diff options
| -rw-r--r-- | bootloader.cpp | 10 | ||||
| -rw-r--r-- | uncrypt/uncrypt.cpp | 103 | ||||
| -rw-r--r-- | unique_fd.h | 62 | ||||
| -rw-r--r-- | updater/blockimg.cpp | 42 |
4 files changed, 74 insertions, 143 deletions
diff --git a/bootloader.cpp b/bootloader.cpp index d80c5e793..a32f8b4c6 100644 --- a/bootloader.cpp +++ b/bootloader.cpp @@ -29,7 +29,7 @@ #include "common.h" #include "mtdutils/mtdutils.h" #include "roots.h" -#include "unique_fd.h" +#include <android-base/unique_fd.h> static int get_bootloader_message_mtd(bootloader_message* out, const Volume* v); static int set_bootloader_message_mtd(const bootloader_message* in, const Volume* v); @@ -191,8 +191,8 @@ static int get_bootloader_message_block(bootloader_message* out, static int set_bootloader_message_block(const bootloader_message* in, const Volume* v) { wait_for_device(v->blk_device); - unique_fd fd(open(v->blk_device, O_WRONLY | O_SYNC)); - if (fd.get() == -1) { + android::base::unique_fd fd(open(v->blk_device, O_WRONLY | O_SYNC)); + if (fd == -1) { LOGE("failed to open \"%s\": %s\n", v->blk_device, strerror(errno)); return -1; } @@ -201,7 +201,7 @@ static int set_bootloader_message_block(const bootloader_message* in, const uint8_t* start = reinterpret_cast<const uint8_t*>(in); size_t total = sizeof(*in); while (written < total) { - ssize_t wrote = TEMP_FAILURE_RETRY(write(fd.get(), start + written, total - written)); + ssize_t wrote = TEMP_FAILURE_RETRY(write(fd, start + written, total - written)); if (wrote == -1) { LOGE("failed to write %" PRId64 " bytes: %s\n", static_cast<off64_t>(written), strerror(errno)); @@ -210,7 +210,7 @@ static int set_bootloader_message_block(const bootloader_message* in, written += wrote; } - if (fsync(fd.get()) == -1) { + if (fsync(fd) == -1) { LOGE("failed to fsync \"%s\": %s\n", v->blk_device, strerror(errno)); return -1; } diff --git a/uncrypt/uncrypt.cpp b/uncrypt/uncrypt.cpp index 705744eb6..abbd3e545 100644 --- a/uncrypt/uncrypt.cpp +++ b/uncrypt/uncrypt.cpp @@ -61,6 +61,7 @@ #include <android-base/logging.h> #include <android-base/stringprintf.h> #include <android-base/strings.h> +#include <android-base/unique_fd.h> #include <cutils/android_reboot.h> #include <cutils/properties.h> #include <fs_mgr.h> @@ -69,7 +70,6 @@ #include <log/log.h> #include "bootloader.h" -#include "unique_fd.h" #define WINDOW_SIZE 5 @@ -174,8 +174,9 @@ static int produce_block_map(const char* path, const char* map_file, const char* return -1; } std::string tmp_map_file = std::string(map_file) + ".tmp"; - unique_fd mapfd(open(tmp_map_file.c_str(), O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR)); - if (!mapfd) { + android::base::unique_fd mapfd(open(tmp_map_file.c_str(), + O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR)); + if (mapfd == -1) { ALOGE("failed to open %s: %s\n", tmp_map_file.c_str(), strerror(errno)); return -1; } @@ -201,7 +202,7 @@ static int produce_block_map(const char* path, const char* map_file, const char* std::string s = android::base::StringPrintf("%s\n%" PRId64 " %ld\n", blk_dev, sb.st_size, static_cast<long>(sb.st_blksize)); - if (!android::base::WriteStringToFd(s, mapfd.get())) { + if (!android::base::WriteStringToFd(s, mapfd)) { ALOGE("failed to write %s: %s", tmp_map_file.c_str(), strerror(errno)); return -1; } @@ -213,16 +214,16 @@ static int produce_block_map(const char* path, const char* map_file, const char* int head_block = 0; int head = 0, tail = 0; - unique_fd fd(open(path, O_RDONLY)); - if (!fd) { + android::base::unique_fd fd(open(path, O_RDONLY)); + if (fd == -1) { ALOGE("failed to open %s for reading: %s", path, strerror(errno)); return -1; } - unique_fd