Merging upstream version 1.76.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 853 insertions, 0 deletions

diff --git a/vendor/nix/src/sys/statfs.rs b/vendor/nix/src/sys/statfs.rs
new file mode 100644
index 000000000..5111df2e6
--- /dev/null
+++ b/vendor/nix/src/sys/statfs.rs
@@ -0,0 +1,853 @@
+//! Get filesystem statistics, non-portably
+//!
+//! See [`statvfs`](crate::sys::statvfs) for a portable alternative.
+#[cfg(not(any(target_os = "linux", target_os = "android")))]
+use std::ffi::CStr;
+use std::fmt::{self, Debug};
+use std::mem;
+use std::os::unix::io::{AsFd, AsRawFd};
+
+use cfg_if::cfg_if;
+
+#[cfg(all(
+    feature = "mount",
+    any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd"
+    )
+))]
+use crate::mount::MntFlags;
+#[cfg(target_os = "linux")]
+use crate::sys::statvfs::FsFlags;
+use crate::{errno::Errno, NixPath, Result};
+
+/// 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;
+
+cfg_if! {
+    if #[cfg(any(target_os = "android", target_os = "fuchsia", target_os = "linux"))] {
+        type type_of_statfs = libc::statfs64;
+        const LIBC_FSTATFS: unsafe extern fn
+            (fd: libc::c_int, buf: *mut type_of_statfs) -> libc::c_int
+            = libc::fstatfs64;
+        const LIBC_STATFS: unsafe extern fn
+            (path: *const libc::c_char, buf: *mut type_of_statfs) -> libc::c_int
+            = libc::statfs64;
+    } else {
+        type type_of_statfs = libc::statfs;
+        const LIBC_FSTATFS: unsafe extern fn
+            (fd: libc::c_int, buf: *mut type_of_statfs) -> libc::c_int
+            = libc::fstatfs;
+        const LIBC_STATFS: unsafe extern fn
+            (path: *const libc::c_char, buf: *mut type_of_statfs) -> libc::c_int
+            = libc::statfs;
+    }
+}
+
+/// Describes a mounted file system
+#[derive(Clone, Copy)]
+#[repr(transparent)]
+pub struct Statfs(type_of_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", target_env = "uclibc"))]
+type fs_type_t = libc::c_int;
+#[cfg(all(
+    target_os = "linux",
+    not(any(
+        target_arch = "s390x",
+        target_env = "musl",
+        target_env = "uclibc"
+    ))
+))]
+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(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const ADFS_SUPER_MAGIC: FsType =
+    FsType(libc::ADFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const AFFS_SUPER_MAGIC: FsType =
+    FsType(libc::AFFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const AFS_SUPER_MAGIC: FsType = FsType(libc::AFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const AUTOFS_SUPER_MAGIC: FsType =
+    FsType(libc::AUTOFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const BPF_FS_MAGIC: FsType = FsType(libc::BPF_FS_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const BTRFS_SUPER_MAGIC: FsType =
+    FsType(libc::BTRFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const CGROUP2_SUPER_MAGIC: FsType =
+    FsType(libc::CGROUP2_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const CGROUP_SUPER_MAGIC: FsType =
+    FsType(libc::CGROUP_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const CODA_SUPER_MAGIC: FsType =
+    FsType(libc::CODA_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const CRAMFS_MAGIC: FsType = FsType(libc::CRAMFS_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const DEBUGFS_MAGIC: FsType = FsType(libc::DEBUGFS_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const DEVPTS_SUPER_MAGIC: FsType =
+    FsType(libc::DEVPTS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const ECRYPTFS_SUPER_MAGIC: FsType =
+    FsType(libc::ECRYPTFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const EFS_SUPER_MAGIC: FsType = FsType(libc::EFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const EXT2_SUPER_MAGIC: FsType =
+    FsType(libc::EXT2_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const EXT3_SUPER_MAGIC: FsType =
+    FsType(libc::EXT3_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const EXT4_SUPER_MAGIC: FsType =
+    FsType(libc::EXT4_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const F2FS_SUPER_MAGIC: FsType =
+    FsType(libc::F2FS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const FUSE_SUPER_MAGIC: FsType =
+    FsType(libc::FUSE_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const FUTEXFS_SUPER_MAGIC: FsType =
+    FsType(libc::FUTEXFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const HOSTFS_SUPER_MAGIC: FsType =
+    FsType(libc::HOSTFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const HPFS_SUPER_MAGIC: FsType =
+    FsType(libc::HPFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const HUGETLBFS_MAGIC: FsType = FsType(libc::HUGETLBFS_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const ISOFS_SUPER_MAGIC: FsType =
+    FsType(libc::ISOFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const JFFS2_SUPER_MAGIC: FsType =
