updater: Manage buffers with std::vector.
Change-Id: Ide489e18dd8daf161b612f65b28921b61cdd8d8d
This commit is contained in:
Tao Bao
parent
e520f1d4cd
commit
612336ddc1
1 changed files with 168 additions and 228 deletions
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@ -162,6 +162,10 @@ static int read_all(int fd, uint8_t* data, size_t size) {
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return 0;
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}
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static int read_all(int fd, std::vector<uint8_t>& buffer, size_t size) {
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return read_all(fd, buffer.data(), size);
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}
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static int write_all(int fd, const uint8_t* data, size_t size) {
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size_t written = 0;
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while (written < size) {
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@ -176,6 +180,10 @@ static int write_all(int fd, const uint8_t* data, size_t size) {
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return 0;
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}
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static int write_all(int fd, const std::vector<uint8_t>& buffer, size_t size) {
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return write_all(fd, buffer.data(), size);
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}
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static bool check_lseek(int fd, off64_t offset, int whence) {
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off64_t rc = TEMP_FAILURE_RETRY(lseek64(fd, offset, whence));
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if (rc == -1) {
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@ -185,18 +193,11 @@ static bool check_lseek(int fd, off64_t offset, int whence) {
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return true;
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}
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static void allocate(size_t size, uint8_t** buffer, size_t* buffer_alloc) {
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static void allocate(size_t size, std::vector<uint8_t>& buffer) {
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// if the buffer's big enough, reuse it.
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if (size <= *buffer_alloc) return;
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if (size <= buffer.size()) return;
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free(*buffer);
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*buffer = (uint8_t*) malloc(size);
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if (*buffer == nullptr) {
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fprintf(stderr, "failed to allocate %zu bytes\n", size);
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exit(1);
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}
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*buffer_alloc = size;
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buffer.resize(size);
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}
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struct RangeSinkState {
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@ -324,12 +325,9 @@ static void* unzip_new_data(void* cookie) {
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return nullptr;
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}
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static int ReadBlocks(const RangeSet& src, uint8_t* buffer, int fd) {
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static int ReadBlocks(const RangeSet& src, std::vector<uint8_t>& buffer, int fd) {
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size_t p = 0;
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if (!buffer) {
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return -1;
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}
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uint8_t* data = buffer.data();
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for (size_t i = 0; i < src.count; ++i) {
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if (!check_lseek(fd, (off64_t) src.pos[i * 2] * BLOCKSIZE, SEEK_SET)) {
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@ -338,7 +336,7 @@ static int ReadBlocks(const RangeSet& src, uint8_t* buffer, int fd) {
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size_t size = (src.pos[i * 2 + 1] - src.pos[i * 2]) * BLOCKSIZE;
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if (read_all(fd, buffer + p, size) == -1) {
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if (read_all(fd, data + p, size) == -1) {
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return -1;
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}
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@ -348,10 +346,8 @@ static int ReadBlocks(const RangeSet& src, uint8_t* buffer, int fd) {
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return 0;
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}
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static int WriteBlocks(const RangeSet& tgt, uint8_t* buffer, int fd) {
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if (!buffer) {
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return -1;
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}
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static int WriteBlocks(const RangeSet& tgt, const std::vector<uint8_t>& buffer, int fd) {
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const uint8_t* data = buffer.data();
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size_t p = 0;
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for (size_t i = 0; i < tgt.count; ++i) {
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@ -361,7 +357,7 @@ static int WriteBlocks(const RangeSet& tgt, uint8_t* buffer, int fd) {
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size_t size = (tgt.pos[i * 2 + 1] - tgt.pos[i * 2]) * BLOCKSIZE;
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if (write_all(fd, buffer + p, size) == -1) {
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if (write_all(fd, data + p, size) == -1) {
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return -1;
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}
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@ -381,30 +377,29 @@ static int WriteBlocks(const RangeSet& tgt, uint8_t* buffer, int fd) {
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// it to make it larger if necessary.
