Name
siginterrupt — allow signals to interrupt system calls
Synopsis
#include <signal.h>
int
siginterrupt( |
int sig, |
int flag); |
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Note | ||||
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DESCRIPTION
The siginterrupt() function
changes the restart behavior 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 behavior in Linux.
If the flag
argument is true (1) and no data has been transferred, then a
system call interrupted by the signal sig will return −1 and
errno will be set to
EINTR.
If the flag
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. It returns −1 if the signal
number sig is
invalid, with errno set to
indicate the cause of the error.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
siginterrupt() |
Thread safety | MT-Unsafe const:sigintr |
CONFORMING TO
4.3BSD, POSIX.1-2001. POSIX.1-2008 marks siginterrupt() as obsolete, recommending
the use of sigaction(2) with the
SA_RESTART flag instead.
COLOPHON
This page is part of release 4.07 of the Linux man-pages project. A
description of the project, information about reporting bugs,
and the latest version of this page, can be found at
https://www.kernel.org/doc/man−pages/.
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Copyright 1993 David Metcalfe (davidprism.demon.co.uk) %%%LICENSE_START(VERBATIM) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. %%%LICENSE_END References consulted: Linux libc source code Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) 386BSD man pages Modified Sun Jul 25 10:40:51 1993 by Rik Faith (faithcs.unc.edu) Modified Sun Apr 14 16:20:34 1996 by Andries Brouwer (aebcwi.nl) |