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 sys-
       tem 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) func-
       tion, 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)