StdLib/Include/sys/signal.h

   1 /**
   2 Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
   3 This program and the accompanying materials are licensed and made available under
   4 the terms and conditions of the BSD License that accompanies this distribution.
   5 The full text of the license may be found at
   6 http://opensource.org/licenses/bsd-license.php.
   7
   8 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
   9 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  10
  11 **/
  12 #ifndef _SYS_SIGNAL_H
  13 #define _SYS_SIGNAL_H
  14 #include  <sys/EfiCdefs.h>
  15 #include  <machine/signal.h>
  16
  17 /** The type of a signal handler function. **/
  18 typedef void __sighandler_t(int);
  19
  20 /** The signal function associates a "signal handler" with a signal number.
  21
  22     For historical reasons; programs expect signal to be declared
  23     in <sys/signal.h>.
  24
  25     @param[in]  sig       Signal number that function is to be associated with.
  26     @param[in]  function  The "handler" function to be associated with signal sig.
  27
  28     @return     If the request can be honored, the signal function returns the
  29                 value of func for the most recent successful call to signal for
  30                 the specified signal sig. Otherwise, a value of SIG_ERR is
  31                 returned and a positive value is stored in errno.
  32  */
  33 __BEGIN_DECLS
  34 __sighandler_t  *signal(int sig, __sighandler_t *func);
  35 __END_DECLS
  36
  37 #endif    /* _SYS_SIGNAL_H */