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static int LoadSrcTgtVersion1(char** wordsave, RangeSet& tgt, size_t& src_blocks,
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uint8_t** buffer, size_t* buffer_alloc, int fd) {
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std::vector<uint8_t>& buffer, int fd) {
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// <src_range>
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char* word = strtok_r(nullptr, " ", wordsave);
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RangeSet src;
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parse_range(word, src);
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// <tgt_range>
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word = strtok_r(nullptr, " ", wordsave);
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parse_range(word, tgt);
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allocate(src.size * BLOCKSIZE, buffer, buffer_alloc);
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int rc = ReadBlocks(src, *buffer, fd);
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allocate(src.size * BLOCKSIZE, buffer);
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int rc = ReadBlocks(src, buffer, fd);
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src_blocks = src.size;
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return rc;
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}
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static int VerifyBlocks(const std::string& expected, const uint8_t* buffer,
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static int VerifyBlocks(const std::string& expected, const std::vector<uint8_t>& buffer,
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const size_t blocks, bool printerror) {
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uint8_t digest[SHA_DIGEST_SIZE];
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const uint8_t* data = buffer.data();
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if (!buffer) {
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return -1;
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}
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SHA_hash(buffer, blocks * BLOCKSIZE, digest);
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SHA_hash(data, blocks * BLOCKSIZE, digest);
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std::string hexdigest = print_sha1(digest);
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@ -516,8 +511,8 @@ static void DeleteStash(const std::string& base) {
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}
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static int LoadStash(const std::string& base, const std::string& id, bool verify, size_t* blocks,
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uint8_t** buffer, size_t* buffer_alloc, bool printnoent) {
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if (base.empty() || !buffer || !buffer_alloc) {
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std::vector<uint8_t>& buffer, bool printnoent) {
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if (base.empty()) {
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return -1;
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}
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@ -555,15 +550,15 @@ static int LoadStash(const std::string& base, const std::string& id, bool verify
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return -1;
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}
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allocate(sb.st_size, buffer, buffer_alloc);
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allocate(sb.st_size, buffer);
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if (read_all(fd, *buffer, sb.st_size) == -1) {
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if (read_all(fd, buffer, sb.st_size) == -1) {
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return -1;
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}
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*blocks = sb.st_size / BLOCKSIZE;
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if (verify && VerifyBlocks(id, *buffer, *blocks, true) != 0) {
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if (verify && VerifyBlocks(id, buffer, *blocks, true) != 0) {
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fprintf(stderr, "unexpected contents in %s\n", fn.c_str());
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DeleteFile(fn, nullptr);
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return -1;
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@ -572,9 +567,9 @@ static int LoadStash(const std::string& base, const std::string& id, bool verify
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return 0;
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}
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static int WriteStash(const std::string& base, const std::string& id, int blocks, uint8_t* buffer,
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bool checkspace, bool *exists) {
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if (base.empty() || buffer == nullptr) {
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static int WriteStash(const std::string& base, const std::string& id, int blocks,
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std::vector<uint8_t>& buffer, bool checkspace, bool *exists) {
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if (base.empty()) {
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return -1;
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}
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@ -706,9 +701,9 @@ static int CreateStash(State* state, int maxblocks, const char* blockdev, std::s
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return 0; // Using existing directory
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}
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static int SaveStash(const std::string& base, char** wordsave, uint8_t** buffer,
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size_t* buffer_alloc, int fd, bool usehash) {
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if (!wordsave || !buffer || !buffer_alloc) {
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static int SaveStash(const std::string& base, char** wordsave, std::vector<uint8_t>& buffer,
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int fd, bool usehash) {
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if (!wordsave) {
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return -1;
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}
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@ -720,7 +715,7 @@ static int SaveStash(const std::string& base, char** wordsave, uint8_t** buffer,
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std::string id(id_tok);
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size_t blocks = 0;
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if (usehash && LoadStash(base, id, true, &blocks, buffer, buffer_alloc, false) == 0) {
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if (usehash && LoadStash(base, id, true, &blocks, buffer, false) == 0) {
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// Stash file already exists and has expected contents. Do not
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// read from source again, as the source may have been already
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// overwritten during a previous attempt.
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@ -731,13 +726,13 @@ static int SaveStash(const std::string& base, char** wordsave, uint8_t** buffer,
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RangeSet src;
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parse_range(word, src);
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allocate(src.size * BLOCKSIZE, buffer, buffer_alloc);
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if (ReadBlocks(src, *buffer, fd) == -1) {
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allocate(src.size * BLOCKSIZE, buffer);
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if (ReadBlocks(src, buffer, fd) == -1) {
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return -1;
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}
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blocks = src.size;
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if (usehash && VerifyBlocks(id, *buffer, blocks, true) != 0) {
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if (usehash && VerifyBlocks(id, buffer, blocks, true) != 0) {
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// Source blocks have unexpected contents. If we actually need this
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// data later, this is an unrecoverable error. However, the command
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// that uses the data may have already completed previously, so the
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@ -747,7 +742,7 @@ static int SaveStash(const std::string& base, char** wordsave, uint8_t** buffer,
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}
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fprintf(stderr, "stashing %zu blocks to %s\n", blocks, id.c_str());
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return WriteStash(base, id, blocks, *buffer, false, nullptr);
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return WriteStash(base, id, blocks, buffer, false, nullptr);
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}
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static int FreeStash(const std::string& base, const char* id) {
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@ -762,16 +757,19 @@ static int FreeStash(const std::string& base, const char* id) {
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return 0;
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}
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static void MoveRange(uint8_t* dest, const RangeSet& locs, const uint8_t* source) {
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static void MoveRange(std::vector<uint8_t>& dest, const RangeSet& locs,
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const std::vector<uint8_t>& source) {
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// source contains packed data, which we want to move to the
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// locations given in *locs in the dest buffer. source and dest
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// locations given in locs in the dest buffer. source and dest
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// may be the same buffer.
