qemu-io puts the TTY into non-canonical mode, which means no EOF processing is done and thus getchar() will never return the EOF constant. Instead we have to check for an explicit Ctrl-D, aka 0x4, to detect EOF and exit the qemu-io shell. This fixes the regression that prevented Ctrl-D from triggering an exit of qemu-io that has existed since readline was first added in
commit 0cf17e181798063c3824c8200ba46f25f54faa1a Author: Stefan Hajnoczi <stefa...@redhat.com> Date: Thu Nov 14 11:54:17 2013 +0100 qemu-io: use readline.c Signed-off-by: Daniel P. Berrange <berra...@redhat.com> --- qemu-io.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/qemu-io.c b/qemu-io.c index c70bde3eb1..2ea0bfbaf8 100644 --- a/qemu-io.c +++ b/qemu-io.c @@ -322,7 +322,9 @@ static char *fetchline_readline(void) readline_start(readline_state, get_prompt(), 0, readline_func, &line); while (!line) { int ch = getchar(); - if (ch == EOF) { + /* In non-canon tty mode we get 0x4 (Ctrl-D), not the stdio "EOF" + * constant */ + if (ch == 0x4) { break; } readline_handle_byte(readline_state, ch); -- 2.14.3