92 lines
3.3 KiB
C
92 lines
3.3 KiB
C
/**************************************************************************/
|
|
/* */
|
|
/* OCaml */
|
|
/* */
|
|
/* Xavier Leroy and Pascal Cuoq, projet Cristal, INRIA Rocquencourt */
|
|
/* */
|
|
/* Copyright 1996 Institut National de Recherche en Informatique et */
|
|
/* en Automatique. */
|
|
/* */
|
|
/* All rights reserved. This file is distributed under the terms of */
|
|
/* the GNU Lesser General Public License version 2.1, with the */
|
|
/* special exception on linking described in the file LICENSE. */
|
|
/* */
|
|
/**************************************************************************/
|
|
|
|
#define CAML_INTERNALS
|
|
|
|
#include <caml/mlvalues.h>
|
|
#include <caml/alloc.h>
|
|
#include <caml/osdeps.h>
|
|
#include <caml/memory.h>
|
|
#include "unixsupport.h"
|
|
#include <fcntl.h>
|
|
|
|
static int open_access_flags[15] = {
|
|
GENERIC_READ, GENERIC_WRITE, GENERIC_READ|GENERIC_WRITE,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
|
|
};
|
|
|
|
static int open_create_flags[15] = {
|
|
0, 0, 0, 0, 0, O_CREAT, O_TRUNC, O_EXCL, 0, 0, 0, 0, 0, 0, 0
|
|
};
|
|
|
|
static int open_share_flags[15] = {
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, FILE_SHARE_DELETE, 0, 0
|
|
};
|
|
|
|
enum { CLOEXEC = 1, KEEPEXEC = 2 };
|
|
|
|
static int open_cloexec_flags[15] = {
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, CLOEXEC, KEEPEXEC
|
|
};
|
|
|
|
CAMLprim value unix_open(value path, value flags, value perm)
|
|
{
|
|
int fileaccess, createflags, fileattrib, filecreate, sharemode, cloexec;
|
|
SECURITY_ATTRIBUTES attr;
|
|
HANDLE h;
|
|
wchar_t * wpath;
|
|
|
|
caml_unix_check_path(path, "open");
|
|
fileaccess = caml_convert_flag_list(flags, open_access_flags);
|
|
sharemode = FILE_SHARE_READ | FILE_SHARE_WRITE
|
|
| caml_convert_flag_list(flags, open_share_flags);
|
|
|
|
createflags = caml_convert_flag_list(flags, open_create_flags);
|
|
if ((createflags & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL))
|
|
filecreate = CREATE_NEW;
|
|
else if ((createflags & (O_CREAT | O_TRUNC)) == (O_CREAT | O_TRUNC))
|
|
filecreate = CREATE_ALWAYS;
|
|
else if (createflags & O_TRUNC)
|
|
filecreate = TRUNCATE_EXISTING;
|
|
else if (createflags & O_CREAT)
|
|
filecreate = OPEN_ALWAYS;
|
|
else
|
|
filecreate = OPEN_EXISTING;
|
|
|
|
if ((createflags & O_CREAT) && (Int_val(perm) & 0200) == 0)
|
|
fileattrib = FILE_ATTRIBUTE_READONLY;
|
|
else
|
|
fileattrib = FILE_ATTRIBUTE_NORMAL;
|
|
|
|
cloexec = caml_convert_flag_list(flags, open_cloexec_flags);
|
|
attr.nLength = sizeof(attr);
|
|
attr.lpSecurityDescriptor = NULL;
|
|
attr.bInheritHandle =
|
|
cloexec & CLOEXEC ? FALSE
|
|
: cloexec & KEEPEXEC ? TRUE
|
|
: !unix_cloexec_default;
|
|
|
|
wpath = caml_stat_strdup_to_utf16(String_val(path));
|
|
h = CreateFile(wpath, fileaccess,
|
|
sharemode, &attr,
|
|
filecreate, fileattrib, NULL);
|
|
caml_stat_free(wpath);
|
|
if (h == INVALID_HANDLE_VALUE) {
|
|
win32_maperr(GetLastError());
|
|
uerror("open", path);
|
|
}
|
|
return win_alloc_handle(h);
|
|
}
|