Content-type: text/html Man page of unlockpt

unlockpt

Section: Standard C Library Functions (3C)
Updated: 14 Aug 2002
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NAME

unlockpt - unlock a pseudo-terminal master/slave pair  

SYNOPSIS

#include <stdlib.h>

int unlockpt(int fildes);  

DESCRIPTION

The unlockpt() function unlocks the slave pseudo-terminal device associated with the master to which fildes refers.

Portable applications must call unlockpt() before opening the slave side of a pseudo-terminal device.  

RETURN VALUES

Upon successful completion, unlockpt() returns 0. Otherwise, it returns -1 and sets errno to indicate the error.  

ERRORS

The unlockpt() function may fail if:

EBADF The fildes argument is not a file descriptor open for writing.

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

 

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
Interface StabilityStandard
MT-LevelSafe

 

SEE ALSO

open(2), grantpt(3C), ptsname(3C), attributes(5), standards(5)

STREAMS Programming Guide


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
ERRORS
ATTRIBUTES
SEE ALSO

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Time: 02:37:21 GMT, October 02, 2010