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-rw-r--r--updater/Android.mk28
-rw-r--r--updater/blockimg.c1953
-rw-r--r--updater/blockimg.cpp1918
-rw-r--r--updater/install.cpp (renamed from updater/install.c)542
-rw-r--r--updater/install.h3
-rw-r--r--updater/updater.cpp (renamed from updater/updater.c)38
6 files changed, 2286 insertions, 2196 deletions
diff --git a/updater/Android.mk b/updater/Android.mk
index bc763a0ea..4ebb5483a 100644
--- a/updater/Android.mk
+++ b/updater/Android.mk
@@ -1,11 +1,23 @@
# Copyright 2009 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
LOCAL_PATH := $(call my-dir)
updater_src_files := \
- install.c \
- blockimg.c \
- updater.c
+ install.cpp \
+ blockimg.cpp \
+ updater.cpp
#
# Build a statically-linked binary to include in OTA packages
@@ -17,8 +29,12 @@ include $(CLEAR_VARS)
# needed only for OTA packages.)
LOCAL_MODULE_TAGS := eng
+LOCAL_CLANG := true
+
LOCAL_SRC_FILES := $(updater_src_files)
+LOCAL_STATIC_LIBRARIES += libfec libfec_rs libext4_utils_static libsquashfs_utils libcrypto_static
+
ifeq ($(TARGET_USERIMAGES_USE_EXT4), true)
LOCAL_CFLAGS += -DUSE_EXT4
LOCAL_CFLAGS += -Wno-unused-parameter
@@ -44,10 +60,12 @@ endif
endif
LOCAL_STATIC_LIBRARIES += $(TARGET_RECOVERY_UPDATER_LIBS) $(TARGET_RECOVERY_UPDATER_EXTRA_LIBS)
-LOCAL_STATIC_LIBRARIES += libapplypatch libedify libmtdutils libminzip libz
+LOCAL_STATIC_LIBRARIES += libapplypatch libbase libotafault libedify libmtdutils libminzip libz
LOCAL_STATIC_LIBRARIES += libflashutils libmmcutils libbmlutils
LOCAL_STATIC_LIBRARIES += libmincrypttwrp libbz
-LOCAL_STATIC_LIBRARIES += libcutils liblog libstdc++ libc
+LOCAL_STATIC_LIBRARIES += libcutils liblog libc
+LOCAL_STATIC_LIBRARIES += libselinux
+
LOCAL_STATIC_LIBRARIES += libselinux
tune2fs_static_libraries := \
libext2_com_err \
diff --git a/updater/blockimg.c b/updater/blockimg.c
deleted file mode 100644
index b006d10c5..000000000
--- a/updater/blockimg.c
+++ /dev/null
@@ -1,1953 +0,0 @@
-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <ctype.h>
-#include <errno.h>
-#include <dirent.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <libgen.h>
-#include <pthread.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/ioctl.h>
-#include <time.h>
-#include <unistd.h>
-
-#include "applypatch/applypatch.h"
-#include "edify/expr.h"
-#include "mincrypt/sha.h"
-#include "minzip/Hash.h"
-#include "updater.h"
-
-#define BLOCKSIZE 4096
-
-// Set this to 0 to interpret 'erase' transfers to mean do a
-// BLKDISCARD ioctl (the normal behavior). Set to 1 to interpret
-// erase to mean fill the region with zeroes.
-#define DEBUG_ERASE 0
-
-#ifndef BLKDISCARD
-#define BLKDISCARD _IO(0x12,119)
-#endif
-
-#define STASH_DIRECTORY_BASE "/cache/recovery"
-#define STASH_DIRECTORY_MODE 0700
-#define STASH_FILE_MODE 0600
-
-char* PrintSha1(const uint8_t* digest);
-
-typedef struct {
- int count;
- int size;
- int pos[0];
-} RangeSet;
-
-static RangeSet* parse_range(char* text) {
- char* save;
- int num;
- num = strtol(strtok_r(text, ",", &save), NULL, 0);
-
- RangeSet* out = malloc(sizeof(RangeSet) + num * sizeof(int));
- if (out == NULL) {
- fprintf(stderr, "failed to allocate range of %zu bytes\n",
- sizeof(RangeSet) + num * sizeof(int));
- exit(1);
- }
- out->count = num / 2;
- out->size = 0;
- int i;
- for (i = 0; i < num; ++i) {
- out->pos[i] = strtol(strtok_r(NULL, ",", &save), NULL, 0);
- if (i%2) {
- out->size += out->pos[i];
- } else {
- out->size -= out->pos[i];
- }
- }
-
- return out;
-}
-
-static int range_overlaps(RangeSet* r1, RangeSet* r2) {
- int i, j, r1_0, r1_1, r2_0, r2_1;
-
- if (!r1 || !r2) {
- return 0;
- }
-
- for (i = 0; i < r1->count; ++i) {
- r1_0 = r1->pos[i * 2];
- r1_1 = r1->pos[i * 2 + 1];
-
- for (j = 0; j < r2->count; ++j) {
- r2_0 = r2->pos[j * 2];
- r2_1 = r2->pos[j * 2 + 1];
-
- if (!(r2_0 >= r1_1 || r1_0 >= r2_1)) {
- return 1;
- }
- }
- }
-
- return 0;
-}
-
-static int read_all(int fd, uint8_t* data, size_t size) {
- size_t so_far = 0;
- while (so_far < size) {
- ssize_t r = TEMP_FAILURE_RETRY(read(fd, data+so_far, size-so_far));
- if (r == -1) {
- fprintf(stderr, "read failed: %s\n", strerror(errno));
- return -1;
- }
- so_far += r;
- }
- return 0;
-}
-
-static int write_all(int fd, const uint8_t* data, size_t size) {
- size_t written = 0;
- while (written < size) {
- ssize_t w = TEMP_FAILURE_RETRY(write(fd, data+written, size-written));
- if (w == -1) {
- fprintf(stderr, "write failed: %s\n", strerror(errno));
- return -1;
- }
- written += w;
- }
-
- if (fsync(fd) == -1) {
- fprintf(stderr, "fsync failed: %s\n", strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-static bool check_lseek(int fd, off64_t offset, int whence) {
- off64_t rc = TEMP_FAILURE_RETRY(lseek64(fd, offset, whence));
- if (rc == -1) {
- fprintf(stderr, "lseek64 failed: %s\n", strerror(errno));
- return false;
- }
- return true;
-}
-
-static void allocate(size_t size, uint8_t** buffer, size_t* buffer_alloc) {
- // if the buffer's big enough, reuse it.
- if (size <= *buffer_alloc) return;
-
- free(*buffer);
-
- *buffer = (uint8_t*) malloc(size);
- if (*buffer == NULL) {
- fprintf(stderr, "failed to allocate %zu bytes\n", size);
- exit(1);
- }
- *buffer_alloc = size;
-}
-
-typedef struct {
- int fd;
- RangeSet* tgt;
- int p_block;
- size_t p_remain;
-} RangeSinkState;
-
-static ssize_t RangeSinkWrite(const uint8_t* data, ssize_t size, void* token) {
- RangeSinkState* rss = (RangeSinkState*) token;
-
- if (rss->p_remain <= 0) {
- fprintf(stderr, "range sink write overrun");
- return 0;
- }
-
- ssize_t written = 0;
- while (size > 0) {
- size_t write_now = size;
-
- if (rss->p_remain < write_now) {
- write_now = rss->p_remain;
- }
-
- if (write_all(rss->fd, data, write_now) == -1) {
- break;
- }
-
- data += write_now;
- size -= write_now;
-
- rss->p_remain -= write_now;
- written += write_now;
-
- if (rss->p_remain == 0) {
- // move to the next block
- ++rss->p_block;
- if (rss->p_block < rss->tgt->count) {
- rss->p_remain = (rss->tgt->pos[rss->p_block * 2 + 1] -
- rss->tgt->pos[rss->p_block * 2]) * BLOCKSIZE;
-
- if (!check_lseek(rss->fd, (off64_t)rss->tgt->pos[rss->p_block*2] * BLOCKSIZE,
- SEEK_SET)) {
- break;
- }
- } else {
- // we can't write any more; return how many bytes have
- // been written so far.
- break;
- }
- }
- }
-
- return written;
-}
-
-// All of the data for all the 'new' transfers is contained in one
-// file in the update package, concatenated together in the order in
-// which transfers.list will need it. We want to stream it out of the
-// archive (it's compressed) without writing it to a temp file, but we
-// can't write each section until it's that transfer's turn to go.
-//
-// To achieve this, we expand the new data from the archive in a
-// background thread, and block that threads 'receive uncompressed
-// data' function until the main thread has reached a point where we
-// want some new data to be written. We signal the background thread
-// with the destination for the data and block the main thread,
-// waiting for the background thread to complete writing that section.
-// Then it signals the main thread to wake up and goes back to
-// blocking waiting for a transfer.
-//
-// NewThreadInfo is the struct used to pass information back and forth
-// between the two threads. When the main thread wants some data
-// written, it sets rss to the destination location and signals the
-// condition. When the background thread is done writing, it clears
-// rss and signals the condition again.
-
-typedef struct {
- ZipArchive* za;
- const ZipEntry* entry;
-
- RangeSinkState* rss;
-
- pthread_mutex_t mu;
- pthread_cond_t cv;
-} NewThreadInfo;
-
-static bool receive_new_data(const unsigned char* data, int size, void* cookie) {
- NewThreadInfo* nti = (NewThreadInfo*) cookie;
-
- while (size > 0) {
- // Wait for nti->rss to be non-NULL, indicating some of this
- // data is wanted.
- pthread_mutex_lock(&nti->mu);
- while (nti->rss == NULL) {
- pthread_cond_wait(&nti->cv, &nti->mu);
- }
- pthread_mutex_unlock(&nti->mu);
-
- // At this point nti->rss is set, and we own it. The main
- // thread is waiting for it to disappear from nti.
- ssize_t written = RangeSinkWrite(data, size, nti->rss);
- data += written;
- size -= written;
-
- if (nti->rss->p_block == nti->rss->tgt->count) {
- // we have written all the bytes desired by this rss.
-
- pthread_mutex_lock(&nti->mu);
- nti->rss = NULL;
- pthread_cond_broadcast(&nti->cv);
- pthread_mutex_unlock(&nti->mu);
- }
- }
-
- return true;
-}
-
-static void* unzip_new_data(void* cookie) {
- NewThreadInfo* nti = (NewThreadInfo*) cookie;
- mzProcessZipEntryContents(nti->za, nti->entry, receive_new_data, nti);
- return NULL;
-}
-
-static int ReadBlocks(RangeSet* src, uint8_t* buffer, int fd) {
- int i;
- size_t p = 0;
- size_t size;
-
- if (!src || !buffer) {
- return -1;
- }
-
- for (i = 0; i < src->count; ++i) {
- if (!check_lseek(fd, (off64_t) src->pos[i * 2] * BLOCKSIZE, SEEK_SET)) {
- return -1;
- }
-
- size = (src->pos[i * 2 + 1] - src->pos[i * 2]) * BLOCKSIZE;
-
- if (read_all(fd, buffer + p, size) == -1) {
- return -1;
- }
-
- p += size;
- }
-
- return 0;
-}
-
-static int WriteBlocks(RangeSet* tgt, uint8_t* buffer, int fd) {
- int i;
- size_t p = 0;
- size_t size;
-
- if (!tgt || !buffer) {
- return -1;
- }
-
- for (i = 0; i < tgt->count; ++i) {
- if (!check_lseek(fd, (off64_t) tgt->pos[i * 2] * BLOCKSIZE, SEEK_SET)) {
- return -1;
- }
-
- size = (tgt->pos[i * 2 + 1] - tgt->pos[i * 2]) * BLOCKSIZE;
-
- if (write_all(fd, buffer + p, size) == -1) {
- return -1;
- }
-
- p += size;
- }
-
- return 0;
-}
-
-// Do a source/target load for move/bsdiff/imgdiff in version 1.
-// 'wordsave' is the save_ptr of a strtok_r()-in-progress. We expect
-// to parse the remainder of the string as:
-//
-// <src_range> <tgt_range>
-//
-// The source range is loaded into the provided buffer, reallocating
-// it to make it larger if necessary. The target ranges are returned
-// in *tgt, if tgt is non-NULL.
-
-static int LoadSrcTgtVersion1(char** wordsave, RangeSet** tgt, int* src_blocks,
- uint8_t** buffer, size_t* buffer_alloc, int fd) {
- char* word;
- int rc;
-
- word = strtok_r(NULL, " ", wordsave);
- RangeSet* src = parse_range(word);
-
- if (tgt != NULL) {
- word = strtok_r(NULL, " ", wordsave);
- *tgt = parse_range(word);
- }
-
- allocate(src->size * BLOCKSIZE, buffer, buffer_alloc);
- rc = ReadBlocks(src, *buffer, fd);
- *src_blocks = src->size;
-
- free(src);
- return rc;
-}
-
-static int VerifyBlocks(const char *expected, const uint8_t *buffer,
- size_t blocks, int printerror) {
- char* hexdigest = NULL;
- int rc = -1;
- uint8_t digest[SHA_DIGEST_SIZE];
-
- if (!expected || !buffer) {
- return rc;
- }
-
- SHA_hash(buffer, blocks * BLOCKSIZE, digest);
- hexdigest = PrintSha1(digest);
-
- if (hexdigest != NULL) {
- rc = strcmp(expected, hexdigest);
-
- if (rc != 0 && printerror) {
- fprintf(stderr, "failed to verify blocks (expected %s, read %s)\n",
- expected, hexdigest);
- }
-
- free(hexdigest);
- }
-
- return rc;
-}
-
-static char* GetStashFileName(const char* base, const char* id, const char* postfix) {
- char* fn;
- int len;
- int res;
-
- if (base == NULL) {
- return NULL;
- }
-
- if (id == NULL) {
- id = "";
- }
-
- if (postfix == NULL) {
- postfix = "";
- }
-
- len = strlen(STASH_DIRECTORY_BASE) + 1 + strlen(base) + 1 + strlen(id) + strlen(postfix) + 1;
- fn = malloc(len);
-
- if (fn == NULL) {
- fprintf(stderr, "failed to malloc %d bytes for fn\n", len);
- return NULL;
- }
-
- res = snprintf(fn, len, STASH_DIRECTORY_BASE "/%s/%s%s", base, id, postfix);
-
- if (res < 0 || res >= len) {
- fprintf(stderr, "failed to format file name (return value %d)\n", res);
- free(fn);
- return NULL;
- }
-
- return fn;
-}
-
-typedef void (*StashCallback)(const char*, void*);
-
-// Does a best effort enumeration of stash files. Ignores possible non-file
-// items in the stash directory and continues despite of errors. Calls the
-// 'callback' function for each file and passes 'data' to the function as a
-// parameter.
-
-static void EnumerateStash(const char* dirname, StashCallback callback, void* data) {
- char* fn;
- DIR* directory;
- int len;
- int res;
- struct dirent* item;
-
- if (dirname == NULL || callback == NULL) {
- return;
- }
-
- directory = opendir(dirname);
-
- if (directory == NULL) {
- if (errno != ENOENT) {
- fprintf(stderr, "opendir \"%s\" failed: %s\n", dirname, strerror(errno));
- }
- return;
- }
-
- while ((item = readdir(directory)) != NULL) {
- if (item->d_type != DT_REG) {
- continue;
- }
-
- len = strlen(dirname) + 1 + strlen(item->d_name) + 1;
- fn = malloc(len);
-
- if (fn == NULL) {
- fprintf(stderr, "failed to malloc %d bytes for fn\n", len);
- continue;
- }
-
- res = snprintf(fn, len, "%s/%s", dirname, item->d_name);
-
- if (res < 0 || res >= len) {
- fprintf(stderr, "failed to format file name (return value %d)\n", res);
- free(fn);
- continue;
- }
-
- callback(fn, data);
- free(fn);
- }
-
- if (closedir(directory) == -1) {
- fprintf(stderr, "closedir \"%s\" failed: %s\n", dirname, strerror(errno));
- }
-}
-
-static void UpdateFileSize(const char* fn, void* data) {
- int* size = (int*) data;
- struct stat st;
-
- if (!fn || !data) {
- return;
- }
-
- if (stat(fn, &st) == -1) {
- fprintf(stderr, "stat \"%s\" failed: %s\n", fn, strerror(errno));
- return;
- }
-
- *size += st.st_size;
-}
-
-// Deletes the stash directory and all files in it. Assumes that it only
-// contains files. There is nothing we can do about unlikely, but possible
-// errors, so they are merely logged.
-
-static void DeleteFile(const char* fn, void* data) {
- if (fn) {
- fprintf(stderr, "deleting %s\n", fn);
-
- if (unlink(fn) == -1 && errno != ENOENT) {
- fprintf(stderr, "unlink \"%s\" failed: %s\n", fn, strerror(errno));
- }
- }
-}
-
-static void DeletePartial(const char* fn, void* data) {
- if (fn && strstr(fn, ".partial") != NULL) {
- DeleteFile(fn, data);
- }
-}
-
-static void DeleteStash(const char* base) {
- char* dirname;
-
- if (base == NULL) {
- return;
- }
-
- dirname = GetStashFileName(base, NULL, NULL);
-
- if (dirname == NULL) {
- return;
- }
-
- fprintf(stderr, "deleting stash %s\n", base);
- EnumerateStash(dirname, DeleteFile, NULL);
-
- if (rmdir(dirname) == -1) {
- if (errno != ENOENT && errno != ENOTDIR) {
- fprintf(stderr, "rmdir \"%s\" failed: %s\n", dirname, strerror(errno));
- }
- }
-
- free(dirname);
-}
-
-static int LoadStash(const char* base, const char* id, int verify, int* blocks, uint8_t** buffer,
- size_t* buffer_alloc, int printnoent) {
- char *fn = NULL;
- int blockcount = 0;
- int fd = -1;
- int rc = -1;
- int res;
- struct stat st;
-
- if (!base || !id || !buffer || !buffer_alloc) {
- goto lsout;
- }
-
- if (!blocks) {
- blocks = &blockcount;
- }
-
- fn = GetStashFileName(base, id, NULL);
-
- if (fn == NULL) {
- goto lsout;
- }
-
- res = stat(fn, &st);
-
- if (res == -1) {
- if (errno != ENOENT || printnoent) {
- fprintf(stderr, "stat \"%s\" failed: %s\n", fn, strerror(errno));
- }
- goto lsout;
- }
-
- fprintf(stderr, " loading %s\n", fn);
-
- if ((st.st_size % BLOCKSIZE) != 0) {
- fprintf(stderr, "%s size %zd not multiple of block size %d", fn, st.st_size, BLOCKSIZE);
- goto lsout;
- }
-
- fd = TEMP_FAILURE_RETRY(open(fn, O_RDONLY));
-
- if (fd == -1) {
- fprintf(stderr, "open \"%s\" failed: %s\n", fn, strerror(errno));
- goto lsout;
- }
-
- allocate(st.st_size, buffer, buffer_alloc);
-
- if (read_all(fd, *buffer, st.st_size) == -1) {
- goto lsout;
- }
-
- *blocks = st.st_size / BLOCKSIZE;
-
- if (verify && VerifyBlocks(id, *buffer, *blocks, 1) != 0) {
- fprintf(stderr, "unexpected contents in %s\n", fn);
- DeleteFile(fn, NULL);
- goto lsout;
- }
-
- rc = 0;
-
-lsout:
- if (fd != -1) {
- close(fd);
- }
-
- if (fn) {
- free(fn);
- }
-
- return rc;
-}
-
-static int WriteStash(const char* base, const char* id, int blocks, uint8_t* buffer,
- int checkspace, int *exists) {
- char *fn = NULL;
- char *cn = NULL;
- int fd = -1;
- int rc = -1;
- int dfd = -1;
- int res;
- struct stat st;
-
- if (base == NULL || buffer == NULL) {
- goto wsout;
- }
-
- if (checkspace && CacheSizeCheck(blocks * BLOCKSIZE) != 0) {
- fprintf(stderr, "not enough space to write stash\n");
- goto wsout;
- }
-
- fn = GetStashFileName(base, id, ".partial");
- cn = GetStashFileName(base, id, NULL);
-
- if (fn == NULL || cn == NULL) {
- goto wsout;
- }
-
- if (exists) {
- res = stat(cn, &st);
-
- if (res == 0) {
- // The file already exists and since the name is the hash of the contents,
- // it's safe to assume the contents are identical (accidental hash collisions
- // are unlikely)
- fprintf(stderr, " skipping %d existing blocks in %s\n", blocks, cn);
- *exists = 1;
- rc = 0;
- goto wsout;
- }
-
- *exists = 0;
- }
-
- fprintf(stderr, " writing %d blocks to %s\n", blocks, cn);
-
- fd = TEMP_FAILURE_RETRY(open(fn, O_WRONLY | O_CREAT | O_TRUNC | O_SYNC, STASH_FILE_MODE));
-
- if (fd == -1) {
- fprintf(stderr, "failed to create \"%s\": %s\n", fn, strerror(errno));
- goto wsout;
- }
-
- if (write_all(fd, buffer, blocks * BLOCKSIZE) == -1) {
- goto wsout;
- }
-
- if (fsync(fd) == -1) {
- fprintf(stderr, "fsync \"%s\" failed: %s\n", fn, strerror(errno));
- goto wsout;
- }
-
- if (rename(fn, cn) == -1) {
- fprintf(stderr, "rename(\"%s\", \"%s\") failed: %s\n", fn, cn, strerror(errno));
- goto wsout;
- }
-
- const char* dname;
- dname = dirname(cn);
- dfd = TEMP_FAILURE_RETRY(open(dname, O_RDONLY | O_DIRECTORY));
-
- if (dfd == -1) {
- fprintf(stderr, "failed to open \"%s\" failed: %s\n", dname, strerror(errno));
- goto wsout;
- }
-
- if (fsync(dfd) == -1) {
- fprintf(stderr, "fsync \"%s\" failed: %s\n", dname, strerror(errno));
- goto wsout;
- }
-
- rc = 0;
-
-wsout:
- if (fd != -1) {
- close(fd);
- }
-
- if (dfd != -1) {
- close(dfd);
- }
-
- if (fn) {
- free(fn);
- }
-
- if (cn) {
- free(cn);
- }
-
- return rc;
-}
-
-// Creates a directory for storing stash files and checks if the /cache partition
-// hash enough space for the expected amount of blocks we need to store. Returns
-// >0 if we created the directory, zero if it existed already, and <0 of failure.
