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      1 /* Copyright (C) 2018-2024 Free Software Foundation, Inc.
      2    Contributed by Jakub Jelinek <jakub (at) redhat.com>.
      3 
      4    This file is part of the GNU Offloading and Multi Processing Library
      5    (libgomp).
      6 
      7    Libgomp is free software; you can redistribute it and/or modify it
      8    under the terms of the GNU General Public License as published by
      9    the Free Software Foundation; either version 3, or (at your option)
     10    any later version.
     11 
     12    Libgomp is distributed in the hope that it will be useful, but WITHOUT ANY
     13    WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
     14    FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
     15    more details.
     16 
     17    Under Section 7 of GPL version 3, you are granted additional
     18    permissions described in the GCC Runtime Library Exception, version
     19    3.1, as published by the Free Software Foundation.
     20 
     21    You should have received a copy of the GNU General Public License and
     22    a copy of the GCC Runtime Library Exception along with this program;
     23    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
     24    <http://www.gnu.org/licenses/>.  */
     25 
     26 #include "libgomp.h"
     27 #include <string.h>
     28 #include <stdio.h>
     29 #include <stdlib.h>
     30 #ifdef HAVE_UNISTD_H
     31 #include <unistd.h>
     32 #endif
     33 #ifdef HAVE_INTTYPES_H
     34 # include <inttypes.h>  /* For PRIx64.  */
     35 #endif
     36 #define WIN32_LEAN_AND_MEAN
     37 #include <windows.h>
     38 #include <errno.h>
     39 
     40 static int
     41 gomp_gethostname (char *name, size_t len)
     42 {
     43   /* On Win9x GetComputerName fails if the input size is less
     44      than MAX_COMPUTERNAME_LENGTH + 1.  */
     45   char buffer[MAX_COMPUTERNAME_LENGTH + 1];
     46   DWORD size = sizeof (buffer);
     47   int ret = 0;
     48 
     49   if (!GetComputerName (buffer, &size))
     50     return -1;
     51 
     52   if ((size = strlen (buffer) + 1) > len)
     53     {
     54       errno = EINVAL;
     55       /* Truncate as per POSIX spec.  We do not NUL-terminate. */
     56       size = len;
     57       ret = -1;
     58     }
     59   memcpy (name, buffer, (size_t) size);
     60 
     61   return ret;
     62 }
     63 
     64 #undef gethostname
     65 #define gethostname gomp_gethostname
     66 #define  HAVE_GETHOSTNAME 1
     67 
     68 #include "../../affinity-fmt.c"
     69