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Take sys/vxworks/{fd,fs,io} from sys/unix instead.

This commit is contained in:
Mara Bos 2020-10-07 20:38:25 +02:00
parent 3f196dc137
commit 71bb1dc2a0
9 changed files with 81 additions and 909 deletions
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15
library/std/src/os/vxworks/fs.rs
View File

@ -26,10 +26,16 @@ pub trait MetadataExt {
#[stable(feature = "metadata_ext2", since = "1.8.0")]
fn st_atime(&self) -> i64;
#[stable(feature = "metadata_ext2", since = "1.8.0")]
fn st_atime_nsec(&self) -> i64;
#[stable(feature = "metadata_ext2", since = "1.8.0")]
fn st_mtime(&self) -> i64;
#[stable(feature = "metadata_ext2", since = "1.8.0")]
fn st_mtime_nsec(&self) -> i64;
#[stable(feature = "metadata_ext2", since = "1.8.0")]
fn st_ctime(&self) -> i64;
#[stable(feature = "metadata_ext2", since = "1.8.0")]
fn st_ctime_nsec(&self) -> i64;
#[stable(feature = "metadata_ext2", since = "1.8.0")]
fn st_blksize(&self) -> u64;
#[stable(feature = "metadata_ext2", since = "1.8.0")]
fn st_blocks(&self) -> u64;
@ -66,12 +72,21 @@ impl MetadataExt for Metadata {
fn st_atime(&self) -> i64 {
self.as_inner().as_inner().st_atime as i64
}
fn st_atime_nsec(&self) -> i64 {
0
}
fn st_mtime(&self) -> i64 {
self.as_inner().as_inner().st_mtime as i64
}
fn st_mtime_nsec(&self) -> i64 {
0
}
fn st_ctime(&self) -> i64 {
self.as_inner().as_inner().st_ctime as i64
}
fn st_ctime_nsec(&self) -> i64 {
0
}
fn st_blksize(&self) -> u64 {
self.as_inner().as_inner().st_blksize as u64
}

3
library/std/src/os/vxworks/raw.rs
View File

@ -5,3 +5,6 @@ use crate::os::raw::c_ulong;
#[stable(feature = "pthread_t", since = "1.8.0")]
pub type pthread_t = c_ulong;
#[stable(feature = "raw_ext", since = "1.1.0")]
pub use libc::{blkcnt_t, blksize_t, dev_t, ino_t, mode_t, nlink_t, off_t, time_t};

7
library/std/src/sys/unix/ext/fs.rs
View File

@ -650,6 +650,9 @@ pub trait MetadataExt {
/// ```
#[stable(feature = "metadata_ext", since = "1.1.0")]
fn blocks(&self) -> u64;
#[cfg(target_os = "vxworks")]
#[stable(feature = "metadata_ext", since = "1.1.0")]
fn attrib(&self) -> u8;
}
#[stable(feature = "metadata_ext", since = "1.1.0")]
@ -702,6 +705,10 @@ impl MetadataExt for fs::Metadata {
fn blocks(&self) -> u64 {
self.st_blocks()
}
#[cfg(target_os = "vxworks")]
fn attrib(&self) -> u8 {
self.st_attrib()
}
}
/// Unix-specific extensions for [`fs::FileType`].

6
library/std/src/sys/unix/fd.rs
View File

@ -200,7 +200,8 @@ impl FileDesc {
target_os = "l4re",
target_os = "linux",
target_os = "haiku",
target_os = "redox"
target_os = "redox",
target_os = "vxworks"
)))]
pub fn set_cloexec(&self) -> io::Result<()> {
unsafe {
@ -217,7 +218,8 @@ impl FileDesc {
target_os = "l4re",
target_os = "linux",
target_os = "haiku",
target_os = "redox"
target_os = "redox",
target_os = "vxworks"
))]
pub fn set_cloexec(&self) -> io::Result<()> {
unsafe {

