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/* Store creation from a file name
Copyright (C) 1996, 97, 98 Free Software Foundation, Inc.
Written by Miles Bader <miles@gnu.ai.mit.edu>
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 <fcntl.h>
#include <hurd.h>
#include "store.h"
/* Open the file NAME, and return a new store in STORE, which refers to the
storage underlying it. 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. A reference to the open file is created (but may be
destroyed with store_close_source). */
error_t
store_open (const char *name, int flags,
const struct store_class *const *classes,
struct store **store)
{
error_t err;
int open_flags = (flags & STORE_HARD_READONLY) ? O_RDONLY : O_RDWR;
file_t node = file_name_lookup (name, open_flags, 0);
if (node == MACH_PORT_NULL && !(flags & STORE_HARD_READONLY)
&& (errno == EACCES || errno == EROFS))
{
flags |= STORE_HARD_READONLY;
node = file_name_lookup (name, O_RDONLY, 0);
}
if (node == MACH_PORT_NULL)
return errno;
err = store_create (node, flags, classes, store);
if (err)
{
if (! (flags & STORE_NO_FILEIO))
/* Try making a store that does file io to NODE. */
err = store_file_create (node, flags, store);
if (err)
mach_port_deallocate (mach_task_self (), node);
}
return err;
}
struct store_class
store_query_class = { -1, "query", open: store_open };
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