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-rw-r--r--asn1_decoder.cpp4
-rw-r--r--bootloader_message/bootloader_message.cpp10
-rw-r--r--edify/expr.cpp2
-rw-r--r--otafault/ota_io.cpp2
-rw-r--r--otafault/ota_io.h2
-rw-r--r--recovery.cpp87
-rw-r--r--screen_ui.cpp6
-rw-r--r--screen_ui.h6
-rw-r--r--ui.cpp2
-rw-r--r--updater/blockimg.cpp797
-rw-r--r--updater/updater.cpp2
-rw-r--r--verifier.cpp2
-rw-r--r--verifier.h4
-rw-r--r--wear_touch.cpp2
14 files changed, 426 insertions, 502 deletions
diff --git a/asn1_decoder.cpp b/asn1_decoder.cpp
index a9dfccc58..285214f16 100644
--- a/asn1_decoder.cpp
+++ b/asn1_decoder.cpp
@@ -19,14 +19,14 @@
#include <stdint.h>
int asn1_context::peek_byte() const {
- if (length_ <= 0) {
+ if (length_ == 0) {
return -1;
}
return *p_;
}
int asn1_context::get_byte() {
- if (length_ <= 0) {
+ if (length_ == 0) {
return -1;
}
diff --git a/bootloader_message/bootloader_message.cpp b/bootloader_message/bootloader_message.cpp
index d8086be28..d17e055bb 100644
--- a/bootloader_message/bootloader_message.cpp
+++ b/bootloader_message/bootloader_message.cpp
@@ -19,6 +19,7 @@
#include <errno.h>
#include <fcntl.h>
#include <string.h>
+#include <unistd.h>
#include <string>
#include <vector>
@@ -30,8 +31,13 @@
#include <fs_mgr.h>
static std::string get_misc_blk_device(std::string* err) {
- std::unique_ptr<fstab, decltype(&fs_mgr_free_fstab)> fstab(fs_mgr_read_fstab_default(),
- fs_mgr_free_fstab);
+ std::unique_ptr<fstab, decltype(&fs_mgr_free_fstab)> fstab(nullptr, fs_mgr_free_fstab);
+ // Use different fstab paths for normal boot and recovery boot, respectively
+ if (access("/sbin/recovery", F_OK) == 0) {
+ fstab.reset(fs_mgr_read_fstab_with_dt("/etc/recovery.fstab"));
+ } else {
+ fstab.reset(fs_mgr_read_fstab_default());
+ }
if (!fstab) {
*err = "failed to read default fstab";
return "";
diff --git a/edify/expr.cpp b/edify/expr.cpp
index 2b7fd7a6a..54ab3325c 100644
--- a/edify/expr.cpp
+++ b/edify/expr.cpp
@@ -357,7 +357,7 @@ bool ReadArgs(State* state, const std::vector<std::unique_ptr<Expr>>& argv,
if (args == nullptr) {
return false;
}
- if (len == 0 || start + len > argv.size()) {
+ if (start + len > argv.size()) {
return false;
}
for (size_t i = start; i < start + len; ++i) {
diff --git a/otafault/ota_io.cpp b/otafault/ota_io.cpp
index f5b01136f..3a89bb5dd 100644
--- a/otafault/ota_io.cpp
+++ b/otafault/ota_io.cpp
@@ -89,7 +89,7 @@ static int __ota_fclose(FILE* fh) {
return fclose(fh);
}
-void OtaFcloser::operator()(FILE* f) {
+void OtaFcloser::operator()(FILE* f) const {
__ota_fclose(f);
};
diff --git a/otafault/ota_io.h b/otafault/ota_io.h
index 395b4230e..9428f1b1f 100644
--- a/otafault/ota_io.h
+++ b/otafault/ota_io.h
@@ -59,7 +59,7 @@ using unique_fd = android::base::unique_fd_impl<OtaCloser>;
int ota_close(unique_fd& fd);
struct OtaFcloser {
- void operator()(FILE*);
+ void operator()(FILE*) const;
};
using unique_file = std::unique_ptr<FILE, OtaFcloser>;
diff --git a/recovery.cpp b/recovery.cpp
index 91c511a6a..c2262161a 100644
--- a/recovery.cpp
+++ b/recovery.cpp
@@ -53,6 +53,7 @@
#include <cutils/properties.h> /* for property_list */
#include <healthd/BatteryMonitor.h>
#include <private/android_logger.h> /* private pmsg functions */
+#include <private/android_filesystem_config.h> /* for AID_SYSTEM */
