diff options
Diffstat (limited to 'fuse_sdcard_provider.cpp')
-rw-r--r-- | fuse_sdcard_provider.cpp | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/fuse_sdcard_provider.cpp b/fuse_sdcard_provider.cpp deleted file mode 100644 index 46bdf1774..000000000 --- a/fuse_sdcard_provider.cpp +++ /dev/null @@ -1,83 +0,0 @@ -/* - * Copyright (C) 2014 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "fuse_sdcard_provider.h" - -#include <errno.h> -#include <fcntl.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/mount.h> -#include <sys/stat.h> -#include <unistd.h> - -#include <functional> - -#include <android-base/file.h> - -#include "fuse_sideload.h" - -struct file_data { - int fd; // the underlying sdcard file - - uint64_t file_size; - uint32_t block_size; -}; - -static int read_block_file(const file_data& fd, uint32_t block, uint8_t* buffer, - uint32_t fetch_size) { - off64_t offset = static_cast<off64_t>(block) * fd.block_size; - if (TEMP_FAILURE_RETRY(lseek64(fd.fd, offset, SEEK_SET)) == -1) { - fprintf(stderr, "seek on sdcard failed: %s\n", strerror(errno)); - return -EIO; - } - - if (!android::base::ReadFully(fd.fd, buffer, fetch_size)) { - fprintf(stderr, "read on sdcard failed: %s\n", strerror(errno)); - return -EIO; - } - - return 0; -} - -bool start_sdcard_fuse(const char* path) { - struct stat sb; - if (stat(path, &sb) == -1) { - fprintf(stderr, "failed to stat %s: %s\n", path, strerror(errno)); - return false; - } - - file_data fd; - fd.fd = open(path, O_RDONLY); - if (fd.fd == -1) { - fprintf(stderr, "failed to open %s: %s\n", path, strerror(errno)); - return false; - } - fd.file_size = sb.st_size; - fd.block_size = 65536; - - provider_vtab vtab; - vtab.read_block = std::bind(&read_block_file, fd, std::placeholders::_1, std::placeholders::_2, - std::placeholders::_3); - vtab.close = [&fd]() { close(fd.fd); }; - - // The installation process expects to find the sdcard unmounted. Unmount it with MNT_DETACH so - // that our open file continues to work but new references see it as unmounted. - umount2("/sdcard", MNT_DETACH); - - return run_fuse_sideload(vtab, fd.file_size, fd.block_size) == 0; -} |