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getcwd(3)
NAME
  getcwd - Gets the pathname of the current directory

LIBRARY
  Standard C Library (libc.so, libc.a)
  System V Compatibility Library (libsys5.a)

SYNOPSIS
  Standard C Library:

  #include <unistd.h>

  char *getcwd(
	  char *buffer,
	  size_t size);

  System V Compatibility Library:

  char *getcwd(
	  char *buffer,
	  int size);

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

  getcwd() - libc version:   XPG4, XPG4-UNIX

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

PARAMETERS
  buffer    Points to a string space to hold the pathname.

  size	    Specifies the length of the string space in bytes.	The value of
	    the size parameter must be at least the length of the pathname to
	    be returned plus one byte for the terminating null.

DESCRIPTION
  The getcwd() function returns a pointer to a string containing the absolute
  pathname of the current directory.  The getwd() function is called to
  obtain the pathname.

  [Digital] If the buffer parameter is a null pointer, the getcwd() function,
  using the malloc() function, obtains the number of bytes of free space as
  specified by the size parameter.  In this case, the pointer returned by the
  getcwd() function can be used as the parameter in a subsequent call to the
  free() function.

NOTES
  [Digital]  The getcwd() function is supported for multithreaded
  applications.

RETURN VALUES
  Upon successful completion, getcwd() returns the buffer parameter.
  Otherwise, a null value is returned and errno is set to indicate the error.

ERRORS
  The getcwd() function sets errno to the specified values for the following
  conditions:

  [EACCES]  Read or search permission was denied for a component of the
	    pathname.

  [EINVAL]  The size parameter is zero.

	    [Digital] The size parameter is less than or equal to zero (for
	    the libsys5 version of getcwd() only).

  [ERANGE]  The size parameter is greater than zero, but is smaller than the
	    length of the pathname + 1.

  [ENOMEM]  The requested amount of memory could not be allocated.

RELATED INFORMATION
  Functions: malloc(3), getwd(3)

  Standards: standards(5)