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/* Store creation
Copyright (C) 1995,96,97,2001 Free Software Foundation, Inc.
Written by Miles Bader <miles@gnu.org>
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 <hurd/fs.h>
#include "store.h"
/* Return a new store in STORE, which refers to the storage underlying SOURCE.
CLASSES is used to select classes specified by the provider; if it is 0,
STORE_STD_CLASSES is used. FLAGS is set with store_set_flags, with the
exception of STORE_INACTIVE, which merely indicates that no attempt should
be made to activate an inactive store; if STORE_INACTIVE is not specified,
and the store returned for SOURCE is inactive, an attempt is made to
activate it (failure of which causes an error to be returned). A reference
to SOURCE is created (but may be destroyed with store_close_source). */
error_t
store_create (file_t source, int flags,
const struct store_class *const *classes,
struct store **store)
{
error_t err;
struct store_enc enc;
mach_port_t inline_ports[10];
int inline_ints[60];
off_t inline_offsets[60];
char inline_data[100];
store_enc_init (&enc, inline_ports, 10, inline_ints, 60,
inline_offsets, 60, inline_data, 100);
err = file_get_storage_info (source,
&enc.ports, &enc.num_ports,
&enc.ints, &enc.num_ints,
&enc.offsets, &enc.num_offsets,
&enc.data, &enc.data_len);
if (err)
return err;
err = store_decode (&enc, classes, store);
if (! err)
{
if (flags & STORE_INACTIVE)
flags &= ~STORE_INACTIVE; /* Don't actually make store inactive. */
else if ((*store)->flags & STORE_INACTIVE)
err = store_clear_flags (*store, STORE_INACTIVE);
if (!err && flags)
err = store_set_flags (*store, flags);
if (err)
store_free (*store);
}
else if (err == EINVAL && (flags &~ STORE_INACTIVE) == STORE_NO_FILEIO)
/* Open a generic "unknown" store that can regurgitate this encoding. */
err = store_unknown_decode (&enc, classes, store);
store_enc_dealloc (&enc);
if (! err)
/* Keep a reference to SOURCE around. */
(*store)->source = source;
return err;
}
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