block.c (7e0019a7196ebed177c95824875cf852e1a6f667) block.c (e24d813b29d3a478a9309078487efc8ce8599f22)
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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4005 return bdi.unallocated_blocks_are_zero;
4006 }
4007
4008 return false;
4009}
4010
4011bool bdrv_can_write_zeroes_with_unmap(BlockDriverState *bs)
4012{
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

--- 3996 unchanged lines hidden (view full) ---

4005 return bdi.unallocated_blocks_are_zero;
4006 }
4007
4008 return false;
4009}
4010
4011bool bdrv_can_write_zeroes_with_unmap(BlockDriverState *bs)
4012{
4013 BlockDriverInfo bdi;
4014
4015 if (!(bs->open_flags & BDRV_O_UNMAP)) {
4016 return false;
4017 }
4018
4013 if (!(bs->open_flags & BDRV_O_UNMAP)) {
4014 return false;
4015 }
4016
4019 if (bdrv_get_info(bs, &bdi) == 0) {
4020 return bdi.can_write_zeroes_with_unmap;
4021 }
4022
4023 return false;
4017 return bs->supported_zero_flags & BDRV_REQ_MAY_UNMAP;
4024}
4025
4026const char *bdrv_get_encrypted_filename(BlockDriverState *bs)
4027{
4028 if (bs->backing && bs->backing->bs->encrypted)
4029 return bs->backing_file;
4030 else if (bs->encrypted)
4031 return bs->filename;

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4019
4020const char *bdrv_get_encrypted_filename(BlockDriverState *bs)
4021{
4022 if (bs->backing && bs->backing->bs->encrypted)
4023 return bs->backing_file;
4024 else if (bs->encrypted)
4025 return bs->filename;

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