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Merge remote branch 'qmp/for-anthony' into staging

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This commit is contained in:
Anthony Liguori 2010-07-06 08:31:17 -05:00
commit 02d0ba1420
14 changed files with 469 additions and 263 deletions
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1
QMP/qmp-shell
View File

@ -42,6 +42,7 @@ def main():
qemu = qmp.QEMUMonitorProtocol(argv[1])
qemu.connect()
qemu.send("qmp_capabilities")
print 'Connected!'

6
QMP/qmp.py
View File

@ -63,10 +63,14 @@ class QEMUMonitorProtocol:
def __json_read(self):
try:
return json.loads(self.sock.recv(1024))
while True:
line = json.loads(self.sockfile.readline())
if not 'event' in line:
return line
except ValueError:
return
def __init__(self, filename):
self.filename = filename
self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
self.sockfile = self.sock.makefile()

1
QMP/vm-info
View File

@ -24,6 +24,7 @@ def main():
qemu = qmp.QEMUMonitorProtocol(argv[1])
qemu.connect()
qemu.send("qmp_capabilities")
for cmd in [ 'version', 'kvm', 'status', 'uuid', 'balloon' ]:
print cmd + ': ' + str(qemu.send('query-' + cmd))

2
blockdev.c
View File

@ -521,7 +521,7 @@ static int eject_device(Monitor *mon, BlockDriverState *bs, int force)
int do_eject(Monitor *mon, const QDict *qdict, QObject **ret_data)
{
BlockDriverState *bs;
int force = qdict_get_int(qdict, "force");
int force = qdict_get_try_bool(qdict, "force", 0);
const char *filename = qdict_get_str(qdict, "device");
bs = bdrv_find(filename);

33
check-qdict.c
View File

@ -50,7 +50,7 @@ START_TEST(qdict_put_obj_test)
qdict_put_obj(qdict, "", QOBJECT(qint_from_int(num)));
fail_unless(qdict_size(qdict) == 1);
ent = QLIST_FIRST(&qdict->table[12345 % QDICT_HASH_SIZE]);
ent = QLIST_FIRST(&qdict->table[12345 % QDICT_BUCKET_MAX]);
qi = qobject_to_qint(ent->value);
fail_unless(qint_get_int(qi) == num);
@ -194,6 +194,36 @@ START_TEST(qobject_to_qdict_test)
}
END_TEST
START_TEST(qdict_iterapi_test)
{
int count;
const QDictEntry *ent;
fail_unless(qdict_first(tests_dict) == NULL);
qdict_put(tests_dict, "key1", qint_from_int(1));
qdict_put(tests_dict, "key2", qint_from_int(2));
qdict_put(tests_dict, "key3", qint_from_int(3));
count = 0;
for (ent = qdict_first(tests_dict); ent; ent = qdict_next(tests_dict, ent)){
fail_unless(qdict_haskey(tests_dict, qdict_entry_key(ent)) == 1);
count++;
}
fail_unless(count == qdict_size(tests_dict));
/* Do it again to test restarting */
count = 0;
for (ent = qdict_first(tests_dict); ent; ent = qdict_next(tests_dict, ent)){
fail_unless(qdict_haskey(tests_dict, qdict_entry_key(ent)) == 1);
count++;
}
fail_unless(count == qdict_size(tests_dict));
}
END_TEST
/*
* Errors test-cases
*/
@ -338,6 +368,7 @@ static Suite *qdict_suite(void)
tcase_add_test(qdict_public2_tcase, qdict_haskey_test);
tcase_add_test(qdict_public2_tcase, qdict_del_test);
tcase_add_test(qdict_public2_tcase, qobject_to_qdict_test);
tcase_add_test(qdict_public2_tcase, qdict_iterapi_test);
qdict_errors_tcase = tcase_create("Errors");
suite_add_tcase(s, qdict_errors_tcase);

