Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2916 insertions, 0 deletions

diff --git a/xpcom/io/nsLocalFileUnix.cpp b/xpcom/io/nsLocalFileUnix.cpp
new file mode 100644
index 0000000000..f841a78da5
--- /dev/null
+++ b/xpcom/io/nsLocalFileUnix.cpp
@@ -0,0 +1,2916 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/**
+ * Implementation of nsIFile for "unixy" systems.
+ */
+
+#include "nsLocalFile.h"
+
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/CheckedInt.h"
+#include "mozilla/DebugOnly.h"
+#include "mozilla/Sprintf.h"
+#include "mozilla/FilePreferences.h"
+#include "prtime.h"
+
+#include <sys/select.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <dirent.h>
+
+#if defined(XP_MACOSX)
+#  include <sys/xattr.h>
+#endif
+
+#if defined(USE_LINUX_QUOTACTL)
+#  include <sys/mount.h>
+#  include <sys/quota.h>
+#  include <sys/sysmacros.h>
+#  ifndef BLOCK_SIZE
+#    define BLOCK_SIZE 1024 /* kernel block size */
+#  endif
+#endif
+
+#include "nsDirectoryServiceDefs.h"
+#include "nsCOMPtr.h"
+#include "nsIFile.h"
+#include "nsString.h"
+#include "nsIDirectoryEnumerator.h"
+#include "nsSimpleEnumerator.h"
+#include "private/pprio.h"
+#include "prlink.h"
+
+#ifdef MOZ_WIDGET_GTK
+#  include "nsIGIOService.h"
+#endif
+
+#ifdef MOZ_WIDGET_COCOA
+#  include <Carbon/Carbon.h>
+#  include "CocoaFileUtils.h"
+#  include "prmem.h"
+#  include "plbase64.h"
+
+static nsresult MacErrorMapper(OSErr inErr);
+#endif
+
+#ifdef MOZ_WIDGET_ANDROID
+#  include "mozilla/java/GeckoAppShellWrappers.h"
+#  include "nsIMIMEService.h"
+#  include <linux/magic.h>
+#endif
+
+#include "nsNativeCharsetUtils.h"
+#include "nsTraceRefcnt.h"
+
+/**
+ *  we need these for statfs()
+ */
+#ifdef HAVE_SYS_STATVFS_H
+#  if defined(__osf__) && defined(__DECCXX)
+extern "C" int statvfs(const char*, struct statvfs*);
+#  endif
+#  include <sys/statvfs.h>
+#endif
+
+#ifdef HAVE_SYS_STATFS_H
+#  include <sys/statfs.h>
+#endif
+
+#ifdef HAVE_SYS_VFS_H
+#  include <sys/vfs.h>
+#endif
+
+#if defined(HAVE_STATVFS64) && (!defined(LINUX) && !defined(__osf__))
+#  define STATFS statvfs64
+#  define F_BSIZE f_frsize
+#elif defined(HAVE_STATVFS) && (!defined(LINUX) && !defined(__osf__))
+#  define STATFS statvfs
+#  define F_BSIZE f_frsize
+#elif defined(HAVE_STATFS64)
+#  define STATFS statfs64
+#  define F_BSIZE f_bsize
+#elif defined(HAVE_STATFS)
+#  define STATFS statfs
+#  define F_BSIZE f_bsize
+#endif
+
+using namespace mozilla;
+
+#define ENSURE_STAT_CACHE()                            \
+  do {                                                 \
+    if (!FillStatCache()) return NSRESULT_FOR_ERRNO(); \
+  } while (0)
+
+#define CHECK_mPath()                                     \
+  do {                                                    \
+    if (mPath.IsEmpty()) return NS_ERROR_NOT_INITIALIZED; \
+    if (!FilePreferences::IsAllowedPath(mPath))           \
+      return NS_ERROR_FILE_ACCESS_DENIED;                 \
+  } while (0)
+
+static PRTime TimespecToMillis(const struct timespec& aTimeSpec) {
+  return PRTime(aTimeSpec.tv_sec) * PR_MSEC_PER_SEC +
+         PRTime(aTimeSpec.tv_nsec) / PR_NSEC_PER_MSEC;
+}
+
+/* directory enumerator */
+class nsDirEnumeratorUnix final : public nsSimpleEnumerator,
+                                  public nsIDirectoryEnumerator {
+ public:
+  nsDirEnumeratorUnix();
+
+  // nsISupports interface
+  NS_DECL_ISUPPORTS_INHERITED
+
+  // nsISimpleEnumerator interface
+  NS_DECL_NSISIMPLEENUMERATOR
+
+  // nsIDirectoryEnumerator interface
+  NS_DECL_NSIDIRECTORYENUMERATOR
+
+  NS_IMETHOD Init(nsLocalFile* aParent, bool aIgnored);
+
+  NS_FORWARD_NSISIMPLEENUMERATORBASE(nsSimpleEnumerator::)
+
+  const nsID& DefaultInterface() override { return NS_GET_IID(nsIFile); }
+
+ private:
+  ~nsDirEnumeratorUnix() override;
+
+ protected:
+  NS_IMETHOD GetNextEntry();
+
+  DIR* mDir;
+  struct dirent* mEntry;
+  nsCString mParentPath;
+};
+
+nsDirEnumeratorUnix::nsDirEnumeratorUnix() : mDir(nullptr), mEntry(nullptr) {}
+
+nsDirEnumeratorUnix::~nsDirEnumeratorUnix() { Close(); }
+
+NS_IMPL_ISUPPORTS_INHERITED(nsDirEnumeratorUnix, nsSimpleEnumerator,
+                            nsIDirectoryEnumerator)
+
+NS_IMETHODIMP
+nsDirEnumeratorUnix::Init(nsLocalFile* aParent,
+                          bool aResolveSymlinks /*ignored*/) {
+  nsAutoCString dirPath;
+  if (NS_FAILED(aParent->GetNativePath(dirPath)) || dirPath.IsEmpty()) {
+    return NS_ERROR_FILE_INVALID_PATH;
+  }
+
+  // When enumerating the directory, the paths must have a slash at the end.
+  nsAutoCString dirPathWithSlash(dirPath);
+  dirPathWithSlash.Append('/');
+  if (!FilePreferences::IsAllowedPath(dirPathWithSlash)) {
+    return NS_ERROR_FILE_ACCESS_DENIED;
+  }
+
+  if (NS_FAILED(aParent->GetNativePath(mParentPath))) {
+    return NS_ERROR_FAILURE;
+  }
+
+  mDir = opendir(dirPath.get());
+  if (!mDir) {
+    return NSRESULT_FOR_ERRNO();
+  }
+  return GetNextEntry();
+}
+
+NS_IMETHODIMP
+nsDirEnumeratorUnix::HasMoreElements(bool* aResult) {
+  *aResult = mDir && mEntry;
+  if (!*aResult) {
+    Close();
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDirEnumeratorUnix::GetNext(nsISupports** aResult) {
+  nsCOMPtr<nsIFile> file;
+  nsresult rv = GetNextFile(getter_AddRefs(file));
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+  if (!file) {
+    return NS_ERROR_FAILURE;
+  }
+  file.forget(aResult);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDirEnumeratorUnix::GetNextEntry() {
+  do {
+    errno = 0;
+    mEntry = readdir(mDir);
+
+    // end of dir or error
+    if (!mEntry) {
+      return NSRESULT_FOR_ERRNO();
+    }
+
+    // keep going past "." and ".."
+  } while (mEntry->d_name[0] == '.' &&
+           (mEntry->d_name[1] == '\0' ||                                // .\0
+            (mEntry->d_name[1] == '.' && mEntry->d_name[2] == '\0')));  // ..\0
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsDirEnumeratorUnix::GetNextFile(nsIFile** aResult) {
+  nsresult rv;
+  if (!mDir || !mEntry) {
+    *aResult = nullptr;
+    return NS_OK;
+  }
+
+  nsCOMPtr<nsIFile> file = new nsLocalFile();
+
+  if (NS_FAILED(rv = file->InitWithNativePath(mParentPath)) ||
+      NS_FAILED(rv = file->AppendNative(nsDependentCString(mEntry->d_name)))) {
+    return rv;
+  }
+
+  file.forget(aResult);
+  return GetNextEntry();
+}
+
+NS_IMETHODIMP
+nsDirEnumeratorUnix::Close() {
+  if (mDir) {
+    closedir(mDir);
+    mDir = nullptr;
+  }
+  return NS_OK;
+}
+
+nsLocalFile::nsLocalFile() : mCachedStat() {}
+
+nsLocalFile::nsLocalFile(const nsACString& aFilePath) : mCachedStat() {
+  InitWithNativePath(aFilePath);
+}
+
+nsLocalFile::nsLocalFile(const nsLocalFile& aOther) : mPath(aOther.mPath) {}
+
+#ifdef MOZ_WIDGET_COCOA
+NS_IMPL_ISUPPORTS(nsLocalFile, nsILocalFileMac, nsIFile)
+#else
+NS_IMPL_ISUPPORTS(nsLocalFile, nsIFile)
+#endif
+
+nsresult nsLocalFile::nsLocalFileConstructor(const nsIID& aIID,
+                                             void** aInstancePtr) {
+  if (NS_WARN_IF(!aInstancePtr)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  *aInstancePtr = nullptr;
+
+  nsCOMPtr<nsIFile> inst = new nsLocalFile();
+  return inst->QueryInterface(aIID, aInstancePtr);
+}
+
+bool nsLocalFile::FillStatCache() {
+  if (!FilePreferences::IsAllowedPath(mPath)) {
+    errno = EACCES;
+    return false;
+  }
+
+  if (STAT(mPath.get(), &mCachedStat) == -1) {
+    // try lstat it may be a symlink
+    if (LSTAT(mPath.get(), &mCachedStat) == -1) {
+      return false;
+    }
+  }
+  return true;
+}
+
+NS_IMETHODIMP
+nsLocalFile::Clone(nsIFile** aFile) {
+  // Just copy-construct ourselves
+  RefPtr<nsLocalFile> copy = new nsLocalFile(*this);
+  copy.forget(aFile);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::InitWithNativePath(const nsACString& aFilePath) {
+  if (aFilePath.EqualsLiteral("~") ||
+      Substring(aFilePath, 0, 2).EqualsLiteral("~/")) {
+    nsCOMPtr<nsIFile> homeDir;
+    nsAutoCString homePath;
+    if (NS_FAILED(
+            NS_GetSpecialDirectory(NS_OS_HOME_DIR, getter_AddRefs(homeDir))) ||
+        NS_FAILED(homeDir->GetNativePath(homePath))) {
+      return NS_ERROR_FAILURE;
+    }
+
+    mPath = homePath;
+    if (aFilePath.Length() > 2) {
+      mPath.Append(Substring(aFilePath, 1, aFilePath.Length() - 1));
+    }
+  } else {
+    if (aFilePath.IsEmpty() || aFilePath.First() != '/') {
+      return NS_ERROR_FILE_UNRECOGNIZED_PATH;
+    }
+    mPath = aFilePath;
+  }
+
+  if (!FilePreferences::IsAllowedPath(mPath)) {
+    mPath.Truncate();
+    return NS_ERROR_FILE_ACCESS_DENIED;
+  }
+
+  // trim off trailing slashes
+  ssize_t len = mPath.Length();
+  while ((len > 1) && (mPath[len - 1] == '/')) {
+    --len;
+  }
+  mPath.SetLength(len);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::CreateAllAncestors(uint32_t aPermissions) {
+  if (!FilePreferences::IsAllowedPath(mPath)) {
+    return NS_ERROR_FILE_ACCESS_DENIED;
+  }
+
+  // <jband> I promise to play nice
+  char* buffer = mPath.BeginWriting();
+  char* slashp = buffer;
+  int mkdir_result = 0;
+  int mkdir_errno;
+
+#ifdef DEBUG_NSIFILE
+  fprintf(stderr, "nsIFile: before: %s\n", buffer);
+#endif
+
+  while ((slashp = strchr(slashp + 1, '/'))) {
+    /*
+     * Sequences of '/' are equivalent to a single '/'.
