1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
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, 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;
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
}
);
impl fmt::Show for SFlag {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
write!(fmt, "SFlag {{ bits: {} }}", self.bits())
}
}
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() as mode_t, dev) };
from_ffi(res)
}
#[cfg(target_os = "linux")]
const MINORBITS: uint = 20;
#[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() 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)
}
|
