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bsd_signal(2)
NAME
  bsd_signal - Interface to simplified signal facilities

SYNOPSIS
  #include <signal.h>

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

LIBRARY
  Standard C Library (libc)

STANDARDS
  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
  sig Defines the signal.

  function
      Specifies the address of a signal handler.

DESCRIPTION
  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
  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
  Refer to sigaction(2).

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

  Standards: standards(5)

Index for Section 2

Alphabetical listing for B

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