sigpending man page on FreeBSD

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SIGPENDING(2)		    BSD System Calls Manual		 SIGPENDING(2)

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.	Sig‐
     nals 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”).

BSD			       January 12, 1994				   BSD
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