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statfs.rs
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statfs.rs
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//! Get filesystem statistics, non-portably
//!
//! See [`statvfs`](crate::sys::statvfs) for a portable alternative.
use std::fmt::{self, Debug};
use std::mem;
use std::os::unix::io::AsRawFd;
#[cfg(not(any(target_os = "linux", target_os = "android")))]
use std::ffi::CStr;
use crate::{NixPath, Result, errno::Errno};
/// Identifies a mounted file system
#[cfg(target_os = "android")]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub type fsid_t = libc::__fsid_t;
/// Identifies a mounted file system
#[cfg(not(target_os = "android"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub type fsid_t = libc::fsid_t;
/// Describes a mounted file system
#[derive(Clone, Copy)]
#[repr(transparent)]
pub struct Statfs(libc::statfs);
#[cfg(target_os = "freebsd")]
type fs_type_t = u32;
#[cfg(target_os = "android")]
type fs_type_t = libc::c_ulong;
#[cfg(all(target_os = "linux", target_arch = "s390x"))]
type fs_type_t = libc::c_uint;
#[cfg(all(target_os = "linux", target_env = "musl"))]
type fs_type_t = libc::c_ulong;
#[cfg(all(target_os = "linux", not(any(target_arch = "s390x", target_env = "musl"))))]
type fs_type_t = libc::__fsword_t;
/// Describes the file system type as known by the operating system.
#[cfg(any(
target_os = "freebsd",
target_os = "android",
all(target_os = "linux", target_arch = "s390x"),
all(target_os = "linux", target_env = "musl"),
all(target_os = "linux", not(any(target_arch = "s390x", target_env = "musl"))),
))]
#[derive(Eq, Copy, Clone, PartialEq, Debug)]
pub struct FsType(pub fs_type_t);
// These constants are defined without documentation in the Linux headers, so we
// can't very well document them here.
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const ADFS_SUPER_MAGIC: FsType = FsType(libc::ADFS_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const AFFS_SUPER_MAGIC: FsType = FsType(libc::AFFS_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const CODA_SUPER_MAGIC: FsType = FsType(libc::CODA_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const CRAMFS_MAGIC: FsType = FsType(libc::CRAMFS_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const EFS_SUPER_MAGIC: FsType = FsType(libc::EFS_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const EXT2_SUPER_MAGIC: FsType = FsType(libc::EXT2_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const EXT3_SUPER_MAGIC: FsType = FsType(libc::EXT3_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const EXT4_SUPER_MAGIC: FsType = FsType(libc::EXT4_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const HPFS_SUPER_MAGIC: FsType = FsType(libc::HPFS_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const HUGETLBFS_MAGIC: FsType = FsType(libc::HUGETLBFS_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const ISOFS_SUPER_MAGIC: FsType = FsType(libc::ISOFS_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const JFFS2_SUPER_MAGIC: FsType = FsType(libc::JFFS2_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const MINIX_SUPER_MAGIC: FsType = FsType(libc::MINIX_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const MINIX_SUPER_MAGIC2: FsType = FsType(libc::MINIX_SUPER_MAGIC2 as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const MINIX2_SUPER_MAGIC: FsType = FsType(libc::MINIX2_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const MINIX2_SUPER_MAGIC2: FsType = FsType(libc::MINIX2_SUPER_MAGIC2 as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const MSDOS_SUPER_MAGIC: FsType = FsType(libc::MSDOS_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const NCP_SUPER_MAGIC: FsType = FsType(libc::NCP_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const NFS_SUPER_MAGIC: FsType = FsType(libc::NFS_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const OPENPROM_SUPER_MAGIC: FsType = FsType(libc::OPENPROM_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const OVERLAYFS_SUPER_MAGIC: FsType = FsType(libc::OVERLAYFS_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const PROC_SUPER_MAGIC: FsType = FsType(libc::PROC_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const QNX4_SUPER_MAGIC: FsType = FsType(libc::QNX4_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const REISERFS_SUPER_MAGIC: FsType = FsType(libc::REISERFS_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const SMB_SUPER_MAGIC: FsType = FsType(libc::SMB_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const TMPFS_MAGIC: FsType = FsType(libc::TMPFS_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const USBDEVICE_SUPER_MAGIC: FsType = FsType(libc::USBDEVICE_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const CGROUP_SUPER_MAGIC: FsType = FsType(libc::CGROUP_SUPER_MAGIC as fs_type_t);
#[cfg(all(target_os = "linux", not(target_env = "musl")))]
#[allow(missing_docs)]
pub const CGROUP2_SUPER_MAGIC: FsType = FsType(libc::CGROUP2_SUPER_MAGIC as fs_type_t);
impl Statfs {
/// Magic code defining system type
#[cfg(not(any(
target_os = "openbsd",
target_os = "dragonfly",
target_os = "ios",
target_os = "macos"
)))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn filesystem_type(&self) -> FsType {
FsType(self.0.f_type)
}
/// Magic code defining system type
#[cfg(not(any(target_os = "linux", target_os = "android")))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn filesystem_type_name(&self) -> &str {
let c_str = unsafe { CStr::from_ptr(self.0.f_fstypename.as_ptr()) };
c_str.to_str().unwrap()
}
/// Optimal transfer block size
#[cfg(any(target_os = "ios", target_os = "macos"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn optimal_transfer_size(&self) -> i32 {
self.0.f_iosize
}
/// Optimal transfer block size
#[cfg(target_os = "openbsd")]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn optimal_transfer_size(&self) -> u32 {
self.0.f_iosize
}
/// Optimal transfer block size
#[cfg(all(target_os = "linux", target_arch = "s390x"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn optimal_transfer_size(&self) -> u32 {
self.0.f_bsize
}
/// Optimal transfer block size
#[cfg(any(
target_os = "android",
all(target_os = "linux", target_env = "musl")
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn optimal_transfer_size(&self) -> libc::c_ulong {
self.0.f_bsize
}
/// Optimal transfer block size
#[cfg(all(target_os = "linux", not(any(target_arch = "s390x", target_env = "musl"))))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn optimal_transfer_size(&self) -> libc::__fsword_t {
self.0.f_bsize
}
/// Optimal transfer block size
#[cfg(target_os = "dragonfly")]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn optimal_transfer_size(&self) -> libc::c_long {
self.0.f_iosize
}
/// Optimal transfer block size
#[cfg(target_os = "freebsd")]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn optimal_transfer_size(&self) -> u64 {
self.0.f_iosize
}
/// Size of a block
#[cfg(any(target_os = "ios", target_os = "macos", target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn block_size(&self) -> u32 {
self.0.f_bsize
}
/// Size of a block
// f_bsize on linux: https://github.com/torvalds/linux/blob/master/fs/nfs/super.c#L471
#[cfg(all(target_os = "linux", target_arch = "s390x"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn block_size(&self) -> u32 {
self.0.f_bsize
}
/// Size of a block
// f_bsize on linux: https://github.com/torvalds/linux/blob/master/fs/nfs/super.c#L471
#[cfg(all(target_os = "linux", target_env = "musl"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn block_size(&self) -> libc::c_ulong {
self.0.f_bsize
}
/// Size of a block
// f_bsize on linux: https://github.com/torvalds/linux/blob/master/fs/nfs/super.c#L471
#[cfg(all(target_os = "linux", not(any(target_arch = "s390x", target_env = "musl"))))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn block_size(&self) -> libc::__fsword_t {
self.0.f_bsize
}
/// Size of a block
#[cfg(target_os = "freebsd")]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn block_size(&self) -> u64 {
self.0.f_bsize
}
/// Size of a block
