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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/callback.h>
#include <caml/memory.h>
#include <caml/fail.h>
#include "unixsupport.h"
#include "cst2constr.h"
#include <errno.h>
#ifdef HAS_UNISTD
#include <unistd.h>
#endif
#include <fcntl.h>
#ifndef E2BIG
#define E2BIG (-1)
#endif
#ifndef EACCES
#define EACCES (-1)
#endif
#ifndef EAGAIN
#define EAGAIN (-1)
#endif
#ifndef EBADF
#define EBADF (-1)
#endif
#ifndef EBUSY
#define EBUSY (-1)
#endif
#ifndef ECHILD
#define ECHILD (-1)
#endif
#ifndef EDEADLK
#define EDEADLK (-1)
#endif
#ifndef EDOM
#define EDOM (-1)
#endif
#ifndef EEXIST
#define EEXIST (-1)
#endif
#ifndef EFAULT
#define EFAULT (-1)
#endif
#ifndef EFBIG
#define EFBIG (-1)
#endif
#ifndef EINTR
#define EINTR (-1)
#endif
#ifndef EINVAL
#define EINVAL (-1)
#endif
#ifndef EIO
#define EIO (-1)
#endif
#ifndef EISDIR
#define EISDIR (-1)
#endif
#ifndef EMFILE
#define EMFILE (-1)
#endif
#ifndef EMLINK
#define EMLINK (-1)
#endif
#ifndef ENAMETOOLONG
#define ENAMETOOLONG (-1)
#endif
#ifndef ENFILE
#define ENFILE (-1)
#endif
#ifndef ENODEV
#define ENODEV (-1)
#endif
#ifndef ENOENT
#define ENOENT (-1)
#endif
#ifndef ENOEXEC
#define ENOEXEC (-1)
#endif
#ifndef ENOLCK
#define ENOLCK (-1)
#endif
#ifndef ENOMEM
#define ENOMEM (-1)
#endif
#ifndef ENOSPC
#define ENOSPC (-1)
#endif
#ifndef ENOSYS
#define ENOSYS (-1)
#endif
#ifndef ENOTDIR
#define ENOTDIR (-1)
#endif
#ifndef ENOTEMPTY
#define ENOTEMPTY (-1)
#endif
#ifndef ENOTTY
#define ENOTTY (-1)
#endif
#ifndef ENXIO
#define ENXIO (-1)
#endif
#ifndef EPERM
#define EPERM (-1)
#endif
#ifndef EPIPE
#define EPIPE (-1)
#endif
#ifndef ERANGE
#define ERANGE (-1)
#endif
#ifndef EROFS
#define EROFS (-1)
#endif
#ifndef ESPIPE
#define ESPIPE (-1)
#endif
#ifndef ESRCH
#define ESRCH (-1)
#endif
#ifndef EXDEV
#define EXDEV (-1)
#endif
#ifndef EWOULDBLOCK
#define EWOULDBLOCK (-1)
#endif
#ifndef EINPROGRESS
#define EINPROGRESS (-1)
#endif
#ifndef EALREADY
#define EALREADY (-1)
#endif
#ifndef ENOTSOCK
#define ENOTSOCK (-1)
#endif
#ifndef EDESTADDRREQ
#define EDESTADDRREQ (-1)
#endif
#ifndef EMSGSIZE
#define EMSGSIZE (-1)
#endif
#ifndef EPROTOTYPE
#define EPROTOTYPE (-1)
#endif
#ifndef ENOPROTOOPT
#define ENOPROTOOPT (-1)
#endif
#ifndef EPROTONOSUPPORT
#define EPROTONOSUPPORT (-1)
#endif
#ifndef ESOCKTNOSUPPORT
#define ESOCKTNOSUPPORT (-1)
#endif
#ifndef EOPNOTSUPP
# ifdef ENOTSUP
# define EOPNOTSUPP ENOTSUP
# else
# define EOPNOTSUPP (-1)
# endif
#endif
#ifndef EPFNOSUPPORT
#define EPFNOSUPPORT (-1)
#endif
#ifndef EAFNOSUPPORT
#define EAFNOSUPPORT (-1)
#endif
#ifndef EADDRINUSE
#define EADDRINUSE (-1)
#endif
#ifndef EADDRNOTAVAIL
#define EADDRNOTAVAIL (-1)
#endif
#ifndef ENETDOWN
#define ENETDOWN (-1)
#endif
#ifndef ENETUNREACH
#define ENETUNREACH (-1)
#endif
#ifndef ENETRESET
#define ENETRESET (-1)
#endif
#ifndef ECONNABORTED
#define ECONNABORTED (-1)
#endif
#ifndef ECONNRESET
#define ECONNRESET (-1)
#endif
#ifndef ENOBUFS
#define ENOBUFS (-1)
#endif
#ifndef EISCONN
#define EISCONN (-1)
#endif
#ifndef ENOTCONN
#define ENOTCONN (-1)
#endif
#ifndef ESHUTDOWN
#define ESHUTDOWN (-1)
#endif
#ifndef ETOOMANYREFS
#define ETOOMANYREFS (-1)
#endif
#ifndef ETIMEDOUT
#define ETIMEDOUT (-1)