+     */
+    if (slashp[1] == '/') {
+      continue;
+    }
+
+    /*
+     * If the path has a trailing slash, don't make the last component,
+     * because we'll get EEXIST in Create when we try to build the final
+     * component again, and it's easier to condition the logic here than
+     * there.
+     */
+    if (slashp[1] == '\0') {
+      break;
+    }
+
+    /* Temporarily NUL-terminate here */
+    *slashp = '\0';
+#ifdef DEBUG_NSIFILE
+    fprintf(stderr, "nsIFile: mkdir(\"%s\")\n", buffer);
+#endif
+    mkdir_result = mkdir(buffer, aPermissions);
+    if (mkdir_result == -1) {
+      mkdir_errno = errno;
+      /*
+       * Always set |errno| to EEXIST if the dir already exists
+       * (we have to do this here since the errno value is not consistent
+       * in all cases - various reasons like different platform,
+       * automounter-controlled dir, etc. can affect it (see bug 125489
+       * for details)).
+       */
+      if (mkdir_errno != EEXIST && access(buffer, F_OK) == 0) {
+        mkdir_errno = EEXIST;
+      }
+#ifdef DEBUG_NSIFILE
+      fprintf(stderr, "nsIFile: errno: %d\n", mkdir_errno);
+#endif
+    }
+
+    /* Put the / back */
+    *slashp = '/';
+  }
+
+  /*
+   * We could get EEXIST for an existing file -- not directory --
+   * but that's OK: we'll get ENOTDIR when we try to make the final
+   * component of the path back in Create and error out appropriately.
+   */
+  if (mkdir_result == -1 && mkdir_errno != EEXIST) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::OpenNSPRFileDesc(int32_t aFlags, int32_t aMode,
+                              PRFileDesc** aResult) {
+  if (!FilePreferences::IsAllowedPath(mPath)) {
+    return NS_ERROR_FILE_ACCESS_DENIED;
+  }
+  *aResult = PR_Open(mPath.get(), aFlags, aMode);
+  if (!*aResult) {
+    return NS_ErrorAccordingToNSPR();
+  }
+
+  if (aFlags & DELETE_ON_CLOSE) {
+    PR_Delete(mPath.get());
+  }
+
+#if defined(HAVE_POSIX_FADVISE)
+  if (aFlags & OS_READAHEAD) {
+    posix_fadvise(PR_FileDesc2NativeHandle(*aResult), 0, 0,
+                  POSIX_FADV_SEQUENTIAL);
+  }
+#endif
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::OpenANSIFileDesc(const char* aMode, FILE** aResult) {
+  if (!FilePreferences::IsAllowedPath(mPath)) {
+    return NS_ERROR_FILE_ACCESS_DENIED;
+  }
+  *aResult = fopen(mPath.get(), aMode);
+  if (!*aResult) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+static int do_create(const char* aPath, int aFlags, mode_t aMode,
+                     PRFileDesc** aResult) {
+  *aResult = PR_Open(aPath, aFlags, aMode);
+  return *aResult ? 0 : -1;
+}
+
+static int do_mkdir(const char* aPath, int aFlags, mode_t aMode,
+                    PRFileDesc** aResult) {
+  *aResult = nullptr;
+  return mkdir(aPath, aMode);
+}
+
+nsresult nsLocalFile::CreateAndKeepOpen(uint32_t aType, int aFlags,
+                                        uint32_t aPermissions,
+                                        bool aSkipAncestors,
+                                        PRFileDesc** aResult) {
+  if (!FilePreferences::IsAllowedPath(mPath)) {
+    return NS_ERROR_FILE_ACCESS_DENIED;
+  }
+
+  if (aType != NORMAL_FILE_TYPE && aType != DIRECTORY_TYPE) {
+    return NS_ERROR_FILE_UNKNOWN_TYPE;
+  }
+
+  int (*createFunc)(const char*, int, mode_t, PRFileDesc**) =
+      (aType == NORMAL_FILE_TYPE) ? do_create : do_mkdir;
+
+  int result = createFunc(mPath.get(), aFlags, aPermissions, aResult);
+  if (result == -1 && errno == ENOENT && !aSkipAncestors) {
+    /*
+     * If we failed because of missing ancestor components, try to create
+     * them and then retry the original creation.
+     *
+     * Ancestor directories get the same permissions as the file we're
+     * creating, with the X bit set for each of (user,group,other) with
+     * an R bit in the original permissions.    If you want to do anything
+     * fancy like setgid or sticky bits, do it by hand.
+     */
+    int dirperm = aPermissions;
+    if (aPermissions & S_IRUSR) {
+      dirperm |= S_IXUSR;
+    }
+    if (aPermissions & S_IRGRP) {
+      dirperm |= S_IXGRP;
+    }
+    if (aPermissions & S_IROTH) {
+      dirperm |= S_IXOTH;
+    }
+
+#ifdef DEBUG_NSIFILE
+    fprintf(stderr, "nsIFile: perm = %o, dirperm = %o\n", aPermissions,
+            dirperm);
+#endif
+
+    if (NS_FAILED(CreateAllAncestors(dirperm))) {
+      return NS_ERROR_FAILURE;
+    }
+
+#ifdef DEBUG_NSIFILE
+    fprintf(stderr, "nsIFile: Create(\"%s\") again\n", mPath.get());
+#endif
+    result = createFunc(mPath.get(), aFlags, aPermissions, aResult);
+  }
+  return NSRESULT_FOR_RETURN(result);
+}
+
+NS_IMETHODIMP
+nsLocalFile::Create(uint32_t aType, uint32_t aPermissions,
+                    bool aSkipAncestors) {
+  if (!FilePreferences::IsAllowedPath(mPath)) {
+    return NS_ERROR_FILE_ACCESS_DENIED;
+  }
+
+  PRFileDesc* junk = nullptr;
+  nsresult rv = CreateAndKeepOpen(
+      aType, PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE | PR_EXCL, aPermissions,
+      aSkipAncestors, &junk);
+  if (junk) {
+    PR_Close(junk);
+  }
+  return rv;
+}
+
+NS_IMETHODIMP
+nsLocalFile::AppendNative(const nsACString& aFragment) {
+  if (aFragment.IsEmpty()) {
+    return NS_OK;
+  }
+
+  // only one component of path can be appended and cannot append ".."
+  nsACString::const_iterator begin, end;
+  if (aFragment.EqualsASCII("..") ||
+      FindCharInReadable('/', aFragment.BeginReading(begin),
+                         aFragment.EndReading(end))) {
+    return NS_ERROR_FILE_UNRECOGNIZED_PATH;
+  }
+
+  return AppendRelativeNativePath(aFragment);
+}
+
+NS_IMETHODIMP
+nsLocalFile::AppendRelativeNativePath(const nsACString& aFragment) {
+  if (aFragment.IsEmpty()) {
+    return NS_OK;
+  }
+
+  // No leading '/' and cannot be ".."
+  if (aFragment.First() == '/' || aFragment.EqualsASCII("..")) {
+    return NS_ERROR_FILE_UNRECOGNIZED_PATH;
+  }
+
+  if (aFragment.Contains('/')) {
+    // can't contain .. as a path component. Ensure that the valid components
+    // "foo..foo", "..foo", and "foo.." are not falsely detected,
+    // but the invalid paths "../", "foo/..", "foo/../foo",
+    // "../foo", etc are.
+    constexpr auto doubleDot = "/.."_ns;
+    nsACString::const_iterator start, end, offset;
+    aFragment.BeginReading(start);
+    aFragment.EndReading(end);
+    offset = end;
+    while (FindInReadable(doubleDot, start, offset)) {
+      if (offset == end || *offset == '/') {
+        return NS_ERROR_FILE_UNRECOGNIZED_PATH;
+      }
+      start = offset;
+      offset = end;
+    }
+
+    // catches the remaining cases of prefixes
+    if (StringBeginsWith(aFragment, "../"_ns)) {
+      return NS_ERROR_FILE_UNRECOGNIZED_PATH;
+    }
+  }
+
+  if (!mPath.EqualsLiteral("/")) {
+    mPath.Append('/');
+  }
+  mPath.Append(aFragment);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::Normalize() {
+  char resolved_path[PATH_MAX] = "";
+  char* resolved_path_ptr = nullptr;
+
+  if (!FilePreferences::IsAllowedPath(mPath)) {
+    return NS_ERROR_FILE_ACCESS_DENIED;
+  }
+
+  resolved_path_ptr = realpath(mPath.get(), resolved_path);
+
+  // if there is an error, the return is null.
+  if (!resolved_path_ptr) {
+    return NSRESULT_FOR_ERRNO();
+  }
+
+  mPath = resolved_path;
+  return NS_OK;
+}
+
+void nsLocalFile::LocateNativeLeafName(nsACString::const_iterator& aBegin,
+                                       nsACString::const_iterator& aEnd) {
+  // XXX perhaps we should cache this??
+
+  mPath.BeginReading(aBegin);
+  mPath.EndReading(aEnd);
+
+  nsACString::const_iterator it = aEnd;
+  nsACString::const_iterator stop = aBegin;
+  --stop;
+  while (--it != stop) {
+    if (*it == '/') {
+      aBegin = ++it;
+      return;
+    }
+  }
+  // else, the entire path is the leaf name (which means this
+  // isn't an absolute path... unexpected??)
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetNativeLeafName(nsACString& aLeafName) {
+  nsACString::const_iterator begin, end;
+  LocateNativeLeafName(begin, end);
+  aLeafName = Substring(begin, end);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::SetNativeLeafName(const nsACString& aLeafName) {
+  nsACString::const_iterator begin, end;
+  LocateNativeLeafName(begin, end);
+  mPath.Replace(begin.get() - mPath.get(), Distance(begin, end), aLeafName);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetDisplayName(nsAString& aLeafName) {
+  return GetLeafName(aLeafName);
+}
+
+nsCString nsLocalFile::NativePath() { return mPath; }
+
+nsresult nsIFile::GetNativePath(nsACString& aResult) {
+  aResult = NativePath();
+  return NS_OK;
+}
+
+nsCString nsIFile::HumanReadablePath() {
+  nsCString path;
+  DebugOnly<nsresult> rv = GetNativePath(path);
+  MOZ_ASSERT(NS_SUCCEEDED(rv));
+  return path;
+}
+
+nsresult nsLocalFile::GetNativeTargetPathName(nsIFile* aNewParent,
+                                              const nsACString& aNewName,
+                                              nsACString& aResult) {
+  nsresult rv;
+  nsCOMPtr<nsIFile> oldParent;
+
+  if (!aNewParent) {
+    if (NS_FAILED(rv = GetParent(getter_AddRefs(oldParent)))) {
+      return rv;
+    }
+    aNewParent = oldParent.get();
+  } else {
+    // check to see if our target directory exists
+    bool targetExists;
+    if (NS_FAILED(rv = aNewParent->Exists(&targetExists))) {
+      return rv;
+    }
+
+    if (!targetExists) {
+      // XXX create the new directory with some permissions
+      rv = aNewParent->Create(DIRECTORY_TYPE, 0755);
+      if (NS_FAILED(rv)) {
+        return rv;
+      }
+    } else {
+      // make sure that the target is actually a directory
+      bool targetIsDirectory;
+      if (NS_FAILED(rv = aNewParent->IsDirectory(&targetIsDirectory))) {
+        return rv;
+      }
+      if (!targetIsDirectory) {
+        return NS_ERROR_FILE_DESTINATION_NOT_DIR;
+      }
+    }
+  }
+
+  nsACString::const_iterator nameBegin, nameEnd;
+  if (!aNewName.IsEmpty()) {
+    aNewName.BeginReading(nameBegin);
+    aNewName.EndReading(nameEnd);
+  } else {
+    LocateNativeLeafName(nameBegin, nameEnd);
+  }
+
+  nsAutoCString dirName;
+  if (NS_FAILED(rv = aNewParent->GetNativePath(dirName))) {
+    return rv;
+  }
+
+  aResult = dirName + "/"_ns + Substring(nameBegin, nameEnd);
+  return NS_OK;
+}
+
+nsresult nsLocalFile::CopyDirectoryTo(nsIFile* aNewParent) {
+  nsresult rv;
+  /*
+   * dirCheck is used for various boolean test results such as from Equals,
+   * Exists, isDir, etc.
