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[Qemu-devel] [PATCH v20 04/26] add some QemuOpts functions for replace w
From: |
Chunyan Liu |
Subject: |
[Qemu-devel] [PATCH v20 04/26] add some QemuOpts functions for replace work |
Date: |
Wed, 12 Feb 2014 14:33:04 +0800 |
Add some qemu_opt functions to replace the same functionality of
QEMUOptionParameter handling.
Signed-off-by: Dong Xu Wang <address@hidden>
Signed-off-by: Chunyan Liu <address@hidden>
---
include/qemu/option.h | 9 +++
util/qemu-option.c | 134 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 143 insertions(+), 0 deletions(-)
diff --git a/include/qemu/option.h b/include/qemu/option.h
index 2c5b03f..3957604 100644
--- a/include/qemu/option.h
+++ b/include/qemu/option.h
@@ -109,6 +109,7 @@ struct QemuOptsList {
};
const char *qemu_opt_get(QemuOpts *opts, const char *name);
+const char *qemu_opt_get_del(QemuOpts *opts, const char *name);
/**
* qemu_opt_has_help_opt:
* @opts: options to search for a help request
@@ -124,6 +125,11 @@ bool qemu_opt_has_help_opt(QemuOpts *opts);
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);
uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval);
+bool qemu_opt_get_bool_del(QemuOpts *opts, const char *name, bool defval);
+uint64_t qemu_opt_get_number_del(QemuOpts *opts, const char *name,
+ uint64_t defval);
+uint64_t qemu_opt_get_size_del(QemuOpts *opts, const char *name,
+ uint64_t defval);
int qemu_opt_unset(QemuOpts *opts, const char *name);
int qemu_opt_set(QemuOpts *opts, const char *name, const char *value);
void qemu_opt_set_err(QemuOpts *opts, const char *name, const char *value,
@@ -159,4 +165,7 @@ void qemu_opts_print(QemuOpts *opts);
int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void
*opaque,
int abort_on_failure);
+QemuOptsList *qemu_opts_append(QemuOptsList *dst, QemuOptsList *list);
+void qemu_opts_free(QemuOptsList *list);
+void qemu_opts_print_help(QemuOptsList *list);
#endif
diff --git a/util/qemu-option.c b/util/qemu-option.c
index ea6793a..21699d0 100644
--- a/util/qemu-option.c
+++ b/util/qemu-option.c
@@ -379,6 +379,74 @@ QEMUOptionParameter
*append_option_parameters(QEMUOptionParameter *dest,
return dest;
}
+static size_t count_opts_list(QemuOptsList *list)
+{
+ QemuOptDesc *desc = NULL;
+ size_t num_opts = 0;
+
+ if (!list) {
+ return 0;
+ }
+
+ desc = list->desc;
+ while (desc && desc->name) {
+ num_opts++;
+ desc++;
+ }
+
+ return num_opts;
+}
+
+/* Create a new QemuOptsList with a desc of the merge of the first
+ * and second. It will allocate space for one new QemuOptsList plus
+ * enough space for QemuOptDesc in first and second QemuOptsList.
+ * First argument's QemuOptDesc members take precedence over second's.
+ * The result's name and implied_opt_name are not copied from them.
+ * Both merge_lists should not be set. Both lists can be NULL.
+ */
+QemuOptsList *qemu_opts_append(QemuOptsList *dst,
+ QemuOptsList *list)
+{
+ size_t num_opts, num_dst_opts;
+ QemuOptsList *tmp;
+ QemuOptDesc *desc;
+
+ if (!dst && !list) {
+ return NULL;
+ }
+
+ num_opts = count_opts_list(dst);
+ num_opts += count_opts_list(list);
+ tmp = g_malloc0(sizeof(QemuOptsList) +
+ (num_opts + 1) * sizeof(QemuOptDesc));
+ QTAILQ_INIT(&tmp->head);
+ num_dst_opts = 0;
+
+ /* copy dst->desc to new list */
+ if (dst) {
+ desc = dst->desc;
+ while (desc && desc->name) {
+ tmp->desc[num_dst_opts++] = *desc;
+ tmp->desc[num_dst_opts].name = NULL;
+ desc++;
+ }
+ }
+
+ /* add list->desc to new list */
+ if (list) {
+ desc = list->desc;
+ while (desc && desc->name) {
+ if (find_desc_by_name(tmp->desc, desc->name) == NULL) {
+ tmp->desc[num_dst_opts++] = *desc;
+ tmp->desc[num_dst_opts].name = NULL;
+ }
+ desc++;
+ }
+ }
+
+ return tmp;
+}
+
/*
* Parses a parameter string (param) into an option list (dest).
