42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
/* The kernel call that is implemented in this file:
|
|
* m_type: SYS_KILL
|
|
*
|
|
* The parameters for this kernel call are:
|
|
* m2_i1: SIG_ENDPT # process to signal/ pending
|
|
* m2_i2: SIG_NUMBER # signal number to send to process
|
|
*/
|
|
|
|
#include "kernel/system.h"
|
|
#include <signal.h>
|
|
|
|
#if USE_KILL
|
|
|
|
/*===========================================================================*
|
|
* do_kill *
|
|
*===========================================================================*/
|
|
int do_kill(struct proc * caller, message * m_ptr)
|
|
{
|
|
/* Handle sys_kill(). Cause a signal to be sent to a process. Any request
|
|
* is added to the map of pending signals and the signal manager
|
|
* associated to the process is informed about the new signal. The signal
|
|
* is then delivered using POSIX signal handlers for user processes, or
|
|
* translated into an IPC message for system services.
|
|
*/
|
|
proc_nr_t proc_nr, proc_nr_e;
|
|
int sig_nr = m_ptr->SIG_NUMBER;
|
|
|
|
proc_nr_e= (proc_nr_t) m_ptr->SIG_ENDPT;
|
|
|
|
if (!isokendpt(proc_nr_e, &proc_nr)) return(EINVAL);
|
|
if (sig_nr >= _NSIG) return(EINVAL);
|
|
if (iskerneln(proc_nr)) return(EPERM);
|
|
|
|
/* Set pending signal to be processed by the signal manager. */
|
|
cause_sig(proc_nr, sig_nr);
|
|
|
|
return(OK);
|
|
}
|
|
|
|
#endif /* USE_KILL */
|
|
|