+   */
+  bool dirCheck, isSymlink;
+  uint32_t oldPerms;
+
+  if (NS_FAILED(rv = IsDirectory(&dirCheck))) {
+    return rv;
+  }
+  if (!dirCheck) {
+    return CopyToNative(aNewParent, ""_ns);
+  }
+
+  if (NS_FAILED(rv = Equals(aNewParent, &dirCheck))) {
+    return rv;
+  }
+  if (dirCheck) {
+    // can't copy dir to itself
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  if (NS_FAILED(rv = aNewParent->Exists(&dirCheck))) {
+    return rv;
+  }
+  // get the dirs old permissions
+  if (NS_FAILED(rv = GetPermissions(&oldPerms))) {
+    return rv;
+  }
+  if (!dirCheck) {
+    if (NS_FAILED(rv = aNewParent->Create(DIRECTORY_TYPE, oldPerms))) {
+      return rv;
+    }
+  } else {  // dir exists lets try to use leaf
+    nsAutoCString leafName;
+    if (NS_FAILED(rv = GetNativeLeafName(leafName))) {
+      return rv;
+    }
+    if (NS_FAILED(rv = aNewParent->AppendNative(leafName))) {
+      return rv;
+    }
+    if (NS_FAILED(rv = aNewParent->Exists(&dirCheck))) {
+      return rv;
+    }
+    if (dirCheck) {
+      return NS_ERROR_FILE_ALREADY_EXISTS;  // dest exists
+    }
+    if (NS_FAILED(rv = aNewParent->Create(DIRECTORY_TYPE, oldPerms))) {
+      return rv;
+    }
+  }
+
+  nsCOMPtr<nsIDirectoryEnumerator> dirIterator;
+  if (NS_FAILED(rv = GetDirectoryEntries(getter_AddRefs(dirIterator)))) {
+    return rv;
+  }
+
+  nsCOMPtr<nsIFile> entry;
+  while (NS_SUCCEEDED(dirIterator->GetNextFile(getter_AddRefs(entry))) &&
+         entry) {
+    if (NS_FAILED(rv = entry->IsSymlink(&isSymlink))) {
+      return rv;
+    }
+    if (NS_FAILED(rv = entry->IsDirectory(&dirCheck))) {
+      return rv;
+    }
+    if (dirCheck && !isSymlink) {
+      nsCOMPtr<nsIFile> destClone;
+      rv = aNewParent->Clone(getter_AddRefs(destClone));
+      if (NS_SUCCEEDED(rv)) {
+        if (NS_FAILED(rv = entry->CopyToNative(destClone, ""_ns))) {
+#ifdef DEBUG
+          nsresult rv2;
+          nsAutoCString pathName;
+          if (NS_FAILED(rv2 = entry->GetNativePath(pathName))) {
+            return rv2;
+          }
+          printf("Operation not supported: %s\n", pathName.get());
+#endif
+          if (rv == NS_ERROR_OUT_OF_MEMORY) {
+            return rv;
+          }
+          continue;
+        }
+      }
+    } else {
+      if (NS_FAILED(rv = entry->CopyToNative(aNewParent, ""_ns))) {
+#ifdef DEBUG
+        nsresult rv2;
+        nsAutoCString pathName;
+        if (NS_FAILED(rv2 = entry->GetNativePath(pathName))) {
+          return rv2;
+        }
+        printf("Operation not supported: %s\n", pathName.get());
+#endif
+        if (rv == NS_ERROR_OUT_OF_MEMORY) {
+          return rv;
+        }
+        continue;
+      }
+    }
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::CopyToNative(nsIFile* aNewParent, const nsACString& aNewName) {
+  nsresult rv;
+  // check to make sure that this has been initialized properly
+  CHECK_mPath();
+
+  // we copy the parent here so 'aNewParent' remains immutable
+  nsCOMPtr<nsIFile> workParent;
+  if (aNewParent) {
+    if (NS_FAILED(rv = aNewParent->Clone(getter_AddRefs(workParent)))) {
+      return rv;
+    }
+  } else {
+    if (NS_FAILED(rv = GetParent(getter_AddRefs(workParent)))) {
+      return rv;
+    }
+  }
+
+  // check to see if we are a directory or if we are a file
+  bool isDirectory;
+  if (NS_FAILED(rv = IsDirectory(&isDirectory))) {
+    return rv;
+  }
+
+  nsAutoCString newPathName;
+  if (isDirectory) {
+    if (!aNewName.IsEmpty()) {
+      if (NS_FAILED(rv = workParent->AppendNative(aNewName))) {
+        return rv;
+      }
+    } else {
+      if (NS_FAILED(rv = GetNativeLeafName(newPathName))) {
+        return rv;
+      }
+      if (NS_FAILED(rv = workParent->AppendNative(newPathName))) {
+        return rv;
+      }
+    }
+    if (NS_FAILED(rv = CopyDirectoryTo(workParent))) {
+      return rv;
+    }
+  } else {
+    rv = GetNativeTargetPathName(workParent, aNewName, newPathName);
+    if (NS_FAILED(rv)) {
+      return rv;
+    }
+
+#ifdef DEBUG_blizzard
+    printf("nsLocalFile::CopyTo() %s -> %s\n", mPath.get(), newPathName.get());
+#endif
+
+    // actually create the file.
+    auto* newFile = new nsLocalFile();
+    nsCOMPtr<nsIFile> fileRef(newFile);  // release on exit
+
+    rv = newFile->InitWithNativePath(newPathName);
+    if (NS_FAILED(rv)) {
+      return rv;
+    }
+
+    // get the old permissions
+    uint32_t myPerms = 0;
+    rv = GetPermissions(&myPerms);
+    if (NS_FAILED(rv)) {
+      return rv;
+    }
+
+    // Create the new file with the old file's permissions, even if write
+    // permission is missing.  We can't create with write permission and
+    // then change back to myPerm on all filesystems (FAT on Linux, e.g.).
+    // But we can write to a read-only file on all Unix filesystems if we
+    // open it successfully for writing.
+
+    PRFileDesc* newFD;
+    rv = newFile->CreateAndKeepOpen(
+        NORMAL_FILE_TYPE, PR_WRONLY | PR_CREATE_FILE | PR_TRUNCATE, myPerms,
+        /* aSkipAncestors = */ false, &newFD);
+    if (NS_FAILED(rv)) {
+      return rv;
+    }
+
+    // open the old file, too
+    bool specialFile;
+    if (NS_FAILED(rv = IsSpecial(&specialFile))) {
+      PR_Close(newFD);
+      return rv;
+    }
+    if (specialFile) {
+#ifdef DEBUG
+      printf("Operation not supported: %s\n", mPath.get());
+#endif
+      // make sure to clean up properly
+      PR_Close(newFD);
+      return NS_OK;
+    }
+
+#if defined(XP_MACOSX)
+    bool quarantined = true;
+    (void)HasXAttr("com.apple.quarantine"_ns, &quarantined);
+#endif
+
+    PRFileDesc* oldFD;
+    rv = OpenNSPRFileDesc(PR_RDONLY, myPerms, &oldFD);
+    if (NS_FAILED(rv)) {
+      // make sure to clean up properly
+      PR_Close(newFD);
+      return rv;
+    }
+
+#ifdef DEBUG_blizzard
+    int32_t totalRead = 0;
+    int32_t totalWritten = 0;
+#endif
+    char buf[BUFSIZ];
+    int32_t bytesRead;
+
+    // record PR_Write() error for better error message later.
+    nsresult saved_write_error = NS_OK;
+    nsresult saved_read_error = NS_OK;
+    nsresult saved_read_close_error = NS_OK;
+    nsresult saved_write_close_error = NS_OK;
+
+    // DONE: Does PR_Read() return bytesRead < 0 for error?
+    // Yes., The errors from PR_Read are not so common and
+    // the value may not have correspondence in NS_ERROR_*, but
+    // we do catch it still, immediately after while() loop.
+    // We can differentiate errors pf PR_Read and PR_Write by
+    // looking at saved_write_error value. If PR_Write error occurs (and not
+    // PR_Read() error), save_write_error is not NS_OK.
+
+    while ((bytesRead = PR_Read(oldFD, buf, BUFSIZ)) > 0) {
+#ifdef DEBUG_blizzard
+      totalRead += bytesRead;
+#endif
+
+      // PR_Write promises never to do a short write
+      int32_t bytesWritten = PR_Write(newFD, buf, bytesRead);
+      if (bytesWritten < 0) {
+        saved_write_error = NSRESULT_FOR_ERRNO();
+        bytesRead = -1;
+        break;
+      }
+      NS_ASSERTION(bytesWritten == bytesRead, "short PR_Write?");
+
+#ifdef DEBUG_blizzard
+      totalWritten += bytesWritten;
+#endif
+    }
+
+    // TODO/FIXME: If CIFS (and NFS?) may force read/write to return EINTR,
+    // we are better off to prepare for retrying. But we need confirmation if
+    // EINTR is returned.
+
+    // Record error if PR_Read() failed.
+    // Must be done before any other I/O which may reset errno.
+    if (bytesRead < 0 && saved_write_error == NS_OK) {
+      saved_read_error = NSRESULT_FOR_ERRNO();
+    }
+
+#ifdef DEBUG_blizzard
+    printf("read %d bytes, wrote %d bytes\n", totalRead, totalWritten);
+#endif
+
+    // DONE: Errors of close can occur.  Read man page of
+    // close(2);
+    // This is likely to happen if the file system is remote file
+    // system (NFS, CIFS, etc.) and network outage occurs.
+    // At least, we should tell the user that filesystem/disk is
+    // hosed (possibly due to network error, hard disk failure,
+    // etc.) so that users can take remedial action.
+
+    // close the files
+    if (PR_Close(newFD) < 0) {
+      saved_write_close_error = NSRESULT_FOR_ERRNO();
+#if DEBUG
+      // This error merits printing.
+      fprintf(stderr, "ERROR: PR_Close(newFD) returned error. errno = %d\n",
+              errno);
+#endif
+    }
+#if defined(XP_MACOSX)
+    else if (!quarantined) {
+      // If the original file was not in quarantine, lift the quarantine that
+      // file creation added because of LSFileQuarantineEnabled.
+      (void)newFile->DelXAttr("com.apple.quarantine"_ns);
+    }
+#endif  // defined(XP_MACOSX)
+
+    if (PR_Close(oldFD) < 0) {
+      saved_read_close_error = NSRESULT_FOR_ERRNO();
+#if DEBUG
+      fprintf(stderr, "ERROR: PR_Close(oldFD) returned error. errno = %d\n",
+              errno);
+#endif
+    }
+
+    // Let us report the failure to write and read.
