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ocaml/otherlibs/win32unix/unixsupport.c

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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 Library General Public License, with */
/* the special exception on linking described in file ../../LICENSE. */
/* */
/***********************************************************************/
/* $Id$ */
#include <stddef.h>
#include <mlvalues.h>
#include <callback.h>
#include <alloc.h>
#include <memory.h>
#include <fail.h>
#include <custom.h>
#include "unixsupport.h"
#include "cst2constr.h"
#include <errno.h>
/* Heap-allocation of Windows file handles */
static int win_handle_compare(value v1, value v2)
{
HANDLE h1 = Handle_val(v1);
HANDLE h2 = Handle_val(v2);
return h1 == h2 ? 0 : h1 < h2 ? -1 : 1;
}
static intnat win_handle_hash(value v)
{
return (intnat) Handle_val(v);
}
static struct custom_operations win_handle_ops = {
"_handle",
custom_finalize_default,
win_handle_compare,
win_handle_hash,
custom_serialize_default,
custom_deserialize_default,
custom_compare_ext_default
};
value win_alloc_handle(HANDLE h)
{
value res = alloc_custom(&win_handle_ops, sizeof(struct filedescr), 0, 1);
Handle_val(res) = h;
Descr_kind_val(res) = KIND_HANDLE;
CRT_fd_val(res) = NO_CRT_FD;
Flags_fd_val(res) = FLAGS_FD_IS_BLOCKING;
return res;
}
value win_alloc_socket(SOCKET s)
{
value res = alloc_custom(&win_handle_ops, sizeof(struct filedescr), 0, 1);
Socket_val(res) = s;
Descr_kind_val(res) = KIND_SOCKET;
CRT_fd_val(res) = NO_CRT_FD;
Flags_fd_val(res) = FLAGS_FD_IS_BLOCKING;
return res;
}
#if 0
/* PR#4750: this function is no longer used */
value win_alloc_handle_or_socket(HANDLE h)
{
value res = win_alloc_handle(h);
int opt;
int optlen = sizeof(opt);
if (getsockopt((SOCKET) h, SOL_SOCKET, SO_TYPE, (char *)&opt, &optlen) == 0)
Descr_kind_val(res) = KIND_SOCKET;
return res;
}
#endif
/* Mapping of Windows error codes to POSIX error codes */
struct error_entry { DWORD win_code; int range; int posix_code; };
static struct error_entry win_error_table[] = {
{ ERROR_INVALID_FUNCTION, 0, EINVAL},
{ ERROR_FILE_NOT_FOUND, 0, ENOENT},
{ ERROR_PATH_NOT_FOUND, 0, ENOENT},
{ ERROR_TOO_MANY_OPEN_FILES, 0, EMFILE},
{ ERROR_ACCESS_DENIED, 0, EACCES},
{ ERROR_INVALID_HANDLE, 0, EBADF},
{ ERROR_ARENA_TRASHED, 0, ENOMEM},
{ ERROR_NOT_ENOUGH_MEMORY, 0, ENOMEM},
{ ERROR_INVALID_BLOCK, 0, ENOMEM},
{ ERROR_BAD_ENVIRONMENT, 0, E2BIG},
{ ERROR_BAD_FORMAT, 0, ENOEXEC},
{ ERROR_INVALID_ACCESS, 0, EINVAL},
{ ERROR_INVALID_DATA, 0, EINVAL},
{ ERROR_INVALID_DRIVE, 0, ENOENT},
{ ERROR_CURRENT_DIRECTORY, 0, EACCES},
{ ERROR_NOT_SAME_DEVICE, 0, EXDEV},
{ ERROR_NO_MORE_FILES, 0, ENOENT},
{ ERROR_LOCK_VIOLATION, 0, EACCES},
{ ERROR_BAD_NETPATH, 0, ENOENT},
{ ERROR_NETWORK_ACCESS_DENIED, 0, EACCES},
{ ERROR_BAD_NET_NAME, 0, ENOENT},
{ ERROR_FILE_EXISTS, 0, EEXIST},
{ ERROR_CANNOT_MAKE, 0, EACCES},
{ ERROR_FAIL_I24, 0, EACCES},
{ ERROR_INVALID_PARAMETER, 0, EINVAL},
{ ERROR_NO_PROC_SLOTS, 0, EAGAIN},
{ ERROR_DRIVE_LOCKED, 0, EACCES},
{ ERROR_BROKEN_PIPE, 0, EPIPE},
{ ERROR_NO_DATA, 0, EPIPE},
{ ERROR_DISK_FULL, 0, ENOSPC},
{ ERROR_INVALID_TARGET_HANDLE, 0, EBADF},
{ ERROR_INVALID_HANDLE, 0, EINVAL},
{ ERROR_WAIT_NO_CHILDREN, 0, ECHILD},
{ ERROR_CHILD_NOT_COMPLETE, 0, ECHILD},
{ ERROR_DIRECT_ACCESS_HANDLE, 0, EBADF},
{ ERROR_NEGATIVE_SEEK, 0, EINVAL},
{ ERROR_SEEK_ON_DEVICE, 0, EACCES},
{ ERROR_DIR_NOT_EMPTY, 0, ENOTEMPTY},
{ ERROR_NOT_LOCKED, 0, EACCES},
{ ERROR_BAD_PATHNAME, 0, ENOENT},
{ ERROR_MAX_THRDS_REACHED, 0, EAGAIN},
{ ERROR_LOCK_FAILED, 0, EACCES},