56
library/std/src/sys/unix/fs.rs
View File

@ -297,6 +297,7 @@ impl FileAttr {
#[cfg(not(target_os = "netbsd"))]
impl FileAttr {
#[cfg(not(target_os = "vxworks"))]
pub fn modified(&self) -> io::Result<SystemTime> {
Ok(SystemTime::from(libc::timespec {
tv_sec: self.stat.st_mtime as libc::time_t,
@ -304,6 +305,15 @@ impl FileAttr {
}))
}
#[cfg(target_os = "vxworks")]
pub fn modified(&self) -> io::Result<SystemTime> {
Ok(SystemTime::from(libc::timespec {
tv_sec: self.stat.st_mtime as libc::time_t,
tv_nsec: 0,
}))
}
#[cfg(not(target_os = "vxworks"))]
pub fn accessed(&self) -> io::Result<SystemTime> {
Ok(SystemTime::from(libc::timespec {
tv_sec: self.stat.st_atime as libc::time_t,
@ -311,6 +321,14 @@ impl FileAttr {
}))
}
#[cfg(target_os = "vxworks")]
pub fn accessed(&self) -> io::Result<SystemTime> {
Ok(SystemTime::from(libc::timespec {
tv_sec: self.stat.st_atime as libc::time_t,
tv_nsec: 0,
}))
}
#[cfg(any(
target_os = "freebsd",
target_os = "openbsd",
@ -535,12 +553,22 @@ impl DirEntry {
lstat(&self.path())
}
#[cfg(any(target_os = "solaris", target_os = "illumos", target_os = "haiku"))]
#[cfg(any(
target_os = "solaris",
target_os = "illumos",
target_os = "haiku",
target_os = "vxworks"
))]
pub fn file_type(&self) -> io::Result<FileType> {
lstat(&self.path()).map(|m| m.file_type())
}
#[cfg(not(any(target_os = "solaris", target_os = "illumos", target_os = "haiku")))]
#[cfg(not(any(
target_os = "solaris",
target_os = "illumos",
target_os = "haiku",
target_os = "vxworks"
)))]
pub fn file_type(&self) -> io::Result<FileType> {
match self.entry.d_type {
libc::DT_CHR => Ok(FileType { mode: libc::S_IFCHR }),
@ -565,7 +593,8 @@ impl DirEntry {
target_os = "haiku",
target_os = "l4re",
target_os = "fuchsia",
target_os = "redox"
target_os = "redox",
target_os = "vxworks"
))]
pub fn ino(&self) -> u64 {
self.entry.d_ino as u64
@ -603,7 +632,8 @@ impl DirEntry {
target_os = "linux",
target_os = "emscripten",
target_os = "l4re",
target_os = "haiku"
target_os = "haiku",
target_os = "vxworks"
))]
fn name_bytes(&self) -> &[u8] {
unsafe { CStr::from_ptr(self.entry.d_name.as_ptr()).to_bytes() }
@ -901,13 +931,25 @@ impl fmt::Debug for File {
Some(PathBuf::from(OsString::from_vec(buf)))
}
#[cfg(not(any(target_os = "linux", target_os = "macos")))]
#[cfg(target_os = "vxworks")]
fn get_path(fd: c_int) -> Option<PathBuf> {
let mut buf = vec![0; libc::PATH_MAX as usize];
let n = unsafe { libc::ioctl(fd, libc::FIOGETNAME, buf.as_ptr()) };
if n == -1 {
return None;
}
let l = buf.iter().position(|&c| c == 0).unwrap();
buf.truncate(l as usize);
Some(PathBuf::from(OsString::from_vec(buf)))
}
#[cfg(not(any(target_os = "linux", target_os = "macos", target_os = "vxworks")))]
fn get_path(_fd: c_int) -> Option<PathBuf> {
// FIXME(#24570): implement this for other Unix platforms
None
}
#[cfg(any(target_os = "linux", target_os = "macos"))]
#[cfg(any(target_os = "linux", target_os = "macos", target_os = "vxworks"))]
fn get_mode(fd: c_int) -> Option<(bool, bool)> {
let mode = unsafe { libc::fcntl(fd, libc::F_GETFL) };
if mode == -1 {
@ -921,7 +963,7 @@ impl fmt::Debug for File {
}
}
#[cfg(not(any(target_os = "linux", target_os = "macos")))]
#[cfg(not(any(target_os = "linux", target_os = "macos", target_os = "vxworks")))]
fn get_mode(_fd: c_int) -> Option<(bool, bool)> {
// FIXME(#24570): implement this for other Unix platforms
None

