822 lines
21 KiB
C
822 lines
21 KiB
C
/*
|
|
* Commandline option parsing functions
|
|
*
|
|
* Copyright (c) 2003-2008 Fabrice Bellard
|
|
* Copyright (c) 2009 Kevin Wolf <kwolf@redhat.com>
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "qemu-common.h"
|
|
#include "qemu-option.h"
|
|
|
|
/*
|
|
* Extracts the name of an option from the parameter string (p points at the
|
|
* 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.
|
|
*
|
|
* 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)
|
|
{
|
|
char *q;
|
|
|
|
q = buf;
|
|
while (*p != '\0' && *p != delim) {
|
|
if (q && (q - buf) < buf_size - 1)
|
|
*q++ = *p;
|
|
p++;
|
|
}
|
|
if (q)
|
|
*q = '\0';
|
|
|
|
return p;
|
|
}
|
|
|
|
/*
|
|
* Extracts the value of an option from the parameter string p (p points at the
|
|
* first byte of the option value)
|
|
*
|
|
* This function is comparable to get_opt_name with the difference that the
|
|
* 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)
|
|
{
|
|
char *q;
|
|
|
|
q = buf;
|
|
while (*p != '\0') {
|
|
if (*p == ',') {
|
|
if (*(p + 1) != ',')
|
|
break;
|
|
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);
|
|
}
|
|
if (*p != ',')
|
|
break;
|
|
p++;
|
|
}
|
|
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);
|
|
}
|
|
|
|
int check_params(char *buf, int buf_size,
|
|
const char * const *params, const char *str)
|
|
{
|
|
const char *p;
|
|
int i;
|
|
|
|
p = str;
|
|
while (*p != '\0') {
|
|
p = get_opt_name(buf, buf_size, p, '=');
|
|
if (*p != '=') {
|
|
return -1;
|
|
}
|
|
p++;
|
|
for (i = 0; params[i] != NULL; i++) {
|
|
if (!strcmp(params[i], buf)) {
|
|
break;
|
|
}
|
|
}
|
|
if (params[i] == NULL) {
|
|
return -1;
|
|
}
|
|
p = get_opt_value(NULL, 0, p);
|
|
if (*p != ',') {
|
|
break;
|
|
}
|
|
p++;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Searches an option list for an option with the given name
|
|
*/
|
|
QEMUOptionParameter *get_option_parameter(QEMUOptionParameter *list,
|
|
const char *name)
|
|
{
|
|
while (list && list->name) {
|
|
if (!strcmp(list->name, name)) {
|
|
return list;
|
|
}
|
|
list++;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int parse_option_bool(const char *name, const char *value, int *ret)
|
|
{
|
|
if (value != NULL) {
|
|
if (!strcmp(value, "on")) {
|
|
*ret = 1;
|
|
} else if (!strcmp(value, "off")) {
|
|
*ret = 0;
|
|
} else {
|
|
fprintf(stderr, "Option '%s': Use 'on' or 'off'\n", name);
|
|
return -1;
|
|
}
|
|
} else {
|
|
*ret = 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int parse_option_number(const char *name, const char *value, uint64_t *ret)
|
|
{
|
|
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;
|
|
}
|
|
*ret = number;
|
|
} else {
|
|
fprintf(stderr, "Option '%s' needs a parameter\n", name);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int parse_option_size(const char *name, const char *value, uint64_t *ret)
|
|
{
|
|
char *postfix;
|
|
double sizef;
|
|
|
|
if (value != NULL) {
|
|
sizef = strtod(value, &postfix);
|
|
switch (*postfix) {
|
|
case 'T':
|
|
sizef *= 1024;
|
|
case 'G':
|
|
sizef *= 1024;
|
|
case 'M':
|
|
sizef *= 1024;
|
|
case 'K':
|
|
case 'k':
|
|
sizef *= 1024;
|
|
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 "
|
|
"kilobytes, megabytes, gigabytes and terabytes.\n");
|
|
return -1;
|
|
}
|
|
} else {
|
|
fprintf(stderr, "Option '%s' needs a parameter\n", name);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Sets the value of a parameter in a given option list. The parsing of the
|
|
* value depends on the type of option:
|
|
*
|
|
* OPT_FLAG (uses value.n):
|
|
* If no value is given, the flag is set to 1.
|
|
* Otherwise the value must be "on" (set to 1) or "off" (set to 0)
|
|
*
|
|
* OPT_STRING (uses value.s):
|
|
* value is strdup()ed and assigned as option value
|
|
*
|
|
* OPT_SIZE (uses value.n):
|
|
* The value is converted to an integer. Suffixes for kilobytes etc. are
|
|
* allowed (powers of 1024).
