intrinsic.c (add_functions): Add ACCESS, CHMOD, RSHIFT, LSHIFT.

	* intrinsic.c (add_functions): Add ACCESS, CHMOD, RSHIFT, LSHIFT.
	(add_subroutines): Add LTIME, GMTIME and CHMOD.
	* intrinsic.h (gfc_check_access_func, gfc_check_chmod,
	gfc_check_chmod_sub, gfc_check_ltime_gmtime, gfc_simplify_rshift,
	gfc_simplify_lshift, gfc_resolve_access, gfc_resolve_chmod,
	gfc_resolve_rshift, gfc_resolve_lshift, gfc_resolve_chmod_sub,
	gfc_resolve_gmtime, gfc_resolve_ltime): Add prototypes.
	* gfortran.h (gfc_generic_isym_id): Add GFC_ISYM_ACCESS,
	GFC_ISYM_CHMOD, GFC_ISYM_LSHIFT, GFC_ISYM_RSHIFT.
	* iresolve.c (gfc_resolve_access, gfc_resolve_chmod,
	gfc_resolve_rshift, gfc_resolve_lshift, gfc_resolve_chmod_sub,
	gfc_resolve_gmtime, gfc_resolve_ltime): New functions.
	* check.c (gfc_check_access_func, gfc_check_chmod,
	gfc_check_chmod_sub, gfc_check_ltime_gmtime): New functions.
	* trans-intrinsic.c (gfc_conv_intrinsic_rlshift): New function.
	(gfc_conv_intrinsic_function): Add cases for the new GFC_ISYM_*.

	* intrinsics/date_and_time.c: Add functions for GMTIME and LTIME.
	* intrinsics/access.c: New file.
	* intrinsics/chmod.c: New file.
	* configure.ac: Add checks for <sys/wait.h>, access, fork,execl
	and wait.
	* Makefile.am: Add new files intrinsics/access.c and
	intrinsics/chmod.c.
	* configure: Regenerate.
	* config.h.in: Regenerate.
	* Makefile.in: Regenerate.

	* gcc/testsuite/gfortran.dg/chmod_3.f90: New test.
	* gcc/testsuite/gfortran.dg/ltime_gmtime_1.f90: New test.
	* gcc/testsuite/gfortran.dg/ltime_gmtime_2.f90: New test.
	* gcc/testsuite/gfortran.dg/lrshift_1.f90: New test.
	* gcc/testsuite/gfortran.dg/chmod_1.f90: New test.
	* gcc/testsuite/gfortran.dg/chmod_2.f90: New test.

From-SVN: r115825

1 files changed, 131 insertions, 0 deletions

diff --git a/libgfortran/intrinsics/chmod.c b/libgfortran/intrinsics/chmod.c
new file mode 100644
index 0000000..abc5b99
--- /dev/null
+++ b/libgfortran/intrinsics/chmod.c
@@ -0,0 +1,131 @@
+/* Implementation of the CHMOD intrinsic.
+   Copyright (C) 2006 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 2 of the License, or (at your option) any later version.
+
+In addition to the permissions in the GNU General Public License, the
+Free Software Foundation gives you unlimited permission to link the
+compiled version of this file into combinations with other programs,
+and to distribute those combinations without any restriction coming
+from the use of this file.  (The General Public License restrictions
+do apply in other respects; for example, they cover modification of
+the file, and distribution when not linked into a combine
+executable.)
+
+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.
+
+You should have received a copy of the GNU General Public
+License along with libgfortran; see the file COPYING.  If not,
+write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA.  */
+
+#include "config.h"
+#include "libgfortran.h"
+
+#include <errno.h>
+
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+#ifdef  HAVE_SYS_WAIT_H
+#include <sys/wait.h>
+#endif
+
+/* INTEGER FUNCTION ACCESS(NAME, MODE)
+   CHARACTER(len=*), INTENT(IN) :: NAME, MODE  */
+
+#if defined(HAVE_FORK) && defined(HAVE_EXECL) && defined(HAVE_WAIT)
+
+extern int chmod_func (char *, char *, gfc_charlen_type, gfc_charlen_type);
+export_proto(chmod_func);
+
+int
+chmod_func (char *name, char *mode, gfc_charlen_type name_len,
+	    gfc_charlen_type mode_len)
+{
+  char * file, * m;
+  pid_t pid;
+  int status;
+
+  /* Trim trailing spaces.  */
+  while (name_len > 0 && name[name_len - 1] == ' ')
+    name_len--;
+  while (mode_len > 0 && mode[mode_len - 1] == ' ')
+    mode_len--;
+
+  /* Make a null terminated copy of the strings.  */
+  file = gfc_alloca (name_len + 1);
+  memcpy (file, name, name_len);
+  file[name_len] = '\0';
+
+  m = gfc_alloca (mode_len + 1);
+  memcpy (m, mode, mode_len);
+  m[mode_len]= '\0';
+
+  /* Execute /bin/chmod.  */
+  if ((pid = fork()) < 0)
+    return errno;
+  if (pid == 0)
+    {
+      /* Child process.  */
+      execl ("/bin/chmod", "chmod", m, file, (char *) NULL);
+      return errno;
+    }
+  else
+    wait (&status);
+
+  if (WIFEXITED(status))
+    return WEXITSTATUS(status);
+  else
+    return -1;
+}
+
+
+
+extern void chmod_i4_sub (char *, char *, GFC_INTEGER_4 *,
+			  gfc_charlen_type, gfc_charlen_type);
+export_proto(chmod_i4_sub);
+
+void
+chmod_i4_sub (char *name, char *mode, GFC_INTEGER_4 * status,
+	      gfc_charlen_type name_len, gfc_charlen_type mode_len)
+{
+  int val;
+
+  val = chmod_func (name, mode, name_len, mode_len);
+  if (status)
+    *status = val;
+}
+
+
+extern void chmod_i8_sub (char *, char *, GFC_INTEGER_8 *,
+			  gfc_charlen_type, gfc_charlen_type);
+export_proto(chmod_i8_sub);
+
+void
+chmod_i8_sub (char *name, char *mode, GFC_INTEGER_8 * status,
+	      gfc_charlen_type name_len, gfc_charlen_type mode_len)
+{
+  int val;
+
+  val = chmod_func (name, mode, name_len, mode_len);
+  if (status)
+    *status = val;
+}
+
+#endif