std: Remove old_io/old_path/rand modules
This commit entirely removes the old I/O, path, and rand modules. All functionality has been deprecated and unstable for quite some time now!
This commit is contained in:
Alex Crichton
parent
dabf0c6371
commit
bf4e77d4b5
57 changed files with 60 additions and 22827 deletions
|
|
@ -1,409 +0,0 @@
|
|||
// Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
|
||||
// file at the top-level directory of this distribution and at
|
||||
// http://rust-lang.org/COPYRIGHT.
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
||||
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
||||
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
||||
// option. This file may not be copied, modified, or distributed
|
||||
// except according to those terms.
|
||||
|
||||
//! Blocking posix-based file I/O
|
||||
#![allow(deprecated)]
|
||||
|
||||
#![allow(deprecated)] // this module itself is essentially deprecated
|
||||
|
||||
use prelude::v1::*;
|
||||
|
||||
use ffi::{CString, CStr};
|
||||
use old_io::{FilePermission, Write, UnstableFileStat, Open, FileAccess, FileMode};
|
||||
use old_io::{IoResult, FileStat, SeekStyle};
|
||||
use old_io::{Read, Truncate, SeekCur, SeekSet, ReadWrite, SeekEnd, Append};
|
||||
use old_io;
|
||||
use old_path::{Path, GenericPath};
|
||||
use libc::{self, c_int, c_void};
|
||||
use mem;
|
||||
use ptr;
|
||||
use sys::retry;
|
||||
use sys_common::{keep_going, eof, mkerr_libc};
|
||||
|
||||
pub type fd_t = libc::c_int;
|
||||
|
||||
pub struct FileDesc {
|
||||
/// The underlying C file descriptor.
|
||||
fd: fd_t,
|
||||
|
||||
/// Whether to close the file descriptor on drop.
|
||||
close_on_drop: bool,
|
||||
}
|
||||
|
||||
impl FileDesc {
|
||||
pub fn new(fd: fd_t, close_on_drop: bool) -> FileDesc {
|
||||
FileDesc { fd: fd, close_on_drop: close_on_drop }
|
||||
}
|
||||
|
||||
pub fn read(&self, buf: &mut [u8]) -> IoResult<usize> {
|
||||
let ret = retry(|| unsafe {
|
||||
libc::read(self.fd(),
|
||||
buf.as_mut_ptr() as *mut libc::c_void,
|
||||
buf.len() as libc::size_t)
|
||||
});
|
||||
if ret == 0 {
|
||||
Err(eof())
|
||||
} else if ret < 0 {
|
||||
Err(super::last_error())
|
||||
} else {
|
||||
Ok(ret as usize)
|
||||
}
|
||||
}
|
||||
pub fn write(&self, buf: &[u8]) -> IoResult<()> {
|
||||
let ret = keep_going(buf, |buf, len| {
|
||||
unsafe {
|
||||
libc::write(self.fd(), buf as *const libc::c_void,
|
||||
len as libc::size_t) as i64
|
||||
}
|
||||
});
|
||||
if ret < 0 {
|
||||
Err(super::last_error())
|
||||
} else {
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
pub fn fd(&self) -> fd_t { self.fd }
|
||||
|
||||
pub fn seek(&self, pos: i64, whence: SeekStyle) -> IoResult<u64> {
|
||||
let whence = match whence {
|
||||
SeekSet => libc::SEEK_SET,
|
||||
SeekEnd => libc::SEEK_END,
|
||||
SeekCur => libc::SEEK_CUR,
|
||||
};
|
||||
let n = unsafe { libc::lseek(self.fd(), pos as libc::off_t, whence) };
|
||||
if n < 0 {
|
||||
Err(super::last_error())
|
||||
} else {
|
||||
Ok(n as u64)
|
||||
}
|
||||
}
|
||||
|
||||
pub fn tell(&self) -> IoResult<u64> {
|
||||
let n = unsafe { libc::lseek(self.fd(), 0, libc::SEEK_CUR) };
|
||||
if n < 0 {
|
||||
Err(super::last_error())
|
||||
} else {
|
||||
Ok(n as u64)
|
||||
}
|
||||
}
|
||||
|
||||
pub fn fsync(&self) -> IoResult<()> {
|
||||
mkerr_libc(retry(|| unsafe { libc::fsync(self.fd()) }))
|
||||
}
|
||||
|
||||
pub fn datasync(&self) -> IoResult<()> {
|
||||
return mkerr_libc(os_datasync(self.fd()));
|
||||
|
||||
#[cfg(any(target_os = "macos", target_os = "ios"))]
|
||||
fn os_datasync(fd: c_int) -> c_int {
|
||||
unsafe { libc::fcntl(fd, libc::F_FULLFSYNC) }
|
||||
}
|
||||
#[cfg(target_os = "linux")]
|
||||
fn os_datasync(fd: c_int) -> c_int {
|
||||
retry(|| unsafe { libc::fdatasync(fd) })
|
||||
}
|
||||
#[cfg(not(any(target_os = "macos", target_os = "ios", target_os = "linux")))]
|
||||
fn os_datasync(fd: c_int) -> c_int {
|
||||
retry(|| unsafe { libc::fsync(fd) })
|
||||
}
|
||||
}
|
||||
|
||||
pub fn truncate(&self, offset: i64) -> IoResult<()> {
|
||||
mkerr_libc(retry(|| unsafe {
|
||||
libc::ftruncate(self.fd(), offset as libc::off_t)
|
||||
}))
|
||||
}
|
||||
|
||||
pub fn fstat(&self) -> IoResult<FileStat> {
|
||||
let mut stat: libc::stat = unsafe { mem::zeroed() };
|
||||
match unsafe { libc::fstat(self.fd(), &mut stat) } {
|
||||
0 => Ok(mkstat(&stat)),
|
||||
_ => Err(super::last_error()),
|
||||
}
|
||||
}
|
||||
|
||||
/// Extract the actual filedescriptor without closing it.
