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authorMarkus Armbruster <armbru@redhat.com>2020-07-07 18:05:40 +0200
committerMarkus Armbruster <armbru@redhat.com>2020-07-10 15:01:06 +0200
commit64af7a8bad2cbda178730a842fa0d43d02415dbc (patch)
treeb9a6312d082c325cd1d1d0b1d719249076efec60 /util/qemu-option.c
parent81a8a0726a67b0f28d36201c1b9e0944e5849a76 (diff)
qemu-option: Replace opt_set() by cleaner opt_validate()
opt_set() frees its argument @value on failure. Slightly unclean; functions ideally do nothing on failure. To tidy this up, move opt_create() from opt_set() into its callers, along with the cleanup. Rename opt_set() to opt_validate(), noting its similarity to qemu_opts_validate(). Drop redundant parameter @opts; use opt->opts instead. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Message-Id: <20200707160613.848843-13-armbru@redhat.com>
Diffstat (limited to 'util/qemu-option.c')
-rw-r--r--util/qemu-option.c35
1 files changed, 19 insertions, 16 deletions
diff --git a/util/qemu-option.c b/util/qemu-option.c
index 1023fe7527..d8233b3b35 100644
--- a/util/qemu-option.c
+++ b/util/qemu-option.c
@@ -516,36 +516,39 @@ static QemuOpt *opt_create(QemuOpts *opts, const char *name, char *value,
return opt;
}
-static void opt_set(QemuOpts *opts, const char *name, char *value,
- bool prepend, bool *help_wanted, Error **errp)
+static bool opt_validate(QemuOpt *opt, bool *help_wanted,
+ Error **errp)
{
- QemuOpt *opt;
const QemuOptDesc *desc;
Error *local_err = NULL;
- desc = find_desc_by_name(opts->list->desc, name);
- if (!desc && !opts_accepts_any(opts)) {
- g_free(value);
- error_setg(errp, QERR_INVALID_PARAMETER, name);
- if (help_wanted && is_help_option(name)) {
+ 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;
+ return false;
}
- opt = opt_create(opts, name, value, prepend);
opt->desc = desc;
qemu_opt_parse(opt, &local_err);
if (local_err) {
error_propagate(errp, local_err);
- qemu_opt_del(opt);
+ return false;
}
+
+ return true;
}
void qemu_opt_set(QemuOpts *opts, const char *name, const char *value,
Error **errp)
{
- opt_set(opts, name, g_strdup(value), false, NULL, errp);
+ QemuOpt *opt = opt_create(opts, name, g_strdup(value), false);
+
+ if (!opt_validate(opt, NULL, errp)) {
+ qemu_opt_del(opt);
+ }
}
void qemu_opt_set_bool(QemuOpts *opts, const char *name, bool val,
@@ -817,9 +820,9 @@ static void opts_do_parse(QemuOpts *opts, const char *params,
const char *firstname, bool prepend,
bool *help_wanted, Error **errp)
{
- Error *local_err = NULL;
char *option, *value;
const char *p;
+ QemuOpt *opt;
for (p = params; *p;) {
p = get_opt_name_value(p, firstname, &option, &value);
@@ -831,10 +834,10 @@ static void opts_do_parse(QemuOpts *opts, const char *params,
continue;
}
- opt_set(opts, option, value, prepend, help_wanted, &local_err);
+ opt = opt_create(opts, option, value, prepend);
g_free(option);
- if (local_err) {
- error_propagate(errp, local_err);
+ if (!opt_validate(opt, help_wanted, errp)) {
+ qemu_opt_del(opt);
return;
}
}