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88 lines
2.5 KiB
88 lines
2.5 KiB
/*
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* Copyright (c) 2016-2019 Cyril Hrubis <chrubis@suse.cz>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef TST_DEVICE_H__
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#define TST_DEVICE_H__
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#include <unistd.h>
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struct tst_device {
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const char *dev;
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const char *fs_type;
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};
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/*
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* Automatically initialized if test.needs_device is set.
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*/
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extern struct tst_device *tst_device;
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/*
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* Just like umount() but retries several times on failure.
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* @path: Path to umount
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*/
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int tst_umount(const char *path);
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/*
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* Clears a first few blocks of the device. This is needed when device has
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* already been formatted with a filesystems, subset of mkfs.foo utils aborts
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* the operation if it finds a filesystem signature there.
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*
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* Note that this is called from tst_mkfs() automatically, so you probably will
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* not need to use this from the test yourself.
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*/
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int tst_clear_device(const char *dev);
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/*
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* Finds a free loop device for use and returns the free loopdev minor(-1 for no
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* free loopdev). If path is non-NULL, it will be filled with free loopdev path.
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*
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*/
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int tst_find_free_loopdev(const char *path, size_t path_len);
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/*
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* Attaches a file to a loop device.
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*
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* @dev_path Path to the loop device e.g. /dev/loop0
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* @file_path Path to a file e.g. disk.img
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* @return Zero on success, non-zero otherwise.
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*/
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int tst_attach_device(const char *dev_path, const char *file_path);
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/*
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* Detaches a file from a loop device.
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*
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* @dev_path Path to the loop device e.g. /dev/loop0
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* @return Zero on succes, non-zero otherwise.
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*/
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int tst_detach_device(const char *dev_path);
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/*
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* To avoid FS deferred IO metadata/cache interference, so we do syncfs
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* simply before the tst_dev_bytes_written invocation. For easy to use,
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* we create this inline function tst_dev_sync.
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*/
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int tst_dev_sync(int fd);
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/*
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* Reads test block device stat file and returns the bytes written since the
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* last call of this function.
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* @dev: test block device
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*/
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unsigned long tst_dev_bytes_written(const char *dev);
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#endif /* TST_DEVICE_H__ */
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