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qemu-img: Clean up global variable shadowing

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Fix:

  qemu-img.c:247:46: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  static bool is_valid_option_list(const char *optarg)
                                               ^
  qemu-img.c:265:53: error: declaration shadows a variable in the global scope [-Werror,-Wshadow]
  static int accumulate_options(char **options, char *optarg)
                                                      ^
  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/getopt.h:77:14: note: previous declaration is here
  extern char *optarg;                    /* getopt(3) external variables */
               ^

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004120019.93101-7-philmd@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2023-10-04 14:00:09 +02:00 committed by Markus Armbruster
parent 82f3346ff4
commit 46bb944efd
1 changed files with 11 additions and 11 deletions
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22
qemu-img.c
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@ -235,25 +235,25 @@ void help(void)
}
/*
* Is @optarg safe for accumulate_options()?
* Is @list safe for accumulate_options()?
* It is when multiple of them can be joined together separated by ','.
* To make that work, @optarg must not start with ',' (or else a
* To make that work, @list must not start with ',' (or else a
* separating ',' preceding it gets escaped), and it must not end with
* an odd number of ',' (or else a separating ',' following it gets
* escaped), or be empty (or else a separating ',' preceding it can
* escape a separating ',' following it).
*
*/
static bool is_valid_option_list(const char *optarg)
static bool is_valid_option_list(const char *list)
{
size_t len = strlen(optarg);
size_t len = strlen(list);
size_t i;
if (!optarg[0] || optarg[0] == ',') {
if (!list[0] || list[0] == ',') {
return false;
}
for (i = len; i > 0 && optarg[i - 1] == ','; i--) {
for (i = len; i > 0 && list[i - 1] == ','; i--) {
}
if ((len - i) % 2) {
return false;
@ -262,19 +262,19 @@ static bool is_valid_option_list(const char *optarg)
return true;
}
static int accumulate_options(char **options, char *optarg)
static int accumulate_options(char **options, char *list)
{
char *new_options;
if (!is_valid_option_list(optarg)) {
error_report("Invalid option list: %s", optarg);
if (!is_valid_option_list(list)) {
error_report("Invalid option list: %s", list);
return -1;
}
if (!*options) {
*options = g_strdup(optarg);
*options = g_strdup(list);
} else {
new_options = g_strdup_printf("%s,%s", *options, optarg);
new_options = g_strdup_printf("%s,%s", *options, list);
g_free(*options);
*options = new_options;
}