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const uint8_t* from = source.data();
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uint8_t* to = dest.data();
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size_t start = locs.size;
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for (int i = locs.count-1; i >= 0; --i) {
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size_t blocks = locs.pos[i*2+1] - locs.pos[i*2];
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start -= blocks;
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memmove(dest + (locs.pos[i*2] * BLOCKSIZE), source + (start * BLOCKSIZE),
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memmove(to + (locs.pos[i*2] * BLOCKSIZE), from + (start * BLOCKSIZE),
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blocks * BLOCKSIZE);
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}
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}
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@ -794,30 +792,26 @@ static void MoveRange(uint8_t* dest, const RangeSet& locs, const uint8_t* source
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// reallocated if needed to accommodate the source data. *tgt is the
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// target RangeSet. Any stashes required are loaded using LoadStash.
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static int LoadSrcTgtVersion2(char** wordsave, RangeSet& tgt, size_t& src_blocks, uint8_t** buffer,
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size_t* buffer_alloc, int fd, const std::string& stashbase, bool* overlap) {
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char* word;
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char* colonsave;
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char* colon;
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RangeSet locs;
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size_t stashalloc = 0;
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uint8_t* stash = nullptr;
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word = strtok_r(nullptr, " ", wordsave);
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static int LoadSrcTgtVersion2(char** wordsave, RangeSet& tgt, size_t& src_blocks,
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std::vector<uint8_t>& buffer, int fd, const std::string& stashbase, bool* overlap) {
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// <tgt_range>
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char* word = strtok_r(nullptr, " ", wordsave);
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parse_range(word, tgt);
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// <src_block_count>
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word = strtok_r(nullptr, " ", wordsave);
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src_blocks = strtol(word, nullptr, 0);
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allocate(src_blocks * BLOCKSIZE, buffer, buffer_alloc);
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allocate(src_blocks * BLOCKSIZE, buffer);
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// "-" or <src_range> [<src_loc>]
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word = strtok_r(nullptr, " ", wordsave);
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if (word[0] == '-' && word[1] == '\0') {
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// no source ranges, only stashes
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} else {
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RangeSet src;
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parse_range(word, src);
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int res = ReadBlocks(src, *buffer, fd);
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int res = ReadBlocks(src, buffer, fd);
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if (overlap) {
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*overlap = range_overlaps(src, tgt);
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@ -833,18 +827,22 @@ static int LoadSrcTgtVersion2(char** wordsave, RangeSet& tgt, size_t& src_blocks
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return 0;
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}
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RangeSet locs;
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parse_range(word, locs);
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MoveRange(*buffer, locs, *buffer);
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MoveRange(buffer, locs, buffer);
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}
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// <[stash_id:stash-range]>
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char* colonsave;
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while ((word = strtok_r(nullptr, " ", wordsave)) != nullptr) {
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// Each word is a an index into the stash table, a colon, and
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// then a rangeset describing where in the source block that
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// stashed data should go.
