Originální popis anglicky:
sigblock, siggetmask, sigsetmask, sigmask - manipulate the signal mask
Návod, kniha: Linux Programmer's Manual
#include <signal.h>
int sigblock(int mask);
int siggetmask(void);
int sigsetmask(int mask);
int sigmask(int signum);
This interface is made obsolete by
sigprocmask(2).
The
sigblock system call adds the signals specified in
mask to the
set of signals currently being blocked from delivery.
The
sigsetmask system call replaces the set of blocked signals totally
with a new set specified in
mask. Signals are blocked if the
corresponding bit in
mask is a 1.
The current set of blocked signals can be obtained using
siggetmask.
The
sigmask macro is provided to construct the mask for a given
signum.
siggetmask returns the current set of masked signals.
sigsetmask and
sigblock return the previous set of masked signals.
Prototypes for these functions are only available if
_BSD_SOURCE is
defined before the inclusion of any system header file.
It is not possible to block
SIGKILL or
SIGSTOP - this restriction
is silently imposed by the system.
4.4BSD. These function calls appeared in BSD 4.3 and are deprecated. Use the
POSIX signal facilities for new programs.
kill(2),
sigprocmask(2),
signal(7)
