forked from colinbenner/ocaml-llvm
/
readlink.c
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/
readlink.c
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/***********************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. All rights reserved. This file is distributed */
/* under the terms of the GNU Library General Public License, with */
/* the special exception on linking described in file ../../LICENSE. */
/* */
/***********************************************************************/
/* $Id$ */
#include <mlvalues.h>
#include <alloc.h>
#include <fail.h>
#ifdef HAS_SYMLINK
#include <sys/param.h>
#include "unixsupport.h"
#ifndef PATH_MAX
#ifdef MAXPATHLEN
#define PATH_MAX MAXPATHLEN
#else
#define PATH_MAX 512
#endif
#endif
CAMLprim value unix_readlink_r(CAML_R, value path)
{
char buffer[PATH_MAX];
int len;
len = readlink(String_val(path), buffer, sizeof(buffer) - 1);
if (len == -1) uerror_r(ctx,"readlink", path);
buffer[len] = '\0';
return caml_copy_string_r(ctx,buffer);
}
#else
CAMLprim value unix_readlink_r(CAML_R, value path)
{ caml_invalid_argument_r(ctx,"readlink not implemented"); }
#endif