#include <selinux/label.h>
#include <selinux/selinux.h>
#include <ziparchive/zip_archive.h>
@@ -460,9 +461,9 @@ static void copy_logs() {
copy_log_file(TEMPORARY_INSTALL_FILE, LAST_INSTALL_FILE, false);
save_kernel_log(LAST_KMSG_FILE);
chmod(LOG_FILE, 0600);
- chown(LOG_FILE, 1000, 1000); // system user
+ chown(LOG_FILE, AID_SYSTEM, AID_SYSTEM);
chmod(LAST_KMSG_FILE, 0600);
- chown(LAST_KMSG_FILE, 1000, 1000); // system user
+ chown(LAST_KMSG_FILE, AID_SYSTEM, AID_SYSTEM);
chmod(LAST_LOG_FILE, 0640);
chmod(LAST_INSTALL_FILE, 0644);
sync();
@@ -751,13 +752,15 @@ static bool wipe_data(Device* device) {
static bool prompt_and_wipe_data(Device* device) {
const char* const headers[] = {
- "Boot halted, user data is corrupt",
- "Wipe all user data to recover",
+ "Can't load Android system. Your data may be corrupt.",
+ "If you continue to get this message, you may need to",
+ "perform a factory data reset and erase all user data",
+ "stored on this device.",
NULL
};
const char* const items[] = {
- "Retry boot",
- "Wipe user data",
+ "Try again",
+ "Factory data reset",
NULL
};
for (;;) {
@@ -790,47 +793,45 @@ static bool wipe_cache(bool should_confirm, Device* device) {
return success;
}
-// Secure-wipe a given partition. It uses BLKSECDISCARD, if supported.
-// Otherwise, it goes with BLKDISCARD (if device supports BLKDISCARDZEROES) or
-// BLKZEROOUT.
+// Secure-wipe a given partition. It uses BLKSECDISCARD, if supported. Otherwise, it goes with
+// BLKDISCARD (if device supports BLKDISCARDZEROES) or BLKZEROOUT.
static bool secure_wipe_partition(const std::string& partition) {
- android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(partition.c_str(), O_WRONLY)));
- if (fd == -1) {
- PLOG(ERROR) << "failed to open \"" << partition << "\"";
- return false;
- }
+ android::base::unique_fd fd(TEMP_FAILURE_RETRY(open(partition.c_str(), O_WRONLY)));
+ if (fd == -1) {
+ PLOG(ERROR) << "Failed to open \"" << partition << "\"";
+ return false;
+ }
- uint64_t range[2] = {0, 0};
- if (ioctl(fd, BLKGETSIZE64, &range[1]) == -1 || range[1] == 0) {
- PLOG(ERROR) << "failed to get partition size";
+ uint64_t range[2] = { 0, 0 };
+ if (ioctl(fd, BLKGETSIZE64, &range[1]) == -1 || range[1] == 0) {
+ PLOG(ERROR) << "Failed to get partition size";
+ return false;
+ }
+ LOG(INFO) << "Secure-wiping \"" << partition << "\" from " << range[0] << " to " << range[1];
+
+ LOG(INFO) << " Trying BLKSECDISCARD...";
+ if (ioctl(fd, BLKSECDISCARD, &range) == -1) {
+ PLOG(WARNING) << " Failed";
+
+ // Use BLKDISCARD if it zeroes out blocks, otherwise use BLKZEROOUT.
+ unsigned int zeroes;
+ if (ioctl(fd, BLKDISCARDZEROES, &zeroes) == 0 && zeroes != 0) {
+ LOG(INFO) << " Trying BLKDISCARD...";
+ if (ioctl(fd, BLKDISCARD, &range) == -1) {
+ PLOG(ERROR) << " Failed";
return false;
+ }
+ } else {
+ LOG(INFO) << " Trying BLKZEROOUT...";
+ if (ioctl(fd, BLKZEROOUT, &range) == -1) {
+ PLOG(ERROR) << " Failed";
+ return false;
+ }
}
- printf("Secure-wiping \"%s\" from %" PRIu64 " to %" PRIu64 ".\n",
- partition.c_str(), range[0], range[1]);
-
- printf("Trying BLKSECDISCARD...\t");
- if (ioctl(fd, BLKSECDISCARD, &range) == -1) {
- printf("failed: %s\n", strerror(errno));
-
- // Use BLKDISCARD if it zeroes out blocks, otherwise use BLKZEROOUT.
