From 1f590cf9455c571799d1bfc0777255fa0796d4da Mon Sep 17 00:00:00 2001 From: Lei Li Date: Fri, 25 Jan 2013 00:03:20 +0800 Subject: [PATCH] QAPI: Introduce memchar-write QMP command Signed-off-by: Lei Li Signed-off-by: Luiz Capitulino --- hmp-commands.hx | 18 ++++++++++++++++++ hmp.c | 13 +++++++++++++ hmp.h | 1 + qapi-schema.json | 38 ++++++++++++++++++++++++++++++++++++++ qemu-char.c | 42 ++++++++++++++++++++++++++++++++++++++++++ qmp-commands.hx | 33 +++++++++++++++++++++++++++++++++ 6 files changed, 145 insertions(+) diff --git a/hmp-commands.hx b/hmp-commands.hx index 0934b9b91..bcfea11c3 100644 --- a/hmp-commands.hx +++ b/hmp-commands.hx @@ -837,6 +837,24 @@ STEXI @item nmi @var{cpu} @findex nmi Inject an NMI on the given CPU (x86 only). + +ETEXI + + { + .name = "memchar_write", + .args_type = "device:s,data:s", + .params = "device data", + .help = "Provide writing interface for CirMemCharDriver. Write" + "'data' to it.", + .mhandler.cmd = hmp_memchar_write, + }, + +STEXI +@item memchar_write @var{device} @var{data} +@findex memchar_write +Provide writing interface for CirMemCharDriver. Write @var{data} +to char device 'memory'. + ETEXI { diff --git a/hmp.c b/hmp.c index ae16916da..cd614e872 100644 --- a/hmp.c +++ b/hmp.c @@ -662,6 +662,19 @@ void hmp_pmemsave(Monitor *mon, const QDict *qdict) hmp_handle_error(mon, &errp); } +void hmp_memchar_write(Monitor *mon, const QDict *qdict) +{ + uint32_t size; + const char *chardev = qdict_get_str(qdict, "device"); + const char *data = qdict_get_str(qdict, "data"); + Error *errp = NULL; + + size = strlen(data); + qmp_memchar_write(chardev, size, data, false, 0, &errp); + + hmp_handle_error(mon, &errp); +} + static void hmp_cont_cb(void *opaque, int err) { if (!err) { diff --git a/hmp.h b/hmp.h index 44be683fc..06d6ea23e 100644 --- a/hmp.h +++ b/hmp.h @@ -43,6 +43,7 @@ void hmp_system_powerdown(Monitor *mon, const QDict *qdict); void hmp_cpu(Monitor *mon, const QDict *qdict); void hmp_memsave(Monitor *mon, const QDict *qdict); void hmp_pmemsave(Monitor *mon, const QDict *qdict); +void hmp_memchar_write(Monitor *mon, const QDict *qdict); void hmp_cont(Monitor *mon, const QDict *qdict); void hmp_system_wakeup(Monitor *mon, const QDict *qdict); void hmp_inject_nmi(Monitor *mon, const QDict *qdict); diff --git a/qapi-schema.json b/qapi-schema.json index a4c6eca31..d6231e528 100644 --- a/qapi-schema.json +++ b/qapi-schema.json @@ -324,6 +324,44 @@ ## { 'command': 'query-chardev', 'returns': ['ChardevInfo'] } +## +# @DataFormat: +# +# An enumeration of data format. +# +# @utf8: The data format is 'utf8'. +# +# @base64: The data format is 'base64'. +# +# Since: 1.4 +## +{ 'enum': 'DataFormat' + 'data': [ 'utf8', 'base64' ] } + +## +# @memchar-write: +# +# Provide writing interface for memchardev. Write data to char +# device 'memory'. +# +# @device: the name of the memory char device. +# +# @size: the size to write in bytes. +# +# @data: the source data write to memchar. +# +# @format: #optional the format of the data write to chardev 'memory', +# by default is 'utf8'. +# +# Returns: Nothing on success +# If @device is not a valid char device, DeviceNotFound +# +# Since: 1.4 +## +{ 'command': 'memchar-write', + 'data': {'device': 'str', 'size': 'int', 'data': 'str', + '*format': 'DataFormat'} } + ## # @CommandInfo: # diff --git a/qemu-char.c b/qemu-char.c index 80458697f..dbd1a7c06 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -2748,6 +2748,48 @@ fail: return NULL; } +static bool qemu_is_chr(const CharDriverState *chr, const char *filename) +{ + return strcmp(chr->filename, filename); +} + +void qmp_memchar_write(const char *device, int64_t size, + const char *data, bool has_format, + enum DataFormat format, + Error **errp) +{ + CharDriverState *chr; + guchar *write_data; + int ret; + gsize write_count; + + chr = qemu_chr_find(device); + if (!chr) { + error_set(errp, QERR_DEVICE_NOT_FOUND, device); + return; + } + + if (qemu_is_chr(chr, "memory")) { + error_setg(errp,"%s is not memory char device", device); + return; + } + + write_count = (gsize)size; + + if (has_format && (format == DATA_FORMAT_BASE64)) { + write_data = g_base64_decode(data, &write_count); + } else { + write_data = (uint8_t *)data; + } + + ret = cirmem_chr_write(chr, write_data, write_count); + + if (ret < 0) { + error_setg(errp, "Failed to write to device %s", device); + return; + } +} + QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename) { char host[65], port[33], width[8], height[8]; diff --git a/qmp-commands.hx b/qmp-commands.hx index 3be5330bb..96de0b885 100644 --- a/qmp-commands.hx +++ b/qmp-commands.hx @@ -463,6 +463,39 @@ Example: Note: inject-nmi fails when the guest doesn't support injecting. Currently, only x86 guests do. +EQMP + + { + .name = "memchar-write", + .args_type = "device:s,size:i,data:s,format:s?", + .mhandler.cmd_new = qmp_marshal_input_memchar_write, + }, + +SQMP +memchar-write +------------- + +Provide writing interface for CirMemCharDriver. Write data to memory +char device. + +Arguments: + +- "device": the name of the char device, must be unique (json-string) +- "size": the memory size, in bytes, should be power of 2 (json-int) +- "data": the source data write to memory (json-string) +- "format": the data format write to memory, default is + utf8. (json-string, optional) + - Possible values: "utf8", "base64" + +Example: + +-> { "execute": "memchar-write", + "arguments": { "device": foo, + "size": 8, + "data": "abcdefgh", + "format": "utf8" } } +<- { "return": {} } + EQMP { -- 2.39.2