#include <string.h>
#include "qemu-common.h"
-#include "qemu-option.h"
+#include "qemu-error.h"
+#include "qemu-objects.h"
+#include "error.h"
+#include "qerror.h"
+#include "qemu-option-internal.h"
/*
* Extracts the name of an option from the parameter string (p points at the
return NULL;
}
-static int parse_option_bool(const char *name, const char *value, int *ret)
+static void parse_option_bool(const char *name, const char *value, bool *ret,
+ Error **errp)
{
if (value != NULL) {
if (!strcmp(value, "on")) {
} else if (!strcmp(value, "off")) {
*ret = 0;
} else {
- fprintf(stderr, "Option '%s': Use 'on' or 'off'\n", name);
- return -1;
+ error_set(errp,QERR_INVALID_PARAMETER_VALUE, name, "'on' or 'off'");
}
} else {
*ret = 1;
}
- return 0;
}
-static int parse_option_number(const char *name, const char *value, uint64_t *ret)
+static void parse_option_number(const char *name, const char *value,
+ uint64_t *ret, Error **errp)
{
char *postfix;
uint64_t number;
if (value != NULL) {
number = strtoull(value, &postfix, 0);
if (*postfix != '\0') {
- fprintf(stderr, "Option '%s' needs a number as parameter\n", name);
- return -1;
+ error_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a number");
+ return;
}
*ret = number;
} else {
- fprintf(stderr, "Option '%s' needs a parameter\n", name);
- return -1;
+ error_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a number");
}
- return 0;
}
-static int parse_option_size(const char *name, const char *value, uint64_t *ret)
+static void parse_option_size(const char *name, const char *value,
+ uint64_t *ret, Error **errp)
{
char *postfix;
double sizef;
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:
- fprintf(stderr, "Option '%s' needs size as parameter\n", name);
- fprintf(stderr, "You may use k, M, G or T suffixes for "
+ error_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a size");
+ error_printf_unless_qmp("You may use k, M, G or T suffixes for "
"kilobytes, megabytes, gigabytes and terabytes.\n");
- return -1;
+ return;
}
} else {
- fprintf(stderr, "Option '%s' needs a parameter\n", name);
- return -1;
+ error_set(errp, QERR_INVALID_PARAMETER_VALUE, name, "a size");
}
- return 0;
}
/*
int set_option_parameter(QEMUOptionParameter *list, const char *name,
const char *value)
{
- int flag;
+ bool flag;
+ Error *local_err = NULL;
// Find a matching parameter
list = get_option_parameter(list, name);
// Process parameter
switch (list->type) {
case OPT_FLAG:
- if (parse_option_bool(name, value, &flag) == -1)
- return -1;
- list->value.n = flag;
+ parse_option_bool(name, value, &flag, &local_err);
+ if (!error_is_set(&local_err)) {
+ list->value.n = flag;
+ }
break;
case OPT_STRING:
if (value != NULL) {
- list->value.s = qemu_strdup(value);
+ list->value.s = g_strdup(value);
} else {
fprintf(stderr, "Option '%s' needs a parameter\n", name);
return -1;
break;
case OPT_SIZE:
- if (parse_option_size(name, value, &list->value.n) == -1)
- return -1;
+ parse_option_size(name, value, &list->value.n, &local_err);
break;
default:
return -1;
}
+ if (error_is_set(&local_err)) {
+ qerror_report_err(local_err);
+ error_free(local_err);
+ return -1;
+ }
+
return 0;
}
while (cur && cur->name) {
if (cur->type == OPT_STRING) {
- qemu_free(cur->value.s);
+ g_free(cur->value.s);
}
cur++;
}
- qemu_free(list);
+ g_free(list);
+}
+
+/*
+ * Count valid options in list
+ */
+static size_t count_option_parameters(QEMUOptionParameter *list)
+{
+ size_t num_options = 0;
+
+ while (list && list->name) {
+ num_options++;
+ list++;
+ }
+
+ return num_options;
+}
+
+/*
+ * Append an option list (list) to an option list (dest).
+ *
+ * If dest is NULL, a new copy of list is created.
+ *
+ * Returns a pointer to the first element of dest (or the newly allocated copy)
+ */
+QEMUOptionParameter *append_option_parameters(QEMUOptionParameter *dest,
+ QEMUOptionParameter *list)
+{
+ size_t num_options, num_dest_options;
+
+ num_options = count_option_parameters(dest);
+ num_dest_options = num_options;
+
+ num_options += count_option_parameters(list);
+
+ dest = g_realloc(dest, (num_options + 1) * sizeof(QEMUOptionParameter));
+ dest[num_dest_options].name = NULL;
+
+ while (list && list->name) {
+ if (get_option_parameter(dest, list->name) == NULL) {
+ dest[num_dest_options++] = *list;
+ dest[num_dest_options].name = NULL;
+ }
+ list++;
+ }
+
+ return dest;
}
/*
* Parses a parameter string (param) into an option list (dest).