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colonsave = nullptr;
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colon = strtok_r(word, ":", &colonsave);
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char* colon = strtok_r(word, ":", &colonsave);
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int res = LoadStash(stashbase, std::string(colon), false, nullptr, &stash, &stashalloc, true);
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std::vector<uint8_t> stash;
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int res = LoadStash(stashbase, std::string(colon), false, nullptr, stash, true);
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if (res == -1) {
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// These source blocks will fail verification if used later, but we
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@ -854,13 +852,10 @@ static int LoadSrcTgtVersion2(char** wordsave, RangeSet& tgt, size_t& src_blocks
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}
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colon = strtok_r(nullptr, ":", &colonsave);
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RangeSet locs;
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parse_range(colon, locs);
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MoveRange(*buffer, locs, stash);
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}
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if (stash) {
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free(stash);
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MoveRange(buffer, locs, stash);
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}
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return 0;
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@ -881,8 +876,7 @@ struct CommandParameters {
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size_t written;
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NewThreadInfo nti;
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pthread_t thread;
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size_t bufsize;
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uint8_t* buffer;
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std::vector<uint8_t> buffer;
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uint8_t* patch_start;
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};
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@ -924,20 +918,19 @@ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t&
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}
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}
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if (LoadSrcTgtVersion2(¶ms.cpos, tgt, src_blocks, ¶ms.buffer, ¶ms.bufsize,
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params.fd, params.stashbase, &overlap) == -1) {
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if (LoadSrcTgtVersion2(¶ms.cpos, tgt, src_blocks, params.buffer, params.fd,
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params.stashbase, &overlap) == -1) {
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return -1;
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}
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std::vector<uint8_t> tgtbuffer(tgt.size * BLOCKSIZE);
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if (ReadBlocks(tgt, tgtbuffer.data(), params.fd) == -1) {
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if (ReadBlocks(tgt, tgtbuffer, params.fd) == -1) {
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return -1;
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}
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if (VerifyBlocks(tgthash, tgtbuffer.data(), tgt.size, false) == 0) {
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if (VerifyBlocks(tgthash, tgtbuffer, tgt.size, false) == 0) {
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// Target blocks already have expected content, command should be skipped
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fprintf(stderr, "verified, to return 1");
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return 1;
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}
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@ -948,7 +941,7 @@ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t&
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fprintf(stderr, "stashing %zu overlapping blocks to %s\n", src_blocks, srchash);
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bool stash_exists = false;
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if (WriteStash(params.stashbase, std::string(srchash), src_blocks, params.buffer, true,
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if (WriteStash(params.stashbase, srchash, src_blocks, params.buffer, true,
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&stash_exists) != 0) {
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fprintf(stderr, "failed to stash overlapping source blocks\n");
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return -1;
