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 #ifdef KR_headers
  49 void g_char ();
  50
  51 integer G77_access_0 (name, mode, Lname, Lmode)
  52      char *name, *mode;
  53      ftnlen Lname, Lmode;
  54 #else
  55 void g_char(const char *a, ftnlen alen, char *b);
  56
  57 integer G77_access_0 (const char *name, const char *mode, ftnlen Lname, ftnlen Lmode)
  58 #endif
  59 {
  60   char *buff;
  61   char *bp, *blast;
  62   int amode, i;
  63
  64   buff = malloc (Lname+1);
  65   if (!buff) return -1;
  66   g_char (name, Lname, buff);
  67   amode = 0;
  68   for (i=0;i<Lmode;i++) {
  69     switch (mode[i]) {
  70     case 'r': amode |= R_OK; break;
  71     case 'w': amode |= W_OK; break;
  72     case 'x': amode |= X_OK; break;
  73     case ' ': amode |= F_OK; break; /* as per Sun, at least */
  74     default: return EINVAL;
  75     }
  76   }
  77   i = access (buff, amode);
  78   free (buff);
  79   return i;
  80 }