*
- * list is the templace is. If dest is NULL, a new copy of list is created for
- * it. If list is NULL, this function fails.
+ * list is the template option list. If dest is NULL, a new copy of list is
+ * created. If list is NULL, this function fails.
*
* A parameter string consists of one or more parameters, separated by commas.
* Each parameter consists of its name and possibly of a value. In the latter
QEMUOptionParameter *parse_option_parameters(const char *param,
QEMUOptionParameter *list, QEMUOptionParameter *dest)
{
- QEMUOptionParameter *cur;
QEMUOptionParameter *allocated = NULL;
char name[256];
char value[256];
char *param_delim, *value_delim;
char next_delim;
- size_t num_options;
if (list == NULL) {
return NULL;
}
if (dest == NULL) {
- // Count valid options
- num_options = 0;
- cur = list;
- while (cur->name) {
- num_options++;
- cur++;
- }
-
- // Create a copy of the option list to fill in values
- dest = qemu_mallocz((num_options + 1) * sizeof(QEMUOptionParameter));
- allocated = dest;
- memcpy(dest, list, (num_options + 1) * sizeof(QEMUOptionParameter));
+ dest = allocated = append_option_parameters(NULL, list);
}
while (*param) {
printf("%s=%" PRId64 " ", list->name, list->value.n);
break;
default:
- printf("%s=(unkown type) ", list->name);
+ printf("%s=(unknown type) ", list->name);
break;
}
list++;
/* ------------------------------------------------------------------ */
-struct QemuOpt {
- const char *name;
- const char *str;
-
- QemuOptDesc *desc;
- union {
- int boolean;
- uint64_t uint;
- } value;
-
- QemuOpts *opts;
- QTAILQ_ENTRY(QemuOpt) next;
-};
-
-struct QemuOpts {
- const char *id;
- QemuOptsList *list;
- QTAILQ_HEAD(, QemuOpt) head;
- QTAILQ_ENTRY(QemuOpts) next;
-};
-
static QemuOpt *qemu_opt_find(QemuOpts *opts, const char *name)
{
QemuOpt *opt;
- QTAILQ_FOREACH(opt, &opts->head, next) {
+ QTAILQ_FOREACH_REVERSE(opt, &opts->head, QemuOptHead, next) {
if (strcmp(opt->name, name) != 0)
continue;
return opt;
return opt ? opt->str : NULL;
}
-int qemu_opt_get_bool(QemuOpts *opts, const char *name, int defval)
+bool qemu_opt_has_help_opt(QemuOpts *opts)
+{
+ QemuOpt *opt;
+
+ QTAILQ_FOREACH_REVERSE(opt, &opts->head, QemuOptHead, next) {
+ if (is_help_option(opt->name)) {
+ return true;
+ }
+ }
+ return false;
+}
+
+bool qemu_opt_get_bool(QemuOpts *opts, const char *name, bool defval)
{
QemuOpt *opt = qemu_opt_find(opts, name);
return opt->value.uint;
}
-static int qemu_opt_parse(QemuOpt *opt)
+static void qemu_opt_parse(QemuOpt *opt, Error **errp)
{
if (opt->desc == NULL)
- return 0;
+ return;
+
switch (opt->desc->type) {
case QEMU_OPT_STRING:
/* nothing */
- return 0;
+ return;
case QEMU_OPT_BOOL:
- return parse_option_bool(opt->name, opt->str, &opt->value.boolean);
+ parse_option_bool(opt->name, opt->str, &opt->value.boolean, errp);
+ break;
case QEMU_OPT_NUMBER:
- return parse_option_number(opt->name, opt->str, &opt->value.uint);
+ parse_option_number(opt->name, opt->str, &opt->value.uint, errp);
+ break;
case QEMU_OPT_SIZE:
- return parse_option_size(opt->name, opt->str, &opt->value.uint);
+ parse_option_size(opt->name, opt->str, &opt->value.uint, errp);
+ break;
default:
abort();
}
static void qemu_opt_del(QemuOpt *opt)
{
QTAILQ_REMOVE(&opt->opts->head, opt, next);
- qemu_free((/* !const */ char*)opt->name);
- qemu_free((/* !const */ char*)opt->str);
- qemu_free(opt);
+ g_free((/* !const */ char*)opt->name);
