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GETWD(3P)                  POSIX Programmer's Manual                 GETWD(3P)



PROLOG
       This manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may dif-
       fer (consult the corresponding Linux manual page for details of Linux behavior), or the interface  may  not  be
       implemented on Linux.

NAME
       getwd - get the current working directory pathname (LEGACY)

SYNOPSIS
       #include <unistd.h>

       char *getwd(char *path_name);


DESCRIPTION
       The  getwd() function shall determine an absolute pathname of the current working directory of the calling pro-
       cess, and copy a string containing that pathname into the array pointed to by the path_name argument.

       If the length of the pathname of the current working directory is greater  than  ({PATH_MAX}+1)  including  the
       null byte, getwd() shall fail and return a null pointer.

RETURN VALUE
       Upon  successful  completion,  a  pointer to the string containing the absolute pathname of the current working
       directory shall be returned. Otherwise, getwd() shall return a null pointer  and  the  contents  of  the  array
       pointed to by path_name are undefined.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       For  applications  portability, the getcwd() function should be used to determine the current working directory
       instead of getwd().

RATIONALE
       Since the user cannot specify the length of the buffer passed to getwd(), use of this function is  discouraged.
       The  length of a pathname described in {PATH_MAX} is file system-dependent and may vary from one mount point to
       another, or might even be unlimited. It is possible to overflow this buffer in such a way as to cause  applica-
       tions to fail, or possible system security violations.

       It is recommended that the getcwd() function should be used to determine the current working directory.

FUTURE DIRECTIONS
       This function may be withdrawn in a future version.

SEE ALSO
       getcwd(), the Base Definitions volume of IEEE Std 1003.1-2001, <unistd.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Stan-
       dard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base  Specifica-
       tions  Issue  6,  Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The
       Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Stan-
       dard,  the  original  IEEE  and  The  Open Group Standard is the referee document. The original Standard can be
       obtained online at http://www.opengroup.org/unix/online.html .



IEEE/The Open Group                  2003                            GETWD(3P)