January 16, 2003 SIGIGNORE 3

### NAME

sigignore - manipulate signal dispositions

### LIBRARY

Standard C Library (libc, -lc)

### SYNOPSIS

```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.

[```EINVAL`]
  An attempt is made to ignore a signal that cannot be ignored, such as ```SIGKILL` or ```SIGSTOP`.

### SEE ALSO

sigaction(2)

### STANDARDS

The sigignore(``) function conforms to IEEE Std 1003.1-2001 (``POSIX.1'') .