libf2c/libU77/access_.c

   1 /* Copyright (C) 1995, 1997 Free Software Foundation, Inc.
   2 This file is part of GNU Fortran libU77 library.
   3
   4 This library is free software; you can redistribute it and/or modify it
   5 under the terms of the GNU Library General Public License as published
   6 by the Free Software Foundation; either version 2 of the License, or
   7 (at your option) any later version.
   8
   9 GNU Fortran is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 Library General Public License for more details.
  13
  14 You should have received a copy of the GNU Library General Public
  15 License along with GNU Fortran; see the file COPYING.LIB.  If
  16 not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17 Boston, MA 02111-1307, USA.  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 #include "config.h"
  21 #endif
  22 #if HAVE_UNISTD_H
  23 #  include <unistd.h>
  24 #endif
  25 #if HAVE_STDLIB_H
  26 #  include <stdlib.h>
  27 #else
  28 #  include <stdio.h>
  29 #endif
  30
  31 #include <errno.h>
  32 #include <limits.h>
  33 #include "f2c.h"
  34
  35 #ifndef R_OK                    /* for SVR1-2 */
  36 #  define R_OK 4
  37 #endif
  38 #ifndef W_OK
  39 #  define W_OK 2
  40 #endif
  41 #ifndef X_OK
  42 #  define X_OK 1
  43 #endif
  44 #ifndef F_OK
  45 #  define F_OK 0
  46 #endif
  47
  48 void g_char (const char *a, ftnlen alen, char *b);
  49
  50 integer
  51 G77_access_0 (const char *name, const char *mode, ftnlen Lname, ftnlen Lmode)
  52 {
  53   char *buff;
  54   int amode, i;
  55
  56   buff = malloc (Lname + 1);
  57   if (!buff)
  58     return -1;
  59   g_char (name, Lname, buff);
  60   amode = 0;
  61   for (i = 0; i < Lmode; i++)
  62     {
  63       switch (mode[i])
  64         {
  65         case 'r':
  66           amode |= R_OK;
  67           break;
  68         case 'w':
  69           amode |= W_OK;
  70           break;
  71         case 'x':
  72           amode |= X_OK;
  73           break;
  74         case ' ':
  75           amode |= F_OK;
  76           break;                /* as per Sun, at least */
  77         default:
  78           return EINVAL;
  79         }
  80     }
  81   i = access (buff, amode);
  82   free (buff);
  83   return i;
  84 }