201
library/std/src/sys/vxworks/fd.rs
View File

@ -1,201 +0,0 @@
#![unstable(reason = "not public", issue = "none", feature = "fd")]
use crate::cmp;
use crate::io::{self, Initializer, IoSlice, IoSliceMut, Read};
use crate::mem;
use crate::sys::cvt;
use crate::sys_common::AsInner;
use libc::{self, c_int, c_void, ssize_t};
#[derive(Debug)]
pub struct FileDesc {
fd: c_int,
}
// The maximum read limit on most POSIX-like systems is `SSIZE_MAX`,
// with the man page quoting that if the count of bytes to read is
// greater than `SSIZE_MAX` the result is "unspecified".
const READ_LIMIT: usize = ssize_t::MAX as usize;
impl FileDesc {
pub fn new(fd: c_int) -> FileDesc {
FileDesc { fd: fd }
}
pub fn raw(&self) -> c_int {
self.fd
}
/// Extracts the actual file descriptor without closing it.
pub fn into_raw(self) -> c_int {
let fd = self.fd;
mem::forget(self);
fd
}
pub fn read(&self, buf: &mut [u8]) -> io::Result<usize> {
let ret = cvt(unsafe {
libc::read(self.fd, buf.as_mut_ptr() as *mut c_void, cmp::min(buf.len(), READ_LIMIT))
})?;
Ok(ret as usize)
}
pub fn read_vectored(&self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
let ret = cvt(unsafe {
libc::readv(
self.fd,
bufs.as_ptr() as *const libc::iovec,
cmp::min(bufs.len(), c_int::MAX as usize) as c_int,
)
})?;
Ok(ret as usize)
}
#[inline]
pub fn is_read_vectored(&self) -> bool {
true
}
pub fn read_to_end(&self, buf: &mut Vec<u8>) -> io::Result<usize> {
let mut me = self;
(&mut me).read_to_end(buf)
}
pub fn read_at(&self, buf: &mut [u8], offset: u64) -> io::Result<usize> {
unsafe fn cvt_pread(
fd: c_int,
buf: *mut c_void,
count: usize,
offset: i64,
) -> io::Result<isize> {
use libc::pread;
cvt(pread(fd, buf, count, offset))
}
unsafe {
cvt_pread(
self.fd,
buf.as_mut_ptr() as *mut c_void,
cmp::min(buf.len(), READ_LIMIT),
offset as i64,
)
.map(|n| n as usize)
}
}
pub fn write(&self, buf: &[u8]) -> io::Result<usize> {
let ret = cvt(unsafe {
libc::write(self.fd, buf.as_ptr() as *const c_void, cmp::min(buf.len(), READ_LIMIT))
})?;
Ok(ret as usize)
}
pub fn write_vectored(&self, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
let ret = cvt(unsafe {
libc::writev(
self.fd,
bufs.as_ptr() as *const libc::iovec,
cmp::min(bufs.len(), c_int::MAX as usize) as c_int,
)
})?;
Ok(ret as usize)
}
#[inline]
pub fn is_write_vectored(&self) -> bool {
true
}
pub fn write_at(&self, buf: &[u8], offset: u64) -> io::Result<usize> {
unsafe fn cvt_pwrite(
fd: c_int,
buf: *const c_void,
count: usize,
offset: i64,
) -> io::Result<isize> {
use libc::pwrite;
cvt(pwrite(fd, buf, count, offset))
}
unsafe {
cvt_pwrite(
self.fd,
buf.as_ptr() as *const c_void,
cmp::min(buf.len(), READ_LIMIT),
offset as i64,
)
.map(|n| n as usize)
}
}
pub fn get_cloexec(&self) -> io::Result<bool> {
unsafe { Ok((cvt(libc::fcntl(self.fd, libc::F_GETFD))? & libc::FD_CLOEXEC) != 0) }
}
pub fn set_cloexec(&self) -> io::Result<()> {
unsafe {
let previous = cvt(libc::fcntl(self.fd, libc::F_GETFD))?;
let new = previous | libc::FD_CLOEXEC;
if new != previous {
cvt(libc::fcntl(self.fd, libc::F_SETFD, new))?;
}
Ok(())
}
}
pub fn set_nonblocking(&self, nonblocking: bool) -> io::Result<()> {
unsafe {
let v = nonblocking as c_int;
cvt(libc::ioctl(self.fd, libc::FIONBIO, &v))?;
Ok(())
}
}
// refer to pxPipeDrv library documentation.
// VxWorks uses fcntl to set O_NONBLOCK to the pipes
pub fn set_nonblocking_pipe(&self, nonblocking: bool) -> io::Result<()> {
unsafe {
let mut flags = cvt(libc::fcntl(self.fd, libc::F_GETFL, 0))?;
flags = if nonblocking { flags | libc::O_NONBLOCK } else { flags & !libc::O_NONBLOCK };
cvt(libc::fcntl(self.fd, libc::F_SETFL, flags))?;
Ok(())
}
}
pub fn duplicate(&self) -> io::Result<FileDesc> {
let fd = self.raw();
match cvt(unsafe { libc::fcntl(fd, libc::F_DUPFD_CLOEXEC, 0) }) {
Ok(newfd) => Ok(FileDesc::new(newfd)),
Err(e) => return Err(e),
}
}
}
impl<'a> Read for &'a FileDesc {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
(**self).read(buf)
}
#[inline]
unsafe fn initializer(&self) -> Initializer {
Initializer::nop()
}
}
impl AsInner<c_int> for FileDesc {
fn as_inner(&self) -> &c_int {
&self.fd
}
}
impl Drop for FileDesc {
fn drop(&mut self) {
// 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.
let _ = unsafe { libc::close(self.fd) };
}
}

