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add comment, make var more readable

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This commit is contained in:
WindSoilder 2022-08-01 18:51:20 +08:00
parent 009abfb8a8
commit fbdb6e8ea0
1 changed files with 5 additions and 4 deletions
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9
crates/nu-system/src/foreground.rs
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@ -11,17 +11,18 @@ pub mod external_process_setup {
libc::signal(libc::SIGTTIN, libc::SIG_IGN);
external_command.pre_exec(|| {
// make the command startup with new process group.
// The process group id must be the same as external commands' pid.
// Or else we'll failed to set it as foreground process.
libc::setpgid(0, 0);
Ok(())
});
}
}
pub fn set_foreground(process: &std::process::Child) -> i32 {
pub fn set_foreground(process: &std::process::Child) {
unsafe {
let my_id = libc::getpid();
libc::tcsetpgrp(0, process.id() as i32);
my_id
libc::tcsetpgrp(libc::STDIN_FILENO, process.id() as i32);
}
}