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[Qemu-devel] [PATCH v4 10/13] hmp: add hmp analogue for qmp-chardev-chan
From: |
Anton Nefedov |
Subject: |
[Qemu-devel] [PATCH v4 10/13] hmp: add hmp analogue for qmp-chardev-change |
Date: |
Mon, 26 Jun 2017 19:45:47 +0300 |
Signed-off-by: Anton Nefedov <address@hidden>
Reviewed-by: Vladimir Sementsov-Ogievskiy <address@hidden>
CC: Dr. David Alan Gilbert <address@hidden>
---
include/chardev/char.h | 10 ++++++++++
hmp.h | 1 +
chardev/char.c | 2 +-
hmp-commands.hx | 18 +++++++++++++++++-
hmp.c | 34 ++++++++++++++++++++++++++++++++++
tests/test-hmp.c | 1 +
6 files changed, 64 insertions(+), 2 deletions(-)
diff --git a/include/chardev/char.h b/include/chardev/char.h
index 22fd734..1604ea9 100644
--- a/include/chardev/char.h
+++ b/include/chardev/char.h
@@ -81,6 +81,16 @@ Chardev *qemu_chr_new_from_opts(QemuOpts *opts,
void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend);
/**
+ * @qemu_chr_parse_opts:
+ *
+ * Parse the options to the ChardevBackend struct.
+ *
+ * Returns: a new backend or NULL on error
+ */
+ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts,
+ Error **errp);
+
+/**
* @qemu_chr_new:
*
* Create a new character backend from a URI.
diff --git a/hmp.h b/hmp.h
index d8b94ce..23e035c 100644
--- a/hmp.h
+++ b/hmp.h
@@ -102,6 +102,7 @@ void hmp_nbd_server_start(Monitor *mon, const QDict *qdict);
void hmp_nbd_server_add(Monitor *mon, const QDict *qdict);
void hmp_nbd_server_stop(Monitor *mon, const QDict *qdict);
void hmp_chardev_add(Monitor *mon, const QDict *qdict);
+void hmp_chardev_change(Monitor *mon, const QDict *qdict);
void hmp_chardev_remove(Monitor *mon, const QDict *qdict);
void hmp_qemu_io(Monitor *mon, const QDict *qdict);
void hmp_cpu_add(Monitor *mon, const QDict *qdict);
diff --git a/chardev/char.c b/chardev/char.c
index 6b2cb7b..8e8b881 100644
--- a/chardev/char.c
+++ b/chardev/char.c
@@ -567,7 +567,7 @@ static const char *chardev_alias_translate(const char *name)
return name;
}
-static ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, Error **errp)
+ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, Error **errp)
{
Error *local_err = NULL;
const ChardevClass *cc;
diff --git a/hmp-commands.hx b/hmp-commands.hx
index e763606..2cad758 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -1724,7 +1724,23 @@ ETEXI
STEXI
@item chardev-add args
@findex chardev-add
-chardev_add accepts the same parameters as the -chardev command line switch.
+chardev-add accepts the same parameters as the -chardev command line switch.
+
+ETEXI
+
+ {
+ .name = "chardev-change",
+ .args_type = "id:s,args:s",
+ .params = "id args",
+ .help = "change chardev",
+ .cmd = hmp_chardev_change,
+ },
+
+STEXI
address@hidden chardev-change args
address@hidden chardev-change
+chardev-change accepts existing chardev @var{id} and then the same arguments
+as the -chardev command line switch (except for "id").
ETEXI
diff --git a/hmp.c b/hmp.c
index 8c72c58..91e4317 100644
--- a/hmp.c
+++ b/hmp.c
@@ -2225,6 +2225,40 @@ void hmp_chardev_add(Monitor *mon, const QDict *qdict)
hmp_handle_error(mon, &err);
}
+void hmp_chardev_change(Monitor *mon, const QDict *qdict)
+{
+ const char *args = qdict_get_str(qdict, "args");
+ const char *id;
+ Error *err = NULL;
+ ChardevBackend *backend = NULL;
+ ChardevReturn *ret = NULL;
+ QemuOpts *opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"), args,
+ true);
+ if (!opts) {
+ error_setg(&err, "Parsing chardev args failed");
+ goto end;
+ }
+
+ id = qdict_get_str(qdict, "id");
+ if (qemu_opts_id(opts)) {
+ error_setg(&err, "Unexpected 'id' parameter");
+ goto end;
+ }
+
+ backend = qemu_chr_parse_opts(opts, &err);
+ if (!backend) {
+ goto end;
+ }
+
+ ret = qmp_chardev_change(id, backend, &err);
+
+end:
+ qapi_free_ChardevReturn(ret);
+ qapi_free_ChardevBackend(backend);
+ qemu_opts_del(opts);
+ hmp_handle_error(mon, &err);
+}
+
void hmp_chardev_remove(Monitor *mon, const QDict *qdict)
{
Error *local_err = NULL;
diff --git a/tests/test-hmp.c b/tests/test-hmp.c
index 99e35ec..299df19 100644
--- a/tests/test-hmp.c
+++ b/tests/test-hmp.c
@@ -22,6 +22,7 @@ static int verbose;
static const char *hmp_cmds[] = {
"boot_set ndc",
"chardev-add null,id=testchardev1",
+ "chardev-change testchardev1 ringbuf",
"chardev-remove testchardev1",
"commit all",
"cpu-add 1",
--
2.7.4
- [Qemu-devel] [PATCH v4 00/13] chardevice hotswap, Anton Nefedov, 2017/06/26
- [Qemu-devel] [PATCH v4 01/13] char: move QemuOpts->ChardevBackend translation to a separate func, Anton Nefedov, 2017/06/26
- [Qemu-devel] [PATCH v4 02/13] char: add backend hotswap handler, Anton Nefedov, 2017/06/26
- [Qemu-devel] [PATCH v4 04/13] char: forbid direct chardevice access for hotswap devices, Anton Nefedov, 2017/06/26
- [Qemu-devel] [PATCH v4 03/13] char: chardevice hotswap, Anton Nefedov, 2017/06/26
- [Qemu-devel] [PATCH v4 06/13] test-char: unref chardev-udp after test, Anton Nefedov, 2017/06/26
- [Qemu-devel] [PATCH v4 05/13] char: avoid chardevice direct access, Anton Nefedov, 2017/06/26
- [Qemu-devel] [PATCH v4 07/13] test-char: split char_udp_test, Anton Nefedov, 2017/06/26
- [Qemu-devel] [PATCH v4 08/13] test-char: split char_file_test, Anton Nefedov, 2017/06/26
- [Qemu-devel] [PATCH v4 09/13] test-char: add hotswap test, Anton Nefedov, 2017/06/26
- [Qemu-devel] [PATCH v4 10/13] hmp: add hmp analogue for qmp-chardev-change,
Anton Nefedov <=
- [Qemu-devel] [PATCH v4 11/13] virtio-console: chardev hotswap support, Anton Nefedov, 2017/06/26
- [Qemu-devel] [PATCH v4 12/13] serial: move TIOCM update to a separate function, Anton Nefedov, 2017/06/26
- [Qemu-devel] [PATCH v4 13/13] serial: chardev hotswap support, Anton Nefedov, 2017/06/26
- Re: [Qemu-devel] [PATCH v4 00/13] chardevice hotswap, Marc-André Lureau, 2017/06/29