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@ -964,8 +957,7 @@ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t&
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return 0;
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}
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if (overlap && LoadStash(params.stashbase, std::string(srchash), true, nullptr, ¶ms.buffer,
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¶ms.bufsize, true) == 0) {
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if (overlap && LoadStash(params.stashbase, srchash, true, nullptr, params.buffer, true) == 0) {
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// Overlapping source blocks were previously stashed, command can proceed.
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// We are recovering from an interrupted command, so we don't know if the
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// stash can safely be deleted after this command.
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@ -986,11 +978,10 @@ static int PerformCommandMove(CommandParameters& params) {
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RangeSet tgt;
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if (params.version == 1) {
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status = LoadSrcTgtVersion1(¶ms.cpos, tgt, blocks, ¶ms.buffer,
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¶ms.bufsize, params.fd);
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status = LoadSrcTgtVersion1(¶ms.cpos, tgt, blocks, params.buffer, params.fd);
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} else if (params.version == 2) {
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status = LoadSrcTgtVersion2(¶ms.cpos, tgt, blocks, ¶ms.buffer,
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¶ms.bufsize, params.fd, params.stashbase, nullptr);
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status = LoadSrcTgtVersion2(¶ms.cpos, tgt, blocks, params.buffer, params.fd,
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params.stashbase, nullptr);
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} else if (params.version >= 3) {
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status = LoadSrcTgtVersion3(params, tgt, blocks, true, overlap);
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}
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@ -1030,8 +1021,8 @@ static int PerformCommandMove(CommandParameters& params) {
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}
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static int PerformCommandStash(CommandParameters& params) {
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return SaveStash(params.stashbase, ¶ms.cpos, ¶ms.buffer, ¶ms.bufsize,
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params.fd, (params.version >= 3));
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return SaveStash(params.stashbase, ¶ms.cpos, params.buffer, params.fd,
|
||||
(params.version >= 3));
|
||||
}
|
||||
|
||||
static int PerformCommandFree(CommandParameters& params) {
|
||||
|
|
@ -1055,8 +1046,8 @@ static int PerformCommandZero(CommandParameters& params) {
|
|||
|
||||
fprintf(stderr, " zeroing %zu blocks\n", tgt.size);
|
||||
|
||||
allocate(BLOCKSIZE, ¶ms.buffer, ¶ms.bufsize);
|
||||
memset(params.buffer, 0, BLOCKSIZE);
|
||||
allocate(BLOCKSIZE, params.buffer);
|
||||
memset(params.buffer.data(), 0, BLOCKSIZE);
|
||||
|
||||
if (params.canwrite) {
|
||||
for (size_t i = 0; i < tgt.count; ++i) {
|
||||
|
|
@ -1120,12 +1111,9 @@ static int PerformCommandNew(CommandParameters& params) {
|
|||
}
|
||||
|
||||
static int PerformCommandDiff(CommandParameters& params) {
|
||||
char* value = nullptr;
|
||||
bool overlap = false;
|
||||
RangeSet tgt;
|
||||
|
||||
const std::string logparams(params.cpos);
|
||||
value = strtok_r(nullptr, " ", ¶ms.cpos);
|
||||
char* value = strtok_r(nullptr, " ", ¶ms.cpos);
|
||||
|
||||
if (value == nullptr) {
|
||||
fprintf(stderr, "missing patch offset for %s\n", params.cmdname);
|
||||
|
|
@ -1143,14 +1131,15 @@ static int PerformCommandDiff(CommandParameters& params) {
|
|||
|
||||
size_t len = strtoul(value, nullptr, 0);
|
||||
|
||||
RangeSet tgt;
|
||||
size_t blocks = 0;
|
||||
bool overlap = false;
|
||||
int status = 0;
|
||||
if (params.version == 1) {
|
||||
status = LoadSrcTgtVersion1(¶ms.cpos, tgt, blocks, ¶ms.buffer,
|
||||
¶ms.bufsize, params.fd);
|
||||
status = LoadSrcTgtVersion1(¶ms.cpos, tgt, blocks, params.buffer, params.fd);
|
||||
} else if (params.version == 2) {
|
||||
status = LoadSrcTgtVersion2(¶ms.cpos, tgt, blocks, ¶ms.buffer,
|
||||
¶ms.bufsize, params.fd, params.stashbase, nullptr);
|
||||
status = LoadSrcTgtVersion2(¶ms.cpos, tgt, blocks, params.buffer, params.fd,
|
||||
params.stashbase, nullptr);
|
||||
} else if (params.version >= 3) {
|
||||
status = LoadSrcTgtVersion3(params, tgt, blocks, false, overlap);
|
||||
}
|
||||
|
|
@ -1185,11 +1174,11 @@ static int PerformCommandDiff(CommandParameters& params) {
|
|||
}
|
||||
|
||||
if (params.cmdname[0] == 'i') { // imgdiff
