mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
583 lines
22 KiB
JavaScript
583 lines
22 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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{
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if (typeof Components != "undefined") {
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// We do not wish osfile_unix_back.jsm to be used directly as a main thread
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// module yet. When time comes, it will be loaded by a combination of
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// a main thread front-end/worker thread implementation that makes sure
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// that we are not executing synchronous IO code in the main thread.
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throw new Error("osfile_unix_back.jsm cannot be used from the main thread yet");
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}
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(function(exports) {
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"use strict";
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if (!exports.OS) {
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exports.OS = {};
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}
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if (!exports.OS.Unix) {
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exports.OS.Unix = {};
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}
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if (exports.OS.Unix.File) {
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return; // Avoid double-initialization
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}
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exports.OS.Unix.File = {};
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let LOG = exports.OS.Shared.LOG.bind(OS.Shared, "Unix", "back");
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let libc = exports.OS.Shared.Unix.libc;
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/**
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* Initialize the Unix module.
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*
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* @param {function=} declareFFI
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*/
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// FIXME: Both |init| and |aDeclareFFI| are deprecated, we should remove them
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let init = function init(aDeclareFFI) {
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let declareFFI;
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if (aDeclareFFI) {
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declareFFI = aDeclareFFI.bind(null, libc);
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} else {
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declareFFI = exports.OS.Shared.Unix.declareFFI;
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}
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// Shorthands
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let OSUnix = exports.OS.Unix;
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let UnixFile = exports.OS.Unix.File;
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if (!exports.OS.Types) {
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exports.OS.Types = {};
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}
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let Type = exports.OS.Shared.Type;
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let Types = Type;
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// Initialize types that require additional OS-specific
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// support - either finalization or matching against
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// OS-specific constants.
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/**
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* A file descriptor.
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*/
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Types.fd = Type.int.withName("fd");
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Types.fd.importFromC = function importFromC(fd_int) {
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return ctypes.CDataFinalizer(fd_int, _close);
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};
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/**
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* A C integer holding -1 in case of error or a file descriptor
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* in case of success.
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*/
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Types.negativeone_or_fd = Types.fd.withName("negativeone_or_fd");
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Types.negativeone_or_fd.importFromC =
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function importFromC(fd_int) {
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if (fd_int == -1) {
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return -1;
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}
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return ctypes.CDataFinalizer(fd_int, _close);
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};
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/**
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* A C integer holding -1 in case of error or a meaningless value
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* in case of success.
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*/
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Types.negativeone_or_nothing =
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Types.int.withName("negativeone_or_nothing");
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/**
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* A C integer holding -1 in case of error or a positive integer
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* in case of success.
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*/
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Types.negativeone_or_ssize_t =
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Types.ssize_t.withName("negativeone_or_ssize_t");
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/**
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* Various libc integer types
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*/
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Types.mode_t =
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Types.intn_t(OS.Constants.libc.OSFILE_SIZEOF_MODE_T).withName("mode_t");
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Types.uid_t =
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Types.intn_t(OS.Constants.libc.OSFILE_SIZEOF_UID_T).withName("uid_t");
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Types.gid_t =
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Types.intn_t(OS.Constants.libc.OSFILE_SIZEOF_GID_T).withName("gid_t");
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/**
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* Type |time_t|
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*/
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Types.time_t =
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Types.intn_t(OS.Constants.libc.OSFILE_SIZEOF_TIME_T).withName("time_t");
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// Structure |dirent|
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// Building this type is rather complicated, as its layout varies between
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// variants of Unix. For this reason, we rely on a number of constants
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// (computed in C from the C data structures) that give us the layout.
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// The structure we compute looks like
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// { int8_t[...] before_d_type; // ignored content
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// int8_t d_type ;
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// int8_t[...] before_d_name; // ignored content
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// char[...] d_name;
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// };
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{
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let dirent = new OS.Shared.HollowStructure("dirent",
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OS.Constants.libc.OSFILE_SIZEOF_DIRENT);
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dirent.add_field_at(OS.Constants.libc.OSFILE_OFFSETOF_DIRENT_D_TYPE,
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"d_type", ctypes.uint8_t);
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dirent.add_field_at(OS.Constants.libc.OSFILE_OFFSETOF_DIRENT_D_NAME,
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"d_name", ctypes.ArrayType(ctypes.char, OS.Constants.libc.OSFILE_SIZEOF_DIRENT_D_NAME));
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// We now have built |dirent|.
