PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT

SIGINTERRUPT(3P)          POSIX Programmer's Manual         SIGINTERRUPT(3P)

PROLOG         top

       This manual page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the
       corresponding Linux manual page for details of Linux behavior), or
       the interface may not be implemented on Linux.

NAME         top

       siginterrupt — allow signals to interrupt functions

SYNOPSIS         top

       #include <signal.h>

       int siginterrupt(int sig, int flag);

DESCRIPTION         top

       The siginterrupt() function shall change the restart behavior when a
       function is interrupted by the specified signal. The function
       siginterrupt(sig, flag) has an effect as if implemented as:

           int siginterrupt(int sig, int flag) {
               int ret;
               struct sigaction act;

               (void) sigaction(sig, NULL, &act);
               if (flag)
                   act.sa_flags &= ~SA_RESTART;
               else
                   act.sa_flags |= SA_RESTART;
               ret = sigaction(sig, &act, NULL);
               return ret;
           }

RETURN VALUE         top

       Upon successful completion, siginterrupt() shall return 0; otherwise,
       −1 shall be returned and errno set to indicate the error.

ERRORS         top

       The siginterrupt() function shall fail if:

       EINVAL The sig argument is not a valid signal number.

       The following sections are informative.

EXAMPLES         top

       None.

APPLICATION USAGE         top

       The siginterrupt() function supports programs written to historical
       system interfaces.  Applications should use the sigaction() with the
       SA_RESTART flag instead of the obsolescent siginterrupt() function.

RATIONALE         top

       None.

FUTURE DIRECTIONS         top

       None.

SEE ALSO         top

       Section 2.4, Signal Concepts, sigaction(3p)

       The Base Definitions volume of POSIX.1‐2008, signal.h(0p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The Open
       Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
       applied.) In the event of any discrepancy between this version and
       the original IEEE and The Open Group Standard, the original IEEE and
       The Open Group Standard is the referee document. The original
       Standard can be obtained online at http://www.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the
       source files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group                 2013                    SIGINTERRUPT(3P)