SIGIGNORE(3) Library Functions Manual SIGIGNORE(3)
NAME
sigignoremanipulate signal dispositions
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <signal.h>
int
sigignore(int sig);
DESCRIPTION
This interface is made obsolete by sigaction(2).
 
The sigignore() function sets the disposition of the signal sig to SIG_IGN.
RETURN VALUES
If successful, the sigignore() function returns 0. Otherwise -1 is returned and errno is set to indicate the error.
ERRORS
The sigignore() function will fail if:
[EINVAL]
The argument sig is not a valid signal number; or an attempt is made to ignore a signal that cannot be ignored, such as SIGKILL or SIGSTOP.
SEE ALSO
STANDARDS
The sigignore() function conforms to IEEE Std 1003.1-2001 (“POSIX.1”). It was however marked as obsolete in the IEEE Std 1003.1-2008 (“POSIX.1”) revision of the standard.