#include "qapi/error.h"
#include "qemu-common.h"
#include "qemu/error-report.h"
-#include "qapi/qmp/types.h"
+#include "qapi/qmp/qbool.h"
+#include "qapi/qmp/qdict.h"
+#include "qapi/qmp/qnum.h"
+#include "qapi/qmp/qstring.h"
#include "qapi/qmp/qerror.h"
#include "qemu/option_int.h"
#include "qemu/cutils.h"
* first byte of the option name)
*
* The option name is delimited by delim (usually , or =) or the string end
- * and is copied into buf. If the option name is longer than buf_size, it is
- * truncated. buf is always zero terminated.
+ * and is copied into option. The caller is responsible for free'ing option
+ * when no longer required.
*
* The return value is the position of the delimiter/zero byte after the option
* name in p.
*/
-const char *get_opt_name(char *buf, int buf_size, const char *p, char delim)
+static const char *get_opt_name(const char *p, char **option, char delim)
{
- char *q;
+ char *offset = strchr(p, delim);
- q = buf;
- while (*p != '\0' && *p != delim) {
- if (q && (q - buf) < buf_size - 1)
- *q++ = *p;
- p++;
+ if (offset) {
+ *option = g_strndup(p, offset - p);
+ return offset;
+ } else {
+ *option = g_strdup(p);
+ return p + strlen(p);
}
- if (q)
- *q = '\0';
-
- return p;
}
/*
* delimiter is fixed to be comma which starts a new option. To specify an
* option value that contains commas, double each comma.
*/
-const char *get_opt_value(char *buf, int buf_size, const char *p)
+const char *get_opt_value(const char *p, char **value)
{
- char *q;
-
- q = buf;
- while (*p != '\0') {
- if (*p == ',') {
- if (*(p + 1) != ',')
- break;
- p++;
+ size_t capacity = 0, length;
+ const char *offset;
+
+ *value = NULL;
+ while (1) {
+ offset = strchr(p, ',');
+ if (!offset) {
+ offset = p + strlen(p);
}
- if (q && (q - buf) < buf_size - 1)
- *q++ = *p;
- p++;
- }
- if (q)
- *q = '\0';
- return p;
-}
-
-int get_next_param_value(char *buf, int buf_size,
- const char *tag, const char **pstr)
-{
- const char *p;
- char option[128];
-
- p = *pstr;
- for(;;) {
- p = get_opt_name(option, sizeof(option), p, '=');
- if (*p != '=')
- break;
- p++;
- if (!strcmp(tag, option)) {
- *pstr = get_opt_value(buf, buf_size, p);
- if (**pstr == ',') {
- (*pstr)++;
- }
- return strlen(buf);
- } else {
- p = get_opt_value(NULL, 0, p);
+ length = offset - p;
+ if (*offset != '\0' && *(offset + 1) == ',') {
+ length++;
+ }
+ if (value) {
+ *value = g_renew(char, *value, capacity + length + 1);
+ strncpy(*value + capacity, p, length);
+ (*value)[capacity + length] = '\0';
}
- if (*p != ',')
+ capacity += length;
+ if (*offset == '\0' ||
+ *(offset + 1) != ',') {
break;
- p++;
+ }
+
+ p += (offset - p) + 2;
}
- return 0;
-}
-int get_param_value(char *buf, int buf_size,
- const char *tag, const char *str)
-{
- return get_next_param_value(buf, buf_size, tag, &str);
+ return offset;
}
static void parse_option_bool(const char *name, const char *value, bool *ret,
Error **errp)
{
- if (value != NULL) {
- if (!strcmp(value, "on")) {
- *ret = 1;
- } else if (!strcmp(value, "off")) {
- *ret = 0;
- } else {
- error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
- name, "'on' or 'off'");
- }
- } else {
+ if (!strcmp(value, "on")) {
*ret = 1;
+ } else if (!strcmp(value, "off")) {
+ *ret = 0;
+ } else {
+ error_setg(errp, QERR_INVALID_PARAMETER_VALUE,
+ name, "'on' or 'off'");
}
}
static void parse_option_number(const char *name, const char *value,
uint64_t *ret, Error **errp)
{
- char *postfix;
uint64_t number;
+ int err;
- if (value != NULL) {
- number = strtoull(value, &postfix, 0);
- if (*postfix != '\0') {
- error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name, "a number");
- return;
- }
- *ret = number;
