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plugin/loader: handle basic help query

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As the list of options isn't fixed we do all the parsing by hand.
Without any named arguments we automatically fill the "file" option
with the value give so check if it is requesting help and dump some
basic usage text.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240729144414.830369-15-alex.bennee@linaro.org>
This commit is contained in:
Alex Bennée 2024-07-29 15:44:14 +01:00
parent 44e7948967
commit 7b690fd3d0
1 changed files with 7 additions and 1 deletions
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8
plugins/loader.c
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@ -18,6 +18,7 @@
#include "qemu/osdep.h"
#include "qemu/error-report.h"
#include "qemu/config-file.h"
#include "qemu/help_option.h"
#include "qapi/error.h"
#include "qemu/lockable.h"
#include "qemu/option.h"
@ -98,7 +99,12 @@ static int plugin_add(void *opaque, const char *name, const char *value,
bool is_on;
char *fullarg;
if (strcmp(name, "file") == 0) {
if (is_help_option(value)) {
printf("Plugin options\n");
printf(" file=<path/to/plugin.so>\n");
printf(" plugin specific arguments\n");
exit(0);
} else if (strcmp(name, "file") == 0) {
if (strcmp(value, "") == 0) {
error_setg(errp, "requires a non-empty argument");
return 1;