16
migration.c
View File

@ -75,7 +75,9 @@ int do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data)
{
MigrationState *s = NULL;
const char *p;
int detach = qdict_get_int(qdict, "detach");
int detach = qdict_get_try_bool(qdict, "detach", 0);
int blk = qdict_get_try_bool(qdict, "blk", 0);
int inc = qdict_get_try_bool(qdict, "inc", 0);
const char *uri = qdict_get_str(qdict, "uri");
if (current_migration &&
@ -86,21 +88,17 @@ int do_migrate(Monitor *mon, const QDict *qdict, QObject **ret_data)
if (strstart(uri, "tcp:", &p)) {
s = tcp_start_outgoing_migration(mon, p, max_throttle, detach,
(int)qdict_get_int(qdict, "blk"),
(int)qdict_get_int(qdict, "inc"));
blk, inc);
#if !defined(WIN32)
} else if (strstart(uri, "exec:", &p)) {
s = exec_start_outgoing_migration(mon, p, max_throttle, detach,
(int)qdict_get_int(qdict, "blk"),
(int)qdict_get_int(qdict, "inc"));
blk, inc);
} else if (strstart(uri, "unix:", &p)) {
s = unix_start_outgoing_migration(mon, p, max_throttle, detach,
(int)qdict_get_int(qdict, "blk"),
(int)qdict_get_int(qdict, "inc"));
blk, inc);
} else if (strstart(uri, "fd:", &p)) {
s = fd_start_outgoing_migration(mon, p, max_throttle, detach,
(int)qdict_get_int(qdict, "blk"),
(int)qdict_get_int(qdict, "inc"));
blk, inc);
#endif
} else {
monitor_printf(mon, "unknown migration protocol: %s\n", uri);