#[cfg(target_os = "android")]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn block_size(&self) -> libc::c_ulong {
self.0.f_bsize
}
/// Size of a block
#[cfg(target_os = "dragonfly")]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn block_size(&self) -> libc::c_long {
self.0.f_bsize
}
/// Maximum length of filenames
#[cfg(any(target_os = "freebsd", target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn maximum_name_length(&self) -> u32 {
self.0.f_namemax
}
/// Maximum length of filenames
#[cfg(all(target_os = "linux", target_arch = "s390x"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn maximum_name_length(&self) -> u32 {
self.0.f_namelen
}
/// Maximum length of filenames
#[cfg(all(target_os = "linux", target_env = "musl"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn maximum_name_length(&self) -> libc::c_ulong {
self.0.f_namelen
}
/// Maximum length of filenames
#[cfg(all(target_os = "linux", not(any(target_arch = "s390x", target_env = "musl"))))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn maximum_name_length(&self) -> libc::__fsword_t {
self.0.f_namelen
}
/// Maximum length of filenames
#[cfg(target_os = "android")]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn maximum_name_length(&self) -> libc::c_ulong {
self.0.f_namelen
}
/// Total data blocks in filesystem
#[cfg(any(
target_os = "ios",
target_os = "macos",
target_os = "android",
target_os = "freebsd",
target_os = "openbsd",
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn blocks(&self) -> u64 {
self.0.f_blocks
}
/// Total data blocks in filesystem
#[cfg(target_os = "dragonfly")]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn blocks(&self) -> libc::c_long {
self.0.f_blocks
}
/// Total data blocks in filesystem
#[cfg(all(target_os = "linux", any(target_env = "musl", all(target_arch = "x86_64", target_pointer_width = "32"))))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn blocks(&self) -> u64 {
self.0.f_blocks
}
/// Total data blocks in filesystem
#[cfg(not(any(
target_os = "ios",
target_os = "macos",
target_os = "android",
target_os = "freebsd",
target_os = "openbsd",
target_os = "dragonfly",
all(target_os = "linux", any(target_env = "musl", all(target_arch = "x86_64", target_pointer_width = "32")))
)))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn blocks(&self) -> libc::c_ulong {
self.0.f_blocks
}
/// Free blocks in filesystem
#[cfg(any(
target_os = "ios",
target_os = "macos",
target_os = "android",
target_os = "freebsd",
target_os = "openbsd",
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn blocks_free(&self) -> u64 {
self.0.f_bfree
}
/// Free blocks in filesystem
#[cfg(target_os = "dragonfly")]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn blocks_free(&self) -> libc::c_long {
self.0.f_bfree
}
/// Free blocks in filesystem
#[cfg(all(target_os = "linux", any(target_env = "musl", all(target_arch = "x86_64", target_pointer_width = "32"))))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn blocks_free(&self) -> u64 {
self.0.f_bfree
}
/// Free blocks in filesystem
#[cfg(not(any(
target_os = "ios",
target_os = "macos",
target_os = "android",
target_os = "freebsd",
target_os = "openbsd",
target_os = "dragonfly",
all(target_os = "linux", any(target_env = "musl", all(target_arch = "x86_64", target_pointer_width = "32")))
)))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn blocks_free(&self) -> libc::c_ulong {
self.0.f_bfree
}
/// Free blocks available to unprivileged user
#[cfg(any(target_os = "ios", target_os = "macos", target_os = "android"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn blocks_available(&self) -> u64 {
self.0.f_bavail
}
/// Free blocks available to unprivileged user
#[cfg(target_os = "dragonfly")]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn blocks_available(&self) -> libc::c_long {
self.0.f_bavail
}
/// Free blocks available to unprivileged user
#[cfg(any(target_os = "freebsd", target_os = "openbsd"))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn blocks_available(&self) -> i64 {
self.0.f_bavail
}
