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/*
* Copyright (C) 2008 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 <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include "cutils/log.h"
#include "flashutils.h"
#ifdef LOG_TAG
#undef LOG_TAG
#endif
#if 0
#define LOG_TAG "dump_image"
#define BLOCK_SIZE 2048
#define SPARE_SIZE (BLOCK_SIZE >> 5)
static int die(const char *msg, ...) {
int err = errno;
va_list args;
va_start(args, msg);
char buf[1024];
vsnprintf(buf, sizeof(buf), msg, args);
va_end(args);
if (err != 0) {
strlcat(buf, ": ", sizeof(buf));
strlcat(buf, strerror(err), sizeof(buf));
}
fprintf(stderr, "%s\n", buf);
return 1;
}
/* Read a flash partition and write it to an image file. */
int dump_image(char* partition_name, char* filename, dump_image_callback callback) {
MtdReadContext *in;
const MtdPartition *partition;
char buf[BLOCK_SIZE + SPARE_SIZE];
size_t partition_size;
size_t read_size;
size_t total;
int fd;
int wrote;
int len;
if (mtd_scan_partitions() <= 0)
return die("error scanning partitions");
partition = mtd_find_partition_by_name(partition_name);
if (partition == NULL)
return die("can't find %s partition", partition_name);
if (mtd_partition_info(partition, &partition_size, NULL, NULL)) {
return die("can't get info of partition %s", partition_name);
}
if (!strcmp(filename, "-")) {
fd = fileno(stdout);
}
else {
fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC, 0666);
}
if (fd < 0)
return die("error opening %s", filename);
in = mtd_read_partition(partition);
if (in == NULL) {
close(fd);
unlink(filename);
return die("error opening %s: %s\n", partition_name, strerror(errno));
}
total = 0;
while ((len = mtd_read_data(in, buf, BLOCK_SIZE)) > 0) {
wrote = write(fd, buf, len);
if (wrote != len) {
close(fd);
unlink(filename);
return die("error writing %s", filename);
}
total += BLOCK_SIZE;
if (callback != NULL)
callback(total, partition_size);
}
mtd_read_close(in);
if (close(fd)) {
unlink(filename);
return die("error closing %s", filename);
}
return 0;
}
int main(int argc, char **argv)
{
ssize_t (*read_func) (MtdReadContext *, char *, size_t);
MtdReadContext *in;
const MtdPartition *partition;
char buf[BLOCK_SIZE + SPARE_SIZE];
size_t partition_size;
size_t read_size;
size_t total;
int fd;
int wrote;
int len;
if (argc != 3) {
fprintf(stderr, "usage: %s partition file.img\n", argv[0]);
return 2;
}
return dump_image(argv[1], argv[2], NULL);
}
#endif
int main(int argc, char **argv)
{
if (argc != 3) {
fprintf(stderr, "usage: %s partition file.img\n", argv[0]);
return 2;
}
return backup_raw_partition(NULL, argv[1], argv[2]);
}
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