+    // check for write/read error after cleaning up
+    if (bytesRead < 0) {
+      if (saved_write_error != NS_OK) {
+        return saved_write_error;
+      }
+      if (saved_read_error != NS_OK) {
+        return saved_read_error;
+      }
+#if DEBUG
+      MOZ_ASSERT(0);
+#endif
+    }
+
+    if (saved_write_close_error != NS_OK) {
+      return saved_write_close_error;
+    }
+    if (saved_read_close_error != NS_OK) {
+      return saved_read_close_error;
+    }
+  }
+  return rv;
+}
+
+NS_IMETHODIMP
+nsLocalFile::CopyToFollowingLinksNative(nsIFile* aNewParent,
+                                        const nsACString& aNewName) {
+  return CopyToNative(aNewParent, aNewName);
+}
+
+NS_IMETHODIMP
+nsLocalFile::MoveToNative(nsIFile* aNewParent, const nsACString& aNewName) {
+  nsresult rv;
+
+  // check to make sure that this has been initialized properly
+  CHECK_mPath();
+
+  // check to make sure that we have a new parent
+  nsAutoCString newPathName;
+  rv = GetNativeTargetPathName(aNewParent, aNewName, newPathName);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  if (!FilePreferences::IsAllowedPath(newPathName)) {
+    return NS_ERROR_FILE_ACCESS_DENIED;
+  }
+
+  // try for atomic rename, falling back to copy/delete
+  if (rename(mPath.get(), newPathName.get()) < 0) {
+    if (errno == EXDEV) {
+      rv = CopyToNative(aNewParent, aNewName);
+      if (NS_SUCCEEDED(rv)) {
+        rv = Remove(true);
+      }
+    } else {
+      rv = NSRESULT_FOR_ERRNO();
+    }
+  }
+
+  if (NS_SUCCEEDED(rv)) {
+    // Adjust this
+    mPath = newPathName;
+  }
+  return rv;
+}
+
+NS_IMETHODIMP
+nsLocalFile::MoveToFollowingLinksNative(nsIFile* aNewParent,
+                                        const nsACString& aNewName) {
+  return MoveToNative(aNewParent, aNewName);
+}
+
+NS_IMETHODIMP
+nsLocalFile::Remove(bool aRecursive, uint32_t* aRemoveCount) {
+  CHECK_mPath();
+  ENSURE_STAT_CACHE();
+
+  bool isSymLink;
+
+  nsresult rv = IsSymlink(&isSymLink);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  if (isSymLink || !S_ISDIR(mCachedStat.st_mode)) {
+    rv = NSRESULT_FOR_RETURN(unlink(mPath.get()));
+    if (NS_SUCCEEDED(rv) && aRemoveCount) {
+      *aRemoveCount += 1;
+    }
+    return rv;
+  }
+
+  if (aRecursive) {
+    auto* dir = new nsDirEnumeratorUnix();
+
+    RefPtr<nsSimpleEnumerator> dirRef(dir);  // release on exit
+
+    rv = dir->Init(this, false);
+    if (NS_FAILED(rv)) {
+      return rv;
+    }
+
+    bool more;
+    while (NS_SUCCEEDED(dir->HasMoreElements(&more)) && more) {
+      nsCOMPtr<nsISupports> item;
+      rv = dir->GetNext(getter_AddRefs(item));
+      if (NS_FAILED(rv)) {
+        return NS_ERROR_FAILURE;
+      }
+
+      nsCOMPtr<nsIFile> file = do_QueryInterface(item, &rv);
+      if (NS_FAILED(rv)) {
+        return NS_ERROR_FAILURE;
+      }
+      // XXX: We care the result of the removal here while
+      // nsLocalFileWin does not. We should align the behavior. (bug 1779696)
+      rv = file->Remove(aRecursive, aRemoveCount);
+
+#ifdef ANDROID
+      // See bug 580434 - Bionic gives us just deleted files
+      if (rv == NS_ERROR_FILE_NOT_FOUND) {
+        continue;
+      }
+#endif
+      if (NS_FAILED(rv)) {
+        return rv;
+      }
+    }
+  }
+
+  rv = NSRESULT_FOR_RETURN(rmdir(mPath.get()));
+  if (NS_SUCCEEDED(rv) && aRemoveCount) {
+    *aRemoveCount += 1;
+  }
+  return rv;
+}
+
+nsresult nsLocalFile::GetTimeImpl(PRTime* aTime,
+                                  nsLocalFile::TimeField aTimeField,
+                                  bool aFollowLinks) {
+  CHECK_mPath();
+  if (NS_WARN_IF(!aTime)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  using StatFn = int (*)(const char*, struct STAT*);
+  StatFn statFn = aFollowLinks ? &STAT : &LSTAT;
+
+  struct STAT fileStats {};
+  if (statFn(mPath.get(), &fileStats) < 0) {
+    return NSRESULT_FOR_ERRNO();
+  }
+
+  struct timespec* timespec;
+  switch (aTimeField) {
+    case TimeField::AccessedTime:
+#if (defined(__APPLE__) && defined(__MACH__))
+      timespec = &fileStats.st_atimespec;
+#else
+      timespec = &fileStats.st_atim;
+#endif
+      break;
+
+    case TimeField::ModifiedTime:
+#if (defined(__APPLE__) && defined(__MACH__))
+      timespec = &fileStats.st_mtimespec;
+#else
+      timespec = &fileStats.st_mtim;
+#endif
+      break;
+
+    default:
+      MOZ_CRASH("Unknown TimeField");
+  }
+
+  *aTime = TimespecToMillis(*timespec);
+
+  return NS_OK;
+}
+
+nsresult nsLocalFile::SetTimeImpl(PRTime aTime,
+                                  nsLocalFile::TimeField aTimeField,
+                                  bool aFollowLinks) {
+  CHECK_mPath();
+
+  using UtimesFn = int (*)(const char*, const timeval*);
+  UtimesFn utimesFn = &utimes;
+
+#if HAVE_LUTIMES
+  if (!aFollowLinks) {
+    utimesFn = &lutimes;
+  }
+#endif
+
+  ENSURE_STAT_CACHE();
+
+  if (aTime == 0) {
+    aTime = PR_Now();
+  }
+
+  // We only want to write to a single field (accessed time or modified time),
+  // but utimes() doesn't let you omit one. If you do, it will set that field to
+  // the current time, which is not what we want.
+  //
+  // So what we do is write to both fields, but copy one of the fields from our
+  // cached stat structure.
+  //
+  // If we are writing to the accessed time field, then we want to copy the
+  // modified time and vice versa.
+
+  timeval times[2];
+
+  const size_t writeIndex = aTimeField == TimeField::AccessedTime ? 0 : 1;
+  const size_t copyIndex = aTimeField == TimeField::AccessedTime ? 1 : 0;
+
+#if (defined(__APPLE__) && defined(__MACH__))
+  auto* copyFrom = aTimeField == TimeField::AccessedTime
+                       ? &mCachedStat.st_mtimespec
+                       : &mCachedStat.st_atimespec;
+#else
+  auto* copyFrom = aTimeField == TimeField::AccessedTime ? &mCachedStat.st_mtim
+                                                         : &mCachedStat.st_atim;
+#endif
+
+  times[copyIndex].tv_sec = copyFrom->tv_sec;
+  times[copyIndex].tv_usec = copyFrom->tv_nsec / 1000;
+
+  times[writeIndex].tv_sec = aTime / PR_MSEC_PER_SEC;
+  times[writeIndex].tv_usec = (aTime % PR_MSEC_PER_SEC) * PR_USEC_PER_MSEC;
+
+  int result = utimesFn(mPath.get(), times);
+  return NSRESULT_FOR_RETURN(result);
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetLastAccessedTime(PRTime* aLastAccessedTime) {
+  return GetTimeImpl(aLastAccessedTime, TimeField::AccessedTime,
+                     /* follow links? */ true);
+}
+
+NS_IMETHODIMP
+nsLocalFile::SetLastAccessedTime(PRTime aLastAccessedTime) {
+  return SetTimeImpl(aLastAccessedTime, TimeField::AccessedTime,
+                     /* follow links? */ true);
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetLastAccessedTimeOfLink(PRTime* aLastAccessedTime) {
+  return GetTimeImpl(aLastAccessedTime, TimeField::AccessedTime,
+                     /* follow links? */ false);
+}
+
+NS_IMETHODIMP
+nsLocalFile::SetLastAccessedTimeOfLink(PRTime aLastAccessedTime) {
+  return SetTimeImpl(aLastAccessedTime, TimeField::AccessedTime,
+                     /* follow links? */ false);
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetLastModifiedTime(PRTime* aLastModTime) {
+  return GetTimeImpl(aLastModTime, TimeField::ModifiedTime,
+                     /* follow links? */ true);
+}
+
+NS_IMETHODIMP
+nsLocalFile::SetLastModifiedTime(PRTime aLastModTime) {
+  return SetTimeImpl(aLastModTime, TimeField::ModifiedTime,
+                     /* follow links ? */ true);
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetLastModifiedTimeOfLink(PRTime* aLastModTimeOfLink) {
+  return GetTimeImpl(aLastModTimeOfLink, TimeField::ModifiedTime,
+                     /* follow link? */ false);
+}
+
+NS_IMETHODIMP
+nsLocalFile::SetLastModifiedTimeOfLink(PRTime aLastModTimeOfLink) {
+  return SetTimeImpl(aLastModTimeOfLink, TimeField::ModifiedTime,
+                     /* follow links? */ false);
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetCreationTime(PRTime* aCreationTime) {
+  return GetCreationTimeImpl(aCreationTime, false);
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetCreationTimeOfLink(PRTime* aCreationTimeOfLink) {
+  return GetCreationTimeImpl(aCreationTimeOfLink, /* aFollowLinks = */ true);
+}
+
+nsresult nsLocalFile::GetCreationTimeImpl(PRTime* aCreationTime,
+                                          bool aFollowLinks) {
+  CHECK_mPath();
+  if (NS_WARN_IF(!aCreationTime)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+#if defined(_DARWIN_FEATURE_64_BIT_INODE)
+  using StatFn = int (*)(const char*, struct STAT*);
+  StatFn statFn = aFollowLinks ? &STAT : &LSTAT;
+
+  struct STAT fileStats {};
+  if (statFn(mPath.get(), &fileStats) < 0) {
+    return NSRESULT_FOR_ERRNO();
+  }
+
+  *aCreationTime = TimespecToMillis(fileStats.st_birthtimespec);
+  return NS_OK;
+#else
+  return NS_ERROR_NOT_IMPLEMENTED;
+#endif
+}
+
+/*
+ * Only send back permissions bits: maybe we want to send back the whole
+ * mode_t to permit checks against other file types?
+ */
+
+#define NORMALIZE_PERMS(mode) ((mode) & (S_IRWXU | S_IRWXG | S_IRWXO))
+
+NS_IMETHODIMP
+nsLocalFile::GetPermissions(uint32_t* aPermissions) {
+  if (NS_WARN_IF(!aPermissions)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  ENSURE_STAT_CACHE();
+  *aPermissions = NORMALIZE_PERMS(mCachedStat.st_mode);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetPermissionsOfLink(uint32_t* aPermissionsOfLink) {
+  CHECK_mPath();
+  if (NS_WARN_IF(!aPermissionsOfLink)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  struct STAT sbuf;
+  if (LSTAT(mPath.get(), &sbuf) == -1) {
+    return NSRESULT_FOR_ERRNO();
+  }
+  *aPermissionsOfLink = NORMALIZE_PERMS(sbuf.st_mode);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::SetPermissions(uint32_t aPermissions) {
+  CHECK_mPath();
+
+  /*
+   * Race condition here: we should use fchmod instead, there's no way to
+   * guarantee the name still refers to the same file.
