| /* |
| * fmap_from_fmd.c, tool to distill flashmap descriptors into raw FMAP sections |
| * |
| * Copyright (C) 2015 Google, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include "fmap_from_fmd.h" |
| |
| #include "common.h" |
| |
| #include <assert.h> |
| #include <string.h> |
| |
| static bool fmap_append_fmd_node(struct fmap **flashmap, |
| const struct flashmap_descriptor *section, |
| unsigned absolute_watermark) { |
| if (strlen(section->name) >= FMAP_STRLEN) { |
| ERROR("Section name ('%s') exceeds %d character FMAP format limit\n", |
| section->name, FMAP_STRLEN - 1); |
| return false; |
| } |
| |
| absolute_watermark += section->offset; |
| |
| if (fmap_append_area(flashmap, absolute_watermark, section->size, |
| (uint8_t *)section->name, 0) < 0) { |
| ERROR("Failed to insert section '%s' into FMAP\n", |
| section->name); |
| return false; |
| } |
| |
| fmd_foreach_child(subsection, section) { |
| if (!fmap_append_fmd_node(flashmap, subsection, |
| absolute_watermark)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| struct fmap *fmap_from_fmd(const struct flashmap_descriptor *desc) |
| { |
| assert(desc); |
| assert(desc->size_known); |
| |
| if (strlen(desc->name) >= FMAP_STRLEN) { |
| ERROR("Image name ('%s') exceeds %d character FMAP header limit\n", |
| desc->name, FMAP_STRLEN - 1); |
| return NULL; |
| } |
| |
| struct fmap *fmap = fmap_create(desc->offset_known ? desc->offset : 0, |
| desc->size, (uint8_t *)desc->name); |
| if (!fmap) { |
| ERROR("Failed to allocate FMAP header\n"); |
| return fmap; |
| } |
| |
| fmd_foreach_child(real_section, desc) { |
| if (!fmap_append_fmd_node(&fmap, real_section, 0)) { |
| fmap_destroy(fmap); |
| return NULL; |
| } |
| } |
| |
| return fmap; |
| } |