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[Qemu-devel] [PATCH V26 09/32] QemuOpts: add conversion between QEMUOpti
From: |
Chunyan Liu |
Subject: |
[Qemu-devel] [PATCH V26 09/32] QemuOpts: add conversion between QEMUOptionParameter to QemuOpts |
Date: |
Tue, 29 Apr 2014 17:10:33 +0800 |
Add two temp conversion functions between QEMUOptionParameter to QemuOpts,
so that next patch can use it. It will simplify later patch for easier
review. And will be finally removed after all backend drivers switch to
QemuOpts.
Reviewed-by: Stefan Hajnoczi <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
Signed-off-by: Chunyan Liu <address@hidden>
---
include/qemu/option.h | 9 +++
util/qemu-option.c | 153 ++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 162 insertions(+)
diff --git a/include/qemu/option.h b/include/qemu/option.h
index fbf5dc2..e98e8ef 100644
--- a/include/qemu/option.h
+++ b/include/qemu/option.h
@@ -103,6 +103,12 @@ typedef struct QemuOptDesc {
} QemuOptDesc;
struct QemuOptsList {
+ /* FIXME: Temp used for QEMUOptionParamter->QemuOpts conversion to
+ * indicate the need to free memory. Will remove after all drivers
+ * switch to QemuOpts.
+ */
+ bool allocated;
+
const char *name;
const char *implied_opt_name;
bool merge_lists; /* Merge multiple uses of option into a single list? */
@@ -167,5 +173,8 @@ void qemu_opts_print(QemuOpts *opts);
int qemu_opts_foreach(QemuOptsList *list, qemu_opts_loopfunc func, void
*opaque,
int abort_on_failure);
void qemu_opts_print_help(QemuOptsList *list);
+void qemu_opts_free(QemuOptsList *list);
+QEMUOptionParameter *opts_to_params(QemuOpts *opts);
+QemuOptsList *params_to_opts(QEMUOptionParameter *list);
#endif
diff --git a/util/qemu-option.c b/util/qemu-option.c
index adb7c3c..93ffcd5 100644
--- a/util/qemu-option.c
+++ b/util/qemu-option.c
@@ -1345,3 +1345,156 @@ int qemu_opts_foreach(QemuOptsList *list,
qemu_opts_loopfunc func, void *opaque,
loc_pop(&loc);
return rc;
}
+
+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;
+}
+
+/* Convert QEMUOptionParameter to QemuOpts
+ * FIXME: this function will be removed after all drivers
+ * switch to QemuOpts
+ */
+QemuOptsList *params_to_opts(QEMUOptionParameter *list)
+{
+ QemuOptsList *opts = NULL;
+ size_t num_opts, i = 0;
+
+ if (!list) {
+ return NULL;
+ }
+
+ num_opts = count_option_parameters(list);
+ opts = g_malloc0(sizeof(QemuOptsList) +
+ (num_opts + 1) * sizeof(QemuOptDesc));
+ QTAILQ_INIT(&opts->head);
+ /* (const char *) members will point to malloced space and need to free */
+ opts->allocated = true;
+
+ while (list && list->name) {
+ opts->desc[i].name = g_strdup(list->name);
+ opts->desc[i].help = g_strdup(list->help);
+ switch (list->type) {
+ case OPT_FLAG:
+ opts->desc[i].type = QEMU_OPT_BOOL;
+ opts->desc[i].def_value_str =
+ g_strdup(list->value.n ? "on" : "off");
+ break;
+
+ case OPT_NUMBER:
+ opts->desc[i].type = QEMU_OPT_NUMBER;
+ if (list->value.n) {
+ opts->desc[i].def_value_str =
+ g_strdup_printf("%" PRIu64, list->value.n);
+ }
+ break;
+
+ case OPT_SIZE:
+ opts->desc[i].type = QEMU_OPT_SIZE;
+ if (list->value.n) {
+ opts->desc[i].def_value_str =
+ g_strdup_printf("%" PRIu64, list->value.n);
+ }
+ break;
+
+ case OPT_STRING:
+ opts->desc[i].type = QEMU_OPT_STRING;
+ opts->desc[i].def_value_str = g_strdup(list->value.s);
+ break;
+ }
+
+ i++;
+ list++;
+ }
+
+ return opts;
+}
+
+/* convert QemuOpts to QEMUOptionParameter
+ * Note: result QEMUOptionParameter has shorter lifetime than
+ * input QemuOpts.
