Bind stat and fstat

Author: tilde-engineering

src/sys/mod.rs

@@ -10,7 +10,6 @@ pub mod eventfd;
 
 pub mod socket;
 
-#[cfg(target_os = "linux")]
 pub mod stat;
 
 #[cfg(target_os = "linux")]

src/sys/stat.rs

@@ -1,13 +1,17 @@
 pub use libc::dev_t;
+pub use libc::stat as FileStat;
 
 use std::fmt;
 use std::io::FilePermission;
+use std::mem;
 use std::path::Path;
 use libc::mode_t;
-use errno::{SysResult, from_ffi};
+use errno::{SysResult, SysError, from_ffi};
+use fcntl::Fd;
 
 mod ffi {
     use libc::{c_char, c_int, mode_t, dev_t};
+    pub use libc::{stat, fstat};
 
     extern {
         pub fn mknod(pathname: *const c_char, mode: mode_t, dev: dev_t) -> c_int;
@@ -32,18 +36,41 @@ impl fmt::Show for SFlag {
 }
 
 pub fn mknod(path: &Path, kind: SFlag, perm: FilePermission, dev: dev_t) -> SysResult<()> {
-    let res = unsafe { ffi::mknod(path.to_c_str().as_ptr(), kind.bits | perm.bits(), dev) };
+    let res = unsafe { ffi::mknod(path.to_c_str().as_ptr(), kind.bits | perm.bits() as mode_t, dev) };
     from_ffi(res)
 }
 
 static MINORBITS: uint = 20;
 // static MINORMASK: dev_t = ((1 << MINORBITS) - 1);
 
+#[cfg(target_os = "linux")]
 pub fn mkdev(major: u64, minor: u64) -> dev_t {
     (major << MINORBITS) | minor
 }
 
 pub fn umask(mode: FilePermission) -> FilePermission {
-    let prev = unsafe { ffi::umask(mode.bits()) };
-    FilePermission::from_bits(prev).expect("[BUG] umask returned invalid FilePermission")
+    let prev = unsafe { ffi::umask(mode.bits() as mode_t) };
+    FilePermission::from_bits(prev as u32).expect("[BUG] umask returned invalid FilePermission")
+}
+
+pub fn stat(path: &Path) -> SysResult<FileStat> {
+    let mut dst = unsafe { mem::uninitialized() };
+    let res = unsafe { ffi::stat(path.to_c_str().as_ptr(), &mut dst as *mut FileStat) };
+
+    if res < 0 {
+        return Err(SysError::last());
+    }
+
+    Ok(dst)
+}
+
+pub fn fstat(fd: Fd) -> SysResult<FileStat> {
+    let mut dst = unsafe { mem::uninitialized() };
+    let res = unsafe { ffi::fstat(fd, &mut dst as *mut FileStat) };
+
+    if res < 0 {
+        return Err(SysError::last());
+    }
+
+    Ok(dst)
 }