From 51a0e82eb29a6dfc79f93479883383fbdbf8bcc2 Mon Sep 17 00:00:00 2001
From: Dees_Troy <dees_troy@teamw.in>
Date: Wed, 5 Sep 2012 15:24:24 -0400
Subject: TWRP-ify AOSP code

Pull in most TWRP sources
Stub out partition management code
Make it compile -- probably will not boot
Kind of a mess but have to start somewhere
---
 flashutils/dump_image.c | 150 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 150 insertions(+)
 create mode 100644 flashutils/dump_image.c

(limited to 'flashutils/dump_image.c')

diff --git a/flashutils/dump_image.c b/flashutils/dump_image.c
new file mode 100644
index 000000000..64c4e1c42
--- /dev/null
+++ b/flashutils/dump_image.c
@@ -0,0 +1,150 @@
+/*
+ * 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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