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   siginterrupt.3p    ( 3 )

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Пролог (Prolog)

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.

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Имя (Name)

siginterrupt — allow signals to interrupt functions

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Синопсис (Synopsis)

#include <signal.h>

       int siginterrupt(int sig, int flag);

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Описание (Description)

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;
           }

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Возвращаемое значение (Return value)

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

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Ошибки (Error)

The siginterrupt() function shall fail if:

       EINVAL The sig argument is not a valid signal number.

       The following sections are informative.

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Примеры (Examples)

None.

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Использование в приложениях (Application usage)

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.

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Обоснование (Rationale)

None.

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Будущие направления (Future directions)

None.

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Смотри также (See also)

Section 2.4, Signal Concepts, sigaction(3p)

       The Base Definitions volume of POSIX.1‐2017, signal.h(0p)

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