statfs() & fstatfs()

1 files changed, 70 insertions, 0 deletions

diff --git a/src/sys/statvfs.rs b/src/sys/statvfs.rs
new file mode 100644
index 00000000..c5338109
--- /dev/null
+++ b/src/sys/statvfs.rs
@@ -0,0 +1,70 @@
+use {Result, NixPath, from_ffi};
+use errno::Errno;
+use std::os::unix::io::AsRawFd;
+
+pub mod vfs {
+	use libc::{c_ulong,c_int};
+
+	bitflags!(
+		#[repr(C)]
+		#[derive(Default)]
+		flags FsFlags: c_ulong {
+			const RDONLY = 1,
+			const NOSUID = 2,
+			const NODEV  = 4,
+			const NOEXEC = 8,
+			const SYNCHRONOUS  = 16,
+			const MANDLOCK = 64,
+			const WRITE = 128,
+			const APPEND = 256,
+			const IMMUTABLE = 512,
+			const NOATIME = 1024,
+			const NODIRATIME = 2048,
+			const RELATIME = 4096,
+		}
+	);
+
+	#[repr(C)]
+	#[derive(Debug,Copy,Clone)]
+	pub struct Statvfs {
+		pub f_bsize: c_ulong,
+		pub f_frsize: c_ulong,
+		pub f_blocks: u64,
+		pub f_bfree: u64,
+		pub f_bavail: u64,
+		pub f_files: u64,
+		pub f_ffree: u64,
+		pub f_favail: u64,
+		pub f_fsid: c_ulong,
+		pub f_flag: FsFlags,
+		pub f_namemax: c_ulong,
+		f_spare: [c_int; 6],
+	}
+}
+
+mod ffi {
+	use libc::{c_char, c_int};
+	use sys::statvfs::vfs;
+
+	extern {
+		pub fn statvfs(path: * const c_char, buf: *mut vfs::Statvfs) -> c_int;
+		pub fn fstatvfs(fd: c_int, buf: *mut vfs::Statvfs) -> c_int;
+	}
+}
+
+pub fn statvfs<P: ?Sized + NixPath>(path: &P, stat: &mut vfs::Statvfs) -> Result<()> {
+	unsafe {
+		Errno::clear();
+		let res = try!(
+			path.with_nix_path(|path| ffi::statvfs(path.as_ptr(), stat))
+		);
+		from_ffi(res)
+	}
+}
+
+pub fn fstatvfs<T: AsRawFd>(fd: &T, stat: &mut vfs::Statvfs) -> Result<()> {
+	unsafe {
+		Errno::clear();
+		from_ffi(ffi::fstatvfs(fd.as_raw_fd(), stat))
+	}
+}