537
monitor.c
View File

@ -113,7 +113,7 @@ typedef struct mon_cmd_t {
int (*cmd_async)(Monitor *mon, const QDict *params,
MonitorCompletion *cb, void *opaque);
} mhandler;
int async;
int flags;
} mon_cmd_t;
/* file descriptors passed via SCM_RIGHTS */
@ -178,6 +178,9 @@ static inline void mon_print_count_init(Monitor *mon) { }
static inline int mon_print_count_get(const Monitor *mon) { return 0; }
#endif /* CONFIG_DEBUG_MONITOR */
/* QMP checker flags */
#define QMP_ACCEPT_UNKNOWNS 1
static QLIST_HEAD(mon_list, Monitor) mon_list;
static const mon_cmd_t mon_cmds[];
@ -328,7 +331,12 @@ static inline int monitor_handler_ported(const mon_cmd_t *cmd)
static inline bool monitor_handler_is_async(const mon_cmd_t *cmd)
{
return cmd->async != 0;
return cmd->flags & MONITOR_CMD_ASYNC;
}
static inline bool monitor_cmd_user_only(const mon_cmd_t *cmd)
{
return (cmd->flags & MONITOR_CMD_USER_ONLY);
}
static inline int monitor_has_error(const Monitor *mon)
@ -547,10 +555,10 @@ static void qmp_monitor_complete(void *opaque, QObject *ret_data)
monitor_protocol_emitter(opaque, ret_data);
}
static void qmp_async_cmd_handler(Monitor *mon, const mon_cmd_t *cmd,
const QDict *params)
static int qmp_async_cmd_handler(Monitor *mon, const mon_cmd_t *cmd,
const QDict *params)
{
cmd->mhandler.cmd_async(mon, params, qmp_monitor_complete, mon);
return cmd->mhandler.cmd_async(mon, params, qmp_monitor_complete, mon);
}
static void qmp_async_info_handler(Monitor *mon, const mon_cmd_t *cmd)
@ -613,6 +621,11 @@ static int do_info(Monitor *mon, const QDict *qdict, QObject **ret_data)
goto help;
}
if (monitor_ctrl_mode(mon) && monitor_cmd_user_only(cmd)) {
qerror_report(QERR_COMMAND_NOT_FOUND, item);
return -1;
}
if (monitor_handler_is_async(cmd)) {
if (monitor_ctrl_mode(mon)) {
qmp_async_info_handler(mon, cmd);
@ -710,13 +723,14 @@ static void do_info_commands(Monitor *mon, QObject **ret_data)
cmd_list = qlist_new();
for (cmd = mon_cmds; cmd->name != NULL; cmd++) {
if (monitor_handler_ported(cmd) && !compare_cmd(cmd->name, "info")) {
if (monitor_handler_ported(cmd) && !monitor_cmd_user_only(cmd) &&
!compare_cmd(cmd->name, "info")) {
qlist_append_obj(cmd_list, get_cmd_dict(cmd->name));
}
}
for (cmd = info_cmds; cmd->name != NULL; cmd++) {
if (monitor_handler_ported(cmd)) {
if (monitor_handler_ported(cmd) && !monitor_cmd_user_only(cmd)) {
char buf[128];
snprintf(buf, sizeof(buf), "query-%s", cmd->name);
qlist_append_obj(cmd_list, get_cmd_dict(buf));
@ -2537,7 +2551,7 @@ static const mon_cmd_t info_cmds[] = {
.help = "show balloon information",
.user_print = monitor_print_balloon,
.mhandler.info_async = do_info_balloon,
.async = 1,
.flags = MONITOR_CMD_ASYNC,
},
{
.name = "qtree",
@ -3566,7 +3580,7 @@ static const mon_cmd_t *monitor_parse_command(Monitor *mon,
case '-':
{
const char *tmp = p;
int has_option, skip_key = 0;
int skip_key = 0;
/* option */
c = *typestr++;
@ -3574,7 +3588,6 @@ static const mon_cmd_t *monitor_parse_command(Monitor *mon,
goto bad_type;
while (qemu_isspace(*p))
p++;
has_option = 0;
if (*p == '-') {
p++;
if(c != *p) {
@ -3590,11 +3603,11 @@ static const mon_cmd_t *monitor_parse_command(Monitor *mon,
if(skip_key) {
p = tmp;
} else {
/* has option */
p++;
has_option = 1;
qdict_put(qdict, key, qbool_from_int(1));
}
}
qdict_put(qdict, key, qint_from_int(has_option));
}
break;
default:
@ -3883,8 +3896,9 @@ static void monitor_find_completion(const char *cmdline)
next arg */
len = strlen(cmdline);
if (len > 0 && qemu_isspace(cmdline[len - 1])) {
if (nb_args >= MAX_ARGS)
return;
if (nb_args >= MAX_ARGS) {
goto cleanup;
}
args[nb_args++] = qemu_strdup("");
}
if (nb_args <= 1) {
@ -3899,12 +3913,15 @@ static void monitor_find_completion(const char *cmdline)
}
} else {
/* find the command */
for(cmd = mon_cmds; cmd->name != NULL; cmd++) {
if (compare_cmd(args[0], cmd->name))
goto found;
for (cmd = mon_cmds; cmd->name != NULL; cmd++) {
if (compare_cmd(args[0], cmd->name)) {
break;
}
}
return;
found:
if (!cmd->name) {
goto cleanup;
}
ptype = next_arg_type(cmd->args_type);