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Types.dirent = dirent.getType();
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}
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Types.null_or_dirent_ptr =
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new Type("null_of_dirent",
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Types.dirent.out_ptr.implementation);
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// Structure |stat|
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// Same technique
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{
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let stat = new OS.Shared.HollowStructure("stat",
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OS.Constants.libc.OSFILE_SIZEOF_STAT);
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stat.add_field_at(OS.Constants.libc.OSFILE_OFFSETOF_STAT_ST_MODE,
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"st_mode", Types.mode_t.implementation);
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stat.add_field_at(OS.Constants.libc.OSFILE_OFFSETOF_STAT_ST_UID,
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"st_uid", Types.uid_t.implementation);
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stat.add_field_at(OS.Constants.libc.OSFILE_OFFSETOF_STAT_ST_GID,
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"st_gid", Types.gid_t.implementation);
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// Here, things get complicated with different data structures.
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// Some platforms have |time_t st_atime| and some platforms have
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// |timespec st_atimespec|. However, since |timespec| starts with
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// a |time_t|, followed by nanoseconds, we just cheat and pretend
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// that everybody has |time_t st_atime|, possibly followed by padding
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stat.add_field_at(OS.Constants.libc.OSFILE_OFFSETOF_STAT_ST_ATIME,
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"st_atime", Types.time_t.implementation);
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stat.add_field_at(OS.Constants.libc.OSFILE_OFFSETOF_STAT_ST_MTIME,
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"st_mtime", Types.time_t.implementation);
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stat.add_field_at(OS.Constants.libc.OSFILE_OFFSETOF_STAT_ST_CTIME,
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"st_ctime", Types.time_t.implementation);
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// To complicate further, MacOS and some BSDs have a field |birthtime|
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if ("OSFILE_OFFSETOF_STAT_ST_BIRTHTIME" in OS.Constants.libc) {
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stat.add_field_at(OS.Constants.libc.OSFILE_OFFSETOF_STAT_ST_BIRTHTIME,
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"st_birthtime", Types.time_t.implementation);
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}
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stat.add_field_at(OS.Constants.libc.OSFILE_OFFSETOF_STAT_ST_SIZE,
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"st_size", Types.size_t.implementation);
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Types.stat = stat.getType();
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}
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// Structure |DIR|
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if ("OSFILE_SIZEOF_DIR" in OS.Constants.libc) {
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// On platforms for which we need to access the fields of DIR
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// directly (e.g. because certain functions are implemented
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// as macros), we need to define DIR as a hollow structure.
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let DIR = new OS.Shared.HollowStructure(
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"DIR",
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OS.Constants.libc.OSFILE_SIZEOF_DIR);
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DIR.add_field_at(
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OS.Constants.libc.OSFILE_OFFSETOF_DIR_DD_FD,
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"dd_fd",
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Types.fd.implementation);
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Types.DIR = DIR.getType();
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} else {
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// On other platforms, we keep DIR as a blackbox
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Types.DIR =
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new Type("DIR",
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ctypes.StructType("DIR"));
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}
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Types.null_or_DIR_ptr =
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Types.DIR.out_ptr.withName("null_or_DIR*");
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Types.null_or_DIR_ptr.importFromC = function importFromC(dir) {
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if (dir == null || dir.isNull()) {
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return null;
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}
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return ctypes.CDataFinalizer(dir, _close_dir);
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};
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// Declare libc functions as functions of |OS.Unix.File|
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// Finalizer-related functions
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let _close = UnixFile._close =
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libc.declare("close", ctypes.default_abi,
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/*return */ctypes.int,
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/*fd*/ ctypes.int);
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UnixFile.close = function close(fd) {
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// Detach the finalizer and call |_close|.
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return fd.dispose();
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};
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let _close_dir =
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libc.declare("closedir", ctypes.default_abi,
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/*return */ctypes.int,
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/*dirp*/ Types.DIR.in_ptr.implementation);
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UnixFile.closedir = function closedir(fd) {
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// Detach the finalizer and call |_close_dir|.
