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30 lines
611 B
Go
30 lines
611 B
Go
// +build !windows,!plan9
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package eval
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import (
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"os"
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"os/signal"
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"syscall"
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"src.elv.sh/pkg/sys"
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)
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// Process control functions in Unix.
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func putSelfInFg() error {
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if !sys.IsATTY(os.Stdin) {
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return nil
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}
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// If Elvish is in the background, the tcsetpgrp call below will either fail
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// (if the process is in an orphaned process group) or stop the process.
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// Ignoring TTOU fixes that.
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signal.Ignore(syscall.SIGTTOU)
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defer signal.Reset(syscall.SIGTTOU)
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return sys.Tcsetpgrp(0, syscall.Getpgrp())
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}
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func makeSysProcAttr(bg bool) *syscall.SysProcAttr {
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return &syscall.SysProcAttr{Setpgid: bg}
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}
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