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siginterrupt(3c) [opensolaris man page]

siginterrupt(3C)					   Standard C Library Functions 					  siginterrupt(3C)

NAME
siginterrupt - allow signals to interrupt functions SYNOPSIS
#include <signal.h> int siginterrupt(int sig, int flag); DESCRIPTION
The siginterrupt() function changes the restart behavior when a function is interrupted by the specified signal. The function siginter- rupt(sig, flag) has an effect as if implemented as: 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 VALUES
Upon successful completion, siginterrupt() returns 0. Otherwise, -1 is returned and errno is set to indicate the error. ERRORS
The siginterrupt() function will fail if: EINVAL The sig argument is not a valid signal number. USAGE
The siginterrupt() function supports programs written to historical system interfaces. A standard-conforming application, when being writ- ten or rewritten, should use sigaction(2) with the SA_RESTART flag instead of siginterrupt(). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
sigaction(2), signal.h(3HEAD), attributes(5), standards(5) SunOS 5.11 1 Sep 2003 siginterrupt(3C)

Check Out this Related Man Page

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); 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 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. ERRORS
EINVAL The specified signal number is invalid. 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. SEE ALSO
signal(2) COLOPHON
This page is part of release 4.15 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/. 2016-03-15 SIGINTERRUPT(3)
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