- } else {
+ err = qemu_strtou64(value, NULL, 0, &number);
+ if (err == -ERANGE) {
+ error_setg(errp, "Value '%s' is too large for parameter '%s'",
+ value, name);
+ return;
+ }
+ if (err) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name, "a number");
+ return;
}
+ *ret = number;
}
static const QemuOptDesc *find_desc_by_name(const QemuOptDesc *desc,
void parse_option_size(const char *name, const char *value,
uint64_t *ret, Error **errp)
{
- char *postfix;
- double sizef;
-
- if (value != NULL) {
- sizef = strtod(value, &postfix);
- if (sizef < 0 || sizef > UINT64_MAX) {
- error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name,
- "a non-negative number below 2^64");
- return;
- }
- switch (*postfix) {
- case 'T':
- sizef *= 1024;
- /* fall through */
- case 'G':
- sizef *= 1024;
- /* fall through */
- case 'M':
- sizef *= 1024;
- /* fall through */
- case 'K':
- case 'k':
- sizef *= 1024;
- /* fall through */
- case 'b':
- case '\0':
- *ret = (uint64_t) sizef;
- break;
- default:
- error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name, "a size");
- error_append_hint(errp, "You may use k, M, G or T suffixes for "
- "kilobytes, megabytes, gigabytes and terabytes.\n");
- return;
- }
- } else {
- error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name, "a size");
+ uint64_t size;
+ int err;
+
+ err = qemu_strtosz(value, NULL, &size);
+ if (err == -ERANGE) {
+ error_setg(errp, "Value '%s' is out of range for parameter '%s'",
+ value, name);
+ return;
+ }
+ if (err) {
+ error_setg(errp, QERR_INVALID_PARAMETER_VALUE, name,
+ "a non-negative number below 2^64");
+ error_append_hint(errp, "Optional suffix k, M, G, T, P or E means"
+ " kilo-, mega-, giga-, tera-, peta-\n"
+ "and exabytes, respectively.\n");
+ return;
}
+ *ret = size;
}
bool has_help_option(const char *param)
{
- size_t buflen = strlen(param) + 1;
- char *buf = g_malloc(buflen);
const char *p = param;
bool result = false;
- while (*p) {
- p = get_opt_value(buf, buflen, p);
+ while (*p && !result) {
+ char *value;
+
+ p = get_opt_value(p, &value);
if (*p) {
p++;
}
- if (is_help_option(buf)) {
- result = true;
- goto out;
- }
+ result = is_help_option(value);
+ g_free(value);
}
-out:
- g_free(buf);
return result;
}
-bool is_valid_option_list(const char *param)
+bool is_valid_option_list(const char *p)
{
- size_t buflen = strlen(param) + 1;
- char *buf = g_malloc(buflen);
- const char *p = param;
- bool result = true;
+ char *value = NULL;
+ bool result = false;
while (*p) {
- p = get_opt_value(buf, buflen, p);
- if (*p && !*++p) {
- result = false;
+ p = get_opt_value(p, &value);
+ if ((*p && !*++p) ||
+ (!*value || *value == ',')) {
goto out;
}
- if (!*buf || *buf == ',') {
- result = false;
- goto out;
- }
+ g_free(value);
+ value = NULL;
}
+ result = true;
out:
- g_free(buf);
+ g_free(value);
return result;
}
assert(list);
desc = list->desc;
- printf("Supported options:\n");
while (desc && desc->name) {
printf("%-16s %s\n", desc->name,
desc->help ? desc->help : "No description available");
return opt ? opt->str : NULL;
}
+void qemu_opt_iter_init(QemuOptsIter *iter, QemuOpts *opts, const char *name)
+{
+ iter->opts = opts;
+ iter->opt = QTAILQ_FIRST(&opts->head);
+ iter->name = name;
+}
+
+const char *qemu_opt_iter_next(QemuOptsIter *iter)
+{
+ QemuOpt *ret = iter->opt;
+ if (iter->name) {
+ while (ret && !g_str_equal(iter->name, ret->name)) {
+ ret = QTAILQ_NEXT(ret, next);
+ }
+ }
+ iter->opt = ret ? QTAILQ_NEXT(ret, next) : NULL;
+ return ret ? ret->str : NULL;
+}
+
/* Get a known option (or its default) and remove it from the list
* all in one action. Return a malloced string of the option value.
