diff options
Diffstat (limited to 'updater/blockimg.cpp')
| -rw-r--r-- | updater/blockimg.cpp | 1655 |
1 files changed, 835 insertions, 820 deletions
diff --git a/updater/blockimg.cpp b/updater/blockimg.cpp index a80180a9a..c614ccc47 100644 --- a/updater/blockimg.cpp +++ b/updater/blockimg.cpp @@ -18,7 +18,6 @@ #include <errno.h> #include <dirent.h> #include <fcntl.h> -#include <inttypes.h> #include <linux/fs.h> #include <pthread.h> #include <stdarg.h> @@ -33,114 +32,130 @@ #include <unistd.h> #include <fec/io.h> -#include <map> +#include <functional> #include <memory> #include <string> +#include <unordered_map> #include <vector> +#include <android-base/logging.h> #include <android-base/parseint.h> #include <android-base/strings.h> +#include <android-base/unique_fd.h> +#include <applypatch/applypatch.h> +#include <openssl/sha.h> +#include <private/android_filesystem_config.h> +#include <ziparchive/zip_archive.h> -#include "applypatch/applypatch.h" #include "edify/expr.h" #include "error_code.h" -#include "install.h" -#include "openssl/sha.h" -#include "minzip/Hash.h" +#include "updater/install.h" #include "ota_io.h" #include "print_sha1.h" -#include "unique_fd.h" -#include "updater.h" - -#define BLOCKSIZE 4096 +#include "updater/updater.h" // Set this to 0 to interpret 'erase' transfers to mean do a // BLKDISCARD ioctl (the normal behavior). Set to 1 to interpret // erase to mean fill the region with zeroes. #define DEBUG_ERASE 0 -#define STASH_DIRECTORY_BASE "/cache/recovery" -#define STASH_DIRECTORY_MODE 0700 -#define STASH_FILE_MODE 0600 +static constexpr size_t BLOCKSIZE = 4096; +static constexpr const char* STASH_DIRECTORY_BASE = "/cache/recovery"; +static constexpr mode_t STASH_DIRECTORY_MODE = 0700; +static constexpr mode_t STASH_FILE_MODE = 0600; struct RangeSet { - size_t count; // Limit is INT_MAX. - size_t size; - std::vector<size_t> pos; // Actual limit is INT_MAX. + size_t count; // Limit is INT_MAX. + size_t size; + std::vector<size_t> pos; // Actual limit is INT_MAX. + + // Get the block number for the ith(starting from 0) block in the range set. + int get_block(size_t idx) const { + if (idx >= size) { + LOG(ERROR) << "index: " << idx << " is greater than range set size: " << size; + return -1; + } + for (size_t i = 0; i < pos.size(); i += 2) { + if (idx < pos[i + 1] - pos[i]) { + return pos[i] + idx; + } + idx -= (pos[i + 1] - pos[i]); + } + return -1; + } }; static CauseCode failure_type = kNoCause; static bool is_retry = false; -static std::map<std::string, RangeSet> stash_map; +static std::unordered_map<std::string, RangeSet> stash_map; -static void parse_range(const std::string& range_text, RangeSet& rs) { - - std::vector<std::string> pieces = android::base::Split(range_text, ","); - if (pieces.size() < 3) { - goto err; - } +static RangeSet parse_range(const std::string& range_text) { + RangeSet rs; - size_t num; - if (!android::base::ParseUint(pieces[0].c_str(), &num, static_cast<size_t>(INT_MAX))) { - goto err; - } + std::vector<std::string> pieces = android::base::Split(range_text, ","); + if (pieces.size() < 3) { + goto err; + } - if (num == 0 || num % 2) { - goto err; // must be even - } else if (num != pieces.size() - 1) { - goto err; - } + size_t num; + if (!android::base::ParseUint(pieces[0], &num, static_cast<size_t>(INT_MAX))) { + goto err; + } - rs.pos.resize(num); - rs.count = num / 2; - rs.size = 0; + if (num == 0 || num % 2) { + goto err; // must be even + } else if (num != pieces.size() - 1) { + goto err; + } - for (size_t i = 0; i < num; i += 2) { - if (!android::base::ParseUint(pieces[i+1].c_str(), &rs.pos[i], - static_cast<size_t>(INT_MAX))) { - goto err; - } + rs.pos.resize(num); + rs.count = num / 2; + rs.size = 0; - if (!android::base::ParseUint(pieces[i+2].c_str(), &rs.pos[i+1], - static_cast<size_t>(INT_MAX))) { - goto err; - } + for (size_t i = 0; i < num; i += 2) { + if (!android::base::ParseUint(pieces[i + 1], &rs.pos[i], static_cast<size_t>(INT_MAX))) { + goto err; + } - if (rs.pos[i] >= rs.pos[i+1]) { - goto err; // empty or negative range - } + if (!android::base::ParseUint(pieces[i + 2], &rs.pos[i + 1], static_cast<size_t>(INT_MAX))) { + goto err; + } - size_t sz = rs.pos[i+1] - rs.pos[i]; - if (rs.size > SIZE_MAX - sz) { - goto err; // overflow - } + if (rs.pos[i] >= rs.pos[i + 1]) { + goto err; // empty or negative range + } - rs.size += sz; + size_t sz = rs.pos[i + 1] - rs.pos[i]; + if (rs.size > SIZE_MAX - sz) { + goto err; // overflow } - return; + rs.size += sz; + } + + return rs; err: - fprintf(stderr, "failed to parse range '%s'\n", range_text.c_str()); - exit(1); + LOG(ERROR) << "failed to parse range '" << range_text << "'"; + exit(EXIT_FAILURE); } static bool range_overlaps(const RangeSet& r1, const RangeSet& r2) { - for (size_t i = 0; i < r1.count; ++i) { - size_t r1_0 = r1.pos[i * 2]; - size_t r1_1 = r1.pos[i * 2 + 1]; + for (size_t i = 0; i < r1.count; ++i) { + size_t r1_0 = r1.pos[i * 2]; + size_t r1_1 = r1.pos[i * 2 + 1]; - for (size_t j = 0; j < r2.count; ++j) { - size_t r2_0 = r2.pos[j * 2]; - size_t r2_1 = r2.pos[j * 2 + 1]; + for (size_t j = 0; j < r2.count; ++j) { + size_t r2_0 = r2.pos[j * 2]; + size_t r2_1 = r2.pos[j * 2 + 1]; - if (!(r2_0 >= r1_1 || r1_0 >= r2_1)) { - return true; - } - } + if (!(r2_0 >= r1_1 || r1_0 >= r2_1)) { + return true; + } } + } - return false; + return false; } static int read_all(int fd, uint8_t* data, size_t size) { @@ -149,7 +164,11 @@ static int read_all(int fd, uint8_t* data, size_t size) { ssize_t r = TEMP_FAILURE_RETRY(ota_read(fd, data+so_far, size-so_far)); if (r == -1) { failure_type = kFreadFailure; - fprintf(stderr, "read failed: %s\n", strerror(errno)); + PLOG(ERROR) << "read failed"; + return -1; + } else if (r == 0) { + failure_type = kFreadFailure; + LOG(ERROR) << "read reached unexpected EOF."; return -1; } so_far += r; @@ -167,7 +186,7 @@ static int write_all(int fd, const uint8_t* data, size_t size) { ssize_t w = TEMP_FAILURE_RETRY(ota_write(fd, data+written, size-written)); if (w == -1) { failure_type = kFwriteFailure; - fprintf(stderr, "write failed: %s\n", strerror(errno)); + PLOG(ERROR) << "write failed"; return -1; } written += w; @@ -189,7 +208,7 @@ static bool discard_blocks(int fd, off64_t offset, uint64_t size) { uint64_t args[2] = {static_cast<uint64_t>(offset), size}; int status = ioctl(fd, BLKDISCARD, &args); if (status == -1) { - fprintf(stderr, "BLKDISCARD ioctl failed: %s\n", strerror(errno)); + PLOG(ERROR) << "BLKDISCARD ioctl failed"; return false; } return true; @@ -199,7 +218,7 @@ static bool check_lseek(int fd, off64_t offset, int whence) { off64_t rc = TEMP_FAILURE_RETRY(lseek64(fd, offset, whence)); if (rc == -1) { failure_type = kLseekFailure; - fprintf(stderr, "lseek64 failed: %s\n", strerror(errno)); + PLOG(ERROR) << "lseek64 failed"; return false; } return true; @@ -213,7 +232,7 @@ static void allocate(size_t size, std::vector<uint8_t>& buffer) { } struct RangeSinkState { - RangeSinkState(RangeSet& rs) : tgt(rs) { }; + explicit RangeSinkState(RangeSet& rs) : tgt(rs) { }; int fd; const RangeSet& tgt; @@ -225,7 +244,7 @@ static ssize_t RangeSinkWrite(const uint8_t* data, ssize_t size, void* token) { RangeSinkState* rss = reinterpret_cast<RangeSinkState*>(token); if (rss->p_remain == 0) { - fprintf(stderr, "range sink write overrun"); + LOG(ERROR) << "range sink write overrun"; return 0; } @@ -296,8 +315,8 @@ static ssize_t RangeSinkWrite(const uint8_t* data, ssize_t size, void* token) { // rss and signals the condition again. struct NewThreadInfo { - ZipArchive* za; - const ZipEntry* entry; + ZipArchiveHandle za; + ZipEntry entry; RangeSinkState* rss; @@ -305,7 +324,7 @@ struct NewThreadInfo { pthread_cond_t cv; }; -static bool receive_new_data(const unsigned char* data, int size, void* cookie) { +static bool receive_new_data(const uint8_t* data, size_t size, void* cookie) { NewThreadInfo* nti = reinterpret_cast<NewThreadInfo*>(cookie); while (size > 0) { @@ -337,8 +356,8 @@ static bool receive_new_data(const unsigned char* data, int size, void* cookie) } static void* unzip_new_data(void* cookie) { - NewThreadInfo* nti = (NewThreadInfo*) cookie; - mzProcessZipEntryContents(nti->za, nti->entry, receive_new_data, nti); + NewThreadInfo* nti = static_cast<NewThreadInfo*>(cookie); + ProcessZipEntryContents(nti->za, &nti->entry, receive_new_data, nti); return nullptr; } @@ -398,7 +417,7 @@ struct CommandParameters { std::string stashbase; bool canwrite; int createdstash; - int fd; + android::base::unique_fd fd; bool foundwrites; bool isunresumable; int version; @@ -410,34 +429,109 @@ struct CommandParameters { uint8_t* patch_start; }; -// Do a source/target load for move/bsdiff/imgdiff in version 1. -// We expect to parse the remainder of the parameter tokens as: -// -// <src_range> <tgt_range> -// -// The source range is loaded into the provided buffer, reallocating -// it to make it larger if necessary. - -static int LoadSrcTgtVersion1(CommandParameters& params, RangeSet& tgt, size_t& src_blocks, - std::vector<uint8_t>& buffer, int fd) { +// Print the hash in hex for corrupted source blocks (excluding the stashed blocks which is +// handled separately). +static void PrintHashForCorruptedSourceBlocks(const CommandParameters& params, + const std::vector<uint8_t>& buffer) { + LOG(INFO) << "unexpected contents of source blocks in cmd:\n" << params.cmdline; + CHECK(params.tokens[0] == "move" || params.tokens[0] == "bsdiff" || + params.tokens[0] == "imgdiff"); + + size_t pos = 0; + // Command example: + // move <onehash> <tgt_range> <src_blk_count> <src_range> [<loc_range> <stashed_blocks>] + // bsdiff <offset> <len> <src_hash> <tgt_hash> <tgt_range> <src_blk_count> <src_range> + // [<loc_range> <stashed_blocks>] + if (params.tokens[0] == "move") { + // src_range for move starts at the 