redhat man page for siginterrupt

SIGINTERRUPT(3) 					     Linux Programmer's Manual						   SIGINTERRUPT(3)

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.   How-
       ever, 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)

								    1993-04-13							   SIGINTERRUPT(3)