Exemple #1
0
/**
 * Reads and parses one area header.  This function does not read the area's
 * contents.
 *
 * @param out_is_scratch        On success, 0 or 1 gets written here,
 *                                  indicating whether the area is a scratch
 *                                  area.
 * @param area_offset           The flash offset of the start of the area.
 *
 * @return                      0 on success;
 *                              nonzero on failure.
 */
static int
nffs_restore_detect_one_area(uint8_t flash_id, uint32_t area_offset,
                             struct nffs_disk_area *out_disk_area)
{
    int rc;

    rc = hal_flash_read(flash_id, area_offset, out_disk_area,
                        sizeof *out_disk_area);
    if (rc != 0) {
        return FS_HW_ERROR;
    }

    if (!nffs_area_magic_is_set(out_disk_area)) {
        return FS_ECORRUPT;
    }

    return 0;
}
Exemple #2
0
/**
 * Reads and parses one area header.  This function does not read the area's
 * contents.
 *
 * @param out_is_scratch        On success, 0 or 1 gets written here,
 *                                  indicating whether the area is a scratch
 *                                  area.
 * @param area_offset           The flash offset of the start of the area.
 *
 * @return                      0 on success;
 *                              nonzero on failure.
 */
static int
nffs_restore_detect_one_area(uint8_t flash_id, uint32_t area_offset,
                             struct nffs_disk_area *out_disk_area)
{
    int rc;

    STATS_INC(nffs_stats, nffs_readcnt_detect);
    rc = hal_flash_read(flash_id, area_offset, out_disk_area,
                        sizeof *out_disk_area);
    if (rc != 0) {
        return FS_EHW;
    }

    if (!nffs_area_magic_is_set(out_disk_area)) {
        return FS_ECORRUPT;
    }

    if (!nffs_area_is_current_version(out_disk_area)) {
        return FS_EUNEXP;
    }

    return 0;
}