|
||||
pub fn unwrap(self) -> fd_t {
|
||||
let fd = self.fd;
|
||||
unsafe { mem::forget(self) };
|
||||
fd
|
||||
}
|
||||
}
|
||||
|
||||
impl Drop for FileDesc {
|
||||
fn drop(&mut self) {
|
||||
// closing stdio file handles makes no sense, so never do it. Also, note
|
||||
// that errors are ignored when closing a file descriptor. The reason
|
||||
// for this is that if an error occurs we don't actually know if the
|
||||
// file descriptor was closed or not, and if we retried (for something
|
||||
// like EINTR), we might close another valid file descriptor (opened
|
||||
// after we closed ours.
|
||||
if self.close_on_drop && self.fd > libc::STDERR_FILENO {
|
||||
let n = unsafe { libc::close(self.fd) };
|
||||
if n != 0 {
|
||||
println!("error {} when closing file descriptor {}", n, self.fd);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn cstr(path: &Path) -> IoResult<CString> {
|
||||
Ok(try!(CString::new(path.as_vec())))
|
||||
}
|
||||
|
||||
pub fn open(path: &Path, fm: FileMode, fa: FileAccess) -> IoResult<FileDesc> {
|
||||
let flags = match fm {
|
||||
Open => 0,
|
||||
Append => libc::O_APPEND,
|
||||
Truncate => libc::O_TRUNC,
|
||||
};
|
||||
// Opening with a write permission must silently create the file.
|
||||
let (flags, mode) = match fa {
|
||||
Read => (flags | libc::O_RDONLY, 0),
|
||||
Write => (flags | libc::O_WRONLY | libc::O_CREAT,
|
||||
libc::S_IRUSR | libc::S_IWUSR),
|
||||
ReadWrite => (flags | libc::O_RDWR | libc::O_CREAT,
|
||||
libc::S_IRUSR | libc::S_IWUSR),
|
||||
};
|
||||
|
||||
let path = try!(cstr(path));
|
||||
match retry(|| unsafe { libc::open(path.as_ptr(), flags, mode) }) {
|
||||
-1 => Err(super::last_error()),
|
||||
fd => Ok(FileDesc::new(fd, true)),
|
||||
}
|
||||
}
|
||||
|
||||
pub fn mkdir(p: &Path, mode: usize) -> IoResult<()> {
|
||||
let p = try!(cstr(p));
|
||||
mkerr_libc(unsafe { libc::mkdir(p.as_ptr(), mode as libc::mode_t) })
|
||||
}
|
||||
|
||||
pub fn readdir(p: &Path) -> IoResult<Vec<Path>> {
|
||||
use libc::{dirent_t};
|
||||
use libc::{opendir, readdir_r, closedir};
|
||||
|
||||
fn prune(root: &CString, dirs: Vec<Path>) -> Vec<Path> {
|
||||
let root = Path::new(root);
|
||||
|
||||
dirs.into_iter().filter(|path| {
|
||||
path.as_vec() != b"." && path.as_vec() != b".."
