Manpage of SIGINTERRUPT

SIGINTERRUPT

Section: Linux Programmer's Manual (3)
Updated: 2016-03-15
Index
 

NAME

siginterrupt - allow signals to interrupt system calls  

SYNOPSIS

#include <signal.h>int siginterrupt(int sig, int flag);

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

siginterrupt():

_XOPEN_SOURCE >= 500
    || /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
    || /* Glibc versions <= 2.19: */ _BSD_SOURCE
 

DESCRIPTION

The siginterrupt() function changes the restart behavior when a system call is interrupted by the signal sig. If the flagargument 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 sigis invalid, with errnoset to indicate the cause of the error.  

ERRORS

EINVAL
The specified signal number is invalid.
 

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).
InterfaceAttributeValue
siginterrupt() Thread safetyMT-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_RESTARTflag instead.  

SEE ALSO

signal(2)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
ATTRIBUTES
CONFORMING TO
SEE ALSO

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Time: 22:27:51 GMT, June 20, 2016