-
-static int CreateStash(State* state, int maxblocks, const char* blockdev, char** base) {
- char* dirname = NULL;
- const uint8_t* digest;
- int rc = -1;
- int res;
- int size = 0;
- SHA_CTX ctx;
- struct stat st;
-
- if (blockdev == NULL || base == NULL) {
- goto csout;
- }
-
- // Stash directory should be different for each partition to avoid conflicts
- // when updating multiple partitions at the same time, so we use the hash of
- // the block device name as the base directory
- SHA_init(&ctx);
- SHA_update(&ctx, blockdev, strlen(blockdev));
- digest = SHA_final(&ctx);
- *base = PrintSha1(digest);
-
- if (*base == NULL) {
- goto csout;
- }
-
- dirname = GetStashFileName(*base, NULL, NULL);
-
- if (dirname == NULL) {
- goto csout;
- }
-
- res = stat(dirname, &st);
-
- if (res == -1 && errno != ENOENT) {
- ErrorAbort(state, "stat \"%s\" failed: %s\n", dirname, strerror(errno));
- goto csout;
- } else if (res != 0) {
- fprintf(stderr, "creating stash %s\n", dirname);
- res = mkdir(dirname, STASH_DIRECTORY_MODE);
-
- if (res != 0) {
- ErrorAbort(state, "mkdir \"%s\" failed: %s\n", dirname, strerror(errno));
- goto csout;
- }
-
- if (CacheSizeCheck(maxblocks * BLOCKSIZE) != 0) {
- ErrorAbort(state, "not enough space for stash\n");
- goto csout;
- }
-
- rc = 1; // Created directory
- goto csout;
- }
-
- fprintf(stderr, "using existing stash %s\n", dirname);
-
- // If the directory already exists, calculate the space already allocated to
- // stash files and check if there's enough for all required blocks. Delete any
- // partially completed stash files first.
-
- EnumerateStash(dirname, DeletePartial, NULL);
- EnumerateStash(dirname, UpdateFileSize, &size);
-
- size = (maxblocks * BLOCKSIZE) - size;
-
- if (size > 0 && CacheSizeCheck(size) != 0) {
- ErrorAbort(state, "not enough space for stash (%d more needed)\n", size);
- goto csout;
- }
-
- rc = 0; // Using existing directory
-
-csout:
- if (dirname) {
- free(dirname);
- }
-
- return rc;
-}
-
-static int SaveStash(const char* base, char** wordsave, uint8_t** buffer, size_t* buffer_alloc,
- int fd, int usehash, int* isunresumable) {
- char *id = NULL;
- int res = -1;
- int blocks = 0;
-
- if (!wordsave || !buffer || !buffer_alloc || !isunresumable) {
- return -1;
- }
-
- id = strtok_r(NULL, " ", wordsave);
-
- if (id == NULL) {
- fprintf(stderr, "missing id field in stash command\n");
- return -1;
- }
-
- if (usehash && LoadStash(base, id, 1, &blocks, buffer, buffer_alloc, 0) == 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;
- }
-
- if (LoadSrcTgtVersion1(wordsave, NULL, &blocks, buffer, buffer_alloc, fd) == -1) {
- return -1;
- }
-
- if (usehash && VerifyBlocks(id, *buffer, blocks, 1) != 0) {
- // Source blocks have unexpected contents. If we actually need this
- // data later, this is an unrecoverable error. However, the command
- // that uses the data may have already completed previously, so the
- // possible failure will occur during source block verification.
- fprintf(stderr, "failed to load source blocks for stash %s\n", id);
- return 0;
- }
-
- fprintf(stderr, "stashing %d blocks to %s\n", blocks, id);
- return WriteStash(base, id, blocks, *buffer, 0, NULL);
-}
-
-static int FreeStash(const char* base, const char* id) {
- char *fn = NULL;
-
- if (base == NULL || id == NULL) {
- return -1;
- }
-
- fn = GetStashFileName(base, id, NULL);
-
- if (fn == NULL) {
- return -1;
- }
-
- DeleteFile(fn, NULL);
- free(fn);
-
- return 0;
-}
-
-static void MoveRange(uint8_t* dest, RangeSet* locs, const 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
- // may be the same buffer.
-
- int start = locs->size;
- int i;
- for (i = locs->count-1; i >= 0; --i) {
- int blocks = locs->pos[i*2+1] - locs->pos[i*2];
- start -= blocks;
- memmove(dest + (locs->pos[i*2] * BLOCKSIZE), source + (start * BLOCKSIZE),
- blocks * BLOCKSIZE);
- }
-}
-
-// Do a source/target load for move/bsdiff/imgdiff in version 2.
-// 'wordsave' is the save_ptr of a strtok_r()-in-progress. We expect
-// to parse the remainder of the string 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)
-//
-// 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.
-
-static int LoadSrcTgtVersion2(char** wordsave, RangeSet** tgt, int* src_blocks,
- uint8_t** buffer, size_t* buffer_alloc, int fd,
- const char* stashbase, int* overlap) {
- char* word;
- char* colonsave;
- char* colon;
- int id;
- int res;
- RangeSet* locs;
- size_t stashalloc = 0;
- uint8_t* stash = NULL;
-
- if (tgt != NULL) {
- word = strtok_r(NULL, " ", wordsave);
- *tgt = parse_range(word);
- }
-
- word = strtok_r(NULL, " ", wordsave);
- *src_blocks = strtol(word, NULL, 0);
-
- allocate(*src_blocks * BLOCKSIZE, buffer, buffer_alloc);
-
- word = strtok_r(NULL, " ", wordsave);
- if (word[0] == '-' && word[1] == '\0') {
- // no source ranges, only stashes
- } else {
- RangeSet* src = parse_range(word);
- res = ReadBlocks(src, *buffer, fd);
-
- if (overlap && tgt) {
- *overlap = range_overlaps(src, *tgt);
- }
-
- free(src);
-
- if (res == -1) {
- return -1;
- }
-
- word = strtok_r(NULL, " ", wordsave);
- if (word == NULL) {
- // no stashes, only source range
- return 0;
- }
-
- locs = parse_range(word);
- MoveRange(*buffer, locs, *buffer);
- free(locs);
- }
-
- while ((word = strtok_r(NULL, " ", wordsave)) != NULL) {
- // 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 = NULL;
- colon = strtok_r(word, ":", &colonsave);
-
- res = LoadStash(stashbase, colon, 0, NULL, &stash, &stashalloc, 1);
-
- if (res == -1) {
- // These source blocks will fail verification if used later, but we
- // will let the caller decide if this is a fatal failure
- fprintf(stderr, "failed to load stash %s\n", colon);
- continue;
- }
-
- colon = strtok_r(NULL, ":", &colonsave);
- locs = parse_range(colon);
-
- MoveRange(*buffer, locs, stash);
- free(locs);
- }
-
- if (stash) {
- free(stash);
- }
-
- return 0;
-}
-
-// Parameters for transfer list command functions
-typedef struct {
- char* cmdname;
- char* cpos;
- char* freestash;
- char* stashbase;
- int canwrite;
- int createdstash;
- int fd;
- int foundwrites;
- int isunresumable;
- int version;
- int written;
- NewThreadInfo nti;
- pthread_t thread;
- size_t bufsize;
- uint8_t* buffer;
- uint8_t* patch_start;
-} CommandParameters;
-
-// 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.
-
-static int LoadSrcTgtVersion3(CommandParameters* params, RangeSet** tgt, int* src_blocks,
- int onehash, int* overlap) {
- char* srchash = NULL;
- char* tgthash = NULL;
- int stash_exists = 0;
- int overlap_blocks = 0;
- int rc = -1;
- uint8_t* tgtbuffer = NULL;
-
- if (!params|| !tgt || !src_blocks || !overlap) {
- goto v3out;
- }
-
- srchash = strtok_r(NULL, " ", &params->cpos);
-
- if (srchash == NULL) {
- fprintf(stderr, "missing source hash\n");
- goto v3out;
- }
-
- if (onehash) {
- tgthash = srchash;
- } else {
- tgthash = strtok_r(NULL, " ", &params->cpos);
-
- if (tgthash == NULL) {
- fprintf(stderr, "missing target hash\n");
- goto v3out;
- }
- }
-
- if (LoadSrcTgtVersion2(&params->cpos, tgt, src_blocks, &params->buffer, &params->bufsize,
- params->fd, params->stashbase, overlap) == -1) {
- goto v3out;
- }
-
- tgtbuffer = (uint8_t*) malloc((*tgt)->size * BLOCKSIZE);
-
- if (tgtbuffer == NULL) {
- fprintf(stderr, "failed to allocate %d bytes\n", (*tgt)->size * BLOCKSIZE);
- goto v3out;
- }
-
- if (ReadBlocks(*tgt, tgtbuffer, params->fd) == -1) {
- goto v3out;
- }
-
- if (VerifyBlocks(tgthash, tgtbuffer, (*tgt)->size, 0) == 0) {
- // Target blocks already have expected content, command should be skipped
- rc = 1;
- goto v3out;
- }
-
- if (VerifyBlocks(srchash, params->buffer, *src_blocks, 1) == 0) {
- // If source and target blocks overlap, stash the source blocks so we can
- // resume from possible write errors
- if (*overlap) {
- fprintf(stderr, "stashing %d overlapping blocks to %s\n", *src_blocks,
- srchash);
-
- if (WriteStash(params->stashbase, srchash, *src_blocks, params->buffer, 1,
- &stash_exists) != 0) {
- fprintf(stderr, "failed to stash overlapping source blocks\n");
- goto v3out;
- }
-
- // Can be deleted when the write has completed
- if (!stash_exists) {
- params->freestash = srchash;
- }
- }
-
- // Source blocks have expected content, command can proceed
- rc = 0;
- goto v3out;
- }
-
- if (*overlap && LoadStash(params->stashbase, srchash, 1, NULL, &params->buffer,
- &params->bufsize, 1) == 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.
- rc = 0;
- goto v3out;
- }
-
- // Valid source data not available, update cannot be resumed
- fprintf(stderr, "partition has unexpected contents\n");
- params->isunresumable = 1;
-
-v3out:
- if (tgtbuffer) {
- free(tgtbuffer);
- }
-
- return rc;
-}
-
-static int PerformCommandMove(CommandParameters* params) {
- int blocks = 0;
- int overlap = 0;
- int rc = -1;
- int status = 0;
- RangeSet* tgt = NULL;
-
- if (!params) {
- goto pcmout;
- }
-
- if (params->version == 1) {
- status = LoadSrcTgtVersion1(&params->cpos, &tgt, &blocks, &params->buffer,
- &params->bufsize, params->fd);
- } else if (params->version == 2) {
- status = LoadSrcTgtVersion2(&params->cpos, &tgt, &blocks, &params->buffer,
- &params->bufsize, params->fd, params->stashbase, NULL);
- } else if (params->version >= 3) {
- status = LoadSrcTgtVersion3(params, &tgt, &blocks, 1, &overlap);
- }
-
- if (status == -1) {
- fprintf(stderr, "failed to read blocks for move\n");
- goto pcmout;
- }
-
- if (status == 0) {
- params->foundwrites = 1;
- } else if (params->foundwrites) {
- fprintf(stderr, "warning: commands executed out of order [%s]\n", params->cmdname);
- }
-
- if (params->canwrite) {
- if (status == 0) {
- fprintf(stderr, " moving %d blocks\n", blocks);
-
- if (WriteBlocks(tgt, params->buffer, params->fd) == -1) {
- goto pcmout;
- }
- } else {
- fprintf(stderr, "skipping %d already moved blocks\n", blocks);
- }
-
- }
-
- if (params->freestash) {
- FreeStash(params->stashbase, params->freestash);
- params->freestash = NULL;
- }
-
- params->written += tgt->size;
- rc = 0;
-
-pcmout:
- if (tgt) {
- free(tgt);
- }
-
- return rc;
-}
-
-static int PerformCommandStash(CommandParameters* params) {
- if (!params) {
- return -1;
- }
-
- return SaveStash(params->stashbase, &params->cpos, &params->buffer, &params->bufsize,
- params->fd, (params->version >= 3), &params->isunresumable);
-}
-
-static int PerformCommandFree(CommandParameters* params) {
- if (!params) {
- return -1;
- }
-
- if (params->createdstash || params->canwrite) {
- return FreeStash(params->stashbase, params->cpos);
- }
-
- return 0;
-}
-
-static int PerformCommandZero(CommandParameters* params) {
- char* range = NULL;
- int i;
- int j;
- int rc = -1;
- RangeSet* tgt = NULL;
-
- if (!params) {
- goto pczout;
- }
-
- range = strtok_r(NULL, " ", &params->cpos);
-
- if (range == NULL) {
- fprintf(stderr, "missing target blocks for zero\n");
- goto pczout;
- }
-
- tgt = parse_range(range);
-
- fprintf(stderr, " zeroing %d blocks\n", tgt->size);
-
- allocate(BLOCKSIZE, &params->buffer, &params->bufsize);
- memset(params->buffer, 0, BLOCKSIZE);
-
- if (params->canwrite) {
- for (i = 0; i < tgt->count; ++i) {
- if (!check_lseek(params->fd, (off64_t) tgt->pos[i * 2] * BLOCKSIZE, SEEK_SET)) {
- goto pczout;
- }
-
- for (j = tgt->pos[i * 2]; j < tgt->pos[i * 2 + 1]; ++j) {
- if (write_all(params->fd, params->buffer, BLOCKSIZE) == -1) {
- goto pczout;
- }
- }
- }
- }
-
- if (params->cmdname[0] == 'z') {
- // Update only for the zero command, as the erase command will call
- // this if DEBUG_ERASE is defined.
- params->written += tgt->size;
- }
-
- rc = 0;
-
-pczout:
- if (tgt) {
- free(tgt);
- }
-
- return rc;
-}
-
-static int PerformCommandNew(CommandParameters* params) {
- char* range = NULL;
- int rc = -1;
- RangeSet* tgt = NULL;
- RangeSinkState rss;
-
- if (!params) {
- goto pcnout;
- }
-
- range = strtok_r(NULL, " ", &params->cpos);
-
- if (range == NULL) {
- goto pcnout;
- }
-
- tgt = parse_range(range);
-
- if (params->canwrite) {
- fprintf(stderr, " writing %d blocks of new data\n", tgt->size);
-
- rss.fd = params->fd;
- rss.tgt = tgt;
- rss.p_block = 0;
- rss.p_remain = (tgt->pos[1] - tgt->pos[0]) * BLOCKSIZE;
-
- if (!check_lseek(params->fd, (off64_t) tgt->pos[0] * BLOCKSIZE, SEEK_SET)) {
- goto pcnout;
- }
-
- pthread_mutex_lock(&params->nti.mu);
- params->nti.rss = &rss;
- pthread_cond_broadcast(&params->nti.cv);
-
- while (params->nti.rss) {
- pthread_cond_wait(&params->nti.cv, &params->nti.mu);
- }
-
- pthread_mutex_unlock(&params->nti.mu);
- }
-
- params->written += tgt->size;
- rc = 0;
-
-pcnout:
- if (tgt) {
- free(tgt);
- }
-
- return rc;
-}
-
-static int PerformCommandDiff(CommandParameters* params) {
- char* logparams = NULL;
- char* value = NULL;
- int blocks = 0;
- int overlap = 0;
- int rc = -1;
- int status = 0;
- RangeSet* tgt = NULL;
- RangeSinkState rss;
- size_t len = 0;
- size_t offset = 0;
- Value patch_value;
-
- if (!params) {
- goto pcdout;
- }
-
- logparams = strdup(params->cpos);
- value = strtok_r(NULL, " ", &params->cpos);
-
- if (value == NULL) {
- fprintf(stderr, "missing patch offset for %s\n", params->cmdname);
- goto pcdout;
- }
-
- offset = strtoul(value, NULL, 0);
-
- value = strtok_r(NULL, " ", &params->cpos);
-
- if (value == NULL) {
- fprintf(stderr, "missing patch length for %s\n", params->cmdname);
- goto pcdout;
- }
-
- len = strtoul(value, NULL, 0);
-
- if (params->version == 1) {
- status = LoadSrcTgtVersion1(&params->cpos, &tgt, &blocks, &params->buffer,
- &params->bufsize, params->fd);
- } else if (params->version == 2) {
- status = LoadSrcTgtVersion2(&params->cpos, &tgt, &blocks, &params->buffer,
- &params->bufsize, params->fd, params->stashbase, NULL);
- } else if (params->version >= 3) {
- status = LoadSrcTgtVersion3(params, &tgt, &blocks, 0, &overlap);
- }
-
- if (status == -1) {
- fprintf(stderr, "failed to read blocks for diff\n");
- goto pcdout;
- }
-
- if (status == 0) {
- params->foundwrites = 1;
- } else if (params->foundwrites) {
- fprintf(stderr, "warning: commands executed out of order [%s]\n", params->cmdname);
- }
-
- if (params->canwrite) {
- if (status == 0) {
- fprintf(stderr, "patching %d blocks to %d\n", blocks, tgt->size);
-
- patch_value.type = VAL_BLOB;
- patch_value.size = len;
- patch_value.data = (char*) (params->patch_start + offset);
-
- rss.fd = params->fd;
- rss.tgt = tgt;
- rss.p_block = 0;
- rss.p_remain = (tgt->pos[1] - tgt->pos[0]) * BLOCKSIZE;
-
- if (!check_lseek(params->fd, (off64_t) tgt->pos[0] * BLOCKSIZE, SEEK_SET)) {
- goto pcdout;
- }
-
- if (params->cmdname[0] == 'i') { // imgdiff
- ApplyImagePatch(params->buffer, blocks * BLOCKSIZE, &patch_value,
- &RangeSinkWrite, &rss, NULL, NULL);
- } else {
- ApplyBSDiffPatch(params->buffer, blocks * BLOCKSIZE, &patch_value,
- 0, &RangeSinkWrite, &rss, NULL);
- }
-
- // We expect the output of the patcher to fill the tgt ranges exactly.