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return fd.dispose();
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};
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UnixFile.free =
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libc.declare("free", ctypes.default_abi,
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/*return*/ ctypes.void_t,
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/*ptr*/ ctypes.voidptr_t);
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// Other functions
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UnixFile.access =
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declareFFI("access", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*path*/ Types.path,
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/*mode*/ Types.int);
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UnixFile.chdir =
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declareFFI("chdir", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*path*/ Types.path);
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UnixFile.chmod =
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declareFFI("chmod", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*path*/ Types.path,
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/*mode*/ Types.mode_t);
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UnixFile.chown =
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declareFFI("chown", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*path*/ Types.path,
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/*uid*/ Types.uid_t,
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/*gid*/ Types.gid_t);
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UnixFile.copyfile =
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declareFFI("copyfile", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*source*/ Types.path,
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/*dest*/ Types.path,
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/*state*/ Types.void_t.in_ptr, // Ignored atm
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/*flags*/ Types.uint32_t);
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UnixFile.dup =
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declareFFI("dup", ctypes.default_abi,
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/*return*/ Types.negativeone_or_fd,
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/*fd*/ Types.fd);
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if ("OSFILE_SIZEOF_DIR" in OS.Constants.libc) {
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// On platforms for which |dirfd| is a macro
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UnixFile.dirfd =
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function dirfd(DIRp) {
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return Types.DIR.in_ptr.implementation(DIRp).contents.dd_fd;
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};
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} else {
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// On platforms for which |dirfd| is a function
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UnixFile.dirfd =
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declareFFI("dirfd", ctypes.default_abi,
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/*return*/ Types.negativeone_or_fd,
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/*dir*/ Types.DIR.in_ptr);
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}
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UnixFile.chdir =
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declareFFI("chdir", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*path*/ Types.path);
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UnixFile.fchdir =
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declareFFI("fchdir", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*fd*/ Types.fd);
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UnixFile.fchown =
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declareFFI("fchown", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*fd*/ Types.fd,
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/*uid_t*/ Types.uid_t,
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/*gid_t*/ Types.gid_t);
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UnixFile.fsync =
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declareFFI("fsync", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*fd*/ Types.fd);
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UnixFile.getcwd =
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declareFFI("getcwd", ctypes.default_abi,
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/*return*/ Types.out_path,
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/*buf*/ Types.out_path,
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/*size*/ Types.size_t);
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UnixFile.getwd =
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declareFFI("getwd", ctypes.default_abi,
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/*return*/ Types.out_path,
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/*buf*/ Types.out_path);
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// Two variants of |getwd| which allocate the memory
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// dynamically.
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// Linux/Android version
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UnixFile.get_current_dir_name =
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declareFFI("get_current_dir_name", ctypes.default_abi,
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/*return*/ Types.out_path.releaseWith(UnixFile.free));
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// MacOS/BSD version (will return NULL on Linux/Android)
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UnixFile.getwd_auto =
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declareFFI("getwd", ctypes.default_abi,
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/*return*/ Types.out_path.releaseWith(UnixFile.free),
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/*buf*/ Types.void_t.out_ptr);
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UnixFile.fdatasync =
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declareFFI("fdatasync", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*fd*/ Types.fd); // Note: MacOS/BSD-specific
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UnixFile.ftruncate =
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declareFFI("ftruncate", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*fd*/ Types.fd,
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/*length*/ Types.off_t);
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if (OS.Constants.libc._DARWIN_FEATURE_64_BIT_INODE) {
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UnixFile.fstat =
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declareFFI("fstat$INODE64", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*path*/ Types.fd,
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/*buf*/ Types.stat.out_ptr
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);
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} else {
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UnixFile.fstat =
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declareFFI("fstat", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*path*/ Types.fd,
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/*buf*/ Types.stat.out_ptr
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);
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}
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UnixFile.lchown =
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declareFFI("lchown", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*path*/ Types.path,
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/*uid_t*/ Types.uid_t,
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/*gid_t*/ Types.gid_t);
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UnixFile.link =
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declareFFI("link", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*source*/ Types.path,
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/*dest*/ Types.path);
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UnixFile.lseek =
