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|
pub use libc::dev_t;
pub use libc::stat as FileStat;
use {Error, Result, NixPath, from_ffi};
use errno::Errno;
use fcntl::Fd;
use libc::mode_t;
use std::fmt;
use std::mem;
mod ffi {
use libc::{c_char, c_int, mode_t, dev_t};
pub use libc::{stat, fstat, lstat};
extern {
pub fn mknod(pathname: *const c_char, mode: mode_t, dev: dev_t) -> c_int;
pub fn umask(mask: mode_t) -> mode_t;
}
}
bitflags!(
flags SFlag: mode_t {
const S_IFREG = 0o100000,
const S_IFCHR = 0o020000,
const S_IFBLK = 0o060000,
const S_IFIFO = 0o010000,
const S_IFSOCK = 0o140000
}
);
bitflags! {
flags Mode: mode_t {
const S_IRWXU = 0o0700,
const S_IRUSR = 0o0400,
const S_IWUSR = 0o0200,
const S_IXUSR = 0o0100,
const S_IRWXG = 0o0070,
const S_IRGRP = 0o0040,
const S_IWGRP = 0o0020,
const S_IXGRP = 0o0010,
const S_IRWXO = 0o0007,
const S_IROTH = 0o0004,
const S_IWOTH = 0o0002,
const S_IXOTH = 0o0001,
const S_ISUID = 0o4000,
const S_ISGID = 0o2000,
const S_ISVTX = 0o1000,
}
}
impl fmt::Debug for SFlag {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
write!(fmt, "SFlag {{ bits: {} }}", self.bits())
}
}
pub fn mknod<P: ?Sized + NixPath>(path: &P, kind: SFlag, perm: Mode, dev: dev_t) -> Result<()> {
let res = try!(path.with_nix_path(|cstr| {
unsafe {
ffi::mknod(cstr.as_ptr(), kind.bits | perm.bits() as mode_t, dev)
}
}));
from_ffi(res)
}
#[cfg(target_os = "linux")]
const MINORBITS: usize = 20;
#[cfg(target_os = "linux")]
pub fn mkdev(major: u64, minor: u64) -> dev_t {
(major << MINORBITS) | minor
}
pub fn umask(mode: Mode) -> Mode {
let prev = unsafe { ffi::umask(mode.bits() as mode_t) };
Mode::from_bits(prev).expect("[BUG] umask returned invalid Mode")
}
pub fn stat<P: ?Sized + NixPath>(path: &P) -> Result<FileStat> {
let mut dst = unsafe { mem::uninitialized() };
let res = try!(path.with_nix_path(|cstr| {
unsafe {
ffi::stat(cstr.as_ptr(), &mut dst as *mut FileStat)
}
}));
if res < 0 {
return Err(Error::Sys(Errno::last()));
}
Ok(dst)
}
pub fn lstat<P: ?Sized + NixPath>(path: &P) -> Result<FileStat> {
let mut dst = unsafe { mem::uninitialized() };
let res = try!(path.with_nix_path(|cstr| {
unsafe {
ffi::lstat(cstr.as_ptr(), &mut dst as *mut FileStat)
}
}));
if res < 0 {
return Err(Error::Sys(Errno::last()));
}
Ok(dst)
}
pub fn fstat(fd: Fd) -> Result<FileStat> {
let mut dst = unsafe { mem::uninitialized() };
let res = unsafe { ffi::fstat(fd, &mut dst as *mut FileStat) };
if res < 0 {
return Err(Error::Sys(Errno::last()));
}
Ok(dst)
}
|
