NAME    [Toc]    [Back]

       bsd_signal - Interface to simplified signal facilities

SYNOPSIS    [Toc]    [Back]

       #include <signal.h>

       void (*bsd_signal(
               int sig,
               void (*function) (int)))(int );

LIBRARY    [Toc]    [Back]

       Standard C Library (libc)

STANDARDS    [Toc]    [Back]

       Interfaces  documented  on  this reference page conform to
       industry standards as follows:

       bsd_signal():  XSH4.2, XSH5.0

       Refer to the standards(5) reference page for more information
 about industry standards and associated tags.

PARAMETERS    [Toc]    [Back]

       Defines  the  signal.   Specifies  the address of a signal
       handler.

DESCRIPTION    [Toc]    [Back]

       The bsd_signal() function provides a partially  compatible
       interface for programs written to historical system interfaces.


       The handler function should be declared as follows (sig is
       the signal number).

       void handler (int sig);

       The  behavior  of bsd_signal() is undefined if the handler
       function takes more than one argument, or an argument of a
       different type.

       The  bsd_signal() function is a direct replacement for the
       BSD signal() function  in  simple  applications  that  are
       installing a single-argument signal handler. If the application
 is installing a BSD  signal  handler  that  expects
       more than one argument, the application has to be modified
       to use sigaction(). The bsd_signal() function differs from
       signal()  in  that  the  SA_RESTART  flag  is  set and the
       SA_RESETHAND will be clear when  the  libsys5  version  of
       bsd_signal()  is  used.  The  state  of these flags is not
       specified for signal().

RETURN VALUES    [Toc]    [Back]

       Upon successful completion, bsd_signal() returns the  previous
  action  for sig. Otherwise, SIG_ERR is returned and
       errno is set to indicate the error.

ERRORS    [Toc]    [Back]

       Refer to sigaction(2).

SEE ALSO    [Toc]    [Back]

       Functions: sigaction(2), signal(2), sigaddset(3),  sigemptyset(3)

       Standards: standards(5)



                                                    bsd_signal(2)