- unsigned int zeroes;
- if (ioctl(fd, BLKDISCARDZEROES, &zeroes) == 0 && zeroes != 0) {
- printf("Trying BLKDISCARD...\t");
- if (ioctl(fd, BLKDISCARD, &range) == -1) {
- printf("failed: %s\n", strerror(errno));
- return false;
- }
- } else {
- printf("Trying BLKZEROOUT...\t");
- if (ioctl(fd, BLKZEROOUT, &range) == -1) {
- printf("failed: %s\n", strerror(errno));
- return false;
- }
- }
- }
+ }
- printf("done\n");
- return true;
+ LOG(INFO) << " Done";
+ return true;
}
// Check if the wipe package matches expectation:
@@ -862,7 +863,7 @@ static bool check_wipe_package(size_t wipe_package_size) {
return false;
}
std::string metadata;
- if (!read_metadata_from_package(&zip, &metadata)) {
+ if (!read_metadata_from_package(zip, &metadata)) {
CloseArchive(zip);
return false;
}
diff --git a/screen_ui.cpp b/screen_ui.cpp
index 706877b4d..bb2772dd8 100644
--- a/screen_ui.cpp
+++ b/screen_ui.cpp
@@ -98,7 +98,7 @@ GRSurface* ScreenRecoveryUI::GetCurrentText() {
}
}
-int ScreenRecoveryUI::PixelsFromDp(int dp) {
+int ScreenRecoveryUI::PixelsFromDp(int dp) const {
return dp * density_;
}
@@ -256,12 +256,12 @@ void ScreenRecoveryUI::DrawHorizontalRule(int* y) {
*y += 4;
}
-void ScreenRecoveryUI::DrawTextLine(int x, int* y, const char* line, bool bold) {
+void ScreenRecoveryUI::DrawTextLine(int x, int* y, const char* line, bool bold) const {
gr_text(gr_sys_font(), x, *y, line, bold);
*y += char_height_ + 4;
}
-void ScreenRecoveryUI::DrawTextLines(int x, int* y, const char* const* lines) {
+void ScreenRecoveryUI::DrawTextLines(int x, int* y, const char* const* lines) const {
for (size_t i = 0; lines != nullptr && lines[i] != nullptr; ++i) {
DrawTextLine(x, y, lines[i], false);
}
diff --git a/screen_ui.h b/screen_ui.h
index b2dcf4aeb..a2322c36c 100644
--- a/screen_ui.h
+++ b/screen_ui.h
@@ -160,14 +160,14 @@ class ScreenRecoveryUI : public RecoveryUI {
void LoadBitmap(const char* filename, GRSurface** surface);
void LoadLocalizedBitmap(const char* filename, GRSurface** surface);
- int PixelsFromDp(int dp);
+ int PixelsFromDp(int dp) const;
virtual int GetAnimationBaseline();
virtual int GetProgressBaseline();
virtual int GetTextBaseline();
void DrawHorizontalRule(int* y);
- void DrawTextLine(int x, int* y, const char* line, bool bold);
- void DrawTextLines(int x, int* y, const char* const* lines);
+ void DrawTextLine(int x, int* y, const char* line, bool bold) const;
+ void DrawTextLines(int x, int* y, const char* const* lines) const;
};
#endif // RECOVERY_UI_H
diff --git a/ui.cpp b/ui.cpp
index a796461c8..9194ae3df 100644
--- a/ui.cpp
+++ b/ui.cpp
@@ -240,7 +240,7 @@ void RecoveryUI::ProcessKey(int key_code, int updown) {
}
void* RecoveryUI::time_key_helper(void* cookie) {
- key_timer_t* info = (key_timer_t*) cookie;
+ key_timer_t* info = static_cast<key_timer_t*>(cookie);
info->ui->time_key(info->key_code, info->count);
delete info;
return nullptr;
diff --git a/updater/blockimg.cpp b/updater/blockimg.cpp
index efdfec19a..c614ccc47 100644
--- a/updater/blockimg.cpp
+++ b/updater/blockimg.cpp
@@ -356,7 +356,7 @@ static bool receive_new_data(const uint8_t* data, size_t size, void* cookie) {
}
static void* unzip_new_data(void* cookie) {
- NewThreadInfo* nti = (NewThreadInfo*) cookie;
+ NewThreadInfo* nti = static_cast<NewThreadInfo*>(cookie);
ProcessZipEntryContents(nti->za, &nti->entry, receive_new_data, nti);
return nullptr;
}
@@ -429,46 +429,11 @@ 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) {
-
- if (params.cpos + 1 >= params.tokens.size()) {
- LOG(ERROR) << "invalid parameters";
- return -1;
- }
-
- // <src_range>
- RangeSet src = parse_range(params.tokens[params.cpos++]);
-
- // <tgt_range>
- tgt = parse_range(params.tokens[params.cpos++]);
-
- allocate(src.size * BLOCKSIZE, buffer);
- int rc = ReadBlocks(src, buffer, fd);
- src_blocks = src.size;
-
- return rc;
-}
-
// 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;
- if (params.version < 3) {
- // TODO handle version 1,2
- LOG(WARNING) << "version number " << params.version << " is not supported to print hashes";
- return;
- }
-
CHECK(params.tokens[0] == "move" || params.tokens[0] == "bsdiff" ||
params.tokens[0] == "imgdiff");
@@ -651,8 +616,8 @@ static void DeleteStash(const std::string& base) {
}
}
-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.