+    FsType(libc::JFFS2_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const MINIX2_SUPER_MAGIC2: FsType =
+    FsType(libc::MINIX2_SUPER_MAGIC2 as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const MINIX2_SUPER_MAGIC: FsType =
+    FsType(libc::MINIX2_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const MINIX3_SUPER_MAGIC: FsType =
+    FsType(libc::MINIX3_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const MINIX_SUPER_MAGIC2: FsType =
+    FsType(libc::MINIX_SUPER_MAGIC2 as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const MINIX_SUPER_MAGIC: FsType =
+    FsType(libc::MINIX_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const MSDOS_SUPER_MAGIC: FsType =
+    FsType(libc::MSDOS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const NCP_SUPER_MAGIC: FsType = FsType(libc::NCP_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const NFS_SUPER_MAGIC: FsType = FsType(libc::NFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const NILFS_SUPER_MAGIC: FsType =
+    FsType(libc::NILFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const OCFS2_SUPER_MAGIC: FsType =
+    FsType(libc::OCFS2_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const OPENPROM_SUPER_MAGIC: FsType =
+    FsType(libc::OPENPROM_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const OVERLAYFS_SUPER_MAGIC: FsType =
+    FsType(libc::OVERLAYFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const PROC_SUPER_MAGIC: FsType =
+    FsType(libc::PROC_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const QNX4_SUPER_MAGIC: FsType =
+    FsType(libc::QNX4_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const QNX6_SUPER_MAGIC: FsType =
+    FsType(libc::QNX6_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const RDTGROUP_SUPER_MAGIC: FsType =
+    FsType(libc::RDTGROUP_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const REISERFS_SUPER_MAGIC: FsType =
+    FsType(libc::REISERFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const SECURITYFS_MAGIC: FsType =
+    FsType(libc::SECURITYFS_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const SELINUX_MAGIC: FsType = FsType(libc::SELINUX_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const SMACK_MAGIC: FsType = FsType(libc::SMACK_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const SMB_SUPER_MAGIC: FsType = FsType(libc::SMB_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const SYSFS_MAGIC: FsType = FsType(libc::SYSFS_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const TMPFS_MAGIC: FsType = FsType(libc::TMPFS_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const TRACEFS_MAGIC: FsType = FsType(libc::TRACEFS_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const UDF_SUPER_MAGIC: FsType = FsType(libc::UDF_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const USBDEVICE_SUPER_MAGIC: FsType =
+    FsType(libc::USBDEVICE_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const XENFS_SUPER_MAGIC: FsType =
+    FsType(libc::XENFS_SUPER_MAGIC as fs_type_t);
+#[cfg(any(target_os = "linux", target_os = "android"))]
+#[allow(missing_docs)]
+pub const NSFS_MAGIC: FsType = FsType(libc::NSFS_MAGIC as fs_type_t);
+#[cfg(all(
+    any(target_os = "linux", target_os = "android"),
+    not(target_env = "musl")
+))]
+#[allow(missing_docs)]
+pub const XFS_SUPER_MAGIC: FsType = FsType(libc::XFS_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",
+            target_env = "uclibc"
+        ))
+    ))]
+    #[cfg_attr(docsrs, doc(cfg(all())))]
+    pub fn optimal_transfer_size(&self) -> libc::__fsword_t {
+        self.0.f_bsize
+    }
+
+    /// Optimal transfer block size
+    #[cfg(all(target_os = "linux", target_env = "uclibc"))]
+    #[cfg_attr(docsrs, doc(cfg(all())))]
+    pub fn optimal_transfer_size(&self) -> libc::c_int {
+        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", target_env = "uclibc"))]
+    #[cfg_attr(docsrs, doc(cfg(all())))]
+    pub fn block_size(&self) -> libc::c_int {
+        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",
+            target_env = "uclibc"
+        ))
+    ))]
+    #[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
+    }
+
+    /// Get the mount flags
+    #[cfg(all(
+        feature = "mount",
+        any(
+            target_os = "dragonfly",
+            target_os = "freebsd",
+            target_os = "macos",
+            target_os = "netbsd",
+            target_os = "openbsd"
+        )
+    ))]
+    #[cfg_attr(docsrs, doc(cfg(all())))]
+    #[allow(clippy::unnecessary_cast)] // Not unnecessary on all arches
+    pub fn flags(&self) -> MntFlags {
+        MntFlags::from_bits_truncate(self.0.f_flags as i32)
+    }
+
+    /// Get the mount flags
+    // The f_flags field exists on Android and Fuchsia too, but without man
+    // pages I can't tell if it can be cast to FsFlags.
