl.h>
error_t
netfs_S_io_write (struct protid *user,
data_t data,
mach_msg_type_number_t datalen,
off_t offset,
mach_msg_type_number_t *amount)
{
error_t err;
off_t off = offset;
struct node *np;
if (!user)
return EOPNOTSUPP;
if ((user->po->openstat & O_WRITE) == 0)
return EBADF;
*amount = datalen;
np = user->po->np;
pthread_mutex_lock (&np->lock);
if (off == -1)
{
if (user->po->openstat & O_APPEND)
{
err = netfs_validate_stat (np, user->user);
if (err)
{
pthread_mutex_unlock (&np->lock);
return err;
}
user->po->filepointer = np->nn_stat.st_size;
}
off = user->po->filepointer;
}
err = netfs_attempt_write (user->user, np, off, amount, data);
if (offset == -1 && !err)
user->po->filepointer += *amount;
pthread_mutex_unlock (&np->lock);
return err;
}
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