17 use std::fs;
18 use std::os::unix::fs::MetadataExt;
47     fs::write(format!("/sys/block/{device_name}/queue/scheduler"), "none")  in clear_block_device_scheduler()
68         fs::read_to_string(format!("{sysfs_path}/class/block/{file_backing_device}/mq/0/nr_tags"))?;  in configure_block_device_queue_depth_with_sysfs()
71     fs::write(  in configure_block_device_queue_depth_with_sysfs()
97         fs::metadata(file_path).map_err(BlockDeviceError::InputFileMetadata)?.dev() as libc::dev_t;  in get_block_device_name()
101     let device_path = std::fs::canonicalize(format!("{sysfs_path}/dev/block/{major}:{minor}"))?;  in get_block_device_name()
131     for entry in fs::read_dir(format!("{sysfs_path}/block/{device_name}/slaves"))? {  in get_parent_block_device()
149     for entry in fs::read_dir(format!("{sysfs_path}/class/block"))? {  in partition_parent()
157         if fs::exists(format!("{sysfs_path}/class/block/{name}/{device_name}"))? {  in partition_parent()
166     use std::os::unix::fs::symlink;
189                         fs::create_dir_all(link.parent().unwrap()).unwrap();  in build()
194                         fs::create_dir_all(path.parent().unwrap()).unwrap();  in build()
195                         fs::write(path, content).unwrap();  in build()
198                         fs::create_dir_all(root.join(path.trim_start_matches("/"))).unwrap();  in build()
202                         let devnum = fs::metadata(file_path).unwrap().dev() as libc::dev_t;  in build()
207                         fs::create_dir_all(link.parent().unwrap()).unwrap();  in build()
288             fs::read_to_string(fake_fs.path().join("sys/class/block/loop97/queue/nr_requests"))  in configure_block_device_queue_depth()