for(i = 0; i < nb_args - 2; i++) {
if (*ptype != '\0') {
@ -3915,7 +3932,7 @@ static void monitor_find_completion(const char *cmdline)
}
str = args[nb_args - 1];
if (*ptype == '-' && ptype[1] != '\0') {
ptype += 2;
ptype = next_arg_type(ptype);
}
switch(*ptype) {
case 'F':
@ -3954,8 +3971,11 @@ static void monitor_find_completion(const char *cmdline)
break;
}
}
for(i = 0; i < nb_args; i++)
cleanup:
for (i = 0; i < nb_args; i++) {
qemu_free(args[i]);
}
}
static int monitor_can_read(void *opaque)
@ -3965,193 +3985,258 @@ static int monitor_can_read(void *opaque)
return (mon->suspend_cnt == 0) ? 1 : 0;
}
typedef struct CmdArgs {
QString *name;
int type;
int flag;
int optional;
} CmdArgs;
static int check_opt(const CmdArgs *cmd_args, const char *name, QDict *args)
{
if (!cmd_args->optional) {
qerror_report(QERR_MISSING_PARAMETER, name);
return -1;
}
if (cmd_args->type == '-') {
/* handlers expect a value, they need to be changed */
qdict_put(args, name, qint_from_int(0));
}
return 0;
}
static int check_arg(const CmdArgs *cmd_args, QDict *args)
{
QObject *value;
const char *name;
name = qstring_get_str(cmd_args->name);
if (!args) {
return check_opt(cmd_args, name, args);
}
value = qdict_get(args, name);
if (!value) {
return check_opt(cmd_args, name, args);
}
switch (cmd_args->type) {
case 'F':
case 'B':
case 's':
if (qobject_type(value) != QTYPE_QSTRING) {
qerror_report(QERR_INVALID_PARAMETER_TYPE, name, "string");
return -1;
}
break;
case '/': {
int i;
const char *keys[] = { "count", "format", "size", NULL };
for (i = 0; keys[i]; i++) {
QObject *obj = qdict_get(args, keys[i]);
if (!obj) {
qerror_report(QERR_MISSING_PARAMETER, name);
return -1;
}
if (qobject_type(obj) != QTYPE_QINT) {
qerror_report(QERR_INVALID_PARAMETER_TYPE, name, "int");
return -1;
}
}
break;
}
case 'i':
case 'l':
case 'M':
if (qobject_type(value) != QTYPE_QINT) {
qerror_report(QERR_INVALID_PARAMETER_TYPE, name, "int");
return -1;
}
break;
case 'f':
case 'T':
if (qobject_type(value) != QTYPE_QINT && qobject_type(value) != QTYPE_QFLOAT) {
qerror_report(QERR_INVALID_PARAMETER_TYPE, name, "number");
return -1;
}
break;
case 'b':
if (qobject_type(value) != QTYPE_QBOOL) {
qerror_report(QERR_INVALID_PARAMETER_TYPE, name, "bool");
return -1;
}
break;
case '-':
if (qobject_type(value) != QTYPE_QINT &&
qobject_type(value) != QTYPE_QBOOL) {
qerror_report(QERR_INVALID_PARAMETER_TYPE, name, "bool");
return -1;
}
if (qobject_type(value) == QTYPE_QBOOL) {
/* handlers expect a QInt, they need to be changed */
qdict_put(args, name,
qint_from_int(qbool_get_int(qobject_to_qbool(value))));
}
break;
case 'O':
default:
/* impossible */
abort();
}
return 0;
}
static void cmd_args_init(CmdArgs *cmd_args)
{
cmd_args->name = qstring_new();
cmd_args->type = cmd_args->flag = cmd_args->optional = 0;
}
static int check_opts(QemuOptsList *opts_list, QDict *args)
{
assert(!opts_list->desc->name);
return 0;
}
/*
* This is not trivial, we have to parse Monitor command's argument
* type syntax to be able to check the arguments provided by clients.
*
* In the near future we will be using an array for that and will be
* able to drop all this parsing...
*/
static int monitor_check_qmp_args(const mon_cmd_t *cmd, QDict *args)
{
int err;
const char *p;
CmdArgs cmd_args;
QemuOptsList *opts_list;
if (cmd->args_type == NULL) {
return (qdict_size(args) == 0 ? 0 : -1);
}
err = 0;
cmd_args_init(&cmd_args);
opts_list = NULL;
for (p = cmd->args_type;; p++) {
if (*p == ':') {
cmd_args.type = *++p;
p++;
if (cmd_args.type == '-') {
cmd_args.flag = *p++;
cmd_args.optional = 1;
} else if (cmd_args.type == 'O') {
opts_list = qemu_find_opts(qstring_get_str(cmd_args.name));
assert(opts_list);
} else if (*p == '?') {
cmd_args.optional = 1;
p++;
}
assert(*p == ',' || *p == '\0');
if (opts_list) {
err = check_opts(opts_list, args);
opts_list = NULL;
} else {
err = check_arg(&cmd_args, args);
QDECREF(cmd_args.name);
cmd_args_init(&cmd_args);
}
if (err < 0) {
break;
}
} else {
qstring_append_chr(cmd_args.name, *p);
}
if (*p == '\0') {
break;
}
}