* Result must be freed by caller with g_free().
}
}
-static void opt_set(QemuOpts *opts, const char *name, const char *value,
+static void opt_set(QemuOpts *opts, const char *name, char *value,
bool prepend, Error **errp)
{
QemuOpt *opt;
desc = find_desc_by_name(opts->list->desc, name);
if (!desc && !opts_accepts_any(opts)) {
+ g_free(value);
error_setg(errp, QERR_INVALID_PARAMETER, name);
return;
}
QTAILQ_INSERT_TAIL(&opts->head, opt, next);
}
opt->desc = desc;
- opt->str = g_strdup(value);
+ opt->str = value;
qemu_opt_parse(opt, &local_err);
if (local_err) {
error_propagate(errp, local_err);
void qemu_opt_set(QemuOpts *opts, const char *name, const char *value,
Error **errp)
{
- opt_set(opts, name, value, false, errp);
+ opt_set(opts, name, g_strdup(value), false, errp);
}
void qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val,
}
for (; desc && desc->name; desc++) {
const char *value;
- QemuOpt *opt = qemu_opt_find(opts, desc->name);
+ opt = qemu_opt_find(opts, desc->name);
value = opt ? opt->str : desc->def_value_str;
if (!value) {
static void opts_do_parse(QemuOpts *opts, const char *params,
const char *firstname, bool prepend, Error **errp)
{
- char option[128], value[1024];
+ char *option = NULL;
+ char *value = NULL;
const char *p,*pe,*pc;
Error *local_err = NULL;
/* found "foo,more" */
if (p == params && firstname) {
/* implicitly named first option */
- pstrcpy(option, sizeof(option), firstname);
- p = get_opt_value(value, sizeof(value), p);
+ option = g_strdup(firstname);
+ p = get_opt_value(p, &value);
} else {
/* option without value, probably a flag */
- p = get_opt_name(option, sizeof(option), p, ',');
+ p = get_opt_name(p, &option, ',');
if (strncmp(option, "no", 2) == 0) {
memmove(option, option+2, strlen(option+2)+1);
- pstrcpy(value, sizeof(value), "off");
+ value = g_strdup("off");
} else {
- pstrcpy(value, sizeof(value), "on");
+ value = g_strdup("on");
}
}
} else {
/* found "foo=bar,more" */
- p = get_opt_name(option, sizeof(option), p, '=');
- if (*p != '=') {
- break;
- }
+ p = get_opt_name(p, &option, '=');
+ assert(*p == '=');
p++;
- p = get_opt_value(value, sizeof(value), p);
+ p = get_opt_value(p, &value);
}
if (strcmp(option, "id") != 0) {
/* store and parse */
opt_set(opts, option, value, prepend, &local_err);
+ value = NULL;
if (local_err) {
error_propagate(errp, local_err);
- return;
+ goto cleanup;
}
}
if (*p != ',') {
break;
}
+ g_free(option);
+ g_free(value);
+ option = value = NULL;
}
+
+ cleanup:
+ g_free(option);
+ g_free(value);
}
/**
bool permit_abbrev, bool defaults, Error **errp)
{
const char *firstname;
- char value[1024], *id = NULL;
+ char *id = NULL;
const char *p;
QemuOpts *opts;
Error *local_err = NULL;
firstname = permit_abbrev ? list->implied_opt_name : NULL;
if (strncmp(params, "id=", 3) == 0) {
- get_opt_value(value, sizeof(value), params+3);
- id = value;
+ get_opt_value(params + 3, &id);
} else if ((p = strstr(params, ",id=")) != NULL) {
- get_opt_value(value, sizeof(value), p+4);
- id = value;
+ get_opt_value(p + 4, &id);
}
/*
*/
assert(!defaults || list->merge_lists);
opts = qemu_opts_create(list, id, !defaults, &local_err);
+ g_free(id);
if (opts == NULL) {
error_propagate(errp, local_err);
return NULL;
static void qemu_opts_from_qdict_1(const char *key, QObject *obj, void *opaque)
{
OptsFromQDictState *state = opaque;
