rom/exec/adddevice.c

   1 /*
   2     Copyright © 1995-2017, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Add a device to the public list of devices.
   6     Lang: english
   7 */
   8 #include <aros/debug.h>
   9 #include <exec/execbase.h>
  10 #include <exec/devices.h>
  11 #include <aros/libcall.h>
  12 #include <proto/exec.h>
  13
  14 #include "exec_intern.h"
  15 #include "exec_debug.h"
  16 #include "exec_locks.h"
  17
  18 /*****************************************************************************
  19
  20     NAME */
  21
  22         AROS_LH1(void, AddDevice,
  23
  24 /*  SYNOPSIS */
  25         AROS_LHA(struct Device *, device,A1),
  26
  27 /*  LOCATION */
  28         struct ExecBase *, SysBase, 72, Exec)
  29
  30 /*  FUNCTION
  31         Adds a given device to the system's device list after checksumming
  32         the device vectors. This function is not for general use but
  33         (of course) for building devices that don't use exec's MakeLibrary()
  34         mechanism.
  35
  36     INPUTS
  37         device - Pointer to a ready for use device structure.
  38
  39     RESULT
  40
  41     NOTES
  42
  43     EXAMPLE
  44
  45     BUGS
  46
  47     SEE ALSO
  48         RemDevice(), OpenDevice(), CloseDevice()
  49
  50     INTERNALS
  51
  52 ******************************************************************************/
  53 {
  54     AROS_LIBFUNC_INIT
  55     ASSERT_VALID_PTR(device);
  56
  57     /* Just in case the user forgot them */
  58     device->dd_Library.lib_Node.ln_Type=NT_DEVICE;
  59     device->dd_Library.lib_Flags|=LIBF_CHANGED;
  60
  61     /* Build checksum for device vectors */
  62     SumLibrary(&device->dd_Library);
  63
  64     /* Arbitrate for the device list */
  65     EXEC_LOCK_LIST_WRITE_AND_FORBID(&SysBase->DeviceList);
  66
  67     /* And add the device */
  68     Enqueue(&SysBase->DeviceList,&device->dd_Library.lib_Node);
  69
  70     /* All done. */
  71     EXEC_UNLOCK_LIST_AND_PERMIT(&SysBase->DeviceList);
  72
  73     AROS_LIBFUNC_EXIT
  74 } /* AddDevice */
  75