|
|
*
|
|
* Returns 0 on succes, -1 in error cases
|
|
*/
|
|
int set_option_parameter(QEMUOptionParameter *list, const char *name,
|
|
const char *value)
|
|
{
|
|
int flag;
|
|
|
|
// Find a matching parameter
|
|
list = get_option_parameter(list, name);
|
|
if (list == NULL) {
|
|
fprintf(stderr, "Unknown option '%s'\n", name);
|
|
return -1;
|
|
}
|
|
|
|
// Process parameter
|
|
switch (list->type) {
|
|
case OPT_FLAG:
|
|
if (parse_option_bool(name, value, &flag) == -1)
|
|
return -1;
|
|
list->value.n = flag;
|
|
break;
|
|
|
|
case OPT_STRING:
|
|
if (value != NULL) {
|
|
list->value.s = qemu_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;
|
|
break;
|
|
|
|
default:
|
|
fprintf(stderr, "Bug: Option '%s' has an unknown type\n", name);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Sets the given parameter to an integer instead of a string.
|
|
* This function cannot be used to set string options.
|
|
*
|
|
* Returns 0 on success, -1 in error cases
|
|
*/
|
|
int set_option_parameter_int(QEMUOptionParameter *list, const char *name,
|
|
uint64_t value)
|
|
{
|
|
// Find a matching parameter
|
|
list = get_option_parameter(list, name);
|
|
if (list == NULL) {
|
|
fprintf(stderr, "Unknown option '%s'\n", name);
|
|
return -1;
|
|
}
|
|
|
|
// Process parameter
|
|
switch (list->type) {
|
|
case OPT_FLAG:
|
|
case OPT_NUMBER:
|
|
case OPT_SIZE:
|
|
list->value.n = value;
|
|
break;
|
|
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Frees a option list. If it contains strings, the strings are freed as well.
|
|
*/
|
|
void free_option_parameters(QEMUOptionParameter *list)
|
|
{
|
|
QEMUOptionParameter *cur = list;
|
|
|
|
while (cur && cur->name) {
|
|
if (cur->type == OPT_STRING) {
|
|
qemu_free(cur->value.s);
|
|
}
|
|
cur++;
|
|
}
|
|
|
|
qemu_free(list);
|
|
}
|
|
|
|
/*
|
|
* 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.
|
|
*
|
|
* 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
|
|
* case, the value is delimited by an = character. To specify a value which
|
|
* contains commas, double each comma so it won't be recognized as the end of
|
|
* the parameter.
|
|
*
|
|
* For more details of the parsing see above.
|
|
*
|
|
* Returns a pointer to the first element of dest (or the newly allocated copy)
|
|
* or NULL in error cases
|
|
*/
|
|
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));
|
|
}
|
|
|
|
while (*param) {
|
|
|
|
// Find parameter name and value in the string
|
|
param_delim = strchr(param, ',');
|
|
value_delim = strchr(param, '=');
|
|
|
|
if (value_delim && (value_delim < param_delim || !param_delim)) {
|
|
next_delim = '=';
|
|
} else {
|
|
next_delim = ',';
|
|
value_delim = NULL;
|
|
}
|
|
|
|
param = get_opt_name(name, sizeof(name), param, next_delim);
|
|
if (value_delim) {
|
|
param = get_opt_value(value, sizeof(value), param + 1);
|
|
}
|
|
if (*param != '\0') {
|
|
param++;
|
|
}
|
|
|
|
// Set the parameter
|
|
if (set_option_parameter(dest, name, value_delim ? value : NULL)) {
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
return dest;
|
|
|
|
fail:
|
|
// Only free the list if it was newly allocated
|
|
free_option_parameters(allocated);
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* Prints all options of a list that have a value to stdout
|
|
*/
|
|
void print_option_parameters(QEMUOptionParameter *list)
|
|
{
|
|
while (list && list->name) {
|
|
switch (list->type) {
|
|
case OPT_STRING:
|
|
if (list->value.s != NULL) {
|
|
printf("%s='%s' ", list->name, list->value.s);
|
|
}
|
|
break;
|
|
case OPT_FLAG:
|
|
printf("%s=%s ", list->name, list->value.n ? "on" : "off");
|
|
break;
|
|
case OPT_SIZE:
|
|
case OPT_NUMBER:
|
|
printf("%s=%" PRId64 " ", list->name, list->value.n);
|
|
break;
|
|
default:
|
|
