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/**************************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy, 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. */
/* */
/**************************************************************************/
#include <caml/mlvalues.h>
#include <caml/alloc.h>
#include <caml/memory.h>
#include <caml/misc.h>
#include <caml/signals.h>
#include "unixsupport.h"
#include <string.h>
#ifdef HAS_UNISTD
#include <unistd.h>
#endif
#include <fcntl.h>
#ifndef O_NONBLOCK
#define O_NONBLOCK O_NDELAY
#endif
#ifndef O_DSYNC
#define O_DSYNC 0
#endif
#ifndef O_SYNC
#define O_SYNC 0
#endif
#ifndef O_RSYNC
#define O_RSYNC 0
#endif
static int open_flag_table[15] = {
O_RDONLY, O_WRONLY, O_RDWR, O_NONBLOCK, O_APPEND, O_CREAT, O_TRUNC, O_EXCL,
O_NOCTTY, O_DSYNC, O_SYNC, O_RSYNC,
0, /* O_SHARE_DELETE, Windows-only */
0, /* O_CLOEXEC, treated specially */
0 /* O_KEEPEXEC, treated specially */
};
enum { CLOEXEC = 1, KEEPEXEC = 2 };
static int open_cloexec_table[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)
{
CAMLparam3(path, flags, perm);
int fd, cv_flags, clo_flags, cloexec;
char * p;
caml_unix_check_path(path, "open");
cv_flags = caml_convert_flag_list(flags, open_flag_table);
clo_flags = caml_convert_flag_list(flags, open_cloexec_table);
if (clo_flags & CLOEXEC)
cloexec = 1;
else if (clo_flags & KEEPEXEC)
cloexec = 0;
else
cloexec = unix_cloexec_default;
#if defined(O_CLOEXEC)
if (cloexec) cv_flags |= O_CLOEXEC;
#endif
p = caml_strdup(String_val(path));
/* open on a named FIFO can block (PR#1533) */
caml_enter_blocking_section();
fd = open(p, cv_flags, Int_val(perm));
caml_leave_blocking_section();
caml_stat_free(p);
if (fd == -1) uerror("open", path);
#if !defined(O_CLOEXEC)
if (cloexec) unix_set_cloexec(fd, "open", path);
#endif
CAMLreturn (Val_int(fd));
}
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