4th position. + if (params.tokens.size() < 5) { + LOG(ERROR) << "failed to parse source range in cmd:\n" << params.cmdline; + return; + } + pos = 4; + } else { + // src_range for diff starts at the 7th position. + if (params.tokens.size() < 8) { + LOG(ERROR) << "failed to parse source range in cmd:\n" << params.cmdline; + return; + } + pos = 7; + } + + // Source blocks in stash only, no work to do. + if (params.tokens[pos] == "-") { + return; + } + + RangeSet src = parse_range(params.tokens[pos++]); + + RangeSet locs; + // If there's no stashed blocks, content in the buffer is consecutive and has the same + // order as the source blocks. + if (pos == params.tokens.size()) { + locs.count = 1; + locs.size = src.size; + locs.pos = { 0, src.size }; + } else { + // Otherwise, the next token is the offset of the source blocks in the target range. + // Example: for the tokens <4,63946,63947,63948,63979> <4,6,7,8,39> <stashed_blocks>; + // We want to print SHA-1 for the data in buffer[6], buffer[8], buffer[9] ... buffer[38]; + // this corresponds to the 32 src blocks #63946, #63948, #63949 ... #63978. + locs = parse_range(params.tokens[pos++]); + CHECK_EQ(src.size, locs.size); + CHECK_EQ(locs.pos.size() % 2, static_cast<size_t>(0)); + } + + LOG(INFO) << "printing hash in hex for " << src.size << " source blocks"; + for (size_t i = 0; i < src.size; i++) { + int block_num = src.get_block(i); + CHECK_NE(block_num, -1); + int buffer_index = locs.get_block(i); + CHECK_NE(buffer_index, -1); + CHECK_LE((buffer_index + 1) * BLOCKSIZE, buffer.size()); - if (params.cpos + 1 >= params.tokens.size()) { - fprintf(stderr, "invalid parameters\n"); - return -1; - } + uint8_t digest[SHA_DIGEST_LENGTH]; + SHA1(buffer.data() + buffer_index * BLOCKSIZE, BLOCKSIZE, digest); + std::string hexdigest = print_sha1(digest); + LOG(INFO) << " block number: " << block_num << ", SHA-1: " << hexdigest; + } +} - // <src_range> - RangeSet src; - parse_range(params.tokens[params.cpos++], src); +// If the calculated hash for the whole stash doesn't match the stash id, print the SHA-1 +// in hex for each block. +static void PrintHashForCorruptedStashedBlocks(const std::string& id, + const std::vector<uint8_t>& buffer, + const RangeSet& src) { + LOG(INFO) << "printing hash in hex for stash_id: " << id; + CHECK_EQ(src.size * BLOCKSIZE, buffer.size()); - // <tgt_range> - parse_range(params.tokens[params.cpos++], tgt); + for (size_t i = 0; i < src.size; i++) { + int block_num = src.get_block(i); + CHECK_NE(block_num, -1); - allocate(src.size * BLOCKSIZE, buffer); - int rc = ReadBlocks(src, buffer, fd); - src_blocks = src.size; + uint8_t digest[SHA_DIGEST_LENGTH]; + SHA1(buffer.data() + i * BLOCKSIZE, BLOCKSIZE, digest); + std::string hexdigest = print_sha1(digest); + LOG(INFO) << " block number: " << block_num << ", SHA-1: " << hexdigest; + } +} - return rc; +// If the stash file doesn't exist, read the source blocks this stash contains and print the +// SHA-1 for these blocks. +static void PrintHashForMissingStashedBlocks(const std::string& id, int fd) { + if (stash_map.find(id) == stash_map.end()) { + LOG(ERROR) << "No stash saved for id: " << id; + return; + } + + LOG(INFO) << "print hash in hex for source blocks in missing stash: " << id; + const RangeSet& src = stash_map[id]; + std::vector<uint8_t> buffer(src.size * BLOCKSIZE); + if (ReadBlocks(src, buffer, fd) == -1) { + LOG(ERROR) << "failed to read source blocks for stash: " << id; + return; + } + PrintHashForCorruptedStashedBlocks(id, buffer, src); } static int VerifyBlocks(const std::string& expected, const std::vector<uint8_t>& buffer, @@ -451,8 +545,8 @@ static int VerifyBlocks(const std::string& expected, const std::vector<uint8_t>& if (hexdigest != expected) { if (printerror) { - fprintf(stderr, "failed to verify blocks (expected %s, read %s)\n", - expected.c_str(), hexdigest.c_str()); + LOG(ERROR) << "failed to verify blocks (expected " << expected << ", read " + << hexdigest << ")"; } return -1; } @@ -472,92 +566,58 @@ static std::string GetStashFileName(const std::string& base, const std::string& return fn; } -typedef void (*StashCallback)(const std::string&, void*); +// Does a best effort enumeration of stash files. Ignores possible non-file items in the stash +// directory and continues despite of errors. Calls the 'callback' function for each file. +static void EnumerateStash(const std::string& dirname, + const std::function<void(const std::string&)>& callback) { + if (dirname.empty()) return; -// Does a best effort enumeration of stash files. Ignores possible non-file -// items in the stash directory and continues despite of errors. Calls the -// 'callback' function for each file and passes 'data' to the function as a -// parameter. + std::unique_ptr<DIR, decltype(&closedir)> directory(opendir(dirname.c_str()), closedir); -static void EnumerateStash(const std::string& dirname, StashCallback callback, void* data) { - if (dirname.empty() || callback == nullptr) { - return; - } - - std::unique_ptr<DIR, int(*)(DIR*)> directory(opendir(dirname.c_str()), closedir); - - if (directory == nullptr) { - if (errno != ENOENT) { - fprintf(stderr, "opendir \"%s\" failed: %s\n", dirname.c_str(), strerror(errno)); - } - return; - } - - struct dirent* item; - while ((item = readdir(directory.get())) != nullptr) { - if (item->d_type != DT_REG) { - continue; - } - - std::string fn = dirname + "/" + std::string(item->d_name); - callback(fn, data); - } -} - -static void UpdateFileSize(const std::string& fn, void* data) { - if (fn.empty() || !data) { - return; - } - - struct stat sb; - if (stat(fn.c_str(), &sb) == -1) { - fprintf(stderr, "stat \"%s\" failed: %s\n", fn.c_str(), strerror(errno)); - return; + if (directory == nullptr) { + if (errno != ENOENT) { + PLOG(ERROR) << "opendir \"" << dirname << "\" failed"; } + return; + } - int* size = reinterpret_cast<int*>(data); - *size += sb.st_size; + dirent* item; + while ((item = readdir(directory.get())) != nullptr) { + if (item->d_type != DT_REG) continue; + callback(dirname + "/" + item->d_name); + } } // Deletes the stash directory and all files in it. Assumes that it only // contains files. There is nothing we can do about unlikely, but possible // errors, so they are merely logged. +static void DeleteFile(const std::string& fn) { + if (fn.empty()) return; -static void DeleteFile(const std::string& fn, void* /* data */) { - if (!fn.empty()) { - fprintf(stderr, "deleting %s\n", fn.c_str()); + LOG(INFO) << "deleting " << fn; - if (unlink(fn.c_str()) == -1 && errno != ENOENT) { - fprintf(stderr, "unlink \"%s\" failed: %s\n", fn.c_str(), strerror(errno)); - } - } -} - -static void DeletePartial(const std::string& fn, void* data) { - if (android::base::EndsWith(fn, ".partial")) { - DeleteFile(fn, data); - } + if (unlink(fn.c_str()) == -1 && errno != ENOENT) { + PLOG(ERROR) << "unlink \"" << fn << "\" failed"; + } } static void DeleteStash(const std::string& base) { - if (base.empty()) { - return; - } + if (base.empty()) return; - fprintf(stderr, "deleting stash %s\n", base.c_str()); + LOG(INFO) << "deleting stash " << base; - std::string dirname = GetStashFileName(base, "", ""); - EnumerateStash(dirname, DeleteFile, nullptr); + std::string dirname = GetStashFileName(base, "", ""); + EnumerateStash(dirname, DeleteFile); - if (rmdir(dirname.c_str()) == -1) { - if (errno != ENOENT && errno != ENOTDIR) { - fprintf(stderr, "rmdir \"%s\" failed: %s\n", dirname.c_str(), strerror(errno)); - } + if (rmdir(dirname.c_str()) == -1) { + if (errno != ENOENT && errno != ENOTDIR) { + PLOG(ERROR) << "rmdir \"" << dirname << "\" failed"; } + } } -static int LoadStash(CommandParameters& params, const std::string& base, const std::string& id, - bool verify, size_t* blocks, std::vector<uint8_t>& buffer, bool printnoent) { +static int LoadStash(CommandParameters& params, const std::string& id, bool verify, size_t* blocks, + std::vector<uint8_t>& buffer, bool printnoent) { // In verify mode, if source range_set was saved for the given hash, // check contents in the source blocks first. If the check fails, // search for the stashed files on /cache as usual. @@ -567,52 +627,47 @@ static int LoadStash(CommandParameters& params, const std::string& base, const s allocate(src.size * BLOCKSIZE, buffer); if (ReadBlocks(src, buffer, params.fd) == -1) { - fprintf(stderr, "failed to read source blocks in stash map.\n"); + LOG(ERROR) << "failed to read source blocks in stash map."; return -1; } if (VerifyBlocks(id, buffer, src.size, true) != 0) { - fprintf(stderr, "failed to verify loaded source blocks in stash map.