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[Qemu-devel] [v19 01/25] add def_value_str to QemuOptDesc
From: |
Chunyan Liu |
Subject: |
[Qemu-devel] [v19 01/25] add def_value_str to QemuOptDesc |
Date: |
Mon, 20 Jan 2014 22:19:44 +0800 |
Add def_value_str (default value) to QemuOptDesc, to replace function of the
default value in QEMUOptionParameter. And improved related functions.
Signed-off-by: Dong Xu Wang <address@hidden>
Signed-off-by: Chunyan Liu <address@hidden>
---
include/qemu/option.h | 3 +-
util/qemu-option.c | 76 ++++++++++++++++++++++++++++++++++++++++++------
2 files changed, 68 insertions(+), 11 deletions(-)
diff --git a/include/qemu/option.h b/include/qemu/option.h
index 3ea871a..2c5b03f 100644
--- a/include/qemu/option.h
+++ b/include/qemu/option.h
@@ -97,6 +97,7 @@ typedef struct QemuOptDesc {
const char *name;
enum QemuOptType type;
const char *help;
+ const char *def_value_str;
} QemuOptDesc;
struct QemuOptsList {
@@ -154,7 +155,7 @@ QDict *qemu_opts_to_qdict(QemuOpts *opts, QDict *qdict);
void qemu_opts_absorb_qdict(QemuOpts *opts, QDict *qdict, Error **errp);
typedef int (*qemu_opts_loopfunc)(QemuOpts *opts, void *opaque);
-int qemu_opts_print(QemuOpts *opts, void *dummy);
+void qemu_opts_print(QemuOpts *opts);
int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void
*opaque,
int abort_on_failure);
diff --git a/util/qemu-option.c b/util/qemu-option.c
index 668e5d9..fd84f95 100644
--- a/util/qemu-option.c
+++ b/util/qemu-option.c
@@ -33,6 +33,9 @@
#include "qapi/qmp/qerror.h"
#include "qemu/option_int.h"
+static const QemuOptDesc *find_desc_by_name(const QemuOptDesc *desc,
+ const char *name);
+
/*
* Extracts the name of an option from the parameter string (p points at the
* first byte of the option name)
@@ -507,6 +510,14 @@ static QemuOpt *qemu_opt_find(QemuOpts *opts, const char
*name)
const char *qemu_opt_get(QemuOpts *opts, const char *name)
{
QemuOpt *opt = qemu_opt_find(opts, name);
+ const QemuOptDesc *desc;
+
+ if (!opt) {
+ desc = find_desc_by_name(opts->list->desc, name);
+ if (desc && desc->def_value_str) {
+ return desc->def_value_str;
+ }
+ }
return opt ? opt->str : NULL;
}
@@ -525,9 +536,17 @@ bool qemu_opt_has_help_opt(QemuOpts *opts)
bool qemu_opt_get_bool(QemuOpts *opts, const char *name, bool defval)
{
QemuOpt *opt = qemu_opt_find(opts, name);
+ const QemuOptDesc *desc;
+ Error *local_err = NULL;
- if (opt == NULL)
+ if (opt == NULL) {
+ desc = find_desc_by_name(opts->list->desc, name);
+ if (desc && desc->def_value_str) {
+ parse_option_bool(name, desc->def_value_str, &defval, &local_err);
+ assert(!local_err);
+ }
return defval;
+ }
assert(opt->desc && opt->desc->type == QEMU_OPT_BOOL);
return opt->value.boolean;
}
@@ -535,9 +554,17 @@ bool qemu_opt_get_bool(QemuOpts *opts, const char *name,
bool defval)
uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval)
{
QemuOpt *opt = qemu_opt_find(opts, name);
+ const QemuOptDesc *desc;
+ Error *local_err = NULL;
- if (opt == NULL)
+ if (opt == NULL) {
+ desc = find_desc_by_name(opts->list->desc, name);
+ if (desc && desc->def_value_str) {
+ parse_option_number(name, desc->def_value_str, &defval,
&local_err);
+ assert(!local_err);
+ }
return defval;
+ }
assert(opt->desc && opt->desc->type == QEMU_OPT_NUMBER);
return opt->value.uint;
}
@@ -545,9 +572,17 @@ uint64_t qemu_opt_get_number(QemuOpts *opts, const char
*name, uint64_t defval)
uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval)
{
QemuOpt *opt = qemu_opt_find(opts, name);
+ const QemuOptDesc *desc;
+ Error *local_err = NULL;
- if (opt == NULL)
+ if (opt == NULL) {
+ desc = find_desc_by_name(opts->list->desc, name);
+ if (desc && desc->def_value_str) {
+ parse_option_size(name, desc->def_value_str, &defval, &local_err);
+ assert(!local_err);
+ }
return defval;
+ }
assert(opt->desc && opt->desc->type == QEMU_OPT_SIZE);
return opt->value.uint;
}
@@ -846,17 +881,38 @@ void qemu_opts_del(QemuOpts *opts)
g_free(opts);
}
-int qemu_opts_print(QemuOpts *opts, void *dummy)
+void qemu_opts_print(QemuOpts *opts)
{
QemuOpt *opt;
+ QemuOptDesc *desc = opts->list->desc;
- 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);
+ if (desc[0].name == NULL) {
+ QTAILQ_FOREACH(opt, &opts->head, next) {
+ printf("%s=\"%s\" ", opt->name, opt->str);
+ }
+ return;
+ }
+ for (; desc && desc->name; desc++) {
+ const char *value = desc->def_value_str;
+ QemuOpt *opt;
+
+ opt = qemu_opt_find(opts, desc->name);
+ if (opt) {
+ value = opt->str;
+ }
+
+ if (!value) {
+ continue;
+ }
+
+ if (desc->type == QEMU_OPT_STRING) {
+ printf("%s='%s' ", desc->name, value);
+ } else if (desc->type == QEMU_OPT_SIZE && opt) {
+ printf("%s=%" PRIu64 " ", desc->name, opt->value.uint);
+ } else {
+ printf("%s=%s ", desc->name, value);
+ }
}
- fprintf(stderr, "\n");
- return 0;
}
static int opts_do_parse(QemuOpts *opts, const char *params,
--
1.6.0.2
- [Qemu-devel] [v19 00/25] replace QEMUOptionParameter with QemuOpts, Chunyan Liu, 2014/01/20
- [Qemu-devel] [v19 01/25] add def_value_str to QemuOptDesc,
Chunyan Liu <=
- [Qemu-devel] [v19 02/25] qapi: output def_value_str when query command line options, Chunyan Liu, 2014/01/20
- [Qemu-devel] [v19 03/25] improve some functions in qemu-option.c, Chunyan Liu, 2014/01/20
- [Qemu-devel] [v19 06/25] cow.c: replace QEMUOptionParameter with QemuOpts, Chunyan Liu, 2014/01/20
- [Qemu-devel] [v19 04/25] add some QemuOpts functions for replace work, Chunyan Liu, 2014/01/20
- [Qemu-devel] [v19 05/25] change block layer to support both QemuOpts and QEMUOptionParameter, Chunyan Liu, 2014/01/20