blob: a19d26796d5715c74c3a7b95b1e3570ab8b22a09 [file] [log] [blame]
/* Emulate getcwd using getwd.
This function is in the public domain. */
@deftypefn Supplemental char* getcwd (char *@var{pathname}, int @var{len})
Copy the absolute pathname for the current working directory into
@var{pathname}, which is assumed to point to a buffer of at least
@var{len} bytes, and return a pointer to the buffer. If the current
directory's path doesn't fit in @var{len} characters, the result is
@code{NULL} and @code{errno} is set. If @var{pathname} is a null pointer,
@code{getcwd} will obtain @var{len} bytes of space using
@end deftypefn
#include "config.h"
#include <sys/param.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
extern char *getwd ();
extern int errno;
#define MAXPATHLEN 1024
char *
getcwd (buf, len)
char *buf;
size_t len;
char ourbuf[MAXPATHLEN];
char *result;
result = getwd (ourbuf);
if (result) {
if (strlen (ourbuf) >= len) {
errno = ERANGE;
return 0;
if (!buf) {
buf = (char*)malloc(len);
if (!buf) {
errno = ENOMEM;
return 0;
strcpy (buf, ourbuf);
return buf;