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authorTao Bao <tbao@google.com>2015-08-28 01:41:21 +0200
committerTao Bao <tbao@google.com>2015-09-10 02:44:23 +0200
commit612336ddc1108c3adf43f309a326111cf01b4bcd (patch)
treeeab063209bbf7ba8f416c1952fd513913e99bc60
parentMerge "updater: Replace the pointers in LoadSrcTgtVersion[1-3]() parameter." (diff)
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-rw-r--r--updater/blockimg.cpp396
1 files changed, 168 insertions, 228 deletions
diff --git a/updater/blockimg.cpp b/updater/blockimg.cpp
index 091bedf53..6111d0d1e 100644
--- a/updater/blockimg.cpp
+++ b/updater/blockimg.cpp
@@ -162,6 +162,10 @@ static int read_all(int fd, uint8_t* data, size_t size) {
return 0;
}
+static int read_all(int fd, std::vector<uint8_t>& buffer, size_t size) {
+ return read_all(fd, buffer.data(), size);
+}
+
static int write_all(int fd, const uint8_t* data, size_t size) {
size_t written = 0;
while (written < size) {
@@ -176,6 +180,10 @@ static int write_all(int fd, const uint8_t* data, size_t size) {
return 0;
}
+static int write_all(int fd, const std::vector<uint8_t>& buffer, size_t size) {
+ return write_all(fd, buffer.data(), size);
+}
+
static bool check_lseek(int fd, off64_t offset, int whence) {
off64_t rc = TEMP_FAILURE_RETRY(lseek64(fd, offset, whence));
if (rc == -1) {
@@ -185,18 +193,11 @@ static bool check_lseek(int fd, off64_t offset, int whence) {
return true;
}
-static void allocate(size_t size, uint8_t** buffer, size_t* buffer_alloc) {
+static void allocate(size_t size, std::vector<uint8_t>& buffer) {
// if the buffer's big enough, reuse it.
- if (size <= *buffer_alloc) return;
-
- free(*buffer);
+ if (size <= buffer.size()) return;
- *buffer = (uint8_t*) malloc(size);
- if (*buffer == nullptr) {
- fprintf(stderr, "failed to allocate %zu bytes\n", size);
- exit(1);
- }
- *buffer_alloc = size;
+ buffer.resize(size);
}
struct RangeSinkState {
@@ -324,12 +325,9 @@ static void* unzip_new_data(void* cookie) {
return nullptr;
}
-static int ReadBlocks(const RangeSet& src, uint8_t* buffer, int fd) {
+static int ReadBlocks(const RangeSet& src, std::vector<uint8_t>& buffer, int fd) {
size_t p = 0;
-
- if (!buffer) {
- return -1;
- }
+ uint8_t* data = buffer.data();
for (size_t i = 0; i < src.count; ++i) {
if (!check_lseek(fd, (off64_t) src.pos[i * 2] * BLOCKSIZE, SEEK_SET)) {
@@ -338,7 +336,7 @@ static int ReadBlocks(const RangeSet& src, uint8_t* buffer, int fd) {
size_t size = (src.pos[i * 2 + 1] - src.pos[i * 2]) * BLOCKSIZE;
- if (read_all(fd, buffer + p, size) == -1) {
+ if (read_all(fd, data + p, size) == -1) {
return -1;
}
@@ -348,10 +346,8 @@ static int ReadBlocks(const RangeSet& src, uint8_t* buffer, int fd) {
return 0;
}
-static int WriteBlocks(const RangeSet& tgt, uint8_t* buffer, int fd) {
- if (!buffer) {
- return -1;
- }
+static int WriteBlocks(const RangeSet& tgt, const std::vector<uint8_t>& buffer, int fd) {
+ const uint8_t* data = buffer.data();
size_t p = 0;
for (size_t i = 0; i < tgt.count; ++i) {
@@ -361,7 +357,7 @@ static int WriteBlocks(const RangeSet& tgt, uint8_t* buffer, int fd) {
size_t size = (tgt.pos[i * 2 + 1] - tgt.pos[i * 2]) * BLOCKSIZE;
- if (write_all(fd, buffer + p, size) == -1) {
+ if (write_all(fd, data + p, size) == -1) {
return -1;
}
@@ -381,30 +377,29 @@ static int WriteBlocks(const RangeSet& tgt, uint8_t* buffer, int fd) {
// it to make it larger if necessary.