printf("%s=(unkown type) ", list->name);
|
|
break;
|
|
}
|
|
list++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Prints an overview of all available options
|
|
*/
|
|
void print_option_help(QEMUOptionParameter *list)
|
|
{
|
|
printf("Supported options:\n");
|
|
while (list && list->name) {
|
|
printf("%-16s %s\n", list->name,
|
|
list->help ? list->help : "No description available");
|
|
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(QemuOptHead, QemuOpt) head;
|
|
QTAILQ_ENTRY(QemuOpts) next;
|
|
};
|
|
|
|
static QemuOpt *qemu_opt_find(QemuOpts *opts, const char *name)
|
|
{
|
|
QemuOpt *opt;
|
|
|
|
QTAILQ_FOREACH_REVERSE(opt, &opts->head, QemuOptHead, next) {
|
|
if (strcmp(opt->name, name) != 0)
|
|
continue;
|
|
return opt;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
const char *qemu_opt_get(QemuOpts *opts, const char *name)
|
|
{
|
|
QemuOpt *opt = qemu_opt_find(opts, name);
|
|
return opt ? opt->str : NULL;
|
|
}
|
|
|
|
int qemu_opt_get_bool(QemuOpts *opts, const char *name, int defval)
|
|
{
|
|
QemuOpt *opt = qemu_opt_find(opts, name);
|
|
|
|
if (opt == NULL)
|
|
return defval;
|
|
assert(opt->desc && opt->desc->type == QEMU_OPT_BOOL);
|
|
return opt->value.boolean;
|
|
}
|
|
|
|
uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval)
|
|
{
|
|
QemuOpt *opt = qemu_opt_find(opts, name);
|
|
|
|
if (opt == NULL)
|
|
return defval;
|
|
assert(opt->desc && opt->desc->type == QEMU_OPT_NUMBER);
|
|
return opt->value.uint;
|
|
}
|
|
|
|
uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval)
|
|
{
|
|
QemuOpt *opt = qemu_opt_find(opts, name);
|
|
|
|
if (opt == NULL)
|
|
return defval;
|
|
assert(opt->desc && opt->desc->type == QEMU_OPT_SIZE);
|
|
return opt->value.uint;
|
|
}
|
|
|
|
static int qemu_opt_parse(QemuOpt *opt)
|
|
{
|
|
if (opt->desc == NULL)
|
|
return 0;
|
|
switch (opt->desc->type) {
|
|
case QEMU_OPT_STRING:
|
|
/* nothing */
|
|
return 0;
|
|
case QEMU_OPT_BOOL:
|
|
return parse_option_bool(opt->name, opt->str, &opt->value.boolean);
|
|
case QEMU_OPT_NUMBER:
|
|
return parse_option_number(opt->name, opt->str, &opt->value.uint);
|
|
case QEMU_OPT_SIZE:
|
|
return parse_option_size(opt->name, opt->str, &opt->value.uint);
|
|
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);
|
|
}
|
|
|
|
int qemu_opt_set(QemuOpts *opts, const char *name, const char *value)
|
|
{
|
|
QemuOpt *opt;
|
|
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 {
|
|
fprintf(stderr, "option \"%s\" is not valid for %s\n",
|
|
name, opts->list->name);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
opt = qemu_mallocz(sizeof(*opt));
|
|
opt->name = qemu_strdup(name);
|
|
opt->opts = opts;
|
|
QTAILQ_INSERT_TAIL(&opts->head, opt, next);
|
|
if (desc[i].name != NULL) {
|
|
opt->desc = desc+i;
|
|
}
|
|
if (value) {
|
|
opt->str = qemu_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_del(opt);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int qemu_opt_foreach(QemuOpts *opts, qemu_opt_loopfunc func, void *opaque,
|
|
int abort_on_failure)
|
|
{
|
|
QemuOpt *opt;
|
|
int rc = 0;
|
|
|
|
QTAILQ_FOREACH(opt, &opts->head, next) {
|
|
rc = func(opt->name, opt->str, opaque);
|
|
if (abort_on_failure && rc != 0)
|
|
break;
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
QemuOpts *qemu_opts_find(QemuOptsList *list, const char *id)
|
|
{
|
|
QemuOpts *opts;
|
|
|
|
QTAILQ_FOREACH(opts, &list->head, next) {
|
|
if (!opts->id) {
|
|
continue;
|
|
}
|
|
if (strcmp(opts->id, id) != 0) {
|
|
continue;
|
|
}
|
|
return opts;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
QemuOpts *qemu_opts_create(QemuOptsList *list, const char *id, int fail_if_exists)
|
|
{
|
|
QemuOpts *opts = NULL;
|
|
|
|
if (id) {
|
|
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);
