allow signals to interrupt system calls
int siginterrupt(int sig, int flag);
The siginterrupt function is used to change the restart
behaviour when a function is interrupted by the specified signal.
If the flag is true (1), then system calls will be restarted if
they are interrupted by the specified signal
and no data has been transferred yet.
If the flag is false (0), then restarting of system calls is disabled.
If a system call is interrupted by the specified signal
and no data has been transferred, the system call will return -1 with
errno set to EINTR.
Interrupted system calls 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.
A 0 value indicates that the call succeeded.
A -1 value indicates that an invalid signal number has been supplied.
The siginterrupt function will fail if:
The sig argument is not a valid signal number.
The siginterrupt function supports programs written to
historical system interfaces.
A portable application, when being written or rewritten, should use
with the SA_RESTART flag instead of siginterrupt.
This routine conforms to X/Open System Interfaces and Headers,
Issue 4, Version 2.
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004