157 lines
3.8 KiB
HTML
157 lines
3.8 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of SIGINTERRUPT</TITLE>
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</HEAD><BODY>
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<H1>SIGINTERRUPT</H1>
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Section: Linux Programmer's Manual (3)<BR>Updated: 2016-03-15<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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siginterrupt - allow signals to interrupt system calls
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<PRE>
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<B>#include <<A HREF="file:///usr/include/signal.h">signal.h</A>></B>
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<B>int siginterrupt(int </B><I>sig</I><B>, int </B><I>flag</I><B>);</B>
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</PRE>
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<P>
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Feature Test Macro Requirements for glibc (see
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<B><A HREF="/cgi-bin/man/man2html?7+feature_test_macros">feature_test_macros</A></B>(7)):
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<P>
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<B>siginterrupt</B>():
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<DL COMPACT><DT id="1"><DD>
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_XOPEN_SOURCE >= 500
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<BR> || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
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<BR> || /* Glibc versions <= 2.19: */ _BSD_SOURCE
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</DL>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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The
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<B>siginterrupt</B>()
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function changes the restart behavior when
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a system call is interrupted by the signal <I>sig</I>.
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If the <I>flag</I>
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argument is false (0), then system calls will be restarted if interrupted
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by the specified signal <I>sig</I>.
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This is the default behavior in Linux.
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<P>
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If the <I>flag</I> argument is true (1) and no data has been transferred,
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then a system call interrupted by the signal <I>sig</I> will return -1
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and <I>errno</I> will be set to
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<B>EINTR</B>.
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<P>
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If the <I>flag</I> argument is true (1) and data transfer has started,
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then the system call will be interrupted and will return the actual
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amount of data transferred.
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<A NAME="lbAE"> </A>
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<H2>RETURN VALUE</H2>
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The
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<B>siginterrupt</B>()
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function returns 0 on success.
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It returns -1 if the
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signal number
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<I>sig</I>
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is invalid, with
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<I>errno</I>
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set to indicate the cause of the error.
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<A NAME="lbAF"> </A>
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<H2>ERRORS</H2>
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<DL COMPACT>
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<DT id="2"><B>EINVAL</B>
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<DD>
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The specified signal number is invalid.
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</DL>
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<A NAME="lbAG"> </A>
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<H2>ATTRIBUTES</H2>
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For an explanation of the terms used in this section, see
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<B><A HREF="/cgi-bin/man/man2html?7+attributes">attributes</A></B>(7).
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<TABLE BORDER>
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<TR VALIGN=top><TD><B>Interface</B></TD><TD><B>Attribute</B></TD><TD><B>Value</B><BR></TD></TR>
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<TR VALIGN=top><TD>
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<B>siginterrupt</B>()
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</TD><TD>Thread safety</TD><TD>MT-Unsafe const:sigintr<BR></TD></TR>
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</TABLE>
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<A NAME="lbAH"> </A>
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<H2>CONFORMING TO</H2>
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4.3BSD, POSIX.1-2001.
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POSIX.1-2008 marks
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<B>siginterrupt</B>()
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as obsolete, recommending the use of
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<B><A HREF="/cgi-bin/man/man2html?2+sigaction">sigaction</A></B>(2)
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with the
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<B>SA_RESTART</B>
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flag instead.
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<A NAME="lbAI"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?2+signal">signal</A></B>(2)
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<A NAME="lbAJ"> </A>
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<H2>COLOPHON</H2>
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This page is part of release 5.05 of the Linux
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<I>man-pages</I>
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project.
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A description of the project,
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information about reporting bugs,
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and the latest version of this page,
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can be found at
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<A HREF="https://www.kernel.org/doc/man-pages/.">https://www.kernel.org/doc/man-pages/.</A>
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="3"><A HREF="#lbAB">NAME</A><DD>
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<DT id="4"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="5"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="6"><A HREF="#lbAE">RETURN VALUE</A><DD>
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<DT id="7"><A HREF="#lbAF">ERRORS</A><DD>
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<DT id="8"><A HREF="#lbAG">ATTRIBUTES</A><DD>
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<DT id="9"><A HREF="#lbAH">CONFORMING TO</A><DD>
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<DT id="10"><A HREF="#lbAI">SEE ALSO</A><DD>
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<DT id="11"><A HREF="#lbAJ">COLOPHON</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:56 GMT, March 31, 2021
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</HTML>
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