+ g_free((/* !const */ char*)opt->str);
+ g_free(opt);
}
-int qemu_opt_set(QemuOpts *opts, const char *name, const char *value)
+static void opt_set(QemuOpts *opts, const char *name, const char *value,
+ bool prepend, Error **errp)
{
QemuOpt *opt;
+ const QemuOptDesc *desc = opts->list->desc;
+ Error *local_err = NULL;
+ int i;
- opt = qemu_opt_find(opts, name);
- if (!opt) {
- QemuOptDesc *desc = opts->list->desc;
- int i;
-
- for (i = 0; desc[i].name != NULL; i++) {
- if (strcmp(desc[i].name, name) == 0) {
- break;
- }
+ for (i = 0; desc[i].name != NULL; i++) {
+ if (strcmp(desc[i].name, name) == 0) {
+ break;
}
- if (desc[i].name == NULL) {
- if (i == 0) {
- /* empty list -> allow any */;
- } else {
- fprintf(stderr, "option \"%s\" is not valid for %s\n",
- name, opts->list->name);
- return -1;
- }
+ }
+ if (desc[i].name == NULL) {
+ if (i == 0) {
+ /* empty list -> allow any */;
+ } else {
+ error_set(errp, QERR_INVALID_PARAMETER, name);
+ return;
}
- opt = qemu_mallocz(sizeof(*opt));
- opt->name = qemu_strdup(name);
- opt->opts = opts;
+ }
+
+ opt = g_malloc0(sizeof(*opt));
+ opt->name = g_strdup(name);
+ opt->opts = opts;
+ if (prepend) {
+ QTAILQ_INSERT_HEAD(&opts->head, opt, next);
+ } else {
QTAILQ_INSERT_TAIL(&opts->head, opt, next);
- if (desc[i].name != NULL) {
- opt->desc = desc+i;
- }
}
- qemu_free((/* !const */ char*)opt->str);
- opt->str = NULL;
+ if (desc[i].name != NULL) {
+ opt->desc = desc+i;
+ }
if (value) {
- opt->str = qemu_strdup(value);
+ opt->str = g_strdup(value);
}
- if (qemu_opt_parse(opt) < 0) {
- fprintf(stderr, "Failed to parse \"%s\" for \"%s.%s\"\n", opt->str,
- opts->list->name, opt->name);
+ qemu_opt_parse(opt, &local_err);
+ if (error_is_set(&local_err)) {
+ error_propagate(errp, local_err);
qemu_opt_del(opt);
+ }
+}
+
+int qemu_opt_set(QemuOpts *opts, const char *name, const char *value)
+{
+ Error *local_err = NULL;
+
+ opt_set(opts, name, value, false, &local_err);
+ if (error_is_set(&local_err)) {
+ qerror_report_err(local_err);
+ error_free(local_err);
return -1;
}
+
+ return 0;
+}
+
+void qemu_opt_set_err(QemuOpts *opts, const char *name, const char *value,
+ Error **errp)
+{
+ opt_set(opts, name, value, false, errp);
+}
+
+int qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val)
+{
+ QemuOpt *opt;
+ const QemuOptDesc *desc = opts->list->desc;
+ int i;
+
+ for (i = 0; desc[i].name != NULL; i++) {
+ if (strcmp(desc[i].name, name) == 0) {
+ break;
+ }
+ }
+ if (desc[i].name == NULL) {
+ if (i == 0) {
+ /* empty list -> allow any */;
+ } else {
+ qerror_report(QERR_INVALID_PARAMETER, name);
+ return -1;
+ }
+ }
+
+ opt = g_malloc0(sizeof(*opt));
+ opt->name = g_strdup(name);
+ opt->opts = opts;
+ QTAILQ_INSERT_TAIL(&opts->head, opt, next);
+ if (desc[i].name != NULL) {
+ opt->desc = desc+i;
+ }
+ opt->value.boolean = !!val;
return 0;
}
QTAILQ_FOREACH(opts, &list->head, next) {
if (!opts->id) {
+ if (!id) {
+ return opts;
+ }
continue;
}
if (strcmp(opts->id, id) != 0) {
return NULL;
}
-QemuOpts *qemu_opts_create(QemuOptsList *list, const char *id, int fail_if_exists)
+static int id_wellformed(const char *id)
+{
+ int i;
+
+ if (!qemu_isalpha(id[0])) {
+ return 0;
+ }
+ for (i = 1; id[i]; i++) {
+ if (!qemu_isalnum(id[i]) && !strchr("-._", id[i])) {
+ return 0;
+ }
+ }
+ return 1;
+}
+
+QemuOpts *qemu_opts_create(QemuOptsList *list, const char *id,
+ int fail_if_exists, Error **errp)
{
QemuOpts *opts = NULL;
