From 9ff701a5129653d6bd27c0b3cc249691cb6ce6a7 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Tue, 14 Mar 2017 13:21:06 +0100 Subject: add qxl_screendump monitor command RH-Author: Gerd Hoffmann Message-id: <1375866764-17766-2-git-send-email-kraxel@redhat.com> Patchwork-id: 53033 O-Subject: [RHEL-7 qemu-kvm PATCH 1/1] add qxl_screendump monitor command Bugzilla: 903910 RH-Acked-by: Hans de Goede RH-Acked-by: Laszlo Ersek RH-Acked-by: Michal Novotny This patch ports the rhel-6 specific qxl_screendump command to rhel-7. qxl_screendump takes the device id as additional argument and thus can be used to take screenshots from non-primary displays. The plan to get that functionality upstream in time failed, so we go for plan b and carry forward the rhel-6 specific qxl_screendump command. Thanks to the major console subsystem cleanups which made it upstream the implementation is (a) alot less hackier than the rhel-6 one and (b) not qxl-specific any more. Given that qxl is the only graphic device which can work as secondary vga card the later is only a theoretical benefit though ;) RHEL-6 commit: 1c6074d107dff93c7c7b0edfb5da871504802946 bugzilla: #903910 - RHEL7 does not have equivalent functionality for __com.redhat_qxl_screendump Signed-off-by: Gerd Hoffmann (cherry picked from commit 211321c693f46d283205830c6c49b54d7250e98c) Rebase notes (2.9.0): - documentation moved to qapi schema Rebase notes (2.8.0): - qmp-commands.hx replaced by docs/qmp-commands.txt (commit bd6092e) - mhandler.cmd attribute renamed to cmd (commit 2b9e357) Rebase notes (2.4.0): - replace QERR_DEVICE_NOT_FOUND with ERROR_CLASS_DEVICE_NOT_FOUND Merged patches (2.9.0): - a3b59c0 HMP: Fix user manual typo of __com.redhat_qxl_screendump Merged patches (2.6.0): - f12846f __com.redhat_qxl_screendump: add docs (cherry picked from commit 4c87d4e33880c72d93d53dfae81dc7c4ff2e6a2d) --- hmp-commands.hx | 14 ++++++++++++++ hmp.c | 10 ++++++++++ hmp.h | 1 + qapi-schema.json | 22 ++++++++++++++++++++++ ui/console.c | 24 ++++++++++++++++++++++++ 5 files changed, 71 insertions(+) diff --git a/hmp-commands.hx b/hmp-commands.hx index 8819281..c3c2f33 100644 --- a/hmp-commands.hx +++ b/hmp-commands.hx @@ -266,6 +266,20 @@ Save screen into PPM image @var{filename}. ETEXI { + .name = "__com.redhat_qxl_screendump", + .args_type = "id:s,filename:F", + .params = "id filename", + .help = "save screen from qxl device 'id' into PPM image 'filename'", + .cmd = hmp___com_redhat_qxl_screen_dump, + }, + +STEXI +@item __com.redhat_qxl_screendump @var{id} @var{filename} +@findex __com.redhat_qxl_screendump +Save screen from qxl device @var{id} into PPM image @var{filename}. +ETEXI + + { .name = "logfile", .args_type = "filename:F", .params = "filename", diff --git a/hmp.c b/hmp.c index edb8970..33ee308 100644 --- a/hmp.c +++ b/hmp.c @@ -1928,6 +1928,16 @@ void hmp_screendump(Monitor *mon, const QDict *qdict) hmp_handle_error(mon, &err); } +void hmp___com_redhat_qxl_screen_dump(Monitor *mon, const QDict *qdict) +{ + const char *id = qdict_get_str(qdict, "id"); + const char *filename = qdict_get_str(qdict, "filename"); + Error *err = NULL; + + qmp___com_redhat_qxl_screendump(id, filename, &err); + hmp_handle_error(mon, &err); +} + void hmp_nbd_server_start(Monitor *mon, const QDict *qdict) { const char *uri = qdict_get_str(qdict, "uri"); diff --git a/hmp.h b/hmp.h index 799fd37..f7ca3b7 100644 --- a/hmp.h +++ b/hmp.h @@ -94,6 +94,7 @@ void hmp_getfd(Monitor *mon, const QDict *qdict); void hmp_closefd(Monitor *mon, const QDict *qdict); void hmp_sendkey(Monitor *mon, const QDict *qdict); void hmp_screendump(Monitor *mon, const QDict *qdict); +void hmp___com_redhat_qxl_screen_dump(Monitor *mon, const QDict *qdict); 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); diff --git a/qapi-schema.json b/qapi-schema.json index 250e4dc..cefbaf5 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -4831,6 +4831,28 @@ '*logappend': 'bool' } } ## +# @__com.redhat_qxl_screendump: +# +# Write a PPM of secondary qxl devices to a file. +# +# @id: qxl device id +# @filename: the path of a new PPM file to store the image +# +# Returns: Nothing on success +# +# Since: never (rhel-only, not upstream) +# +# Example: +# +# -> { "execute": "__com.redhat_qxl_screendump", +# "arguments": { "id": video1", "filename": "v1.ppm" } } +# <- { "return": {} } +# +## +{ 'command': '__com.redhat_qxl_screendump', 'data': { 'id' : 'str', + 'filename': 'str' } } + +## # @ChardevFile: # # Configuration info for file chardevs. diff --git a/ui/console.c b/ui/console.c index 419b098..8736fe5 100644 --- a/ui/console.c +++ b/ui/console.c @@ -357,6 +357,30 @@ void qmp_screendump(const char *filename, Error **errp) ppm_save(filename, surface, errp); } +void qmp___com_redhat_qxl_screendump(const char *id, const char *filename, Error **errp) +{ + DeviceState *dev; + QemuConsole *con; + DisplaySurface *surface; + + dev = qdev_find_recursive(sysbus_get_default(), id); + if (NULL == dev) { + error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND, + "Device '%s' not found", id); + return; + } + + con = qemu_console_lookup_by_device(dev, 0); + if (con == NULL) { + error_setg(errp, "Device %s has no QemuConsole attached to it.", id); + return; + } + + graphic_hw_update(con); + surface = qemu_console_surface(con); + ppm_save(filename, surface, errp); +} + void graphic_hw_text_update(QemuConsole *con, console_ch_t *chardata) { if (!con) { -- 1.8.3.1