- if (rss.p_block != tgt->count || rss.p_remain != 0) {
- fprintf(stderr, "range sink underrun?\n");
- }
- } else {
- fprintf(stderr, "skipping %d blocks already patched to %d [%s]\n",
- blocks, tgt->size, logparams);
- }
- }
-
- if (params->freestash) {
- FreeStash(params->stashbase, params->freestash);
- params->freestash = NULL;
- }
-
- params->written += tgt->size;
- rc = 0;
-
-pcdout:
- if (logparams) {
- free(logparams);
- }
-
- if (tgt) {
- free(tgt);
- }
-
- return rc;
-}
-
-static int PerformCommandErase(CommandParameters* params) {
- char* range = NULL;
- int i;
- int rc = -1;
- RangeSet* tgt = NULL;
- struct stat st;
- uint64_t blocks[2];
-
- if (DEBUG_ERASE) {
- return PerformCommandZero(params);
- }
-
- if (!params) {
- goto pceout;
- }
-
- if (fstat(params->fd, &st) == -1) {
- fprintf(stderr, "failed to fstat device to erase: %s\n", strerror(errno));
- goto pceout;
- }
-
- if (!S_ISBLK(st.st_mode)) {
- fprintf(stderr, "not a block device; skipping erase\n");
- goto pceout;
- }
-
- range = strtok_r(NULL, " ", &params->cpos);
-
- if (range == NULL) {
- fprintf(stderr, "missing target blocks for zero\n");
- goto pceout;
- }
-
- tgt = parse_range(range);
-
- if (params->canwrite) {
- fprintf(stderr, " erasing %d blocks\n", tgt->size);
-
- for (i = 0; i < tgt->count; ++i) {
- // offset in bytes
- blocks[0] = tgt->pos[i * 2] * (uint64_t) BLOCKSIZE;
- // length in bytes
- blocks[1] = (tgt->pos[i * 2 + 1] - tgt->pos[i * 2]) * (uint64_t) BLOCKSIZE;
-
- if (ioctl(params->fd, BLKDISCARD, &blocks) == -1) {
- fprintf(stderr, "BLKDISCARD ioctl failed: %s\n", strerror(errno));
- goto pceout;
- }
- }
- }
-
- rc = 0;
-
-pceout:
- if (tgt) {
- free(tgt);
- }
-
- return rc;
-}
-
-// Definitions for transfer list command functions
-typedef int (*CommandFunction)(CommandParameters*);
-
-typedef struct {
- const char* name;
- CommandFunction f;
-} Command;
-
-// CompareCommands and CompareCommandNames are for the hash table
-
-static int CompareCommands(const void* c1, const void* c2) {
- return strcmp(((const Command*) c1)->name, ((const Command*) c2)->name);
-}
-
-static int CompareCommandNames(const void* c1, const void* c2) {
- return strcmp(((const Command*) c1)->name, (const char*) c2);
-}
-
-// HashString is used to hash command names for the hash table
-
-static unsigned int HashString(const char *s) {
- unsigned int hash = 0;
- if (s) {
- while (*s) {
- hash = hash * 33 + *s++;
- }
- }
- return hash;
-}
-
-// args:
-// - block device (or file) to modify in-place
-// - transfer list (blob)
-// - new data stream (filename within package.zip)
-// - patch stream (filename within package.zip, must be uncompressed)
-
-static Value* PerformBlockImageUpdate(const char* name, State* state, int argc, Expr* argv[],
- const Command* commands, int cmdcount, int dryrun) {
-
- char* line = NULL;
- char* linesave = NULL;
- char* logcmd = NULL;
- char* transfer_list = NULL;
- CommandParameters params;
- const Command* cmd = NULL;
- const ZipEntry* new_entry = NULL;
- const ZipEntry* patch_entry = NULL;
- FILE* cmd_pipe = NULL;
- HashTable* cmdht = NULL;
- int i;
- int res;
- int rc = -1;
- int stash_max_blocks = 0;
- int total_blocks = 0;
- pthread_attr_t attr;
- unsigned int cmdhash;
- UpdaterInfo* ui = NULL;
- Value* blockdev_filename = NULL;
- Value* new_data_fn = NULL;
- Value* patch_data_fn = NULL;
- Value* transfer_list_value = NULL;
- ZipArchive* za = NULL;
-
- memset(&params, 0, sizeof(params));
- params.canwrite = !dryrun;
-
- fprintf(stderr, "performing %s\n", dryrun ? "verification" : "update");
-
- if (ReadValueArgs(state, argv, 4, &blockdev_filename, &transfer_list_value,
- &new_data_fn, &patch_data_fn) < 0) {
- goto pbiudone;
- }
-
- if (blockdev_filename->type != VAL_STRING) {
- ErrorAbort(state, "blockdev_filename argument to %s must be string", name);
- goto pbiudone;
- }
- if (transfer_list_value->type != VAL_BLOB) {
- ErrorAbort(state, "transfer_list argument to %s must be blob", name);
- goto pbiudone;
- }
- if (new_data_fn->type != VAL_STRING) {
- ErrorAbort(state, "new_data_fn argument to %s must be string", name);
- goto pbiudone;
- }
- if (patch_data_fn->type != VAL_STRING) {
- ErrorAbort(state, "patch_data_fn argument to %s must be string", name);
- goto pbiudone;
- }
-
- ui = (UpdaterInfo*) state->cookie;
-
- if (ui == NULL) {
- goto pbiudone;
- }
-
- cmd_pipe = ui->cmd_pipe;
- za = ui->package_zip;
-
- if (cmd_pipe == NULL || za == NULL) {
- goto pbiudone;
- }
-
- patch_entry = mzFindZipEntry(za, patch_data_fn->data);
-
- if (patch_entry == NULL) {
- fprintf(stderr, "%s(): no file \"%s\" in package", name, patch_data_fn->data);
- goto pbiudone;
- }
-
- params.patch_start = ui->package_zip_addr + mzGetZipEntryOffset(patch_entry);
- new_entry = mzFindZipEntry(za, new_data_fn->data);
-
- if (new_entry == NULL) {
- fprintf(stderr, "%s(): no file \"%s\" in package", name, new_data_fn->data);
- goto pbiudone;
- }
-
- params.fd = TEMP_FAILURE_RETRY(open(blockdev_filename->data, O_RDWR));
-
- if (params.fd == -1) {
- fprintf(stderr, "open \"%s\" failed: %s\n", blockdev_filename->data, strerror(errno));
- goto pbiudone;
- }
-
- if (params.canwrite) {
- params.nti.za = za;
- params.nti.entry = new_entry;
-
- pthread_mutex_init(&params.nti.mu, NULL);
- pthread_cond_init(&params.nti.cv, NULL);
- 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;
- }
- }
-
- // 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 = malloc(transfer_list_value->size + 1);
-
- if (transfer_list == NULL) {
- 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';
-
- // First line in transfer list is the version number
- line = strtok_r(transfer_list, "\n", &linesave);
- params.version = strtol(line, NULL, 0);
-
- if (params.version < 1 || params.version > 3) {
- fprintf(stderr, "unexpected transfer list version [%s]\n", line);
- goto pbiudone;
- }
-
- 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(NULL, "\n", &linesave);
- total_blocks = strtol(line, NULL, 0);
-
- if (total_blocks < 0) {
- ErrorAbort(state, "unexpected block count [%s]\n", line);
- goto pbiudone;
- } else if (total_blocks == 0) {
- rc = 0;
- goto pbiudone;
- }
-
- if (params.version >= 2) {
- // Third line is how many stash entries are needed simultaneously
- line = strtok_r(NULL, "\n", &linesave);
- fprintf(stderr, "maximum stash entries %s\n", line);
-
- // Fourth line is the maximum number of blocks that will be stashed simultaneously
- line = strtok_r(NULL, "\n", &linesave);
- stash_max_blocks = strtol(line, NULL, 0);
-
- if (stash_max_blocks < 0) {
- ErrorAbort(state, "unexpected maximum stash blocks [%s]\n", line);
- goto pbiudone;
- }
-
- if (stash_max_blocks >= 0) {
- res = CreateStash(state, stash_max_blocks, blockdev_filename->data,
- &params.stashbase);
-
- if (res == -1) {
- goto pbiudone;
- }
-
- params.createdstash = res;
- }
- }
-
- // Build a hash table of the available commands
- cmdht = mzHashTableCreate(cmdcount, NULL);
-
- for (i = 0; i < cmdcount; ++i) {
- cmdhash = HashString(commands[i].name);
- mzHashTableLookup(cmdht, cmdhash, (void*) &commands[i], CompareCommands, true);
- }
-
- // Subsequent lines are all individual transfer commands
- for (line = strtok_r(NULL, "\n", &linesave); line;
- line = strtok_r(NULL, "\n", &linesave)) {
-
- logcmd = strdup(line);
- params.cmdname = strtok_r(line, " ", &params.cpos);
-
- if (params.cmdname == NULL) {
- fprintf(stderr, "missing command [%s]\n", line);
- goto pbiudone;
- }
-
- cmdhash = HashString(params.cmdname);
- cmd = (const Command*) mzHashTableLookup(cmdht, cmdhash, params.cmdname,
- CompareCommandNames, false);
-
- if (cmd == NULL) {
- fprintf(stderr, "unexpected command [%s]\n", params.cmdname);
- goto pbiudone;
- }
-
- if (cmd->f != NULL && cmd->f(&params) == -1) {
- fprintf(stderr, "failed to execute command [%s]\n",
- logcmd ? logcmd : params.cmdname);
- goto pbiudone;
- }
-
- if (logcmd) {
- free(logcmd);
- logcmd = NULL;
- }
-
- if (params.canwrite) {
- fprintf(cmd_pipe, "set_progress %.4f\n", (double) params.written / total_blocks);
- fflush(cmd_pipe);
- }
- }
-
- if (params.canwrite) {
- pthread_join(params.thread, NULL);
-
- fprintf(stderr, "wrote %d blocks; expected %d\n", params.written, total_blocks);
- fprintf(stderr, "max alloc needed was %zu\n", params.bufsize);
-
- // Delete stash only after successfully completing the update, as it
- // may contain blocks needed to complete the update later.
- DeleteStash(params.stashbase);
- } else {
- fprintf(stderr, "verified partition contents; update may be resumed\n");
- }
-
- rc = 0;
-
-pbiudone:
- if (params.fd != -1) {
- if (fsync(params.fd) == -1) {
- fprintf(stderr, "fsync failed: %s\n", strerror(errno));
- }
- close(params.fd);
- }
-
- if (logcmd) {
- free(logcmd);
- }
-
- 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)) {
- DeleteStash(params.stashbase);
- }
-
- if (params.stashbase) {
- free(params.stashbase);
- }
-
- return StringValue(rc == 0 ? strdup("t") : strdup(""));
-}
-
-// 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.
-//
-// The creator of the transfer list will guarantee that no block
-// is read (ie, used as the source for a patch or move) after it
-// has been written.
-//
-// In version 2, the creator will guarantee that a given stash is
-// loaded (with a stash command) before it's used in a
-// move/bsdiff/imgdiff command.
-//
-// Within one command the source and target ranges may overlap so
-// in general we need to read the entire source into memory before
-// writing anything to the target blocks.
-//
-// All the patch data is concatenated into one patch_data file in
-// the update package. It must be stored uncompressed because we
-// memory-map it in directly from the archive. (Since patches are
-// already compressed, we lose very little by not compressing
-// their concatenation.)
-//
-// In version 3, commands that read data from the partition (i.e.
-// move/bsdiff/imgdiff/stash) have one or more additional hashes
-// before the range parameters, which are used to check if the
-// command has already been completed and verify the integrity of
-// the source data.
-
-Value* BlockImageVerifyFn(const char* name, State* state, int argc, Expr* argv[]) {
- // Commands which are not tested are set to NULL to skip them completely
- const Command commands[] = {
- { "bsdiff", PerformCommandDiff },
- { "erase", NULL },
- { "free", PerformCommandFree },
- { "imgdiff", PerformCommandDiff },
- { "move", PerformCommandMove },
- { "new", NULL },
- { "stash", PerformCommandStash },
- { "zero", NULL }
- };
-
- // Perform a dry run without writing to test if an update can proceed
- return PerformBlockImageUpdate(name, state, argc, argv, commands,
- sizeof(commands) / sizeof(commands[0]), 1);
-}
-
-Value* BlockImageUpdateFn(const char* name, State* state, int argc, Expr* argv[]) {
- const Command commands[] = {
- { "bsdiff", PerformCommandDiff },
- { "erase", PerformCommandErase },
- { "free", PerformCommandFree },
- { "imgdiff", PerformCommandDiff },
- { "move", PerformCommandMove },
- { "new", PerformCommandNew },
- { "stash", PerformCommandStash },
- { "zero", PerformCommandZero }
- };
-
- return PerformBlockImageUpdate(name, state, argc, argv, commands,
- sizeof(commands) / sizeof(commands[0]), 0);
-}
-
-Value* RangeSha1Fn(const char* name, State* state, int argc, Expr* argv[]) {
- Value* blockdev_filename;
- Value* ranges;
- const uint8_t* digest = NULL;
- if (ReadValueArgs(state, argv, 2, &blockdev_filename, &ranges) < 0) {
- return NULL;
- }
-
- if (blockdev_filename->type != VAL_STRING) {
- ErrorAbort(state, "blockdev_filename argument to %s must be string", name);
- goto done;
- }
- if (ranges->type != VAL_STRING) {
- ErrorAbort(state, "ranges argument to %s must be string", name);
- goto done;
- }
-
- int fd = open(blockdev_filename->data, O_RDWR);
- if (fd < 0) {
- ErrorAbort(state, "open \"%s\" failed: %s", blockdev_filename->data, strerror(errno));
- goto done;
- }
-
- RangeSet* rs = parse_range(ranges->data);
- uint8_t buffer[BLOCKSIZE];
-
- SHA_CTX ctx;
- SHA_init(&ctx);
-
- int i, j;
- for (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;
- }
-
- for (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 == NULL) {
- return StringValue(strdup(""));
- } else {
- return StringValue(PrintSha1(digest));
- }
-}
-
-void RegisterBlockImageFunctions() {
- RegisterFunction("block_image_verify", BlockImageVerifyFn);
- RegisterFunction("block_image_update", BlockImageUpdateFn);
- RegisterFunction("range_sha1", RangeSha1Fn);
-}
diff --git a/updater/blockimg.cpp b/updater/blockimg.cpp
new file mode 100644
index 000000000..a80180a9a
--- /dev/null
+++ b/updater/blockimg.cpp
@@ -0,0 +1,1918 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <ctype.h>
+#include <errno.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <linux/fs.h>
+#include <pthread.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/ioctl.h>
+#include <time.h>
+#include <unistd.h>
+#include <fec/io.h>
+
+#include <map>
+#include <memory>
+#include <string>
+#include <vector>
+
+#include <android-base/parseint.h>
+#include <android-base/strings.h>
+
+#include "applypatch/applypatch.h"
+#include "edify/expr.h"
+#include "error_code.h"
+#include "install.h"
+#include "openssl/sha.h"
+#include "minzip/Hash.h"
+#include "ota_io.h"
+#include "print_sha1.h"
+#include "unique_fd.h"
+#include "updater.h"
+
+#define BLOCKSIZE 4096
+
+// Set this to 0 to interpret 'erase' transfers to mean do a
+// BLKDISCARD ioctl (the normal behavior). Set to 1 to interpret
+// erase to mean fill the region with zeroes.
+#define DEBUG_ERASE 0
+
+#define STASH_DIRECTORY_BASE "/cache/recovery"
+#define STASH_DIRECTORY_MODE 0700
+#define STASH_FILE_MODE 0600
+
+struct RangeSet {
+ size_t count; // Limit is INT_MAX.
+ size_t size;
+ std::vector<size_t> pos; // Actual limit is INT_MAX.
+};
+
+static CauseCode failure_type = kNoCause;
+static bool is_retry = false;
+static std::map<std::string, RangeSet> stash_map;
+
+static void parse_range(const std::string& range_text, RangeSet& rs) {
+
+ std::vector<std::string> pieces = android::base::Split(range_text, ",");
+ if (pieces.size() < 3) {
+ goto err;
+ }
+
+ size_t num;
+ if (!android::base::ParseUint(pieces[0].c_str(), &num, static_cast<size_t>(INT_MAX))) {
+ goto err;
+ }
+
+ if (num == 0 || num % 2) {
+ goto err; // must be even
+ } else if (num != pieces.size() - 1) {
+ goto err;
+ }
+
+ rs.pos.resize(num);
+ rs.count = num / 2;
+ rs.size = 0;
+
+ for (size_t i = 0; i < num; i += 2) {
+ if (!android::base::ParseUint(pieces[i+1].c_str(), &rs.pos[i],
+ static_cast<size_t>(INT_MAX))) {
+ goto err;
+ }
+
+ if (!android::base::ParseUint(pieces[i+2].c_str(), &rs.pos[i+1],
+ static_cast<size_t>(INT_MAX))) {
+ goto err;
+ }
+
+ if (rs.pos[i] >= rs.pos[i+1]) {
+ goto err; // empty or negative range
+ }
+
+ size_t sz = rs.pos[i+1] - rs.pos[i];
+ if (rs.size > SIZE_MAX - sz) {
+ goto err; // overflow
+ }
+
+ rs.size += sz;
+ }
+
+ return;
+
+err:
+ fprintf(stderr, "failed to parse range '%s'\n", range_text.c_str());
+ exit(1);
+}
+
+static bool range_overlaps(const RangeSet& r1, const RangeSet& r2) {
+ for (size_t i = 0; i < r1.count; ++i) {
+ size_t r1_0 = r1.pos[i * 2];
+ size_t r1_1 = r1.pos[i * 2 + 1];
+
+ for (size_t j = 0; j < r2.count; ++j) {
+ size_t r2_0 = r2.pos[j * 2];
+ size_t r2_1 = r2.pos[j * 2 + 1];
+
+ if (!(r2_0 >= r1_1 || r1_0 >= r2_1)) {
+ return true;
+ }
+ }
+ }
+
+ return false;
+}
+
+static int read_all(int fd, uint8_t* data, size_t size) {
+ size_t so_far = 0;
+ while (so_far < size) {
+ ssize_t r = TEMP_FAILURE_RETRY(ota_read(fd, data+so_far, size-so_far));
+ if (r == -1) {
+ failure_type = kFreadFailure;
+ fprintf(stderr, "read failed: %s\n", strerror(errno));
+ return -1;
+ }
+ so_far += r;
+ }
+ 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) {
+ ssize_t w = TEMP_FAILURE_RETRY(ota_write(fd, data+written, size-written));
+ if (w == -1) {
+ failure_type = kFwriteFailure;
+ fprintf(stderr, "write failed: %s\n", strerror(errno));
+ return -1;
+ }
+ written += w;
+ }
+
+ 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 discard_blocks(int fd, off64_t offset, uint64_t size) {
+ // Don't discard blocks unless the update is a retry run.
+ if (!is_retry) {
+ return true;
+ }
+
+ uint64_t args[2] = {static_cast<uint64_t>(offset), size};
+ int status = ioctl(fd, BLKDISCARD, &args);
+ if (status == -1) {
+ fprintf(stderr, "BLKDISCARD ioctl failed: %s\n", strerror(errno));
+ return false;
+ }
+ return true;
+}
+
+static bool check_lseek(int fd, off64_t offset, int whence) {
+ off64_t rc = TEMP_FAILURE_RETRY(lseek64(fd, offset, whence));
+ if (rc == -1) {
+ failure_type = kLseekFailure;
+ fprintf(stderr, "lseek64 failed: %s\n", strerror(errno));
+ return false;
+ }
+ return true;
+}
+
+static void allocate(size_t size, std::vector<uint8_t>& buffer) {
+ // if the buffer's big enough, reuse it.