|
||||
}).map(|path| root.join(path)).collect()
|
||||
}
|
||||
|
||||
extern {
|
||||
fn rust_dirent_t_size() -> libc::c_int;
|
||||
fn rust_list_dir_val(ptr: *mut dirent_t) -> *const libc::c_char;
|
||||
}
|
||||
|
||||
let size = unsafe { rust_dirent_t_size() };
|
||||
let mut buf = Vec::<u8>::with_capacity(size as usize);
|
||||
let ptr = buf.as_mut_ptr() as *mut dirent_t;
|
||||
|
||||
let p = try!(CString::new(p.as_vec()));
|
||||
let dir_ptr = unsafe {opendir(p.as_ptr())};
|
||||
|
||||
if dir_ptr as usize != 0 {
|
||||
let mut paths = vec!();
|
||||
let mut entry_ptr = ptr::null_mut();
|
||||
while unsafe { readdir_r(dir_ptr, ptr, &mut entry_ptr) == 0 } {
|
||||
if entry_ptr.is_null() { break }
|
||||
paths.push(unsafe {
|
||||
Path::new(CStr::from_ptr(rust_list_dir_val(entry_ptr)).to_bytes())
|
||||
});
|
||||
}
|
||||
assert_eq!(unsafe { closedir(dir_ptr) }, 0);
|
||||
Ok(prune(&p, paths))
|
||||
} else {
|
||||
Err(super::last_error())
|
||||
}
|
||||
}
|
||||
|
||||
pub fn unlink(p: &Path) -> IoResult<()> {
|
||||
let p = try!(cstr(p));
|
||||
mkerr_libc(unsafe { libc::unlink(p.as_ptr()) })
|
||||
}
|
||||
|
||||
pub fn rename(old: &Path, new: &Path) -> IoResult<()> {
|
||||
let old = try!(cstr(old));
|
||||
let new = try!(cstr(new));
|
||||
mkerr_libc(unsafe {
|
||||
libc::rename(old.as_ptr(), new.as_ptr())
|
||||
})
|
||||
}
|
||||
|
||||
pub fn chmod(p: &Path, mode: usize) -> IoResult<()> {
|
||||
let p = try!(cstr(p));
|
||||
mkerr_libc(retry(|| unsafe {
|
||||
libc::chmod(p.as_ptr(), mode as libc::mode_t)
|
||||
}))
|
||||
}
|
||||
|
||||
pub fn rmdir(p: &Path) -> IoResult<()> {
|
||||
let p = try!(cstr(p));
|
||||
mkerr_libc(unsafe { libc::rmdir(p.as_ptr()) })
|
||||
}
|
||||
|
||||
pub fn chown(p: &Path, uid: isize, gid: isize) -> IoResult<()> {
|
||||
let p = try!(cstr(p));
|
||||
mkerr_libc(retry(|| unsafe {
|
||||
libc::chown(p.as_ptr(), uid as libc::uid_t, gid as libc::gid_t)
|
||||
}))
|
||||
}
|
||||
|
||||
pub fn readlink(p: &Path) -> IoResult<Path> {
|
||||
let c_path = try!(cstr(p));
|
||||
let p = c_path.as_ptr();
|
||||
let mut len = unsafe { libc::pathconf(p as *mut _, libc::_PC_NAME_MAX) };
|
||||
if len == -1 {
|
||||
len = 1024; // FIXME: read PATH_MAX from C ffi?
|
||||
}
|
||||
let mut buf: Vec<u8> = Vec::with_capacity(len as usize);
|
||||
match unsafe {
|
||||
libc::readlink(p, buf.as_ptr() as *mut libc::c_char,
|
||||
len as libc::size_t) as libc::c_int
|
||||
} {
|
||||
-1 => Err(super::last_error()),
|
||||
n => {
|
||||
assert!(n > 0);
|
||||
unsafe { buf.set_len(n as usize); }
|
||||
Ok(Path::new(buf))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub fn symlink(src: &Path, dst: &Path) -> IoResult<()> {
|
||||
let src = try!(cstr(src));
|
||||
let dst = try!(cstr(dst));
|
||||
mkerr_libc(unsafe { libc::symlink(src.as_ptr(), dst.as_ptr()) })
|
||||
}
|
||||
|
||||
pub fn link(src: &Path, dst: &Path) -> IoResult<()> {
|
||||
let src = try!(cstr(src));
|
||||
let dst = try!(cstr(dst));
|
||||
mkerr_libc(unsafe { libc::link(src.as_ptr(), dst.as_ptr()) })
|
||||
}
|
||||
|
||||
fn mkstat(stat: &libc::stat) -> FileStat {
|
||||
// FileStat times are in milliseconds
|
||||
fn mktime(secs: u64, nsecs: u64) -> u64 { secs * 1000 + nsecs / 1000000 }
|
||||
|
||||
fn ctime(stat: &libc::stat) -> u64 {
|
||||
mktime(stat.st_ctime as u64, stat.st_ctime_nsec as u64)
|
||||
}
|
||||
|
||||
fn atime(stat: &libc::stat) -> u64 {
|
||||
mktime(stat.st_atime as u64, stat.st_atime_nsec as u64)
|
||||
}
|
||||
|
||||
fn mtime(stat: &libc::stat) -> u64 {
