`ptsname.3p` ( 3 )

оконечное устройство (terminal device)

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)

ptsname — get name of the slave pseudo-terminal device

Синопсис (Synopsis)

#include <stdlib.h>

char *ptsname(int fildes);

Описание (Description)

The ptsname() function shall return the name of the slave pseudo- terminal device associated with a master pseudo-terminal device. The fildes argument is a file descriptor that refers to the master device. The ptsname() function shall return a pointer to a string containing the pathname of the corresponding slave device.

The ptsname() function need not be thread-safe.

Возвращаемое значение (Return value)

Upon successful completion, ptsname() shall return a pointer to a string which is the name of the pseudo-terminal slave device. Upon failure, ptsname() shall return a null pointer and may set errno. This could occur if fildes is an invalid file descriptor or if the slave device name does not exist in the file system.

The application shall not modify the string returned. The returned pointer might be invalidated or the string content might be overwritten by a subsequent call to ptsname(). The returned pointer and the string content might also be invalidated if the calling thread is terminated.

Ошибки (Error)

The ptsname() function may fail if:

EBADF The fildes argument is not a valid file descriptor.

ENOTTY The file associated with the fildes argument is not a master pseudo-terminal device.

The following sections are informative.

Примеры (Examples)

None.

Использование в приложениях (Application usage)

None.

Обоснование (Rationale)

See the RATIONALE section for posix_openpt(3p).

Будущие направления (Future directions)