+ if (size <= buffer.size()) return;
+
+ buffer.resize(size);
+}
+
+struct RangeSinkState {
+ RangeSinkState(RangeSet& rs) : tgt(rs) { };
+
+ int fd;
+ const RangeSet& tgt;
+ size_t p_block;
+ size_t p_remain;
+};
+
+static ssize_t RangeSinkWrite(const uint8_t* data, ssize_t size, void* token) {
+ RangeSinkState* rss = reinterpret_cast<RangeSinkState*>(token);
+
+ if (rss->p_remain == 0) {
+ fprintf(stderr, "range sink write overrun");
+ return 0;
+ }
+
+ ssize_t written = 0;
+ while (size > 0) {
+ size_t write_now = size;
+
+ if (rss->p_remain < write_now) {
+ write_now = rss->p_remain;
+ }
+
+ if (write_all(rss->fd, data, write_now) == -1) {
+ break;
+ }
+
+ data += write_now;
+ size -= write_now;
+
+ rss->p_remain -= write_now;
+ written += write_now;
+
+ if (rss->p_remain == 0) {
+ // move to the next block
+ ++rss->p_block;
+ if (rss->p_block < rss->tgt.count) {
+ rss->p_remain = (rss->tgt.pos[rss->p_block * 2 + 1] -
+ rss->tgt.pos[rss->p_block * 2]) * BLOCKSIZE;
+
+ off64_t offset = static_cast<off64_t>(rss->tgt.pos[rss->p_block*2]) * BLOCKSIZE;
+ if (!discard_blocks(rss->fd, offset, rss->p_remain)) {
+ break;
+ }
+
+ if (!check_lseek(rss->fd, offset, SEEK_SET)) {
+ break;
+ }
+
+ } else {
+ // we can't write any more; return how many bytes have
+ // been written so far.
+ break;
+ }
+ }
+ }
+
+ return written;
+}
+
+// All of the data for all the 'new' transfers is contained in one
+// file in the update package, concatenated together in the order in
+// which transfers.list will need it. We want to stream it out of the
+// archive (it's compressed) without writing it to a temp file, but we
+// can't write each section until it's that transfer's turn to go.
+//
+// To achieve this, we expand the new data from the archive in a
+// background thread, and block that threads 'receive uncompressed
+// data' function until the main thread has reached a point where we
+// want some new data to be written. We signal the background thread
+// with the destination for the data and block the main thread,
+// waiting for the background thread to complete writing that section.
+// Then it signals the main thread to wake up and goes back to
+// blocking waiting for a transfer.
+//
+// NewThreadInfo is the struct used to pass information back and forth
+// between the two threads. When the main thread wants some data
+// written, it sets rss to the destination location and signals the
+// condition. When the background thread is done writing, it clears
+// rss and signals the condition again.
+
+struct NewThreadInfo {
+ ZipArchive* za;
+ const ZipEntry* entry;
+
+ RangeSinkState* rss;
+
+ pthread_mutex_t mu;
+ pthread_cond_t cv;
+};
+
+static bool receive_new_data(const unsigned char* data, int size, void* cookie) {
+ NewThreadInfo* nti = reinterpret_cast<NewThreadInfo*>(cookie);
+
+ while (size > 0) {
+ // Wait for nti->rss to be non-null, indicating some of this
+ // data is wanted.
+ pthread_mutex_lock(&nti->mu);
+ while (nti->rss == nullptr) {
+ pthread_cond_wait(&nti->cv, &nti->mu);
+ }
+ pthread_mutex_unlock(&nti->mu);
+
+ // At this point nti->rss is set, and we own it. The main
+ // thread is waiting for it to disappear from nti.
+ ssize_t written = RangeSinkWrite(data, size, nti->rss);
+ data += written;
+ size -= written;
+
+ if (nti->rss->p_block == nti->rss->tgt.count) {
+ // we have written all the bytes desired by this rss.
+
+ pthread_mutex_lock(&nti->mu);
+ nti->rss = nullptr;
+ pthread_cond_broadcast(&nti->cv);
+ pthread_mutex_unlock(&nti->mu);
+ }
+ }
+
+ return true;
+}
+
+static void* unzip_new_data(void* cookie) {
+ NewThreadInfo* nti = (NewThreadInfo*) cookie;
+ mzProcessZipEntryContents(nti->za, nti->entry, receive_new_data, nti);
+ return nullptr;
+}
+
+static int ReadBlocks(const RangeSet& src, std::vector<uint8_t>& buffer, int fd) {
+ size_t p = 0;
+ 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)) {
+ return -1;
+ }
+
+ size_t size = (src.pos[i * 2 + 1] - src.pos[i * 2]) * BLOCKSIZE;
+
+ if (read_all(fd, data + p, size) == -1) {
+ return -1;
+ }
+
+ p += size;
+ }
+
+ return 0;
+}
+
+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) {
+ off64_t offset = static_cast<off64_t>(tgt.pos[i * 2]) * BLOCKSIZE;
+ size_t size = (tgt.pos[i * 2 + 1] - tgt.pos[i * 2]) * BLOCKSIZE;
+ if (!discard_blocks(fd, offset, size)) {
+ return -1;
+ }
+
+ if (!check_lseek(fd, offset, SEEK_SET)) {
+ return -1;
+ }
+
+ if (write_all(fd, data + p, size) == -1) {
+ return -1;
+ }
+
+ p += size;
+ }
+
+ return 0;
+}
+
+// Parameters for transfer list command functions
+struct CommandParameters {
+ std::vector<std::string> tokens;
+ size_t cpos;
+ const char* cmdname;
+ const char* cmdline;
+ std::string freestash;
+ std::string stashbase;
+ bool canwrite;
+ int createdstash;
+ int fd;
+ bool foundwrites;
+ bool isunresumable;
+ int version;
+ size_t written;
+ size_t stashed;
+ NewThreadInfo nti;
+ pthread_t thread;
+ std::vector<uint8_t> buffer;
+ 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()) {
+ fprintf(stderr, "invalid parameters\n");
+ return -1;
+ }
+
+ // <src_range>
+ RangeSet src;
+ parse_range(params.tokens[params.cpos++], src);
+
+ // <tgt_range>
+ parse_range(params.tokens[params.cpos++], tgt);
+
+ 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 std::vector<uint8_t>& buffer,
+ const size_t blocks, bool printerror) {
+ uint8_t digest[SHA_DIGEST_LENGTH];
+ const uint8_t* data = buffer.data();
+
+ SHA1(data, blocks * BLOCKSIZE, digest);
+
+ std::string hexdigest = print_sha1(digest);
+
+ if (hexdigest != expected) {
+ if (printerror) {
+ fprintf(stderr, "failed to verify blocks (expected %s, read %s)\n",
+ expected.c_str(), hexdigest.c_str());
+ }
+ return -1;
+ }
+
+ return 0;
+}
+
+static std::string GetStashFileName(const std::string& base, const std::string& id,
+ const std::string& postfix) {
+ if (base.empty()) {
+ return "";
+ }
+
+ std::string fn(STASH_DIRECTORY_BASE);
+ fn += "/" + base + "/" + id + postfix;
+
+ return fn;
+}
+
+typedef void (*StashCallback)(const std::string&, void*);
+
+// Does a best effort enumeration of stash files. Ignores possible non-file
+// items in the stash directory and continues despite of errors. Calls the
+// 'callback' function for each file and passes 'data' to the function as a
+// parameter.
+
+static void EnumerateStash(const std::string& dirname, StashCallback callback, void* data) {
+ if (dirname.empty() || callback == nullptr) {
+ return;
+ }
+
+ std::unique_ptr<DIR, int(*)(DIR*)> directory(opendir(dirname.c_str()), closedir);
+
+ if (directory == nullptr) {
+ if (errno != ENOENT) {
+ fprintf(stderr, "opendir \"%s\" failed: %s\n", dirname.c_str(), strerror(errno));
+ }
+ return;
+ }
+
+ struct dirent* item;
+ while ((item = readdir(directory.get())) != nullptr) {
+ if (item->d_type != DT_REG) {
+ continue;
+ }
+
+ std::string fn = dirname + "/" + std::string(item->d_name);
+ callback(fn, data);
+ }
+}
+
+static void UpdateFileSize(const std::string& fn, void* data) {
+ if (fn.empty() || !data) {
+ return;
+ }
+
+ struct stat sb;
+ if (stat(fn.c_str(), &sb) == -1) {
+ fprintf(stderr, "stat \"%s\" failed: %s\n", fn.c_str(), strerror(errno));
+ return;
+ }
+
+ int* size = reinterpret_cast<int*>(data);
+ *size += sb.st_size;
+}
+
+// Deletes the stash directory and all files in it. Assumes that it only
+// contains files. There is nothing we can do about unlikely, but possible
+// errors, so they are merely logged.
+
+static void DeleteFile(const std::string& fn, void* /* data */) {
+ if (!fn.empty()) {
+ fprintf(stderr, "deleting %s\n", fn.c_str());
+
+ if (unlink(fn.c_str()) == -1 && errno != ENOENT) {
+ fprintf(stderr, "unlink \"%s\" failed: %s\n", fn.c_str(), strerror(errno));
+ }
+ }
+}
+
+static void DeletePartial(const std::string& fn, void* data) {
+ if (android::base::EndsWith(fn, ".partial")) {
+ DeleteFile(fn, data);
+ }
+}
+
+static void DeleteStash(const std::string& base) {
+ if (base.empty()) {
+ return;
+ }
+
+ fprintf(stderr, "deleting stash %s\n", base.c_str());
+
+ std::string dirname = GetStashFileName(base, "", "");
+ EnumerateStash(dirname, DeleteFile, nullptr);
+
+ if (rmdir(dirname.c_str()) == -1) {
+ if (errno != ENOENT && errno != ENOTDIR) {
+ fprintf(stderr, "rmdir \"%s\" failed: %s\n", dirname.c_str(), strerror(errno));
+ }
+ }
+}
+
+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) {
+ // 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.
+ if (!params.canwrite) {
+ if (stash_map.find(id) != stash_map.end()) {
+ const RangeSet& src = stash_map[id];
+ allocate(src.size * BLOCKSIZE, buffer);
+
+ if (ReadBlocks(src, buffer, params.fd) == -1) {
+ fprintf(stderr, "failed to read source blocks in stash map.\n");
+ return -1;
+ }
+ if (VerifyBlocks(id, buffer, src.size, true) != 0) {
+ fprintf(stderr, "failed to verify loaded source blocks in stash map.\n");
+ return -1;
+ }
+ return 0;
+ }
+ }
+
+ if (base.empty()) {
+ return -1;
+ }
+
+ size_t blockcount = 0;
+
+ if (!blocks) {
+ blocks = &blockcount;
+ }
+
+ std::string fn = GetStashFileName(base, id, "");
+
+ struct stat sb;
+ int res = stat(fn.c_str(), &sb);
+
+ if (res == -1) {
+ if (errno != ENOENT || printnoent) {
+ fprintf(stderr, "stat \"%s\" failed: %s\n", fn.c_str(), strerror(errno));
+ }
+ return -1;
+ }
+
+ fprintf(stderr, " loading %s\n", fn.c_str());
+
+ if ((sb.st_size % BLOCKSIZE) != 0) {
+ fprintf(stderr, "%s size %" PRId64 " not multiple of block size %d",
+ fn.c_str(), static_cast<int64_t>(sb.st_size), BLOCKSIZE);
+ return -1;
+ }
+
+ int fd = TEMP_FAILURE_RETRY(open(fn.c_str(), O_RDONLY));
+ unique_fd fd_holder(fd);
+
+ if (fd == -1) {
+ fprintf(stderr, "open \"%s\" failed: %s\n", fn.c_str(), strerror(errno));
+ return -1;
+ }
+
+ allocate(sb.st_size, buffer);
+
+ if (read_all(fd, buffer, sb.st_size) == -1) {
+ return -1;
+ }
+
+ *blocks = sb.st_size / BLOCKSIZE;
+
+ if (verify && VerifyBlocks(id, buffer, *blocks, true) != 0) {
+ fprintf(stderr, "unexpected contents in %s\n", fn.c_str());
+ DeleteFile(fn, nullptr);
+ return -1;
+ }
+
+ return 0;
+}
+
+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;
+ }
+
+ if (checkspace && CacheSizeCheck(blocks * BLOCKSIZE) != 0) {
+ fprintf(stderr, "not enough space to write stash\n");
+ return -1;
+ }
+
+ std::string fn = GetStashFileName(base, id, ".partial");
+ std::string cn = GetStashFileName(base, id, "");
+
+ if (exists) {
+ struct stat sb;
+ int res = stat(cn.c_str(), &sb);
+
+ if (res == 0) {
+ // The file already exists and since the name is the hash of the contents,
+ // it's safe to assume the contents are identical (accidental hash collisions
+ // are unlikely)
+ fprintf(stderr, " skipping %d existing blocks in %s\n", blocks, cn.c_str());
+ *exists = true;
+ return 0;
+ }
+
+ *exists = false;
+ }
+
+ fprintf(stderr, " writing %d blocks to %s\n", blocks, cn.c_str());
+
+ int fd = TEMP_FAILURE_RETRY(open(fn.c_str(), O_WRONLY | O_CREAT | O_TRUNC, STASH_FILE_MODE));
+ unique_fd fd_holder(fd);
+
+ if (fd == -1) {
+ fprintf(stderr, "failed to create \"%s\": %s\n", fn.c_str(), strerror(errno));
+ return -1;
+ }
+
+ if (write_all(fd, buffer, blocks * BLOCKSIZE) == -1) {
+ return -1;
+ }
+
+ if (ota_fsync(fd) == -1) {
+ failure_type = kFsyncFailure;
+ fprintf(stderr, "fsync \"%s\" failed: %s\n", fn.c_str(), strerror(errno));
+ return -1;
+ }
+
+ if (rename(fn.c_str(), cn.c_str()) == -1) {
+ fprintf(stderr, "rename(\"%s\", \"%s\") failed: %s\n", fn.c_str(), cn.c_str(),
+ strerror(errno));
+ return -1;
+ }
+
+ std::string dname = GetStashFileName(base, "", "");
+ int dfd = TEMP_FAILURE_RETRY(open(dname.c_str(), O_RDONLY | O_DIRECTORY));
+ unique_fd dfd_holder(dfd);
+
+ if (dfd == -1) {
+ failure_type = kFileOpenFailure;
+ fprintf(stderr, "failed to open \"%s\" failed: %s\n", dname.c_str(), strerror(errno));
+ return -1;
+ }
+
+ if (ota_fsync(dfd) == -1) {
+ failure_type = kFsyncFailure;
+ fprintf(stderr, "fsync \"%s\" failed: %s\n", dname.c_str(), strerror(errno));
+ return -1;
+ }
+
+ return 0;
+}
+
+// Creates a directory for storing stash files and checks if the /cache partition
+// hash enough space for the expected amount of blocks we need to store. Returns
+// >0 if we created the directory, zero if it existed already, and <0 of failure.
+
+static int CreateStash(State* state, int maxblocks, const char* blockdev, std::string& base) {
+ if (blockdev == nullptr) {
+ return -1;
+ }
+
+ // Stash directory should be different for each partition to avoid conflicts
+ // when updating multiple partitions at the same time, so we use the hash of
+ // the block device name as the base directory
+ uint8_t digest[SHA_DIGEST_LENGTH];
+ SHA1(reinterpret_cast<const uint8_t*>(blockdev), strlen(blockdev), digest);
+ base = print_sha1(digest);
+
+ std::string dirname = GetStashFileName(base, "", "");
+ struct stat sb;
+ int res = stat(dirname.c_str(), &sb);
+
+ if (res == -1 && errno != ENOENT) {
+ ErrorAbort(state, kStashCreationFailure, "stat \"%s\" failed: %s\n",
+ dirname.c_str(), strerror(errno));
+ return -1;
+ } else if (res != 0) {
+ fprintf(stderr, "creating stash %s\n", dirname.c_str());
+ res = mkdir(dirname.c_str(), STASH_DIRECTORY_MODE);
+
+ if (res != 0) {
+ ErrorAbort(state, kStashCreationFailure, "mkdir \"%s\" failed: %s\n",
+ dirname.c_str(), strerror(errno));
+ return -1;
+ }
+
+ if (CacheSizeCheck(maxblocks * BLOCKSIZE) != 0) {
+ ErrorAbort(state, kStashCreationFailure, "not enough space for stash\n");
+ return -1;
+ }
+
+ return 1; // Created directory
+ }
+
+ fprintf(stderr, "using existing stash %s\n", dirname.c_str());
+
+ // If the directory already exists, calculate the space already allocated to
+ // stash files and check if there's enough for all required blocks. Delete any
+ // partially completed stash files first.
+
+ EnumerateStash(dirname, DeletePartial, nullptr);
+ int size = 0;
+ EnumerateStash(dirname, UpdateFileSize, &size);
+
+ size = maxblocks * BLOCKSIZE - size;
+
+ if (size > 0 && CacheSizeCheck(size) != 0) {
+ ErrorAbort(state, kStashCreationFailure, "not enough space for stash (%d more needed)\n",
+ size);
+ return -1;
+ }
+
+ return 0; // Using existing directory
+}
+
+static int SaveStash(CommandParameters& params, const std::string& base,
+ std::vector<uint8_t>& buffer, int fd, bool usehash) {
+
+ // <stash_id> <src_range>
+ if (params.cpos + 1 >= params.tokens.size()) {
+ fprintf(stderr, "missing id and/or src range fields in stash command\n");
+ return -1;
+ }
+ 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++], src);
+
+ allocate(src.size * BLOCKSIZE, buffer);
+ if (ReadBlocks(src, buffer, fd) == -1) {
+ return -1;
+ }
+ blocks = src.size;
+
+ if (usehash && VerifyBlocks(id, buffer, blocks, true) != 0) {
+ // Source blocks have unexpected contents. If we actually need this
+ // data later, this is an unrecoverable error. However, the command
+ // that uses the data may have already completed previously, so the
+ // possible failure will occur during source block verification.
+ fprintf(stderr, "failed to load source blocks for stash %s\n", id.c_str());
+ return 0;
+ }
+
+ // In verify mode, save source range_set instead of stashing blocks.
+ if (!params.canwrite && usehash) {
+ stash_map[id] = src;
+ return 0;
+ }
+
+ fprintf(stderr, "stashing %zu blocks to %s\n", blocks, id.c_str());
+ 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;
+ }
+
+ std::string fn = GetStashFileName(base, id, "");
+ DeleteFile(fn, nullptr);
+
+ return 0;
+}
+
+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
+ // 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(to + (locs.pos[i*2] * BLOCKSIZE), from + (start * BLOCKSIZE),
+ blocks * BLOCKSIZE);
+ }
+}
+
+// Do a source/target load for move/bsdiff/imgdiff in version 2.
+// 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)
+//
+// 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.
+
+static int LoadSrcTgtVersion2(CommandParameters& params, RangeSet& tgt, size_t& src_blocks,
+ std::vector<uint8_t>& buffer, int fd, const std::string& stashbase, bool* overlap) {
+
+ // At least it needs to provide three parameters: <tgt_range>,
+ // <src_block_count> and "-"/<src_range>.