static int LoadSrcTgtVersion1(char** wordsave, RangeSet& tgt, size_t& src_blocks,
- uint8_t** buffer, size_t* buffer_alloc, int fd) {
+ std::vector<uint8_t>& buffer, int fd) {
+ // <src_range>
char* word = strtok_r(nullptr, " ", wordsave);
RangeSet src;
parse_range(word, src);
+ // <tgt_range>
word = strtok_r(nullptr, " ", wordsave);
parse_range(word, tgt);
- allocate(src.size * BLOCKSIZE, buffer, buffer_alloc);
- int rc = ReadBlocks(src, *buffer, fd);
+ allocate(src.size * BLOCKSIZE, buffer);
+ int rc = ReadBlocks(src, buffer, fd);
src_blocks = src.size;
return rc;
}
-static int VerifyBlocks(const std::string& expected, const uint8_t* buffer,
+static int VerifyBlocks(const std::string& expected, const std::vector<uint8_t>& buffer,
const size_t blocks, bool printerror) {
uint8_t digest[SHA_DIGEST_SIZE];
+ const uint8_t* data = buffer.data();
- if (!buffer) {
- return -1;
- }
-
- SHA_hash(buffer, blocks * BLOCKSIZE, digest);
+ SHA_hash(data, blocks * BLOCKSIZE, digest);
std::string hexdigest = print_sha1(digest);
@@ -516,8 +511,8 @@ static void DeleteStash(const std::string& base) {
}
static int LoadStash(const std::string& base, const std::string& id, bool verify, size_t* blocks,
- uint8_t** buffer, size_t* buffer_alloc, bool printnoent) {
- if (base.empty() || !buffer || !buffer_alloc) {
+ std::vector<uint8_t>& buffer, bool printnoent) {
+ if (base.empty()) {
return -1;
}
@@ -555,15 +550,15 @@ static int LoadStash(const std::string& base, const std::string& id, bool verify
return -1;
}
- allocate(sb.st_size, buffer, buffer_alloc);
+ allocate(sb.st_size, buffer);
- if (read_all(fd, *buffer, sb.st_size) == -1) {
+ if (read_all(fd, buffer, sb.st_size) == -1) {
return -1;
}
*blocks = sb.st_size / BLOCKSIZE;
- if (verify && VerifyBlocks(id, *buffer, *blocks, true) != 0) {
+ if (verify && VerifyBlocks(id, buffer, *blocks, true) != 0) {
fprintf(stderr, "unexpected contents in %s\n", fn.c_str());
DeleteFile(fn, nullptr);
return -1;
@@ -572,9 +567,9 @@ static int LoadStash(const std::string& base, const std::string& id, bool verify
return 0;
}
-static int WriteStash(const std::string& base, const std::string& id, int blocks, uint8_t* buffer,
- bool checkspace, bool *exists) {
- if (base.empty() || buffer == nullptr) {
+static int WriteStash(const std::string& base, const std::string& id, int blocks,
+ std::vector<uint8_t>& buffer, bool checkspace, bool *exists) {
+ if (base.empty()) {
return -1;
}
@@ -706,9 +701,9 @@ static int CreateStash(State* state, int maxblocks, const char* blockdev, std::s
return 0; // Using existing directory
}
-static int SaveStash(const std::string& base, char** wordsave, uint8_t** buffer,
- size_t* buffer_alloc, int fd, bool usehash) {
- if (!wordsave || !buffer || !buffer_alloc) {
+static int SaveStash(const std::string& base, char** wordsave, std::vector<uint8_t>& buffer,
+ int fd, bool usehash) {
+ if (!wordsave) {
return -1;
}
@@ -720,7 +715,7 @@ static int SaveStash(const std::string& base, char** wordsave, uint8_t** buffer,
std::string id(id_tok);
size_t blocks = 0;
- if (usehash && LoadStash(base, id, true, &blocks, buffer, buffer_alloc, false) == 0) {
+ if (usehash && LoadStash(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.
@@ -731,13 +726,13 @@ static int SaveStash(const std::string& base, char** wordsave, uint8_t** buffer,
RangeSet src;
parse_range(word, src);
- allocate(src.size * BLOCKSIZE, buffer, buffer_alloc);
- if (ReadBlocks(src, *buffer, fd) == -1) {
+ allocate(src.size * BLOCKSIZE, buffer);
+ if (ReadBlocks(src, buffer, fd) == -1) {
return -1;
}
blocks = src.size;
- if (usehash && VerifyBlocks(id, *buffer, blocks, true) != 0) {
+ 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
@@ -747,7 +742,7 @@ static int SaveStash(const std::string& base, char** wordsave, uint8_t** buffer,
}
fprintf(stderr, "stashing %zu blocks to %s\n", blocks, id.c_str());
- return WriteStash(base, id, blocks, *buffer, false, nullptr);
+ return WriteStash(base, id, blocks, buffer, false, nullptr);
}
static int FreeStash(const std::string& base, const char* id) {
@@ -762,16 +757,19 @@ static int FreeStash(const std::string& base, const char* id) {
return 0;
}
-static void MoveRange(uint8_t* dest, const RangeSet& locs, const uint8_t* source) {
+static void MoveRange(std::vector<uint8_t>& dest, const RangeSet& locs,
+ const std::vector<uint8_t>& source) {
// source contains packed data, which we want to move to the
- // locations given in *locs in the dest buffer. source and dest
+ // locations given in locs in the dest buffer. source and dest
// may be the same buffer.