\n"); + LOG(ERROR) << "failed to verify loaded source blocks in stash map."; + PrintHashForCorruptedStashedBlocks(id, buffer, src); return -1; } return 0; } } - if (base.empty()) { - return -1; - } - size_t blockcount = 0; if (!blocks) { blocks = &blockcount; } - std::string fn = GetStashFileName(base, id, ""); + std::string fn = GetStashFileName(params.stashbase, id, ""); struct stat sb; int res = stat(fn.c_str(), &sb); if (res == -1) { if (errno != ENOENT || printnoent) { - fprintf(stderr, "stat \"%s\" failed: %s\n", fn.c_str(), strerror(errno)); + PLOG(ERROR) << "stat \"" << fn << "\" failed"; + PrintHashForMissingStashedBlocks(id, params.fd); } return -1; } - fprintf(stderr, " loading %s\n", fn.c_str()); + LOG(INFO) << " loading " << fn; if ((sb.st_size % BLOCKSIZE) != 0) { - fprintf(stderr, "%s size %" PRId64 " not multiple of block size %d", - fn.c_str(), static_cast<int64_t>(sb.st_size), BLOCKSIZE); + LOG(ERROR) << fn << " size " << sb.st_size << " not multiple of block size " << BLOCKSIZE; return -1; } - int fd = TEMP_FAILURE_RETRY(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)); + PLOG(ERROR) << "open \"" << fn << "\" failed"; return -1; } @@ -625,8 +680,15 @@ static int LoadStash(CommandParameters& params, const std::string& base, const s *blocks = sb.st_size / BLOCKSIZE; if (verify && VerifyBlocks(id, buffer, *blocks, true) != 0) { - fprintf(stderr, "unexpected contents in %s\n", fn.c_str()); - DeleteFile(fn, nullptr); + LOG(ERROR) << "unexpected contents in " << fn; + if (stash_map.find(id) == stash_map.end()) { + LOG(ERROR) << "failed to find source blocks number for stash " << id + << " when executing command: " << params.cmdname; + } else { + const RangeSet& src = stash_map[id]; + PrintHashForCorruptedStashedBlocks(id, buffer, src); + } + DeleteFile(fn); return -1; } @@ -634,13 +696,13 @@ static int LoadStash(CommandParameters& params, const std::string& base, const s } static int WriteStash(const std::string& base, const std::string& id, int blocks, - std::vector<uint8_t>& buffer, bool checkspace, bool *exists) { + std::vector<uint8_t>& buffer, bool checkspace, bool *exists) { if (base.empty()) { return -1; } if (checkspace && CacheSizeCheck(blocks * BLOCKSIZE) != 0) { - fprintf(stderr, "not enough space to write stash\n"); + LOG(ERROR) << "not enough space to write stash"; return -1; } @@ -655,7 +717,7 @@ static int WriteStash(const std::string& base, const std::string& id, int blocks // The file already exists and since the name is the hash of the contents, // it's safe to assume the contents are identical (accidental hash collisions // are unlikely) - fprintf(stderr, " skipping %d existing blocks in %s\n", blocks, cn.c_str()); + LOG(INFO) << " skipping " << blocks << " existing blocks in " << cn; *exists = true; return 0; } @@ -663,13 +725,17 @@ static int WriteStash(const std::string& base, const std::string& id, int blocks *exists = false; } - fprintf(stderr, " writing %d blocks to %s\n", blocks, cn.c_str()); - - int fd = TEMP_FAILURE_RETRY(open(fn.c_str(), O_WRONLY | O_CREAT | O_TRUNC, STASH_FILE_MODE)); - unique_fd fd_holder(fd); + LOG(INFO) << " writing " << blocks << " blocks to " << cn; + 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)); + PLOG(ERROR) << "failed to create \"" << fn << "\""; + return -1; + } + + if (fchown(fd, AID_SYSTEM, AID_SYSTEM) != 0) { // system user + PLOG(ERROR) << "failed to chown \"" << fn << "\""; return -1; } @@ -679,29 +745,27 @@ static int WriteStash(const std::string& base, const std::string& id, int blocks if (ota_fsync(fd) == -1) { failure_type = kFsyncFailure; - fprintf(stderr, "fsync \"%s\" failed: %s\n", fn.c_str(), strerror(errno)); + PLOG(ERROR) << "fsync \"" << fn << "\" failed"; return -1; } if (rename(fn.c_str(), cn.c_str()) == -1) { - fprintf(stderr, "rename(\"%s\", \"%s\") failed: %s\n", fn.c_str(), cn.c_str(), - strerror(errno)); + PLOG(ERROR) << "rename(\"" << fn << "\", \"" << cn << "\") failed"; return -1; } std::string dname = GetStashFileName(base, "", ""); - int dfd = TEMP_FAILURE_RETRY(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) { failure_type = kFileOpenFailure; - fprintf(stderr, "failed to open \"%s\" failed: %s\n", dname.c_str(), strerror(errno)); + PLOG(ERROR) << "failed to open \"" << dname << "\" failed"; return -1; } if (ota_fsync(dfd) == -1) { failure_type = kFsyncFailure; - fprintf(stderr, "fsync \"%s\" failed: %s\n", dname.c_str(), strerror(errno)); + PLOG(ERROR) << "fsync \"" << dname << "\" failed"; return -1; } @@ -712,121 +776,94 @@ static int WriteStash(const std::string& base, const std::string& id, int blocks // hash enough space for the expected amount of blocks we need to store. Returns // >0 if we created the directory, zero if it existed already, and <0 of failure. -static int CreateStash(State* state, int maxblocks, const char* blockdev, std::string& base) { - if (blockdev == nullptr) { - return -1; - } - - // Stash directory should be different for each partition to avoid conflicts - // when updating multiple partitions at the same time, so we use the hash of - // the block device name as the base directory - uint8_t digest[SHA_DIGEST_LENGTH]; - SHA1(reinterpret_cast<const uint8_t*>(blockdev), strlen(blockdev), digest); - base = print_sha1(digest); - - std::string dirname = GetStashFileName(base, "", ""); - struct stat sb; - int res = stat(dirname.c_str(), &sb); - - if (res == -1 && errno != ENOENT) { - ErrorAbort(state, kStashCreationFailure, "stat \"%s\" failed: %s\n", - dirname.c_str(), strerror(errno)); - return -1; - } else if (res != 0) { - fprintf(stderr, "creating stash %s\n", dirname.c_str()); - res = mkdir(dirname.c_str(), STASH_DIRECTORY_MODE); - - if (res != 0) { - ErrorAbort(state, kStashCreationFailure, "mkdir \"%s\" failed: %s\n", - dirname.c_str(), strerror(errno)); - return -1; - } - - if (CacheSizeCheck(maxblocks * BLOCKSIZE) != 0) { - ErrorAbort(state, kStashCreationFailure, "not enough space for stash\n"); - return -1; - } +static int CreateStash(State* state, size_t maxblocks, const std::string& blockdev, + std::string& base) { + if (blockdev.empty()) { + return -1; + } + + // Stash directory should be different for each partition to avoid conflicts + // when updating multiple partitions at the same time, so we use the hash of + // the block device name as the base directory + uint8_t digest[SHA_DIGEST_LENGTH]; + SHA1(reinterpret_cast<const uint8_t*>(blockdev.data()), blockdev.size(), digest); + base = print_sha1(digest); + + std::string dirname = GetStashFileName(base, "", ""); + struct stat sb; + int res = stat(dirname.c_str(), &sb); + size_t max_stash_size = maxblocks * BLOCKSIZE; + + if (res == -1 && errno != ENOENT) { + ErrorAbort(state, kStashCreationFailure, "stat \"%s\" failed: %s\n", dirname.c_str(), + strerror(errno)); + return -1; + } else if (res != 0) { + LOG(INFO) << "creating stash " << dirname; + res = mkdir(dirname.c_str(), STASH_DIRECTORY_MODE); - return 1; // Created directory + if (res != 0) { + ErrorAbort(state, kStashCreationFailure, "mkdir \"%s\" failed: %s\n", dirname.c_str(), + strerror(errno)); + return -1; } - fprintf(stderr, "using existing stash %s\n", dirname.c_str()); - - // If the directory already exists, calculate the space already allocated to - // stash files and check if there's enough for all required blocks. Delete any - // partially completed stash files first. - - EnumerateStash(dirname, DeletePartial, nullptr); - int size = 0; - EnumerateStash(dirname, UpdateFileSize, &size); - - size = maxblocks * BLOCKSIZE - size; - - if (size > 0 && CacheSizeCheck(size) != 0) { - ErrorAbort(state, kStashCreationFailure, "not enough space for stash (%d more needed)\n", - size); - return -1; + if (chown(dirname.c_str(), AID_SYSTEM, AID_SYSTEM) != 0) { // system user + ErrorAbort(state, kStashCreationFailure, "chown \"%s\" failed: %s\n", dirname.c_str(), + strerror(errno)); + return -1; } - return 0; // Using existing directory -} - -static int SaveStash(CommandParameters& params, const std::string& base, - std::vector<uint8_t>& buffer, int fd, bool usehash) { - - // <stash_id> <src_range> - if (params.cpos + 1 >= params.tokens.size()) { - fprintf(stderr, "missing id and/or src range fields in stash command\n"); - return -1; + if (CacheSizeCheck(max_stash_size) != 0) { + ErrorAbort(state, kStashCreationFailure, "not enough space for stash (%zu needed)\n", + max_stash_size); + return -1; } - const std::string& id = params.tokens[params.cpos++]; - size_t blocks = 0; - if (usehash && LoadStash(params, base, id, true, &blocks, buffer, false) == 0) { - // Stash file already exists and has expected contents. Do not - // read from source again, as the source may have been already - // overwritten during a previous attempt. - return 0; - } + return 1; // Created directory + } - RangeSet src; - parse_range(params.tokens[params.cpos++], src); + LOG(INFO) << "using existing stash " << dirname; - allocate(src.size * BLOCKSIZE, buffer); - if (ReadBlocks(src, buffer, fd) == -1) { - return -1; + // If the directory already exists, calculate the space already allocated to stash files and check + // if there's enough for all required blocks. Delete any partially completed stash files first. + EnumerateStash(dirname, [](const std::string& fn) { + if (android::base::EndsWith(fn, ".partial")) { + DeleteFile(fn); } - blocks = src.size; + }); - if (usehash && VerifyBlocks(id, buffer, blocks, true) != 0) { - // Source blocks have unexpected contents. If we actually need this - // data later, this is an unrecoverable error. However, the command - // that uses the data may have already completed previously, so the - // possible failure will occur during source block verification. - fprintf(stderr, "failed to load source blocks for stash %s\n", id.c_str()); - return 0; + size_t existing = 0; + EnumerateStash(dirname, [&existing](const std::string& fn) { + if (fn.empty()) return; + struct stat sb; + if (stat(fn.c_str(), &sb) == -1) { + PLOG(ERROR) << "stat \"" << fn << "\" failed"; + return; } + existing += static_cast<size_t>(sb.st_size); + }); - // In verify mode, save source range_set instead of stashing blocks. - if (!params.canwrite && usehash) { - stash_map[id] = src; - return 0; + if (max_stash_size > existing) { + size_t needed = max_stash_size - existing; + if (CacheSizeCheck(needed) != 0) { + ErrorAbort(state, kStashCreationFailure, "not enough space for stash (%zu more needed)\n", + needed); + return -1; } + } - fprintf(stderr, "stashing %zu blocks to %s\n", blocks, id.c_str()); - params.stashed += blocks; - return WriteStash(base, id, blocks, buffer, false, nullptr); + return 0; // Using existing directory } static int FreeStash(const std::string& base, const std::string& id) { - if (base.empty() || id.empty()) { - return -1; - } + if (base.empty() || id.empty()) { + return -1; + } - std::string fn = GetStashFileName(base, id, ""); - DeleteFile(fn, nullptr); + DeleteFile(GetStashFileName(base, id, "")); - return 0; + return 0; } static void MoveRange(std::vector<uint8_t>& dest, const RangeSet& locs, @@ -858,41 +895,39 @@ static void MoveRange(std::vector<uint8_t>& dest, const RangeSet& locs, // <tgt_range> <src_block_count> <src_range> <src_loc> <[stash_id:stash_range] ...