53e1b68390
This follows what the kernel is doing, c.f. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5fd54ace4721fc5ce2bb5aef6318fcf17f421460.
43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2016 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "macro.h"
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typedef struct LoopDevice LoopDevice;
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/* Some helpers for setting up loopback block devices */
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struct LoopDevice {
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int fd;
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int nr;
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char *node;
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bool relinquished;
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};
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int loop_device_make(int fd, int open_flags, LoopDevice **ret);
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int loop_device_make_by_path(const char *path, int open_flags, LoopDevice **ret);
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LoopDevice* loop_device_unref(LoopDevice *d);
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DEFINE_TRIVIAL_CLEANUP_FUNC(LoopDevice*, loop_device_unref);
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void loop_device_relinquish(LoopDevice *d);
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