if (id) {
+ if (!id_wellformed(id)) {
+ error_set(errp,QERR_INVALID_PARAMETER_VALUE, "id", "an identifier");
+ error_printf_unless_qmp("Identifiers consist of letters, digits, '-', '.', '_', starting with a letter.\n");
+ return NULL;
+ }
opts = qemu_opts_find(list, id);
if (opts != NULL) {
- if (fail_if_exists) {
- fprintf(stderr, "tried to create id \"%s\" twice for \"%s\"\n",
- id, list->name);
+ if (fail_if_exists && !list->merge_lists) {
+ error_set(errp, QERR_DUPLICATE_ID, id, list->name);
return NULL;
} else {
return opts;
}
}
+ } else if (list->merge_lists) {
+ opts = qemu_opts_find(list, NULL);
+ if (opts) {
+ return opts;
+ }
}
- opts = qemu_mallocz(sizeof(*opts));
+ opts = g_malloc0(sizeof(*opts));
if (id) {
- opts->id = qemu_strdup(id);
+ opts->id = g_strdup(id);
}
opts->list = list;
+ loc_save(&opts->loc);
QTAILQ_INIT(&opts->head);
QTAILQ_INSERT_TAIL(&list->head, opts, next);
return opts;
}
+void qemu_opts_reset(QemuOptsList *list)
+{
+ QemuOpts *opts, *next_opts;
+
+ QTAILQ_FOREACH_SAFE(opts, &list->head, next, next_opts) {
+ qemu_opts_del(opts);
+ }
+}
+
+void qemu_opts_loc_restore(QemuOpts *opts)
+{
+ loc_restore(&opts->loc);
+}
+
int qemu_opts_set(QemuOptsList *list, const char *id,
const char *name, const char *value)
{
QemuOpts *opts;
+ Error *local_err = NULL;
- opts = qemu_opts_create(list, id, 1);
- if (opts == NULL) {
+ opts = qemu_opts_create(list, id, 1, &local_err);
+ if (error_is_set(&local_err)) {
+ qerror_report_err(local_err);
+ error_free(local_err);
return -1;
}
return qemu_opt_set(opts, name, value);
qemu_opt_del(opt);
}
QTAILQ_REMOVE(&opts->list->head, opts, next);
- qemu_free(opts);
+ g_free(opts->id);
+ g_free(opts);
}
int qemu_opts_print(QemuOpts *opts, void *dummy)
return 0;
}
-int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname)
+static int opts_do_parse(QemuOpts *opts, const char *params,
+ const char *firstname, bool prepend)
{
- char option[128], value[128];
+ char option[128], value[1024];
const char *p,*pe,*pc;
+ Error *local_err = NULL;
for (p = params; *p != '\0'; p++) {
pe = strchr(p, '=');
}
if (strcmp(option, "id") != 0) {
/* store and parse */
- if (qemu_opt_set(opts, option, value) == -1) {
+ opt_set(opts, option, value, prepend, &local_err);
+ if (error_is_set(&local_err)) {
+ qerror_report_err(local_err);
+ error_free(local_err);
return -1;
}
}
return 0;
}
-QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, const char *firstname)
+int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname)
{
- char value[128], *id = NULL;
+ return opts_do_parse(opts, params, firstname, false);
+}
+
+static QemuOpts *opts_parse(QemuOptsList *list, const char *params,
+ int permit_abbrev, bool defaults)
+{
+ const char *firstname;
+ char value[1024], *id = NULL;
const char *p;
QemuOpts *opts;
+ Error *local_err = NULL;
+
+ assert(!permit_abbrev || list->implied_opt_name);
+ firstname = permit_abbrev ? list->implied_opt_name : NULL;
if (strncmp(params, "id=", 3) == 0) {
get_opt_value(value, sizeof(value), params+3);
- id = qemu_strdup(value);
+ id = value;
} else if ((p = strstr(params, ",id=")) != NULL) {
get_opt_value(value, sizeof(value), p+4);
- id = qemu_strdup(value);
+ id = value;
+ }
+ if (defaults) {
+ if (!id && !QTAILQ_EMPTY(&list->head)) {
+ opts = qemu_opts_find(list, NULL);
+ } else {
+ opts = qemu_opts_create(list, id, 0, &local_err);
+ }
+ } else {
+ opts = qemu_opts_create(list, id, 1, &local_err);