+    #[cfg(target_os = "linux")]
+    #[cfg_attr(docsrs, doc(cfg(all())))]
+    pub fn flags(&self) -> FsFlags {
+        FsFlags::from_bits_truncate(self.0.f_flags as libc::c_ulong)
+    }
+
+    /// 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", target_env = "uclibc"))]
+    #[cfg_attr(docsrs, doc(cfg(all())))]
+    pub fn maximum_name_length(&self) -> libc::c_int {
+        self.0.f_namelen
+    }
+
+    /// Maximum length of filenames
+    #[cfg(all(
+        target_os = "linux",
+        not(any(
+            target_arch = "s390x",
+            target_env = "musl",
+            target_env = "uclibc"
+        ))
+    ))]
+    #[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 = "fuchsia",
+        target_os = "openbsd",
+        target_os = "linux",
+    ))]
+    #[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(target_os = "emscripten")]
+    #[cfg_attr(docsrs, doc(cfg(all())))]
+    pub fn blocks(&self) -> u32 {
+        self.0.f_blocks
+    }
+
+    /// Free blocks in filesystem
+    #[cfg(any(
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "android",
+        target_os = "freebsd",
+        target_os = "fuchsia",
+        target_os = "openbsd",
+        target_os = "linux",
+    ))]
+    #[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(target_os = "emscripten")]
+    #[cfg_attr(docsrs, doc(cfg(all())))]
+    pub fn blocks_free(&self) -> u32 {
+        self.0.f_bfree
+    }
+
+    /// Free blocks available to unprivileged user
+    #[cfg(any(
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "android",
+        target_os = "fuchsia",
+        target_os = "linux",
+    ))]
+    #[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(target_os = "emscripten")]
+    #[cfg_attr(docsrs, doc(cfg(all())))]
+    pub fn blocks_available(&self) -> u32 {
+        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 = "fuchsia",
+        target_os = "openbsd",
+        target_os = "linux",
+    ))]
+    #[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(target_os = "emscripten")]
+    #[cfg_attr(docsrs, doc(cfg(all())))]
+    pub fn files(&self) -> u32 {
+        self.0.f_files
+    }
+
+    /// Free file nodes in filesystem
+    #[cfg(any(
+        target_os = "ios",
+        target_os = "macos",
+        target_os = "android",
+        target_os = "fuchsia",
+        target_os = "openbsd",
+        target_os = "linux",
+    ))]
+    #[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(target_os = "emscripten")]
+    #[cfg_attr(docsrs, doc(cfg(all())))]
+    pub fn files_free(&self) -> u32 {
+        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 {
+        let mut ds = f.debug_struct("Statfs");
+        ds.field("optimal_transfer_size", &self.optimal_transfer_size());
+        ds.field("block_size", &self.block_size());
+        ds.field("blocks", &self.blocks());
+        ds.field("blocks_free", &self.blocks_free());
+        ds.field("blocks_available", &self.blocks_available());
+        ds.field("files", &self.files());
+        ds.field("files_free", &self.files_free());
+        ds.field("filesystem_id", &self.filesystem_id());
+        #[cfg(all(
+            feature = "mount",
+            any(
+                target_os = "dragonfly",
+                target_os = "freebsd",
+                target_os = "macos",
+                target_os = "netbsd",
+                target_os = "openbsd"
+            )
+        ))]
+        ds.field("flags", &self.flags());
+        ds.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::<type_of_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<Fd: AsFd>(fd: Fd) -> Result<Statfs> {
+    unsafe {
+        let mut stat = mem::MaybeUninit::<type_of_statfs>::uninit();
+        Errno::result(LIBC_FSTATFS(fd.as_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);
+    }
+
+    // The cast is not unnecessary on all platforms.
+    #[allow(clippy::unnecessary_cast)]
+    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())
+    }
+
+    // The cast is not unnecessary on all platforms.
+    #[allow(clippy::unnecessary_cast)]
+    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);
+    }
+}