bsd_signal(2)bsd_signal(2)NAMEbsd_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 stan‐
dards 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
Defines the signal. 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)bsd_signal(2)
