109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (c) 2016-2019 Cyril Hrubis <chrubis@suse.cz>
|
|
*/
|
|
|
|
#ifndef TST_DEVICE_H__
|
|
#define TST_DEVICE_H__
|
|
|
|
#include <unistd.h>
|
|
|
|
struct tst_device {
|
|
const char *dev;
|
|
const char *fs_type;
|
|
};
|
|
|
|
/*
|
|
* Automatically initialized if test.needs_device is set.
|
|
*/
|
|
extern struct tst_device *tst_device;
|
|
|
|
/*
|
|
* Just like umount() but retries several times on failure.
|
|
* @path: Path to umount
|
|
*/
|
|
int tst_umount(const char *path);
|
|
|
|
/*
|
|
* Verifies if an earlier mount is successful or not.
|
|
* @path: Mount path to verify
|
|
*/
|
|
int tst_is_mounted(const char *path);
|
|
int tst_is_mounted_at_tmpdir(const char *path);
|
|
|
|
/*
|
|
* Clears a first few blocks of the device. This is needed when device has
|
|
* already been formatted with a filesystems, subset of mkfs.foo utils aborts
|
|
* the operation if it finds a filesystem signature there.
|
|
*
|
|
* Note that this is called from tst_mkfs() automatically, so you probably will
|
|
* not need to use this from the test yourself.
|
|
*/
|
|
int tst_clear_device(const char *dev);
|
|
|
|
/*
|
|
* Finds a free loop device for use and returns the free loopdev minor(-1 for no
|
|
* free loopdev). If path is non-NULL, it will be filled with free loopdev path.
|
|
*
|
|
*/
|
|
int tst_find_free_loopdev(const char *path, size_t path_len);
|
|
|
|
/*
|
|
* Attaches a file to a loop device.
|
|
*
|
|
* @dev_path Path to the loop device e.g. /dev/loop0
|
|
* @file_path Path to a file e.g. disk.img
|
|
* @return Zero on success, non-zero otherwise.
|
|
*/
|
|
int tst_attach_device(const char *dev_path, const char *file_path);
|
|
|
|
/*
|
|
* Detaches a file from a loop device fd.
|
|
*
|
|
* @dev_path Path to the loop device e.g. /dev/loop0
|
|
* @dev_fd a open fd for the loop device
|
|
* @return Zero on succes, non-zero otherwise.
|
|
*/
|
|
int tst_detach_device_by_fd(const char *dev_path, int dev_fd);
|
|
|
|
/*
|
|
* Detaches a file from a loop device.
|
|
*
|
|
* @dev_path Path to the loop device e.g. /dev/loop0
|
|
* @return Zero on succes, non-zero otherwise.
|
|
*
|
|
* Internally this function opens the device and calls
|
|
* tst_detach_device_by_fd(). If you keep device file descriptor open you
|
|
* have to call the by_fd() variant since having the device open twice will
|
|
* prevent it from being detached.
|
|
*/
|
|
int tst_detach_device(const char *dev_path);
|
|
|
|
/*
|
|
* To avoid FS deferred IO metadata/cache interference, so we do syncfs
|
|
* simply before the tst_dev_bytes_written invocation. For easy to use,
|
|
* we create this inline function tst_dev_sync.
|
|
*/
|
|
int tst_dev_sync(int fd);
|
|
|
|
/*
|
|
* Reads test block device stat file and returns the bytes written since the
|
|
* last call of this function.
|
|
* @dev: test block device
|
|
*/
|
|
unsigned long tst_dev_bytes_written(const char *dev);
|
|
|
|
/*
|
|
* Wipe the contents of given directory but keep the directory itself
|
|
*/
|
|
void tst_purge_dir(const char *path);
|
|
|
|
/*
|
|
* Find the file or path belongs to which block dev
|
|
* @path Path to find the backing dev
|
|
* @dev The block dev
|
|
*/
|
|
void tst_find_backing_dev(const char *path, char *dev);
|
|
|
|
#endif /* TST_DEVICE_H__ */
|