wfd(-1); + android::base::unique_fd wfd; if (encrypted) { - wfd = open(blk_dev, O_WRONLY); - if (!wfd) { + wfd.reset(open(blk_dev, O_WRONLY)); + if (wfd == -1) { ALOGE("failed to open fd for writing: %s", strerror(errno)); return -1; } @@ -241,14 +242,14 @@ static int produce_block_map(const char* path, const char* map_file, const char* if ((tail+1) % WINDOW_SIZE == head) { // write out head buffer int block = head_block; - if (ioctl(fd.get(), FIBMAP, &block) != 0) { + if (ioctl(fd, FIBMAP, &block) != 0) { ALOGE("failed to find block %d", head_block); return -1; } add_block_to_ranges(ranges, block); if (encrypted) { - if (write_at_offset(buffers[head].data(), sb.st_blksize, wfd.get(), - static_cast<off64_t>(sb.st_blksize) * block) != 0) { + if (write_at_offset(buffers[head].data(), sb.st_blksize, wfd, + static_cast<off64_t>(sb.st_blksize) * block) != 0) { return -1; } } @@ -260,7 +261,7 @@ static int produce_block_map(const char* path, const char* map_file, const char* if (encrypted) { size_t to_read = static_cast<size_t>( std::min(static_cast<off64_t>(sb.st_blksize), sb.st_size - pos)); - if (!android::base::ReadFully(fd.get(), buffers[tail].data(), to_read)) { + if (!android::base::ReadFully(fd, buffers[tail].data(), to_read)) { ALOGE("failed to read: %s", strerror(errno)); return -1; } @@ -277,14 +278,14 @@ static int produce_block_map(const char* path, const char* map_file, const char* while (head != tail) { // write out head buffer int block = head_block; - if (ioctl(fd.get(), FIBMAP, &block) != 0) { + if (ioctl(fd, FIBMAP, &block) != 0) { ALOGE("failed to find block %d", head_block); return -1; } add_block_to_ranges(ranges, block); if (encrypted) { - if (write_at_offset(buffers[head].data(), sb.st_blksize, wfd.get(), - static_cast<off64_t>(sb.st_blksize) * block) != 0) { + if (write_at_offset(buffers[head].data(), sb.st_blksize, wfd, + static_cast<off64_t>(sb.st_blksize) * block) != 0) { return -1; } } @@ -293,38 +294,36 @@ static int produce_block_map(const char* path, const char* map_file, const char* } if (!android::base::WriteStringToFd( - android::base::StringPrintf("%zu\n", ranges.size() / 2), mapfd.get())) { + android::base::StringPrintf("%zu\n", ranges.size() / 2), mapfd)) { ALOGE("failed to write %s: %s", tmp_map_file.c_str(), strerror(errno)); return -1; } for (size_t i = 0; i < ranges.size(); i += 2) { if (!android::base::WriteStringToFd( - android::base::StringPrintf("%d %d\n", ranges[i], ranges[i+1]), mapfd.get())) { + android::base::StringPrintf("%d %d\n", ranges[i], ranges[i+1]), mapfd)) { ALOGE("failed to write %s: %s", tmp_map_file.c_str(), strerror(errno)); return -1; } } - if (fsync(mapfd.get()) == -1) { + if (fsync(mapfd) == -1) { ALOGE("failed to fsync \"%s\": %s", tmp_map_file.c_str(), strerror(errno)); return -1; } - if (close(mapfd.get() == -1)) { + if (close(mapfd.release()) == -1) { ALOGE("failed to close %s: %s", tmp_map_file.c_str(), strerror(errno)); return -1; } - mapfd = -1; if (encrypted) { - if (fsync(wfd.get()) == -1) { + if (fsync(wfd) == -1) { ALOGE("failed to fsync \"%s\": %s", blk_dev, strerror(errno)); return -1; } - if (close(wfd.get()) == -1) { + if (close(wfd.release()) == -1) { ALOGE("failed to close %s: %s", blk_dev, strerror(errno)); return -1; } - wfd = -1; } if (rename(tmp_map_file.c_str(), map_file) == -1) { @@ -334,20 +333,19 @@ static int produce_block_map(const char* path, const char* map_file, const char* // Sync dir to make rename() result written to disk. std::string file_name = map_file; std::string dir_name = dirname(&file_name[0]); - unique_fd dfd(open(dir_name.c_str(), O_RDONLY | O_DIRECTORY)); - if (!dfd) { + android::base::unique_fd