36 lines
1.1 KiB
Rust
36 lines
1.1 KiB
Rust
use super::oshandle::RawOsHandle;
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use crate::handle::{HandleRights, Rights, RightsExt};
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use std::convert::TryFrom;
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use std::fs::File;
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use std::io;
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use std::os::unix::prelude::{AsRawFd, FromRawFd, IntoRawFd};
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pub use super::sys_impl::osdir::OsDir;
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impl TryFrom<File> for OsDir {
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type Error = io::Error;
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fn try_from(file: File) -> io::Result<Self> {
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let ft = file.metadata()?.file_type();
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if !ft.is_dir() {
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return Err(io::Error::from_raw_os_error(libc::EINVAL));
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}
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let rights = get_rights(&file)?;
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let handle = unsafe { RawOsHandle::from_raw_fd(file.into_raw_fd()) };
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Self::new(rights, handle)
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}
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}
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fn get_rights(file: &File) -> io::Result<HandleRights> {
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use yanix::{fcntl, file::OFlags};
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let mut rights = HandleRights::new(Rights::directory_base(), Rights::directory_inheriting());
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let flags = unsafe { fcntl::get_status_flags(file.as_raw_fd())? };
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let accmode = flags & OFlags::ACCMODE;
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if accmode == OFlags::RDONLY {
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rights.base &= !Rights::FD_WRITE;
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} else if accmode == OFlags::WRONLY {
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rights.base &= !Rights::FD_READ;
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}
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Ok(rights)
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}
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