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ctermid_r (3)
  • >> ctermid_r (3) ( FreeBSD man: Библиотечные вызовы )

  • BSD mandoc
     

    NAME

    
    
    ctermid
    
     - generate terminal pathname
    
     
    

    LIBRARY

    Lb libc
    
     
    

    SYNOPSIS

       #include <stdio.h>
    char * ctermid (char *buf);
    char * ctermid_r (char *buf);
     

    DESCRIPTION

    The ctermid ();
    function generates a string, that, when used as a pathname, refers to the current controlling terminal of the calling process.

    If Fa buf is the NULL pointer, a pointer to a static area is returned. Otherwise, the pathname is copied into the memory referenced by Fa buf . The argument Fa buf is assumed to be at least L_ctermid (as defined in the include file In stdio.h ) bytes long.

    The ctermid_r ();
    function provides the same functionality as ctermid ();
    except that if Fa buf is a NULL pointer, NULL is returned.

    The current implementation simply returns `/dev/tty'  

    RETURN VALUES

    Upon successful completion, a non- NULL pointer is returned. Otherwise, a NULL pointer is returned and the global variable errno is set to indicate the error.  

    ERRORS

    The current implementation detects no error conditions.  

    SEE ALSO

    ttyname(3)  

    STANDARDS

    The ctermid ();
    function conforms to St -p1003.1-88 .  

    BUGS

    By default the ctermid ();
    function writes all information to an internal static object. Subsequent calls to ctermid ();
    will modify the same object.


     

    Index

    NAME
    LIBRARY
    SYNOPSIS
    DESCRIPTION
    RETURN VALUES
    ERRORS
    SEE ALSO
    STANDARDS
    BUGS


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