#endif
#ifndef ECONNREFUSED
#define ECONNREFUSED (-1)
#endif
#ifndef EHOSTDOWN
#define EHOSTDOWN (-1)
#endif
#ifndef EHOSTUNREACH
#define EHOSTUNREACH (-1)
#endif
#ifndef ENOTEMPTY
#define ENOTEMPTY (-1)
#endif
#ifndef ELOOP
#define ELOOP (-1)
#endif
#ifndef EOVERFLOW
#define EOVERFLOW (-1)
#endif
static int error_table[] = {
E2BIG, EACCES, EAGAIN, EBADF, EBUSY, ECHILD, EDEADLK, EDOM,
EEXIST, EFAULT, EFBIG, EINTR, EINVAL, EIO, EISDIR, EMFILE, EMLINK,
ENAMETOOLONG, ENFILE, ENODEV, ENOENT, ENOEXEC, ENOLCK, ENOMEM, ENOSPC,
ENOSYS, ENOTDIR, ENOTEMPTY, ENOTTY, ENXIO, EPERM, EPIPE, ERANGE,
EROFS, ESPIPE, ESRCH, EXDEV, EWOULDBLOCK, EINPROGRESS, EALREADY,
ENOTSOCK, EDESTADDRREQ, EMSGSIZE, EPROTOTYPE, ENOPROTOOPT,
EPROTONOSUPPORT, ESOCKTNOSUPPORT, EOPNOTSUPP, EPFNOSUPPORT,
EAFNOSUPPORT, EADDRINUSE, EADDRNOTAVAIL, ENETDOWN, ENETUNREACH,
ENETRESET, ECONNABORTED, ECONNRESET, ENOBUFS, EISCONN, ENOTCONN,
ESHUTDOWN, ETOOMANYREFS, ETIMEDOUT, ECONNREFUSED, EHOSTDOWN,
EHOSTUNREACH, ELOOP, EOVERFLOW /*, EUNKNOWNERR */
};
value caml_unix_error_of_code (int errcode)
{
int errconstr;
value err;
#if defined(ENOTSUP) && (EOPNOTSUPP != ENOTSUP)
if (errcode == ENOTSUP)
errcode = EOPNOTSUPP;
#endif
errconstr =
caml_unix_cst_to_constr(errcode, error_table,
sizeof(error_table)/sizeof(int), -1);
if (errconstr == Val_int(-1)) {
err = caml_alloc_small(1, 0);
Field(err, 0) = Val_int(errcode);
} else {
err = errconstr;
}
return err;
}
int caml_unix_code_of_unix_error (value error)
{
if (Is_block(error)) {
return Int_val(Field(error, 0));
} else {
return error_table[Int_val(error)];
}
}
static const value * _Atomic caml_unix_error_exn = NULL;
void caml_unix_error(int errcode, const char *cmdname, value cmdarg)
{
CAMLparam0();
CAMLlocal3(name, err, arg);
value res;
const value * exn;
exn = atomic_load_explicit(&caml_unix_error_exn, memory_order_acquire);
if (exn == NULL) {
exn = caml_named_value("Unix.Unix_error");
if (exn == NULL)
caml_invalid_argument("Exception Unix.Unix_error not initialized,"
" please link unix.cma");
atomic_store(&caml_unix_error_exn, exn);
}
arg = cmdarg == Nothing ? caml_copy_string("") : cmdarg;
name = caml_copy_string(cmdname);
err = caml_unix_error_of_code (errcode);
res = caml_alloc_small(4, 0);
Field(res, 0) = *exn;
Field(res, 1) = err;
Field(res, 2) = name;
Field(res, 3) = arg;
caml_raise(res);
CAMLnoreturn;
}
void caml_uerror(const char *cmdname, value cmdarg)
{
caml_unix_error(errno, cmdname, cmdarg);
}
void caml_unix_check_path(value path, const char * cmdname)
{
if (! caml_string_is_c_safe(path)) caml_unix_error(ENOENT, cmdname, path);
}
int caml_unix_cloexec_default = 0;
int caml_unix_cloexec_p(value cloexec)
{
if (Is_some(cloexec))
return Bool_val(Some_val(cloexec));
else
return caml_unix_cloexec_default;
}
void caml_unix_set_cloexec(int fd, char *cmdname, value cmdarg)
{
int flags = fcntl(fd, F_GETFD, 0);
if (flags == -1 ||
fcntl(fd, F_SETFD, flags | FD_CLOEXEC) == -1)
caml_uerror(cmdname, cmdarg);
}
void caml_unix_clear_cloexec(int fd, char *cmdname, value cmdarg)
{
int flags = fcntl(fd, F_GETFD, 0);
if (flags == -1 ||
fcntl(fd, F_SETFD, flags & ~FD_CLOEXEC) == -1)
caml_uerror(cmdname, cmdarg);
}
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