624
library/std/src/sys/vxworks/fs.rs
View File

@ -1,624 +0,0 @@
// copies from linuxx
use crate::ffi::{CStr, CString, OsStr, OsString};
use crate::fmt;
use crate::io::{self, Error, ErrorKind, IoSlice, IoSliceMut, SeekFrom};
use crate::mem;
use crate::path::{Path, PathBuf};
use crate::ptr;
use crate::sync::Arc;
use crate::sys::fd::FileDesc;
use crate::sys::time::SystemTime;
use crate::sys::vxworks::ext::ffi::OsStrExt;
use crate::sys::vxworks::ext::ffi::OsStringExt;
use crate::sys::{cvt, cvt_r};
use crate::sys_common::{AsInner, FromInner};
use libc::{self, c_int, mode_t, off_t, stat64};
use libc::{dirent, ftruncate, lseek, open, readdir_r as readdir64_r};
pub struct File(FileDesc);
#[derive(Clone)]
pub struct FileAttr {
stat: stat64,
}
// all DirEntry's will have a reference to this struct
struct InnerReadDir {
dirp: Dir,
root: PathBuf,
}
pub struct ReadDir {
inner: Arc<InnerReadDir>,
end_of_stream: bool,
}
struct Dir(*mut libc::DIR);
unsafe impl Send for Dir {}
unsafe impl Sync for Dir {}
pub struct DirEntry {
entry: dirent,
dir: Arc<InnerReadDir>,
}
#[derive(Clone, Debug)]
pub struct OpenOptions {
// generic
read: bool,
write: bool,
append: bool,
truncate: bool,
create: bool,
create_new: bool,
// system-specific
custom_flags: i32,
mode: mode_t,
}
#[derive(Clone, PartialEq, Eq, Debug)]
pub struct FilePermissions {
mode: mode_t,
}
#[derive(Copy, Clone, PartialEq, Eq, Hash, Debug)]
pub struct FileType {
mode: mode_t,
}
#[derive(Debug)]
pub struct DirBuilder {
mode: mode_t,
}
impl FileAttr {
pub fn size(&self) -> u64 {
self.stat.st_size as u64
}
pub fn perm(&self) -> FilePermissions {
FilePermissions { mode: (self.stat.st_mode as mode_t) }
}
pub fn file_type(&self) -> FileType {
FileType { mode: self.stat.st_mode as mode_t }
}
pub fn modified(&self) -> io::Result<SystemTime> {
Ok(SystemTime::from(libc::timespec {
tv_sec: self.stat.st_mtime as libc::time_t,
tv_nsec: 0, // hack 2.0;
}))
}
pub fn accessed(&self) -> io::Result<SystemTime> {
Ok(SystemTime::from(libc::timespec {
tv_sec: self.stat.st_atime as libc::time_t,
tv_nsec: 0, // hack - a proper fix would be better
}))
}
pub fn created(&self) -> io::Result<SystemTime> {
Err(io::Error::new(
io::ErrorKind::Other,
"creation time is not available on this platform currently",
))
}
}
impl AsInner<stat64> for FileAttr {
fn as_inner(&self) -> &stat64 {
&self.stat
}
}
impl FilePermissions {
pub fn readonly(&self) -> bool {
// check if any class (owner, group, others) has write permission
self.mode & 0o222 == 0
}
pub fn set_readonly(&mut self, readonly: bool) {
if readonly {
// remove write permission for all classes; equivalent to `chmod a-w <file>`
self.mode &= !0o222;
} else {
// add write permission for all classes; equivalent to `chmod a+w <file>`
self.mode |= 0o222;
}
}
pub fn mode(&self) -> u32 {
self.mode as u32
}
}
impl FileType {
pub fn is_dir(&self) -> bool {
self.is(libc::S_IFDIR)
}
pub fn is_file(&self) -> bool {
self.is(libc::S_IFREG)
}
pub fn is_symlink(&self) -> bool {
self.is(libc::S_IFLNK)
}
pub fn is(&self, mode: mode_t) -> bool {
self.mode & libc::S_IFMT == mode
}
}
impl FromInner<u32> for FilePermissions {
fn from_inner(mode: u32) -> FilePermissions {
FilePermissions { mode: mode as mode_t }
}
}
impl fmt::Debug for ReadDir {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
// This will only be called from std::fs::ReadDir, which will add a "ReadDir()" frame.
// Thus the result will be e g 'ReadDir("/home")'
fmt::Debug::fmt(&*self.inner.root, f)
}
}
impl Iterator for ReadDir {
type Item = io::Result<DirEntry>;