> // (loads data from both source image and stashes) // -// On return, buffer is filled with the loaded source data (rearranged -// and combined with stashed data as necessary). buffer may be -// reallocated if needed to accommodate the source data. *tgt is the -// target RangeSet. Any stashes required are loaded using LoadStash. +// On return, params.buffer is filled with the loaded source data (rearranged and combined with +// stashed data as necessary). buffer may be reallocated if needed to accommodate the source data. +// *tgt is the target RangeSet. Any stashes required are loaded using LoadStash. static int LoadSrcTgtVersion2(CommandParameters& params, RangeSet& tgt, size_t& src_blocks, - std::vector<uint8_t>& buffer, int fd, const std::string& stashbase, bool* overlap) { + bool* overlap) { // At least it needs to provide three parameters: <tgt_range>, // <src_block_count> and "-"/<src_range>. if (params.cpos + 2 >= params.tokens.size()) { - fprintf(stderr, "invalid parameters\n"); + LOG(ERROR) << "invalid parameters"; return -1; } // <tgt_range> - parse_range(params.tokens[params.cpos++], tgt); + tgt = parse_range(params.tokens[params.cpos++]); // <src_block_count> const std::string& token = params.tokens[params.cpos++]; if (!android::base::ParseUint(token.c_str(), &src_blocks)) { - fprintf(stderr, "invalid src_block_count \"%s\"\n", token.c_str()); + LOG(ERROR) << "invalid src_block_count \"" << token << "\""; return -1; } - allocate(src_blocks * BLOCKSIZE, buffer); + allocate(src_blocks * BLOCKSIZE, params.buffer); // "-" or <src_range> [<src_loc>] if (params.tokens[params.cpos] == "-") { // no source ranges, only stashes params.cpos++; } else { - RangeSet src; - parse_range(params.tokens[params.cpos++], src); - int res = ReadBlocks(src, buffer, fd); + RangeSet src = parse_range(params.tokens[params.cpos++]); + int res = ReadBlocks(src, params.buffer, params.fd); if (overlap) { *overlap = range_overlaps(src, tgt); @@ -907,9 +942,8 @@ static int LoadSrcTgtVersion2(CommandParameters& params, RangeSet& tgt, size_t& return 0; } - RangeSet locs; - parse_range(params.tokens[params.cpos++], locs); - MoveRange(buffer, locs, buffer); + RangeSet locs = parse_range(params.tokens[params.cpos++]); + MoveRange(params.buffer, locs, params.buffer); } // <[stash_id:stash_range]> @@ -919,51 +953,59 @@ static int LoadSrcTgtVersion2(CommandParameters& params, RangeSet& tgt, size_t& // stashed data should go. std::vector<std::string> tokens = android::base::Split(params.tokens[params.cpos++], ":"); if (tokens.size() != 2) { - fprintf(stderr, "invalid parameter\n"); + LOG(ERROR) << "invalid parameter"; return -1; } std::vector<uint8_t> stash; - int res = LoadStash(params, stashbase, tokens[0], false, nullptr, stash, true); + int res = LoadStash(params, tokens[0], false, nullptr, stash, true); if (res == -1) { // These source blocks will fail verification if used later, but we // will let the caller decide if this is a fatal failure - fprintf(stderr, "failed to load stash %s\n", tokens[0].c_str()); + LOG(ERROR) << "failed to load stash " << tokens[0]; continue; } - RangeSet locs; - parse_range(tokens[1], locs); + RangeSet locs = parse_range(tokens[1]); - MoveRange(buffer, locs, stash); + MoveRange(params.buffer, locs, stash); } return 0; } -// Do a source/target load for move/bsdiff/imgdiff in version 3. -// -// Parameters are the same as for LoadSrcTgtVersion2, except for 'onehash', which -// tells the function whether to expect separate source and targe block hashes, or -// if they are both the same and only one hash should be expected, and -// 'isunresumable', which receives a non-zero value if block verification fails in -// a way that the update cannot be resumed anymore. -// -// If the function is unable to load the necessary blocks or their contents don't -// match the hashes, the return value is -1 and the command should be aborted. -// -// If the return value is 1, the command has already been completed according to -// the contents of the target blocks, and should not be performed again. -// -// If the return value is 0, source blocks have expected content and the command -// can be performed. - +/** + * Do a source/target load for move/bsdiff/imgdiff in version 3. + * + * We expect to parse the remainder of the parameter tokens as one of: + * + * <tgt_range> <src_block_count> <src_range> + * (loads data from source image only) + * + * <tgt_range> <src_block_count> - <[stash_id:stash_range] ...> + * (loads data from stashes only) + * + * <tgt_range> <src_block_count> <src_range> <src_loc> <[stash_id:stash_range] ...> + * (loads data from both source image and stashes) + * + * Parameters are the same as for LoadSrcTgtVersion2, except for 'onehash', which tells the function + * whether to expect separate source and targe block hashes, or if they are both the same and only + * one hash should be expected, and 'isunresumable', which receives a non-zero value if block + * verification fails in a way that the update cannot be resumed anymore. + * + * If the function is unable to load the necessary blocks or their contents don't match the hashes, + * the return value is -1 and the command should be aborted. + * + * If the return value is 1, the command has already been completed according to the contents of the + * target blocks, and should not be performed again. + * + * If the return value is 0, source blocks have expected content and the command can be performed. + */ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t& src_blocks, - bool onehash, bool& overlap) { - + bool onehash, bool& overlap) { if (params.cpos >= params.tokens.size()) { - fprintf(stderr, "missing source hash\n"); + LOG(ERROR) << "missing source hash"; return -1; } @@ -974,14 +1016,13 @@ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t& tgthash = srchash; } else { if (params.cpos >= params.tokens.size()) { - fprintf(stderr, "missing target hash\n"); + LOG(ERROR) << "missing target hash"; return -1; } 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, &overlap) == -1) { return -1; } @@ -992,7 +1033,7 @@ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t& } if (VerifyBlocks(tgthash, tgtbuffer, tgt.size, false) == 0) { - // Target blocks already have expected content, command should be skipped + // Target blocks already have expected content, command should be skipped. return 1; } @@ -1001,128 +1042,150 @@ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t& // resume from possible write errors. In verify mode, we can skip stashing // because the source blocks won't be overwritten. if (overlap && params.canwrite) { - fprintf(stderr, "stashing %zu overlapping blocks to %s\n", src_blocks, - srchash.c_str()); + LOG(INFO) << "stashing " << src_blocks << " overlapping blocks to " << srchash; bool stash_exists = false; if (WriteStash(params.stashbase, srchash, src_blocks, params.buffer, true, &stash_exists) != 0) { - fprintf(stderr, "failed to stash overlapping source blocks\n"); + LOG(ERROR) << "failed to stash overlapping source blocks"; return -1; } params.stashed += src_blocks; - // Can be deleted when the write has completed + // Can be deleted when the write has completed. if (!stash_exists) { params.freestash = srchash; } } - // Source blocks have expected content, command can proceed + // Source blocks have expected content, command can proceed. return 0; } - if (overlap && LoadStash(params, params.stashbase, srchash, true, nullptr, params.buffer, - true) == 0) { + if (overlap && LoadStash(params, srchash, true, nullptr, params.buffer, true) == 0) { // Overlapping source blocks were previously stashed, command can proceed. // We are recovering from an interrupted command, so we don't know if the // stash can safely be deleted after this command. return 0; } - // Valid source data not available, update cannot be resumed - fprintf(stderr, "partition has unexpected contents\n"); + // Valid source data not available, update cannot be resumed. + LOG(ERROR) << "partition has unexpected contents"; + PrintHashForCorruptedSourceBlocks(params, params.buffer); + params.isunresumable = true; return -1; } static int PerformCommandMove(CommandParameters& params) { - size_t blocks = 0; - bool overlap = false; - int status = 0; - RangeSet tgt; + size_t blocks = 0; + bool overlap = false; + RangeSet tgt; + int status = LoadSrcTgtVersion3(params, tgt, blocks, true, overlap); - if (params.version == 1) { - status = LoadSrcTgtVersion1(params, tgt, blocks, params.buffer, params.fd); - } else if (params.version == 2) { - status = LoadSrcTgtVersion2(params, tgt, blocks, params.buffer, params.fd, - params.stashbase, nullptr); - } else if (params.version >= 3) { - status = LoadSrcTgtVersion3(params, tgt, blocks, true, overlap); - } + if (status == -1) { + LOG(ERROR) << "failed to read blocks for move"; + return -1; + } - if (status == -1) { - fprintf(stderr, "failed to read blocks for move\n"); - return -1; - } + if (status == 0) { + params.foundwrites = true; + } else if (params.foundwrites) { + LOG(WARNING) << "warning: commands executed out of order [" << params.cmdname << "]"; + } + if (params.canwrite) { if (status == 0) { - params.foundwrites = true; - } else if (params.foundwrites) { - fprintf(stderr, "warning: commands executed out of order [%s]\n", params.cmdname); + LOG(INFO) << " moving " << blocks << " blocks"; + + if (WriteBlocks(tgt, params.buffer, params.fd) == -1) { + return -1; + } + } else { + LOG(INFO) << "skipping " << blocks << " already moved blocks"; } + } - if (params.canwrite) { - if (status == 0) { - fprintf(stderr, " moving %zu blocks\n", blocks); + if (!params.freestash.empty()) { + FreeStash(params.stashbase, params.freestash); + params.freestash.clear(); + } - if (WriteBlocks(tgt, params.buffer, params.fd) == -1) { - return -1; - } - } else { - fprintf(stderr, "skipping %zu already moved blocks\n", blocks); - } + params.written += tgt.size; - } + return 0; +} - if (!params.freestash.empty()) { - FreeStash(params.stashbase, params.freestash); - params.freestash.clear(); - } +static int PerformCommandStash(CommandParameters& params) { + // <stash_id> <src_range> + if (params.cpos + 1 >= params.tokens.size()) { + LOG(ERROR) << "missing id and/or src range fields in stash command"; + return -1; + } - params.written += tgt.size; + const std::string& id = params.tokens[params.cpos++]; + size_t blocks = 0; + if (LoadStash(params, id, true, &blocks, params.buffer, false) == 0) { + // Stash file already exists and has expected contents. Do not read from source again, as the + // source may have been already overwritten during a previous attempt. + return 0; + } + RangeSet src = parse_range(params.tokens[params.cpos++]); + + allocate(src.size * BLOCKSIZE, params.buffer); + if (ReadBlocks(src, params.buffer, params.fd) == -1) { + return -1; + } + blocks = src.size; + stash_map[id] = src; + + if (VerifyBlocks(id, params.buffer, blocks, true) != 0) { + // Source blocks have unexpected contents. If we actually need this data later, this is an + // unrecoverable error. However, the command that uses the data may have already completed + // previously, so the possible failure will occur during source block verification. + LOG(ERROR) << "failed to load source blocks for stash " << id; return 0; -} + } -static int PerformCommandStash(CommandParameters& params) { - return SaveStash(params, params.stashbase, params.buffer, params.fd, - (params.version >= 3)); + // In verify mode, we don't need to stash any blocks. + if (!params.canwrite) { + return 0; + } + + LOG(INFO) << "stashing " << blocks << " blocks to " << id; + params.stashed += blocks; + return WriteStash(params.stashbase, id, blocks, params.buffer, false, nullptr); } static int PerformCommandFree(CommandParameters& params) { - // <stash_id> - if (params.cpos >= params.tokens.size()) { - fprintf(stderr, "missing stash id in free command\n"); - return -1; - } + // <stash_id> + if (params.cpos >= params.tokens.size()) { + LOG(ERROR) << "missing stash id in free command"; + return -1; + } - const std::string& id = params.tokens[params.cpos++]; + const std::string& id = params.tokens[params.cpos++]; + stash_map.erase(id); - if (!params.canwrite && stash_map.find(id) != stash_map.end()) { - stash_map.erase(id); - return 0; - } - - if (params.createdstash || params.canwrite) { - return FreeStash(params.stashbase, id); - } + if (params.createdstash || params.canwrite) { + return FreeStash(params.stashbase, id); + } - return 0; + return 0; } static int PerformCommandZero(CommandParameters& params) { if (params.cpos >= params.tokens.size()) { - fprintf(stderr, "missing target blocks for zero\n"); + LOG(ERROR) << "missing target blocks for zero"; return -1; } - RangeSet tgt; - parse_range(params.tokens[params.cpos++], tgt); + RangeSet tgt = parse_range(params.tokens[params.cpos++]); - fprintf(stderr, " zeroing %zu blocks\n", tgt.size); + LOG(INFO) << " zeroing " << tgt.size << " blocks"; allocate(BLOCKSIZE, params.buffer); memset(params.buffer.data(), 0, BLOCKSIZE); @@ -1159,15 +1222,14 @@ static int PerformCommandZero(CommandParameters& params) { static int PerformCommandNew(CommandParameters& params) { if (params.cpos >= params.tokens.size()) { - fprintf(stderr, "missing target blocks for new\n"); + LOG(ERROR) << "missing target blocks for new"; return -1; } - RangeSet tgt; - parse_range(params.tokens[params.cpos++], tgt); + RangeSet tgt = parse_range(params.tokens[params.cpos++]); if (params.canwrite) { - fprintf(stderr, " writing %zu blocks of new data\n", tgt.size); + LOG(INFO) << " writing " << tgt.size << " blocks of new data"; RangeSinkState rss(tgt); rss.fd = params.fd; @@ -1203,55 +1265,43 @@ static int PerformCommandDiff(CommandParameters& params) { // <offset> <length> if (params.cpos + 1 >= params.tokens.size()) { - fprintf(stderr, "missing patch offset or length for %s\n", params.cmdname); + LOG(ERROR) << "missing patch offset or length for " << params.cmdname; return -1; } size_t offset; if (!android::base::ParseUint(params.tokens[params.cpos++].c_str(), &offset)) { - fprintf(stderr, "invalid patch offset\n"); + LOG(ERROR) << "invalid patch offset"; return -1; } size_t len; if (!android::base::ParseUint(params.tokens[params.cpos++].c_str(), &len)) { - fprintf(stderr, "invalid patch offset\n"); + LOG(ERROR) << "invalid patch len"; return -1; } RangeSet tgt; size_t blocks = 0; bool overlap = false; - int status = 0; - if (params.version == 1) { - status = LoadSrcTgtVersion1(params, tgt, blocks, params.buffer, params.fd); - } else if (params.version == 2) { - status = LoadSrcTgtVersion2(params, tgt, blocks, params.buffer, params.fd, - params.stashbase, nullptr); - } else if (params.version >= 3) { - status = LoadSrcTgtVersion3(params, tgt, blocks, false, overlap); - } + int status = LoadSrcTgtVersion3(params, tgt, blocks, false, overlap); if (status == -1) { - fprintf(stderr, "failed to read blocks for diff\n"); + LOG(ERROR) << "failed to read blocks for diff"; return -1; } if (status == 0) { params.foundwrites = true; } else if (params.foundwrites) { - fprintf(stderr, "warning: commands executed out of order [%s]\n", params.cmdname); + LOG(WARNING) << "warning: commands executed out of order [" << params.cmdname << "]"; } if (params.canwrite) { if (status == 0) { - fprintf(stderr, "patching %zu blocks to %zu\n", blocks, tgt.size); - - Value patch_value; - patch_value.type = VAL_BLOB; - patch_value.size = len; - patch_value.data = (char*) (params.patch_start + offset); - + LOG(INFO) << "patching " << blocks << " blocks to " << tgt.size; + Value patch_value(VAL_BLOB, + std::string(reinterpret_cast<const char*>(params.patch_start + offset), len)); RangeSinkState rss(tgt); rss.fd = params.fd; rss.p_block = 0; @@ -1269,24 +1319,24 @@ static int PerformCommandDiff(CommandParameters& params) { if (params.cmdname[0] == 'i') { // imgdiff if (ApplyImagePatch(params.buffer.data(), blocks * BLOCKSIZE, &patch_value, &RangeSinkWrite, &rss, nullptr, nullptr) != 0) { - fprintf(stderr, "Failed to apply image patch.\n"); + LOG(ERROR) << "Failed to apply image patch."; return -1; } } else { if (ApplyBSDiffPatch(params.buffer.data(), blocks * BLOCKSIZE, &patch_value, 0, &RangeSinkWrite, &rss, nullptr) != 0) { - fprintf(stderr, "Failed to apply bsdiff patch.\n"); + LOG(ERROR) << "Failed to apply bsdiff patch."; return -1; } } // We expect the output of the patcher to fill the tgt ranges exactly. if (rss.p_block != tgt.count || rss.p_remain != 0) { - fprintf(stderr, "range sink underrun?\n"); + LOG(ERROR) << "range sink underrun?"; } } else { - fprintf(stderr, "skipping %zu blocks already patched to %zu [%s]\n", - blocks, tgt.size, params.cmdline); + LOG(INFO) << "skipping " << blocks << " blocks already patched to " << tgt.size + << " [" << params.cmdline << "]"; } } @@ -1307,25 +1357,24 @@ static int PerformCommandErase(CommandParameters& params) { struct stat sb; if (fstat(params.fd, &sb) == -1) { - fprintf(stderr, "failed to fstat device to erase: %s\n", strerror(errno)); + PLOG(ERROR) << "failed to fstat device to erase"; return -1; } if (!S_ISBLK(sb.st_mode)) { - fprintf(stderr, "not a block device; skipping erase\n"); + LOG(ERROR) << "not a block device; skipping erase"; return -1; } if (params.cpos >= params.tokens.size()) { - fprintf(stderr, "missing target blocks for erase\n"); + LOG(ERROR) << "missing target blocks for erase"; return -1; } - RangeSet tgt; - parse_range(params.tokens[params.cpos++], tgt); + RangeSet tgt = parse_range(params.tokens[params.cpos++]); if (params.canwrite) { - fprintf(stderr, " erasing %zu blocks\n", tgt.size); + LOG(INFO) << " erasing " << tgt.size << " blocks"; for (size_t i = 0; i < tgt.count; ++i) { uint64_t blocks[2]; @@ -1335,7 +1384,7 @@ static int PerformCommandErase(CommandParameters& params) { blocks[1] = (tgt.pos[i * 2 + 1] - tgt.pos[i * 2]) * (uint64_t) BLOCKSIZE; if (ioctl(params.fd, BLKDISCARD, &blocks) == -1) { - fprintf(stderr, "BLKDISCARD ioctl failed: %s\n", strerror(errno)); + PLOG(ERROR) << "BLKDISCARD ioctl failed"; return -1; } } @@ -1352,339 +1401,292 @@ struct Command { CommandFunction f; }; -// CompareCommands and CompareCommandNames are for the hash table - -static int CompareCommands(const void* c1, const void* c2) { - return strcmp(((const Command*) c1)->name, ((const Command*) c2)->name); -} - -static int CompareCommandNames(const void* c1, const void* c2) { - return strcmp(((const Command*) c1)->name, (const char*) c2); -} - -// HashString is used to hash command names for the hash table - -static unsigned int HashString(const char *s) { - unsigned int hash = 0; - if (s) { - while (*s) { - hash = hash * 33 + *s++; - } - } - return hash; -} - // args: // - block device (or file) to modify in-place // - transfer list (blob) // - new data stream (filename within package.zip) // - patch stream (filename within package.zip, must be uncompressed) -static Value* PerformBlockImageUpdate(const char* name, State* state, int /* argc */, Expr* argv[], - const Command* commands, size_t cmdcount, bool dryrun) { - CommandParameters params; - memset(¶ms, 0, sizeof(params)); - params.canwrite = !dryrun; - - fprintf(stderr, "performing %s\n", dryrun ? "verification" : "update"); - if (state->is_retry) { - is_retry = true; - fprintf(stderr, "This update is a retry.