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31 lines
636 B
Go
31 lines
636 B
Go
//go:build unix
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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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"src.elv.sh/pkg/sys/eunix"
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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.Fd()) {
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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 eunix.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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