dfd(open(dir_name.c_str(), O_RDONLY | O_DIRECTORY)); + if (dfd == -1) { ALOGE("failed to open dir %s: %s", dir_name.c_str(), strerror(errno)); return -1; } - if (fsync(dfd.get()) == -1) { + if (fsync(dfd) == -1) { ALOGE("failed to fsync %s: %s", dir_name.c_str(), strerror(errno)); return -1; } - if (close(dfd.get() == -1)) { + if (close(dfd.release()) == -1) { ALOGE("failed to close %s: %s", dir_name.c_str(), strerror(errno)); return -1; } - dfd = -1; return 0; } @@ -371,12 +369,12 @@ static int read_bootloader_message(bootloader_message* out) { ALOGE("failed to find /misc partition."); return -1; } - unique_fd fd(open(misc_blk_device.c_str(), O_RDONLY)); - if (!fd) { + android::base::unique_fd fd(open(misc_blk_device.c_str(), O_RDONLY)); + if (fd == -1) { ALOGE("failed to open %s: %s", misc_blk_device.c_str(), strerror(errno)); return -1; } - if (!android::base::ReadFully(fd.get(), out, sizeof(*out))) { + if (!android::base::ReadFully(fd, out, sizeof(*out))) { ALOGE("failed to read %s: %s", misc_blk_device.c_str(), strerror(errno)); return -1; } @@ -389,17 +387,17 @@ static int write_bootloader_message(const bootloader_message* in) { ALOGE("failed to find /misc partition."); return -1; } - unique_fd fd(open(misc_blk_device.c_str(), O_WRONLY | O_SYNC)); - if (!fd) { + android::base::unique_fd fd(open(misc_blk_device.c_str(), O_WRONLY | O_SYNC)); + if (fd == -1) { ALOGE("failed to open %s: %s", misc_blk_device.c_str(), strerror(errno)); return -1; } - if (!android::base::WriteFully(fd.get(), in, sizeof(*in))) { + if (!android::base::WriteFully(fd, in, sizeof(*in))) { ALOGE("failed to write %s: %s", misc_blk_device.c_str(), strerror(errno)); return -1; } // TODO: O_SYNC and fsync() duplicates each other? - if (fsync(fd.get()) == -1) { + if (fsync(fd) == -1) { ALOGE("failed to fsync %s: %s", misc_blk_device.c_str(), strerror(errno)); return -1; } @@ -465,8 +463,9 @@ static int uncrypt(const char* input_path, const char* map_file, int status_fd) static int uncrypt_wrapper(const char* input_path, const char* map_file, const std::string& status_file) { // The pipe has been created by the system server. - unique_fd status_fd(open(status_file.c_str(), O_WRONLY | O_CREAT | O_SYNC, S_IRUSR | S_IWUSR)); - if (!status_fd) { + android::base::unique_fd status_fd(open(status_file.c_str(), + O_WRONLY | O_CREAT | O_SYNC, S_IRUSR | S_IWUSR)); + if (status_fd == -1) { ALOGE("failed to open pipe \"%s\": %s", status_file.c_str(), strerror(errno)); return 1; } @@ -474,46 +473,48 @@ static int uncrypt_wrapper(const char* input_path, const char* map_file, std::string package; if (input_path == nullptr) { if (!find_uncrypt_package(UNCRYPT_PATH_FILE, &package)) { - android::base::WriteStringToFd("-1\n", status_fd.get()); + android::base::WriteStringToFd("-1\n", status_fd); return 1; } input_path = package.c_str(); } CHECK(map_file != nullptr); - int status = uncrypt(input_path, map_file, status_fd.get()); + int status = uncrypt(input_path, map_file, status_fd); if (status != 0) { - android::base::WriteStringToFd("-1\n", status_fd.get()); + android::base::WriteStringToFd("-1\n", status_fd); return 1; } - android::base::WriteStringToFd("100\n", status_fd.get()); + android::base::WriteStringToFd("100\n", status_fd); return 0; } static int clear_bcb(const std::string& status_file) { - unique_fd status_fd(open(status_file.c_str(), O_WRONLY | O_CREAT | O_SYNC, S_IRUSR | S_IWUSR)); - if (!status_fd) { + android::base::unique_fd status_fd(open(status_file.c_str(), + O_WRONLY | O_CREAT | O_SYNC, S_IRUSR | S_IWUSR)); + if (status_fd == -1) { ALOGE("failed to open pipe \"%s\": %s", status_file.c_str(), strerror(errno)); return 1; } bootloader_message