+ * FIXME: this function will be removed after all drivers
+ * switch to QemuOpts
+ */
+QEMUOptionParameter *opts_to_params(QemuOpts *opts)
+{
+ QEMUOptionParameter *dest = NULL;
+ QemuOptDesc *desc;
+ size_t num_opts, i = 0;
+ const char *tmp;
+
+ if (!opts || !opts->list || !opts->list->desc) {
+ return NULL;
+ }
+ assert(!opts_accepts_any(opts));
+
+ num_opts = count_opts_list(opts->list);
+ dest = g_malloc0((num_opts + 1) * sizeof(QEMUOptionParameter));
+
+ desc = opts->list->desc;
+ while (desc && desc->name) {
+ dest[i].name = desc->name;
+ dest[i].help = desc->help;
+ dest[i].assigned = qemu_opt_find(opts, desc->name) ? true : false;
+ switch (desc->type) {
+ case QEMU_OPT_STRING:
+ dest[i].type = OPT_STRING;
+ tmp = qemu_opt_get(opts, desc->name);
+ dest[i].value.s = g_strdup(tmp);
+ break;
+
+ case QEMU_OPT_BOOL:
+ dest[i].type = OPT_FLAG;
+ dest[i].value.n = qemu_opt_get_bool(opts, desc->name, 0) ? 1 : 0;
+ break;
+
+ case QEMU_OPT_NUMBER:
+ dest[i].type = OPT_NUMBER;
+ dest[i].value.n = qemu_opt_get_number(opts, desc->name, 0);
+ break;
+
+ case QEMU_OPT_SIZE:
+ dest[i].type = OPT_SIZE;
+ dest[i].value.n = qemu_opt_get_size(opts, desc->name, 0);
+ break;
+ }
+
+ i++;
+ desc++;
+ }
+
+ return dest;
+}
+
+void qemu_opts_free(QemuOptsList *list)
+{
+ /* List members point to new malloced space and need to be freed.
+ * FIXME:
+ * Introduced for QEMUOptionParamter->QemuOpts conversion.
+ * Will remove after all drivers switch to QemuOpts.
+ */
+ if (list && list->allocated) {
+ QemuOptDesc *desc = list->desc;
+ while (desc && desc->name) {
+ g_free((char *)desc->name);
+ g_free((char *)desc->help);
+ g_free((char *)desc->def_value_str);
+ desc++;
+ }
+ }
+
+ g_free(list);
+}
--
1.8.4.5
- [Qemu-devel] [PATCH V26 03/32] QemuOpts: repurpose qemu_opts_print to replace print_option_parameters, (continued)
- [Qemu-devel] [PATCH V26 03/32] QemuOpts: repurpose qemu_opts_print to replace print_option_parameters, Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 01/32] QemuOpts: move find_desc_by_name ahead for later calling, Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 02/32] QemuOpts: add def_value_str to QemuOptDesc, Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 04/32] qapi: output def_value_str when query command line options, Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 05/32] QemuOpts: change opt->name|str from (const char *) to (char *), Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 08/32] QemuOpts: add qemu_opts_print_help to replace print_option_help, Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 10/32] QemuOpts: add qemu_opts_append to replace append_option_parameters, Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 09/32] QemuOpts: add conversion between QEMUOptionParameter to QemuOpts,
Chunyan Liu <=
- [Qemu-devel] [PATCH V26 11/32] QemuOpts: check NULL input for qemu_opts_del, Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 06/32] QemuOpts: move qemu_opt_del ahead for later calling, Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 12/32] change block layer to support both QemuOpts and QEMUOptionParamter, Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 07/32] QemuOpts: add qemu_opt_get_*_del functions for replace work, Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 13/32] vvfat.c: handle cross_driver's create_options and create_opts, Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 14/32] cow.c: replace QEMUOptionParameter with QemuOpts, Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 15/32] gluster.c: replace QEMUOptionParameter with QemuOpts, Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 18/32] qcow.c: replace QEMUOptionParameter with QemuOpts, Chunyan Liu, 2014/04/29
- [Qemu-devel] [PATCH V26 16/32] iscsi.c: replace QEMUOptionParameter with QemuOpts, Chunyan Liu, 2014/04/29