2 * Commandline option parsing functions
4 * Copyright (c) 2003-2008 Fabrice Bellard
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
26 #ifndef QEMU_OPTIONS_H
27 #define QEMU_OPTIONS_H
30 #include "qemu/queue.h"
31 #include "qapi/error.h"
32 #include "qapi/qmp/qdict.h"
34 enum QEMUOptionParType {
41 typedef struct QEMUOptionParameter {
43 enum QEMUOptionParType type;
49 } QEMUOptionParameter;
52 const char *get_opt_name(char *buf, int buf_size, const char *p, char delim);
53 const char *get_opt_value(char *buf, int buf_size, const char *p);
54 int get_next_param_value(char *buf, int buf_size,
55 const char *tag, const char **pstr);
56 int get_param_value(char *buf, int buf_size,
57 const char *tag, const char *str);
61 * The following functions take a parameter list as input. This is a pointer to
62 * the first element of a QEMUOptionParameter array which is terminated by an
63 * entry with entry->name == NULL.
66 QEMUOptionParameter *get_option_parameter(QEMUOptionParameter *list,
68 int set_option_parameter(QEMUOptionParameter *list, const char *name,
70 int set_option_parameter_int(QEMUOptionParameter *list, const char *name,
72 QEMUOptionParameter *append_option_parameters(QEMUOptionParameter *dest,
73 QEMUOptionParameter *list);
74 QEMUOptionParameter *parse_option_parameters(const char *param,
75 QEMUOptionParameter *list, QEMUOptionParameter *dest);
76 void parse_option_size(const char *name, const char *value,
77 uint64_t *ret, Error **errp);
78 void free_option_parameters(QEMUOptionParameter *list);
79 void print_option_parameters(QEMUOptionParameter *list);
80 void print_option_help(QEMUOptionParameter *list);
82 /* ------------------------------------------------------------------ */
84 typedef struct QemuOpt QemuOpt;
85 typedef struct QemuOpts QemuOpts;
86 typedef struct QemuOptsList QemuOptsList;
89 QEMU_OPT_STRING = 0, /* no parsing (use string as-is) */
90 QEMU_OPT_BOOL, /* on/off */
91 QEMU_OPT_NUMBER, /* simple number */
92 QEMU_OPT_SIZE, /* size, accepts (K)ilo, (M)ega, (G)iga, (T)era postfix */
95 typedef struct QemuOptDesc {
97 enum QemuOptType type;
101 struct QemuOptsList {
103 const char *implied_opt_name;
104 bool merge_lists; /* Merge multiple uses of option into a single list? */
105 QTAILQ_HEAD(, QemuOpts) head;
109 const char *qemu_opt_get(QemuOpts *opts, const char *name);
111 * qemu_opt_has_help_opt:
112 * @opts: options to search for a help request
114 * Check whether the options specified by @opts include one of the
115 * standard strings which indicate that the user is asking for a
116 * list of the valid values for a command line option (as defined
117 * by is_help_option()).
119 * Returns: true if @opts includes 'help' or equivalent.
121 bool qemu_opt_has_help_opt(QemuOpts *opts);
122 bool qemu_opt_get_bool(QemuOpts *opts, const char *name, bool defval);
123 uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval);
124 uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval);
125 int qemu_opt_unset(QemuOpts *opts, const char *name);
126 int qemu_opt_set(QemuOpts *opts, const char *name, const char *value);
127 void qemu_opt_set_err(QemuOpts *opts, const char *name, const char *value,
129 int qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val);
130 int qemu_opt_set_number(QemuOpts *opts, const char *name, int64_t val);
131 typedef int (*qemu_opt_loopfunc)(const char *name, const char *value, void *opaque);
132 int qemu_opt_foreach(QemuOpts *opts, qemu_opt_loopfunc func, void *opaque,
133 int abort_on_failure);
135 QemuOpts *qemu_opts_find(QemuOptsList *list, const char *id);
136 QemuOpts *qemu_opts_create(QemuOptsList *list, const char *id,
137 int fail_if_exists, Error **errp);
138 QemuOpts *qemu_opts_create_nofail(QemuOptsList *list);
139 void qemu_opts_reset(QemuOptsList *list);
140 void qemu_opts_loc_restore(QemuOpts *opts);
141 int qemu_opts_set(QemuOptsList *list, const char *id,
142 const char *name, const char *value);
143 const char *qemu_opts_id(QemuOpts *opts);
144 void qemu_opts_del(QemuOpts *opts);
145 void qemu_opts_validate(QemuOpts *opts, const QemuOptDesc *desc, Error **errp);
146 int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname);
147 QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, int permit_abbrev);
148 void qemu_opts_set_defaults(QemuOptsList *list, const char *params,
150 QemuOpts *qemu_opts_from_qdict(QemuOptsList *list, const QDict *qdict,
152 QDict *qemu_opts_to_qdict(QemuOpts *opts, QDict *qdict);
153 void qemu_opts_absorb_qdict(QemuOpts *opts, QDict *qdict, Error **errp);
155 typedef int (*qemu_opts_loopfunc)(QemuOpts *opts, void *opaque);
156 int qemu_opts_print(QemuOpts *opts, void *dummy);
157 int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void *opaque,
158 int abort_on_failure);