|
|
return NULL;
|
|
} else {
|
|
return opts;
|
|
}
|
|
}
|
|
}
|
|
opts = qemu_mallocz(sizeof(*opts));
|
|
if (id) {
|
|
opts->id = qemu_strdup(id);
|
|
}
|
|
opts->list = list;
|
|
QTAILQ_INIT(&opts->head);
|
|
QTAILQ_INSERT_TAIL(&list->head, opts, next);
|
|
return opts;
|
|
}
|
|
|
|
int qemu_opts_set(QemuOptsList *list, const char *id,
|
|
const char *name, const char *value)
|
|
{
|
|
QemuOpts *opts;
|
|
|
|
opts = qemu_opts_create(list, id, 1);
|
|
if (opts == NULL) {
|
|
return -1;
|
|
}
|
|
return qemu_opt_set(opts, name, value);
|
|
}
|
|
|
|
const char *qemu_opts_id(QemuOpts *opts)
|
|
{
|
|
return opts->id;
|
|
}
|
|
|
|
void qemu_opts_del(QemuOpts *opts)
|
|
{
|
|
QemuOpt *opt;
|
|
|
|
for (;;) {
|
|
opt = QTAILQ_FIRST(&opts->head);
|
|
if (opt == NULL)
|
|
break;
|
|
qemu_opt_del(opt);
|
|
}
|
|
QTAILQ_REMOVE(&opts->list->head, opts, next);
|
|
qemu_free(opts);
|
|
}
|
|
|
|
int qemu_opts_print(QemuOpts *opts, void *dummy)
|
|
{
|
|
QemuOpt *opt;
|
|
|
|
fprintf(stderr, "%s: %s:", opts->list->name,
|
|
opts->id ? opts->id : "<noid>");
|
|
QTAILQ_FOREACH(opt, &opts->head, next) {
|
|
fprintf(stderr, " %s=\"%s\"", opt->name, opt->str);
|
|
}
|
|
fprintf(stderr, "\n");
|
|
return 0;
|
|
}
|
|
|
|
int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname)
|
|
{
|
|
char option[128], value[128];
|
|
const char *p,*pe,*pc;
|
|
|
|
for (p = params; *p != '\0'; p++) {
|
|
pe = strchr(p, '=');
|
|
pc = strchr(p, ',');
|
|
if (!pe || (pc && pc < pe)) {
|
|
/* found "foo,more" */
|
|
if (p == params && firstname) {
|
|
/* implicitly named first option */
|
|
pstrcpy(option, sizeof(option), firstname);
|
|
p = get_opt_value(value, sizeof(value), p);
|
|
} else {
|
|
/* option without value, probably a flag */
|
|
p = get_opt_name(option, sizeof(option), p, ',');
|
|
if (strncmp(option, "no", 2) == 0) {
|
|
memmove(option, option+2, strlen(option+2)+1);
|
|
pstrcpy(value, sizeof(value), "off");
|
|
} else {
|
|
pstrcpy(value, sizeof(value), "on");
|
|
}
|
|
}
|
|
} else {
|
|
/* found "foo=bar,more" */
|
|
p = get_opt_name(option, sizeof(option), p, '=');
|
|
if (*p != '=') {
|
|
break;
|
|
}
|
|
p++;
|
|
p = get_opt_value(value, sizeof(value), p);
|
|
}
|
|
if (strcmp(option, "id") != 0) {
|
|
/* store and parse */
|
|
if (qemu_opt_set(opts, option, value) == -1) {
|
|
return -1;
|
|
}
|
|
}
|
|
if (*p != ',') {
|
|
break;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, const char *firstname)
|
|
{
|
|
char value[128], *id = NULL;
|
|
const char *p;
|
|
QemuOpts *opts;
|
|
|
|
if (strncmp(params, "id=", 3) == 0) {
|
|
get_opt_value(value, sizeof(value), params+3);
|
|
id = qemu_strdup(value);
|
|
} else if ((p = strstr(params, ",id=")) != NULL) {
|
|
get_opt_value(value, sizeof(value), p+4);
|
|
id = qemu_strdup(value);
|
|
}
|
|
opts = qemu_opts_create(list, id, 1);
|
|
if (opts == NULL)
|
|
return NULL;
|
|
|
|
if (qemu_opts_do_parse(opts, params, firstname) != 0) {
|
|
qemu_opts_del(opts);
|
|
return NULL;
|
|
}
|
|
|
|
return opts;
|
|
}
|
|
|
|
/* Validate parsed opts against descriptions where no
|
|
* descriptions were provided in the QemuOptsList.
|
|
*/
|
|
int qemu_opts_validate(QemuOpts *opts, QemuOptDesc *desc)
|
|
{
|
|
QemuOpt *opt;
|
|
|
|
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) {
|
|
fprintf(stderr, "option \"%s\" is not valid for %s\n",
|
|
opt->name, opts->list->name);
|
|
return -1;
|
|
}
|
|
|
|
opt->desc = &desc[i];
|
|
|
|
if (qemu_opt_parse(opt) < 0) {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void *opaque,
|
|
int abort_on_failure)
|
|
{
|
|
QemuOpts *opts;
|
|
int rc = 0;
|
|
|
|
QTAILQ_FOREACH(opts, &list->head, next) {
|
|
rc = func(opts, opaque);
|
|
if (abort_on_failure && rc != 0)
|
|
break;
|
|
}
|
|
return rc;
|
|
}
|