+ const uint8_t* from = source.data();
+ uint8_t* to = dest.data();
size_t start = locs.size;
for (int i = locs.count-1; i >= 0; --i) {
size_t blocks = locs.pos[i*2+1] - locs.pos[i*2];
start -= blocks;
- memmove(dest + (locs.pos[i*2] * BLOCKSIZE), source + (start * BLOCKSIZE),
+ memmove(to + (locs.pos[i*2] * BLOCKSIZE), from + (start * BLOCKSIZE),
blocks * BLOCKSIZE);
}
}
@@ -794,30 +792,26 @@ static void MoveRange(uint8_t* dest, const RangeSet& locs, const uint8_t* source
// reallocated if needed to accommodate the source data. *tgt is the
// target RangeSet. Any stashes required are loaded using LoadStash.
-static int LoadSrcTgtVersion2(char** wordsave, RangeSet& tgt, size_t& src_blocks, uint8_t** buffer,
- size_t* buffer_alloc, int fd, const std::string& stashbase, bool* overlap) {
- char* word;
- char* colonsave;
- char* colon;
- RangeSet locs;
- size_t stashalloc = 0;
- uint8_t* stash = nullptr;
-
- word = strtok_r(nullptr, " ", wordsave);
+static int LoadSrcTgtVersion2(char** wordsave, RangeSet& tgt, size_t& src_blocks,
+ std::vector<uint8_t>& buffer, int fd, const std::string& stashbase, bool* overlap) {
+ // <tgt_range>
+ char* word = strtok_r(nullptr, " ", wordsave);
parse_range(word, tgt);
+ // <src_block_count>
word = strtok_r(nullptr, " ", wordsave);
src_blocks = strtol(word, nullptr, 0);
- allocate(src_blocks * BLOCKSIZE, buffer, buffer_alloc);
+ allocate(src_blocks * BLOCKSIZE, buffer);
+ // "-" or <src_range> [<src_loc>]
word = strtok_r(nullptr, " ", wordsave);
if (word[0] == '-' && word[1] == '\0') {
// no source ranges, only stashes
} else {
RangeSet src;
parse_range(word, src);
- int res = ReadBlocks(src, *buffer, fd);
+ int res = ReadBlocks(src, buffer, fd);
if (overlap) {
*overlap = range_overlaps(src, tgt);
@@ -833,18 +827,22 @@ static int LoadSrcTgtVersion2(char** wordsave, RangeSet& tgt, size_t& src_blocks
return 0;
}
+ RangeSet locs;
parse_range(word, locs);
- MoveRange(*buffer, locs, *buffer);
+ MoveRange(buffer, locs, buffer);
}
+ // <[stash_id:stash-range]>
+ char* colonsave;
while ((word = strtok_r(nullptr, " ", wordsave)) != nullptr) {
// Each word is a an index into the stash table, a colon, and
// then a rangeset describing where in the source block that
// stashed data should go.
colonsave = nullptr;
- colon = strtok_r(word, ":", &colonsave);
+ char* colon = strtok_r(word, ":", &colonsave);
- int res = LoadStash(stashbase, std::string(colon), false, nullptr, &stash, &stashalloc, true);
+ std::vector<uint8_t> stash;
+ int res = LoadStash(stashbase, std::string(colon), false, nullptr, stash, true);
if (res == -1) {
// These source blocks will fail verification if used later, but we
@@ -854,13 +852,10 @@ static int LoadSrcTgtVersion2(char** wordsave, RangeSet& tgt, size_t& src_blocks
}
colon = strtok_r(nullptr, ":", &colonsave);
+ RangeSet locs;
parse_range(colon, locs);
- MoveRange(*buffer, locs, stash);
- }
-
- if (stash) {
- free(stash);
+ MoveRange(buffer, locs, stash);
}
return 0;
@@ -881,8 +876,7 @@ struct CommandParameters {
size_t written;
NewThreadInfo nti;
pthread_t thread;
- size_t bufsize;
- uint8_t* buffer;
+ std::vector<uint8_t> buffer;
uint8_t* patch_start;
};
@@ -924,20 +918,19 @@ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t&
}
}
- if (LoadSrcTgtVersion2(&params.cpos, tgt, src_blocks, &params.buffer, &params.bufsize,
- params.fd, params.stashbase, &overlap) == -1) {
+ if (LoadSrcTgtVersion2(&params.cpos, tgt, src_blocks, params.buffer, params.fd,
+ params.stashbase, &overlap) == -1) {
return -1;
}
std::vector<uint8_t> tgtbuffer(tgt.size * BLOCKSIZE);
- if (ReadBlocks(tgt, tgtbuffer.data(), params.fd) == -1) {
+ if (ReadBlocks(tgt, tgtbuffer, params.fd) == -1) {
return -1;
}
- if (VerifyBlocks(tgthash, tgtbuffer.data(), tgt.size, false) == 0) {
+ if (VerifyBlocks(tgthash, tgtbuffer, tgt.size, false) == 0) {
// Target blocks already have expected content, command should be skipped
- fprintf(stderr, "verified, to return 1");
return 1;
}
@@ -948,7 +941,7 @@ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t&
fprintf(stderr, "stashing %zu overlapping blocks to %s\n", src_blocks, srchash);
bool stash_exists = false;
- if (WriteStash(params.stashbase, std::string(srchash), src_blocks, params.buffer, true,
+ if (WriteStash(params.stashbase, srchash, src_blocks, params.buffer, true,
&stash_exists) != 0) {
fprintf(stderr, "failed to stash overlapping source blocks\n");
return -1;
@@ -964,8 +957,7 @@ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t&
return 0;
}
- if (overlap && LoadStash(params.stashbase, std::string(srchash), true, nullptr, &params.buffer,
- &params.bufsize, true) == 0) {
+ if (overlap && LoadStash(params.stashbase, 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.
@@ -986,11 +978,10 @@ static int PerformCommandMove(CommandParameters& params) {
RangeSet tgt;
if (params.version == 1) {
- status = LoadSrcTgtVersion1(&params.cpos, tgt, blocks, &params.buffer,
- &params.bufsize, params.fd);
+ status = LoadSrcTgtVersion1(&params.cpos, tgt, blocks, params.buffer, params.fd);
} else if (params.version == 2) {
- status = LoadSrcTgtVersion2(&params.cpos, tgt, blocks, &params.buffer,
- &params.bufsize, params.fd, params.stashbase, nullptr);
+ status = LoadSrcTgtVersion2(&params.cpos, tgt, blocks, params.buffer, params.fd,
+ params.stashbase, nullptr);
} else if (params.version >= 3) {
status = LoadSrcTgtVersion3(params, tgt, blocks, true, overlap);
}
@@ -1030,8 +1021,8 @@ static int PerformCommandMove(CommandParameters& params) {
}
static int PerformCommandStash(CommandParameters& params) {
- return SaveStash(params.stashbase, &params.cpos, &params.buffer, &params.bufsize,
- params.fd, (params.version >= 3));
+ return SaveStash(params.stashbase, &params.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, &params.buffer, &params.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, " ", &params.cpos);
+ char* value = strtok_r(nullptr, " ", &params.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(&params.cpos, tgt, blocks, &params.buffer,
- &params.bufsize, params.fd);
+ status = LoadSrcTgtVersion1(&params.cpos, tgt, blocks, params.buffer, params.fd);
} else if (params.version == 2) {
- status = LoadSrcTgtVersion2(&params.cpos, tgt, blocks, &params.buffer,
- &params.bufsize, params.fd, params.stashbase, nullptr);
+ status = LoadSrcTgtVersion2(&params.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(&params, 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(&params.nti.mu, nullptr);
pthread_cond_init(&params.nti.cv, nullptr);
+ pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
int error = pthread_create(&params.thread, &attr, unzip_new_data, &params.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, " ", &params.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;
+ return StringValue(strdup(""));
}
- SHA_update(&ctx, buffer, BLOCKSIZE);
+ SHA_update(&ctx, buffer.data(), BLOCKSIZE);
}
}
- digest = SHA_final(&ctx);
- close(fd);
+ const uint8_t* digest = SHA_final(&ctx);
- done:
- FreeValue(blockdev_filename);
- FreeValue(ranges);
- if (digest == nullptr) {
- return StringValue(strdup(""));
- } else {
- return StringValue(strdup(print_sha1(digest).c_str()));
- }
+ return StringValue(strdup(print_sha1(digest).c_str()));
}
void RegisterBlockImageFunctions() {