68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/**************************************************************************/
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/* */
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/* OCaml */
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/* */
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/* Xavier Leroy, 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. */
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/* */
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/* All rights reserved. This file is distributed under the terms of */
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/* the GNU Lesser General Public License version 2.1, with the */
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/* special exception on linking described in the file LICENSE. */
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/* */
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/**************************************************************************/
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#include <caml/mlvalues.h>
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#include <caml/alloc.h>
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#include <caml/memory.h>
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#include <caml/signals.h>
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#define CAML_INTERNALS
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#include <caml/osdeps.h>
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#include "unixsupport.h"
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#ifdef HAS_UNISTD
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# include <unistd.h>
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#else
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# ifndef _WIN32
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# include <sys/file.h>
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# endif
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# ifndef R_OK
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# define R_OK 4/* test for read permission */
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# define W_OK 2/* test for write permission */
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# define X_OK 1/* test for execute (search) permission */
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# define F_OK 0/* test for presence of file */
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# endif
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#endif
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static int access_permission_table[] = {
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R_OK,
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W_OK,
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#ifdef _WIN32
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/* Since there is no concept of execute permission on Windows,
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we fall b+ack to the read permission */
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R_OK,
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#else
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X_OK,
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#endif
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F_OK
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};
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CAMLprim value unix_access(value path, value perms)
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{
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CAMLparam2(path, perms);
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char_os * p;
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int ret, cv_flags;
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caml_unix_check_path(path, "access");
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cv_flags = caml_convert_flag_list(perms, access_permission_table);
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p = caml_stat_strdup_to_os(String_val(path));
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caml_enter_blocking_section();
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ret = access_os(p, cv_flags);
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caml_leave_blocking_section();
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caml_stat_free(p);
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if (ret == -1)
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uerror("access", path);
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CAMLreturn(Val_unit);
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}
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