*
@@ -529,6 +597,18 @@ const char *qemu_opt_get(QemuOpts *opts, const char *name)
return opt ? opt->str : NULL;
}
+static void qemu_opt_del(QemuOpt *opt);
+
+const char *qemu_opt_get_del(QemuOpts *opts, const char *name)
+{
+ const char *str = qemu_opt_get(opts, name);
+ QemuOpt *opt = qemu_opt_find(opts, name);
+ if (opt) {
+ qemu_opt_del(opt);
+ }
+ return str;
+}
+
bool qemu_opt_has_help_opt(QemuOpts *opts)
{
QemuOpt *opt;
@@ -565,6 +645,16 @@ bool qemu_opt_get_bool(QemuOpts *opts, const char *name,
bool defval)
return opt->value.boolean;
}
+bool qemu_opt_get_bool_del(QemuOpts *opts, const char *name, bool defval)
+{
+ bool ret = qemu_opt_get_bool(opts, name, defval);
+ QemuOpt *opt = qemu_opt_find(opts, name);
+ if (opt) {
+ qemu_opt_del(opt);
+ }
+ return ret;
+}
+
uint64_t qemu_opt_get_number(QemuOpts *opts, const char *name, uint64_t defval)
{
QemuOpt *opt;
@@ -589,6 +679,18 @@ uint64_t qemu_opt_get_number(QemuOpts *opts, const char
*name, uint64_t defval)
return opt->value.uint;
}
+uint64_t qemu_opt_get_number_del(QemuOpts *opts,
+ const char *name,
+ uint64_t defval)
+{
+ uint64_t ret = qemu_opt_get_number(opts, name, defval);
+ QemuOpt *opt = qemu_opt_find(opts, name);
+ if (opt) {
+ qemu_opt_del(opt);
+ }
+ return ret;
+}
+
uint64_t qemu_opt_get_size(QemuOpts *opts, const char *name, uint64_t defval)
{
QemuOpt *opt;
@@ -612,6 +714,17 @@ uint64_t qemu_opt_get_size(QemuOpts *opts, const char
*name, uint64_t defval)
return opt->value.uint;
}
+uint64_t qemu_opt_get_size_del(QemuOpts *opts, const char *name,
+ uint64_t defval)
+{
+ uint64_t ret = qemu_opt_get_size(opts, name, defval);
+ QemuOpt *opt = qemu_opt_find(opts, name);
+ if (opt) {
+ qemu_opt_del(opt);
+ }
+ return ret;
+}
+
static void qemu_opt_parse(QemuOpt *opt, Error **errp)
{
if (opt->desc == NULL)
@@ -1265,3 +1378,24 @@ int qemu_opts_foreach(QemuOptsList *list,
qemu_opts_loopfunc func, void *opaque,
loc_pop(&loc);
return rc;
}
+
+/* free a QemuOptsList, can accept NULL as arguments */
+void qemu_opts_free(QemuOptsList *list)
+{
+ if (!list) {
+ return;
+ }
+
+ g_free(list);
+}
+
+void qemu_opts_print_help(QemuOptsList *list)
+{
+ int i;
+ printf("Supported options:\n");
+ for (i = 0; list && list->desc[i].name; i++) {
+ printf("%-16s %s\n", list->desc[i].name,
+ list->desc[i].help ?
+ list->desc[i].help : "");
+ }
+}
--
1.6.0.2