@@ -674,17 +639,13 @@ static int LoadStash(CommandParameters& params, const std::string& base, const s
}
}
- 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);
@@ -735,7 +696,7 @@ 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;
}
@@ -895,52 +856,6 @@ static int CreateStash(State* state, size_t maxblocks, const std::string& blockd
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()) {
- LOG(ERROR) << "missing id and/or src range fields in stash command";
- 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;
- }
-
- RangeSet src = parse_range(params.tokens[params.cpos++]);
-
- allocate(src.size * BLOCKSIZE, buffer);
- if (ReadBlocks(src, buffer, fd) == -1) {
- return -1;
- }
- blocks = src.size;
- stash_map[id] = src;
-
- 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.
- LOG(ERROR) << "failed to load source blocks for stash " << id;
- return 0;
- }
-
- // In verify mode, we don't need to stash any blocks.
- if (!params.canwrite && usehash) {
- return 0;
- }
-
- LOG(INFO) << "stashing " << blocks << " blocks to " << id;
- params.stashed += blocks;
- return WriteStash(base, id, blocks, buffer, false, nullptr);
-}
-
static int FreeStash(const std::string& base, const std::string& id) {
if (base.empty() || id.empty()) {
return -1;
@@ -980,13 +895,12 @@ 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>.
@@ -1005,7 +919,7 @@ static int LoadSrcTgtVersion2(CommandParameters& params, RangeSet& tgt, size_t&
return -1;
}
- allocate(src_blocks * BLOCKSIZE, buffer);
+ allocate(src_blocks * BLOCKSIZE, params.buffer);
// "-" or <src_range> [<src_loc>]
if (params.tokens[params.cpos] == "-") {
@@ -1013,7 +927,7 @@ static int LoadSrcTgtVersion2(CommandParameters& params, RangeSet& tgt, size_t&
params.cpos++;
} else {
RangeSet src = parse_range(params.tokens[params.cpos++]);
- int res = ReadBlocks(src, buffer, fd);
+ int res = ReadBlocks(src, params.buffer, params.fd);
if (overlap) {
*overlap = range_overlaps(src, tgt);
@@ -1029,7 +943,7 @@ static int LoadSrcTgtVersion2(CommandParameters& params, RangeSet& tgt, size_t&
}
RangeSet locs = parse_range(params.tokens[params.cpos++]);
- MoveRange(buffer, locs, buffer);
+ MoveRange(params.buffer, locs, params.buffer);
}
// <[stash_id:stash_range]>
@@ -1044,7 +958,7 @@ static int LoadSrcTgtVersion2(CommandParameters& params, RangeSet& tgt, size_t&
}
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
@@ -1055,32 +969,41 @@ static int LoadSrcTgtVersion2(CommandParameters& params, RangeSet& tgt, size_t&
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()) {
LOG(ERROR) << "missing source hash";
return -1;
@@ -1099,8 +1022,7 @@ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t&
tgthash = params.tokens[params.cpos++];
}
- if (LoadSrcTgtVersion2(params, tgt, src_blocks, params.buffer, params.fd,
- params.stashbase, &overlap) == -1) {
+ if (LoadSrcTgtVersion2(params, tgt, src_blocks, &overlap) == -1) {
return -1;
}
@@ -1111,7 +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;
}
@@ -1130,25 +1052,24 @@ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t&
}
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
+ // Valid source data not available, update cannot be resumed.
