minix/kernel/system/do_statectl.c

   1 /* The kernel call implemented in this file:
   2  *   m_type:    SYS_STATECTL
   3  *
   4  * The parameters for this kernel call are:
   5  *   m_lsys_krn_sys_statectl.request    (state control request)
   6  */
   7
   8 #include "kernel/system.h"
   9
  10 #if USE_STATECTL
  11
  12 /*===========================================================================*
  13  *                                do_statectl                                *
  14  *===========================================================================*/
  15 int do_statectl(struct proc * caller, message * m_ptr)
  16 {
  17 /* Handle sys_statectl(). A process has issued a state control request. */
  18
  19   switch(m_ptr->m_lsys_krn_sys_statectl.request)
  20   {
  21   case SYS_STATE_CLEAR_IPC_REFS:
  22         /* Clear IPC references for all the processes communicating
  23          * with the caller.
  24          */
  25         clear_ipc_refs(caller, EDEADSRCDST);
  26         return(OK);
  27   default:
  28         printf("do_statectl: bad request %d\n",
  29                 m_ptr->m_lsys_krn_sys_statectl.request);
  30         return EINVAL;
  31   }
  32 }
  33
  34 #endif /* USE_STATECTL */