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   grantpt.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)

grantpt — grant access to the slave pseudo-terminal device

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Синопсис (Synopsis)

#include <stdlib.h>

       int grantpt(int fildes);

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Описание (Description)

The grantpt() function shall change the mode and ownership of the
       slave pseudo-terminal device associated with its master pseudo-
       terminal counterpart. The fildes argument is a file descriptor
       that refers to a master pseudo-terminal device. The user ID of
       the slave shall be set to the real UID of the calling process and
       the group ID shall be set to an unspecified group ID. The
       permission mode of the slave pseudo-terminal shall be set to
       readable and writable by the owner, and writable by the group.

       The behavior of the grantpt() function is unspecified if the
       application has installed a signal handler to catch SIGCHLD
       signals.

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Возвращаемое значение (Return value)

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

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Ошибки (Error)

The grantpt() function may fail if:

       EACCES The corresponding slave pseudo-terminal device could not
              be accessed.

       EBADF  The fildes argument is not a valid open file descriptor.

       EINVAL The fildes argument is not associated with a master
              pseudo-terminal device.

       The following sections are informative.

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Примеры (Examples)

None.

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Использование в приложениях (Application usage)

None.

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Обоснование (Rationale)

See the RATIONALE section for posix_openpt(3p).

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Будущие направления (Future directions)

None.

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Смотри также (See also)

open(3p), posix_openpt(3p), ptsname(3p), unlockpt(3p)

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

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