+   */
+  if (chmod(mPath.get(), aPermissions) >= 0) {
+    return NS_OK;
+  }
+#if defined(ANDROID) && defined(STATFS)
+  // For the time being, this is restricted for use by Android, but we
+  // will figure out what to do for all platforms in bug 638503
+  struct STATFS sfs;
+  if (STATFS(mPath.get(), &sfs) < 0) {
+    return NSRESULT_FOR_ERRNO();
+  }
+
+  // if this is a FAT file system we can't set file permissions
+  if (sfs.f_type == MSDOS_SUPER_MAGIC) {
+    return NS_OK;
+  }
+#endif
+  return NSRESULT_FOR_ERRNO();
+}
+
+NS_IMETHODIMP
+nsLocalFile::SetPermissionsOfLink(uint32_t aPermissions) {
+  // There isn't a consistent mechanism for doing this on UNIX platforms. We
+  // might want to carefully implement this in the future though.
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetFileSize(int64_t* aFileSize) {
+  if (NS_WARN_IF(!aFileSize)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  *aFileSize = 0;
+  ENSURE_STAT_CACHE();
+
+  if (!S_ISDIR(mCachedStat.st_mode)) {
+    *aFileSize = (int64_t)mCachedStat.st_size;
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::SetFileSize(int64_t aFileSize) {
+  CHECK_mPath();
+
+#if defined(ANDROID)
+  /* no truncate on bionic */
+  int fd = open(mPath.get(), O_WRONLY);
+  if (fd == -1) {
+    return NSRESULT_FOR_ERRNO();
+  }
+
+  int ret = ftruncate(fd, (off_t)aFileSize);
+  close(fd);
+
+  if (ret == -1) {
+    return NSRESULT_FOR_ERRNO();
+  }
+#elif defined(HAVE_TRUNCATE64)
+  if (truncate64(mPath.get(), (off64_t)aFileSize) == -1) {
+    return NSRESULT_FOR_ERRNO();
+  }
+#else
+  off_t size = (off_t)aFileSize;
+  if (truncate(mPath.get(), size) == -1) {
+    return NSRESULT_FOR_ERRNO();
+  }
+#endif
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetFileSizeOfLink(int64_t* aFileSize) {
+  CHECK_mPath();
+  if (NS_WARN_IF(!aFileSize)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  struct STAT sbuf;
+  if (LSTAT(mPath.get(), &sbuf) == -1) {
+    return NSRESULT_FOR_ERRNO();
+  }
+
+  *aFileSize = (int64_t)sbuf.st_size;
+  return NS_OK;
+}
+
+#if defined(USE_LINUX_QUOTACTL)
+/*
+ * Searches /proc/self/mountinfo for given device (Major:Minor),
+ * returns exported name from /dev
+ *
+ * Fails when /proc/self/mountinfo or diven device don't exist.
+ */
+static bool GetDeviceName(unsigned int aDeviceMajor, unsigned int aDeviceMinor,
+                          nsACString& aDeviceName) {
+  bool ret = false;
+
+  const int kMountInfoLineLength = 200;
+  const int kMountInfoDevPosition = 6;
+
+  char mountinfoLine[kMountInfoLineLength];
+  char deviceNum[kMountInfoLineLength];
+
+  SprintfLiteral(deviceNum, "%u:%u", aDeviceMajor, aDeviceMinor);
+
+  FILE* f = fopen("/proc/self/mountinfo", "rt");
+  if (!f) {
+    return ret;
+  }
+
+  // Expects /proc/self/mountinfo in format:
+  // 'ID ID major:minor root mountpoint flags - type devicename flags'
+  while (fgets(mountinfoLine, kMountInfoLineLength, f)) {
+    char* p_dev = strstr(mountinfoLine, deviceNum);
+
+    for (int i = 0; i < kMountInfoDevPosition && p_dev; ++i) {
+      p_dev = strchr(p_dev, ' ');
+      if (p_dev) {
+        p_dev++;
+      }
+    }
+
+    if (p_dev) {
+      char* p_dev_end = strchr(p_dev, ' ');
+      if (p_dev_end) {
+        *p_dev_end = '\0';
+        aDeviceName.Assign(p_dev);
+        ret = true;
+        break;
+      }
+    }
+  }
+
+  fclose(f);
+  return ret;
+}
+#endif
+
+#if defined(USE_LINUX_QUOTACTL)
+template <typename StatInfoFunc, typename QuotaInfoFunc>
+nsresult nsLocalFile::GetDiskInfo(StatInfoFunc&& aStatInfoFunc,
+                                  QuotaInfoFunc&& aQuotaInfoFunc,
+                                  int64_t* aResult)
+#else
+template <typename StatInfoFunc>
+nsresult nsLocalFile::GetDiskInfo(StatInfoFunc&& aStatInfoFunc,
+                                  int64_t* aResult)
+#endif
+{
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  // These systems have the operations necessary to check disk space.
+
+#ifdef STATFS
+
+  // check to make sure that mPath is properly initialized
+  CHECK_mPath();
+
+  struct STATFS fs_buf;
+
+  /*
+   * Members of the STATFS struct that you should know about:
+   * F_BSIZE = block size on disk.
+   * f_bavail = number of free blocks available to a non-superuser.
+   * f_bfree = number of total free blocks in file system.
+   * f_blocks = number of total used or free blocks in file system.
+   */
+
+  if (STATFS(mPath.get(), &fs_buf) < 0) {
+    // The call to STATFS failed.
+#  ifdef DEBUG
+    printf("ERROR: GetDiskInfo: STATFS call FAILED. \n");
+#  endif
+    return NS_ERROR_FAILURE;
+  }
+
+  CheckedInt64 statfsResult = std::forward<StatInfoFunc>(aStatInfoFunc)(fs_buf);
+  if (!statfsResult.isValid()) {
+    return NS_ERROR_CANNOT_CONVERT_DATA;
+  }
+
+  // Assign statfsResult to *aResult in case one of the quota calls fails.
+  *aResult = statfsResult.value();
+
+#  if defined(USE_LINUX_QUOTACTL)
+
+  if (!FillStatCache()) {
+    // Returns info from statfs
+    return NS_OK;
+  }
+
+  nsAutoCString deviceName;
+  if (!GetDeviceName(major(mCachedStat.st_dev), minor(mCachedStat.st_dev),
+                     deviceName)) {
+    // Returns info from statfs
+    return NS_OK;
+  }
+
+  struct dqblk dq;
+  if (!quotactl(QCMD(Q_GETQUOTA, USRQUOTA), deviceName.get(), getuid(),
+                (caddr_t)&dq)
+#    ifdef QIF_BLIMITS
+      && dq.dqb_valid & QIF_BLIMITS
+#    endif
+      && dq.dqb_bhardlimit) {
+    CheckedInt64 quotaResult = std::forward<QuotaInfoFunc>(aQuotaInfoFunc)(dq);
+    if (!quotaResult.isValid()) {
+      // Returns info from statfs
+      return NS_OK;
+    }
+
+    if (quotaResult.value() < *aResult) {
+      *aResult = quotaResult.value();
+    }
+  }
+#  endif  // defined(USE_LINUX_QUOTACTL)
+
+#  ifdef DEBUG_DISK_SPACE
+  printf("DiskInfo: %lu bytes\n", *aResult);
+#  endif
+
+  return NS_OK;
+
+#else  // STATFS
+  /*
+   * This platform doesn't have statfs or statvfs.  I'm sure that there's
+   * a way to check for free disk space and disk capacity on platforms that
+   * don't have statfs (I'm SURE they have df, for example).
+   *
+   * Until we figure out how to do that, lets be honest and say that this
+   * command isn't implemented properly for these platforms yet.
+   */
+#  ifdef DEBUG
+  printf("ERROR: GetDiskInfo: Not implemented for plaforms without statfs.\n");
+#  endif
+  return NS_ERROR_NOT_IMPLEMENTED;
+
+#endif  // STATFS
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetDiskSpaceAvailable(int64_t* aDiskSpaceAvailable) {
+  return GetDiskInfo(
+      [](const struct STATFS& aStatInfo) {
+        return aStatInfo.f_bavail * static_cast<uint64_t>(aStatInfo.F_BSIZE);
+      },
+#if defined(USE_LINUX_QUOTACTL)
+      [](const struct dqblk& aQuotaInfo) -> uint64_t {
+        // dqb_bhardlimit is count of BLOCK_SIZE blocks, dqb_curspace is bytes
+        const uint64_t hardlimit = aQuotaInfo.dqb_bhardlimit * BLOCK_SIZE;
+        if (hardlimit > aQuotaInfo.dqb_curspace) {
+          return hardlimit - aQuotaInfo.dqb_curspace;
+        }
+        return 0;
+      },
+#endif
+      aDiskSpaceAvailable);
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetDiskCapacity(int64_t* aDiskCapacity) {
+  return GetDiskInfo(
+      [](const struct STATFS& aStatInfo) {
+        return aStatInfo.f_blocks * static_cast<uint64_t>(aStatInfo.F_BSIZE);
+      },
+#if defined(USE_LINUX_QUOTACTL)
+      [](const struct dqblk& aQuotaInfo) {
+        // dqb_bhardlimit is count of BLOCK_SIZE blocks
+        return aQuotaInfo.dqb_bhardlimit * BLOCK_SIZE;
+      },
+#endif
+      aDiskCapacity);
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetParent(nsIFile** aParent) {
+  CHECK_mPath();
+  if (NS_WARN_IF(!aParent)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  *aParent = nullptr;
+
+  // if '/' we are at the top of the volume, return null
+  if (mPath.EqualsLiteral("/")) {
+    return NS_OK;
+  }
+
+  // <brendan, after jband> I promise to play nice
+  char* buffer = mPath.BeginWriting();
+  // find the last significant slash in buffer
+  char* slashp = strrchr(buffer, '/');
+  NS_ASSERTION(slashp, "non-canonical path?");
+  if (!slashp) {
+    return NS_ERROR_FILE_INVALID_PATH;
+  }
+
+  // for the case where we are at '/'
+  if (slashp == buffer) {
+    slashp++;
+  }
+
+  // temporarily terminate buffer at the last significant slash
+  char c = *slashp;
+  *slashp = '\0';
+
+  nsCOMPtr<nsIFile> localFile;
+  nsresult rv = NS_NewNativeLocalFile(nsDependentCString(buffer), true,
+                                      getter_AddRefs(localFile));
+
+  // make buffer whole again
+  *slashp = c;
+
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  localFile.forget(aParent);
+  return NS_OK;
+}
+
+/*
+ * The results of Exists, isWritable and isReadable are not cached.
+ */
+
+NS_IMETHODIMP
+nsLocalFile::Exists(bool* aResult) {
+  CHECK_mPath();
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  *aResult = (access(mPath.get(), F_OK) == 0);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::IsWritable(bool* aResult) {
+  CHECK_mPath();
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  *aResult = (access(mPath.get(), W_OK) == 0);
+  if (*aResult || errno == EACCES) {
+    return NS_OK;
+  }
+  return NSRESULT_FOR_ERRNO();
+}
+
+NS_IMETHODIMP
+nsLocalFile::IsReadable(bool* aResult) {
+  CHECK_mPath();
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  *aResult = (access(mPath.get(), R_OK) == 0);
+  if (*aResult || errno == EACCES) {
+    return NS_OK;
+  }
+  return NSRESULT_FOR_ERRNO();
+}
+
+NS_IMETHODIMP
+nsLocalFile::IsExecutable(bool* aResult) {
+  CHECK_mPath();
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  // Check extension (bug 663899). On certain platforms, the file
+  // extension may cause the OS to treat it as executable regardless of
+  // the execute bit, such as .jar on Mac OS X. We borrow the code from
+  // nsLocalFileWin, slightly modified.
+
+  // Don't be fooled by symlinks.