{ ERROR_ALREADY_EXISTS, 0, EEXIST},
{ ERROR_FILENAME_EXCED_RANGE, 0, ENOENT},
{ ERROR_NESTING_NOT_ALLOWED, 0, EAGAIN},
{ ERROR_NOT_ENOUGH_QUOTA, 0, ENOMEM},
{ ERROR_INVALID_STARTING_CODESEG,
ERROR_INFLOOP_IN_RELOC_CHAIN - ERROR_INVALID_STARTING_CODESEG,
ENOEXEC },
{ ERROR_WRITE_PROTECT,
ERROR_SHARING_BUFFER_EXCEEDED - ERROR_WRITE_PROTECT,
EACCES },
{ WSAEINVAL, 0, EINVAL },
{ WSAEACCES, 0, EACCES },
{ WSAEBADF, 0, EBADF },
{ WSAEFAULT, 0, EFAULT },
{ WSAEINTR, 0, EINTR },
{ WSAEINVAL, 0, EINVAL },
{ WSAEMFILE, 0, EMFILE },
#ifdef WSANAMETOOLONG
{ WSANAMETOOLONG, 0, ENAMETOOLONG },
#endif
#ifdef WSAENFILE
{ WSAENFILE, 0, ENFILE },
#endif
{ WSAENOTEMPTY, 0, ENOTEMPTY },
{ 0, -1, 0 }
};
void win32_maperr(DWORD errcode)
{
int i;
for (i = 0; win_error_table[i].range >= 0; i++) {
if (errcode >= win_error_table[i].win_code &&
errcode <= win_error_table[i].win_code + win_error_table[i].range) {
errno = win_error_table[i].posix_code;
return;
}
}
/* Not found: save original error code, negated so that we can
recognize it in unix_error_message */
errno = -errcode;
}
/* Windows socket errors */
#define EWOULDBLOCK -WSAEWOULDBLOCK
#define EINPROGRESS -WSAEINPROGRESS
#define EALREADY -WSAEALREADY
#define ENOTSOCK -WSAENOTSOCK
#define EDESTADDRREQ -WSAEDESTADDRREQ
#define EMSGSIZE -WSAEMSGSIZE
#define EPROTOTYPE -WSAEPROTOTYPE
#define ENOPROTOOPT -WSAENOPROTOOPT
#define EPROTONOSUPPORT -WSAEPROTONOSUPPORT
#define ESOCKTNOSUPPORT -WSAESOCKTNOSUPPORT
#define EOPNOTSUPP -WSAEOPNOTSUPP
#define EPFNOSUPPORT -WSAEPFNOSUPPORT
#define EAFNOSUPPORT -WSAEAFNOSUPPORT
#define EADDRINUSE -WSAEADDRINUSE
#define EADDRNOTAVAIL -WSAEADDRNOTAVAIL
#define ENETDOWN -WSAENETDOWN
#define ENETUNREACH -WSAENETUNREACH
#define ENETRESET -WSAENETRESET
#define ECONNABORTED -WSAECONNABORTED
#define ECONNRESET -WSAECONNRESET
#define ENOBUFS -WSAENOBUFS
#define EISCONN -WSAEISCONN
#define ENOTCONN -WSAENOTCONN
#define ESHUTDOWN -WSAESHUTDOWN
#define ETOOMANYREFS -WSAETOOMANYREFS
#define ETIMEDOUT -WSAETIMEDOUT
#define ECONNREFUSED -WSAECONNREFUSED
#define ELOOP -WSAELOOP
#define EHOSTDOWN -WSAEHOSTDOWN
#define EHOSTUNREACH -WSAEHOSTUNREACH
#define EPROCLIM -WSAEPROCLIM
#define EUSERS -WSAEUSERS
#define EDQUOT -WSAEDQUOT
#define ESTALE -WSAESTALE
#define EREMOTE -WSAEREMOTE
#define EOVERFLOW -ERROR_ARITHMETIC_OVERFLOW
#define EACCESS EACCES
int error_table[] = {
E2BIG, EACCESS, 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 */
};
static value * unix_error_exn = NULL;
value unix_error_of_code (int errcode)
{
int errconstr;
value err;
errconstr =
cst_to_constr(errcode, error_table, sizeof(error_table)/sizeof(int), -1);
if (errconstr == Val_int(-1)) {
err = alloc_small(1, 0);
Field(err, 0) = Val_int(errcode);
} else {
err = errconstr;
}
return err;
}
void unix_error(int errcode, char *cmdname, value cmdarg)
{
value res;
value name = Val_unit, err = Val_unit, arg = Val_unit;
int errconstr;
Begin_roots3 (name, err, arg);
arg = cmdarg == Nothing ? copy_string("") : cmdarg;
name = copy_string(cmdname);
err = unix_error_of_code (errcode);
if (unix_error_exn == NULL) {
unix_error_exn = caml_named_value("Unix.Unix_error");
if (unix_error_exn == NULL)
invalid_argument("Exception Unix.Unix_error not initialized, please link unix.cma");
}
res = alloc_small(4, 0);
Field(res, 0) = *unix_error_exn;
Field(res, 1) = err;
Field(res, 2) = name;
Field(res, 3) = arg;
End_roots();
mlraise(res);
}
void uerror(cmdname, cmdarg)
char * cmdname;
value cmdarg;
{
unix_error(errno, cmdname, cmdarg);
}
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