QDECREF(cmd_args.name);
return err;
}
static int invalid_qmp_mode(const Monitor *mon, const char *cmd_name)
{
int is_cap = compare_cmd(cmd_name, "qmp_capabilities");
return (qmp_cmd_mode(mon) ? is_cap : !is_cap);
}
/*
* Argument validation rules:
*
* 1. The argument must exist in cmd_args qdict
* 2. The argument type must be the expected one
*
* Special case: If the argument doesn't exist in cmd_args and
* the QMP_ACCEPT_UNKNOWNS flag is set, then the
* checking is skipped for it.
*/
static int check_client_args_type(const QDict *client_args,
const QDict *cmd_args, int flags)
{
const QDictEntry *ent;
for (ent = qdict_first(client_args); ent;ent = qdict_next(client_args,ent)){
QObject *obj;
QString *arg_type;
const QObject *client_arg = qdict_entry_value(ent);
const char *client_arg_name = qdict_entry_key(ent);
obj = qdict_get(cmd_args, client_arg_name);
if (!obj) {
if (flags & QMP_ACCEPT_UNKNOWNS) {
/* handler accepts unknowns */
continue;
}
/* client arg doesn't exist */
qerror_report(QERR_INVALID_PARAMETER, client_arg_name);
return -1;
}
arg_type = qobject_to_qstring(obj);
assert(arg_type != NULL);
/* check if argument's type is correct */
switch (qstring_get_str(arg_type)[0]) {
case 'F':
case 'B':
case 's':
if (qobject_type(client_arg) != QTYPE_QSTRING) {
qerror_report(QERR_INVALID_PARAMETER_TYPE, client_arg_name,
"string");
return -1;
}
break;
case 'i':
case 'l':
case 'M':
if (qobject_type(client_arg) != QTYPE_QINT) {
qerror_report(QERR_INVALID_PARAMETER_TYPE, client_arg_name,
"int");
return -1;
}
break;
case 'f':
case 'T':
if (qobject_type(client_arg) != QTYPE_QINT &&
qobject_type(client_arg) != QTYPE_QFLOAT) {
qerror_report(QERR_INVALID_PARAMETER_TYPE, client_arg_name,
"number");
return -1;
}
break;
case 'b':
case '-':
if (qobject_type(client_arg) != QTYPE_QBOOL) {
qerror_report(QERR_INVALID_PARAMETER_TYPE, client_arg_name,
"bool");
return -1;
}
break;
case 'O':
assert(flags & QMP_ACCEPT_UNKNOWNS);
break;
case '/':
case '.':
/*
* These types are not supported by QMP and thus are not
* handled here. Fall through.
*/
default:
abort();
}
}
return 0;
}
/*
* - Check if the client has passed all mandatory args
* - Set special flags for argument validation
*/
static int check_mandatory_args(const QDict *cmd_args,
const QDict *client_args, int *flags)
{
const QDictEntry *ent;
for (ent = qdict_first(cmd_args); ent; ent = qdict_next(cmd_args, ent)) {
const char *cmd_arg_name = qdict_entry_key(ent);
QString *type = qobject_to_qstring(qdict_entry_value(ent));
assert(type != NULL);
if (qstring_get_str(type)[0] == 'O') {
assert((*flags & QMP_ACCEPT_UNKNOWNS) == 0);
*flags |= QMP_ACCEPT_UNKNOWNS;
} else if (qstring_get_str(type)[0] != '-' &&
qstring_get_str(type)[1] != '?' &&
!qdict_haskey(client_args, cmd_arg_name)) {
qerror_report(QERR_MISSING_PARAMETER, cmd_arg_name);
return -1;
}
}
return 0;
}
static QDict *qdict_from_args_type(const char *args_type)
{
int i;
QDict *qdict;
QString *key, *type, *cur_qs;
assert(args_type != NULL);
qdict = qdict_new();
if (args_type == NULL || args_type[0] == '\0') {
/* no args, empty qdict */
goto out;
}
key = qstring_new();
type = qstring_new();
cur_qs = key;
for (i = 0;; i++) {
switch (args_type[i]) {
case ',':
case '\0':
qdict_put(qdict, qstring_get_str(key), type);
QDECREF(key);
if (args_type[i] == '\0') {
goto out;
}
type = qstring_new(); /* qdict has ref */
cur_qs = key = qstring_new();
break;
case ':':
cur_qs = type;
break;
default:
qstring_append_chr(cur_qs, args_type[i]);
break;
}
}
out:
return qdict;
}
/*
* Client argument checking rules:
*
* 1. Client must provide all mandatory arguments
* 2. Each argument provided by the client must be expected
* 3. Each argument provided by the client must have the type expected
* by the command
*/
static int qmp_check_client_args(const mon_cmd_t *cmd, QDict *client_args)
{
int flags, err;
QDict *cmd_args;
cmd_args = qdict_from_args_type(cmd->args_type);
flags = 0;
err = check_mandatory_args(cmd_args, client_args, &flags);
if (err) {
goto out;
}
err = check_client_args_type(client_args, cmd_args, flags);
