83 lines
2.1 KiB
C
83 lines
2.1 KiB
C
/*
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* Copyright (C) 2008 The Android Open Source Project
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* Portions Copyright (C) 2010 Magnus Eriksson <packetlss@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <mtd/mtd-user.h>
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#include "cutils/log.h"
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#include "mtdutils.h"
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#ifdef LOG_TAG
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#undef LOG_TAG
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#endif
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#define LOG_TAG "erase_flash"
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void die(const char *msg, ...) {
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int err = errno;
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va_list args;
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va_start(args, msg);
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char buf[1024];
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vsnprintf(buf, sizeof(buf), msg, args);
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va_end(args);
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if (err != 0) {
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strlcat(buf, ": ", sizeof(buf));
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strlcat(buf, strerror(err), sizeof(buf));
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}
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fprintf(stderr, "%s\n", buf);
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LOGE("%s\n", buf);
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exit(1);
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}
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/* Erase a mtd partition */
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int main(int argc, char **argv) {
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MtdWriteContext *out;
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size_t erased;
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size_t total_size;
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size_t erase_size;
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if (argc != 2) {
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fprintf(stderr, "usage: %s <partition>\n", argv[0]);
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return 2;
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}
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if (mtd_scan_partitions() <= 0) die("error scanning partitions");
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const MtdPartition *partition = mtd_find_partition_by_name(argv[1]);
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if (partition == NULL) die("can't find %s partition", argv[1]);
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out = mtd_write_partition(partition);
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if (out == NULL) die("could not estabilish write context for %s", argv[1]);
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// do the actual erase, -1 = full partition erase
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erased = mtd_erase_blocks(out, -1);
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// erased = bytes erased, if zero, something borked
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if (!erased) die("error erasing %s", argv[1]);
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return 0;
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}
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