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[Qemu-devel] [PATCH v2 1/6] qemu-option: Introduce has_help_option()
From: |
Kevin Wolf |
Subject: |
[Qemu-devel] [PATCH v2 1/6] qemu-option: Introduce has_help_option() |
Date: |
Thu, 20 Feb 2014 15:57:18 +0100 |
This new function checks if any help option ('help' or '?') occurs
anywhere in an option string, so that things like 'cluster_size=4k,help'
are recognised.
Signed-off-by: Kevin Wolf <address@hidden>
---
include/qemu/option.h | 1 +
util/qemu-option.c | 24 ++++++++++++++++++++++++
2 files changed, 25 insertions(+)
diff --git a/include/qemu/option.h b/include/qemu/option.h
index 3ea871a..8d44167 100644
--- a/include/qemu/option.h
+++ b/include/qemu/option.h
@@ -79,6 +79,7 @@ void parse_option_size(const char *name, const char *value,
void free_option_parameters(QEMUOptionParameter *list);
void print_option_parameters(QEMUOptionParameter *list);
void print_option_help(QEMUOptionParameter *list);
+bool has_help_option(const char *param);
/* ------------------------------------------------------------------ */
diff --git a/util/qemu-option.c b/util/qemu-option.c
index 668e5d9..ce1eba8 100644
--- a/util/qemu-option.c
+++ b/util/qemu-option.c
@@ -450,6 +450,30 @@ fail:
return NULL;
}
+bool has_help_option(const char *param)
+{
+ size_t buflen = strlen(param) + 1;
+ char *buf = g_malloc0(buflen);
+ const char *p = param;
+ bool result = false;
+
+ while (*p) {
+ p = get_opt_value(buf, buflen, p);
+ if (*p) {
+ p++;
+ }
+
+ if (is_help_option(buf)) {
+ result = true;
+ goto out;
+ }
+ }
+
+out:
+ free(buf);
+ return result;
+}
+
/*
* Prints all options of a list that have a value to stdout
*/
--
1.8.1.4