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Several qemu command line options have a parameter whose value affects what other parameters are accepted for the option. In these cases, we can have an empty description table in the QemuOptsList and once the option has been parsed we can use a suitable description table to validate the other parameters based on the value of that parameter. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
127 lines
4.9 KiB
C
127 lines
4.9 KiB
C
/*
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* Commandline option parsing functions
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*
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* Copyright (c) 2003-2008 Fabrice Bellard
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* Copyright (c) 2009 Kevin Wolf <kwolf@redhat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef QEMU_OPTIONS_H
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#define QEMU_OPTIONS_H
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#include <stdint.h>
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#include "qemu-queue.h"
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enum QEMUOptionParType {
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OPT_FLAG,
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OPT_NUMBER,
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OPT_SIZE,
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OPT_STRING,
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};
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typedef struct QEMUOptionParameter {
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const char *name;
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enum QEMUOptionParType type;
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union {
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uint64_t n;
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char* s;
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} value;
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const char *help;
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} QEMUOptionParameter;
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const char *get_opt_name(char *buf, int buf_size, const char *p, char delim);
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const char *get_opt_value(char *buf, int buf_size, const char *p);
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int get_next_param_value(char *buf, int buf_size,
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const char *tag, const char **pstr);
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int get_param_value(char *buf, int buf_size,
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const char *tag, const char *str);
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int check_params(char *buf, int buf_size,
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const char * const *params, const char *str);
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/*
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* The following functions take a parameter list as input. This is a pointer to
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* the first element of a QEMUOptionParameter array which is terminated by an
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* entry with entry->name == NULL.
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*/
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QEMUOptionParameter *get_option_parameter(QEMUOptionParameter *list,
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const char *name);
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int set_option_parameter(QEMUOptionParameter *list, const char *name,
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const char *value);
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int set_option_parameter_int(QEMUOptionParameter *list, const char *name,
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uint64_t value);
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QEMUOptionParameter *parse_option_parameters(const char *param,
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QEMUOptionParameter *list, QEMUOptionParameter *dest);
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void free_option_parameters(QEMUOptionParameter *list);
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void print_option_parameters(QEMUOptionParameter *list);
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void print_option_help(QEMUOptionParameter *list);
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/* ------------------------------------------------------------------ */
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typedef struct QemuOpt QemuOpt;
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typedef struct QemuOpts QemuOpts;
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typedef struct QemuOptsList QemuOptsList;
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enum QemuOptType {
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QEMU_OPT_STRING = 0, /* no parsing (use string as-is) */
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QEMU_OPT_BOOL, /* on/off */
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QEMU_OPT_NUMBER, /* simple number */
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QEMU_OPT_SIZE, /* size, accepts (K)ilo, (M)ega, (G)iga, (T)era postfix */
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};
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typedef struct QemuOptDesc {
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const char *name;
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enum QemuOptType type;
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const char *help;
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} QemuOptDesc;
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struct QemuOptsList {
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const char *name;
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QTAILQ_HEAD(, QemuOpts) head;
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QemuOptDesc desc[];
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};
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const char *qemu_opt_get(QemuOpts *opts, const char *name);
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int qemu_opt_get_bool(QemuOpts *opts, const char *name, int defval);
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uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval);
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uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval);
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int qemu_opt_set(QemuOpts *opts, const char *name, const char *value);
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typedef int (*qemu_opt_loopfunc)(const char *name, const char *value, void *opaque);
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int qemu_opt_foreach(QemuOpts *opts, qemu_opt_loopfunc func, void *opaque,
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int abort_on_failure);
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QemuOpts *qemu_opts_find(QemuOptsList *list, const char *id);
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QemuOpts *qemu_opts_create(QemuOptsList *list, const char *id, int fail_if_exists);
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int qemu_opts_set(QemuOptsList *list, const char *id,
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const char *name, const char *value);
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const char *qemu_opts_id(QemuOpts *opts);
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void qemu_opts_del(QemuOpts *opts);
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int qemu_opts_validate(QemuOpts *opts, QemuOptDesc *desc);
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int qemu_opts_do_parse(QemuOpts *opts, const char *params, const char *firstname);
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QemuOpts *qemu_opts_parse(QemuOptsList *list, const char *params, const char *firstname);
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typedef int (*qemu_opts_loopfunc)(QemuOpts *opts, void *opaque);
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int qemu_opts_print(QemuOpts *opts, void *dummy);
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int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void *opaque,
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int abort_on_failure);
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#endif
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