fn next(&mut self) -> Option<io::Result<DirEntry>> {
if self.end_of_stream {
return None;
}
unsafe {
let mut ret = DirEntry { entry: mem::zeroed(), dir: Arc::clone(&self.inner) };
let mut entry_ptr = ptr::null_mut();
loop {
if readdir64_r(self.inner.dirp.0, &mut ret.entry, &mut entry_ptr) != 0 {
if entry_ptr.is_null() {
// We encountered an error (which will be returned in this iteration), but
// we also reached the end of the directory stream. The `end_of_stream`
// flag is enabled to make sure that we return `None` in the next iteration
// (instead of looping forever)
self.end_of_stream = true;
}
return Some(Err(Error::last_os_error()));
}
if entry_ptr.is_null() {
return None;
}
if ret.name_bytes() != b"." && ret.name_bytes() != b".." {
return Some(Ok(ret));
}
}
}
}
}
impl Drop for Dir {
fn drop(&mut self) {
let r = unsafe { libc::closedir(self.0) };
debug_assert_eq!(r, 0);
}
}
impl DirEntry {
pub fn path(&self) -> PathBuf {
use crate::sys::vxworks::ext::ffi::OsStrExt;
self.dir.root.join(OsStr::from_bytes(self.name_bytes()))
}
pub fn file_name(&self) -> OsString {
OsStr::from_bytes(self.name_bytes()).to_os_string()
}
pub fn metadata(&self) -> io::Result<FileAttr> {
lstat(&self.path())
}
pub fn file_type(&self) -> io::Result<FileType> {
lstat(&self.path()).map(|m| m.file_type())
}
pub fn ino(&self) -> u64 {
self.entry.d_ino as u64
}
fn name_bytes(&self) -> &[u8] {
unsafe {
//&*self.name
CStr::from_ptr(self.entry.d_name.as_ptr()).to_bytes()
}
}
}
impl OpenOptions {
pub fn new() -> OpenOptions {
OpenOptions {
// generic
read: false,
write: false,
append: false,
truncate: false,
create: false,
create_new: false,
// system-specific
custom_flags: 0,
mode: 0o666,
}
}
pub fn read(&mut self, read: bool) {
self.read = read;
}
pub fn write(&mut self, write: bool) {
self.write = write;
}
pub fn append(&mut self, append: bool) {
self.append = append;
}
pub fn truncate(&mut self, truncate: bool) {
self.truncate = truncate;
}
pub fn create(&mut self, create: bool) {
self.create = create;
}
pub fn create_new(&mut self, create_new: bool) {
self.create_new = create_new;
}
pub fn mode(&mut self, mode: u32) {
self.mode = mode as mode_t;
}
fn get_access_mode(&self) -> io::Result<c_int> {
match (self.read, self.write, self.append) {
(true, false, false) => Ok(libc::O_RDONLY),
(false, true, false) => Ok(libc::O_WRONLY),
(true, true, false) => Ok(libc::O_RDWR),
(false, _, true) => Ok(libc::O_WRONLY | libc::O_APPEND),
(true, _, true) => Ok(libc::O_RDWR | libc::O_APPEND),
(false, false, false) => Err(Error::from_raw_os_error(libc::EINVAL)),
}
}
fn get_creation_mode(&self) -> io::Result<c_int> {
match (self.write, self.append) {
(true, false) => {}
(false, false) => {
if self.truncate || self.create || self.create_new {
return Err(Error::from_raw_os_error(libc::EINVAL));
}
}
(_, true) => {
if self.truncate && !self.create_new {
return Err(Error::from_raw_os_error(libc::EINVAL));
}
}
}
Ok(match (self.create, self.truncate, self.create_new) {
(false, false, false) => 0,
(true, false, false) => libc::O_CREAT,
(false, true, false) => libc::O_TRUNC,
(true, true, false) => libc::O_CREAT | libc::O_TRUNC,
(_, _, true) => libc::O_CREAT | libc::O_EXCL,
})
}
}
impl File {
pub fn open(path: &Path, opts: &OpenOptions) -> io::Result<File> {
let path = cstr(path)?;
File::open_c(&path, opts)
}
pub fn open_c(path: &CStr, opts: &OpenOptions) -> io::Result<File> {
let flags = libc::O_CLOEXEC
| opts.get_access_mode()?
| opts.get_creation_mode()?
| (opts.custom_flags as c_int & !libc::O_ACCMODE);
let fd = cvt_r(|| unsafe { open(path.as_ptr(), flags, opts.mode as c_int) })?;