boot = {}; if (write_bootloader_message(&boot) != 0) { - android::base::WriteStringToFd("-1\n", status_fd.get()); + android::base::WriteStringToFd("-1\n", status_fd); return 1; } - android::base::WriteStringToFd("100\n", status_fd.get()); + android::base::WriteStringToFd("100\n", status_fd); return 0; } static int setup_bcb(const std::string& command_file, const std::string& status_file) { - unique_fd status_fd(open(status_file.c_str(), O_WRONLY | O_CREAT | O_SYNC, S_IRUSR | S_IWUSR)); - if (!status_fd) { + android::base::unique_fd status_fd(open(status_file.c_str(), + O_WRONLY | O_CREAT | O_SYNC, S_IRUSR | S_IWUSR)); + if (status_fd == -1) { ALOGE("failed to open pipe \"%s\": %s", status_file.c_str(), strerror(errno)); return 1; } std::string content; if (!android::base::ReadFileToString(command_file, &content)) { ALOGE("failed to read \"%s\": %s", command_file.c_str(), strerror(errno)); - android::base::WriteStringToFd("-1\n", status_fd.get()); + android::base::WriteStringToFd("-1\n", status_fd); return 1; } bootloader_message boot = {}; @@ -522,10 +523,10 @@ static int setup_bcb(const std::string& command_file, const std::string& status_ strlcat(boot.recovery, content.c_str(), sizeof(boot.recovery)); if (write_bootloader_message(&boot) != 0) { ALOGE("failed to set bootloader message"); - android::base::WriteStringToFd("-1\n", status_fd.get()); + android::base::WriteStringToFd("-1\n", status_fd); return 1; } - android::base::WriteStringToFd("100\n", status_fd.get()); + android::base::WriteStringToFd("100\n", status_fd); return 0; } diff --git a/unique_fd.h b/unique_fd.h deleted file mode 100644 index cc85383f8..000000000 --- a/unique_fd.h +++ /dev/null @@ -1,62 +0,0 @@ -/* - * Copyright (C) 2015 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. - */ - -#ifndef UNIQUE_FD_H -#define UNIQUE_FD_H - -#include <stdio.h> - -#include <memory> - -class unique_fd { - public: - unique_fd(int fd) : fd_(fd) { } - - unique_fd(unique_fd&& uf) { - fd_ = uf.fd_; - uf.fd_ = -1; - } - - ~unique_fd() { - if (fd_ != -1) { - close(fd_); - } - } - - int get() { - return fd_; - } - - // Movable. - unique_fd& operator=(unique_fd&& uf) { - fd_ = uf.fd_; - uf.fd_ = -1; - return *this; - } - - explicit operator bool() const { - return fd_ != -1; - } - - private: - int fd_; - - // Non-copyable. - unique_fd(const unique_fd&) = delete; - unique_fd& operator=(const unique_fd&) = delete; -}; - -#endif // UNIQUE_FD_H diff --git a/updater/blockimg.cpp b/updater/blockimg.cpp index 9d329cd24..908e11631 100644 --- a/updater/blockimg.cpp +++ b/updater/blockimg.cpp @@ -40,6 +40,7 @@ #include <android-base/parseint.h> #include <android-base/strings.h> +#include <android-base/unique_fd.h> #include "applypatch/applypatch.h" #include "edify/expr.h" @@ -48,7 +49,6 @@ #include "minzip/Hash.h" #include "ota_io.h" #include "print_sha1.h" -#include "unique_fd.h" #include "updater.h" #define BLOCKSIZE 4096 @@ -368,7 +368,7 @@ struct CommandParameters { std::string stashbase; bool canwrite; int createdstash; - int fd; + android::base::unique_fd fd; bool foundwrites; bool isunresumable; int version; @@ -577,9 +577,7 @@ static int LoadStash(CommandParameters& params, const std::string& base, const s return -1; } - int fd = TEMP_FAILURE_RETRY(ota_open(fn.c_str(), O_RDONLY)); - unique_fd fd_holder(fd); - + android::base::unique_fd fd(TEMP_FAILURE_RETRY(ota_open(fn.c_str(), O_RDONLY))); if (fd == -1) { fprintf(stderr, "open \"%s\" failed: %s\n", fn.c_str(), strerror(errno)); return -1; @@ -634,9 +632,9 @@ static int WriteStash(const std::string& base, const std::string& id, int blocks fprintf(stderr, " writing %d blocks to %s\n", blocks, cn.c_str()); - int