- char buf[32];
+ char buf[32], *tmp = NULL;
const char *value;
- int n;
if (!strcmp(key, "id") || *state->errp) {
return;
switch (qobject_type(obj)) {
case QTYPE_QSTRING:
- value = qstring_get_str(qobject_to_qstring(obj));
+ value = qstring_get_str(qobject_to(QString, obj));
break;
- case QTYPE_QINT:
- n = snprintf(buf, sizeof(buf), "%" PRId64,
- qint_get_int(qobject_to_qint(obj)));
- assert(n < sizeof(buf));
- value = buf;
- break;
- case QTYPE_QFLOAT:
- n = snprintf(buf, sizeof(buf), "%.17g",
- qfloat_get_double(qobject_to_qfloat(obj)));
- assert(n < sizeof(buf));
- value = buf;
+ case QTYPE_QNUM:
+ tmp = qnum_to_string(qobject_to(QNum, obj));
+ value = tmp;
break;
case QTYPE_QBOOL:
pstrcpy(buf, sizeof(buf),
- qbool_get_bool(qobject_to_qbool(obj)) ? "on" : "off");
+ qbool_get_bool(qobject_to(QBool, obj)) ? "on" : "off");
value = buf;
break;
default:
}
qemu_opt_set(state->opts, key, value, state->errp);
+ g_free(tmp);
}
/*
* Create QemuOpts from a QDict.
- * Use value of key "id" as ID if it exists and is a QString.
- * Only QStrings, QInts, QFloats and QBools are copied. Entries with
- * other types are silently ignored.
+ * Use value of key "id" as ID if it exists and is a QString. Only
+ * QStrings, QNums and QBools are copied. Entries with other types
+ * are silently ignored.
*/
QemuOpts *qemu_opts_from_qdict(QemuOptsList *list, const QDict *qdict,
Error **errp)
}
/*
- * Convert from QemuOpts to QDict.
- * The QDict values are of type QString.
+ * Convert from QemuOpts to QDict. The QDict values are of type QString.
+ *
+ * If @list is given, only add those options to the QDict that are contained in
+ * the list. If @del is true, any options added to the QDict are removed from
+ * the QemuOpts, otherwise they remain there.
+ *
+ * If two options in @opts have the same name, they are processed in order
+ * so that the last one wins (consistent with the reverse iteration in
+ * qemu_opt_find()), but all of them are deleted if @del is true.
+ *
* TODO We'll want to use types appropriate for opt->desc->type, but
* this is enough for now.
*/
-QDict *qemu_opts_to_qdict(QemuOpts *opts, QDict *qdict)
+QDict *qemu_opts_to_qdict_filtered(QemuOpts *opts, QDict *qdict,
+ QemuOptsList *list, bool del)
{
- QemuOpt *opt;
- QObject *val;
+ QemuOpt *opt, *next;
if (!qdict) {
qdict = qdict_new();
}
if (opts->id) {
- qdict_put(qdict, "id", qstring_from_str(opts->id));
- }
- QTAILQ_FOREACH(opt, &opts->head, next) {
- val = QOBJECT(qstring_from_str(opt->str));
- qdict_put_obj(qdict, opt->name, val);
+ qdict_put_str(qdict, "id", opts->id);
+ }
+ QTAILQ_FOREACH_SAFE(opt, &opts->head, next, next) {
+ if (list) {
+ QemuOptDesc *desc;
+ bool found = false;
+ for (desc = list->desc; desc->name; desc++) {
+ if (!strcmp(desc->name, opt->name)) {
+ found = true;
+ break;
+ }
+ }
+ if (!found) {
+ continue;
+ }
+ }
+ qdict_put_str(qdict, opt->name, opt->str);
+ if (del) {
+ qemu_opt_del(opt);
+ }
}
return qdict;
}
+/* Copy all options in a QemuOpts to the given QDict. See
+ * qemu_opts_to_qdict_filtered() for details. */
+QDict *qemu_opts_to_qdict(QemuOpts *opts, QDict *qdict)
+{
+ return qemu_opts_to_qdict_filtered(opts, qdict, NULL, false);
+}
+
/* Validate parsed opts against descriptions where no
* descriptions were provided in the QemuOptsList.
*/
projects / qemu.git / blobdiff