Prex Home / Browse Source - Prex Version: 0.9.0

root/usr/lib/posix/file/__file.c

DEFINITIONS

1. __file_init
2. __file_exit
3. fslib_init
4. fslib_exit

   1 /*
   2  * Copyright (c) 2007, Kohsuke Ohtani
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. Neither the name of the author nor the names of any co-contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  30 #include <sys/prex.h>
  31 #include <sys/posix.h>
  32 #include <ipc/ipc.h>
  33 #include <ipc/fs.h>
  35 #include <stddef.h>
object_t __fs_obj;
  39 /*
  40  * This is called first when task is started
  41  */
  42 void
__file_init(void)
  44 {
  45         int error;
  47         /*
  48          * Look up file system server
  49          */
error = object_lookup("!fs", &__fs_obj);
  51         if (error)
__fs_obj = 0;
  53 }
  55 /*
  56  * Clean up
  57  */
  58 void
__file_exit(void)
  60 {
  61         struct msg m;
  63         /* Notify to file system server */
  64         if (__fs_obj != 0) {
m.hdr.code = FS_EXIT;
msg_send(__fs_obj, &m, sizeof(m));
  67         }
  68 }
  70 /*
  71  * Notify to file system server.
  72  * This routine is used by native task which uses file system.
  73  */
  74 void
fslib_init(void)
  76 {
  77         struct msg m;
  79         if (__fs_obj == 0)
__file_init();
m.hdr.code = FS_REGISTER;
msg_send(__fs_obj, &m, sizeof(m));
  84 }
  87 /*
  88  * Clean up (native task)
  89  */
  90 void
fslib_exit(void)
  92 {
__file_exit();
  95 }