+ if (params.cpos + 2 >= params.tokens.size()) {
+ fprintf(stderr, "invalid parameters\n");
+ return -1;
+ }
+
+ // <tgt_range>
+ parse_range(params.tokens[params.cpos++], tgt);
+
+ // <src_block_count>
+ const std::string& token = params.tokens[params.cpos++];
+ if (!android::base::ParseUint(token.c_str(), &src_blocks)) {
+ fprintf(stderr, "invalid src_block_count \"%s\"\n", token.c_str());
+ return -1;
+ }
+
+ allocate(src_blocks * BLOCKSIZE, buffer);
+
+ // "-" or <src_range> [<src_loc>]
+ if (params.tokens[params.cpos] == "-") {
+ // no source ranges, only stashes
+ params.cpos++;
+ } else {
+ RangeSet src;
+ parse_range(params.tokens[params.cpos++], src);
+ int res = ReadBlocks(src, buffer, fd);
+
+ if (overlap) {
+ *overlap = range_overlaps(src, tgt);
+ }
+
+ if (res == -1) {
+ return -1;
+ }
+
+ if (params.cpos >= params.tokens.size()) {
+ // no stashes, only source range
+ return 0;
+ }
+
+ RangeSet locs;
+ parse_range(params.tokens[params.cpos++], locs);
+ MoveRange(buffer, locs, buffer);
+ }
+
+ // <[stash_id:stash_range]>
+ while (params.cpos < params.tokens.size()) {
+ // 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.
+ std::vector<std::string> tokens = android::base::Split(params.tokens[params.cpos++], ":");
+ if (tokens.size() != 2) {
+ fprintf(stderr, "invalid parameter\n");
+ return -1;
+ }
+
+ std::vector<uint8_t> stash;
+ int res = LoadStash(params, stashbase, tokens[0], false, nullptr, stash, true);
+
+ if (res == -1) {
+ // These source blocks will fail verification if used later, but we
+ // will let the caller decide if this is a fatal failure
+ fprintf(stderr, "failed to load stash %s\n", tokens[0].c_str());
+ continue;
+ }
+
+ RangeSet locs;
+ parse_range(tokens[1], locs);
+
+ MoveRange(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.
+
+static int LoadSrcTgtVersion3(CommandParameters& params, RangeSet& tgt, size_t& src_blocks,
+ bool onehash, bool& overlap) {
+
+ if (params.cpos >= params.tokens.size()) {
+ fprintf(stderr, "missing source hash\n");
+ return -1;
+ }
+
+ std::string srchash = params.tokens[params.cpos++];
+ std::string tgthash;
+
+ if (onehash) {
+ tgthash = srchash;
+ } else {
+ if (params.cpos >= params.tokens.size()) {
+ fprintf(stderr, "missing target hash\n");
+ return -1;
+ }
+ tgthash = params.tokens[params.cpos++];
+ }
+
+ if (LoadSrcTgtVersion2(params, 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, params.fd) == -1) {
+ return -1;
+ }
+
+ if (VerifyBlocks(tgthash, tgtbuffer, tgt.size, false) == 0) {
+ // Target blocks already have expected content, command should be skipped
+ return 1;
+ }
+
+ if (VerifyBlocks(srchash, params.buffer, src_blocks, true) == 0) {
+ // If source and target blocks overlap, stash the source blocks so we can
+ // resume from possible write errors. In verify mode, we can skip stashing
+ // because the source blocks won't be overwritten.
+ if (overlap && params.canwrite) {
+ fprintf(stderr, "stashing %zu overlapping blocks to %s\n", src_blocks,
+ srchash.c_str());
+
+ bool stash_exists = false;
+ if (WriteStash(params.stashbase, srchash, src_blocks, params.buffer, true,
+ &stash_exists) != 0) {
+ fprintf(stderr, "failed to stash overlapping source blocks\n");
+ return -1;
+ }
+
+ params.stashed += src_blocks;
+ // Can be deleted when the write has completed
+ if (!stash_exists) {
+ params.freestash = srchash;
+ }
+ }
+
+ // Source blocks have expected content, command can proceed
+ return 0;
+ }
+
+ if (overlap && LoadStash(params, 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.
+ return 0;
+ }
+
+ // Valid source data not available, update cannot be resumed
+ fprintf(stderr, "partition has unexpected contents\n");
+ params.isunresumable = true;
+
+ return -1;
+}
+
+static int PerformCommandMove(CommandParameters& params) {
+ size_t blocks = 0;
+ bool overlap = false;
+ int status = 0;
+ RangeSet tgt;
+
+ 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) {
+ fprintf(stderr, "failed to read blocks for move\n");
+ return -1;
+ }
+
+ if (status == 0) {
+ params.foundwrites = true;
+ } else if (params.foundwrites) {
+ fprintf(stderr, "warning: commands executed out of order [%s]\n", params.cmdname);
+ }
+
+ if (params.canwrite) {
+ if (status == 0) {
+ fprintf(stderr, " moving %zu blocks\n", blocks);
+
+ if (WriteBlocks(tgt, params.buffer, params.fd) == -1) {
+ return -1;
+ }
+ } else {
+ fprintf(stderr, "skipping %zu already moved blocks\n", blocks);
+ }
+
+ }
+
+ if (!params.freestash.empty()) {
+ FreeStash(params.stashbase, params.freestash);
+ params.freestash.clear();
+ }
+
+ params.written += tgt.size;
+
+ return 0;
+}
+
+static int PerformCommandStash(CommandParameters& params) {
+ return SaveStash(params, params.stashbase, params.buffer, params.fd,
+ (params.version >= 3));
+}
+
+static int PerformCommandFree(CommandParameters& params) {
+ // <stash_id>
+ if (params.cpos >= params.tokens.size()) {
+ fprintf(stderr, "missing stash id in free command\n");
+ return -1;
+ }
+
+ const std::string& id = params.tokens[params.cpos++];
+
+ if (!params.canwrite && stash_map.find(id) != stash_map.end()) {
+ stash_map.erase(id);
+ return 0;
+ }
+
+ if (params.createdstash || params.canwrite) {
+ return FreeStash(params.stashbase, id);
+ }
+
+ return 0;
+}
+
+static int PerformCommandZero(CommandParameters& params) {
+
+ if (params.cpos >= params.tokens.size()) {
+ fprintf(stderr, "missing target blocks for zero\n");
+ return -1;
+ }
+
+ RangeSet tgt;
+ parse_range(params.tokens[params.cpos++], tgt);
+
+ fprintf(stderr, " zeroing %zu blocks\n", tgt.size);
+
+ allocate(BLOCKSIZE, params.buffer);
+ memset(params.buffer.data(), 0, BLOCKSIZE);
+
+ if (params.canwrite) {
+ for (size_t i = 0; i < tgt.count; ++i) {
+ off64_t offset = static_cast<off64_t>(tgt.pos[i * 2]) * BLOCKSIZE;
+ size_t size = (tgt.pos[i * 2 + 1] - tgt.pos[i * 2]) * BLOCKSIZE;
+ if (!discard_blocks(params.fd, offset, size)) {
+ return -1;
+ }
+
+ if (!check_lseek(params.fd, offset, SEEK_SET)) {
+ return -1;
+ }
+
+ for (size_t j = tgt.pos[i * 2]; j < tgt.pos[i * 2 + 1]; ++j) {
+ if (write_all(params.fd, params.buffer, BLOCKSIZE) == -1) {
+ return -1;
+ }
+ }
+ }
+ }
+
+ if (params.cmdname[0] == 'z') {
+ // Update only for the zero command, as the erase command will call
+ // this if DEBUG_ERASE is defined.
+ params.written += tgt.size;
+ }
+
+ return 0;
+}
+
+static int PerformCommandNew(CommandParameters& params) {
+
+ if (params.cpos >= params.tokens.size()) {
+ fprintf(stderr, "missing target blocks for new\n");
+ return -1;
+ }
+
+ RangeSet tgt;
+ parse_range(params.tokens[params.cpos++], tgt);
+
+ if (params.canwrite) {
+ fprintf(stderr, " writing %zu blocks of new data\n", tgt.size);
+
+ RangeSinkState rss(tgt);
+ rss.fd = params.fd;
+ rss.p_block = 0;
+ rss.p_remain = (tgt.pos[1] - tgt.pos[0]) * BLOCKSIZE;
+
+ off64_t offset = static_cast<off64_t>(tgt.pos[0]) * BLOCKSIZE;
+ if (!discard_blocks(params.fd, offset, tgt.size * BLOCKSIZE)) {
+ return -1;
+ }
+
+ if (!check_lseek(params.fd, offset, SEEK_SET)) {
+ return -1;
+ }
+
+ pthread_mutex_lock(&params.nti.mu);
+ params.nti.rss = &rss;
+ pthread_cond_broadcast(&params.nti.cv);
+
+ while (params.nti.rss) {
+ pthread_cond_wait(&params.nti.cv, &params.nti.mu);
+ }
+
+ pthread_mutex_unlock(&params.nti.mu);
+ }
+
+ params.written += tgt.size;
+
+ return 0;
+}
+
+static int PerformCommandDiff(CommandParameters& params) {
+
+ // <offset> <length>
+ if (params.cpos + 1 >= params.tokens.size()) {
+ fprintf(stderr, "missing patch offset or length for %s\n", params.cmdname);
+ return -1;
+ }
+
+ size_t offset;
+ if (!android::base::ParseUint(params.tokens[params.cpos++].c_str(), &offset)) {
+ fprintf(stderr, "invalid patch offset\n");
+ return -1;
+ }
+
+ size_t len;
+ if (!android::base::ParseUint(params.tokens[params.cpos++].c_str(), &len)) {
+ fprintf(stderr, "invalid patch offset\n");
+ return -1;
+ }
+
+ RangeSet tgt;
+ size_t blocks = 0;
+ bool overlap = false;
+ int status = 0;
+ if (params.version == 1) {
+ status = LoadSrcTgtVersion1(params, tgt, blocks, params.buffer, params.fd);
+ } else if (params.version == 2) {
+ status = LoadSrcTgtVersion2(params, tgt, blocks, params.buffer, params.fd,
+ params.stashbase, nullptr);
+ } else if (params.version >= 3) {
+ status = LoadSrcTgtVersion3(params, tgt, blocks, false, overlap);
+ }
+
+ if (status == -1) {
+ fprintf(stderr, "failed to read blocks for diff\n");
+ return -1;
+ }
+
+ if (status == 0) {
+ params.foundwrites = true;
+ } else if (params.foundwrites) {
+ fprintf(stderr, "warning: commands executed out of order [%s]\n", params.cmdname);
+ }
+
+ if (params.canwrite) {
+ if (status == 0) {
+ fprintf(stderr, "patching %zu blocks to %zu\n", blocks, tgt.size);
+
+ Value patch_value;
+ patch_value.type = VAL_BLOB;
+ patch_value.size = len;
+ patch_value.data = (char*) (params.patch_start + offset);
+
+ RangeSinkState rss(tgt);
+ rss.fd = params.fd;
+ rss.p_block = 0;
+ rss.p_remain = (tgt.pos[1] - tgt.pos[0]) * BLOCKSIZE;
+
+ off64_t offset = static_cast<off64_t>(tgt.pos[0]) * BLOCKSIZE;
+ if (!discard_blocks(params.fd, offset, rss.p_remain)) {
+ return -1;
+ }
+
+ if (!check_lseek(params.fd, offset, SEEK_SET)) {
+ return -1;
+ }
+
+ if (params.cmdname[0] == 'i') { // imgdiff
+ if (ApplyImagePatch(params.buffer.data(), blocks * BLOCKSIZE, &patch_value,
+ &RangeSinkWrite, &rss, nullptr, nullptr) != 0) {
+ fprintf(stderr, "Failed to apply image patch.\n");
+ return -1;
+ }
+ } else {
+ if (ApplyBSDiffPatch(params.buffer.data(), blocks * BLOCKSIZE, &patch_value,
+ 0, &RangeSinkWrite, &rss, nullptr) != 0) {
+ fprintf(stderr, "Failed to apply bsdiff patch.\n");
+ return -1;
+ }
+ }
+
+ // We expect the output of the patcher to fill the tgt ranges exactly.
+ if (rss.p_block != tgt.count || rss.p_remain != 0) {
+ fprintf(stderr, "range sink underrun?\n");
+ }
+ } else {
+ fprintf(stderr, "skipping %zu blocks already patched to %zu [%s]\n",
+ blocks, tgt.size, params.cmdline);
+ }
+ }
+
+ if (!params.freestash.empty()) {
+ FreeStash(params.stashbase, params.freestash);
+ params.freestash.clear();
+ }
+
+ params.written += tgt.size;
+
+ return 0;
+}
+
+static int PerformCommandErase(CommandParameters& params) {
+ if (DEBUG_ERASE) {
+ return PerformCommandZero(params);
+ }
+
+ struct stat sb;
+ if (fstat(params.fd, &sb) == -1) {
+ fprintf(stderr, "failed to fstat device to erase: %s\n", strerror(errno));
+ return -1;
+ }
+
+ if (!S_ISBLK(sb.st_mode)) {
+ fprintf(stderr, "not a block device; skipping erase\n");
+ return -1;
+ }
+
+ if (params.cpos >= params.tokens.size()) {
+ fprintf(stderr, "missing target blocks for erase\n");
+ return -1;
+ }
+
+ RangeSet tgt;
+ parse_range(params.tokens[params.cpos++], tgt);
+
+ if (params.canwrite) {
+ fprintf(stderr, " erasing %zu blocks\n", tgt.size);
+
+ for (size_t i = 0; i < tgt.count; ++i) {
+ uint64_t blocks[2];
+ // offset in bytes
+ blocks[0] = tgt.pos[i * 2] * (uint64_t) BLOCKSIZE;
+ // length in bytes
+ blocks[1] = (tgt.pos[i * 2 + 1] - tgt.pos[i * 2]) * (uint64_t) BLOCKSIZE;
+
+ if (ioctl(params.fd, BLKDISCARD, &blocks) == -1) {
+ fprintf(stderr, "BLKDISCARD ioctl failed: %s\n", strerror(errno));
+ return -1;
+ }
+ }
+ }
+
+ return 0;
+}
+
+// Definitions for transfer list command functions
+typedef int (*CommandFunction)(CommandParameters&);
+
+struct Command {
+ const char* name;
+ CommandFunction f;
+};
+
+// CompareCommands and CompareCommandNames are for the hash table
+
+static int CompareCommands(const void* c1, const void* c2) {
+ return strcmp(((const Command*) c1)->name, ((const Command*) c2)->name);
+}
+
+static int CompareCommandNames(const void* c1, const void* c2) {
+ return strcmp(((const Command*) c1)->name, (const char*) c2);
+}
+
+// HashString is used to hash command names for the hash table
+
+static unsigned int HashString(const char *s) {
+ unsigned int hash = 0;
+ if (s) {
+ while (*s) {
+ hash = hash * 33 + *s++;
+ }
+ }
+ return hash;
+}
+
+// args:
+// - block device (or file) to modify in-place
+// - transfer list (blob)
+// - new data stream (filename within package.zip)
+// - patch stream (filename within package.zip, must be uncompressed)
+
+static Value* PerformBlockImageUpdate(const char* name, State* state, int /* argc */, Expr* argv[],
+ const Command* commands, size_t cmdcount, bool dryrun) {
+ CommandParameters params;
+ memset(&params, 0, sizeof(params));
+ params.canwrite = !dryrun;
+
+ fprintf(stderr, "performing %s\n", dryrun ? "verification" : "update");
+ if (state->is_retry) {
+ is_retry = true;
+ fprintf(stderr, "This update is a retry.\n");
+ }
+
+ Value* blockdev_filename = nullptr;
+ Value* transfer_list_value = nullptr;
+ Value* new_data_fn = nullptr;
+ Value* patch_data_fn = nullptr;
+ if (ReadValueArgs(state, argv, 4, &blockdev_filename, &transfer_list_value,
+ &new_data_fn, &patch_data_fn) < 0) {
+ return StringValue(strdup(""));
+ }
+ std::unique_ptr<Value, decltype(&FreeValue)> blockdev_filename_holder(blockdev_filename,
+ FreeValue);
+ std::unique_ptr<Value, decltype(&FreeValue)> transfer_list_value_holder(transfer_list_value,
+ FreeValue);
+ std::unique_ptr<Value, decltype(&FreeValue)> new_data_fn_holder(new_data_fn, FreeValue);
+ std::unique_ptr<Value, decltype(&FreeValue)> patch_data_fn_holder(patch_data_fn, FreeValue);
+
+ if (blockdev_filename->type != VAL_STRING) {
+ ErrorAbort(state, kArgsParsingFailure, "blockdev_filename argument to %s must be string",
+ name);
+ return StringValue(strdup(""));
+ }
+ if (transfer_list_value->type != VAL_BLOB) {
+ ErrorAbort(state, kArgsParsingFailure, "transfer_list argument to %s must be blob", name);
+ return StringValue(strdup(""));
+ }
+ if (new_data_fn->type != VAL_STRING) {
+ ErrorAbort(state, kArgsParsingFailure, "new_data_fn argument to %s must be string", name);
+ return StringValue(strdup(""));
+ }
+ if (patch_data_fn->type != VAL_STRING) {
+ ErrorAbort(state, kArgsParsingFailure, "patch_data_fn argument to %s must be string",
+ name);
+ return StringValue(strdup(""));
+ }
+
+ UpdaterInfo* ui = reinterpret_cast<UpdaterInfo*>(state->cookie);
+
+ if (ui == nullptr) {
+ return StringValue(strdup(""));
+ }
+
+ FILE* cmd_pipe = ui->cmd_pipe;
+ ZipArchive* za = ui->package_zip;
+
+ if (cmd_pipe == nullptr || za == nullptr) {
+ return StringValue(strdup(""));
+ }
+
+ const ZipEntry* patch_entry = mzFindZipEntry(za, patch_data_fn->data);
+ if (patch_entry == nullptr) {
+ fprintf(stderr, "%s(): no file \"%s\" in package", name, patch_data_fn->data);
+ return StringValue(strdup(""));
+ }
+
+ params.patch_start = ui->package_zip_addr + mzGetZipEntryOffset(patch_entry);
+ const ZipEntry* new_entry = mzFindZipEntry(za, new_data_fn->data);
+ if (new_entry == nullptr) {
+ fprintf(stderr, "%s(): no file \"%s\" in package", name, new_data_fn->data);
+ return StringValue(strdup(""));
+ }
+
+ params.fd = TEMP_FAILURE_RETRY(open(blockdev_filename->data, O_RDWR));
+ unique_fd fd_holder(params.fd);
+
+ if (params.fd == -1) {
+ fprintf(stderr, "open \"%s\" failed: %s\n", blockdev_filename->data, strerror(errno));
+ return StringValue(strdup(""));
+ }
+
+ 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) {
+ fprintf(stderr, "pthread_create failed: %s\n", strerror(error));
+ return StringValue(strdup(""));
+ }
+ }
+
+ // Copy all the lines in transfer_list_value into std::string for
+ // processing.
