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termstatus: Fix IsProcessBackground for 64-bit big-endian Linux

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Fixes #4223. Verified with QEMU on linux/amd64.
This commit is contained in:
greatroar 2023-05-25 17:20:42 +02:00
parent b50ff04cf3
commit ddbc0c1b37
1 changed files with 6 additions and 2 deletions
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8
internal/ui/termstatus/background_linux.go
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@ -18,6 +18,10 @@ func IsProcessBackground(fd uintptr) bool {
}
func isProcessBackground(fd uintptr) (bool, error) {
pid, err := unix.IoctlGetInt(int(fd), unix.TIOCGPGRP)
return pid != unix.Getpgrp(), err
// We need to use IoctlGetUint32 here, because pid_t is 32-bit even on
// 64-bit Linux. IoctlGetInt doesn't work on big-endian platforms:
// https://github.com/golang/go/issues/45585
// https://github.com/golang/go/issues/60429
pid, err := unix.IoctlGetUint32(int(fd), unix.TIOCGPGRP)
return int(pid) != unix.Getpgrp(), err
}