cf5289c553
This isn't complete yet, but subsequent steps will depend on Rust libstd and libc bindings changes that are in flight.
38 lines
1.2 KiB
Rust
38 lines
1.2 KiB
Rust
use crate::{
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file::{FdFlags, OFlags},
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from_result, from_success_code,
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};
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use std::io::Result;
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#[cfg(unix)]
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use std::os::unix::prelude::*;
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#[cfg(target_os = "wasi")]
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use std::os::wasi::prelude::*;
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pub unsafe fn dup_fd(fd: RawFd, close_on_exec: bool) -> Result<RawFd> {
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// Both fcntl commands expect a RawFd arg which will specify
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// the minimum duplicated RawFd number. In our case, I don't
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// think we have to worry about this that much, so passing in
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// the RawFd descriptor we want duplicated
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from_result(if close_on_exec {
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libc::fcntl(fd, libc::F_DUPFD_CLOEXEC, fd)
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} else {
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libc::fcntl(fd, libc::F_DUPFD, fd)
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})
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}
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pub unsafe fn get_fd_flags(fd: RawFd) -> Result<FdFlags> {
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from_result(libc::fcntl(fd, libc::F_GETFD)).map(FdFlags::from_bits_truncate)
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}
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pub unsafe fn set_fd_flags(fd: RawFd, flags: FdFlags) -> Result<()> {
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from_success_code(libc::fcntl(fd, libc::F_SETFD, flags.bits()))
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}
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pub unsafe fn get_status_flags(fd: RawFd) -> Result<OFlags> {
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from_result(libc::fcntl(fd, libc::F_GETFL)).map(OFlags::from_bits_truncate)
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}
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pub unsafe fn set_status_flags(fd: RawFd, flags: OFlags) -> Result<()> {
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from_success_code(libc::fcntl(fd, libc::F_SETFL, flags.bits()))
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}
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