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Интерактивная система просмотра системных руководств (man-ов)

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ttyname (3)
  • >> ttyname (3) ( Solaris man: Библиотечные вызовы )
  • ttyname (3) ( FreeBSD man: Библиотечные вызовы )
  • ttyname (3) ( Русские man: Библиотечные вызовы )
  • ttyname (3) ( Linux man: Библиотечные вызовы )
  • ttyname (3) ( POSIX man: Библиотечные вызовы )
  •  

    NAME

    ttyname, ttyname_r - find pathname of
    a terminal
     
    

    SYNOPSIS

    #include <unistd.h> 
    
    char *ttyname(int fildes);
    

    char *ttyname_r(int fildes, char *name, int namelen);
    

     

    Standard conforming

    cc [ flag...] file ... -D_POSIX_PTHREAD_SEMANTICS [ library ... ]
    
    int ttyname_r(int fildes, char *name, size_t namesize);
    

     

    DESCRIPTION

    The ttyname() function returns a pointer to a string containing the null-terminated path name of the terminal device associated with file descriptor fildes. The return value points to thread-specific data whose content is overwritten by each call from the same thread.

    The ttyname_r() function has the same functionality as ttyname() except that the caller must supply a buffer name with length namelen to store the result; this buffer must be at least _POSIX_PATH_MAX in size (defined in <limits.h>). The standard-conforming version (see standards(5)) of ttyname_r() takes a namesize parameter of type size_t.  

    RETURN VALUES

    Upon successful completion, ttyname() and ttyname_r() return a pointer to a string. Otherwise, a null pointer is returned and errno is set to indicate the error.

    The standard-conforming ttyname_r() returns 0 if successful or the error number upon failure.  

    ERRORS

    The ttyname() and ttyname_r() functions may fail if:

    EBADF

    The fildes argument is not a valid file descriptor. This condition is reported.

    ENOTTY

    The fildes argument does not refer to a terminal device. This condition is reported.

    The ttyname_r() function may fail if:

    ERANGE

    The value of namesize is smaller than the length of the string to be returned including the terminating null character.

     

    ATTRIBUTES

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

    ATTRIBUTE TYPEATTRIBUTE VALUE

    Interface StabilityStandard

    MT-Level

     

    SEE ALSO

    Intro(3), gettext(3C), setlocale(3C), attributes(5), standards(5)  

    NOTES

    When compiling multithreaded applications, see Intro(3), Notes On Multithreaded Applications.

    Messages printed from this function are in the native language specified by the LC_MESSAGES locale category. See setlocale(3C).

    The return value of ttyname() points to thread-specific data whose content is overwritten by each call from the same thread. This function is safe to use in multithreaded applications, but its use is discouraged. The ttyname_r() function should used instead.

    Solaris 2.4 and earlier releases provided definitions of the ttyname_r() interface as specified in POSIX.1c Draft 6. The final POSIX.1c standard changed the interface as described above. Support for the Draft 6 interface is provided for compatibility only and might not be supported in future releases. New applications and libraries should use the standard-conforming interface.


     

    Index

    NAME
    SYNOPSIS
    Standard conforming
    DESCRIPTION
    RETURN VALUES
    ERRORS
    ATTRIBUTES
    SEE ALSO
    NOTES


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