out:
QDECREF(cmd_args);
return err;
}
/*
* Input object checking rules
*
* 1. Input object must be a dict
* 2. The "execute" key must exist
* 3. The "execute" key must be a string
* 4. If the "arguments" key exists, it must be a dict
* 5. If the "id" key exists, it can be anything (ie. json-value)
* 6. Any argument not listed above is considered invalid
*/
static QDict *qmp_check_input_obj(QObject *input_obj)
{
const QDictEntry *ent;
int has_exec_key = 0;
QDict *input_dict;
if (qobject_type(input_obj) != QTYPE_QDICT) {
qerror_report(QERR_QMP_BAD_INPUT_OBJECT, "object");
return NULL;
}
input_dict = qobject_to_qdict(input_obj);
for (ent = qdict_first(input_dict); ent; ent = qdict_next(input_dict, ent)){
const char *arg_name = qdict_entry_key(ent);
const QObject *arg_obj = qdict_entry_value(ent);
if (!strcmp(arg_name, "execute")) {
if (qobject_type(arg_obj) != QTYPE_QSTRING) {
qerror_report(QERR_QMP_BAD_INPUT_OBJECT_MEMBER, "execute",
"string");
return NULL;
}
has_exec_key = 1;
} else if (!strcmp(arg_name, "arguments")) {
if (qobject_type(arg_obj) != QTYPE_QDICT) {
qerror_report(QERR_QMP_BAD_INPUT_OBJECT_MEMBER, "arguments",
"object");
return NULL;
}
} else if (!strcmp(arg_name, "id")) {
/* FIXME: check duplicated IDs for async commands */
} else {
qerror_report(QERR_QMP_EXTRA_MEMBER, arg_name);
return NULL;
}
}
if (!has_exec_key) {
qerror_report(QERR_QMP_BAD_INPUT_OBJECT, "execute");
return NULL;
}
return input_dict;
}
static void handle_qmp_command(JSONMessageParser *parser, QList *tokens)
{
int err;
@ -4161,38 +4246,28 @@ static void handle_qmp_command(JSONMessageParser *parser, QList *tokens)
Monitor *mon = cur_mon;
const char *cmd_name, *info_item;
args = NULL;
args = input = NULL;
obj = json_parser_parse(tokens, NULL);
if (!obj) {
// FIXME: should be triggered in json_parser_parse()
qerror_report(QERR_JSON_PARSING);
goto err_out;
} else if (qobject_type(obj) != QTYPE_QDICT) {
qerror_report(QERR_QMP_BAD_INPUT_OBJECT, "object");
}
input = qmp_check_input_obj(obj);
if (!input) {
qobject_decref(obj);
goto err_out;
}
input = qobject_to_qdict(obj);
mon->mc->id = qdict_get(input, "id");
qobject_incref(mon->mc->id);
obj = qdict_get(input, "execute");
if (!obj) {
qerror_report(QERR_QMP_BAD_INPUT_OBJECT, "execute");
goto err_input;
} else if (qobject_type(obj) != QTYPE_QSTRING) {
qerror_report(QERR_QMP_BAD_INPUT_OBJECT_MEMBER, "execute", "string");
goto err_input;
}
cmd_name = qstring_get_str(qobject_to_qstring(obj));
cmd_name = qdict_get_str(input, "execute");
if (invalid_qmp_mode(mon, cmd_name)) {
qerror_report(QERR_COMMAND_NOT_FOUND, cmd_name);
goto err_input;
goto err_out;
}
/*
@ -4201,49 +4276,49 @@ static void handle_qmp_command(JSONMessageParser *parser, QList *tokens)
*/
if (compare_cmd(cmd_name, "info")) {
qerror_report(QERR_COMMAND_NOT_FOUND, cmd_name);
goto err_input;
goto err_out;
} else if (strstart(cmd_name, "query-", &info_item)) {
cmd = monitor_find_command("info");
qdict_put_obj(input, "arguments",
qobject_from_jsonf("{ 'item': %s }", info_item));
} else {
cmd = monitor_find_command(cmd_name);
if (!cmd || !monitor_handler_ported(cmd)) {
if (!cmd || !monitor_handler_ported(cmd)
|| monitor_cmd_user_only(cmd)) {
qerror_report(QERR_COMMAND_NOT_FOUND, cmd_name);
goto err_input;
goto err_out;
}
}
obj = qdict_get(input, "arguments");
if (!obj) {
args = qdict_new();
} else if (qobject_type(obj) != QTYPE_QDICT) {
qerror_report(QERR_QMP_BAD_INPUT_OBJECT_MEMBER, "arguments", "object");
goto err_input;
} else {
args = qobject_to_qdict(obj);
QINCREF(args);
}
QDECREF(input);
err = monitor_check_qmp_args(cmd, args);
err = qmp_check_client_args(cmd, args);
if (err < 0) {
goto err_out;
}
if (monitor_handler_is_async(cmd)) {
qmp_async_cmd_handler(mon, cmd, args);
err = qmp_async_cmd_handler(mon, cmd, args);
if (err) {
/* emit the error response */
goto err_out;
}
} else {
monitor_call_handler(mon, cmd, args);
}
goto out;
err_input:
QDECREF(input);
err_out:
monitor_protocol_emitter(mon, NULL);
out:
QDECREF(input);
QDECREF(args);
}