/// Free blocks available to unprivileged user
#[cfg(all(target_os = "linux", any(target_env = "musl", all(target_arch = "x86_64", target_pointer_width = "32"))))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn blocks_available(&self) -> u64 {
self.0.f_bavail
}
/// Free blocks available to unprivileged user
#[cfg(not(any(
target_os = "ios",
target_os = "macos",
target_os = "android",
target_os = "freebsd",
target_os = "openbsd",
target_os = "dragonfly",
all(target_os = "linux", any(target_env = "musl", all(target_arch = "x86_64", target_pointer_width = "32")))
)))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn blocks_available(&self) -> libc::c_ulong {
self.0.f_bavail
}
/// Total file nodes in filesystem
#[cfg(any(
target_os = "ios",
target_os = "macos",
target_os = "android",
target_os = "freebsd",
target_os = "openbsd",
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn files(&self) -> u64 {
self.0.f_files
}
/// Total file nodes in filesystem
#[cfg(target_os = "dragonfly")]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn files(&self) -> libc::c_long {
self.0.f_files
}
/// Total file nodes in filesystem
#[cfg(all(target_os = "linux", any(target_env = "musl", all(target_arch = "x86_64", target_pointer_width = "32"))))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn files(&self) -> libc::fsfilcnt_t {
self.0.f_files
}
/// Total file nodes in filesystem
#[cfg(not(any(
target_os = "ios",
target_os = "macos",
target_os = "android",
target_os = "freebsd",
target_os = "openbsd",
target_os = "dragonfly",
all(target_os = "linux", any(target_env = "musl", all(target_arch = "x86_64", target_pointer_width = "32")))
)))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn files(&self) -> libc::c_ulong {
self.0.f_files
}
/// Free file nodes in filesystem
#[cfg(any(
target_os = "android",
target_os = "ios",
target_os = "macos",
target_os = "openbsd"
))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn files_free(&self) -> u64 {
self.0.f_ffree
}
/// Free file nodes in filesystem
#[cfg(target_os = "dragonfly")]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn files_free(&self) -> libc::c_long {
self.0.f_ffree
}
/// Free file nodes in filesystem
#[cfg(target_os = "freebsd")]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn files_free(&self) -> i64 {
self.0.f_ffree
}
/// Free file nodes in filesystem
#[cfg(all(target_os = "linux", any(target_env = "musl", all(target_arch = "x86_64", target_pointer_width = "32"))))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn files_free(&self) -> libc::fsfilcnt_t {
self.0.f_ffree
}
/// Free file nodes in filesystem
#[cfg(not(any(
target_os = "ios",
target_os = "macos",
target_os = "android",
target_os = "freebsd",
target_os = "openbsd",
target_os = "dragonfly",
all(target_os = "linux", any(target_env = "musl", all(target_arch = "x86_64", target_pointer_width = "32")))
)))]
#[cfg_attr(docsrs, doc(cfg(all())))]
pub fn files_free(&self) -> libc::c_ulong {
self.0.f_ffree
}
/// Filesystem ID
pub fn filesystem_id(&self) -> fsid_t {
self.0.f_fsid
}
}
impl Debug for Statfs {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct("Statfs")
.field("optimal_transfer_size", &self.optimal_transfer_size())
.field("block_size", &self.block_size())
.field("blocks", &self.blocks())
.field("blocks_free", &self.blocks_free())
.field("blocks_available", &self.blocks_available())
.field("files", &self.files())
.field("files_free", &self.files_free())
.field("filesystem_id", &self.filesystem_id())
.finish()
}
}
/// Describes a mounted file system.
///
/// The result is OS-dependent. For a portable alternative, see
/// [`statvfs`](crate::sys::statvfs::statvfs).
///
/// # Arguments
///
/// `path` - Path to any file within the file system to describe
pub fn statfs<P: ?Sized + NixPath>(path: &P) -> Result<Statfs> {
unsafe {
let mut stat = mem::MaybeUninit::<libc::statfs>::uninit();
let res = path.with_nix_path(|path| libc::statfs(path.as_ptr(), stat.as_mut_ptr()))?;
Errno::result(res).map(|_| Statfs(stat.assume_init()))
}
}
/// Describes a mounted file system.