+  bool symLink;
+  nsresult rv = IsSymlink(&symLink);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  nsAutoString path;
+  if (symLink) {
+    GetTarget(path);
+  } else {
+    GetPath(path);
+  }
+
+  int32_t dotIdx = path.RFindChar(char16_t('.'));
+  if (dotIdx != kNotFound) {
+    // Convert extension to lower case.
+    char16_t* p = path.BeginWriting();
+    for (p += dotIdx + 1; *p; ++p) {
+      *p += (*p >= L'A' && *p <= L'Z') ? 'a' - 'A' : 0;
+    }
+
+    // Search for any of the set of executable extensions.
+    static const char* const executableExts[] = {
+#ifdef MOZ_WIDGET_COCOA
+        "afploc",  // Can point to other files.
+#endif
+        "air",  // Adobe AIR installer
+#ifdef MOZ_WIDGET_COCOA
+        "atloc",    // Can point to other files.
+        "fileloc",  // File location files can be used to point to other
+                    // files.
+        "ftploc",   // Can point to other files.
+        "inetloc",  // Shouldn't be able to do the same, but can, due to
+                    // macOS vulnerabilities.
+#endif
+        "jar"  // java application bundle
+    };
+    nsDependentSubstring ext = Substring(path, dotIdx + 1);
+    for (auto executableExt : executableExts) {
+      if (ext.EqualsASCII(executableExt)) {
+        // Found a match.  Set result and quit.
+        *aResult = true;
+        return NS_OK;
+      }
+    }
+  }
+
+  // On OS X, then query Launch Services.
+#ifdef MOZ_WIDGET_COCOA
+  // Certain Mac applications, such as Classic applications, which
+  // run under Rosetta, might not have the +x mode bit but are still
+  // considered to be executable by Launch Services (bug 646748).
+  CFURLRef url;
+  if (NS_FAILED(GetCFURL(&url))) {
+    return NS_ERROR_FAILURE;
+  }
+
+  LSRequestedInfo theInfoRequest = kLSRequestAllInfo;
+  LSItemInfoRecord theInfo;
+  OSStatus result = ::LSCopyItemInfoForURL(url, theInfoRequest, &theInfo);
+  ::CFRelease(url);
+  if (result == noErr) {
+    if ((theInfo.flags & kLSItemInfoIsApplication) != 0) {
+      *aResult = true;
+      return NS_OK;
+    }
+  }
+#endif
+
+  // Then check the execute bit.
+  *aResult = (access(mPath.get(), X_OK) == 0);
+#ifdef SOLARIS
+  // On Solaris, access will always return 0 for root user, however
+  // the file is only executable if S_IXUSR | S_IXGRP | S_IXOTH is set.
+  // See bug 351950, https://bugzilla.mozilla.org/show_bug.cgi?id=351950
+  if (*aResult) {
+    struct STAT buf;
+
+    *aResult = (STAT(mPath.get(), &buf) == 0);
+    if (*aResult || errno == EACCES) {
+      *aResult = *aResult && (buf.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH));
+      return NS_OK;
+    }
+
+    return NSRESULT_FOR_ERRNO();
+  }
+#endif
+  if (*aResult || errno == EACCES) {
+    return NS_OK;
+  }
+  return NSRESULT_FOR_ERRNO();
+}
+
+NS_IMETHODIMP
+nsLocalFile::IsDirectory(bool* aResult) {
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  *aResult = false;
+  ENSURE_STAT_CACHE();
+  *aResult = S_ISDIR(mCachedStat.st_mode);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::IsFile(bool* aResult) {
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  *aResult = false;
+  ENSURE_STAT_CACHE();
+  *aResult = S_ISREG(mCachedStat.st_mode);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::IsHidden(bool* aResult) {
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  nsACString::const_iterator begin, end;
+  LocateNativeLeafName(begin, end);
+  *aResult = (*begin == '.');
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::IsSymlink(bool* aResult) {
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  CHECK_mPath();
+
+  struct STAT symStat;
+  if (LSTAT(mPath.get(), &symStat) == -1) {
+    return NSRESULT_FOR_ERRNO();
+  }
+  *aResult = S_ISLNK(symStat.st_mode);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::IsSpecial(bool* aResult) {
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  ENSURE_STAT_CACHE();
+  *aResult = S_ISCHR(mCachedStat.st_mode) || S_ISBLK(mCachedStat.st_mode) ||
+#ifdef S_ISSOCK
+             S_ISSOCK(mCachedStat.st_mode) ||
+#endif
+             S_ISFIFO(mCachedStat.st_mode);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::Equals(nsIFile* aInFile, bool* aResult) {
+  if (NS_WARN_IF(!aInFile)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  *aResult = false;
+
+  nsAutoCString inPath;
+  nsresult rv = aInFile->GetNativePath(inPath);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  // We don't need to worry about "/foo/" vs. "/foo" here
+  // because trailing slashes are stripped on init.
+  *aResult = !strcmp(inPath.get(), mPath.get());
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::Contains(nsIFile* aInFile, bool* aResult) {
+  CHECK_mPath();
+  if (NS_WARN_IF(!aInFile)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  nsAutoCString inPath;
+  nsresult rv;
+
+  if (NS_FAILED(rv = aInFile->GetNativePath(inPath))) {
+    return rv;
+  }
+
+  *aResult = false;
+
+  ssize_t len = mPath.Length();
+  if (strncmp(mPath.get(), inPath.get(), len) == 0) {
+    // Now make sure that the |aInFile|'s path has a separator at len,
+    // which implies that it has more components after len.
+    if (inPath[len] == '/') {
+      *aResult = true;
+    }
+  }
+
+  return NS_OK;
+}
+
+static nsresult ReadLinkSafe(const nsCString& aTarget, int32_t aExpectedSize,
+                             nsACString& aOutBuffer) {
+  // If we call readlink with a buffer size S it returns S, then we cannot tell
+  // if the buffer was big enough to hold the entire path. We allocate an
+  // additional byte so we can check if the buffer was large enough.
+  const auto allocSize = CheckedInt<size_t>(aExpectedSize) + 1;
+  if (!allocSize.isValid()) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  auto result = aOutBuffer.BulkWrite(allocSize.value(), 0, false);
+  if (result.isErr()) {
+    return result.unwrapErr();
+  }
+
+  auto handle = result.unwrap();
+
+  while (true) {
+    ssize_t bytesWritten =
+        readlink(aTarget.get(), handle.Elements(), handle.Length());
+    if (bytesWritten < 0) {
+      return NSRESULT_FOR_ERRNO();
+    }
+
+    // written >= 0 so it is safe to cast to size_t.
+    if ((size_t)bytesWritten < handle.Length()) {
+      // Target might have changed since the lstat call, or lstat might lie, see
+      // bug 1791029.
+      handle.Finish(bytesWritten, false);
+      return NS_OK;
+    }
+
+    // The buffer was not large enough, so double it and try again.
+    auto restartResult = handle.RestartBulkWrite(handle.Length() * 2, 0, false);
+    if (restartResult.isErr()) {
+      return restartResult.unwrapErr();
+    }
+  }
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetNativeTarget(nsACString& aResult) {
+  CHECK_mPath();
+  aResult.Truncate();
+
+  struct STAT symStat;
+  if (LSTAT(mPath.get(), &symStat) == -1) {
+    return NSRESULT_FOR_ERRNO();
+  }
+
+  if (!S_ISLNK(symStat.st_mode)) {
+    return NS_ERROR_FILE_INVALID_PATH;
+  }
+
+  nsAutoCString target;
+  nsresult rv = ReadLinkSafe(mPath, symStat.st_size, target);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  nsCOMPtr<nsIFile> self(this);
+  int32_t maxLinks = 40;
+  while (true) {
+    if (maxLinks-- == 0) {
+      rv = NS_ERROR_FILE_UNRESOLVABLE_SYMLINK;
+      break;
+    }
+
+    if (target[0] != '/') {
+      nsCOMPtr<nsIFile> parent;
+      if (NS_FAILED(rv = self->GetParent(getter_AddRefs(parent)))) {
+        break;
+      }
+      if (NS_FAILED(rv = parent->AppendRelativeNativePath(target))) {
+        break;
+      }
+      if (NS_FAILED(rv = parent->GetNativePath(aResult))) {
+        break;
+      }
+      self = parent;
+    } else {
+      aResult = target;
+    }
+
+    const nsPromiseFlatCString& flatRetval = PromiseFlatCString(aResult);
+
+    // Any failure in testing the current target we'll just interpret
+    // as having reached our destiny.
+    if (LSTAT(flatRetval.get(), &symStat) == -1) {
+      break;
+    }
+
+    // And of course we're done if it isn't a symlink.
+    if (!S_ISLNK(symStat.st_mode)) {
+      break;
+    }
+
+    nsAutoCString newTarget;
+    rv = ReadLinkSafe(flatRetval, symStat.st_size, newTarget);
+    if (NS_FAILED(rv)) {
+      break;
+    }
+
+    target = newTarget;
+  }
+
+  if (NS_FAILED(rv)) {
+    aResult.Truncate();
+  }
+  return rv;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetDirectoryEntriesImpl(nsIDirectoryEnumerator** aEntries) {
+  RefPtr<nsDirEnumeratorUnix> dir = new nsDirEnumeratorUnix();
+
+  nsresult rv = dir->Init(this, false);
+  if (NS_FAILED(rv)) {
+    *aEntries = nullptr;
+  } else {
+    dir.forget(aEntries);
+  }
+
+  return rv;
+}
+
+NS_IMETHODIMP
+nsLocalFile::Load(PRLibrary** aResult) {
+  CHECK_mPath();
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+#ifdef NS_BUILD_REFCNT_LOGGING
+  nsTraceRefcnt::SetActivityIsLegal(false);
+#endif
+
+  *aResult = PR_LoadLibrary(mPath.get());
+
+#ifdef NS_BUILD_REFCNT_LOGGING
+  nsTraceRefcnt::SetActivityIsLegal(true);
+#endif
+
+  if (!*aResult) {
+    return NS_ERROR_FAILURE;
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetPersistentDescriptor(nsACString& aPersistentDescriptor) {
+  return GetNativePath(aPersistentDescriptor);
+}
+
+NS_IMETHODIMP
+nsLocalFile::SetPersistentDescriptor(const nsACString& aPersistentDescriptor) {
+#ifdef MOZ_WIDGET_COCOA
+  if (aPersistentDescriptor.IsEmpty()) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  // Support pathnames as user-supplied descriptors if they begin with '/'
+  // or '~'.  These characters do not collide with the base64 set used for
+  // encoding alias records.
+  char first = aPersistentDescriptor.First();
+  if (first == '/' || first == '~') {
+    return InitWithNativePath(aPersistentDescriptor);
+  }
+
+  uint32_t dataSize = aPersistentDescriptor.Length();
+  char* decodedData = PL_Base64Decode(
+      PromiseFlatCString(aPersistentDescriptor).get(), dataSize, nullptr);
+  if (!decodedData) {
+    NS_ERROR("SetPersistentDescriptor was given bad data");
+    return NS_ERROR_FAILURE;
+  }
+
+  // Cast to an alias record and resolve.
+  AliasRecord aliasHeader = *(AliasPtr)decodedData;
+  int32_t aliasSize = ::GetAliasSizeFromPtr(&aliasHeader);
+  if (aliasSize >
+      ((int32_t)dataSize * 3) / 4) {  // be paranoid about having too few data
+    PR_Free(decodedData);             // PL_Base64Decode() uses PR_Malloc().
+    return NS_ERROR_FAILURE;
+  }
+
+  nsresult rv = NS_OK;
+
+  // Move the now-decoded data into the Handle.
+  // The size of the decoded data is 3/4 the size of the encoded data. See
+  // plbase64.h
+  Handle newHandle = nullptr;
+  if (::PtrToHand(decodedData, &newHandle, aliasSize) != noErr) {
+    rv = NS_ERROR_OUT_OF_MEMORY;
+  }
+  PR_Free(decodedData);  // PL_Base64Decode() uses PR_Malloc().