+ }
+ if (opts == NULL) {
+ if (error_is_set(&local_err)) {
+ qerror_report_err(local_err);
+ error_free(local_err);
+ }
+ return NULL;
+ }
+
+ if (opts_do_parse(opts, params, firstname, defaults) != 0) {
+ qemu_opts_del(opts);
+ return NULL;
+ }
+
+ return opts;
+}
+
+QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params,
+ int permit_abbrev)
+{
+ return opts_parse(list, params, permit_abbrev, false);
+}
+
+void qemu_opts_set_defaults(QemuOptsList *list, const char *params,
+ int permit_abbrev)
+{
+ QemuOpts *opts;
+
+ opts = opts_parse(list, params, permit_abbrev, true);
+ assert(opts);
+}
+
+typedef struct OptsFromQDictState {
+ QemuOpts *opts;
+ Error **errp;
+} OptsFromQDictState;
+
+static void qemu_opts_from_qdict_1(const char *key, QObject *obj, void *opaque)
+{
+ OptsFromQDictState *state = opaque;
+ char buf[32];
+ const char *value;
+ int n;
+
+ if (!strcmp(key, "id") || error_is_set(state->errp)) {
+ return;
+ }
+
+ switch (qobject_type(obj)) {
+ case QTYPE_QSTRING:
+ 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;
+ break;
+ case QTYPE_QBOOL:
+ pstrcpy(buf, sizeof(buf),
+ qbool_get_int(qobject_to_qbool(obj)) ? "on" : "off");
+ value = buf;
+ break;
+ default:
+ return;
}
- opts = qemu_opts_create(list, id, 1);
- if (opts == NULL)
+
+ qemu_opt_set_err(state->opts, key, value, state->errp);
+}
+
+/*
+ * 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.
+ */
+QemuOpts *qemu_opts_from_qdict(QemuOptsList *list, const QDict *qdict,
+ Error **errp)
+{
+ OptsFromQDictState state;
+ Error *local_err = NULL;
+ QemuOpts *opts;
+
+ opts = qemu_opts_create(list, qdict_get_try_str(qdict, "id"), 1,
+ &local_err);
+ if (error_is_set(&local_err)) {
+ error_propagate(errp, local_err);
return NULL;
+ }
- if (qemu_opts_do_parse(opts, params, firstname) != 0) {
+ assert(opts != NULL);
+
+ state.errp = &local_err;
+ state.opts = opts;
+ qdict_iter(qdict, qemu_opts_from_qdict_1, &state);
+ if (error_is_set(&local_err)) {
+ error_propagate(errp, local_err);
qemu_opts_del(opts);
return NULL;
}
return opts;
}
+/*
+ * Convert from QemuOpts to QDict.
+ * The QDict values are of type QString.
+ * 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)
+{
+ QemuOpt *opt;
+ QObject *val;
+
+ 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);
+ }
+ return qdict;
+}
+
+/* Validate parsed opts against descriptions where no
+ * descriptions were provided in the QemuOptsList.
+ */
+void qemu_opts_validate(QemuOpts *opts, const QemuOptDesc *desc, Error **errp)
+{
+ QemuOpt *opt;
+ Error *local_err = NULL;
+
+ assert(opts->list->desc[0].name == NULL);
+
+ QTAILQ_FOREACH(opt, &opts->head, next) {
+ int i;
+
+ for (i = 0; desc[i].name != NULL; i++) {
+ if (strcmp(desc[i].name, opt->name) == 0) {
+ break;
+ }
+ }
+ if (desc[i].name == NULL) {
+ error_set(errp, QERR_INVALID_PARAMETER, opt->name);
+ return;
+ }
+
+ opt->desc = &desc[i];
+
+ qemu_opt_parse(opt, &local_err);
+ if (error_is_set(&local_err)) {
+ error_propagate(errp, local_err);
+ return;
+ }
+ }
+}
+
int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void *opaque,
int abort_on_failure)
{
+ Location loc;
QemuOpts *opts;
int rc = 0;
+ loc_push_none(&loc);
QTAILQ_FOREACH(opts, &list->head, next) {
- rc = func(opts, opaque);
+ loc_restore(&opts->loc);
+ rc |= func(opts, opaque);
if (abort_on_failure && rc != 0)
break;
}
+ loc_pop(&loc);
return rc;
}
projects / qemu.git / blobdiff