apps/include/signal.h

   1 /*
   2     meinOS - A unix-like x86 microkernel operating system
   3     Copyright (C) 2008  Janosch Gräf <janosch.graef@gmx.net>
   4
   5     This program is free software: you can redistribute it and/or modify
   6     it under the terms of the GNU Lesser General Public License as published by
   7     the Free Software Foundation, either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU Lesser General Public License for more details.
  14
  15     You should have received a copy of the GNU Lesser General Public License
  16     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #ifndef _SIGNAL_H_
  20 #define _SIGNAL_H_
  21
  22 #include <sys/types.h>
  23 #include <syscall.h>
  24 #include <string.h>
  25
  26 #define SIG_ERR NULL
  27
  28 // Default signal handler
  29 #define SIG_IGN _signal_dfl_ignore
  30 #define SIG_DFL NULL
  31
  32 #define SIG_BLOCK   1
  33 #define SIG_UNBLOCK 2
  34 #define SIG_SETMASK 3
  35
  36 // Signals
  37 #define SIGHUP       1
  38 #define SIGINT       2
  39 #define SIGQUIT      3
  40 #define SIGILL       4
  41 #define SIGTRAP      5
  42 #define SIGABRT      6
  43 #define SIGBUS       7
  44 #define SIGFPE       8
  45 #define SIGKILL      9
  46 #define SIGUSR1     10
  47 #define SIGSEGV     11
  48 #define SIGUSR2     12
  49 #define SIGPIPE     13
  50 #define SIGALRM     14
  51 #define SIGTERM     15
  52 #define SIGSTKFLT   16
  53 #define SIGCHLD     17
  54 #define SIGCONT     18
  55 #define SIGSTOP     19
  56 #define SIGTSTP     20
  57 #define SIGTTIN     21
  58 #define SIGTTOU     22
  59 #define SIGURG      23
  60 #define SIGXCPU     24
  61 #define SIGXFSZ     25
  62 #define SIGVTALRM   26
  63 #define SIGPROF     27
  64 #define SIGWINCH    28
  65 #define SIGIO       29
  66 #define SIGPWR      30
  67 #define SIGSYS      31
  68 #define SIGRTMIN(x) (34+(x))
  69 #define SIGRTMAX(x) (64-(x))
  70 #define SIG_MAXNUM 64
  71
  72 typedef struct {
  73   int si_signo;
  74   int si_sigcode;
  75   int si_errno;
  76   pid_t si_pid;
  77   uid_t si_uid;
  78   void *si_addr;
  79   int si_status;
  80   long si_band;
  81 } siginfo_t;
  82
  83 typedef struct {
  84   char sigs[SIG_MAXNUM/sizeof(char)];
  85 } sigset_t;
  86
  87 struct sigaction {
  88   void (*sa_handler)(int sig);
  89   sigset_t sa_mask;
  90   int sa_flags;
  91   void (*sa_sigaction)(int sig,siginfo_t *siginfo,void *context);
  92 };
  93
  94 typedef int sig_atomic_t;
  95
  96 void (*signal(int sig,void (*handler)(int)))(int);
  97 void (*sysv_signal(int sig,void (*handler)(int)))(int);
  98 void _signal_dfl_ignore(int sig);
  99 void _signal_handler(int sig);
 100 int sigaddset(sigset_t *set,int sig);
 101 int sigdelset(sigset_t *set,int sig);
 102 int sigprocmask(int how,const sigset_t *set,sigset_t *oset);
 103
 104 static __inline__ int kill(pid_t pid,int sig) {
 105   return syscall_call(SYSCALL_SIG_SEND,2,pid,sig);
 106 }
 107
 108 static __inline__ int raise(int sig) {
 109   _signal_handler(sig);
 110   //kill(getpid(),sig);
 111   return 0;
 112 }
 113
 114 static __inline__ int sigemptyset(sigset_t *set) {
 115   memset(set->sigs,0,SIG_MAXNUM/sizeof(char));
 116   return 0;
 117 }
 118
 119 static __inline__ int sigfillset(sigset_t *set) {
 120   memset(set->sigs,1,SIG_MAXNUM/sizeof(char));
 121   return 0;
 122 }
 123
 124 #endif