NAME
siginterrupt - allow signals to interrupt system calls
SYNOPSIS
#include <signal.h>
I int siginterrupt(int sig , int flag );
DESCRIPTION
The
R siginterrupt ()
function changes the restart behavior when
a system call is interrupted by the signal
sig.
If the
flag
argument is false (0), then system calls will be restarted if interrupted
by the specified signal
sig.
This is the default behavior in Linux.
However, when a new signal handler is specified with the
signal(2)
function, the system call is interrupted by default.
If the flags argument is true (1) and no data has been transferred,
then a system call interrupted by the signal sig will return -1
and the global variable errno will be set to EINTR.
If the flags argument is true (1) and data transfer has started,
then the system call will be interrupted and will return the actual
amount of data transferred.
RETURN VALUE
The
R siginterrupt ()
function returns 0 on success, or -1 if the
signal number sig is invalid.
ERRORS
EINVAL
The specified signal number is invalid.
CONFORMING TO
4.3BSD, POSIX.1-2001.
SEE ALSO
ČLÁNKY DO MAILU