|
||||
ApplyImagePatch(params.buffer, blocks * BLOCKSIZE, &patch_value,
|
||||
ApplyImagePatch(params.buffer.data(), blocks * BLOCKSIZE, &patch_value,
|
||||
&RangeSinkWrite, &rss, nullptr, nullptr);
|
||||
} else {
|
||||
ApplyBSDiffPatch(params.buffer, blocks * BLOCKSIZE, &patch_value,
|
||||
0, &RangeSinkWrite, &rss, nullptr);
|
||||
ApplyBSDiffPatch(params.buffer.data(), blocks * BLOCKSIZE, &patch_value, 0,
|
||||
&RangeSinkWrite, &rss, nullptr);
|
||||
}
|
||||
|
||||
// We expect the output of the patcher to fill the tgt ranges exactly.
|
||||
|
|
@ -1261,10 +1250,10 @@ static int PerformCommandErase(CommandParameters& params) {
|
|||
// Definitions for transfer list command functions
|
||||
typedef int (*CommandFunction)(CommandParameters&);
|
||||
|
||||
typedef struct {
|
||||
struct Command {
|
||||
const char* name;
|
||||
CommandFunction f;
|
||||
} Command;
|
||||
};
|
||||
|
||||
// CompareCommands and CompareCommandNames are for the hash table
|
||||
|
||||
|
|
@ -1297,86 +1286,76 @@ static unsigned int HashString(const char *s) {
|
|||
static Value* PerformBlockImageUpdate(const char* name, State* state, int /* argc */, Expr* argv[],
|
||||
const Command* commands, size_t cmdcount, bool dryrun) {
|
||||
|
||||
char* line = nullptr;
|
||||
char* linesave = nullptr;
|
||||
char* transfer_list = nullptr;
|
||||
CommandParameters params;
|
||||
const Command* cmd = nullptr;
|
||||
const ZipEntry* new_entry = nullptr;
|
||||
const ZipEntry* patch_entry = nullptr;
|
||||
FILE* cmd_pipe = nullptr;
|
||||
HashTable* cmdht = nullptr;
|
||||
int res;
|
||||
int rc = -1;
|
||||
int total_blocks = 0;
|
||||
pthread_attr_t attr;
|
||||
UpdaterInfo* ui = nullptr;
|
||||
Value* blockdev_filename = nullptr;
|
||||
Value* new_data_fn = nullptr;
|
||||
Value* patch_data_fn = nullptr;
|
||||
Value* transfer_list_value = nullptr;
|
||||
ZipArchive* za = nullptr;
|
||||
|
||||
memset(¶ms, 0, sizeof(params));
|
||||
params.canwrite = !dryrun;
|
||||
|
||||
fprintf(stderr, "performing %s\n", dryrun ? "verification" : "update");
|
||||
|
||||
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) {
|
||||
goto pbiudone;
|
||||
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, "blockdev_filename argument to %s must be string", name);
|
||||
goto pbiudone;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
if (transfer_list_value->type != VAL_BLOB) {
|
||||
ErrorAbort(state, "transfer_list argument to %s must be blob", name);
|
||||
goto pbiudone;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
if (new_data_fn->type != VAL_STRING) {
|
||||
ErrorAbort(state, "new_data_fn argument to %s must be string", name);
|
||||
goto pbiudone;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
if (patch_data_fn->type != VAL_STRING) {
|
||||
ErrorAbort(state, "patch_data_fn argument to %s must be string", name);
|
||||
goto pbiudone;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
|
||||
ui = (UpdaterInfo*) state->cookie;
|
||||
UpdaterInfo* ui = reinterpret_cast<UpdaterInfo*>(state->cookie);
|
||||
|
||||
if (ui == nullptr) {
|
||||
goto pbiudone;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
|
||||
cmd_pipe = ui->cmd_pipe;
|
||||
za = ui->package_zip;
|
||||
FILE* cmd_pipe = ui->cmd_pipe;
|
||||
ZipArchive* za = ui->package_zip;
|
||||
|
||||
if (cmd_pipe == nullptr || za == nullptr) {
|
||||
goto pbiudone;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
|
||||
patch_entry = mzFindZipEntry(za, patch_data_fn->data);
|
||||
|
||||
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);
|
||||
goto pbiudone;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
|
||||
params.patch_start = ui->package_zip_addr + mzGetZipEntryOffset(patch_entry);
|
||||
new_entry = mzFindZipEntry(za, new_data_fn->data);
|
||||
|
||||
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);
|
||||
goto pbiudone;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
|
||||
params.fd = TEMP_FAILURE_RETRY(open(blockdev_filename->data, O_RDWR));
|
||||
unique_fd fd_holder(params.fd);
|
||||
|
||||
if (params.fd == -1) {
|
||||
fprintf(stderr, "open \"%s\" failed: %s\n", blockdev_filename->data, strerror(errno));
|
||||
goto pbiudone;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
|
||||
if (params.canwrite) {
|
||||
|
|
@ -1385,90 +1364,86 @@ static Value* PerformBlockImageUpdate(const char* name, State* state, int /* arg
|
|||
|
||||
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));
|
||||
goto pbiudone;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
}
|
||||
|
||||
// The data in transfer_list_value is not necessarily null-terminated, so we need
|
||||
// to copy it to a new buffer and add the null that strtok_r will need.
|
||||
transfer_list = reinterpret_cast<char*>(malloc(transfer_list_value->size + 1));
|
||||
|
||||
if (transfer_list == nullptr) {
|
||||
fprintf(stderr, "failed to allocate %zd bytes for transfer list\n",
|
||||
transfer_list_value->size + 1);
|
||||
goto pbiudone;
|
||||
}
|
||||
|
||||
memcpy(transfer_list, transfer_list_value->data, transfer_list_value->size);
|
||||
