re PR libfortran/23803 ([mingw32] getlog malfunction)

PR libfortran/23803
	* intrinsics/getXid.c: Add getpid wrapper for MinGW.
	* intrinsics/getlog.c: Add getlogin wrapper for MinGW.
	* intrinsics/hostnm.c: Add gethostname wrapper for MinGW.

Co-Authored-By: Danny Smith <dannysmith@users.sourceforge.net>

From-SVN: r104624

libgfortran/ChangeLog

@@ -1,3 +1,11 @@
+2005-09-25  Francois-Xavier Coudert  <coudert@clipper.ens.fr>
+	    Danny Smith  <dannysmith@users.sourceforge.net>
+
+	PR libfortran/23803
+	* intrinsics/getXid.c: Add getpid wrapper for MinGW.
+	* intrinsics/getlog.c: Add getlogin wrapper for MinGW.
+	* intrinsics/hostnm.c: Add gethostname wrapper for MinGW.
+
 2005-09-24  Francois-Xavier Coudert  <coudert@clipper.ens.fr>
 
 	PR libfortran/23802

libgfortran/intrinsics/getXid.c

@@ -38,6 +38,11 @@ Boston, MA 02110-1301, USA.  */
 
 #include "libgfortran.h"
 
+#ifdef __MINGW32__
+#define HAVE_GETPID
+#include <process.h>
+#endif
+
 #ifdef HAVE_GETGID
 extern GFC_INTEGER_4 PREFIX(getgid) (void);
 export_proto_np(PREFIX(getgid));

libgfortran/intrinsics/getlog.c

@@ -39,6 +39,29 @@ Boston, MA 02110-1301, USA.  */
 #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  */

libgfortran/intrinsics/hostnm.c

@@ -38,7 +38,47 @@ Boston, MA 02110-1301, USA.  */
 #include <unistd.h> 
 #endif
 
-#include "../io/io.h"
+
+/* Windows32 version */
+#if defined __MINGW32__ && !defined  HAVE_GETHOSTNAME
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <errno.h>
+
+static int
+w32_gethostname (char *name, size_t len)
+{
+  /* We could try the WinSock API gethostname, but that will
+     fail if WSAStartup function has has not been called.  We don't
+    really need a name that will be understood by socket API, so avoid
+    unnecessary dependence on WinSock libraries by using
+    GetComputerName instead.  */
+
+  /* On Win9x GetComputerName fails if the input size is less
+     than MAX_COMPUTERNAME_LENGTH + 1.  */
+  char buffer[MAX_COMPUTERNAME_LENGTH + 1];
+  DWORD size =  sizeof (buffer);
+
+  if (!GetComputerName (buffer, &size))
+    return -1;
+
+  if ((size = strlen (buffer) + 1)  > len)
+    {
+      errno = EINVAL;
+      /* Truncate as per POSIX spec.  We do not NUL-terminate. */
+      size = len;
+    }
+  memcpy (name, buffer, (size_t) size);
+
+  return 0;
+}
+
+#undef gethostname
+#define gethostname w32_gethostname
+#define  HAVE_GETHOSTNAME 1
+
+#endif
+
 
 /* SUBROUTINE HOSTNM(NAME, STATUS)
    CHARACTER(len=*), INTENT(OUT) :: NAME