2.9BSD - /usr/src/ucb/Mail/sigretro.h

   1: #
   2: 
   3: /*
   4:  * Define extra stuff not found in signal.h
   5:  * Sccs id @(#)sigretro.h	1.2	3/22/82
   6:  */
   7: 
   8: #ifndef SIGRETRO
   9: 
  10: #define SIGRETRO                /* Can use this for cond code */
  11: 
  12: #ifndef SIG_HOLD
  13: 
  14: #define SIG_HOLD    (int (*)()) 3       /* Phony action to hold sig */
  15: #define BADSIG      (int (*)()) -1      /* Return value on error */
  16: 
  17: #endif SIG_HOLD
  18: 
  19: #endif SIGRETRO

Defined macros

Usage of this include