(BSD System Compatibility)
siginterrupt(3bsd)
siginterrupt --
(BSD) allow signals to interrupt system calls
Synopsis
/usr/ucb/cc [flag . . . ] file . . .
int siginterrupt(int sig, int flag);
Description
siginterrupt
is used to change the system call restart
behavior when a system call is interrupted by the specified signal.
If the flag is false (0), then system calls 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(3bsd)
routine is used.
If the flag is true (1), 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.
Return values
A 0 value indicates that the call succeeded.
A -1 value indicates that an invalid signal number has been supplied.
References
sigblock(3bsd),
signal(2),
signal(3bsd),
sigpause(3bsd),
sigsetmask(3bsd),
sigvec(3bsd)
Notices
This library routine uses an extension of the
sigvec(3bsd)
system call that is not available in 4.2BSD,
hence it should not be used if backward compatibility is needed.
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004