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declareFFI("lseek", ctypes.default_abi,
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/*return*/ Types.off_t,
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/*fd*/ Types.fd,
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/*offset*/ Types.off_t,
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/*whence*/ Types.int);
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UnixFile.mkdir =
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declareFFI("mkdir", ctypes.default_abi,
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/*return*/ Types.int,
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/*path*/ Types.path,
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/*mode*/ Types.int);
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UnixFile.mkstemp =
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declareFFI("mkstemp", ctypes.default_abi,
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/*return*/ Types.fd,
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/*template*/Types.out_path);
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UnixFile.open =
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declareFFI("open", ctypes.default_abi,
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/*return*/Types.negativeone_or_fd,
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/*path*/ Types.path,
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/*oflags*/Types.int,
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/*mode*/ Types.int);
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UnixFile.opendir =
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declareFFI("opendir", ctypes.default_abi,
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/*return*/ Types.null_or_DIR_ptr,
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/*path*/ Types.path);
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UnixFile.pread =
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declareFFI("pread", ctypes.default_abi,
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/*return*/ Types.negativeone_or_ssize_t,
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/*fd*/ Types.fd,
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/*buf*/ Types.void_t.out_ptr,
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/*nbytes*/ Types.size_t,
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/*offset*/ Types.off_t);
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UnixFile.pwrite =
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declareFFI("pwrite", ctypes.default_abi,
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/*return*/ Types.negativeone_or_ssize_t,
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/*fd*/ Types.fd,
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/*buf*/ Types.void_t.in_ptr,
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/*nbytes*/ Types.size_t,
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/*offset*/ Types.off_t);
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UnixFile.read =
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declareFFI("read", ctypes.default_abi,
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/*return*/Types.negativeone_or_ssize_t,
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/*fd*/ Types.fd,
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/*buf*/ Types.void_t.out_ptr,
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/*nbytes*/Types.size_t);
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|
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if (OS.Constants.libc._DARWIN_FEATURE_64_BIT_INODE) {
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// Special case for MacOS X 10.5+
|
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// Symbol name "readdir" still exists but is used for a
|
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// deprecated function that does not match the
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// constants of |OS.Constants.libc|.
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UnixFile.readdir =
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declareFFI("readdir$INODE64", ctypes.default_abi,
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/*return*/Types.null_or_dirent_ptr,
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/*dir*/ Types.DIR.in_ptr); // For MacOS X
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} else {
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UnixFile.readdir =
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declareFFI("readdir", ctypes.default_abi,
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/*return*/Types.null_or_dirent_ptr,
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/*dir*/ Types.DIR.in_ptr); // Other Unices
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}
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UnixFile.rename =
|
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declareFFI("rename", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*old*/ Types.path,
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/*new*/ Types.path);
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|
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UnixFile.rmdir =
|
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declareFFI("rmdir", ctypes.default_abi,
|
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/*return*/ Types.int,
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/*path*/ Types.path);
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|
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UnixFile.splice =
|
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declareFFI("splice", ctypes.default_abi,
|
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/*return*/ Types.long,
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/*fd_in*/ Types.fd,
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/*off_in*/ Types.off_t.in_ptr,
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/*fd_out*/ Types.fd,
|
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/*off_out*/Types.off_t.in_ptr,
|
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/*len*/ Types.size_t,
|
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/*flags*/ Types.unsigned_int); // Linux/Android-specific
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UnixFile.symlink =
|
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declareFFI("symlink", ctypes.default_abi,
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/*return*/ Types.negativeone_or_nothing,
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/*source*/ Types.path,
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/*dest*/ Types.path);
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UnixFile.truncate =
|
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declareFFI("truncate", ctypes.default_abi,
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/*return*/Types.negativeone_or_nothing,
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/*path*/ Types.path,
|
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/*length*/ Types.off_t);
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|
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UnixFile.unlink =
|
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declareFFI("unlink", ctypes.default_abi,
|
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/*return*/ Types.negativeone_or_nothing,
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/*path*/ Types.path);
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|
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UnixFile.write =
|
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declareFFI("write", ctypes.default_abi,
|
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/*return*/ Types.negativeone_or_ssize_t,
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/*fd*/ Types.fd,
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/*buf*/ Types.void_t.in_ptr,
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/*nbytes*/ Types.size_t);
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|
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// Weird cases that require special treatment
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|
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// OSes use a variety of hacks to differentiate between
|
|
// 32-bits and 64-bits versions of |stat|, |lstat|, |fstat|.
