sys/statfs: use statfs from libc

the previous definition were linux specific.

CHANGELOG.md

@@ -12,7 +12,10 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ### Changed
 - Marked `sys::mman::{ mmap, munmap, madvise, munlock, msync }` as unsafe.
   ([#559](https://github.com/nix-rust/nix/pull/559))
-
+- `nix::sys::statfs::{statfs,fstatfs}` uses statfs definition from `libc::statfs` instead of own linux specific type `nix::sys::Statfs`.
+  Also file system type constants like `nix::sys::statfs::ADFS_SUPER_MAGIC` were removed in favor of the libc equivalent.
+  ([#561](https://github.com/nix-rust/nix/pull/561))
+
 <!--### Fixed-->
 
 ## [0.8.0] 2017-03-02

src/sys/statfs.rs

@@ -1,116 +1,21 @@
 use {Errno, Result, NixPath};
 use std::os::unix::io::AsRawFd;
+use libc;
 
-pub mod vfs {
-    #[cfg(target_pointer_width = "32")]
-    pub mod hwdep {
-        use libc::{c_uint};
-        pub type FsType = c_uint;
-        pub type BlockSize = c_uint;
-        pub type NameLen = c_uint;
-        pub type FragmentSize = c_uint;
-        pub type SwordType = c_uint;
-    }
-
-    #[cfg(target_pointer_width = "64")]
-    pub mod hwdep {
-        use libc::{c_long};
-        pub type FsType = c_long;
-        pub type BlockSize = c_long;
-        pub type NameLen = c_long;
-        pub type FragmentSize = c_long;
-        pub type SwordType = c_long;
-    }
-
-    use sys::statfs::vfs::hwdep::*;
-
-    #[repr(C)]
-    #[derive(Debug,Copy,Clone)]
-    pub struct Statfs {
-        pub f_type:  FsType,
-        pub f_bsize: BlockSize,
-        pub f_blocks: u64,
-        pub f_bfree: u64,
-        pub f_bavail: u64,
-        pub f_files: u64,
-        pub f_ffree: u64,
-        pub f_fsid: u64,
-        pub f_namelen: NameLen,
-        pub f_frsize: FragmentSize,
-        pub f_spare: [SwordType; 5],
-    }
-
-    pub const ADFS_SUPER_MAGIC : FsType =      0xadf5;
-    pub const AFFS_SUPER_MAGIC : FsType =      0xADFF;
-    pub const BEFS_SUPER_MAGIC : FsType =      0x42465331;
-    pub const BFS_MAGIC : FsType =             0x1BADFACE;
-    pub const CIFS_MAGIC_NUMBER : FsType =     0xFF534D42;
-    pub const CODA_SUPER_MAGIC : FsType =      0x73757245;
-    pub const COH_SUPER_MAGIC : FsType =       0x012FF7B7;
-    pub const CRAMFS_MAGIC : FsType =          0x28cd3d45;
-    pub const DEVFS_SUPER_MAGIC : FsType =     0x1373;
-    pub const EFS_SUPER_MAGIC : FsType =       0x00414A53;
-    pub const EXT_SUPER_MAGIC : FsType =       0x137D;
-    pub const EXT2_OLD_SUPER_MAGIC : FsType =  0xEF51;
-    pub const EXT2_SUPER_MAGIC : FsType =      0xEF53;
-    pub const EXT3_SUPER_MAGIC : FsType =      0xEF53;
-    pub const EXT4_SUPER_MAGIC : FsType =      0xEF53;
-    pub const HFS_SUPER_MAGIC : FsType =       0x4244;
-    pub const HPFS_SUPER_MAGIC : FsType =      0xF995E849;
-    pub const HUGETLBFS_MAGIC : FsType =       0x958458f6;
-    pub const ISOFS_SUPER_MAGIC : FsType =     0x9660;
-    pub const JFFS2_SUPER_MAGIC : FsType =     0x72b6;
-    pub const JFS_SUPER_MAGIC : FsType =       0x3153464a;
-    pub const MINIX_SUPER_MAGIC : FsType =     0x137F; /* orig. minix */
-    pub const MINIX_SUPER_MAGIC2 : FsType =    0x138F; /* 30 char minix */
-    pub const MINIX2_SUPER_MAGIC : FsType =    0x2468; /* minix V2 */
-    pub const MINIX2_SUPER_MAGIC2 : FsType =   0x2478; /* minix V2, 30 char names */
-    pub const MSDOS_SUPER_MAGIC : FsType =     0x4d44;
-    pub const NCP_SUPER_MAGIC : FsType =       0x564c;
-    pub const NFS_SUPER_MAGIC : FsType =       0x6969;
-    pub const NTFS_SB_MAGIC : FsType =         0x5346544e;
-    pub const OPENPROM_SUPER_MAGIC : FsType =  0x9fa1;
-    pub const PROC_SUPER_MAGIC : FsType =      0x9fa0;
-    pub const QNX4_SUPER_MAGIC : FsType =      0x002f;
-    pub const REISERFS_SUPER_MAGIC : FsType =  0x52654973;
-    pub const ROMFS_MAGIC : FsType =           0x7275;
-    pub const SMB_SUPER_MAGIC : FsType =       0x517B;
-    pub const SYSV2_SUPER_MAGIC : FsType =     0x012FF7B6;
-    pub const SYSV4_SUPER_MAGIC : FsType =     0x012FF7B5;
-    pub const TMPFS_MAGIC : FsType =           0x01021994;
-    pub const UDF_SUPER_MAGIC : FsType =       0x15013346;
-    pub const UFS_MAGIC : FsType =             0x00011954;
-    pub const USBDEVICE_SUPER_MAGIC : FsType = 0x9fa2;
-    pub const VXFS_SUPER_MAGIC : FsType =      0xa501FCF5;
-    pub const XENIX_SUPER_MAGIC : FsType =     0x012FF7B4;
-    pub const XFS_SUPER_MAGIC : FsType =       0x58465342;
-    pub const _XIAFS_SUPER_MAGIC : FsType =    0x012FD16D;
-}
-
-mod ffi {
-    use libc::{c_int,c_char};
-    use sys::statfs::vfs;
-
-    extern {
-        pub fn statfs(path: * const c_char, buf: *mut vfs::Statfs) -> c_int;
-        pub fn fstatfs(fd: c_int, buf: *mut vfs::Statfs) -> c_int;
-    }
-}
-
-pub fn statfs<P: ?Sized + NixPath>(path: &P, stat: &mut vfs::Statfs) -> Result<()> {
+pub fn statfs<P: ?Sized + NixPath>(path: &P, stat: &mut libc::statfs) -> Result<()> {
     unsafe {
         Errno::clear();
         let res = try!(
-            path.with_nix_path(|path| ffi::statfs(path.as_ptr(), stat))
+            path.with_nix_path(|path| libc::statfs(path.as_ptr(), stat))
         );
 
         Errno::result(res).map(drop)
     }
 }
 
-pub fn fstatfs<T: AsRawFd>(fd: &T, stat: &mut vfs::Statfs) -> Result<()> {
+pub fn fstatfs<T: AsRawFd>(fd: &T, stat: &mut libc::statfs) -> Result<()> {
     unsafe {
         Errno::clear();
-        Errno::result(ffi::fstatfs(fd.as_raw_fd(), stat)).map(drop)
+        Errno::result(libc::fstatfs(fd.as_raw_fd(), stat)).map(drop)
     }
 }