4
monitor.h
View File

@ -15,6 +15,10 @@ extern Monitor *default_mon;
#define MONITOR_USE_READLINE 0x02
#define MONITOR_USE_CONTROL 0x04
/* flags for monitor commands */
#define MONITOR_CMD_ASYNC 0x0001
#define MONITOR_CMD_USER_ONLY 0x0002
/* QMP events */
typedef enum MonitorEvent {
QEVENT_SHUTDOWN,

4
net.c
View File

@ -1208,6 +1208,10 @@ int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
}
res = net_client_init(mon, opts, 1);
if (res < 0) {
qemu_opts_del(opts);
}
return res;
}

106
qdict.c
View File

@ -82,15 +82,36 @@ static QDictEntry *alloc_entry(const char *key, QObject *value)
return entry;
}
/**
* qdict_entry_value(): Return qdict entry value
*
* Return weak reference.
*/
QObject *qdict_entry_value(const QDictEntry *entry)
{
return entry->value;
}
/**
* qdict_entry_key(): Return qdict entry key
*
* Return a *pointer* to the string, it has to be duplicated before being
* stored.
*/
const char *qdict_entry_key(const QDictEntry *entry)
{
return entry->key;
}
/**
* qdict_find(): List lookup function
*/
static QDictEntry *qdict_find(const QDict *qdict,
const char *key, unsigned int hash)
const char *key, unsigned int bucket)
{
QDictEntry *entry;
QLIST_FOREACH(entry, &qdict->table[hash], next)
QLIST_FOREACH(entry, &qdict->table[bucket], next)
if (!strcmp(entry->key, key))
return entry;
@ -110,11 +131,11 @@ static QDictEntry *qdict_find(const QDict *qdict,
*/
void qdict_put_obj(QDict *qdict, const char *key, QObject *value)
{
unsigned int hash;
unsigned int bucket;
QDictEntry *entry;
hash = tdb_hash(key) % QDICT_HASH_SIZE;
entry = qdict_find(qdict, key, hash);
bucket = tdb_hash(key) % QDICT_BUCKET_MAX;
entry = qdict_find(qdict, key, bucket);
if (entry) {
/* replace key's value */
qobject_decref(entry->value);
@ -122,7 +143,7 @@ void qdict_put_obj(QDict *qdict, const char *key, QObject *value)
} else {
/* allocate a new entry */
entry = alloc_entry(key, value);
QLIST_INSERT_HEAD(&qdict->table[hash], entry, next);
QLIST_INSERT_HEAD(&qdict->table[bucket], entry, next);
qdict->size++;
}
}
@ -137,7 +158,7 @@ QObject *qdict_get(const QDict *qdict, const char *key)
{
QDictEntry *entry;
entry = qdict_find(qdict, key, tdb_hash(key) % QDICT_HASH_SIZE);
entry = qdict_find(qdict, key, tdb_hash(key) % QDICT_BUCKET_MAX);
return (entry == NULL ? NULL : entry->value);
}
@ -148,8 +169,8 @@ QObject *qdict_get(const QDict *qdict, const char *key)
*/
int qdict_haskey(const QDict *qdict, const char *key)
{
unsigned int hash = tdb_hash(key) % QDICT_HASH_SIZE;
return (qdict_find(qdict, key, hash) == NULL ? 0 : 1);
unsigned int bucket = tdb_hash(key) % QDICT_BUCKET_MAX;
return (qdict_find(qdict, key, bucket) == NULL ? 0 : 1);
}
/**
@ -272,20 +293,38 @@ const char *qdict_get_str(const QDict *qdict, const char *key)
*
* Return integer mapped by 'key', if it is not present in
* the dictionary or if the stored object is not of QInt type
* 'err_value' will be returned.
* 'def_value' will be returned.
*/
int64_t qdict_get_try_int(const QDict *qdict, const char *key,
int64_t err_value)
int64_t def_value)
{
QObject *obj;
obj = qdict_get(qdict, key);
if (!obj || qobject_type(obj) != QTYPE_QINT)
return err_value;
return def_value;
return qint_get_int(qobject_to_qint(obj));
}
/**
* qdict_get_try_bool(): Try to get a bool mapped by 'key'
*
* Return bool mapped by 'key', if it is not present in the
* dictionary or if the stored object is not of QBool type
* 'def_value' will be returned.
*/
int qdict_get_try_bool(const QDict *qdict, const char *key, int def_value)
{
QObject *obj;
obj = qdict_get(qdict, key);
if (!obj || qobject_type(obj) != QTYPE_QBOOL)
return def_value;
return qbool_get_int(qobject_to_qbool(obj));
}
/**
* qdict_get_try_str(): Try to get a pointer to the stored string
* mapped by 'key'
@ -318,12 +357,49 @@ void qdict_iter(const QDict *qdict,
int i;
QDictEntry *entry;
for (i = 0; i < QDICT_HASH_SIZE; i++) {
for (i = 0; i < QDICT_BUCKET_MAX; i++) {
QLIST_FOREACH(entry, &qdict->table[i], next)
iter(entry->key, entry->value, opaque);
}
}
static QDictEntry *qdict_next_entry(const QDict *qdict, int first_bucket)
{
int i;
for (i = first_bucket; i < QDICT_BUCKET_MAX; i++) {
if (!QLIST_EMPTY(&qdict->table[i])) {
return QLIST_FIRST(&qdict->table[i]);
}
}
return NULL;
}
/**
* qdict_first(): Return first qdict entry for iteration.
*/
const QDictEntry *qdict_first(const QDict *qdict)
{
return qdict_next_entry(qdict, 0);
}
/**
* qdict_next(): Return next qdict entry in an iteration.
*/
const QDictEntry *qdict_next(const QDict *qdict, const QDictEntry *entry)
{
QDictEntry *ret;
ret = QLIST_NEXT(entry, next);
if (!ret) {
unsigned int bucket = tdb_hash(entry->key) % QDICT_BUCKET_MAX;
ret = qdict_next_entry(qdict, bucket + 1);
}
return ret;
}
/**
* qentry_destroy(): Free all the memory allocated by a QDictEntry
*/
@ -347,7 +423,7 @@ void qdict_del(QDict *qdict, const char *key)
{
QDictEntry *entry;
entry = qdict_find(qdict, key, tdb_hash(key) % QDICT_HASH_SIZE);
entry = qdict_find(qdict, key, tdb_hash(key) % QDICT_BUCKET_MAX);
if (entry) {
QLIST_REMOVE(entry, next);
qentry_destroy(entry);
@ -366,7 +442,7 @@ static void qdict_destroy_obj(QObject *obj)
assert(obj != NULL);
qdict = qobject_to_qdict(obj);
for (i = 0; i < QDICT_HASH_SIZE; i++) {
for (i = 0; i < QDICT_BUCKET_MAX; i++) {
QDictEntry *entry = QLIST_FIRST(&qdict->table[i]);
while (entry) {
QDictEntry *tmp = QLIST_NEXT(entry, next);

