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[PATCH for-5.2 2/4] qemu-option: move help handling to get_opt_name_valu
From: |
Paolo Bonzini |
Subject: |
[PATCH for-5.2 2/4] qemu-option: move help handling to get_opt_name_value |
Date: |
Tue, 3 Nov 2020 10:14:50 -0500 |
Right now, help options are parsed normally and then checked
specially in opt_validate---but only if coming from
qemu_opts_parse or qemu_opts_parse_noisily, not if coming
from qemu_opt_set.
Instead, move the check from opt_validate to the common workhorses
of qemu_opts_parse and qemu_opts_parse_noisily, opts_do_parse and
get_opt_name_value.
This will come in handy in a subsequent patch, which will
raise a warning for "-object memory-backend-ram,share"
("flag" option with no =on/=off part) but not for
"-object memory-backend-ram,help".
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
util/qemu-option.c | 35 ++++++++++++++++++-----------------
1 file changed, 18 insertions(+), 17 deletions(-)
diff --git a/util/qemu-option.c b/util/qemu-option.c
index b9f93a7f8b..5824b7afe2 100644
--- a/util/qemu-option.c
+++ b/util/qemu-option.c
@@ -520,17 +520,13 @@ static QemuOpt *opt_create(QemuOpts *opts, const char
*name, char *value,
return opt;
}
-static bool opt_validate(QemuOpt *opt, bool *help_wanted,
- Error **errp)
+static bool opt_validate(QemuOpt *opt, Error **errp)
{
const QemuOptDesc *desc;
desc = find_desc_by_name(opt->opts->list->desc, opt->name);
if (!desc && !opts_accepts_any(opt->opts)) {
error_setg(errp, QERR_INVALID_PARAMETER, opt->name);
- if (help_wanted && is_help_option(opt->name)) {
- *help_wanted = true;
- }
return false;
}
@@ -547,7 +543,7 @@ bool qemu_opt_set(QemuOpts *opts, const char *name, const
char *value,
{
QemuOpt *opt = opt_create(opts, name, g_strdup(value), false);
- if (!opt_validate(opt, NULL, errp)) {
+ if (!opt_validate(opt, errp)) {
qemu_opt_del(opt);
return false;
}
@@ -783,14 +779,17 @@ void qemu_opts_print(QemuOpts *opts, const char
*separator)
static const char *get_opt_name_value(const char *params,
const char *firstname,
+ bool *help_wanted,
char **name, char **value)
{
- const char *p, *pe, *pc;
-
- pe = strchr(params, '=');
- pc = strchr(params, ',');
+ const char *p;
+ size_t len;
- if (!pe || (pc && pc < pe)) {
+ len = strcspn(params, "=,");
+ if (params[len] != '=') {
+ if (help_wanted && starts_with_help_option(params) == len) {
+ *help_wanted = true;
+ }
/* found "foo,more" */
if (firstname) {
/* implicitly named first option */
@@ -830,7 +829,10 @@ static bool opts_do_parse(QemuOpts *opts, const char
*params,
QemuOpt *opt;
for (p = params; *p;) {
- p = get_opt_name_value(p, firstname, &option, &value);
+ p = get_opt_name_value(p, firstname, help_wanted, &option, &value);
+ if (help_wanted && *help_wanted) {
+ return false;
+ }
firstname = NULL;
if (!strcmp(option, "id")) {
@@ -841,7 +843,7 @@ static bool opts_do_parse(QemuOpts *opts, const char
*params,
opt = opt_create(opts, option, value, prepend);
g_free(option);
- if (!opt_validate(opt, help_wanted, errp)) {
+ if (!opt_validate(opt, errp)) {
qemu_opt_del(opt);
return false;
}
@@ -856,7 +858,7 @@ static char *opts_parse_id(const char *params)
char *name, *value;
for (p = params; *p;) {
- p = get_opt_name_value(p, NULL, &name, &value);
+ p = get_opt_name_value(p, NULL, NULL, &name, &value);
if (!strcmp(name, "id")) {
g_free(name);
return value;
@@ -872,11 +874,10 @@ bool has_help_option(const char *params)
{
const char *p;
char *name, *value;
- bool ret;
+ bool ret = false;
for (p = params; *p;) {
- p = get_opt_name_value(p, NULL, &name, &value);
- ret = is_help_option(name);
+ p = get_opt_name_value(p, NULL, &ret, &name, &value);
g_free(name);
g_free(value);
if (ret) {
--
2.26.2
- [PATCH for-5.2 1/4] ivshmem-test: do not use short-form boolean option, (continued)
[PATCH for-5.2 2/4] qemu-option: move help handling to get_opt_name_value,
Paolo Bonzini <=
[PATCH for-5.2 3/4] qtest: escape device name in device-introspect-test, Paolo Bonzini, 2020/11/03
Re: [PATCH for-5.2 0/4] deprecate short-form boolean options, no-reply, 2020/11/03