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[Qemu-devel] [PATCH 1/4] qmp: introduce 'writeconfig' command
From: |
Vadim Galitsyn |
Subject: |
[Qemu-devel] [PATCH 1/4] qmp: introduce 'writeconfig' command |
Date: |
Mon, 23 Oct 2017 17:13:07 +0200 |
Add support for `writeconfig' command for QMP monitor.
This is a simple way to keep track of current state of VM
after series of hotplugs and/or hotunplugs of different devices.
Signed-off-by: Vadim Galitsyn <address@hidden>
Signed-off-by: Eduardo Otubo <address@hidden>
Cc: Markus Armbruster <address@hidden>
Cc: Eric Blake <address@hidden>
Cc: address@hidden
---
qapi-schema.json | 18 ++++++++++++++++++
qmp.c | 21 +++++++++++++++++++++
2 files changed, 39 insertions(+)
diff --git a/qapi-schema.json b/qapi-schema.json
index a9dd043f65..083f8f3258 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -3200,3 +3200,21 @@
# Since: 2.11
##
{ 'command': 'watchdog-set-action', 'data' : {'action': 'WatchdogAction'} }
+
+##
+# @writeconfig:
+#
+# Dump current configuration into specified file
+#
+# @file: pathname of a file to store current configuration
+#
+# Since: 2.11
+#
+# Example:
+#
+# -> { "execute": "writeconfig",
+# "arguments": { "file": "/tmp/qemu.conf" } }
+# <- { "return": {} }
+#
+##
+{ 'command': 'writeconfig', 'data': {'file': 'str'} }
diff --git a/qmp.c b/qmp.c
index e8c303116a..fcb911cabb 100644
--- a/qmp.c
+++ b/qmp.c
@@ -722,3 +722,24 @@ MemoryInfo *qmp_query_memory_size_summary(Error **errp)
return mem_info;
}
+
+void qmp_writeconfig(const char *file, Error **errp)
+{
+ int fd;
+ FILE *fp;
+
+ fd = qemu_open(file, O_WRONLY | O_CREAT | O_TRUNC, 0600);
+ if (fd != -1) {
+
+ fp = fdopen(fd, "wb");
+ if (fp) {
+ qemu_config_write(fp);
+ fclose(fp);
+ return;
+ }
+
+ qemu_close(fd);
+ }
+
+ error_setg(errp, "cannot write configuration file: '%s'", file);
+}
--
2.13.1.394.g41dd433
- [Qemu-devel] QMP, HMP: introduce 'writeconfig' command, Vadim Galitsyn, 2017/10/23
- [Qemu-devel] [PATCH 1/4] qmp: introduce 'writeconfig' command,
Vadim Galitsyn <=
- [Qemu-devel] [PATCH 2/4] hmp: introduce 'writeconfig' command, Vadim Galitsyn, 2017/10/23
- [Qemu-devel] [PATCH 3/4] tests: test-hmp: extend with 'writeconfig' command, Vadim Galitsyn, 2017/10/23
- [Qemu-devel] [PATCH 4/4] tests: test-hmp: print command execution result, Vadim Galitsyn, 2017/10/23
- Re: [Qemu-devel] QMP, HMP: introduce 'writeconfig' command, Dr. David Alan Gilbert, 2017/10/24