\n"); - } - - Value* blockdev_filename = nullptr; - Value* transfer_list_value = nullptr; - Value* new_data_fn = nullptr; - Value* patch_data_fn = nullptr; - if (ReadValueArgs(state, argv, 4, &blockdev_filename, &transfer_list_value, - &new_data_fn, &patch_data_fn) < 0) { - return StringValue(strdup("")); - } - std::unique_ptr<Value, decltype(&FreeValue)> blockdev_filename_holder(blockdev_filename, - FreeValue); - std::unique_ptr<Value, decltype(&FreeValue)> transfer_list_value_holder(transfer_list_value, - FreeValue); - std::unique_ptr<Value, decltype(&FreeValue)> new_data_fn_holder(new_data_fn, FreeValue); - std::unique_ptr<Value, decltype(&FreeValue)> patch_data_fn_holder(patch_data_fn, FreeValue); - - if (blockdev_filename->type != VAL_STRING) { - ErrorAbort(state, kArgsParsingFailure, "blockdev_filename argument to %s must be string", - name); - return StringValue(strdup("")); - } - if (transfer_list_value->type != VAL_BLOB) { - ErrorAbort(state, kArgsParsingFailure, "transfer_list argument to %s must be blob", name); - return StringValue(strdup("")); - } - if (new_data_fn->type != VAL_STRING) { - ErrorAbort(state, kArgsParsingFailure, "new_data_fn argument to %s must be string", name); - return StringValue(strdup("")); - } - if (patch_data_fn->type != VAL_STRING) { - ErrorAbort(state, kArgsParsingFailure, "patch_data_fn argument to %s must be string", - name); - return StringValue(strdup("")); - } - - UpdaterInfo* ui = reinterpret_cast<UpdaterInfo*>(state->cookie); - - if (ui == nullptr) { - return StringValue(strdup("")); - } - - FILE* cmd_pipe = ui->cmd_pipe; - ZipArchive* za = ui->package_zip; - - if (cmd_pipe == nullptr || za == nullptr) { - return StringValue(strdup("")); - } - - const ZipEntry* patch_entry = mzFindZipEntry(za, patch_data_fn->data); - if (patch_entry == nullptr) { - fprintf(stderr, "%s(): no file \"%s\" in package", name, patch_data_fn->data); - return StringValue(strdup("")); - } - - params.patch_start = ui->package_zip_addr + mzGetZipEntryOffset(patch_entry); - const ZipEntry* new_entry = mzFindZipEntry(za, new_data_fn->data); - if (new_entry == nullptr) { - fprintf(stderr, "%s(): no file \"%s\" in package", name, new_data_fn->data); - return StringValue(strdup("")); - } - - params.fd = TEMP_FAILURE_RETRY(open(blockdev_filename->data, O_RDWR)); - unique_fd fd_holder(params.fd); +static Value* PerformBlockImageUpdate(const char* name, State* state, + const std::vector<std::unique_ptr<Expr>>& argv, + const Command* commands, size_t cmdcount, bool dryrun) { + CommandParameters params = {}; + params.canwrite = !dryrun; + + LOG(INFO) << "performing " << (dryrun ? "verification" : "update"); + if (state->is_retry) { + is_retry = true; + LOG(INFO) << "This update is a retry."; + } + if (argv.size() != 4) { + ErrorAbort(state, kArgsParsingFailure, "block_image_update expects 4 arguments, got %zu", + argv.size()); + return StringValue(""); + } + + std::vector<std::unique_ptr<Value>> args; + if (!ReadValueArgs(state, argv, &args)) { + return nullptr; + } + + const Value* blockdev_filename = args[0].get(); + const Value* transfer_list_value = args[1].get(); + const Value* new_data_fn = args[2].get(); + const Value* patch_data_fn = args[3].get(); + + if (blockdev_filename->type != VAL_STRING) { + ErrorAbort(state, kArgsParsingFailure, "blockdev_filename argument to %s must be string", name); + return StringValue(""); + } + if (transfer_list_value->type != VAL_BLOB) { + ErrorAbort(state, kArgsParsingFailure, "transfer_list argument to %s must be blob", name); + return StringValue(""); + } + if (new_data_fn->type != VAL_STRING) { + ErrorAbort(state, kArgsParsingFailure, "new_data_fn argument to %s must be string", name); + return StringValue(""); + } + if (patch_data_fn->type != VAL_STRING) { + ErrorAbort(state, kArgsParsingFailure, "patch_data_fn argument to %s must be string", name); + return StringValue(""); + } + + UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie); + if (ui == nullptr) { + return StringValue(""); + } + + FILE* cmd_pipe = ui->cmd_pipe; + ZipArchiveHandle za = ui->package_zip; + + if (cmd_pipe == nullptr || za == nullptr) { + return StringValue(""); + } + + ZipString path_data(patch_data_fn->data.c_str()); + ZipEntry patch_entry; + if (FindEntry(za, path_data, &patch_entry) != 0) { + LOG(ERROR) << name << "(): no file \"" << patch_data_fn->data << "\" in package"; + return StringValue(""); + } + + params.patch_start = ui->package_zip_addr + patch_entry.offset; + ZipString new_data(new_data_fn->data.c_str()); + ZipEntry new_entry; + if (FindEntry(za, new_data, &new_entry) != 0) { + LOG(ERROR) << name << "(): no file \"" << new_data_fn->data << "\" in package"; + return StringValue(""); + } + + params.fd.reset(TEMP_FAILURE_RETRY(ota_open(blockdev_filename->data.c_str(), O_RDWR))); + if (params.fd == -1) { + PLOG(ERROR) << "open \"" << blockdev_filename->data << "\" failed"; + return StringValue(""); + } + + if (params.canwrite) { + params.nti.za = za; + params.nti.entry = new_entry; + + pthread_mutex_init(¶ms.nti.mu, nullptr); + pthread_cond_init(¶ms.nti.cv, nullptr); + pthread_attr_t attr; + pthread_attr_init(&attr); + pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE); + + int error = pthread_create(¶ms.thread, &attr, unzip_new_data, ¶ms.nti); + if (error != 0) { + PLOG(ERROR) << "pthread_create failed"; + return StringValue(""); + } + } + + std::vector<std::string> lines = android::base::Split(transfer_list_value->data, "\n"); + if (lines.size() < 2) { + ErrorAbort(state, kArgsParsingFailure, "too few lines in the transfer list [%zd]\n", + lines.size()); + return StringValue(""); + } + + // First line in transfer list is the version number. + if (!android::base::ParseInt(lines[0], ¶ms.version, 3, 4)) { + LOG(ERROR) << "unexpected transfer list version [" << lines[0] << "]"; + return StringValue(""); + } + + LOG(INFO) << "blockimg version is " << params.version; + + // Second line in transfer list is the total number of blocks we expect to write. + size_t total_blocks; + if (!android::base::ParseUint(lines[1], &total_blocks)) { + ErrorAbort(state, kArgsParsingFailure, "unexpected block count [%s]\n", lines[1].c_str()); + return StringValue(""); + } + + if (total_blocks == 0) { + return StringValue("t"); + } + + size_t start = 2; + if (lines.size() < 4) { + ErrorAbort(state, kArgsParsingFailure, "too few lines in the transfer list [%zu]\n", + lines.size()); + return StringValue(""); + } + + // Third line is how many stash entries are needed simultaneously. + LOG(INFO) << "maximum stash entries " << lines[2]; + + // Fourth line is the maximum number of blocks that will be stashed simultaneously + size_t stash_max_blocks; + if (!android::base::ParseUint(lines[3], &stash_max_blocks)) { + ErrorAbort(state, kArgsParsingFailure, "unexpected maximum stash blocks [%s]\n", + lines[3].c_str()); + return StringValue(""); + } + + int res = CreateStash(state, stash_max_blocks, blockdev_filename->data, params.stashbase); + if (res == -1) { + return StringValue(""); + } + + params.createdstash = res; + + start += 2; + + // Build a map of the available commands + std::unordered_map<std::string, const Command*> cmd_map; + for (size_t i = 0; i < cmdcount; ++i) { + if (cmd_map.find(commands[i].name) != cmd_map.end()) { + LOG(ERROR) << "Error: command [" << commands[i].name << "] already exists in the cmd map."; + return StringValue(strdup("")); + } + cmd_map[commands[i].name] = &commands[i]; + } + + int rc = -1; + + // Subsequent lines are all individual transfer commands + for (auto it = lines.cbegin() + start; it != lines.cend(); it++) { + const std::string& line(*it); + if (line.empty()) continue; + + params.tokens = android::base::Split(line, " "); + params.cpos = 0; + params.cmdname = params.tokens[params.cpos++].c_str(); + params.cmdline = line.c_str(); + + if (cmd_map.find(params.cmdname) == cmd_map.end()) { + LOG(ERROR) << "unexpected command [" << params.cmdname << "]"; + goto pbiudone; + } + + const Command* cmd = cmd_map[params.cmdname]; - if (params.fd == -1) { - fprintf(stderr, "open \"%s\" failed: %s\n", blockdev_filename->data, strerror(errno)); - return StringValue(strdup("")); + if (cmd->f != nullptr && cmd->f(params) == -1) { + LOG(ERROR) << "failed to execute command [" << line << "]"; + goto pbiudone; } if (params.canwrite) { - params.nti.za = za; - params.nti.entry = new_entry; - - pthread_mutex_init(¶ms.nti.mu, nullptr); - pthread_cond_init(¶ms.nti.cv, nullptr); - pthread_attr_t attr; - pthread_attr_init(&attr); - pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE); - - int error = pthread_create(¶ms.thread, &attr, unzip_new_data, ¶ms.nti); - if (error != 0) { - fprintf(stderr, "pthread_create failed: %s\n", strerror(error)); - return StringValue(strdup("")); - } - } - - // Copy all the lines in transfer_list_value into std::string for - // processing. - const std::string transfer_list(transfer_list_value->data, transfer_list_value->size); - std::vector<std::string> lines = android::base::Split(transfer_list, "\n"); - if (lines.size() < 2) { - ErrorAbort(state, kArgsParsingFailure, "too few lines in the transfer list [%zd]\n", - lines.size()); - return StringValue(strdup("")); - } - - // First line in transfer list is the version number - if (!android::base::ParseInt(lines[0].c_str(), ¶ms.version, 1, 4)) { - fprintf(stderr, "unexpected transfer list version [%s]\n", lines[0].c_str()); - return StringValue(strdup("")); - } - - fprintf(stderr, "blockimg version is %d\n", params.version); - - // Second line in transfer list is the total number of blocks we expect to write - int total_blocks; - if (!android::base::ParseInt(lines[1].c_str(), &total_blocks, 0)) { - ErrorAbort(state, kArgsParsingFailure, "unexpected block count [%s]\n", lines[1].c_str()); - return StringValue(strdup("")); - } - - if (total_blocks == 0) { - return StringValue(strdup("t")); + if (ota_fsync(params.fd) == -1) { + failure_type = kFsyncFailure; + PLOG(ERROR) << "fsync failed"; + goto pbiudone; + } + fprintf(cmd_pipe, "set_progress %.4f\n", static_cast<double>(params.written) / total_blocks); + fflush(cmd_pipe); } + } - size_t start = 2; - if (params.version >= 2) { - if (lines.size() < 4) { - ErrorAbort(state, kArgsParsingFailure, "too few lines in the transfer list [%zu]\n", - lines.size()); - return StringValue(strdup("")); - } - - // Third line is how many stash entries are needed simultaneously - fprintf(stderr, "maximum stash entries %s\n", lines[2].c_str()); - - // Fourth line is the maximum number of blocks that will be stashed simultaneously - int stash_max_blocks; - if (!android::base::ParseInt(lines[3].c_str(), &stash_max_blocks, 0)) { - ErrorAbort(state, kArgsParsingFailure, "unexpected maximum stash blocks [%s]\n", - lines[3].c_str()); - return StringValue(strdup("")); - } + if (params.canwrite) { + pthread_join(params.thread, nullptr); - int res = CreateStash(state, stash_max_blocks, blockdev_filename->data, params.stashbase); - if (res == -1) { - return StringValue(strdup("")); - } + LOG(INFO) << "wrote " << params.written << " blocks; expected " << total_blocks; + LOG(INFO) << "stashed " << params.stashed << " blocks"; + LOG(INFO) << "max alloc needed was " << params.buffer.size(); - params.createdstash = res; - - start += 2; + const char* partition = strrchr(blockdev_filename->data.c_str(), '/'); + if (partition != nullptr && *(partition + 1) != 0) { + fprintf(cmd_pipe, "log bytes_written_%s: %zu\n", partition + 1, params.written * BLOCKSIZE); + fprintf(cmd_pipe, "log bytes_stashed_%s: %zu\n", partition + 1, params.stashed * BLOCKSIZE); + fflush(cmd_pipe); } + // Delete stash only after successfully completing the update, as it may contain blocks needed + // to complete the update later. + DeleteStash(params.stashbase); + } else { + LOG(INFO) << "verified partition contents; update may be resumed"; + } - // Build a hash table of the available commands - HashTable* cmdht = mzHashTableCreate(cmdcount, nullptr); - std::unique_ptr<HashTable, decltype(&mzHashTableFree)> cmdht_holder(cmdht, mzHashTableFree); - - for (size_t i = 0; i < cmdcount; ++i) { - unsigned int cmdhash = HashString(commands[i].name); - mzHashTableLookup(cmdht, cmdhash, (void*) &commands[i], CompareCommands, true); - } - - int rc = -1; - - // Subsequent lines are all individual transfer commands - for (auto it = lines.cbegin() + start; it != lines.cend(); it++) { - const std::string& line_str(*it); - if (line_str.empty()) { - continue; - } - - params.tokens = android::base::Split(line_str, " "); - params.cpos = 0; - params.cmdname = params.tokens[params.cpos++].c_str(); - params.cmdline = line_str.c_str(); - - unsigned int cmdhash = HashString(params.cmdname); - const Command* cmd = reinterpret_cast<const Command*>(mzHashTableLookup(cmdht, cmdhash, - const_cast<char*>(params.cmdname), CompareCommandNames, - false)); - - if (cmd == nullptr) { - fprintf(stderr, "unexpected command [%s]\n", params.cmdname); - goto pbiudone; - } - - if (cmd->f != nullptr && cmd->f(params) == -1) { - fprintf(stderr, "failed to execute command [%s]\n", line_str.c_str()); - goto pbiudone; - } - - if (params.canwrite) { - if (ota_fsync(params.fd) == -1) { - failure_type = kFsyncFailure; - fprintf(stderr, "fsync failed: %s\n", strerror(errno)); - goto pbiudone; - } - fprintf(cmd_pipe, "set_progress %.4f\n", (double) params.written / total_blocks); - fflush(cmd_pipe); - } - } - - if (params.canwrite) { - pthread_join(params.thread, nullptr); - - fprintf(stderr, "wrote %zu blocks; expected %d\n", params.written, total_blocks); - fprintf(stderr, "stashed %zu blocks\n", params.stashed); - fprintf(stderr, "max alloc needed was %zu\n", params.buffer.size()); - - const char* partition = strrchr(blockdev_filename->data, '/'); - if (partition != nullptr && *(partition+1) != 0) { - fprintf(cmd_pipe, "log bytes_written_%s: %zu\n", partition + 1, - params.written * BLOCKSIZE); - fprintf(cmd_pipe, "log bytes_stashed_%s: %zu\n", partition + 1, - params.stashed * BLOCKSIZE); - fflush(cmd_pipe); - } - // Delete stash only after successfully completing the update, as it - // may contain blocks needed to complete the update later. - DeleteStash(params.stashbase); - } else { - fprintf(stderr, "verified partition contents; update may be resumed\n"); - } - - rc = 0; + rc = 0; pbiudone: - if (ota_fsync(params.fd) == -1) { - failure_type = kFsyncFailure; - fprintf(stderr, "fsync failed: %s\n", strerror(errno)); - } - // params.fd will be automatically closed because of the fd_holder above. - - // Only delete the stash if the update cannot be resumed, or it's - // a verification run and we created the stash. - if (params.isunresumable || (!params.canwrite && params.createdstash)) { - DeleteStash(params.stashbase); - } - - if (failure_type != kNoCause && state->cause_code == kNoCause) { - state->cause_code = failure_type; - } - - return StringValue(rc == 0 ? strdup("t") : strdup("")); + if (ota_fsync(params.fd) == -1) { + failure_type = kFsyncFailure; + PLOG(ERROR) << "fsync failed"; + } + // 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. + if (params.isunresumable || (!params.canwrite && params.createdstash)) { + DeleteStash(params.stashbase); + } + + if (failure_type != kNoCause && state->cause_code == kNoCause) { + state->cause_code = failure_type; + } + + return StringValue(rc == 0 ? "t" : ""); } -// The transfer list is a text file containing commands to -// transfer data from one place to another on the target -// partition. We parse it and execute the commands in order: -// -// zero [rangeset] -// - fill the indicated blocks with zeros -// -// new [rangeset] -// - fill the blocks with data read from the new_data file -// -// erase [rangeset] -// - mark the given blocks as empty -// -// move <...> -// bsdiff <patchstart> <patchlen> <...> -// imgdiff <patchstart> <patchlen> <...> -// - read the source blocks, apply a patch (or not in the -// case of move), write result to target blocks. bsdiff or -// imgdiff specifies the type of patch; move means no patch -// at all. -// -// The format of <...> differs between versions 1 and 2; -// see the LoadSrcTgtVersion{1,2}() functions for a -// description of what's expected. -// -// stash <stash_id> <src_range> -// - (version 2+ only) load the given source range and stash -// the data in the given slot of the stash table. -// -// free <stash_id> -// - (version 3+ only) free the given stash data. -// -// The creator of the transfer list will guarantee that no block -// is read (ie, used as the source for a patch or move) after it -// has been written. -// -// In version 2, the creator will guarantee that a given stash is -// loaded (with a stash command) before it's used in a -// move/bsdiff/imgdiff command. -// -// Within one command the source and target ranges may overlap so -// in general we need to read the entire source into memory before -// writing anything to the target blocks. -// -// All the patch data is concatenated into one patch_data file in -// the update package. It must be stored uncompressed because we -// memory-map it in directly from the archive. (Since patches are -// already compressed, we lose very little by not compressing -// their concatenation.) -// -// In version 3, commands that read data from the partition (i.e. -// move/bsdiff/imgdiff/stash) have one or more additional hashes -// before the range parameters, which are used to check if the -// command has already been completed and verify the integrity of -// the source data. - -Value* BlockImageVerifyFn(const char* name, State* state, int argc, Expr* argv[]) { +/** + * The transfer list is a text file containing commands to transfer data from one place to another + * on the target partition. We parse it and execute the commands in order: + * + * zero [rangeset] + * - Fill the indicated blocks with zeros. + * + * new [rangeset] + * - Fill the blocks with data read from the new_data file. + * + * erase [rangeset] + * - Mark the given blocks as empty. + * + * move <...> + * bsdiff <patchstart> <patchlen> <...> + * imgdiff <patchstart> <patchlen> <...> + * - Read the source blocks, apply a patch (or not in the case of move), write result to target + * blocks. bsdiff or imgdiff specifies the type of patch; move means no patch at all. + * + * See the comments in LoadSrcTgtVersion3() for a description of the <...