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siginterrupt(3UCB) SunOS/BSD Compatibility Library Functionssiginterrupt(3UCB)

NAME
       siginterrupt - allow signals to interrupt functions

SYNOPSIS
       /usr/ucb/cc [ flag ... ] file ...

       int siginterrupt(sig, flag)
       int sig, flag;

DESCRIPTION
       siginterrupt()  is  used to change the function restart behavior when a
       function is interrupted by the specified signal. If the flag  is	 false
       (0),  then  functions  will be restarted if they are interrupted by the
       specified signal and no data has	 been  transferred  yet.  System  call
       restart is the default behavior when the signal(3C) routine is used.

       If  the	flag is true,	(1), then restarting of functions is disabled.
       If a function is interrupted by the specified signal and	 no  data  has
       been transferred, the function will return  −1 with errno set to EINTR.
       Interrupted functions that have started transferring data  will	return
       the amount of data actually transferred.

       Issuing	a siginterrupt() call during the execution of a signal handler
       will cause the new action to take  place	 on  the  next	signal	to  be
       caught.

RETURN VALUES
       A   0  value  indicates	that the call succeeded. A  −1 value indicates
       that the call failed and	 errno is set to indicate the error.

ERRORS
       siginterrupt() may return the following error:

       EINVAL	 sig is not a valid signal.

SEE ALSO
       cc(1B), sigblock(3UCB), sigvec(3UCB), signal(3C)

NOTES
       Use of these interfaces should be restricted to only applications writ‐
       ten  on	BSD platforms.	Use of these interfaces with any of the system
       libraries or in multi-threaded applications is unsupported.

       This library routine uses an extension  of  the	sigvec(3UCB)  function
       that  is not available in 4.2 BSD, hence it should not be used if back‐
       ward compatibility is needed.

SunOS 5.10			  30 Oct 2007		    siginterrupt(3UCB)

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