transfer_list[transfer_list_value->size] = '\0';
|
||||
const std::string transfer_list(transfer_list_value->data, transfer_list_value->size);
|
||||
std::vector<std::string> lines = android::base::Split(transfer_list, "\n");
|
||||
|
||||
// First line in transfer list is the version number
|
||||
line = strtok_r(transfer_list, "\n", &linesave);
|
||||
params.version = strtol(line, nullptr, 0);
|
||||
|
||||
if (params.version < 1 || params.version > 3) {
|
||||
fprintf(stderr, "unexpected transfer list version [%s]\n", line);
|
||||
goto pbiudone;
|
||||
long int val;
|
||||
errno = 0;
|
||||
val = strtol(lines[0].c_str(), nullptr, 0);
|
||||
if (errno != 0 || val < 1 || val > 3) {
|
||||
fprintf(stderr, "unexpected transfer list version [%s]\n", lines[0].c_str());
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
params.version = static_cast<int>(val);
|
||||
|
||||
fprintf(stderr, "blockimg version is %d\n", params.version);
|
||||
|
||||
// Second line in transfer list is the total number of blocks we expect to write
|
||||
line = strtok_r(nullptr, "\n", &linesave);
|
||||
total_blocks = strtol(line, nullptr, 0);
|
||||
int total_blocks = strtol(lines[1].c_str(), nullptr, 0);
|
||||
|
||||
if (total_blocks < 0) {
|
||||
ErrorAbort(state, "unexpected block count [%s]\n", line);
|
||||
goto pbiudone;
|
||||
ErrorAbort(state, "unexpected block count [%s]\n", lines[1].c_str());
|
||||
return StringValue(strdup(""));
|
||||
} else if (total_blocks == 0) {
|
||||
rc = 0;
|
||||
goto pbiudone;
|
||||
return StringValue(strdup("t"));
|
||||
}
|
||||
|
||||
size_t start = 2;
|
||||
if (params.version >= 2) {
|
||||
// Third line is how many stash entries are needed simultaneously
|
||||
line = strtok_r(nullptr, "\n", &linesave);
|
||||
fprintf(stderr, "maximum stash entries %s\n", line);
|
||||
fprintf(stderr, "maximum stash entries %s\n", lines[2].c_str());
|
||||
|
||||
// Fourth line is the maximum number of blocks that will be stashed simultaneously
|
||||
line = strtok_r(nullptr, "\n", &linesave);
|
||||
int stash_max_blocks = strtol(line, nullptr, 0);
|
||||
int stash_max_blocks = strtol(lines[3].c_str(), nullptr, 0);
|
||||
|
||||
if (stash_max_blocks < 0) {
|
||||
ErrorAbort(state, "unexpected maximum stash blocks [%s]\n", line);
|
||||
goto pbiudone;
|
||||
ErrorAbort(state, "unexpected maximum stash blocks [%s]\n", lines[3].c_str());
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
|
||||
if (stash_max_blocks >= 0) {
|
||||
res = CreateStash(state, stash_max_blocks, blockdev_filename->data, params.stashbase);
|
||||
int res = CreateStash(state, stash_max_blocks, blockdev_filename->data,
|
||||
params.stashbase);
|
||||
|
||||
if (res == -1) {
|
||||
goto pbiudone;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
|
||||
params.createdstash = res;
|
||||
}
|
||||
|
||||
start += 2;
|
||||
}
|
||||
|
||||
// Build a hash table of the available commands
|
||||
cmdht = mzHashTableCreate(cmdcount, nullptr);
|
||||
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);
|
||||
}
|
||||
|
||||
// Subsequent lines are all individual transfer commands
|
||||
for (line = strtok_r(nullptr, "\n", &linesave); line;
|
||||
line = strtok_r(nullptr, "\n", &linesave)) {
|
||||
int rc = -1;
|
||||
|
||||
const std::string logcmd(line);
|
||||
// Subsequent lines are all individual transfer commands
|
||||
for (auto it = lines.cbegin() + start; it != lines.cend(); it++) {
|
||||
const std::string& line_str(*it);
|
||||
char* line = strdup(line_str.c_str());
|
||||
params.cmdname = strtok_r(line, " ", ¶ms.cpos);
|
||||
|
||||
if (params.cmdname == nullptr) {
|
||||
|
|
@ -1477,8 +1452,8 @@ static Value* PerformBlockImageUpdate(const char* name, State* state, int /* arg
|
|||
}
|
||||
|
||||
unsigned int cmdhash = HashString(params.cmdname);
|
||||
cmd = (const Command*) mzHashTableLookup(cmdht, cmdhash, params.cmdname,
|
||||
CompareCommandNames, false);
|
||||
const Command* cmd = reinterpret_cast<const Command*>(mzHashTableLookup(cmdht, cmdhash,
|
||||
params.cmdname, CompareCommandNames, false));
|
||||
|
||||
if (cmd == nullptr) {
|
||||
fprintf(stderr, "unexpected command [%s]\n", params.cmdname);
|
||||
|
|
@ -1486,7 +1461,7 @@ static Value* PerformBlockImageUpdate(const char* name, State* state, int /* arg
|
|||
}
|
||||
|
||||
if (cmd->f != nullptr && cmd->f(params) == -1) {
|
||||
fprintf(stderr, "failed to execute command [%s]\n", logcmd.c_str());
|
||||
fprintf(stderr, "failed to execute command [%s]\n", line_str.c_str());
|
||||
goto pbiudone;
|
||||
}
|
||||
|
||||
|
|
@ -1504,7 +1479,7 @@ static Value* PerformBlockImageUpdate(const char* name, State* state, int /* arg
|
|||
pthread_join(params.thread, nullptr);
|
||||
|
||||
fprintf(stderr, "wrote %zu blocks; expected %d\n", params.written, total_blocks);
|
||||
fprintf(stderr, "max alloc needed was %zu\n", params.bufsize);
|
||||
fprintf(stderr, "max alloc needed was %zu\n", params.buffer.size());
|
||||
|
||||
// Delete stash only after successfully completing the update, as it
|
||||
// may contain blocks needed to complete the update later.
