NAME

       siginterrupt - allow signals to interrupt system calls

SYNOPSIS

       #include <signal.h>

       int siginterrupt(int sig, int flag);

DESCRIPTION

       The siginterrupt() function changes the restart behaviour 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 behaviour 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 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

       BSD 4.3

SEE ALSO

       signal(2)

                                                 April 13, 1993                                  SIGINTERRUPT(3)