bsd_signal - Simplified signal facilities
Standard C Library (libc.so, libc.a)
Interfaces documented on this reference page conform to industry standards as follows:
Refer to the standards(5) reference page for more information about industry standards and associated tags.
Defines the signal. Specifies the address of a signal handler.
The bsd_signal() function provides a partially compatible interface for programs written to historical system interfaces.
The handler function should be declared: void handler(int sig);
where sig is the signal number. The behaviour is undefined if function is a function that takes more than one argument, or an argument of a different type.
This function is a direct replacement for the BSD signal() function for simple applications that are installing a single-argument signal handler function. If a BSD signal handler function is being installed 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().
Upon successful completion, bsd_signal() returns the previous action for sig. Otherwise, SIG_ERR is returned and errno is set to indicate the error.
Refer to sigaction(2).
Functions: sigaction(2), sigaddset(3), sigemptyset(3), signal(2)
Standards: standards(5) delim off