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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. */
/* */
/**************************************************************************/
#define CAML_INTERNALS
#include <stddef.h>
#include <caml/mlvalues.h>
#include <caml/callback.h>
#include <caml/alloc.h>
#include <caml/memory.h>
#include <caml/fail.h>
#include <caml/custom.h>
#include <caml/platform.h>
#include "unixsupport.h"
#include "cst2constr.h"
#include <errno.h>
/* Heap-allocation of Windows file handles */
static int 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 handle_hash(value v)
{
return (intnat) Handle_val(v);
}
static struct custom_operations handle_ops = {
"_handle",
custom_finalize_default,
handle_compare,
handle_hash,
custom_serialize_default,
custom_deserialize_default,
custom_compare_ext_default,
custom_fixed_length_default
};
value caml_win32_alloc_handle(HANDLE h)
{
value res =
caml_alloc_custom(&handle_ops, sizeof(struct filedescr), 0, 1);
Handle_val(res) = h;
Descr_kind_val(res) = KIND_HANDLE;
((struct filedescr *) Data_custom_val(res))->crt_fd = NO_CRT_FD;
Flags_fd_val(res) = FLAGS_FD_IS_BLOCKING;
return res;
}
value caml_win32_alloc_socket(SOCKET s)
{
value res =
caml_alloc_custom(&handle_ops, sizeof(struct filedescr), 0, 1);
Socket_val(res) = s;
Descr_kind_val(res) = KIND_SOCKET;
((struct filedescr *) Data_custom_val(res))->crt_fd = 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_TOO_MANY_LINKS, 0, EMLINK},
{ 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 },
{ ERROR_PRIVILEGE_NOT_HELD, 0, EPERM},
{ WSAEINVAL, 0, EINVAL },
{ WSAEACCES, 0, EACCES },
{ WSAEBADF, 0, EBADF },
{ WSAEFAULT, 0, EFAULT },
{ WSAEINTR, 0, EINTR },
{ WSAEINVAL, 0, EINVAL },
{ WSAEMFILE, 0, EMFILE },
{ WSAENAMETOOLONG, 0, ENAMETOOLONG },
{ WSAENOTEMPTY, 0, ENOTEMPTY },
{ 0, -1, 0 }
};
void caml_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 caml_unix_error_message */
errno = -errcode;
}
/* Windows socket errors */
#undef EWOULDBLOCK
#define EWOULDBLOCK -WSAEWOULDBLOCK
#undef EINPROGRESS
#define EINPROGRESS -WSAEINPROGRESS
#undef EALREADY
#define EALREADY -WSAEALREADY
#undef ENOTSOCK
#define ENOTSOCK -WSAENOTSOCK
#undef EDESTADDRREQ
#define EDESTADDRREQ -WSAEDESTADDRREQ
#undef EMSGSIZE
#define EMSGSIZE -WSAEMSGSIZE
#undef EPROTOTYPE
#define EPROTOTYPE -WSAEPROTOTYPE
#undef ENOPROTOOPT
#define ENOPROTOOPT -WSAENOPROTOOPT
#undef EPROTONOSUPPORT
#define EPROTONOSUPPORT -WSAEPROTONOSUPPORT
#undef ESOCKTNOSUPPORT
#define ESOCKTNOSUPPORT -WSAESOCKTNOSUPPORT
#undef EOPNOTSUPP
#define EOPNOTSUPP -WSAEOPNOTSUPP
#undef EPFNOSUPPORT
#define EPFNOSUPPORT -WSAEPFNOSUPPORT
#undef EAFNOSUPPORT
#define EAFNOSUPPORT -WSAEAFNOSUPPORT
#undef EADDRINUSE
#define EADDRINUSE -WSAEADDRINUSE
#undef EADDRNOTAVAIL
#define EADDRNOTAVAIL -WSAEADDRNOTAVAIL
#undef ENETDOWN
#define ENETDOWN -WSAENETDOWN
#undef ENETUNREACH
#define ENETUNREACH -WSAENETUNREACH
#undef ENETRESET
#define ENETRESET -WSAENETRESET
#undef ECONNABORTED
#define ECONNABORTED -WSAECONNABORTED
#undef ECONNRESET
#define ECONNRESET -WSAECONNRESET
#undef ENOBUFS
#define ENOBUFS -WSAENOBUFS
#undef EISCONN
#define EISCONN -WSAEISCONN
#undef ENOTCONN
#define ENOTCONN -WSAENOTCONN
#undef ESHUTDOWN
#define ESHUTDOWN -WSAESHUTDOWN
#undef ETOOMANYREFS
#define ETOOMANYREFS -WSAETOOMANYREFS
#undef ETIMEDOUT
#define ETIMEDOUT -WSAETIMEDOUT
#undef ECONNREFUSED
#define ECONNREFUSED -WSAECONNREFUSED
#undef ELOOP
#define ELOOP -WSAELOOP
#undef EHOSTDOWN
#define EHOSTDOWN -WSAEHOSTDOWN
#undef EHOSTUNREACH
#define EHOSTUNREACH -WSAEHOSTUNREACH
#undef EPROCLIM
#define EPROCLIM -WSAEPROCLIM
#undef EUSERS
#define EUSERS -WSAEUSERS
#undef EDQUOT
#define EDQUOT -WSAEDQUOT
#undef ESTALE
#define ESTALE -WSAESTALE
#undef EREMOTE
#define EREMOTE -WSAEREMOTE
#undef EOVERFLOW
#define EOVERFLOW -ERROR_ARITHMETIC_OVERFLOW
#undef EACCESS
#define EACCESS EACCES
static 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 */
};
value caml_unix_error_of_code (int errcode)
{
int errconstr;
value err;
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_acquire(&caml_unix_error_exn);
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;
}
int caml_win32_set_inherit(HANDLE fd, BOOL inherit)
{
/* According to the MSDN, SetHandleInformation may not work
for console handles on WinNT4 and earlier versions. */
if (! SetHandleInformation(fd,
HANDLE_FLAG_INHERIT,
inherit ? HANDLE_FLAG_INHERIT : 0)) {
caml_win32_maperr(GetLastError());
return -1;
}
return 0;
}
|
