1 files changed, 90 insertions, 0 deletions
diff --git a/libgfortran/intrinsics/access.c b/libgfortran/intrinsics/access.c
new file mode 100644
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+++ b/libgfortran/intrinsics/access.c
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+/* Implementation of the ACCESS intrinsic.
+   Copyright (C) 2006, 2007, 2009 Free Software Foundation, Inc.
+   Contributed by François-Xavier Coudert <coudert@clipper.ens.fr>
+
+This file is part of the GNU Fortran 95 runtime library (libgfortran).
+
+Libgfortran is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public
+License as published by the Free Software Foundation; either
+version 3 of the License, or (at your option) any later version.
+
+Libgfortran is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "libgfortran.h"
+
+#include <errno.h>
+#include <string.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+/* INTEGER FUNCTION ACCESS(NAME, MODE)
+   CHARACTER(len=*), INTENT(IN) :: NAME, MODE  */
+
+#ifdef HAVE_ACCESS
+extern int access_func (char *, char *, gfc_charlen_type, gfc_charlen_type);
+export_proto(access_func);
+
+int
+access_func (char *name, char *mode, gfc_charlen_type name_len,
+	     gfc_charlen_type mode_len)
+{
+  char * file;
+  gfc_charlen_type i;
+  int m;
+
+  /* Parse the MODE string.  */
+  m = F_OK;
+  for (i = 0; i < mode_len && mode[i]; i++)
+    switch (mode[i])
+      {
+	case ' ':
+	  break;
+
+	case 'r':
+	case 'R':
+	  m |= R_OK;
+	  break;
+
+	case 'w':
+	case 'W':
+	  m |= W_OK;
+	  break;
+
+	case 'x':
+	case 'X':
+	  m |= X_OK;
+	  break;
+
+	default:
+	  return -1;
+	  break;
+      }
+
+  /* Trim trailing spaces from NAME argument.  */
+  while (name_len > 0 && name[name_len - 1] == ' ')
+    name_len--;
+
+  /* Make a null terminated copy of the string.  */
+  file = gfc_alloca (name_len + 1);
+  memcpy (file, name, name_len);
+  file[name_len] = '\0';
+
+  /* And make the call to access().  */
+  return (access (file, m) == 0 ? 0 : errno);
+}
+#endif