> format. + * + * stash <stash_id> <src_range> + * - Load the given source range and stash the data in the given slot of the stash table. + * + * free <stash_id> + * - Free the given stash data. + * + * The creator of the transfer list will guarantee that no block is read (ie, used as the source for + * a patch or move) after it has been written. + * + * The creator will guarantee that a given stash is loaded (with a stash command) before it's used + * in a move/bsdiff/imgdiff command. + * + * Within one command the source and target ranges may overlap so in general we need to read the + * entire source into memory before writing anything to the target blocks. + * + * All the patch data is concatenated into one patch_data file in the update package. It must be + * stored uncompressed because we memory-map it in directly from the archive. (Since patches are + * already compressed, we lose very little by not compressing their concatenation.) + * + * Commands that read data from the partition (i.e. move/bsdiff/imgdiff/stash) have one or more + * additional hashes before the range parameters, which are used to check if the command has already + * been completed and verify the integrity of the source data. + */ +Value* BlockImageVerifyFn(const char* name, State* state, + const std::vector<std::unique_ptr<Expr>>& argv) { // Commands which are not tested are set to nullptr to skip them completely const Command commands[] = { { "bsdiff", PerformCommandDiff }, @@ -1698,11 +1700,12 @@ Value* BlockImageVerifyFn(const char* name, State* state, int argc, Expr* argv[] }; // Perform a dry run without writing to test if an update can proceed - return PerformBlockImageUpdate(name, state, argc, argv, commands, + return PerformBlockImageUpdate(name, state, argv, commands, sizeof(commands) / sizeof(commands[0]), true); } -Value* BlockImageUpdateFn(const char* name, State* state, int argc, Expr* argv[]) { +Value* BlockImageUpdateFn(const char* name, State* state, + const std::vector<std::unique_ptr<Expr>>& argv) { const Command commands[] = { { "bsdiff", PerformCommandDiff }, { "erase", PerformCommandErase }, @@ -1714,41 +1717,43 @@ Value* BlockImageUpdateFn(const char* name, State* state, int argc, Expr* argv[] { "zero", PerformCommandZero } }; - return PerformBlockImageUpdate(name, state, argc, argv, commands, + return PerformBlockImageUpdate(name, state, argv, commands, sizeof(commands) / sizeof(commands[0]), false); } -Value* RangeSha1Fn(const char* name, State* state, int /* argc */, Expr* argv[]) { - Value* blockdev_filename; - Value* ranges; +Value* RangeSha1Fn(const char* name, State* state, const std::vector<std::unique_ptr<Expr>>& argv) { + if (argv.size() != 2) { + ErrorAbort(state, kArgsParsingFailure, "range_sha1 expects 2 arguments, got %zu", + argv.size()); + return StringValue(""); + } - if (ReadValueArgs(state, argv, 2, &blockdev_filename, &ranges) < 0) { - return StringValue(strdup("")); + std::vector<std::unique_ptr<Value>> args; + if (!ReadValueArgs(state, argv, &args)) { + return nullptr; } - std::unique_ptr<Value, decltype(&FreeValue)> ranges_holder(ranges, FreeValue); - std::unique_ptr<Value, decltype(&FreeValue)> blockdev_filename_holder(blockdev_filename, - FreeValue); + + const Value* blockdev_filename = args[0].get(); + const Value* ranges = args[1].get(); if (blockdev_filename->type != VAL_STRING) { ErrorAbort(state, kArgsParsingFailure, "blockdev_filename argument to %s must be string", name); - return StringValue(strdup("")); + return StringValue(""); } if (ranges->type != VAL_STRING) { ErrorAbort(state, kArgsParsingFailure, "ranges argument to %s must be string", name); - return StringValue(strdup("")); + return StringValue(""); } - int fd = open(blockdev_filename->data, O_RDWR); - unique_fd fd_holder(fd); - if (fd < 0) { - ErrorAbort(state, kFileOpenFailure, "open \"%s\" failed: %s", blockdev_filename->data, - strerror(errno)); - return StringValue(strdup("")); + android::base::unique_fd fd(ota_open(blockdev_filename->data.c_str(), O_RDWR)); + if (fd == -1) { + ErrorAbort(state, kFileOpenFailure, "open \"%s\" failed: %s", + blockdev_filename->data.c_str(), strerror(errno)); + return StringValue(""); } - RangeSet rs; - parse_range(ranges->data, rs); + RangeSet rs = parse_range(ranges->data); SHA_CTX ctx; SHA1_Init(&ctx); @@ -1756,16 +1761,16 @@ Value* RangeSha1Fn(const char* name, State* state, int /* argc */, Expr* argv[]) std::vector<uint8_t> buffer(BLOCKSIZE); for (size_t i = 0; i < rs.count; ++i) { if (!check_lseek(fd, (off64_t)rs.pos[i*2] * BLOCKSIZE, SEEK_SET)) { - ErrorAbort(state, kLseekFailure, "failed to seek %s: %s", blockdev_filename->data, - strerror(errno)); - return StringValue(strdup("")); + ErrorAbort(state, kLseekFailure, "failed to seek %s: %s", + blockdev_filename->data.c_str(), strerror(errno)); + return StringValue(""); } for (size_t j = rs.pos[i*2]; j < rs.pos[i*2+1]; ++j) { if (read_all(fd, buffer, BLOCKSIZE) == -1) { - ErrorAbort(state, kFreadFailure, "failed to read %s: %s", blockdev_filename->data, - strerror(errno)); - return StringValue(strdup("")); + ErrorAbort(state, kFreadFailure, "failed to read %s: %s", + blockdev_filename->data.c_str(), strerror(errno)); + return StringValue(""); } SHA1_Update(&ctx, buffer.data(), BLOCKSIZE); @@ -1774,7 +1779,7 @@ Value* RangeSha1Fn(const char* name, State* state, int /* argc */, Expr* argv[]) uint8_t digest[SHA_DIGEST_LENGTH]; SHA1_Final(digest, &ctx); - return StringValue(strdup(print_sha1(digest).c_str())); + return StringValue(print_sha1(digest)); } // This function checks if a device has been remounted R/W prior to an incremental @@ -1782,34 +1787,40 @@ Value* RangeSha1Fn(const char* name, State* state, int /* argc */, Expr* argv[]) // 1st block of each partition and check for mounting time/count. It return string "t" // if executes successfully and an empty string otherwise. -Value* CheckFirstBlockFn(const char* name, State* state, int argc, Expr* argv[]) { - Value* arg_filename; +Value* CheckFirstBlockFn(const char* name, State* state, + const std::vector<std::unique_ptr<Expr>>& argv) { + if (argv.size() != 1) { + ErrorAbort(state, kArgsParsingFailure, "check_first_block expects 1 argument, got %zu", + argv.size()); + return StringValue(""); + } - if (ReadValueArgs(state, argv, 1, &arg_filename) < 0) { + std::vector<std::unique_ptr<Value>> args; + if (!ReadValueArgs(state, argv, &args)) { return nullptr; } - std::unique_ptr<Value, decltype(&FreeValue)> filename(arg_filename, FreeValue); - if (filename->type != VAL_STRING) { + const Value* arg_filename = args[0].get(); + + if (arg_filename->type != VAL_STRING) { ErrorAbort(state, kArgsParsingFailure, "filename argument to %s must be string", name); - return StringValue(strdup("")); + return StringValue(""); } - int fd = open(arg_filename->data, O_RDONLY); - unique_fd fd_holder(fd); + android::base::unique_fd fd(ota_open(arg_filename->data.c_str(), O_RDONLY)); if (fd == -1) { - ErrorAbort(state, kFileOpenFailure, "open \"%s\" failed: %s", arg_filename->data, + ErrorAbort(state, kFileOpenFailure, "open \"%s\" failed: %s", arg_filename->data.c_str(), strerror(errno)); - return StringValue(strdup("")); + return StringValue(""); } RangeSet blk0 {1 /*count*/, 1/*size*/, std::vector<size_t> {0, 1}/*position*/}; std::vector<uint8_t> block0_buffer(BLOCKSIZE); if (ReadBlocks(blk0, block0_buffer, fd) == -1) { - ErrorAbort(state, kFreadFailure, "failed to read %s: %s", arg_filename->data, + ErrorAbort(state, kFreadFailure, "failed to read %s: %s", arg_filename->data.c_str(), strerror(errno)); - return StringValue(strdup("")); + return StringValue(""); } // https://ext4.wiki.kernel.org/index.php/Ext4_Disk_Layout @@ -1827,56 +1838,60 @@ Value* CheckFirstBlockFn(const char* name, State* state, int argc, Expr* argv[]) uiPrintf(state, "Last remount happened on %s", ctime(&mount_time)); } - return StringValue(strdup("t")); + return StringValue("t"); } -Value* BlockImageRecoverFn(const char* name, State* state, int argc, Expr* argv[]) { - Value* arg_filename; - Value* arg_ranges; +Value* BlockImageRecoverFn(const char* name, State* state, + const std::vector<std::unique_ptr<Expr>>& argv) { + if (argv.size() != 2) { + ErrorAbort(state, kArgsParsingFailure, "block_image_recover expects 2 arguments, got %zu", + argv.size()); + return StringValue(""); + } - if (ReadValueArgs(state, argv, 2, &arg_filename, &arg_ranges) < 0) { - return NULL; + std::vector<std::unique_ptr<Value>> args; + if (!ReadValueArgs(state, argv, &args)) { + return nullptr; } - std::unique_ptr<Value, decltype(&FreeValue)> filename(arg_filename, FreeValue); - std::unique_ptr<Value, decltype(&FreeValue)> ranges(arg_ranges, FreeValue); + const Value* filename = args[0].get(); + const Value* ranges = args[1].get(); if (filename->type != VAL_STRING) { ErrorAbort(state, kArgsParsingFailure, "filename argument to %s must be string", name); - return StringValue(strdup("")); + return StringValue(""); } if (ranges->type != VAL_STRING) { ErrorAbort(state, kArgsParsingFailure, "ranges argument to %s must be string", name); - return StringValue(strdup("")); + return StringValue(""); } // Output notice to log when recover is attempted - fprintf(stderr, "%s image corrupted, attempting to recover...\n", filename->data); + LOG(INFO) << filename->data << " image corrupted, attempting to recover..."; // When opened with O_RDWR, libfec rewrites corrupted blocks when they are read - fec::io fh(filename->data, O_RDWR); + fec::io fh(filename->data.c_str(), O_RDWR); if (!fh) { - ErrorAbort(state, kLibfecFailure, "fec_open \"%s\" failed: %s", filename->data, + ErrorAbort(state, kLibfecFailure, "fec_open \"%s\" failed: %s", filename->data.c_str(), strerror(errno)); - return StringValue(strdup("")); + return StringValue(""); } if (!fh.has_ecc() || !fh.has_verity()) { ErrorAbort(state, kLibfecFailure, "unable to use metadata to correct errors"); - return StringValue(strdup("")); + return StringValue(""); } fec_status status; if (!fh.get_status(status)) { ErrorAbort(state, kLibfecFailure, "failed to read FEC status"); - return StringValue(strdup("")); + return StringValue(""); } - RangeSet rs; - parse_range(ranges->data, rs); + RangeSet rs = parse_range(ranges->data); uint8_t buffer[BLOCKSIZE]; @@ -1889,8 +1904,8 @@ Value* BlockImageRecoverFn(const char* name, State* state, int argc, Expr* argv[ if (fh.pread(buffer, BLOCKSIZE, (off64_t)j * BLOCKSIZE) != BLOCKSIZE) { ErrorAbort(state, kLibfecFailure, "failed to recover %s (block %zu): %s", - filename->data, j, strerror(errno)); - return StringValue(strdup("")); + filename->data.c_str(), j, strerror(errno)); + return StringValue(""); } // If we want to be able to recover from a situation where rewriting a corrected @@ -1905,8 +1920,8 @@ Value* BlockImageRecoverFn(const char* name, State* state, int argc, Expr* argv[ // read and check if the errors field value has increased. } } - fprintf(stderr, "...%s image recovered successfully.\n", filename->data); - return StringValue(strdup("t")); + LOG(INFO) << "..." << filename->data << " image recovered successfully."; + return StringValue("t"); } void RegisterBlockImageFunctions() { |