837864aa6c
qemu_chr_open_fd() sets stdout into non-blocking mode. Restore the old fd flags on exit to avoid breaking unsuspecting applications that run on the same terminal after qemu and don't expect to get EAGAIN. While at at, also ensure term_exit is called once (at the moment it's called both from char_stdio_finalize() and as the atexit() hook. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2423 Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com> Link: https://lore.kernel.org/r/20240703190812.3459514-1-maxtram95@gmail.com Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> (cherry picked from commit a0124e333e2176640f233e5ea57a2f413985d9b5) Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>