forked from TrueCloudLab/restic
27 lines
860 B
Go
27 lines
860 B
Go
package termstatus
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import (
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"github.com/restic/restic/internal/debug"
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"golang.org/x/sys/unix"
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)
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// IsProcessBackground reports whether the current process is running in the
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// background. fd must be a file descriptor for the terminal.
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func IsProcessBackground(fd uintptr) bool {
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bg, err := isProcessBackground(fd)
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if err != nil {
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debug.Log("Can't check if we are in the background. Using default behaviour. Error: %s\n", err.Error())
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return false
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}
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return bg
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}
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func isProcessBackground(fd uintptr) (bool, error) {
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// We need to use IoctlGetUint32 here, because pid_t is 32-bit even on
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// 64-bit Linux. IoctlGetInt doesn't work on big-endian platforms:
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// https://github.com/golang/go/issues/45585
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// https://github.com/golang/go/issues/60429
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pid, err := unix.IoctlGetUint32(int(fd), unix.TIOCGPGRP)
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return int(pid) != unix.Getpgrp(), err
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}
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