Путеводитель по Руководству Linux

  User  |  Syst  |  Libr  |  Device  |  Files  |  Other  |  Admin  |  Head  |



   getsid.3p    ( 3 )

получить идентификатор группы процессов лидера сеанса (get the process group ID of a session leader)

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.

Имя (Name)

getsid — get the process group ID of a session leader

Синопсис (Synopsis)

#include <unistd.h>

pid_t getsid(pid_t pid);


Описание (Description)

The getsid() function shall obtain the process group ID of the
       process that is the session leader of the process specified by
       pid.  If pid is (pid_t)0, it specifies the calling process.

Возвращаемое значение (Return value)

Upon successful completion, getsid() shall return the process
       group ID of the session leader of the specified process.
       Otherwise, it shall return -1 and set errno to indicate the
       error.

Ошибки (Error)

The getsid() function shall fail if:

EPERM The process specified by pid is not in the same session as the calling process, and the implementation does not allow access to the process group ID of the session leader of that process from the calling process.

ESRCH There is no process with a process ID equal to pid.

The following sections are informative.


Примеры (Examples)

None.

Использование в приложениях (Application usage)

None.

Обоснование (Rationale)

None.

Будущие направления (Future directions)

None.

Смотри также (See also)

exec(1p), fork(3p), getpid(3p), getpgid(3p), setpgid(3p),
       setsid(3p)

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