|
||||
mktime(stat.st_mtime as u64, stat.st_mtime_nsec as u64)
|
||||
}
|
||||
|
||||
#[cfg(not(any(target_os = "linux", target_os = "android")))]
|
||||
fn flags(stat: &libc::stat) -> u64 { stat.st_flags as u64 }
|
||||
#[cfg(any(target_os = "linux", target_os = "android"))]
|
||||
fn flags(_stat: &libc::stat) -> u64 { 0 }
|
||||
|
||||
#[cfg(not(any(target_os = "linux", target_os = "android")))]
|
||||
fn gen(stat: &libc::stat) -> u64 { stat.st_gen as u64 }
|
||||
#[cfg(any(target_os = "linux", target_os = "android"))]
|
||||
fn gen(_stat: &libc::stat) -> u64 { 0 }
|
||||
|
||||
FileStat {
|
||||
size: stat.st_size as u64,
|
||||
kind: match (stat.st_mode as libc::mode_t) & libc::S_IFMT {
|
||||
libc::S_IFREG => old_io::FileType::RegularFile,
|
||||
libc::S_IFDIR => old_io::FileType::Directory,
|
||||
libc::S_IFIFO => old_io::FileType::NamedPipe,
|
||||
libc::S_IFBLK => old_io::FileType::BlockSpecial,
|
||||
libc::S_IFLNK => old_io::FileType::Symlink,
|
||||
_ => old_io::FileType::Unknown,
|
||||
},
|
||||
perm: FilePermission::from_bits_truncate(stat.st_mode as u32),
|
||||
created: ctime(stat),
|
||||
modified: mtime(stat),
|
||||
accessed: atime(stat),
|
||||
unstable: UnstableFileStat {
|
||||
device: stat.st_dev as u64,
|
||||
inode: stat.st_ino as u64,
|
||||
rdev: stat.st_rdev as u64,
|
||||
nlink: stat.st_nlink as u64,
|
||||
uid: stat.st_uid as u64,
|
||||
gid: stat.st_gid as u64,
|
||||
blksize: stat.st_blksize as u64,
|
||||
blocks: stat.st_blocks as u64,
|
||||
flags: flags(stat),
|
||||
gen: gen(stat),
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
pub fn stat(p: &Path) -> IoResult<FileStat> {
|
||||
let p = try!(cstr(p));
|
||||
let mut stat: libc::stat = unsafe { mem::zeroed() };
|
||||
match unsafe { libc::stat(p.as_ptr(), &mut stat) } {
|
||||
0 => Ok(mkstat(&stat)),
|
||||
_ => Err(super::last_error()),
|
||||
}
|
||||
}
|
||||
|
||||
pub fn lstat(p: &Path) -> IoResult<FileStat> {
|
||||
let p = try!(cstr(p));
|
||||
let mut stat: libc::stat = unsafe { mem::zeroed() };
|
||||
match unsafe { libc::lstat(p.as_ptr(), &mut stat) } {
|
||||
0 => Ok(mkstat(&stat)),
|
||||
_ => Err(super::last_error()),
|
||||
}
|
||||
}
|
||||
|
||||
pub fn utime(p: &Path, atime: u64, mtime: u64) -> IoResult<()> {
|
||||
let p = try!(cstr(p));
|
||||
let buf = libc::utimbuf {
|
||||
actime: (atime / 1000) as libc::time_t,
|
||||
modtime: (mtime / 1000) as libc::time_t,
|
||||
};
|
||||
mkerr_libc(unsafe { libc::utime(p.as_ptr(), &buf) })
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::FileDesc;
|
||||
use libc;
|
||||
use os;
|
||||
use prelude::v1::*;
|
||||
|
||||
#[cfg_attr(any(target_os = "freebsd",
|
||||
target_os = "openbsd",
|
||||
target_os = "bitrig"),
|
||||
ignore)]
|
||||
// under some system, pipe(2) will return a bidrectionnal pipe
|
||||
#[test]
|
||||
fn test_file_desc() {
|
||||
// Run this test with some pipes so we don't have to mess around with
|
||||
// opening or closing files.
|
||||
let (mut reader, mut writer) = unsafe { ::sys::os::pipe().unwrap() };
|
||||
|
||||
writer.write(b"test").unwrap();
|
||||
let mut buf = [0; 4];
|
||||
match reader.read(&mut buf) {
|
||||
Ok(4) => {
|
||||
assert_eq!(buf[0], 't' as u8);
|
||||
assert_eq!(buf[1], 'e' as u8);
|
||||
assert_eq!(buf[2], 's' as u8);
|
||||
assert_eq!(buf[3], 't' as u8);
|
||||
}
|
||||
r => panic!("invalid read: {:?}", r),
|
||||
}
|
||||
|
||||
assert!(writer.read(&mut buf).is_err());
|
||||
assert!(reader.write(&buf).is_err());
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue