NAME
sigpending - get pending signals
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <signal.h>
int
sigpending(sigset_t *set);
DESCRIPTION
The sigpending() system call returns a mask of the signals pending for
delivery to the calling process in the location indicated by set.
Signals may be pending because they are currently masked, or transiently
before delivery (although the latter case is not normally detectable).
RETURN VALUES
The sigpending() function returns the value 0 if successful; otherwise
the value -1 is returned and the global variable errno is set to indicate
the error.
ERRORS
The sigpending() system call will fail if:
[EFAULT] The set argument specified an invalid address.
SEE ALSO
sigaction(2), sigprocmask(2), sigsuspend(2), sigsetops(3)
STANDARDS
The sigpending() system call is expected to conform to ISO/IEC
9945-1:1990 (“POSIX.1”).