wez/wezterm
1
1
Fork 0
mirror of https://github.com/wez/wezterm.git synced 2024-08-17 02:00:25 +03:00
Code Issues Projects Releases Wiki Activity

helper function to unset cloexec. Use it in redirect_stdio_impl.

Browse Source
This commit is contained in:
Michael Richardson 2021-08-22 13:49:32 -04:00 committed by Wez Furlong
parent 5629e0c1ca
commit 1d6315e948
1 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
filedescriptor/src/unix.rs
View File

@ -275,6 +275,20 @@ impl FileDescriptor {
OwnedHandle::dup2_impl(f, dest_fd).map(|handle| Self { handle })
}
/// Helper function to unset the close-on-exec flag for a raw descriptor
fn no_cloexec(fd: RawFd) -> Result<()> {
let flags = unsafe { libc::fcntl(fd, libc::F_GETFD) };
if flags == -1 {
return Err(Error::Fcntl(std::io::Error::last_os_error()));
}
let result = unsafe { libc::fcntl(fd, libc::F_SETFD, flags & !libc::FD_CLOEXEC) };
if result == -1 {
Err(Error::Cloexec(std::io::Error::last_os_error()))
} else {
Ok(())
}
}
pub(crate) fn redirect_stdio_impl<F: AsRawFileDescriptor>(
f: &F,
stdio: StdioDescriptor,
@ -287,6 +301,7 @@ impl FileDescriptor {
let std_original = FileDescriptor::dup(&std_descriptor)?;
unsafe { FileDescriptor::dup2(f, std_descriptor) }?.into_raw_fd();
Self::no_cloexec(std_descriptor)?;
Ok(std_original)
}