///
/// The result is OS-dependent. For a portable alternative, see
/// [`fstatvfs`](crate::sys::statvfs::fstatvfs).
///
/// # Arguments
///
/// `fd` - File descriptor of any open file within the file system to describe
pub fn fstatfs<T: AsRawFd>(fd: &T) -> Result<Statfs> {
unsafe {
let mut stat = mem::MaybeUninit::<libc::statfs>::uninit();
Errno::result(libc::fstatfs(fd.as_raw_fd(), stat.as_mut_ptr()))
.map(|_| Statfs(stat.assume_init()))
}
}
#[cfg(test)]
mod test {
use std::fs::File;
use crate::sys::statfs::*;
use crate::sys::statvfs::*;
use std::path::Path;
#[test]
fn statfs_call() {
check_statfs("/tmp");
check_statfs("/dev");
check_statfs("/run");
check_statfs("/");
}
#[test]
fn fstatfs_call() {
check_fstatfs("/tmp");
check_fstatfs("/dev");
check_fstatfs("/run");
check_fstatfs("/");
}
fn check_fstatfs(path: &str) {
if !Path::new(path).exists() {
return;
}
let vfs = statvfs(path.as_bytes()).unwrap();
let file = File::open(path).unwrap();
let fs = fstatfs(&file).unwrap();
assert_fs_equals(fs, vfs);
}
fn check_statfs(path: &str) {
if !Path::new(path).exists() {
return;
}
let vfs = statvfs(path.as_bytes()).unwrap();
let fs = statfs(path.as_bytes()).unwrap();
assert_fs_equals(fs, vfs);
}
fn assert_fs_equals(fs: Statfs, vfs: Statvfs) {
assert_eq!(fs.files() as u64, vfs.files() as u64);
assert_eq!(fs.blocks() as u64, vfs.blocks() as u64);
assert_eq!(fs.block_size() as u64, vfs.fragment_size() as u64);
}
// This test is ignored because files_free/blocks_free can change after statvfs call and before
// statfs call.
#[test]
#[ignore]
fn statfs_call_strict() {
check_statfs_strict("/tmp");
check_statfs_strict("/dev");
check_statfs_strict("/run");
check_statfs_strict("/");
}
// This test is ignored because files_free/blocks_free can change after statvfs call and before
// fstatfs call.
#[test]
#[ignore]
fn fstatfs_call_strict() {
check_fstatfs_strict("/tmp");
check_fstatfs_strict("/dev");
check_fstatfs_strict("/run");
check_fstatfs_strict("/");
}
fn check_fstatfs_strict(path: &str) {
if !Path::new(path).exists() {
return;
}
let vfs = statvfs(path.as_bytes());
let file = File::open(path).unwrap();
let fs = fstatfs(&file);
assert_fs_equals_strict(fs.unwrap(), vfs.unwrap())
}
fn check_statfs_strict(path: &str) {
if !Path::new(path).exists() {
return;
}
let vfs = statvfs(path.as_bytes());
let fs = statfs(path.as_bytes());
assert_fs_equals_strict(fs.unwrap(), vfs.unwrap())
}
fn assert_fs_equals_strict(fs: Statfs, vfs: Statvfs) {
assert_eq!(fs.files_free() as u64, vfs.files_free() as u64);
assert_eq!(fs.blocks_free() as u64, vfs.blocks_free() as u64);
assert_eq!(fs.blocks_available() as u64, vfs.blocks_available() as u64);
assert_eq!(fs.files() as u64, vfs.files() as u64);
assert_eq!(fs.blocks() as u64, vfs.blocks() as u64);
assert_eq!(fs.block_size() as u64, vfs.fragment_size() as u64);
}
}