sgetmask(2) — Справочная страница Linux

sgetmask(2)                System Calls Manual               sgetmask(2)

ИМЯ

       sgetmask, ssetmask - manipulation of signal mask (obsolete)

БИБЛИОТЕКА

       Standard C library (libc, -lc)

СИНТАКСИС

       #include <sys/syscall.h>      /* Definition of SYS_* constants */
       #include <unistd.h>

       [[deprecated]] long syscall(SYS_sgetmask, void);
       [[deprecated]] long syscall(SYS_ssetmask, long newmask);

ОПИСАНИЕ

       These system calls are obsolete.  Do not use them; use
       sigprocmask(2) instead.

       sgetmask() returns the signal mask of the calling process.

       ssetmask() sets the signal mask of the calling process to the
       value given in newmask.  The previous signal mask is returned.

       The signal masks dealt with by these two system calls are plain
       bit masks (unlike the sigset_t used by sigprocmask(2)); use
       sigmask(3) to create and inspect these masks.

ЗНАЧЕНИЕ, ВОЗВРАЩАЕМОЕ ФУНКЦИЕЙ

       sgetmask() always successfully returns the signal mask.
       ssetmask() always succeeds, and returns the previous signal mask.

ОШИБКИ

       These system calls always succeed.

СТАНДАРТЫ

       Linux.

ИСТОРИЯ

       Since Linux 3.16, support for these system calls is optional,
       depending on whether the kernel was built with the
       CONFIG_SGETMASK_SYSCALL option.

ПРИМЕЧАНИЯ

       These system calls are unaware of signal numbers greater than 31
       (i.e., real-time signals).

       These system calls do not exist on x86-64.

       It is not possible to block SIGSTOP or SIGKILL.

СМОТРИТЕ ТАКЖЕ

       sigprocmask(2), signal(7)

КОЛОФОН

       This page is part of the man-pages (Linux kernel and C library
       user-space interface documentation) project.  Information about
       the project can be found at 
       ⟨https://www.kernel.org/doc/man-pages/⟩.  If you have a bug report
       for this manual page, see
       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
       This page was obtained from the tarball man-pages-6.9.1.tar.gz
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       man-pages@man7.org

Linux man-pages 6.9.1          2024-05-02                    sgetmask(2)

Страницы, ссылающиеся на эту страницу: syscalls(2), signal(7)