block.c (6f2ef80b0ce87d258b4736471a81747da2a7a881) block.c (122860bae7c3a3cf45f9f2dedddb0e2492f09888)
1/*
2 * QEMU System Emulator block driver
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights

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5086/**
5087 * Return length in bytes on success, -errno on error.
5088 * The length is always a multiple of BDRV_SECTOR_SIZE.
5089 */
5090int64_t bdrv_getlength(BlockDriverState *bs)
5091{
5092 int64_t ret = bdrv_nb_sectors(bs);
5093
1/*
2 * QEMU System Emulator block driver
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights

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5086/**
5087 * Return length in bytes on success, -errno on error.
5088 * The length is always a multiple of BDRV_SECTOR_SIZE.
5089 */
5090int64_t bdrv_getlength(BlockDriverState *bs)
5091{
5092 int64_t ret = bdrv_nb_sectors(bs);
5093
5094 ret = ret > INT64_MAX / BDRV_SECTOR_SIZE ? -EFBIG : ret;
5095 return ret < 0 ? ret : ret * BDRV_SECTOR_SIZE;
5094 if (ret < 0) {
5095 return ret;
5096 }
5097 if (ret > INT64_MAX / BDRV_SECTOR_SIZE) {
5098 return -EFBIG;
5099 }
5100 return ret * BDRV_SECTOR_SIZE;
5096}
5097
5098/* return 0 as number of sectors if no device present or error */
5099void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr)
5100{
5101 int64_t nb_sectors = bdrv_nb_sectors(bs);
5102
5103 *nb_sectors_ptr = nb_sectors < 0 ? 0 : nb_sectors;

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5102
5103/* return 0 as number of sectors if no device present or error */
5104void bdrv_get_geometry(BlockDriverState *bs, uint64_t *nb_sectors_ptr)
5105{
5106 int64_t nb_sectors = bdrv_nb_sectors(bs);
5107
5108 *nb_sectors_ptr = nb_sectors < 0 ? 0 : nb_sectors;

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