|
||||
|
|
@ -1523,34 +1498,6 @@ pbiudone:
|
|||
close(params.fd);
|
||||
}
|
||||
|
||||
if (cmdht) {
|
||||
mzHashTableFree(cmdht);
|
||||
}
|
||||
|
||||
if (params.buffer) {
|
||||
free(params.buffer);
|
||||
}
|
||||
|
||||
if (transfer_list) {
|
||||
free(transfer_list);
|
||||
}
|
||||
|
||||
if (blockdev_filename) {
|
||||
FreeValue(blockdev_filename);
|
||||
}
|
||||
|
||||
if (transfer_list_value) {
|
||||
FreeValue(transfer_list_value);
|
||||
}
|
||||
|
||||
if (new_data_fn) {
|
||||
FreeValue(new_data_fn);
|
||||
}
|
||||
|
||||
if (patch_data_fn) {
|
||||
FreeValue(patch_data_fn);
|
||||
}
|
||||
|
||||
// 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)) {
|
||||
|
|
@ -1650,63 +1597,56 @@ Value* BlockImageUpdateFn(const char* name, State* state, int argc, Expr* argv[]
|
|||
Value* RangeSha1Fn(const char* name, State* state, int /* argc */, Expr* argv[]) {
|
||||
Value* blockdev_filename;
|
||||
Value* ranges;
|
||||
const uint8_t* digest = nullptr;
|
||||
RangeSet rs;
|
||||
|
||||
if (ReadValueArgs(state, argv, 2, &blockdev_filename, &ranges) < 0) {
|
||||
return nullptr;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
std::unique_ptr<Value, decltype(&FreeValue)> ranges_holder(ranges, FreeValue);
|
||||
std::unique_ptr<Value, decltype(&FreeValue)> blockdev_filename_holder(blockdev_filename,
|
||||
FreeValue);
|
||||
|
||||
if (blockdev_filename->type != VAL_STRING) {
|
||||
ErrorAbort(state, "blockdev_filename argument to %s must be string", name);
|
||||
goto done;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
if (ranges->type != VAL_STRING) {
|
||||
ErrorAbort(state, "ranges argument to %s must be string", name);
|
||||
goto done;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
|
||||
int fd;
|
||||
fd = open(blockdev_filename->data, O_RDWR);
|
||||
int fd = open(blockdev_filename->data, O_RDWR);
|
||||
unique_fd fd_holder(fd);
|
||||
if (fd < 0) {
|
||||
ErrorAbort(state, "open \"%s\" failed: %s", blockdev_filename->data, strerror(errno));
|
||||
goto done;
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
|
||||
RangeSet rs;
|
||||
parse_range(ranges->data, rs);
|
||||
uint8_t buffer[BLOCKSIZE];
|
||||
|
||||
SHA_CTX ctx;
|
||||
SHA_init(&ctx);
|
||||
|
||||
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, "failed to seek %s: %s", blockdev_filename->data,
|
||||
strerror(errno));
|
||||
goto done;
|
||||
ErrorAbort(state, "failed to seek %s: %s", blockdev_filename->data, strerror(errno));
|
||||
return StringValue(strdup(""));
|
||||
}
|
||||
|
||||
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));
|
||||
goto done;
|
||||
}
|
||||
|
||||
SHA_update(&ctx, buffer, BLOCKSIZE);
|
||||
}
|
||||
}
|
||||
digest = SHA_final(&ctx);
|
||||
close(fd);
|
||||
|
||||
done:
|
||||
FreeValue(blockdev_filename);
|
||||
FreeValue(ranges);
|
||||
if (digest == nullptr) {
|
||||
return StringValue(strdup(""));
|
||||
} else {
|
||||
return StringValue(strdup(print_sha1(digest).c_str()));
|
||||
}
|
||||
|
||||
SHA_update(&ctx, buffer.data(), BLOCKSIZE);
|
||||
}
|
||||
}
|
||||
const uint8_t* digest = SHA_final(&ctx);
|
||||
|
||||
return StringValue(strdup(print_sha1(digest).c_str()));
|
||||
}
|
||||
|
||||
void RegisterBlockImageFunctions() {
|
||||
|
|
|
|||
Loading…
Reference in a new issue