11
qdict.h
View File

@ -18,7 +18,7 @@
#include "qemu-queue.h"
#include <stdint.h>
#define QDICT_HASH_SIZE 512
#define QDICT_BUCKET_MAX 512
typedef struct QDictEntry {
char *key;
@ -29,11 +29,13 @@ typedef struct QDictEntry {
typedef struct QDict {
QObject_HEAD;
size_t size;
QLIST_HEAD(,QDictEntry) table[QDICT_HASH_SIZE];
QLIST_HEAD(,QDictEntry) table[QDICT_BUCKET_MAX];
} QDict;
/* Object API */
QDict *qdict_new(void);
const char *qdict_entry_key(const QDictEntry *entry);
QObject *qdict_entry_value(const QDictEntry *entry);
size_t qdict_size(const QDict *qdict);
void qdict_put_obj(QDict *qdict, const char *key, QObject *value);
void qdict_del(QDict *qdict, const char *key);
@ -43,6 +45,8 @@ QDict *qobject_to_qdict(const QObject *obj);
void qdict_iter(const QDict *qdict,
void (*iter)(const char *key, QObject *obj, void *opaque),
void *opaque);
const QDictEntry *qdict_first(const QDict *qdict);
const QDictEntry *qdict_next(const QDict *qdict, const QDictEntry *entry);
/* Helper to qdict_put_obj(), accepts any object */
#define qdict_put(qdict, key, obj) \
@ -56,7 +60,8 @@ QList *qdict_get_qlist(const QDict *qdict, const char *key);
QDict *qdict_get_qdict(const QDict *qdict, const char *key);
const char *qdict_get_str(const QDict *qdict, const char *key);
int64_t qdict_get_try_int(const QDict *qdict, const char *key,
int64_t err_value);
int64_t def_value);
int qdict_get_try_bool(const QDict *qdict, const char *key, int def_value);
const char *qdict_get_try_str(const QDict *qdict, const char *key);
#endif /* QDICT_H */

2
qemu-monitor.hx
View File

@ -1287,7 +1287,7 @@ ETEXI
.help = "request VM to change its memory allocation (in MB)",
.user_print = monitor_user_noop,
.mhandler.cmd_async = do_balloon,
.async = 1,
.flags = MONITOR_CMD_ASYNC,
},
STEXI

6
qerror.c
View File

@ -82,7 +82,7 @@ static const QErrorStringTable qerror_table[] = {
},
{
.error_fmt = QERR_DEVICE_NOT_ACTIVE,
.desc = "Device '%(device)' has not been activated by the guest",
.desc = "Device '%(device)' has not been activated",
},
{
.error_fmt = QERR_DEVICE_NOT_ENCRYPTED,
@ -176,6 +176,10 @@ static const QErrorStringTable qerror_table[] = {
.error_fmt = QERR_QMP_BAD_INPUT_OBJECT_MEMBER,
.desc = "QMP input object member '%(member)' expects '%(expected)'",
},
{
.error_fmt = QERR_QMP_EXTRA_MEMBER,
.desc = "QMP input object member '%(member)' is unexpected",
},
{
.error_fmt = QERR_SET_PASSWD_FAILED,
.desc = "Could not set password",

3
qerror.h
View File

@ -148,6 +148,9 @@ QError *qobject_to_qerror(const QObject *obj);
#define QERR_QMP_BAD_INPUT_OBJECT_MEMBER \
"{ 'class': 'QMPBadInputObjectMember', 'data': { 'member': %s, 'expected': %s } }"
#define QERR_QMP_EXTRA_MEMBER \
"{ 'class': 'QMPExtraInputObjectMember', 'data': { 'member': %s } }"
#define QERR_SET_PASSWD_FAILED \
"{ 'class': 'SetPasswdFailed', 'data': {} }"