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-rw-r--r--third_party/rust/nix/src/sys/statfs.rs853
1 files changed, 853 insertions, 0 deletions
diff --git a/third_party/rust/nix/src/sys/statfs.rs b/third_party/rust/nix/src/sys/statfs.rs
new file mode 100644
index 0000000000..9be8ca6667
--- /dev/null
+++ b/third_party/rust/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::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<T: AsRawFd>(fd: &T) -> Result<Statfs> {
+ unsafe {
+ let mut stat = mem::MaybeUninit::<type_of_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);
+ }
+
+ // 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);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 12:09:41 +0000