|
|
if (OS.Constants.libc._DARWIN_FEATURE_64_BIT_INODE) {
|
|
// MacOS X 64-bits
|
|
UnixFile.stat =
|
|
declareFFI("stat$INODE64", ctypes.default_abi,
|
|
/*return*/ Types.negativeone_or_nothing,
|
|
/*path*/ Types.path,
|
|
/*buf*/ Types.stat.out_ptr
|
|
);
|
|
UnixFile.lstat =
|
|
declareFFI("lstat$INODE64", ctypes.default_abi,
|
|
/*return*/ Types.negativeone_or_nothing,
|
|
/*path*/ Types.path,
|
|
/*buf*/ Types.stat.out_ptr
|
|
);
|
|
UnixFile.fstat =
|
|
declareFFI("fstat$INODE64", ctypes.default_abi,
|
|
/*return*/ Types.negativeone_or_nothing,
|
|
/*path*/ Types.fd,
|
|
/*buf*/ Types.stat.out_ptr
|
|
);
|
|
} else if (OS.Constants.libc._STAT_VER != undefined) {
|
|
const ver = OS.Constants.libc._STAT_VER;
|
|
// Linux, all widths
|
|
let xstat =
|
|
declareFFI("__xstat", ctypes.default_abi,
|
|
/*return*/ Types.negativeone_or_nothing,
|
|
/*_stat_ver*/ Types.int,
|
|
/*path*/ Types.path,
|
|
/*buf*/ Types.stat.out_ptr);
|
|
let lxstat =
|
|
declareFFI("__lxstat", ctypes.default_abi,
|
|
/*return*/ Types.negativeone_or_nothing,
|
|
/*_stat_ver*/ Types.int,
|
|
/*path*/ Types.path,
|
|
/*buf*/ Types.stat.out_ptr);
|
|
let fxstat =
|
|
declareFFI("__fxstat", ctypes.default_abi,
|
|
/*return*/ Types.negativeone_or_nothing,
|
|
/*_stat_ver*/ Types.int,
|
|
/*fd*/ Types.fd,
|
|
/*buf*/ Types.stat.out_ptr);
|
|
|
|
UnixFile.stat = function stat(path, buf) {
|
|
return xstat(ver, path, buf);
|
|
};
|
|
UnixFile.lstat = function stat(path, buf) {
|
|
return lxstat(ver, path, buf);
|
|
};
|
|
UnixFile.fstat = function stat(fd, buf) {
|
|
return fxstat(ver, fd, buf);
|
|
};
|
|
} else {
|
|
// Mac OS X 32-bits, other Unix
|
|
UnixFile.stat =
|
|
declareFFI("stat", ctypes.default_abi,
|
|
/*return*/ Types.negativeone_or_nothing,
|
|
/*path*/ Types.path,
|
|
/*buf*/ Types.stat.out_ptr
|
|
);
|
|
UnixFile.lstat =
|
|
declareFFI("lstat", ctypes.default_abi,
|
|
/*return*/ Types.negativeone_or_nothing,
|
|
/*path*/ Types.path,
|
|
/*buf*/ Types.stat.out_ptr
|
|
);
|
|
UnixFile.fstat =
|
|
declareFFI("fstat", ctypes.default_abi,
|
|
/*return*/ Types.negativeone_or_nothing,
|
|
/*fd*/ Types.fd,
|
|
/*buf*/ Types.stat.out_ptr
|
|
);
|
|
}
|
|
|
|
// We cannot make a C array of CDataFinalizer, so
|
|
// pipe cannot be directly defined as a C function.
|
|
|
|
let _pipe =
|
|
declareFFI("pipe", ctypes.default_abi,
|
|
/*return*/ Types.negativeone_or_nothing,
|
|
/*fds*/ new Type("two file descriptors",
|
|
ctypes.ArrayType(ctypes.int, 2)));
|
|
|
|
// A shared per-thread buffer used to communicate with |pipe|
|
|
let _pipebuf = new (ctypes.ArrayType(ctypes.int, 2))();
|
|
|
|
UnixFile.pipe = function pipe(array) {
|
|
let result = _pipe(_pipebuf);
|
|
if (result == -1) {
|
|
return result;
|
|
}
|
|
array[0] = ctypes.CDataFinalizer(_pipebuf[0], _close);
|
|
array[1] = ctypes.CDataFinalizer(_pipebuf[1], _close);
|
|
return result;
|
|
};
|
|
};
|
|
exports.OS.Unix.File._init = init;
|
|
})(this);
|
|
}
|