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sigblock(2)
NAME
  sigblock - Provide a compatibility interface to the sigprocmask function

SYNOPSIS
  int sigblock(
	  int mask );

PARAMETERS
  mask	  Specifies the signals to be added to the set of signals currently
	  being blocked from delivery.

DESCRIPTION
  The sigblock() function causes the signals specified by the mask parameter
  to be added to the set of signals currently being blocked from delivery.
  The signals are blocked from delivery by logically ORing the mask value
  into the signal mask of the process. Signal i is blocked if the i-th bit in
  the mask parameter is a value of 1. Only signals with values 1-31 can be
  masked with the sigblock() function.

NOTES
  It is not possible to block SIGKILL. The system provides no indication of
  this restriction.

  The sigblock() function is provided for compatibility with other UNIX
  systems. It provides a subset of the operations provided by the
  sigprocmask() function.

RETURN VALUES
  On completion, the previous set of masked signals is returned.

SEE ALSO
  Functions: kill(2), sigaction(2), sigprocmask(2), sigsuspend(2), sigvec(2),
  sigpause(3)

Index for Section 2

Alphabetical listing for S

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