Ok(File(FileDesc::new(fd)))
}
pub fn file_attr(&self) -> io::Result<FileAttr> {
let mut stat: stat64 = unsafe { mem::zeroed() };
cvt(unsafe { ::libc::fstat(self.0.raw(), &mut stat) })?;
Ok(FileAttr { stat: stat })
}
pub fn fsync(&self) -> io::Result<()> {
cvt_r(|| unsafe { libc::fsync(self.0.raw()) })?;
Ok(())
}
pub fn datasync(&self) -> io::Result<()> {
cvt_r(|| unsafe { os_datasync(self.0.raw()) })?;
return Ok(());
unsafe fn os_datasync(fd: c_int) -> c_int {
libc::fsync(fd)
} //not supported
}
pub fn truncate(&self, size: u64) -> io::Result<()> {
return cvt_r(|| unsafe { ftruncate(self.0.raw(), size as off_t) }).map(drop);
}
pub fn read(&self, buf: &mut [u8]) -> io::Result<usize> {
self.0.read(buf)
}
pub fn read_vectored(&self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
self.0.read_vectored(bufs)
}
#[inline]
pub fn is_read_vectored(&self) -> bool {
self.0.is_read_vectored()
}
pub fn read_at(&self, buf: &mut [u8], offset: u64) -> io::Result<usize> {
self.0.read_at(buf, offset)
}
pub fn write(&self, buf: &[u8]) -> io::Result<usize> {
self.0.write(buf)
}
pub fn write_vectored(&self, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
self.0.write_vectored(bufs)
}
#[inline]
pub fn is_write_vectored(&self) -> bool {
self.0.is_write_vectored()
}
pub fn write_at(&self, buf: &[u8], offset: u64) -> io::Result<usize> {
self.0.write_at(buf, offset)
}
pub fn flush(&self) -> io::Result<()> {
Ok(())
}
pub fn seek(&self, pos: SeekFrom) -> io::Result<u64> {
let (whence, pos) = match pos {
// Casting to `i64` is fine, too large values will end up as
// negative which will cause an error in `"lseek64"`.
SeekFrom::Start(off) => (libc::SEEK_SET, off as i64),
SeekFrom::End(off) => (libc::SEEK_END, off),
SeekFrom::Current(off) => (libc::SEEK_CUR, off),
};
let n = cvt(unsafe { lseek(self.0.raw(), pos, whence) })?;
Ok(n as u64)
}
pub fn duplicate(&self) -> io::Result<File> {
self.0.duplicate().map(File)
}
pub fn fd(&self) -> &FileDesc {
&self.0
}
pub fn into_fd(self) -> FileDesc {
self.0
}
pub fn set_permissions(&self, perm: FilePermissions) -> io::Result<()> {
cvt_r(|| unsafe { libc::fchmod(self.0.raw(), perm.mode) })?;
Ok(())
}
pub fn diverge(&self) -> ! {
panic!()
}
}
impl DirBuilder {
pub fn new() -> DirBuilder {
DirBuilder { mode: 0o777 }
}
pub fn mkdir(&self, p: &Path) -> io::Result<()> {
let p = cstr(p)?;
cvt(unsafe { libc::mkdir(p.as_ptr(), self.mode) })?;
Ok(())
}
pub fn set_mode(&mut self, mode: u32) {
self.mode = mode as mode_t;
}
}
fn cstr(path: &Path) -> io::Result<CString> {
use crate::sys::vxworks::ext::ffi::OsStrExt;
Ok(CString::new(path.as_os_str().as_bytes())?)
}
impl FromInner<c_int> for File {
fn from_inner(fd: c_int) -> File {
File(FileDesc::new(fd))
}
}
impl fmt::Debug for File {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
fn get_path(fd: c_int) -> Option<PathBuf> {
let mut buf = vec![0; libc::PATH_MAX as usize];
let n = unsafe { libc::ioctl(fd, libc::FIOGETNAME, buf.as_ptr()) };
if n == -1 {
return None;
}
let l = buf.iter().position(|&c| c == 0).unwrap();
buf.truncate(l as usize);
Some(PathBuf::from(OsString::from_vec(buf)))
}
fn get_mode(fd: c_int) -> Option<(bool, bool)> {
let mode = unsafe { libc::fcntl(fd, libc::F_GETFL) };
if mode == -1 {
return None;
}
match mode & libc::O_ACCMODE {
libc::O_RDONLY => Some((true, false)),
libc::O_RDWR => Some((true, true)),
libc::O_WRONLY => Some((false, true)),
_ => None,
}
}
let fd = self.0.raw();
let mut b = f.debug_struct("File");
b.field("fd", &fd);
if let Some(path) = get_path(fd) {
b.field("path", &path);
}
