ptsname_r(3) [osf1 man page]

ptsname(3)						     Library Functions Manual							ptsname(3)

NAME

       ptsname, ptsname_r - Gets the name of a slave pseudoterminal device

LIBRARY

       Standard C Library (libc)

SYNOPSIS

       #include <stdlib.h>

       char *ptsname(	   int masterfd);

       The  following  function is not defined in current industry standards and is supported only for backward compatibility.	You should not use
       it in new designs.

       int ptsname_r(	   int masterfd,      char *slavename,	    int len);

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       ptsname(): XSH5.0

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

PARAMETERS

       Specifies a file descriptor that is returned from a successful open of the master pty.  Points to the character	array  for  the  resulting
       null-terminated pathname of the slave pty.  Specifies the length of the slave pty specified by slavename.  This length must be 32 bytes.

DESCRIPTION

       The ptsname() function returns the name of the slave pseudoterminal device associated with a master pseudoterminal device.

NOTES

       The  ptsname()  function  returns a pointer to thread-specific data.  Subsequent calls to this function from the same thread overwrite this
       data.

       [Tru64 UNIX]  The ptsname_r() function is an obsolete reentrant version of the ptsname() function.  It is supported in  order  to  maintain
       backward compatibility with previous versions of the operating system and should not be used in new designs.

RETURN VALUES

       Upon  successful  completion,  the  ptsname() function returns a pointer to a string that contains the pathname of the slave pseudoterminal
       device.	The pathname has the form: /dev/pts /N.  Upon failure, it returns a null pointer.  The function can fail if the masterfd parameter
       is an invalid file descriptor or if the slave device name does not exist in the file system.

       [Tru64  UNIX]  Upon successful completion, the ptsname_r() function stores a the string in slavename and returns a value of 0 (zero).  Upon
       failure, it returns a value of -1 and may place an appropriate value in the errno variable.

ERRORS

       If the following conditions occur, the ptsname_r() function sets errno to the following value: [Tru64  UNIX]  The  slavename  parameter	is
       invalid or the len parameter is too small.

RELATED INFORMATION

       Functions: openpty(3), pty(7)

       Standards: standards(5) delim off

																	ptsname(3)

Check Out this Related Man Page

PTSNAME(3)						     Linux Programmer's Manual							PTSNAME(3)

NAME

       ptsname, ptsname_r - get the name of the slave pseudoterminal

SYNOPSIS

       #define _XOPEN_SOURCE	   /* See feature_test_macros(7) */
       #include <stdlib.h>

       char *ptsname(int fd);

       #define _GNU_SOURCE	   /* See feature_test_macros(7) */
       #include <stdlib.h>

       int ptsname_r(int fd, char *buf, size_t buflen);

DESCRIPTION

       The ptsname() function returns the name of the slave pseudoterminal device corresponding to the master referred to by fd.

       The ptsname_r() function is the reentrant equivalent of ptsname().  It returns the name of the slave pseudoterminal device as a null-termi-
       nated string in the buffer pointed to by buf.  The buflen argument specifies the number of bytes available in buf.

RETURN VALUE

       On success, ptsname() returns a pointer to a string in static storage which will be overwritten by subsequent calls.  This pointer must not
       be freed.  On failure, a NULL pointer is returned.

       On success, ptsname_r() returns 0.  On failure, a nonzero value is returned and errno is set to indicate the error.

ERRORS

       EINVAL (ptsname_r() only) buf is NULL.

       ENOTTY fd does not refer to a pseudoterminal master device.

       ERANGE (ptsname_r() only) buf is too small.

VERSIONS

       ptsname() is provided in glibc since version 2.1.

CONFORMING TO

       ptsname() is part of the UNIX 98 pseudoterminal support (see pts(4)).  This function is specified in POSIX.1-2001.

       ptsname_r()  is	a  Linux  extension.   A  version  of  this function is documented on Tru64 and HP-UX, but on those implementations, -1 is
       returned on error, with errno set to indicate the error.  Avoid using this function in portable programs.

SEE ALSO

       grantpt(3), posix_openpt(3), ttyname(3), unlockpt(3), pts(4), pty(7)

COLOPHON

       This page is part of release 3.44 of the Linux man-pages project.  A description of the project, and information about reporting bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

								    2008-09-03								PTSNAME(3)

Linux and UNIX Man Pages

ptsname_r(3) [osf1 man page]

Check Out this Related Man Page