/* Implementation of the GETLOG g77 intrinsic.
- Copyright (C) 2005 Free Software Foundation, Inc.
+ Copyright (C) 2005, 2007, 2009, 2011 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).
+This file is part of the GNU Fortran 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.)
+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.
-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., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+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 "config.h"
#include "libgfortran.h"
+#include <string.h>
+
#ifdef HAVE_UNISTD_H
+# if defined __MINGW32__ && defined HAVE_GETLOGIN
+# define _POSIX 1
+# endif
#include <unistd.h>
#endif
+#ifdef HAVE_PWD_H
+#include <pwd.h>
+#endif
+
+/* Windows32 version */
+#if defined __MINGW32__ && !defined HAVE_GETLOGIN
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <lmcons.h> /* for UNLEN */
+
+static char *
+w32_getlogin (void)
+{
+ static char name [UNLEN + 1];
+ DWORD namelen = sizeof (name);
+
+ GetUserName (name, &namelen);
+ return (name[0] == 0 ? NULL : name);
+}
+
+#undef getlogin
+#define getlogin w32_getlogin
+#define HAVE_GETLOGIN 1
+
+#endif
/* GETLOG (LOGIN), g77 intrinsic for retrieving the login name for the
process.
CHARACTER(len=*), INTENT(OUT) :: LOGIN */
-#ifdef HAVE_GETLOGIN
void PREFIX(getlog) (char *, gfc_charlen_type);
export_proto_np(PREFIX(getlog));
-void
+void
PREFIX(getlog) (char * login, gfc_charlen_type login_len)
{
int p_len;
memset (login, ' ', login_len); /* Blank the string. */
- p = getlogin ();
+#if defined(HAVE_POSIX_GETPWUID_R) && defined(HAVE_GETEUID)
+ struct passwd pwd;
+ struct passwd *result;
+ char *buf;
+ int err;
+ /* To be pedantic, buflen should be determined by
+ sysconf(_SC_GETPW_R_SIZE_MAX), which is 1024 on some tested
+ targets; we do something simple in case the target doesn't
+ support sysconf. */
+ static const size_t buflen = 1024;
+ buf = get_mem (buflen);
+ err = getpwuid_r (geteuid (), &pwd, buf, buflen, &result);
+ if (err != 0 || result == NULL)
+ goto cleanup;
+ p = pwd.pw_name;
+#elif defined(HAVE_GETPWUID) && defined(HAVE_GETEUID)
+ {
+ struct passwd *pw = getpwuid (geteuid ());
+ if (pw)
+ p = pw->pw_name;
+ else
+ return;
+ }
+#elif HAVE_GETLOGIN
+ p = getlogin();
+# else
+ return;
+#endif
+
if (p == NULL)
- return;
+ goto cleanup;
p_len = strlen (p);
if (login_len < p_len)
- memcpy (login, p, login_len);
- else
- memcpy (login, p, p_len);
-}
+ p_len = login_len;
+ memcpy (login, p, p_len);
+
+ cleanup:
+#if defined (HAVE_POSIX_GETPWUID_R) && defined(HAVE_GETEUID)
+ free (buf);
+#else
+ ;
#endif
+}
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