From 5b18a6bf44b93122ba6638d227153cd146a68973 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Thu, 13 Apr 2023 16:07:24 +0100 Subject: chardev: Allow setting file chardev input file on the command line MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Our 'file' chardev backend supports both "output from this chardev is written to a file" and "input from this chardev should be read from a file" (except on Windows). However, you can only set up the input file if you're using the QMP interface -- there is no command line syntax to do it. Add command line syntax to allow specifying an input file as well as an output file, using a new 'input-path' suboption. The specific use case I have is that I'd like to be able to feed fuzzer reproducer input into qtest without having to use '-qtest stdio' and put the input onto stdin. Being able to use a file chardev like this: -chardev file,id=repro,path=/dev/null,input-path=repro.txt -qtest chardev:repro means that stdio is free for use by gdb. Signed-off-by: Peter Maydell Message-Id: <20230413150724.404304-3-peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Marc-André Lureau [thuth: Replace "input-file=" typo with "input-path="] Signed-off-by: Thomas Huth --- chardev/char.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'chardev/char.c') diff --git a/chardev/char.c b/chardev/char.c index e693906..661ad81 100644 --- a/chardev/char.c +++ b/chardev/char.c @@ -806,6 +806,9 @@ QemuOptsList qemu_chardev_opts = { .name = "path", .type = QEMU_OPT_STRING, },{ + .name = "input-path", + .type = QEMU_OPT_STRING, + },{ .name = "host", .type = QEMU_OPT_STRING, },{ -- cgit v1.1