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qtest: Don't assert on "-qtest chardev:myid" 

If the -qtest command line argument is passed a string that says
"use this chardev for I/O", then it will assert:

$ ./build/clang/qemu-system-i386 -chardev file,path=/dev/null,id=myid -qtest chardev:myid
Unexpected error in qtest_set_chardev() at ../../softmmu/qtest.c:1011:
qemu-system-i386: Cannot find character device 'qtest'
Aborted (core dumped)

This is because in qtest_server_init() we assume that when we create
the chardev with qemu_chr_new() it will always have the name "qtest".
This is true if qemu_chr_new() had to create a new chardev, but not
true if one already existed and is being referred to with
"chardev:myid".

Use the name of the chardev we get back from qemu_chr_new() as the
string to set the qtest 'chardev' property to, instead of hardcoding
it to "qtest".

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20230413150724.404304-2-peter.maydell@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Peter Maydell 2023-04-13 16:07:23 +01:00 committed by Thomas Huth
parent 9a29e02073
commit 537a1388e6
1 changed files with 1 additions and 1 deletions
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2
softmmu/qtest.c
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@ -867,7 +867,7 @@ void qtest_server_init(const char *qtest_chrdev, const char *qtest_log, Error **
}
qtest = object_new(TYPE_QTEST);
object_property_set_str(qtest, "chardev", "qtest", &error_abort);
object_property_set_str(qtest, "chardev", chr->label, &error_abort);
if (qtest_log) {
object_property_set_str(qtest, "log", qtest_log, &error_abort);
}