getwd(2) [plan9 man page]

GETWD(2)							System Calls Manual							  GETWD(2)

NAME

       getwd - get current directory

SYNOPSIS

       #include <u.h>
       #include <libc.h>

       char* getwd(char *buf, int size)

DESCRIPTION

       Getwd fills buf with a null-terminated string representing the current directory and returns buf.

       Getwd places no more than size bytes in the buffer provided.

SOURCE

       /sys/src/libc/9sys/getwd.c

SEE ALSO

       pwd(1)

DIAGNOSTICS

       On error, zero is returned and buf is filled with a diagnostic message.	Errstr(2) may be consulted for more information.

BUGS

       Because	mounts	and binds (see bind(2)) may produce multiple names for a directory, getwd might not return the path by which the directory
       was reached.

																	  GETWD(2)

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

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 process, and copy a string con-
       taining 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 applications 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, Standard for Information Technol-
       ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications 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 Standard, 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(P)