/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <android_cmds.h>
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#include <common.h>
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#include <part.h>
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/**
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* part_get_info_by_dev_and_name - Parse a device number and partition name
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* string in the form of "device_num;partition_name", for example "0;misc".
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* If the partition is found, sets dev_desc and part_info accordingly with the
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* information of the partition with the given partition_name.
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*
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* @dev_iface: Device interface.
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* @dev_part_str: Input string argument, like "0;misc".
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* @dev_desc: Place to store the device description pointer.
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* @part_info: Place to store the partition information.
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* @return 0 on success, or -1 on error
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*/
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static int part_get_info_by_dev_and_name(const char *dev_iface,
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const char *dev_part_str,
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struct blk_desc **dev_desc,
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disk_partition_t *part_info)
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{
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char *ep;
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const char *part_str;
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int dev_num;
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part_str = strchr(dev_part_str, ';');
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if (!part_str || part_str == dev_part_str)
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return -1;
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dev_num = simple_strtoul(dev_part_str, &ep, 16);
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if (ep != part_str) {
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/* Not all the first part before the ; was parsed. */
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return -1;
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}
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part_str++;
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*dev_desc = blk_get_dev(dev_iface, dev_num);
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if (!*dev_desc) {
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printf("Could not find %s %d\n", dev_iface, dev_num);
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return -1;
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}
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if (part_get_info_by_name(*dev_desc, part_str, part_info) < 0) {
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printf("Could not find \"%s\" partition\n", part_str);
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return -1;
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}
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return 0;
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}
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int part_get_info_by_dev_and_name_or_num(const char *dev_iface,
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const char *dev_part_str,
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struct blk_desc **dev_desc,
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disk_partition_t *part_info) {
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/* Split the part_name if passed as "$dev_num;part_name". */
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if (!part_get_info_by_dev_and_name(dev_iface, dev_part_str,
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dev_desc, part_info))
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return 0;
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/* Couldn't lookup by name, try looking up the partition description
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* directly.
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*/
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if (blk_get_device_part_str(dev_iface, dev_part_str,
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dev_desc, part_info, 1) < 0) {
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printf("Couldn't find partition %s %s\n",
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dev_iface, dev_part_str);
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return -1;
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}
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return 0;
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}
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