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std::sys::unix::stdio: explain why we do into_raw

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This commit is contained in:
Ralf Jung
2019-02-08 11:41:01 +01:00
parent d30b99f9c2
commit 541503afa1
1 changed files with 3 additions and 3 deletions
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6
src/libstd/sys/unix/stdio.rs
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@@ -12,7 +12,7 @@ impl Stdin {
pub fn read(&self, data: &mut [u8]) -> io::Result<usize> { pub fn read(&self, data: &mut [u8]) -> io::Result<usize> {
let fd = FileDesc::new(libc::STDIN_FILENO); let fd = FileDesc::new(libc::STDIN_FILENO);
let ret = fd.read(data); let ret = fd.read(data);
fd.into_raw(); fd.into_raw(); // do not close this FD
ret ret
} }
} }
@@ -23,7 +23,7 @@ impl Stdout {
pub fn write(&self, data: &[u8]) -> io::Result<usize> { pub fn write(&self, data: &[u8]) -> io::Result<usize> {
let fd = FileDesc::new(libc::STDOUT_FILENO); let fd = FileDesc::new(libc::STDOUT_FILENO);
let ret = fd.write(data); let ret = fd.write(data);
fd.into_raw(); fd.into_raw(); // do not close this FD
ret ret
} }
@@ -38,7 +38,7 @@ impl Stderr {
pub fn write(&self, data: &[u8]) -> io::Result<usize> { pub fn write(&self, data: &[u8]) -> io::Result<usize> {
let fd = FileDesc::new(libc::STDERR_FILENO); let fd = FileDesc::new(libc::STDERR_FILENO);
let ret = fd.write(data); let ret = fd.write(data);
fd.into_raw(); fd.into_raw(); // do not close this FD
ret ret
} }