if let Some((read, write)) = get_mode(fd) {
b.field("read", &read).field("write", &write);
}
b.finish()
}
}
pub fn readdir(p: &Path) -> io::Result<ReadDir> {
let root = p.to_path_buf();
let p = cstr(p)?;
unsafe {
let ptr = libc::opendir(p.as_ptr());
if ptr.is_null() {
Err(Error::last_os_error())
} else {
let inner = InnerReadDir { dirp: Dir(ptr), root };
Ok(ReadDir { inner: Arc::new(inner), end_of_stream: false })
}
}
}
pub fn unlink(p: &Path) -> io::Result<()> {
let p = cstr(p)?;
cvt(unsafe { libc::unlink(p.as_ptr()) })?;
Ok(())
}
pub fn rename(old: &Path, new: &Path) -> io::Result<()> {
let old = cstr(old)?;
let new = cstr(new)?;
cvt(unsafe { libc::rename(old.as_ptr(), new.as_ptr()) })?;
Ok(())
}
pub fn set_perm(p: &Path, perm: FilePermissions) -> io::Result<()> {
let p = cstr(p)?;
cvt_r(|| unsafe { libc::chmod(p.as_ptr(), perm.mode) })?;
Ok(())
}
pub fn rmdir(p: &Path) -> io::Result<()> {
let p = cstr(p)?;
cvt(unsafe { libc::rmdir(p.as_ptr()) })?;
Ok(())
}
pub fn remove_dir_all(path: &Path) -> io::Result<()> {
let filetype = lstat(path)?.file_type();
if filetype.is_symlink() { unlink(path) } else { remove_dir_all_recursive(path) }
}
fn remove_dir_all_recursive(path: &Path) -> io::Result<()> {
for child in readdir(path)? {
let child = child?;
if child.file_type()?.is_dir() {
remove_dir_all_recursive(&child.path())?;
} else {
unlink(&child.path())?;
}
}
rmdir(path)
}
pub fn readlink(p: &Path) -> io::Result<PathBuf> {
let c_path = cstr(p)?;
let p = c_path.as_ptr();
let mut buf = Vec::with_capacity(256);
loop {
let buf_read =
cvt(unsafe { libc::readlink(p, buf.as_mut_ptr() as *mut _, buf.capacity()) })? as usize;
unsafe {
buf.set_len(buf_read);
}
if buf_read != buf.capacity() {
buf.shrink_to_fit();
return Ok(PathBuf::from(OsString::from_vec(buf)));
}
// Trigger the internal buffer resizing logic of `Vec` by requiring
// more space than the current capacity. The length is guaranteed to be
// the same as the capacity due to the if statement above.
buf.reserve(1);
}
}
pub fn symlink(src: &Path, dst: &Path) -> io::Result<()> {
let src = cstr(src)?;
let dst = cstr(dst)?;
cvt(unsafe { libc::symlink(src.as_ptr(), dst.as_ptr()) })?;
Ok(())
}
pub fn link(src: &Path, dst: &Path) -> io::Result<()> {
let src = cstr(src)?;
let dst = cstr(dst)?;
cvt(unsafe { libc::link(src.as_ptr(), dst.as_ptr()) })?;
Ok(())
}
pub fn stat(p: &Path) -> io::Result<FileAttr> {
let p = cstr(p)?;
let mut stat: stat64 = unsafe { mem::zeroed() };
cvt(unsafe { libc::stat(p.as_ptr(), &mut stat as *mut _ as *mut _) })?;
Ok(FileAttr { stat })
}
pub fn lstat(p: &Path) -> io::Result<FileAttr> {
let p = cstr(p)?;
let mut stat: stat64 = unsafe { mem::zeroed() };
cvt(unsafe { ::libc::lstat(p.as_ptr(), &mut stat as *mut _ as *mut _) })?;
Ok(FileAttr { stat })
}
pub fn canonicalize(p: &Path) -> io::Result<PathBuf> {
use crate::sys::vxworks::ext::ffi::OsStrExt;
let path = CString::new(p.as_os_str().as_bytes())?;
let buf;
unsafe {
let r = libc::realpath(path.as_ptr(), ptr::null_mut());
if r.is_null() {
return Err(io::Error::last_os_error());
}
buf = CStr::from_ptr(r).to_bytes().to_vec();
libc::free(r as *mut _);
}
Ok(PathBuf::from(OsString::from_vec(buf)))
}
pub fn copy(from: &Path, to: &Path) -> io::Result<u64> {
use crate::fs::File;
if !from.is_file() {
return Err(Error::new(
ErrorKind::InvalidInput,
"the source path is not an existing regular file",
));
}
let mut reader = File::open(from)?;
let mut writer = File::create(to)?;
let perm = reader.metadata()?.permissions();
let ret = io::copy(&mut reader, &mut writer)?;
writer.set_permissions(perm)?;
Ok(ret)
}