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  Boolean changed;
+  FSRef resolvedFSRef;
+  OSErr err = ::FSResolveAlias(nullptr, (AliasHandle)newHandle, &resolvedFSRef,
+                               &changed);
+
+  rv = MacErrorMapper(err);
+  DisposeHandle(newHandle);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  return InitWithFSRef(&resolvedFSRef);
+#else
+  return InitWithNativePath(aPersistentDescriptor);
+#endif
+}
+
+NS_IMETHODIMP
+nsLocalFile::Reveal() {
+  if (!FilePreferences::IsAllowedPath(mPath)) {
+    return NS_ERROR_FILE_ACCESS_DENIED;
+  }
+
+#ifdef MOZ_WIDGET_GTK
+  nsCOMPtr<nsIGIOService> giovfs = do_GetService(NS_GIOSERVICE_CONTRACTID);
+  if (!giovfs) {
+    return NS_ERROR_FAILURE;
+  }
+  return giovfs->RevealFile(this);
+#elif defined(MOZ_WIDGET_COCOA)
+  CFURLRef url;
+  if (NS_SUCCEEDED(GetCFURL(&url))) {
+    nsresult rv = CocoaFileUtils::RevealFileInFinder(url);
+    ::CFRelease(url);
+    return rv;
+  }
+  return NS_ERROR_FAILURE;
+#else
+  return NS_ERROR_FAILURE;
+#endif
+}
+
+NS_IMETHODIMP
+nsLocalFile::Launch() {
+  if (!FilePreferences::IsAllowedPath(mPath)) {
+    return NS_ERROR_FILE_ACCESS_DENIED;
+  }
+
+#ifdef MOZ_WIDGET_GTK
+  nsCOMPtr<nsIGIOService> giovfs = do_GetService(NS_GIOSERVICE_CONTRACTID);
+  if (!giovfs) {
+    return NS_ERROR_FAILURE;
+  }
+
+  return giovfs->LaunchFile(mPath);
+#elif defined(MOZ_WIDGET_ANDROID)
+  // Not supported on GeckoView
+  return NS_ERROR_NOT_IMPLEMENTED;
+#elif defined(MOZ_WIDGET_COCOA)
+  CFURLRef url;
+  if (NS_SUCCEEDED(GetCFURL(&url))) {
+    nsresult rv = CocoaFileUtils::OpenURL(url);
+    ::CFRelease(url);
+    return rv;
+  }
+  return NS_ERROR_FAILURE;
+#else
+  return NS_ERROR_FAILURE;
+#endif
+}
+
+nsresult NS_NewNativeLocalFile(const nsACString& aPath, bool aFollowSymlinks,
+                               nsIFile** aResult) {
+  RefPtr<nsLocalFile> file = new nsLocalFile();
+
+  if (!aPath.IsEmpty()) {
+    nsresult rv = file->InitWithNativePath(aPath);
+    if (NS_FAILED(rv)) {
+      return rv;
+    }
+  }
+  file.forget(aResult);
+  return NS_OK;
+}
+
+//-----------------------------------------------------------------------------
+// unicode support
+//-----------------------------------------------------------------------------
+
+#define SET_UCS(func, ucsArg)                          \
+  {                                                    \
+    nsAutoCString buf;                                 \
+    nsresult rv = NS_CopyUnicodeToNative(ucsArg, buf); \
+    if (NS_FAILED(rv)) return rv;                      \
+    return (func)(buf);                                \
+  }
+
+#define GET_UCS(func, ucsArg)                   \
+  {                                             \
+    nsAutoCString buf;                          \
+    nsresult rv = (func)(buf);                  \
+    if (NS_FAILED(rv)) return rv;               \
+    return NS_CopyNativeToUnicode(buf, ucsArg); \
+  }
+
+#define SET_UCS_2ARGS_2(func, opaqueArg, ucsArg)       \
+  {                                                    \
+    nsAutoCString buf;                                 \
+    nsresult rv = NS_CopyUnicodeToNative(ucsArg, buf); \
+    if (NS_FAILED(rv)) return rv;                      \
+    return (func)(opaqueArg, buf);                     \
+  }
+
+// Unicode interface Wrapper
+nsresult nsLocalFile::InitWithPath(const nsAString& aFilePath) {
+  SET_UCS(InitWithNativePath, aFilePath);
+}
+nsresult nsLocalFile::Append(const nsAString& aNode) {
+  SET_UCS(AppendNative, aNode);
+}
+nsresult nsLocalFile::AppendRelativePath(const nsAString& aNode) {
+  SET_UCS(AppendRelativeNativePath, aNode);
+}
+nsresult nsLocalFile::GetLeafName(nsAString& aLeafName) {
+  GET_UCS(GetNativeLeafName, aLeafName);
+}
+nsresult nsLocalFile::SetLeafName(const nsAString& aLeafName) {
+  SET_UCS(SetNativeLeafName, aLeafName);
+}
+nsresult nsLocalFile::GetPath(nsAString& aResult) {
+  return NS_CopyNativeToUnicode(mPath, aResult);
+}
+nsresult nsLocalFile::CopyTo(nsIFile* aNewParentDir,
+                             const nsAString& aNewName) {
+  SET_UCS_2ARGS_2(CopyToNative, aNewParentDir, aNewName);
+}
+nsresult nsLocalFile::CopyToFollowingLinks(nsIFile* aNewParentDir,
+                                           const nsAString& aNewName) {
+  SET_UCS_2ARGS_2(CopyToFollowingLinksNative, aNewParentDir, aNewName);
+}
+nsresult nsLocalFile::MoveTo(nsIFile* aNewParentDir,
+                             const nsAString& aNewName) {
+  SET_UCS_2ARGS_2(MoveToNative, aNewParentDir, aNewName);
+}
+NS_IMETHODIMP
+nsLocalFile::MoveToFollowingLinks(nsIFile* aNewParentDir,
+                                  const nsAString& aNewName) {
+  SET_UCS_2ARGS_2(MoveToFollowingLinksNative, aNewParentDir, aNewName);
+}
+
+NS_IMETHODIMP
+nsLocalFile::RenameTo(nsIFile* aNewParentDir, const nsAString& aNewName) {
+  SET_UCS_2ARGS_2(RenameToNative, aNewParentDir, aNewName);
+}
+
+NS_IMETHODIMP
+nsLocalFile::RenameToNative(nsIFile* aNewParentDir,
+                            const nsACString& aNewName) {
+  nsresult rv;
+
+  // check to make sure that this has been initialized properly
+  CHECK_mPath();
+
+  // check to make sure that we have a new parent
+  nsAutoCString newPathName;
+  rv = GetNativeTargetPathName(aNewParentDir, aNewName, newPathName);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  if (!FilePreferences::IsAllowedPath(newPathName)) {
+    return NS_ERROR_FILE_ACCESS_DENIED;
+  }
+
+  // try for atomic rename
+  if (rename(mPath.get(), newPathName.get()) < 0) {
+    if (errno == EXDEV) {
+      rv = NS_ERROR_FILE_ACCESS_DENIED;
+    } else {
+      rv = NSRESULT_FOR_ERRNO();
+    }
+  }
+
+  return rv;
+}
+
+nsresult nsLocalFile::GetTarget(nsAString& aResult) {
+  GET_UCS(GetNativeTarget, aResult);
+}
+
+nsresult NS_NewLocalFile(const nsAString& aPath, bool aFollowLinks,
+                         nsIFile** aResult) {
+  nsAutoCString buf;
+  nsresult rv = NS_CopyUnicodeToNative(aPath, buf);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+  return NS_NewNativeLocalFile(buf, aFollowLinks, aResult);
+}
+
+// nsILocalFileMac
+
+#ifdef MOZ_WIDGET_COCOA
+
+NS_IMETHODIMP
+nsLocalFile::HasXAttr(const nsACString& aAttrName, bool* aHasAttr) {
+  NS_ENSURE_ARG_POINTER(aHasAttr);
+
+  nsAutoCString attrName{aAttrName};
+
+  ssize_t size = getxattr(mPath.get(), attrName.get(), nullptr, 0, 0, 0);
+  if (size == -1) {
+    if (errno == ENOATTR) {
+      *aHasAttr = false;
+    } else {
+      return NSRESULT_FOR_ERRNO();
+    }
+  } else {
+    *aHasAttr = true;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetXAttr(const nsACString& aAttrName,
+                      nsTArray<uint8_t>& aAttrValue) {
+  aAttrValue.Clear();
+
+  nsAutoCString attrName{aAttrName};
+
+  ssize_t size = getxattr(mPath.get(), attrName.get(), nullptr, 0, 0, 0);
+
+  if (size == -1) {
+    return NSRESULT_FOR_ERRNO();
+  }
+
+  for (;;) {
+    aAttrValue.SetCapacity(size);
+
+    // The attribute can change between our first call and this call, so we need
+    // to re-check the size and possibly call with a larger buffer.
+    ssize_t newSize = getxattr(mPath.get(), attrName.get(),
+                               aAttrValue.Elements(), size, 0, 0);
+    if (newSize == -1) {
+      return NSRESULT_FOR_ERRNO();
+    }
+
+    if (newSize <= size) {
+      aAttrValue.SetLength(newSize);
+      break;
+    } else {
+      size = newSize;
+    }
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::SetXAttr(const nsACString& aAttrName,
+                      const nsTArray<uint8_t>& aAttrValue) {
+  nsAutoCString attrName{aAttrName};
+
+  if (setxattr(mPath.get(), attrName.get(), aAttrValue.Elements(),
+               aAttrValue.Length(), 0, 0) == -1) {
+    return NSRESULT_FOR_ERRNO();
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::DelXAttr(const nsACString& aAttrName) {
+  nsAutoCString attrName{aAttrName};
+
+  // Ignore removing an attribute that does not exist.