+ const std::string transfer_list(transfer_list_value->data, transfer_list_value->size);
+ std::vector<std::string> lines = android::base::Split(transfer_list, "\n");
+ if (lines.size() < 2) {
+ ErrorAbort(state, kArgsParsingFailure, "too few lines in the transfer list [%zd]\n",
+ lines.size());
+ return StringValue(strdup(""));
+ }
+
+ // First line in transfer list is the version number
+ if (!android::base::ParseInt(lines[0].c_str(), &params.version, 1, 4)) {
+ fprintf(stderr, "unexpected transfer list version [%s]\n", lines[0].c_str());
+ return StringValue(strdup(""));
+ }
+
+ fprintf(stderr, "blockimg version is %d\n", params.version);
+
+ // Second line in transfer list is the total number of blocks we expect to write
+ int total_blocks;
+ if (!android::base::ParseInt(lines[1].c_str(), &total_blocks, 0)) {
+ ErrorAbort(state, kArgsParsingFailure, "unexpected block count [%s]\n", lines[1].c_str());
+ return StringValue(strdup(""));
+ }
+
+ if (total_blocks == 0) {
+ return StringValue(strdup("t"));
+ }
+
+ size_t start = 2;
+ if (params.version >= 2) {
+ if (lines.size() < 4) {
+ ErrorAbort(state, kArgsParsingFailure, "too few lines in the transfer list [%zu]\n",
+ lines.size());
+ return StringValue(strdup(""));
+ }
+
+ // Third line is how many stash entries are needed simultaneously
+ fprintf(stderr, "maximum stash entries %s\n", lines[2].c_str());
+
+ // Fourth line is the maximum number of blocks that will be stashed simultaneously
+ int stash_max_blocks;
+ if (!android::base::ParseInt(lines[3].c_str(), &stash_max_blocks, 0)) {
+ ErrorAbort(state, kArgsParsingFailure, "unexpected maximum stash blocks [%s]\n",
+ lines[3].c_str());
+ return StringValue(strdup(""));
+ }
+
+ int res = CreateStash(state, stash_max_blocks, blockdev_filename->data, params.stashbase);
+ if (res == -1) {
+ return StringValue(strdup(""));
+ }
+
+ params.createdstash = res;
+
+ start += 2;
+ }
+
+ // Build a hash table of the available commands
+ HashTable* cmdht = mzHashTableCreate(cmdcount, nullptr);
+ std::unique_ptr<HashTable, decltype(&mzHashTableFree)> cmdht_holder(cmdht, mzHashTableFree);
+
+ for (size_t i = 0; i < cmdcount; ++i) {
+ unsigned int cmdhash = HashString(commands[i].name);
+ mzHashTableLookup(cmdht, cmdhash, (void*) &commands[i], CompareCommands, true);
+ }
+
+ int rc = -1;
+
+ // Subsequent lines are all individual transfer commands
+ for (auto it = lines.cbegin() + start; it != lines.cend(); it++) {
+ const std::string& line_str(*it);
+ if (line_str.empty()) {
+ continue;
+ }
+
+ params.tokens = android::base::Split(line_str, " ");
+ params.cpos = 0;
+ params.cmdname = params.tokens[params.cpos++].c_str();
+ params.cmdline = line_str.c_str();
+
+ unsigned int cmdhash = HashString(params.cmdname);
+ const Command* cmd = reinterpret_cast<const Command*>(mzHashTableLookup(cmdht, cmdhash,
+ const_cast<char*>(params.cmdname), CompareCommandNames,
+ false));
+
+ if (cmd == nullptr) {
+ fprintf(stderr, "unexpected command [%s]\n", params.cmdname);
+ goto pbiudone;
+ }
+
+ if (cmd->f != nullptr && cmd->f(params) == -1) {
+ fprintf(stderr, "failed to execute command [%s]\n", line_str.c_str());
+ goto pbiudone;
+ }
+
+ if (params.canwrite) {
+ if (ota_fsync(params.fd) == -1) {
+ failure_type = kFsyncFailure;
+ fprintf(stderr, "fsync failed: %s\n", strerror(errno));
+ goto pbiudone;
+ }
+ fprintf(cmd_pipe, "set_progress %.4f\n", (double) params.written / total_blocks);
+ fflush(cmd_pipe);
+ }
+ }
+
+ if (params.canwrite) {
+ pthread_join(params.thread, nullptr);
+
+ fprintf(stderr, "wrote %zu blocks; expected %d\n", params.written, total_blocks);
+ fprintf(stderr, "stashed %zu blocks\n", params.stashed);
+ fprintf(stderr, "max alloc needed was %zu\n", params.buffer.size());
+
+ const char* partition = strrchr(blockdev_filename->data, '/');
+ if (partition != nullptr && *(partition+1) != 0) {
+ fprintf(cmd_pipe, "log bytes_written_%s: %zu\n", partition + 1,
+ params.written * BLOCKSIZE);
+ fprintf(cmd_pipe, "log bytes_stashed_%s: %zu\n", partition + 1,
+ params.stashed * BLOCKSIZE);
+ fflush(cmd_pipe);
+ }
+ // Delete stash only after successfully completing the update, as it
+ // may contain blocks needed to complete the update later.
+ DeleteStash(params.stashbase);
+ } else {
+ fprintf(stderr, "verified partition contents; update may be resumed\n");
+ }
+
+ rc = 0;
+
+pbiudone:
+ if (ota_fsync(params.fd) == -1) {
+ failure_type = kFsyncFailure;
+ fprintf(stderr, "fsync failed: %s\n", strerror(errno));
+ }
+ // params.fd will be automatically closed because of the fd_holder above.
+
+ // Only delete the stash if the update cannot be resumed, or it's
+ // a verification run and we created the stash.
+ if (params.isunresumable || (!params.canwrite && params.createdstash)) {
+ DeleteStash(params.stashbase);
+ }
+
+ if (failure_type != kNoCause && state->cause_code == kNoCause) {
+ state->cause_code = failure_type;
+ }
+
+ return StringValue(rc == 0 ? strdup("t") : strdup(""));
+}
+
+// The transfer list is a text file containing commands to
+// transfer data from one place to another on the target
+// partition. We parse it and execute the commands in order:
+//
+// zero [rangeset]
+// - fill the indicated blocks with zeros
+//
+// new [rangeset]
+// - fill the blocks with data read from the new_data file
+//
+// erase [rangeset]
+// - mark the given blocks as empty
+//
+// move <...>
+// bsdiff <patchstart> <patchlen> <...>
+// imgdiff <patchstart> <patchlen> <...>
+// - read the source blocks, apply a patch (or not in the
+// case of move), write result to target blocks. bsdiff or
+// imgdiff specifies the type of patch; move means no patch
+// at all.
+//
+// The format of <...> differs between versions 1 and 2;
+// see the LoadSrcTgtVersion{1,2}() functions for a
+// description of what's expected.
+//
+// stash <stash_id> <src_range>
+// - (version 2+ only) load the given source range and stash
+// the data in the given slot of the stash table.
+//
+// free <stash_id>
+// - (version 3+ only) free the given stash data.
+//
+// The creator of the transfer list will guarantee that no block
+// is read (ie, used as the source for a patch or move) after it
+// has been written.
+//
+// In version 2, the creator will guarantee that a given stash is
+// loaded (with a stash command) before it's used in a
+// move/bsdiff/imgdiff command.
+//
+// Within one command the source and target ranges may overlap so
+// in general we need to read the entire source into memory before
+// writing anything to the target blocks.
+//
+// All the patch data is concatenated into one patch_data file in
+// the update package. It must be stored uncompressed because we
+// memory-map it in directly from the archive. (Since patches are
+// already compressed, we lose very little by not compressing
+// their concatenation.)
+//
+// In version 3, commands that read data from the partition (i.e.
+// move/bsdiff/imgdiff/stash) have one or more additional hashes
+// before the range parameters, which are used to check if the
+// command has already been completed and verify the integrity of
+// the source data.
+
+Value* BlockImageVerifyFn(const char* name, State* state, int argc, Expr* argv[]) {
+ // Commands which are not tested are set to nullptr to skip them completely
+ const Command commands[] = {
+ { "bsdiff", PerformCommandDiff },
+ { "erase", nullptr },
+ { "free", PerformCommandFree },
+ { "imgdiff", PerformCommandDiff },
+ { "move", PerformCommandMove },
+ { "new", nullptr },
+ { "stash", PerformCommandStash },
+ { "zero", nullptr }
+ };
+
+ // Perform a dry run without writing to test if an update can proceed
+ return PerformBlockImageUpdate(name, state, argc, argv, commands,
+ sizeof(commands) / sizeof(commands[0]), true);
+}
+
+Value* BlockImageUpdateFn(const char* name, State* state, int argc, Expr* argv[]) {
+ const Command commands[] = {
+ { "bsdiff", PerformCommandDiff },
+ { "erase", PerformCommandErase },
+ { "free", PerformCommandFree },
+ { "imgdiff", PerformCommandDiff },
+ { "move", PerformCommandMove },
+ { "new", PerformCommandNew },
+ { "stash", PerformCommandStash },
+ { "zero", PerformCommandZero }
+ };
+
+ return PerformBlockImageUpdate(name, state, argc, argv, commands,
+ sizeof(commands) / sizeof(commands[0]), false);
+}
+
+Value* RangeSha1Fn(const char* name, State* state, int /* argc */, Expr* argv[]) {
+ Value* blockdev_filename;
+ Value* ranges;
+
+ if (ReadValueArgs(state, argv, 2, &blockdev_filename, &ranges) < 0) {
+ 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, kArgsParsingFailure, "blockdev_filename argument to %s must be string",
+ name);
+ return StringValue(strdup(""));
+ }
+ if (ranges->type != VAL_STRING) {
+ ErrorAbort(state, kArgsParsingFailure, "ranges argument to %s must be string", name);
+ return StringValue(strdup(""));
+ }
+
+ int fd = open(blockdev_filename->data, O_RDWR);
+ unique_fd fd_holder(fd);
+ if (fd < 0) {
+ ErrorAbort(state, kFileOpenFailure, "open \"%s\" failed: %s", blockdev_filename->data,
+ strerror(errno));
+ return StringValue(strdup(""));
+ }
+
+ RangeSet rs;
+ parse_range(ranges->data, rs);
+
+ SHA_CTX ctx;
+ SHA1_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, kLseekFailure, "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, kFreadFailure, "failed to read %s: %s", blockdev_filename->data,
+ strerror(errno));
+ return StringValue(strdup(""));
+ }
+
+ SHA1_Update(&ctx, buffer.data(), BLOCKSIZE);
+ }
+ }
+ uint8_t digest[SHA_DIGEST_LENGTH];
+ SHA1_Final(digest, &ctx);
+
+ return StringValue(strdup(print_sha1(digest).c_str()));
+}
+
+// This function checks if a device has been remounted R/W prior to an incremental
+// OTA update. This is an common cause of update abortion. The function reads the
+// 1st block of each partition and check for mounting time/count. It return string "t"
+// if executes successfully and an empty string otherwise.
+
+Value* CheckFirstBlockFn(const char* name, State* state, int argc, Expr* argv[]) {
+ Value* arg_filename;
+
+ if (ReadValueArgs(state, argv, 1, &arg_filename) < 0) {
+ return nullptr;
+ }
+ std::unique_ptr<Value, decltype(&FreeValue)> filename(arg_filename, FreeValue);
+
+ if (filename->type != VAL_STRING) {
+ ErrorAbort(state, kArgsParsingFailure, "filename argument to %s must be string", name);
+ return StringValue(strdup(""));
+ }
+
+ int fd = open(arg_filename->data, O_RDONLY);
+ unique_fd fd_holder(fd);
+ if (fd == -1) {
+ ErrorAbort(state, kFileOpenFailure, "open \"%s\" failed: %s", arg_filename->data,
+ strerror(errno));
+ return StringValue(strdup(""));
+ }
+
+ RangeSet blk0 {1 /*count*/, 1/*size*/, std::vector<size_t> {0, 1}/*position*/};
+ std::vector<uint8_t> block0_buffer(BLOCKSIZE);
+
+ if (ReadBlocks(blk0, block0_buffer, fd) == -1) {
+ ErrorAbort(state, kFreadFailure, "failed to read %s: %s", arg_filename->data,
+ strerror(errno));
+ return StringValue(strdup(""));
+ }
+
+ // https://ext4.wiki.kernel.org/index.php/Ext4_Disk_Layout
+ // Super block starts from block 0, offset 0x400
+ // 0x2C: len32 Mount time
+ // 0x30: len32 Write time
+ // 0x34: len16 Number of mounts since the last fsck
+ // 0x38: len16 Magic signature 0xEF53
+
+ time_t mount_time = *reinterpret_cast<uint32_t*>(&block0_buffer[0x400+0x2C]);
+ uint16_t mount_count = *reinterpret_cast<uint16_t*>(&block0_buffer[0x400+0x34]);
+
+ if (mount_count > 0) {
+ uiPrintf(state, "Device was remounted R/W %d times\n", mount_count);
+ uiPrintf(state, "Last remount happened on %s", ctime(&mount_time));
+ }
+
+ return StringValue(strdup("t"));
+}
+
+
+Value* BlockImageRecoverFn(const char* name, State* state, int argc, Expr* argv[]) {
+ Value* arg_filename;
+ Value* arg_ranges;
+
+ if (ReadValueArgs(state, argv, 2, &arg_filename, &arg_ranges) < 0) {
+ return NULL;
+ }
+
+ std::unique_ptr<Value, decltype(&FreeValue)> filename(arg_filename, FreeValue);
+ std::unique_ptr<Value, decltype(&FreeValue)> ranges(arg_ranges, FreeValue);
+
+ if (filename->type != VAL_STRING) {
+ ErrorAbort(state, kArgsParsingFailure, "filename argument to %s must be string", name);
+ return StringValue(strdup(""));
+ }
+ if (ranges->type != VAL_STRING) {
+ ErrorAbort(state, kArgsParsingFailure, "ranges argument to %s must be string", name);
+ return StringValue(strdup(""));
+ }
+
+ // Output notice to log when recover is attempted
+ fprintf(stderr, "%s image corrupted, attempting to recover...\n", filename->data);
+
+ // When opened with O_RDWR, libfec rewrites corrupted blocks when they are read
+ fec::io fh(filename->data, O_RDWR);
+
+ if (!fh) {
+ ErrorAbort(state, kLibfecFailure, "fec_open \"%s\" failed: %s", filename->data,
+ strerror(errno));
+ return StringValue(strdup(""));
+ }
+
+ if (!fh.has_ecc() || !fh.has_verity()) {
+ ErrorAbort(state, kLibfecFailure, "unable to use metadata to correct errors");
+ return StringValue(strdup(""));
+ }
+
+ fec_status status;
+
+ if (!fh.get_status(status)) {
+ ErrorAbort(state, kLibfecFailure, "failed to read FEC status");
+ return StringValue(strdup(""));
+ }
+
+ RangeSet rs;
+ parse_range(ranges->data, rs);
+
+ uint8_t buffer[BLOCKSIZE];
+
+ for (size_t i = 0; i < rs.count; ++i) {
+ for (size_t j = rs.pos[i * 2]; j < rs.pos[i * 2 + 1]; ++j) {
+ // Stay within the data area, libfec validates and corrects metadata
+ if (status.data_size <= (uint64_t)j * BLOCKSIZE) {
+ continue;
+ }
+
+ if (fh.pread(buffer, BLOCKSIZE, (off64_t)j * BLOCKSIZE) != BLOCKSIZE) {
+ ErrorAbort(state, kLibfecFailure, "failed to recover %s (block %zu): %s",
+ filename->data, j, strerror(errno));
+ return StringValue(strdup(""));
+ }
+
+ // If we want to be able to recover from a situation where rewriting a corrected
+ // block doesn't guarantee the same data will be returned when re-read later, we
+ // can save a copy of corrected blocks to /cache. Note:
+ //
+ // 1. Maximum space required from /cache is the same as the maximum number of
+ // corrupted blocks we can correct. For RS(255, 253) and a 2 GiB partition,
+ // this would be ~16 MiB, for example.
+ //
+ // 2. To find out if this block was corrupted, call fec_get_status after each
+ // read and check if the errors field value has increased.
+ }
+ }
+ fprintf(stderr, "...%s image recovered successfully.\n", filename->data);
+ return StringValue(strdup("t"));
+}
+
+void RegisterBlockImageFunctions() {
+ RegisterFunction("block_image_verify", BlockImageVerifyFn);
+ RegisterFunction("block_image_update", BlockImageUpdateFn);
+ RegisterFunction("block_image_recover", BlockImageRecoverFn);
+ RegisterFunction("check_first_block", CheckFirstBlockFn);
+ RegisterFunction("range_sha1", RangeSha1Fn);
+}
diff --git a/updater/install.c b/updater/install.cpp
index d0e7d1aef..88f771471 100644
--- a/updater/install.c
+++ b/updater/install.cpp
@@ -34,16 +34,25 @@
#include <linux/xattr.h>
#include <inttypes.h>
+#include <memory>
+#include <vector>
+
+#include <android-base/parseint.h>
+#include <android-base/strings.h>
+#include <android-base/stringprintf.h>
+
#include "bootloader.h"
#include "applypatch/applypatch.h"
#include "cutils/android_reboot.h"
#include "cutils/misc.h"
#include "cutils/properties.h"
#include "edify/expr.h"
-#include "mincrypt/sha.h"
+#include "error_code.h"
#include "minzip/DirUtil.h"
#include "mtdutils/mounts.h"
#include "mtdutils/mtdutils.h"
+#include "openssl/sha.h"
+#include "ota_io.h"
#include "updater.h"
#include "applypatch/applypatch.h"
#include "flashutils/flashutils.h"
@@ -57,32 +66,44 @@
#include "wipe.h"
#endif
-void uiPrint(State* state, char* buffer) {
- char* line = strtok(buffer, "\n");
- UpdaterInfo* ui = (UpdaterInfo*)(state->cookie);
- while (line) {
- fprintf(ui->cmd_pipe, "ui_print %s\n", line);
- line = strtok(NULL, "\n");
+// Send over the buffer to recovery though the command pipe.
+static void uiPrint(State* state, const std::string& buffer) {
+ UpdaterInfo* ui = reinterpret_cast<UpdaterInfo*>(state->cookie);
+
+ // "line1\nline2\n" will be split into 3 tokens: "line1", "line2" and "".
+ // So skip sending empty strings to UI.
+ std::vector<std::string> lines = android::base::Split(buffer, "\n");
+ for (auto& line: lines) {
+ if (!line.empty()) {
+ fprintf(ui->cmd_pipe, "ui_print %s\n", line.c_str());
+ fprintf(ui->cmd_pipe, "ui_print\n");
+ }
}
- fprintf(ui->cmd_pipe, "ui_print\n");
+
+ // On the updater side, we need to dump the contents to stderr (which has
+ // been redirected to the log file). Because the recovery will only print
+ // the contents to screen when processing pipe command ui_print.
