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/*
* Copyright (c) 2014-2016 Cyril Hrubis <chrubis@suse.cz>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef OLD_DEVICE_H__
#define OLD_DEVICE_H__
/*
* Returns filesystem type to be used for the testing. Unless your test is
* designed for specific filesystem you should use this function to the tested
* filesystem.
*
* If TST_DEV_FS_TYPE is set the function returns it's content,
* otherwise default fs type hardcoded in the library is returned.
*/
const char *tst_dev_fs_type(void);
/*
* Acquires test device.
*
* Can be used only once, i.e. you cannot get two different devices.
*
* Looks for LTP_DEV env variable first (which may be passed by the test
* driver or by a user) and returns just it's value if found.
*
* Otherwise creates a temp file and loop device.
*
* Note that you have to call tst_tmpdir() beforehand.
*
* Returns path to the device or NULL if it cannot be created.
* Call tst_release_device() when you're done.
*/
const char *tst_acquire_device_(void (cleanup_fn)(void), unsigned int size);
const char *tst_acquire_device__(unsigned int size);
static inline const char *tst_acquire_device(void (cleanup_fn)(void))
{
return tst_acquire_device_(cleanup_fn, 0);
}
/*
* Acquire a loop device with specified temp filename. This function allows
* you to acquire multiple devices at the same time. LTP_DEV is ignored.
* If you call this function directly, use tst_detach_device() to release
* the devices. tst_release_device() will not work correctly.
*
* The return value points to a static buffer and additional calls of
* tst_acquire_loop_device() or tst_acquire_device() will overwrite it.
*/
const char *tst_acquire_loop_device(unsigned int size, const char *filename);
/*
* @dev: device path returned by the tst_acquire_device()
*/
int tst_release_device(const char *dev);
/*
* Cleanup function for tst_acquire_loop_device(). If you have acquired
* a device using tst_acquire_device(), use tst_release_device() instead.
* @dev: device path returned by the tst_acquire_loop_device()
*/
int tst_detach_device(const char *dev);
/*
* Just like umount() but retries several times on failure.
* @path: Path to umount
*/
int tst_umount(const char *path);
#endif /* OLD_DEVICE_H__ */
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