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bh=PwGmz9tmglOIJ2F0kmo9wDUc9dyIypq6pHdcqyM+wpA=; b=BE2bCKi4Iy8385wEN25gtrBX2ZAiDfXMBdCe0Bc0ykO7DgrjBVRXCIHFuxBDcvchtcN1Up doFFsGkYXdK2qm8gc5XLgJQh+QOC0Wbf5XKdsa3C8frK8/Yb09OLcW7SH2ITfCdncQIBUa pI8Lafj38ZJWftkNCkgEqhEFnCVYDdk= X-MC-Unique: VU45RMZvMXGzeGCmloKV3Q-1 From: Kevin Wolf To: qemu-devel@nongnu.org Subject: [PATCH 04/13] char: Add qemu_chr_translate_legacy_options() Date: Thu, 12 Nov 2020 18:58:56 +0100 Message-Id: <20201112175905.404472-5-kwolf@redhat.com> In-Reply-To: <20201112175905.404472-1-kwolf@redhat.com> References: <20201112175905.404472-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kwolf@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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charset="utf-8" This translates legacy command line options that can't be made compatible with QAPI just by using aliases from the traditional command line structure into the structure of ChardevOptions. As a first step, add support for backend name aliases if 'backend' is given instead of 'type'. Also add a todo comment for everything that is still incompatible between the QemuOpts based -chardev and chardev creation by going through a keyval parser, qemu_chr_translate_legacy_options() and qemu_chr_new_cli(). Signed-off-by: Kevin Wolf --- include/chardev/char.h | 13 +++++++++++++ chardev/char.c | 23 +++++++++++++++++++++++ 2 files changed, 36 insertions(+) diff --git a/include/chardev/char.h b/include/chardev/char.h index 54fa2ed8e2..7795e17ca5 100644 --- a/include/chardev/char.h +++ b/include/chardev/char.h @@ -94,6 +94,19 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts, */ Chardev *qemu_chr_new_cli(ChardevOptions *options, Error **errp); =20 +/** + * qemu_chr_translate_legacy_options: + * @args: Character device creation options as returned by the keyval pars= er + * + * Change @args so that the legacy command line options in it are translat= ed + * and @args can be used as the input for a ChardevOptions visitor. + * + * If @args was not a valid legacy command line, translation may be partia= lly + * skipped and the visitor may return an error if @args was not already + * suitable for QAPI parsing. + */ +void qemu_chr_translate_legacy_options(QDict *args); + /** * qemu_chr_parse_common: * @opts: the options that still need parsing diff --git a/chardev/char.c b/chardev/char.c index 9f00e475d4..40c3f02ec9 100644 --- a/chardev/char.c +++ b/chardev/char.c @@ -32,6 +32,7 @@ #include "chardev/char.h" #include "qapi/error.h" #include "qapi/qapi-commands-char.h" +#include "qapi/qmp/qdict.h" #include "qapi/qmp/qerror.h" #include "sysemu/replay.h" #include "qemu/help_option.h" @@ -717,6 +718,28 @@ out: return chr; } =20 +void qemu_chr_translate_legacy_options(QDict *args) +{ + const char *name; + + /* "backend" instead of "type" enables legacy CLI compatibility */ + name =3D qdict_get_try_str(args, "backend"); + if (!name || qdict_haskey(args, "type")) { + return; + } + + name =3D chardev_alias_translate(name); + qdict_put_str(args, "type", name); + qdict_del(args, "backend"); + + /* + * TODO: + * All backend types: "mux" + * socket: "addr.type", "delay", "server", "wait", "fd" + * udp: defaults for "host"/"localaddr"/"localport" + */ +} + Chardev *qemu_chr_new_noreplay(const char *label, const char *filename, bool permit_mux_mon, GMainContext *context) { --=20 2.28.0