LOG(ERROR) << "partition has unexpected contents";
PrintHashForCorruptedSourceBlocks(params, params.buffer);
@@ -1158,77 +1079,101 @@ static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t&
}
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) {
- LOG(ERROR) << "failed to read blocks for move";
- 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) {
- LOG(WARNING) << "warning: commands executed out of order [" << 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) {
- LOG(INFO) << " moving " << blocks << " blocks";
+ if (!params.freestash.empty()) {
+ FreeStash(params.stashbase, params.freestash);
+ params.freestash.clear();
+ }
- if (WriteBlocks(tgt, params.buffer, params.fd) == -1) {
- return -1;
- }
- } else {
- LOG(INFO) << "skipping " << blocks << " already moved 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()) {
- LOG(ERROR) << "missing stash id in free command";
- return -1;
- }
-
- const std::string& id = params.tokens[params.cpos++];
+ // <stash_id>
+ if (params.cpos >= params.tokens.size()) {
+ LOG(ERROR) << "missing stash id in free command";
+ return -1;
+ }
- if (stash_map.find(id) != stash_map.end()) {
- stash_map.erase(id);
- }
+ const std::string& id = params.tokens[params.cpos++];
+ stash_map.erase(id);
- 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) {
@@ -1339,15 +1284,7 @@ static int PerformCommandDiff(CommandParameters& params) {
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) {
LOG(ERROR) << "failed to read blocks for diff";
@@ -1473,301 +1410,281 @@ struct Command {
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;
+ 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("");
- }
+ 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;
- }
+ 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();
+ 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("");
- }
+ 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("");
- }
+ UpdaterInfo* ui = static_cast<UpdaterInfo*>(state->cookie);
+ if (ui == nullptr) {
+ return StringValue("");
+ }
- FILE* cmd_pipe = ui->cmd_pipe;
- ZipArchiveHandle za = ui->package_zip;
+ FILE* cmd_pipe = ui->cmd_pipe;
+ ZipArchiveHandle za = ui->package_zip;
- if (cmd_pipe == nullptr || za == nullptr) {
- return StringValue("");
- }
+ 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("");
- }
+ 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.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("");
- }
+ 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(&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) {
- PLOG(ERROR) << "pthread_create failed";
- return StringValue("");
- }
- }
+ if (params.canwrite) {
+ params.nti.za = za;
+ params.nti.entry = new_entry;
- 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("");
- }
+ 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);
- // First line in transfer list is the version number
- if (!android::base::ParseInt(lines[0], &params.version, 1, 4)) {
- LOG(ERROR) << "unexpected transfer list version [" << lines[0] << "]";
- return StringValue("");
+ int error = pthread_create(&params.thread, &attr, unzip_new_data, &params.nti);
+ if (error != 0) {
+ PLOG(ERROR) << "pthread_create failed";
+ return StringValue("");
}
+ }
- LOG(INFO) << "blockimg version is " << params.version;
+ 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("");
+ }
- // 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("");
- }
+ // First line in transfer list is the version number.
+ if (!android::base::ParseInt(lines[0], &params.version, 3, 4)) {
+ LOG(ERROR) << "unexpected transfer list version [" << lines[0] << "]";
+ return StringValue("");
+ }
- if (total_blocks == 0) {
- return StringValue("t");
- }
+ LOG(INFO) << "blockimg version is " << params.version;
- 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("");
- }
-
- // Third line is how many stash entries are needed simultaneously
- LOG(INFO) << "maximum stash entries " << lines[2];
+ // 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("");
+ }
- // 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("");
- }
+ if (total_blocks == 0) {
+ return StringValue("t");
+ }
- int res = CreateStash(state, stash_max_blocks, blockdev_filename->data, params.stashbase);
- if (res == -1) {
- return StringValue("");
- }
+ size_t start = 2;
+ if (lines.size() < 4) {
+ ErrorAbort(state, kArgsParsingFailure, "too few lines in the transfer list [%zu]\n",
+ lines.size());
+ return StringValue("");
+ }
- params.createdstash = res;
+ // Third line is how many stash entries are needed simultaneously.