+ fprintf(stderr, "%s", buffer.c_str());
}
__attribute__((__format__(printf, 2, 3))) __nonnull((2))
void uiPrintf(State* state, const char* format, ...) {
- char error_msg[1024];
+ std::string error_msg;
+
va_list ap;
va_start(ap, format);
- vsnprintf(error_msg, sizeof(error_msg), format, ap);
+ android::base::StringAppendV(&error_msg, format, ap);
va_end(ap);
+
uiPrint(state, error_msg);
}
// Take a sha-1 digest and return it as a newly-allocated hex string.
char* PrintSha1(const uint8_t* digest) {
- char* buffer = malloc(SHA_DIGEST_SIZE*2 + 1);
- int i;
+ char* buffer = reinterpret_cast<char*>(malloc(SHA_DIGEST_LENGTH*2 + 1));
const char* alphabet = "0123456789abcdef";
- for (i = 0; i < SHA_DIGEST_SIZE; ++i) {
+ size_t i;
+ for (i = 0; i < SHA_DIGEST_LENGTH; ++i) {
buffer[i*2] = alphabet[(digest[i] >> 4) & 0xf];
buffer[i*2+1] = alphabet[digest[i] & 0xf];
}
@@ -97,7 +118,7 @@ char* PrintSha1(const uint8_t* digest) {
Value* MountFn(const char* name, State* state, int argc, Expr* argv[]) {
char* result = NULL;
if (argc != 4 && argc != 5) {
- return ErrorAbort(state, "%s() expects 4-5 args, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 4-5 args, got %d", name, argc);
}
char* fs_type;
char* partition_type;
@@ -120,35 +141,38 @@ Value* MountFn(const char* name, State* state, int argc, Expr* argv[]) {
}
if (strlen(fs_type) == 0) {
- ErrorAbort(state, "fs_type argument to %s() can't be empty", name);
+ ErrorAbort(state, kArgsParsingFailure, "fs_type argument to %s() can't be empty", name);
goto done;
}
if (strlen(partition_type) == 0) {
- ErrorAbort(state, "partition_type argument to %s() can't be empty",
+ ErrorAbort(state, kArgsParsingFailure, "partition_type argument to %s() can't be empty",
name);
goto done;
}
if (strlen(location) == 0) {
- ErrorAbort(state, "location argument to %s() can't be empty", name);
+ ErrorAbort(state, kArgsParsingFailure, "location argument to %s() can't be empty", name);
goto done;
}
if (strlen(mount_point) == 0) {
- ErrorAbort(state, "mount_point argument to %s() can't be empty", name);
+ ErrorAbort(state, kArgsParsingFailure, "mount_point argument to %s() can't be empty",
+ name);
goto done;
}
- char *secontext = NULL;
+ {
+ char *secontext = NULL;
- if (sehandle) {
- selabel_lookup(sehandle, &secontext, mount_point, 0755);
- setfscreatecon(secontext);
- }
+ if (sehandle) {
+ selabel_lookup(sehandle, &secontext, mount_point, 0755);
+ setfscreatecon(secontext);
+ }
- mkdir(mount_point, 0755);
+ mkdir(mount_point, 0755);
- if (secontext) {
- freecon(secontext);
- setfscreatecon(NULL);
+ if (secontext) {
+ freecon(secontext);
+ setfscreatecon(NULL);
+ }
}
if (strcmp(partition_type, "MTD") == 0) {
@@ -156,7 +180,7 @@ Value* MountFn(const char* name, State* state, int argc, Expr* argv[]) {
const MtdPartition* mtd;
mtd = mtd_find_partition_by_name(location);
if (mtd == NULL) {
- uiPrintf(state, "%s: no mtd partition named \"%s\"",
+ uiPrintf(state, "%s: no mtd partition named \"%s\"\n",
name, location);
result = strdup("");
goto done;
@@ -194,23 +218,25 @@ done:
Value* IsMountedFn(const char* name, State* state, int argc, Expr* argv[]) {
char* result = NULL;
if (argc != 1) {
- return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc);
}
char* mount_point;
if (ReadArgs(state, argv, 1, &mount_point) < 0) {
return NULL;
}
if (strlen(mount_point) == 0) {
- ErrorAbort(state, "mount_point argument to unmount() can't be empty");
+ ErrorAbort(state, kArgsParsingFailure, "mount_point argument to unmount() can't be empty");
goto done;
}
scan_mounted_volumes();
- const MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point);
- if (vol == NULL) {
- result = strdup("");
- } else {
- result = mount_point;
+ {
+ const MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point);
+ if (vol == NULL) {
+ result = strdup("");
+ } else {
+ result = mount_point;
+ }
}
done:
@@ -222,29 +248,31 @@ done:
Value* UnmountFn(const char* name, State* state, int argc, Expr* argv[]) {
char* result = NULL;
if (argc != 1) {
- return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc);
}
char* mount_point;
if (ReadArgs(state, argv, 1, &mount_point) < 0) {
return NULL;
}
if (strlen(mount_point) == 0) {
- ErrorAbort(state, "mount_point argument to unmount() can't be empty");
+ ErrorAbort(state, kArgsParsingFailure, "mount_point argument to unmount() can't be empty");
goto done;
}
scan_mounted_volumes();
- const MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point);
- if (vol == NULL) {
- uiPrintf(state, "unmount of %s failed; no such volume\n", mount_point);
- result = strdup("");
- } else {
- int ret = unmount_mounted_volume(vol);
- if (ret != 0) {
- uiPrintf(state, "unmount of %s failed (%d): %s\n",
- mount_point, ret, strerror(errno));
+ {
+ const MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point);
+ if (vol == NULL) {
+ uiPrintf(state, "unmount of %s failed; no such volume\n", mount_point);
+ result = strdup("");
+ } else {
+ int ret = unmount_mounted_volume(vol);
+ if (ret != 0) {
+ uiPrintf(state, "unmount of %s failed (%d): %s\n",
+ mount_point, ret, strerror(errno));
+ }
+ result = mount_point;
}
- result = mount_point;
}
done:
@@ -278,7 +306,7 @@ static int exec_cmd(const char* path, char* const argv[]) {
Value* FormatFn(const char* name, State* state, int argc, Expr* argv[]) {
char* result = NULL;
if (argc != 5) {
- return ErrorAbort(state, "%s() expects 5 args, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 5 args, got %d", name, argc);
}
char* fs_type;
char* partition_type;
@@ -291,21 +319,22 @@ Value* FormatFn(const char* name, State* state, int argc, Expr* argv[]) {
}
if (strlen(fs_type) == 0) {
- ErrorAbort(state, "fs_type argument to %s() can't be empty", name);
+ ErrorAbort(state, kArgsParsingFailure, "fs_type argument to %s() can't be empty", name);
goto done;
}
if (strlen(partition_type) == 0) {
- ErrorAbort(state, "partition_type argument to %s() can't be empty",
+ ErrorAbort(state, kArgsParsingFailure, "partition_type argument to %s() can't be empty",
name);
goto done;
}
if (strlen(location) == 0) {
- ErrorAbort(state, "location argument to %s() can't be empty", name);
+ ErrorAbort(state, kArgsParsingFailure, "location argument to %s() can't be empty", name);
goto done;
}
if (strlen(mount_point) == 0) {
- ErrorAbort(state, "mount_point argument to %s() can't be empty", name);
+ ErrorAbort(state, kArgsParsingFailure, "mount_point argument to %s() can't be empty",
+ name);
goto done;
}
@@ -380,7 +409,7 @@ done:
Value* RenameFn(const char* name, State* state, int argc, Expr* argv[]) {
char* result = NULL;
if (argc != 2) {
- return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %d", name, argc);
}
char* src_name;
@@ -390,21 +419,21 @@ Value* RenameFn(const char* name, State* state, int argc, Expr* argv[]) {
return NULL;
}
if (strlen(src_name) == 0) {
- ErrorAbort(state, "src_name argument to %s() can't be empty", name);
+ ErrorAbort(state, kArgsParsingFailure, "src_name argument to %s() can't be empty", name);
goto done;
}
if (strlen(dst_name) == 0) {
- ErrorAbort(state, "dst_name argument to %s() can't be empty", name);
+ ErrorAbort(state, kArgsParsingFailure, "dst_name argument to %s() can't be empty", name);
goto done;
}
if (make_parents(dst_name) != 0) {
- ErrorAbort(state, "Creating parent of %s failed, error %s",
+ ErrorAbort(state, kFileRenameFailure, "Creating parent of %s failed, error %s",
dst_name, strerror(errno));
} else if (access(dst_name, F_OK) == 0 && access(src_name, F_OK) != 0) {
// File was already moved
result = dst_name;
} else if (rename(src_name, dst_name) != 0) {
- ErrorAbort(state, "Rename of %s to %s failed, error %s",
+ ErrorAbort(state, kFileRenameFailure, "Rename of %s to %s failed, error %s",
src_name, dst_name, strerror(errno));
} else {
result = dst_name;
@@ -417,13 +446,11 @@ done:
}
Value* DeleteFn(const char* name, State* state, int argc, Expr* argv[]) {
- char** paths = malloc(argc * sizeof(char*));
- int i;
- for (i = 0; i < argc; ++i) {
+ char** paths = reinterpret_cast<char**>(malloc(argc * sizeof(char*)));
+ for (int i = 0; i < argc; ++i) {
paths[i] = Evaluate(state, argv[i]);
if (paths[i] == NULL) {
- int j;
- for (j = 0; j < i; ++i) {
+ for (int j = 0; j < i; ++j) {
free(paths[j]);
}
free(paths);
@@ -434,7 +461,7 @@ Value* DeleteFn(const char* name, State* state, int argc, Expr* argv[]) {
bool recursive = (strcmp(name, "delete_recursive") == 0);
int success = 0;
- for (i = 0; i < argc; ++i) {
+ for (int i = 0; i < argc; ++i) {
if ((recursive ? dirUnlinkHierarchy(paths[i]) : unlink(paths[i])) == 0)
++success;
free(paths[i]);
@@ -449,7 +476,7 @@ Value* DeleteFn(const char* name, State* state, int argc, Expr* argv[]) {
Value* ShowProgressFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc != 2) {
- return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %d", name, argc);
}
char* frac_str;
char* sec_str;
@@ -458,7 +485,8 @@ Value* ShowProgressFn(const char* name, State* state, int argc, Expr* argv[]) {
}
double frac = strtod(frac_str, NULL);
- int sec = strtol(sec_str, NULL, 10);
+ int sec;
+ android::base::ParseInt(sec_str, &sec);
UpdaterInfo* ui = (UpdaterInfo*)(state->cookie);
fprintf(ui->cmd_pipe, "progress %f %d\n", frac, sec);
@@ -469,7 +497,7 @@ Value* ShowProgressFn(const char* name, State* state, int argc, Expr* argv[]) {
Value* SetProgressFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc != 1) {
- return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc);
}
char* frac_str;
if (ReadArgs(state, argv, 1, &frac_str) < 0) {
@@ -488,7 +516,7 @@ Value* SetProgressFn(const char* name, State* state, int argc, Expr* argv[]) {
Value* PackageExtractDirFn(const char* name, State* state,
int argc, Expr* argv[]) {
if (argc != 2) {
- return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %d", name, argc);
}
char* zip_path;
char* dest_path;
@@ -516,13 +544,11 @@ Value* PackageExtractDirFn(const char* name, State* state,
Value* PackageExtractFileFn(const char* name, State* state,
int argc, Expr* argv[]) {
if (argc < 1 || argc > 2) {
- return ErrorAbort(state, "%s() expects 1 or 2 args, got %d",
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 or 2 args, got %d",
name, argc);
}
bool success = false;
- UpdaterInfo* ui = (UpdaterInfo*)(state->cookie);
-
if (argc == 2) {
// The two-argument version extracts to a file.
@@ -538,14 +564,23 @@ Value* PackageExtractFileFn(const char* name, State* state,
goto done2;
}
- FILE* f = fopen(dest_path, "wb");
- if (f == NULL) {
- printf("%s: can't open %s for write: %s\n",
- name, dest_path, strerror(errno));
- goto done2;
+ {
+ int fd = TEMP_FAILURE_RETRY(ota_open(dest_path, O_WRONLY | O_CREAT | O_TRUNC | O_SYNC,
+ S_IRUSR | S_IWUSR));
+ if (fd == -1) {
+ printf("%s: can't open %s for write: %s\n", name, dest_path, strerror(errno));
+ goto done2;
+ }
+ success = mzExtractZipEntryToFile(za, entry, fd);
+ if (ota_fsync(fd) == -1) {
+ printf("fsync of \"%s\" failed: %s\n", dest_path, strerror(errno));
+ success = false;
+ }
+ if (ota_close(fd) == -1) {
+ printf("close of \"%s\" failed: %s\n", dest_path, strerror(errno));
+ success = false;
+ }
}
- success = mzExtractZipEntryToFile(za, entry, fileno(f));
- fclose(f);
done2:
free(zip_path);
@@ -556,13 +591,13 @@ Value* PackageExtractFileFn(const char* name, State* state,
// as the result.
char* zip_path;
- Value* v = malloc(sizeof(Value));
+ if (ReadArgs(state, argv, 1, &zip_path) < 0) return NULL;
+
+ Value* v = reinterpret_cast<Value*>(malloc(sizeof(Value)));
v->type = VAL_BLOB;
v->size = -1;
v->data = NULL;
- if (ReadArgs(state, argv, 1, &zip_path) < 0) return NULL;
-
ZipArchive* za = ((UpdaterInfo*)(state->cookie))->package_zip;
const ZipEntry* entry = mzFindZipEntry(za, zip_path);
if (entry == NULL) {
@@ -571,7 +606,7 @@ Value* PackageExtractFileFn(const char* name, State* state,
}
v->size = mzGetZipEntryUncompLen(entry);
- v->data = malloc(v->size);
+ v->data = reinterpret_cast<char*>(malloc(v->size));
if (v->data == NULL) {
printf("%s: failed to allocate %ld bytes for %s\n",
name, (long)v->size, zip_path);
@@ -617,7 +652,7 @@ static int make_parents(char* name) {
// unlinks any previously existing src1, src2, etc before creating symlinks.
Value* SymlinkFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc == 0) {
- return ErrorAbort(state, "%s() expects 1+ args, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1+ args, got %d", name, argc);
}
char* target;
target = Evaluate(state, argv[0]);
@@ -653,7 +688,7 @@ Value* SymlinkFn(const char* name, State* state, int argc, Expr* argv[]) {
}
free(srcs);
if (bad) {
- return ErrorAbort(state, "%s: some symlinks failed", name);
+ return ErrorAbort(state, kSymlinkFailure, "%s: some symlinks failed", name);
}
return StringValue(strdup(""));
}
@@ -870,41 +905,42 @@ static int do_SetMetadataRecursive(const char* filename, const struct stat *stat
}
static Value* SetMetadataFn(const char* name, State* state, int argc, Expr* argv[]) {
- int i;
int bad = 0;
- static int nwarnings = 0;
struct stat sb;
Value* result = NULL;
bool recursive = (strcmp(name, "set_metadata_recursive") == 0);
if ((argc % 2) != 1) {
- return ErrorAbort(state, "%s() expects an odd number of arguments, got %d",
- name, argc);
+ return ErrorAbort(state, kArgsParsingFailure,
+ "%s() expects an odd number of arguments, got %d", name, argc);
}
char** args = ReadVarArgs(state, argc, argv);
if (args == NULL) return NULL;
if (lstat(args[0], &sb) == -1) {
- result = ErrorAbort(state, "%s: Error on lstat of \"%s\": %s", name, args[0], strerror(errno));
+ result = ErrorAbort(state, kSetMetadataFailure, "%s: Error on lstat of \"%s\": %s",
+ name, args[0], strerror(errno));
goto done;
}
- struct perm_parsed_args parsed = ParsePermArgs(state, argc, args);
+ {
+ struct perm_parsed_args parsed = ParsePermArgs(state, argc, args);
- if (recursive) {
- recursive_parsed_args = parsed;
- recursive_state = state;
- bad += nftw(args[0], do_SetMetadataRecursive, 30, FTW_CHDIR | FTW_DEPTH | FTW_PHYS);
- memset(&recursive_parsed_args, 0, sizeof(recursive_parsed_args));
- recursive_state = NULL;
- } else {
- bad += ApplyParsedPerms(state, args[0], &sb, parsed);
+ if (recursive) {
+ recursive_parsed_args = parsed;
+ recursive_state = state;
+ bad += nftw(args[0], do_SetMetadataRecursive, 30, FTW_CHDIR | FTW_DEPTH | FTW_PHYS);
+ memset(&recursive_parsed_args, 0, sizeof(recursive_parsed_args));
+ recursive_state = NULL;
+ } else {
+ bad += ApplyParsedPerms(state, args[0], &sb, parsed);
+ }
}
done:
- for (i = 0; i < argc; ++i) {
+ for (int i = 0; i < argc; ++i) {
free(args[i]);
}
free(args);
@@ -914,7 +950,7 @@ done:
}
if (bad > 0) {
- return ErrorAbort(state, "%s: some changes failed", name);
+ return ErrorAbort(state, kSetMetadataFailure, "%s: some changes failed", name);
}
return StringValue(strdup(""));
@@ -922,10 +958,9 @@ done:
Value* GetPropFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc != 1) {
- return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc);
}
- char* key;
- key = Evaluate(state, argv[0]);
+ char* key = Evaluate(state, argv[0]);
if (key == NULL) return NULL;
char value[PROPERTY_VALUE_MAX];
@@ -952,34 +987,36 @@ Value* FileGetPropFn(const char* name, State* state, int argc, Expr* argv[]) {
struct stat st;
if (stat(filename, &st) < 0) {
- ErrorAbort(state, "%s: failed to stat \"%s\": %s",
- name, filename, strerror(errno));
+ ErrorAbort(state, kFileGetPropFailure, "%s: failed to stat \"%s\": %s", name, filename,
+ strerror(errno));
goto done;
}
#define MAX_FILE_GETPROP_SIZE 65536
if (st.st_size > MAX_FILE_GETPROP_SIZE) {
- ErrorAbort(state, "%s too large for %s (max %d)",
- filename, name, MAX_FILE_GETPROP_SIZE);
+ ErrorAbort(state, kFileGetPropFailure, "%s too large for %s (max %d)", filename, name,
+ MAX_FILE_GETPROP_SIZE);
goto done;
}
- buffer = malloc(st.st_size+1);
+ buffer = reinterpret_cast<char*>(malloc(st.st_size+1));
if (buffer == NULL) {
- ErrorAbort(state, "%s: failed to alloc %lld bytes", name, (long long)st.st_size+1);
+ ErrorAbort(state, kFileGetPropFailure, "%s: failed to alloc %lld bytes", name,
+ (long long)st.st_size+1);
goto done;
}
- FILE* f = fopen(filename, "rb");
+ FILE* f;
+ f = fopen(filename, "rb");
if (f == NULL) {
- ErrorAbort(state, "%s: failed to open %s: %s",
- name, filename, strerror(errno));
+ ErrorAbort(state, kFileOpenFailure, "%s: failed to open %s: %s", name, filename,
+ strerror(errno));
goto done;
}
- if (fread(buffer, 1, st.st_size, f) != st.st_size) {
- ErrorAbort(state, "%s: failed to read %lld bytes from %s",
+ if (ota_fread(buffer, 1, st.st_size, f) != static_cast<size_t>(st.st_size)) {
+ ErrorAbort(state, kFreadFailure, "%s: failed to read %lld bytes from %s",
name, (long long)st.st_size+1, filename);
fclose(f);
goto done;
@@ -988,7 +1025,8 @@ Value* FileGetPropFn(const char* name, State* state, int argc, Expr* argv[]) {
fclose(f);
- char* line = strtok(buffer, "\n");
+ char* line;
+ line = strtok(buffer, "\n");
do {
// skip whitespace at start of line
while (*line && isspace(*line)) ++line;
@@ -1032,15 +1070,6 @@ Value* FileGetPropFn(const char* name, State* state, int argc, Expr* argv[]) {
return StringValue(result);
}
-
-static bool write_raw_image_cb(const unsigned char* data,
- int data_len, void* ctx) {
- int r = mtd_write_data((MtdWriteContext*)ctx, (const char *)data, data_len);
- if (r == data_len) return true;
- printf("%s\n", strerror(errno));
- return false;
-}
-
// write_raw_image(filename_or_blob, partition)
Value* WriteRawImageFn(const char* name, State* state, int argc, Expr* argv[]) {
char* result = NULL;
@@ -1053,27 +1082,80 @@ Value* WriteRawImageFn(const char* name, State* state, int argc, Expr* argv[]) {
char* partition = NULL;
if (partition_value->type != VAL_STRING) {
- ErrorAbort(state, "partition argument to %s must be string", name);
+ ErrorAbort(state, kArgsParsingFailure, "partition argument to %s must be string", name);
goto done;
}
partition = partition_value->data;
if (strlen(partition) == 0) {
- ErrorAbort(state, "partition argument to %s can't be empty", name);
+ ErrorAbort(state, kArgsParsingFailure, "partition argument to %s can't be empty", name);
goto done;
}
if (contents->type == VAL_STRING && strlen((char*) contents->data) == 0) {
- ErrorAbort(state, "file argument to %s can't be empty", name);
+ ErrorAbort(state, kArgsParsingFailure, "file argument to %s can't be empty", name);
goto done;
}
- char* filename = contents->data;
- if (0 == restore_raw_partition(NULL, partition, filename))
- result = strdup(partition);
- else {
+ mtd_scan_partitions();
+ const MtdPartition* mtd;
+ mtd = mtd_find_partition_by_name(partition);
+ if (mtd == NULL) {
+ printf("%s: no mtd partition named \"%s\"\n", name, partition);
result = strdup("");
goto done;
}
+ MtdWriteContext* ctx;
+ ctx = mtd_write_partition(mtd);
+ if (ctx == NULL) {
+ printf("%s: can't write mtd partition \"%s\"\n",
+ name, partition);
+ result = strdup("");
+ goto done;
+ }
+
+ bool success;
+
+ if (contents->type == VAL_STRING) {
+ // we're given a filename as the contents
+ char* filename = contents->data;
+ FILE* f = ota_fopen(filename, "rb");
+ if (f == NULL) {
+ printf("%s: can't open %s: %s\n", name, filename, strerror(errno));
+ result = strdup("");
+ goto done;
+ }
+
+ success = true;
+ char* buffer = reinterpret_cast<char*>(malloc(BUFSIZ));
+ int read;
+ while (success && (read = ota_fread(buffer, 1, BUFSIZ, f)) > 0) {
+ int wrote = mtd_write_data(ctx, buffer, read);
+ success = success && (wrote == read);
+ }
+ free(buffer);
+ ota_fclose(f);
+ } else {
+ // we're given a blob as the contents
+ ssize_t wrote = mtd_write_data(ctx, contents->data, contents->size);
+ success = (wrote == contents->size);
+ }
+ if (!success) {
+ printf("mtd_write_data to %s failed: %s\n",
+ partition, strerror(errno));
+ }
+
+ if (mtd_erase_blocks(ctx, -1) == -1) {
+ printf("%s: error erasing blocks of %s\n", name, partition);
+ }
+ if (mtd_write_close(ctx) != 0) {
+ printf("%s: error closing write of %s\n", name, partition);
+ }
+
+ printf("%s %s partition\n",
+ success ? "wrote" : "failed to write", partition);
+
+ result = success ? partition : strdup("");
+
done:
if (result != partition) FreeValue(partition_value);
FreeValue(contents);
@@ -1088,13 +1170,12 @@ Value* ApplyPatchSpaceFn(const char* name, State* state,
return NULL;
}
- char* endptr;
- size_t bytes = strtol(bytes_str, &endptr, 10);
- if (bytes == 0 && endptr == bytes_str) {
- ErrorAbort(state, "%s(): can't parse \"%s\" as byte count\n\n",
+ size_t bytes;
+ if (!android::base::ParseUint(bytes_str, &bytes)) {
+ ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count\n\n",
name, bytes_str);
free(bytes_str);
- return NULL;
+ return nullptr;
}
return StringValue(strdup(CacheSizeCheck(bytes) ? "" : "t"));
@@ -1104,9 +1185,8 @@ Value* ApplyPatchSpaceFn(const char* name, State* state,
Value* ApplyPatchFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc < 6 || (argc % 2) == 1) {
- return ErrorAbort(state, "%s(): expected at least 6 args and an "
- "even number, got %d",
- name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s(): expected at least 6 args and an "
+ "even number, got %d", name, argc);
}
char* source_filename;
@@ -1118,57 +1198,52 @@ Value* ApplyPatchFn(const char* name, State* state, int argc, Expr* argv[]) {
return NULL;
}
- char* endptr;
- size_t target_size = strtol(target_size_str, &endptr, 10);
- if (target_size == 0 && endptr == target_size_str) {
- ErrorAbort(state, "%s(): can't parse \"%s\" as byte count",
+ size_t target_size;
+ if (!android::base::ParseUint(target_size_str, &target_size)) {
+ ErrorAbort(state, kArgsParsingFailure, "%s(): can't parse \"%s\" as byte count",
name, target_size_str);
free(source_filename);
free(target_filename);
free(target_sha1);
free(target_size_str);
- return NULL;
+ return nullptr;
}
int patchcount = (argc-4) / 2;
- Value** patches = ReadValueVarArgs(state, argc-4, argv+4);
-
- int i;
- for (i = 0; i < patchcount; ++i) {
- if (patches[i*2]->type != VAL_STRING) {
- ErrorAbort(state, "%s(): sha-1 #%d is not string", name, i);
- break;
+ std::unique_ptr<Value*, decltype(&free)> arg_values(ReadValueVarArgs(state, argc-4, argv+4),
+ free);
+ if (!arg_values) {
+ return nullptr;
+ }
+ std::vector<std::unique_ptr<Value, decltype(&FreeValue)>> patch_shas;
+ std::vector<std::unique_ptr<Value, decltype(&FreeValue)>> patches;
+ // Protect values by unique_ptrs first to get rid of memory leak.
