/projects/cubeos/src_current/libc/kill.c Source File

00001 /*  src_experimental/libc/kill.c
00002    CubeOS Version 0.4.90 experimental
00003    Copyright (C) 1999,2000 Holger Kenn
00004 
00005    CubeOS is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Library General Public
00007    License as published by the Free Software Foundation; either
00008    version 2 of the License, or any later version.
00009 
00010    CubeOS is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Library General Public License for more details.
00014 
00015  */
00016 /* kill.c -- signal to a process.
00017 
00018  */
00019 
00024 #include <sys_var.h>
00025 #include <schedule.h>
00026 
00034 int kill (int pid, int sig)
00035 {
00036 
00037         if (pid > MAX_PROCESSNUM)
00038                 return (-1);
00039         if (pid < 0)
00040                 return (-1);
00041         if (_KERN_ptable[pid].state == STATE_EMPTY)
00042                 return (-1);
00043         if (sig < 0)
00044                 return (-1);
00045         if (sig > 31)
00046                 return (-1);
00047         _KERN_ptable[pid].signal |= (1 << sig);
00048         return 0;
00049 }