ttyname man page on SmartOS

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TTYNAME(3C)							   TTYNAME(3C)

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 stan‐
       dards(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 con‐
		 dition 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  charac‐
		 ter.

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

       ┌────────────────────┬─────────────────┐
       │  ATTRIBUTE TYPE    │ ATTRIBUTE VALUE │
       ├────────────────────┼─────────────────┤
       │Interface Stability │ Standard	      │
       ├────────────────────┼─────────────────┤
       │MT-Level	    │ Safe	      │
       └────────────────────┴─────────────────┘

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

NOTES
       When  compiling multithreaded applications, see Intro(3), Notes On Mul‐
       tithreaded Applications.

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

       The return value of ttyname() points to thread-specific data whose con‐
       tent 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  tty‐
       name_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.

				 Mar 31, 2005			   TTYNAME(3C)
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