75
library/std/src/sys/vxworks/io.rs
View File

@ -1,75 +0,0 @@
use crate::marker::PhantomData;
use crate::slice;
use libc::{c_void, iovec};
#[derive(Copy, Clone)]
#[repr(transparent)]
pub struct IoSlice<'a> {
vec: iovec,
_p: PhantomData<&'a [u8]>,
}
impl<'a> IoSlice<'a> {
#[inline]
pub fn new(buf: &'a [u8]) -> IoSlice<'a> {
IoSlice {
vec: iovec { iov_base: buf.as_ptr() as *mut u8 as *mut c_void, iov_len: buf.len() },
_p: PhantomData,
}
}
#[inline]
pub fn advance(&mut self, n: usize) {
if self.vec.iov_len < n {
panic!("advancing IoSlice beyond its length");
}
unsafe {
self.vec.iov_len -= n;
self.vec.iov_base = self.vec.iov_base.add(n);
}
}
#[inline]
pub fn as_slice(&self) -> &[u8] {
unsafe { slice::from_raw_parts(self.vec.iov_base as *mut u8, self.vec.iov_len) }
}
}
pub struct IoSliceMut<'a> {
vec: iovec,
_p: PhantomData<&'a mut [u8]>,
}
impl<'a> IoSliceMut<'a> {
#[inline]
pub fn new(buf: &'a mut [u8]) -> IoSliceMut<'a> {
IoSliceMut {
vec: iovec { iov_base: buf.as_mut_ptr() as *mut c_void, iov_len: buf.len() },
_p: PhantomData,
}
}
#[inline]
pub fn advance(&mut self, n: usize) {
if self.vec.iov_len < n {
panic!("advancing IoSliceMut beyond its length");
}
unsafe {
self.vec.iov_len -= n;
self.vec.iov_base = self.vec.iov_base.add(n);
}
}
#[inline]
pub fn as_slice(&self) -> &[u8] {
unsafe { slice::from_raw_parts(self.vec.iov_base as *mut u8, self.vec.iov_len) }
}
#[inline]
pub fn as_mut_slice(&mut self) -> &mut [u8] {
unsafe { slice::from_raw_parts_mut(self.vec.iov_base as *mut u8, self.vec.iov_len) }
}
}

3
library/std/src/sys/vxworks/mod.rs
View File

@ -22,8 +22,11 @@ pub mod condvar;
pub mod env;
#[path = "../unix/ext/mod.rs"]
pub mod ext;
#[path = "../unix/fd.rs"]
pub mod fd;
#[path = "../unix/fs.rs"]
pub mod fs;
#[path = "../unix/io.rs"]
pub mod io;
#[path = "../unix/memchr.rs"]
pub mod memchr;