+ LOG(INFO) << "maximum stash entries " << lines[2];
- start += 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("");
+ }
- // 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 res = CreateStash(state, stash_max_blocks, blockdev_filename->data, params.stashbase);
+ if (res == -1) {
+ return StringValue("");
+ }
- int rc = -1;
+ params.createdstash = res;
- // 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;
+ start += 2;
- params.tokens = android::base::Split(line, " ");
- params.cpos = 0;
- params.cmdname = params.tokens[params.cpos++].c_str();
- params.cmdline = line.c_str();
+ // 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];
+ }
- if (cmd_map.find(params.cmdname) == cmd_map.end()) {
- LOG(ERROR) << "unexpected command [" << params.cmdname << "]";
- goto pbiudone;
- }
+ int rc = -1;
- const Command* cmd = cmd_map[params.cmdname];
+ // 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;
- if (cmd->f != nullptr && cmd->f(params) == -1) {
- LOG(ERROR) << "failed to execute command [" << line << "]";
- goto pbiudone;
- }
+ params.tokens = android::base::Split(line, " ");
+ params.cpos = 0;
+ params.cmdname = params.tokens[params.cpos++].c_str();
+ params.cmdline = line.c_str();
- if (params.canwrite) {
- 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);
- }
+ if (cmd_map.find(params.cmdname) == cmd_map.end()) {
+ LOG(ERROR) << "unexpected command [" << params.cmdname << "]";
+ goto pbiudone;
}
- if (params.canwrite) {
- pthread_join(params.thread, nullptr);
-
- LOG(INFO) << "wrote " << params.written << " blocks; expected " << total_blocks;
- LOG(INFO) << "stashed " << params.stashed << " blocks";
- LOG(INFO) << "max alloc needed was " << params.buffer.size();
-
- 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";
- }
+ const Command* cmd = cmd_map[params.cmdname];
- rc = 0;
+ if (cmd->f != nullptr && cmd->f(params) == -1) {
+ LOG(ERROR) << "failed to execute command [" << line << "]";
+ goto pbiudone;
+ }
-pbiudone:
- if (ota_fsync(params.fd) == -1) {
+ if (params.canwrite) {
+ 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);
}
- // 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 (params.canwrite) {
+ pthread_join(params.thread, nullptr);
- if (failure_type != kNoCause && state->cause_code == kNoCause) {
- state->cause_code = failure_type;
+ LOG(INFO) << "wrote " << params.written << " blocks; expected " << total_blocks;
+ LOG(INFO) << "stashed " << params.stashed << " blocks";
+ LOG(INFO) << "max alloc needed was " << params.buffer.size();
+
+ 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";
+ }
- return StringValue(rc == 0 ? "t" : "");
-}
+ rc = 0;
-// 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.
+pbiudone:
+ 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.
+ *
+ * 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
diff --git a/updater/updater.cpp b/updater/updater.cpp
index 0693cbd98..c09e267a5 100644
--- a/updater/updater.cpp
+++ b/updater/updater.cpp
@@ -185,7 +185,7 @@ int main(int argc, char** argv) {
// Parse the error code in abort message.
// Example: "E30: This package is for bullhead devices."
if (!line.empty() && line[0] == 'E') {
- if (sscanf(line.c_str(), "E%u: ", &state.error_code) != 1) {
+ if (sscanf(line.c_str(), "E%d: ", &state.error_code) != 1) {
LOG(ERROR) << "Failed to parse error code: [" << line << "]";
}
}
diff --git a/verifier.cpp b/verifier.cpp
index 8be6da09f..2ef9c4c37 100644
--- a/verifier.cpp
+++ b/verifier.cpp
@@ -376,7 +376,7 @@ std::unique_ptr<RSA, RSADeleter> parse_rsa_key(FILE* file, uint32_t exponent) {
}
struct BNDeleter {
- void operator()(BIGNUM* bn) {
+ void operator()(BIGNUM* bn) const {
BN_free(bn);
}
};
diff --git a/verifier.h b/verifier.h
index 6bee74947..6fa8f2b0a 100644
--- a/verifier.h
+++ b/verifier.h
@@ -26,13 +26,13 @@
#include <openssl/sha.h>
struct RSADeleter {
- void operator()(RSA* rsa) {
+ void operator()(RSA* rsa) const {
RSA_free(rsa);
}
};
struct ECKEYDeleter {
- void operator()(EC_KEY* ec_key) {
+ void operator()(EC_KEY* ec_key) const {
EC_KEY_free(ec_key);
}
};
diff --git a/wear_touch.cpp b/wear_touch.cpp
index cf33daa9f..e2ab44d2d 100644
--- a/wear_touch.cpp
+++ b/wear_touch.cpp
@@ -118,7 +118,7 @@ void WearSwipeDetector::run() {
}
void* WearSwipeDetector::touch_thread(void* cookie) {
- ((WearSwipeDetector*)cookie)->run();
+ (static_cast<WearSwipeDetector*>(cookie))->run();
return NULL;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 18:04:39 +0100