From 7cc07ab8daa01f100f36ab63382d491f2d278c64 Mon Sep 17 00:00:00 2001 From: Kevin Wolf Date: Fri, 21 Feb 2014 16:24:03 +0100 Subject: qemu-option: has_help_option() and is_valid_option_list() has_help_option() checks if any help option ('help' or '?') occurs anywhere in an option string, so that things like 'cluster_size=4k,help' are recognised. is_valid_option_list() ensures that the option list doesn't have options with leading commas or trailing unescaped commas. Signed-off-by: Kevin Wolf Reviewed-by: Jeff Cody Reviewed-by: Eric Blake --- util/qemu-option.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) (limited to 'util') diff --git a/util/qemu-option.c b/util/qemu-option.c index fd76cd2ada..9d898af443 100644 --- a/util/qemu-option.c +++ b/util/qemu-option.c @@ -450,6 +450,55 @@ 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; +} + +bool is_valid_option_list(const char *param) +{ + size_t buflen = strlen(param) + 1; + char *buf = g_malloc0(buflen); + const char *p = param; + bool result = true; + + while (*p) { + p = get_opt_value(buf, buflen, p); + if (*p && !*++p) { + result = false; + goto out; + } + + if (!*buf || *buf == ',') { + result = false; + goto out; + } + } + +out: + free(buf); + return result; +} + /* * Prints all options of a list that have a value to stdout */ -- cgit v1.2.1