ptsname_r()

Updated: May 06, 2022

Get the name of a slave pseudo-terminal device

Synopsis:

#include <stdlib.h>

char *ptsname_r( int filedes,
                 char *buffer,
                 size_t buflen );

Arguments:

filedes
The file descriptor for the master pseudo-terminal.
buffer
A pointer to a buffer where the function can store the name.
buflen
The length of the buffer, in bytes.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The ptsname_r() function gets the name of the slave pseudo-terminal device associated with a master pseudo-terminal device. It's a reentrant version of ptsname().

Returns:

A pointer to a NUL-terminated string containing the pathname of the corresponding slave device, or NULL if an error occurred (in QNX Neutrino 7.1 or later, errno is set).

Errors:

EBADF
The filedes argument isn't a valid file descriptor.
ENOTTY
The file associated with the filedes argument isn't a master pseudo-terminal device.
EOVERFLOW
The buffer is too small to hold the name.

Classification:

QNX Neutrino

Safety:  
Cancellation point No
Interrupt handler No
Signal handler Yes
Thread Yes