66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/***********************************************************************/
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/* */
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/* Objective Caml */
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/* */
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/* Xavier Leroy and Pascal Cuoq, projet Cristal, INRIA Rocquencourt */
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/* */
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/* Copyright 1996 Institut National de Recherche en Informatique et */
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/* en Automatique. All rights reserved. This file is distributed */
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/* under the terms of the GNU Library General Public License. */
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/* */
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/***********************************************************************/
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/* $Id$ */
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#include <mlvalues.h>
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#include <alloc.h>
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#include "unixsupport.h"
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#include <fcntl.h>
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static int open_access_flags[8] = {
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GENERIC_READ, GENERIC_WRITE, GENERIC_READ|GENERIC_WRITE, 0, 0, 0, 0, 0,
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};
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static int open_create_flags[8] = {
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0, 0, 0, 0, 0, O_CREAT, O_TRUNC, O_EXCL
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};
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value unix_open(value path, value flags, value perm) /* ML */
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{
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int fileaccess, createflags, fileattrib, filecreate;
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SECURITY_ATTRIBUTES attr;
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HANDLE h;
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fileaccess = convert_flag_list(flags, open_access_flags);
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createflags = convert_flag_list(flags, open_create_flags);
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if ((createflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
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filecreate = CREATE_NEW;
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else if ((createflags & (O_CREAT | O_TRUNC)) == (O_CREAT | O_TRUNC))
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filecreate = CREATE_ALWAYS;
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else if (createflags & O_TRUNC)
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filecreate = TRUNCATE_EXISTING;
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else if (createflags & O_CREAT)
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filecreate = OPEN_ALWAYS;
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else
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filecreate = OPEN_EXISTING;
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if ((createflags & O_CREAT) && (Int_val(perm) & 0200) == 0)
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fileattrib = FILE_ATTRIBUTE_READONLY;
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else
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fileattrib = FILE_ATTRIBUTE_NORMAL;
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attr.nLength = sizeof(attr);
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attr.lpSecurityDescriptor = NULL;
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attr.bInheritHandle = TRUE;
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h = CreateFile(String_val(path), fileaccess,
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FILE_SHARE_READ | FILE_SHARE_WRITE, &attr,
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filecreate, fileattrib, NULL);
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if (h == INVALID_HANDLE_VALUE) {
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_dosmaperr(GetLastError());
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uerror("open", path);
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}
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return win_alloc_handle(h);
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}
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