+ for (int i = 0; i < patchcount * 2; i += 2) {
+ patch_shas.emplace_back(arg_values.get()[i], FreeValue);
+ patches.emplace_back(arg_values.get()[i+1], FreeValue);
+ }
+
+ for (int i = 0; i < patchcount; ++i) {
+ if (patch_shas[i]->type != VAL_STRING) {
+ ErrorAbort(state, kArgsParsingFailure, "%s(): sha-1 #%d is not string", name, i);
+ return nullptr;
}
- if (patches[i*2+1]->type != VAL_BLOB) {
- ErrorAbort(state, "%s(): patch #%d is not blob", name, i);
- break;
+ if (patches[i]->type != VAL_BLOB) {
+ ErrorAbort(state, kArgsParsingFailure, "%s(): patch #%d is not blob", name, i);
+ return nullptr;
}
}
- if (i != patchcount) {
- for (i = 0; i < patchcount*2; ++i) {
- FreeValue(patches[i]);
- }
- free(patches);
- return NULL;
- }
- char** patch_sha_str = malloc(patchcount * sizeof(char*));
- for (i = 0; i < patchcount; ++i) {
- patch_sha_str[i] = patches[i*2]->data;
- patches[i*2]->data = NULL;
- FreeValue(patches[i*2]);
- patches[i] = patches[i*2+1];
+ std::vector<char*> patch_sha_str;
+ std::vector<Value*> patch_ptrs;
+ for (int i = 0; i < patchcount; ++i) {
+ patch_sha_str.push_back(patch_shas[i]->data);
+ patch_ptrs.push_back(patches[i].get());
}
int result = applypatch(source_filename, target_filename,
target_sha1, target_size,
- patchcount, patch_sha_str, patches, NULL);
-
- for (i = 0; i < patchcount; ++i) {
- FreeValue(patches[i]);
- }
- free(patch_sha_str);
- free(patches);
+ patchcount, patch_sha_str.data(), patch_ptrs.data(), NULL);
return StringValue(strdup(result == 0 ? "t" : ""));
}
@@ -1177,7 +1252,7 @@ Value* ApplyPatchFn(const char* name, State* state, int argc, Expr* argv[]) {
Value* ApplyPatchCheckFn(const char* name, State* state,
int argc, Expr* argv[]) {
if (argc < 1) {
- return ErrorAbort(state, "%s(): expected at least 1 arg, got %d",
+ return ErrorAbort(state, kArgsParsingFailure, "%s(): expected at least 1 arg, got %d",
name, argc);
}
@@ -1200,33 +1275,29 @@ Value* ApplyPatchCheckFn(const char* name, State* state,
return StringValue(strdup(result == 0 ? "t" : ""));
}
+// This is the updater side handler for ui_print() in edify script. Contents
+// will be sent over to the recovery side for on-screen display.
Value* UIPrintFn(const char* name, State* state, int argc, Expr* argv[]) {
char** args = ReadVarArgs(state, argc, argv);
if (args == NULL) {
return NULL;
}
- int size = 0;
- int i;
- for (i = 0; i < argc; ++i) {
- size += strlen(args[i]);
- }
- char* buffer = malloc(size+1);
- size = 0;
- for (i = 0; i < argc; ++i) {
- strcpy(buffer+size, args[i]);
- size += strlen(args[i]);
+ std::string buffer;
+ for (int i = 0; i < argc; ++i) {
+ buffer += args[i];
free(args[i]);
}
free(args);
- buffer[size] = '\0';
+
+ buffer += "\n";
uiPrint(state, buffer);
- return StringValue(buffer);
+ return StringValue(strdup(buffer.c_str()));
}
Value* WipeCacheFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc != 0) {
- return ErrorAbort(state, "%s() expects no args, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %d", name, argc);
}
fprintf(((UpdaterInfo*)(state->cookie))->cmd_pipe, "wipe_cache\n");
return StringValue(strdup("t"));
@@ -1234,14 +1305,14 @@ Value* WipeCacheFn(const char* name, State* state, int argc, Expr* argv[]) {
Value* RunProgramFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc < 1) {
- return ErrorAbort(state, "%s() expects at least 1 arg", name);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
}
char** args = ReadVarArgs(state, argc, argv);
if (args == NULL) {
return NULL;
}
- char** args2 = malloc(sizeof(char*) * (argc+1));
+ char** args2 = reinterpret_cast<char**>(malloc(sizeof(char*) * (argc+1)));
memcpy(args2, args, sizeof(char*) * argc);
args2[argc] = NULL;
@@ -1288,27 +1359,30 @@ Value* RunProgramFn(const char* name, State* state, int argc, Expr* argv[]) {
//
Value* Sha1CheckFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc < 1) {
- return ErrorAbort(state, "%s() expects at least 1 arg", name);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects at least 1 arg", name);
}
- Value** args = ReadValueVarArgs(state, argc, argv);
- if (args == NULL) {
- return NULL;
+ std::unique_ptr<Value*, decltype(&free)> arg_values(ReadValueVarArgs(state, argc, argv), free);
+ if (arg_values == nullptr) {
+ return nullptr;
+ }
+ std::vector<std::unique_ptr<Value, decltype(&FreeValue)>> args;
+ for (int i = 0; i < argc; ++i) {
+ args.emplace_back(arg_values.get()[i], FreeValue);
}
if (args[0]->size < 0) {
return StringValue(strdup(""));
}
- uint8_t digest[SHA_DIGEST_SIZE];
- SHA_hash(args[0]->data, args[0]->size, digest);
- FreeValue(args[0]);
+ uint8_t digest[SHA_DIGEST_LENGTH];
+ SHA1(reinterpret_cast<uint8_t*>(args[0]->data), args[0]->size, digest);
if (argc == 1) {
return StringValue(PrintSha1(digest));
}
int i;
- uint8_t* arg_digest = malloc(SHA_DIGEST_SIZE);
+ uint8_t arg_digest[SHA_DIGEST_LENGTH];
for (i = 1; i < argc; ++i) {
if (args[i]->type != VAL_STRING) {
printf("%s(): arg %d is not a string; skipping",
@@ -1317,48 +1391,43 @@ Value* Sha1CheckFn(const char* name, State* state, int argc, Expr* argv[]) {
// Warn about bad args and skip them.
printf("%s(): error parsing \"%s\" as sha-1; skipping",
name, args[i]->data);
- } else if (memcmp(digest, arg_digest, SHA_DIGEST_SIZE) == 0) {
+ } else if (memcmp(digest, arg_digest, SHA_DIGEST_LENGTH) == 0) {
break;
}
- FreeValue(args[i]);
}
if (i >= argc) {
// Didn't match any of the hex strings; return false.
return StringValue(strdup(""));
}
- // Found a match; free all the remaining arguments and return the
- // matched one.
- int j;
- for (j = i+1; j < argc; ++j) {
- FreeValue(args[j]);
- }
- return args[i];
+ // Found a match.
+ return args[i].release();
}
// Read a local file and return its contents (the Value* returned
// is actually a FileContents*).
Value* ReadFileFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc != 1) {
- return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc);
}
char* filename;
if (ReadArgs(state, argv, 1, &filename) < 0) return NULL;
- Value* v = malloc(sizeof(Value));
+ Value* v = static_cast<Value*>(malloc(sizeof(Value)));
+ if (v == nullptr) {
+ return nullptr;
+ }
v->type = VAL_BLOB;
+ v->size = -1;
+ v->data = nullptr;
FileContents fc;
if (LoadFileContents(filename, &fc) != 0) {
- free(filename);
- v->size = -1;
- v->data = NULL;
- free(fc.data);
- return v;
+ v->data = static_cast<char*>(malloc(fc.data.size()));
+ if (v->data != nullptr) {
+ memcpy(v->data, fc.data.data(), fc.data.size());
+ v->size = fc.data.size();
+ }
}
-
- v->size = fc.size;
- v->data = (char*)fc.data;
-
free(filename);
return v;
}
@@ -1374,7 +1443,7 @@ Value* ReadFileFn(const char* name, State* state, int argc, Expr* argv[]) {
// partition.
Value* RebootNowFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc != 2) {
- return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %d", name, argc);
}
char* filename;
@@ -1387,7 +1456,7 @@ Value* RebootNowFn(const char* name, State* state, int argc, Expr* argv[]) {
memset(buffer, 0, sizeof(((struct bootloader_message*)0)->command));
FILE* f = fopen(filename, "r+b");
fseek(f, offsetof(struct bootloader_message, command), SEEK_SET);
- fwrite(buffer, sizeof(((struct bootloader_message*)0)->command), 1, f);
+ ota_fwrite(buffer, sizeof(((struct bootloader_message*)0)->command), 1, f);
fclose(f);
free(filename);
@@ -1400,7 +1469,7 @@ Value* RebootNowFn(const char* name, State* state, int argc, Expr* argv[]) {
sleep(5);
free(property);
- ErrorAbort(state, "%s() failed to reboot", name);
+ ErrorAbort(state, kRebootFailure, "%s() failed to reboot", name);
return NULL;
}
@@ -1416,7 +1485,7 @@ Value* RebootNowFn(const char* name, State* state, int argc, Expr* argv[]) {
// bytes.
Value* SetStageFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc != 2) {
- return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %d", name, argc);
}
char* filename;
@@ -1435,7 +1504,7 @@ Value* SetStageFn(const char* name, State* state, int argc, Expr* argv[]) {
to_write = max_size;
stagestr[max_size-1] = 0;
}
- fwrite(stagestr, to_write, 1, f);
+ ota_fwrite(stagestr, to_write, 1, f);
fclose(f);
free(stagestr);
@@ -1446,7 +1515,7 @@ Value* SetStageFn(const char* name, State* state, int argc, Expr* argv[]) {
// is the block device for the misc partition.
Value* GetStageFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc != 1) {
- return ErrorAbort(state, "%s() expects 1 arg, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 1 arg, got %d", name, argc);
}
char* filename;
@@ -1455,7 +1524,7 @@ Value* GetStageFn(const char* name, State* state, int argc, Expr* argv[]) {
char buffer[sizeof(((struct bootloader_message*)0)->stage)];
FILE* f = fopen(filename, "rb");
fseek(f, offsetof(struct bootloader_message, stage), SEEK_SET);
- fread(buffer, sizeof(buffer), 1, f);
+ ota_fread(buffer, sizeof(buffer), 1, f);
fclose(f);
buffer[sizeof(buffer)-1] = '\0';
@@ -1464,28 +1533,29 @@ Value* GetStageFn(const char* name, State* state, int argc, Expr* argv[]) {
Value* WipeBlockDeviceFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc != 2) {
- return ErrorAbort(state, "%s() expects 2 args, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %d", name, argc);
}
char* filename;
char* len_str;
if (ReadArgs(state, argv, 2, &filename, &len_str) < 0) return NULL;
- size_t len = strtoull(len_str, NULL, 0);
- int fd = open(filename, O_WRONLY, 0644);
+ size_t len;
+ android::base::ParseUint(len_str, &len);
+ int fd = ota_open(filename, O_WRONLY, 0644);
int success = wipe_block_device(fd, len);
free(filename);
free(len_str);
- close(fd);
+ ota_close(fd);
return StringValue(strdup(success ? "t" : ""));
}
Value* EnableRebootFn(const char* name, State* state, int argc, Expr* argv[]) {
if (argc != 0) {
- return ErrorAbort(state, "%s() expects no args, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects no args, got %d", name, argc);
}
UpdaterInfo* ui = (UpdaterInfo*)(state->cookie);
fprintf(ui->cmd_pipe, "enable_reboot\n");
@@ -1495,23 +1565,22 @@ Value* EnableRebootFn(const char* name, State* state, int argc, Expr* argv[]) {
Value* Tune2FsFn(const char* name, State* state, int argc, Expr* argv[]) {
#ifdef HAVE_LIBTUNE2FS
if (argc == 0) {
- return ErrorAbort(state, "%s() expects args, got %d", name, argc);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() expects args, got %d", name, argc);
}
char** args = ReadVarArgs(state, argc, argv);
if (args == NULL) {
- return ErrorAbort(state, "%s() could not read args", name);
+ return ErrorAbort(state, kArgsParsingFailure, "%s() could not read args", name);
}
- int i;
- char** args2 = malloc(sizeof(char*) * (argc+1));
+ char** args2 = reinterpret_cast<char**>(malloc(sizeof(char*) * (argc+1)));
// Tune2fs expects the program name as its args[0]
args2[0] = strdup(name);
- for (i = 0; i < argc; ++i) {
+ for (int i = 0; i < argc; ++i) {
args2[i + 1] = args[i];
}
int result = tune2fs_main(argc + 1, args2);
- for (i = 0; i < argc; ++i) {
+ for (int i = 0; i < argc; ++i) {
free(args[i]);
}
free(args);
@@ -1519,7 +1588,8 @@ Value* Tune2FsFn(const char* name, State* state, int argc, Expr* argv[]) {
free(args2[0]);
free(args2);
if (result != 0) {
- return ErrorAbort(state, "%s() returned error code %d", name, result);
+ return ErrorAbort(state, kTune2FsFailure, "%s() returned error code %d",
+ name, result);
}
return StringValue(strdup("t"));
#else
diff --git a/updater/install.h b/updater/install.h
index 659c8b41c..70e343404 100644
--- a/updater/install.h
+++ b/updater/install.h
@@ -19,6 +19,9 @@
void RegisterInstallFunctions();
+// uiPrintf function prints msg to screen as well as logs
+void uiPrintf(State* state, const char* format, ...);
+
static int make_parents(char* name);
#endif
diff --git a/updater/updater.c b/updater/updater.cpp
index 479675da7..452c3530f 100644
--- a/updater/updater.c
+++ b/updater/updater.cpp
@@ -26,6 +26,7 @@
#include "blockimg.h"
#include "minzip/Zip.h"
#include "minzip/SysUtil.h"
+#include "config.h"
// Generated by the makefile, this function defines the
// RegisterDeviceExtensions() function, which calls all the
@@ -38,6 +39,8 @@
#define SELINUX_CONTEXTS_ZIP "file_contexts"
#define SELINUX_CONTEXTS_TMP "/tmp/file_contexts"
+extern bool have_eio_error;
+
struct selabel_handle *sehandle;
int main(int argc, char** argv) {
@@ -48,7 +51,7 @@ int main(int argc, char** argv) {
setbuf(stdout, NULL);
setbuf(stderr, NULL);
- if (argc != 4) {
+ if (argc != 4 && argc != 5) {
printf("unexpected number of arguments (%d)\n", argc);
return 1;
}
@@ -85,6 +88,7 @@ int main(int argc, char** argv) {
argv[3], strerror(err));
return 3;
}
+ ota_io_init(&za);
const ZipEntry* script_entry = mzFindZipEntry(&za, SCRIPT_NAME);
if (script_entry == NULL) {
@@ -92,7 +96,7 @@ int main(int argc, char** argv) {
return 4;
}
- char* script = malloc(script_entry->uncompLen+1);
+ char* script = reinterpret_cast<char*>(malloc(script_entry->uncompLen+1));
if (!mzReadZipEntry(&za, script_entry, script, script_entry->uncompLen)) {
printf("failed to read script from package\n");
return 5;
@@ -166,7 +170,20 @@ int main(int argc, char** argv) {
state.script = script;
state.errmsg = NULL;
+ if (argc == 5) {
+ if (strcmp(argv[4], "retry") == 0) {
+ state.is_retry = true;
+ } else {
+ printf("unexpected argument: %s", argv[4]);
+ }
+ }
+
char* result = Evaluate(&state, root);
+
+ if (have_eio_error) {
+ fprintf(cmd_pipe, "retry_update\n");
+ }
+
if (result == NULL) {
if (state.errmsg == NULL) {
printf("script aborted (no error message)\n");
@@ -175,11 +192,28 @@ int main(int argc, char** argv) {
printf("script aborted: %s\n", state.errmsg);
char* line = strtok(state.errmsg, "\n");
while (line) {
+ // Parse the error code in abort message.
+ // Example: "E30: This package is for bullhead devices."
+ if (*line == 'E') {
+ if (sscanf(line, "E%u: ", &state.error_code) != 1) {
+ printf("Failed to parse error code: [%s]\n", line);
+ }
+ }
fprintf(cmd_pipe, "ui_print %s\n", line);
line = strtok(NULL, "\n");
}
fprintf(cmd_pipe, "ui_print\n");
}
+
+ if (state.error_code != kNoError) {
+ fprintf(cmd_pipe, "log error: %d\n", state.error_code);
+ // Cause code should provide additional information about the abort;
+ // report only when an error exists.
+ if (state.cause_code != kNoCause) {
+ fprintf(cmd_pipe, "log cause: %d\n", state.cause_code);
+ }
+ }
+
free(state.errmsg);
return 7;
} else {