| // copies from linuxx |
| use crate::ffi::{CString, CStr, OsString, OsStr}; |
| use crate::sys::vxworks::ext::ffi::OsStrExt; |
| use crate::fmt; |
| use crate::io::{self, Error, ErrorKind, SeekFrom, IoSlice, IoSliceMut}; |
| 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::{cvt, cvt_r}; |
| use crate::sys_common::{AsInner, FromInner}; |
| use libc::{self, c_int, mode_t, stat64, off_t}; |
| use libc::{ftruncate, lseek, dirent, readdir_r as readdir64_r, open}; |
| use crate::sys::vxworks::ext::ffi::OsStringExt; |
| 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, |
| } |
| |
| #[derive(Clone)] |
| 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: ReadDir, |
| } |
| |
| #[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: self.clone(), |
| }; |
| 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.inner.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(|_| ()); |
| } |
| |
| 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) |
| } |
| |
| 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) |
| } |
| |
| 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> { |
| // FIXME(#:(): implement this for VxWorks |
| None |
| } |
| fn get_mode(_fd: c_int) -> Option<(bool, bool)> { |
| // FIXME(#:(): implement this for VxWorks |
| 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) |
| } |