+  if (removexattr(mPath.get(), attrName.get(), 0) == -1) {
+    return NSRESULT_FOR_ERRNO();
+  }
+
+  return NS_OK;
+}
+
+static nsresult MacErrorMapper(OSErr inErr) {
+  nsresult outErr;
+
+  switch (inErr) {
+    case noErr:
+      outErr = NS_OK;
+      break;
+
+    case fnfErr:
+    case afpObjectNotFound:
+    case afpDirNotFound:
+      outErr = NS_ERROR_FILE_NOT_FOUND;
+      break;
+
+    case dupFNErr:
+    case afpObjectExists:
+      outErr = NS_ERROR_FILE_ALREADY_EXISTS;
+      break;
+
+    case dskFulErr:
+    case afpDiskFull:
+      outErr = NS_ERROR_FILE_NO_DEVICE_SPACE;
+      break;
+
+    case fLckdErr:
+    case afpVolLocked:
+      outErr = NS_ERROR_FILE_IS_LOCKED;
+      break;
+
+    case afpAccessDenied:
+      outErr = NS_ERROR_FILE_ACCESS_DENIED;
+      break;
+
+    case afpDirNotEmpty:
+      outErr = NS_ERROR_FILE_DIR_NOT_EMPTY;
+      break;
+
+    // Can't find good map for some
+    case bdNamErr:
+      outErr = NS_ERROR_FAILURE;
+      break;
+
+    default:
+      outErr = NS_ERROR_FAILURE;
+      break;
+  }
+
+  return outErr;
+}
+
+static nsresult CFStringReftoUTF8(CFStringRef aInStrRef, nsACString& aOutStr) {
+  // first see if the conversion would succeed and find the length of the
+  // result
+  CFIndex usedBufLen, inStrLen = ::CFStringGetLength(aInStrRef);
+  CFIndex charsConverted = ::CFStringGetBytes(
+      aInStrRef, CFRangeMake(0, inStrLen), kCFStringEncodingUTF8, 0, false,
+      nullptr, 0, &usedBufLen);
+  if (charsConverted == inStrLen) {
+    // all characters converted, do the actual conversion
+    aOutStr.SetLength(usedBufLen);
+    if (aOutStr.Length() != (unsigned int)usedBufLen) {
+      return NS_ERROR_OUT_OF_MEMORY;
+    }
+    UInt8* buffer = (UInt8*)aOutStr.BeginWriting();
+    ::CFStringGetBytes(aInStrRef, CFRangeMake(0, inStrLen),
+                       kCFStringEncodingUTF8, 0, false, buffer, usedBufLen,
+                       &usedBufLen);
+    return NS_OK;
+  }
+
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsLocalFile::InitWithCFURL(CFURLRef aCFURL) {
+  UInt8 path[PATH_MAX];
+  if (::CFURLGetFileSystemRepresentation(aCFURL, true, path, PATH_MAX)) {
+    nsDependentCString nativePath((char*)path);
+    return InitWithNativePath(nativePath);
+  }
+
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsLocalFile::InitWithFSRef(const FSRef* aFSRef) {
+  if (NS_WARN_IF(!aFSRef)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  CFURLRef newURLRef = ::CFURLCreateFromFSRef(kCFAllocatorDefault, aFSRef);
+  if (newURLRef) {
+    nsresult rv = InitWithCFURL(newURLRef);
+    ::CFRelease(newURLRef);
+    return rv;
+  }
+
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetCFURL(CFURLRef* aResult) {
+  CHECK_mPath();
+
+  bool isDir;
+  IsDirectory(&isDir);
+  *aResult = ::CFURLCreateFromFileSystemRepresentation(
+      kCFAllocatorDefault, (UInt8*)mPath.get(), mPath.Length(), isDir);
+
+  return (*aResult ? NS_OK : NS_ERROR_FAILURE);
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetFSRef(FSRef* aResult) {
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  nsresult rv = NS_ERROR_FAILURE;
+
+  CFURLRef url = nullptr;
+  if (NS_SUCCEEDED(GetCFURL(&url))) {
+    if (::CFURLGetFSRef(url, aResult)) {
+      rv = NS_OK;
+    }
+    ::CFRelease(url);
+  }
+
+  return rv;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetFSSpec(FSSpec* aResult) {
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  FSRef fsRef;
+  nsresult rv = GetFSRef(&fsRef);
+  if (NS_SUCCEEDED(rv)) {
+    OSErr err = ::FSGetCatalogInfo(&fsRef, kFSCatInfoNone, nullptr, nullptr,
+                                   aResult, nullptr);
+    return MacErrorMapper(err);
+  }
+
+  return rv;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetFileSizeWithResFork(int64_t* aFileSizeWithResFork) {
+  if (NS_WARN_IF(!aFileSizeWithResFork)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  FSRef fsRef;
+  nsresult rv = GetFSRef(&fsRef);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  FSCatalogInfo catalogInfo;
+  OSErr err =
+      ::FSGetCatalogInfo(&fsRef, kFSCatInfoDataSizes + kFSCatInfoRsrcSizes,
+                         &catalogInfo, nullptr, nullptr, nullptr);
+  if (err != noErr) {
+    return MacErrorMapper(err);
+  }
+
+  *aFileSizeWithResFork =
+      catalogInfo.dataLogicalSize + catalogInfo.rsrcLogicalSize;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetFileType(OSType* aFileType) {
+  CFURLRef url;
+  if (NS_SUCCEEDED(GetCFURL(&url))) {
+    nsresult rv = CocoaFileUtils::GetFileTypeCode(url, aFileType);
+    ::CFRelease(url);
+    return rv;
+  }
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsLocalFile::SetFileType(OSType aFileType) {
+  CFURLRef url;
+  if (NS_SUCCEEDED(GetCFURL(&url))) {
+    nsresult rv = CocoaFileUtils::SetFileTypeCode(url, aFileType);
+    ::CFRelease(url);
+    return rv;
+  }
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetFileCreator(OSType* aFileCreator) {
+  CFURLRef url;
+  if (NS_SUCCEEDED(GetCFURL(&url))) {
+    nsresult rv = CocoaFileUtils::GetFileCreatorCode(url, aFileCreator);
+    ::CFRelease(url);
+    return rv;
+  }
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsLocalFile::SetFileCreator(OSType aFileCreator) {
+  CFURLRef url;
+  if (NS_SUCCEEDED(GetCFURL(&url))) {
+    nsresult rv = CocoaFileUtils::SetFileCreatorCode(url, aFileCreator);
+    ::CFRelease(url);
+    return rv;
+  }
+  return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP
+nsLocalFile::LaunchWithDoc(nsIFile* aDocToLoad, bool aLaunchInBackground) {
+  bool isExecutable;
+  nsresult rv = IsExecutable(&isExecutable);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+  if (!isExecutable) {
+    return NS_ERROR_FILE_EXECUTION_FAILED;
+  }
+
+  FSRef appFSRef, docFSRef;
+  rv = GetFSRef(&appFSRef);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  if (aDocToLoad) {
+    nsCOMPtr<nsILocalFileMac> macDoc = do_QueryInterface(aDocToLoad);
+    rv = macDoc->GetFSRef(&docFSRef);
+    if (NS_FAILED(rv)) {
+      return rv;
+    }
+  }
+
+  LSLaunchFlags theLaunchFlags = kLSLaunchDefaults;
+  LSLaunchFSRefSpec thelaunchSpec;
+
+  if (aLaunchInBackground) {
+    theLaunchFlags |= kLSLaunchDontSwitch;
+  }
+  memset(&thelaunchSpec, 0, sizeof(LSLaunchFSRefSpec));
+
+  thelaunchSpec.appRef = &appFSRef;
+  if (aDocToLoad) {
+    thelaunchSpec.numDocs = 1;
+    thelaunchSpec.itemRefs = &docFSRef;
+  }
+  thelaunchSpec.launchFlags = theLaunchFlags;
+
+  OSErr err = ::LSOpenFromRefSpec(&thelaunchSpec, nullptr);
+  if (err != noErr) {
+    return MacErrorMapper(err);
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::OpenDocWithApp(nsIFile* aAppToOpenWith, bool aLaunchInBackground) {
+  FSRef docFSRef;
+  nsresult rv = GetFSRef(&docFSRef);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  if (!aAppToOpenWith) {
+    OSErr err = ::LSOpenFSRef(&docFSRef, nullptr);
+    return MacErrorMapper(err);
+  }
+
+  nsCOMPtr<nsILocalFileMac> appFileMac = do_QueryInterface(aAppToOpenWith, &rv);
+  if (!appFileMac) {
+    return rv;
+  }
+
+  bool isExecutable;
+  rv = appFileMac->IsExecutable(&isExecutable);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+  if (!isExecutable) {
+    return NS_ERROR_FILE_EXECUTION_FAILED;
+  }
+
+  FSRef appFSRef;
+  rv = appFileMac->GetFSRef(&appFSRef);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  LSLaunchFlags theLaunchFlags = kLSLaunchDefaults;
+  LSLaunchFSRefSpec thelaunchSpec;
+
+  if (aLaunchInBackground) {
+    theLaunchFlags |= kLSLaunchDontSwitch;
+  }
+  memset(&thelaunchSpec, 0, sizeof(LSLaunchFSRefSpec));
+
+  thelaunchSpec.appRef = &appFSRef;
+  thelaunchSpec.numDocs = 1;
+  thelaunchSpec.itemRefs = &docFSRef;
+  thelaunchSpec.launchFlags = theLaunchFlags;
+
+  OSErr err = ::LSOpenFromRefSpec(&thelaunchSpec, nullptr);
+  if (err != noErr) {
+    return MacErrorMapper(err);
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::IsPackage(bool* aResult) {
+  if (NS_WARN_IF(!aResult)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+  *aResult = false;
+
+  CFURLRef url;
+  nsresult rv = GetCFURL(&url);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  LSItemInfoRecord info;
+  OSStatus status =
+      ::LSCopyItemInfoForURL(url, kLSRequestBasicFlagsOnly, &info);
+
+  ::CFRelease(url);
+
+  if (status != noErr) {
+    return NS_ERROR_FAILURE;
+  }
+
+  *aResult = !!(info.flags & kLSItemInfoIsPackage);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetBundleDisplayName(nsAString& aOutBundleName) {
+  bool isPackage = false;
+  nsresult rv = IsPackage(&isPackage);
+  if (NS_FAILED(rv) || !isPackage) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsAutoString name;
+  rv = GetLeafName(name);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  int32_t length = name.Length();
+  if (Substring(name, length - 4, length).EqualsLiteral(".app")) {
+    // 4 characters in ".app"
+    aOutBundleName = Substring(name, 0, length - 4);
+  } else {
+    aOutBundleName = name;
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetBundleIdentifier(nsACString& aOutBundleIdentifier) {
+  nsresult rv = NS_ERROR_FAILURE;
+
+  CFURLRef urlRef;
+  if (NS_SUCCEEDED(GetCFURL(&urlRef))) {
+    CFBundleRef bundle = ::CFBundleCreate(nullptr, urlRef);
+    if (bundle) {
+      CFStringRef bundleIdentifier = ::CFBundleGetIdentifier(bundle);
+      if (bundleIdentifier) {
+        rv = CFStringReftoUTF8(bundleIdentifier, aOutBundleIdentifier);
+      }
+      ::CFRelease(bundle);
+    }
+    ::CFRelease(urlRef);
+  }
+
+  return rv;
+}
+
+NS_IMETHODIMP
+nsLocalFile::GetBundleContentsLastModifiedTime(int64_t* aLastModTime) {
+  CHECK_mPath();
+  if (NS_WARN_IF(!aLastModTime)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  bool isPackage = false;
+  nsresult rv = IsPackage(&isPackage);
+  if (NS_FAILED(rv) || !isPackage) {
+    return GetLastModifiedTime(aLastModTime);
+  }
+
+  nsAutoCString infoPlistPath(mPath);
+  infoPlistPath.AppendLiteral("/Contents/Info.plist");
+  PRFileInfo64 info;
+  if (PR_GetFileInfo64(infoPlistPath.get(), &info) != PR_SUCCESS) {
+    return GetLastModifiedTime(aLastModTime);
+  }
+  int64_t modTime = int64_t(info.modifyTime);
+  if (modTime == 0) {
+    *aLastModTime = 0;
+  } else {
+    *aLastModTime = modTime / int64_t(PR_USEC_PER_MSEC);
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP nsLocalFile::InitWithFile(nsIFile* aFile) {
+  if (NS_WARN_IF(!aFile)) {
+    return NS_ERROR_INVALID_ARG;
+  }
+
+  nsAutoCString nativePath;
+  nsresult rv = aFile->GetNativePath(nativePath);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+
+  return InitWithNativePath(nativePath);
+}
+
+nsresult NS_NewLocalFileWithFSRef(const FSRef* aFSRef, bool aFollowLinks,
+                                  nsILocalFileMac** aResult) {
+  RefPtr<nsLocalFile> file = new nsLocalFile();
+
+  nsresult rv = file->InitWithFSRef(aFSRef);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+  file.forget(aResult);
+  return NS_OK;
+}
+
+nsresult NS_NewLocalFileWithCFURL(const CFURLRef aURL, bool aFollowLinks,
+                                  nsILocalFileMac** aResult) {
+  RefPtr<nsLocalFile> file = new nsLocalFile();
+
+  nsresult rv = file->InitWithCFURL(aURL);
+  if (NS_FAILED(rv)) {
+    return rv;
+  }
+  file.forget(aResult);
+  return NS_OK;
+}
+
+#endif