fd = TEMP_FAILURE_RETRY(ota_open(fn.c_str(), O_WRONLY | O_CREAT | O_TRUNC, STASH_FILE_MODE)); - unique_fd fd_holder(fd); - + android::base::unique_fd fd(TEMP_FAILURE_RETRY(ota_open(fn.c_str(), + O_WRONLY | O_CREAT | O_TRUNC, + STASH_FILE_MODE))); if (fd == -1) { fprintf(stderr, "failed to create \"%s\": %s\n", fn.c_str(), strerror(errno)); return -1; @@ -658,9 +656,8 @@ static int WriteStash(const std::string& base, const std::string& id, int blocks } std::string dname = GetStashFileName(base, "", ""); - int dfd = TEMP_FAILURE_RETRY(ota_open(dname.c_str(), O_RDONLY | O_DIRECTORY)); - unique_fd dfd_holder(dfd); - + android::base::unique_fd dfd(TEMP_FAILURE_RETRY(ota_open(dname.c_str(), + O_RDONLY | O_DIRECTORY))); if (dfd == -1) { fprintf(stderr, "failed to open \"%s\" failed: %s\n", dname.c_str(), strerror(errno)); return -1; @@ -942,8 +939,8 @@ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t& tgthash = params.tokens[params.cpos++]; } - if (LoadSrcTgtVersion2(params, tgt, src_blocks, params.buffer, params.fd, params.stashbase, - &overlap) == -1) { + if (LoadSrcTgtVersion2(params, tgt, src_blocks, params.buffer, params.fd, + params.stashbase, &overlap) == -1) { return -1; } @@ -1385,9 +1382,7 @@ static Value* PerformBlockImageUpdate(const char* name, State* state, int /* arg return StringValue(strdup("")); } - params.fd = TEMP_FAILURE_RETRY(ota_open(blockdev_filename->data, O_RDWR)); - unique_fd fd_holder(params.fd); - + params.fd.reset(TEMP_FAILURE_RETRY(ota_open(blockdev_filename->data, O_RDWR))); if (params.fd == -1) { fprintf(stderr, "open \"%s\" failed: %s\n", blockdev_filename->data, strerror(errno)); return StringValue(strdup("")); @@ -1532,7 +1527,7 @@ pbiudone: if (ota_fsync(params.fd) == -1) { fprintf(stderr, "fsync failed: %s\n", strerror(errno)); } - // params.fd will be automatically closed because of the fd_holder above. + // params.fd will be automatically closed because it's a unique_fd. // Only delete the stash if the update cannot be resumed, or it's // a verification run and we created the stash. @@ -1653,9 +1648,8 @@ Value* RangeSha1Fn(const char* name, State* state, int /* argc */, Expr* argv[]) return StringValue(strdup("")); } - int fd = ota_open(blockdev_filename->data, O_RDWR); - unique_fd fd_holder(fd); - if (fd < 0) { + android::base::unique_fd fd(ota_open(blockdev_filename->data, O_RDWR)); + if (fd == -1) { ErrorAbort(state, "open \"%s\" failed: %s", blockdev_filename->data, strerror(errno)); return StringValue(strdup("")); } @@ -1676,7 +1670,7 @@ Value* RangeSha1Fn(const char* name, State* state, int /* argc */, Expr* argv[]) for (size_t j = rs.pos[i*2]; j < rs.pos[i*2+1]; ++j) { if (read_all(fd, buffer, BLOCKSIZE) == -1) { ErrorAbort(state, "failed to read %s: %s", blockdev_filename->data, - strerror(errno)); + strerror(errno)); return StringValue(strdup("")); } @@ -1707,8 +1701,7 @@ Value* CheckFirstBlockFn(const char* name, State* state, int argc, Expr* argv[]) return StringValue(strdup("")); } - int fd = ota_open(arg_filename->data, O_RDONLY); - unique_fd fd_holder(fd); + android::base::unique_fd fd(ota_open(arg_filename->data, O_RDONLY)); if (fd == -1) { ErrorAbort(state, "open \"%s\" failed: %s", arg_filename->data, strerror(errno)); return StringValue(strdup("")); @@ -1718,8 +1711,7 @@ Value* CheckFirstBlockFn(const char* name, State* state, int argc, Expr* argv[]) std::vector<uint8_t> block0_buffer(BLOCKSIZE); if (ReadBlocks(blk0, block0_buffer, fd) == -1) { - ErrorAbort(state, "failed to read %s: %s", arg_filename->data, - strerror(errno)); + ErrorAbort(state, "failed to read %s: %s", arg_filename->data, strerror(errno)); return StringValue(strdup("")); } |