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authorVladimír Čunát <vladimir.cunat@nic.cz>2024-12-20 13:27:41 +0100
committerVladimír Čunát <vladimir.cunat@nic.cz>2024-12-20 13:27:41 +0100
commitefbb03116feb37736f5dad3cd7d6a80c44b1e478 (patch)
treedc477efbd0ae5a99e52a7365ac737b9f1b34db1e
parentkr_module_load(): avoid calling deinit() on errors (diff)
downloadknot-resolver-efbb03116feb37736f5dad3cd7d6a80c44b1e478.tar.xz
knot-resolver-efbb03116feb37736f5dad3cd7d6a80c44b1e478.zip
kr_module_load(): don't pass the_engine in module->data
It was a confusing way of repurposing the field. My comment from over five years ago (129002fc0d) said that some external C modules might be relying on this. But that certainly sounds moot nowadays. To get more confidence, I rechecked all kr_module::data references (as found by libclang).
-rw-r--r--daemon/engine.c2
-rw-r--r--lib/module.c4
-rw-r--r--lib/module.h2
3 files changed, 2 insertions, 6 deletions
diff --git a/daemon/engine.c b/daemon/engine.c
index 509915df..a0da529b 100644
--- a/daemon/engine.c
+++ b/daemon/engine.c
@@ -741,8 +741,6 @@ int engine_register(const char *name, const char *precedence, const char* ref)
if (!module) {
return kr_error(ENOMEM);
}
- module->data = the_engine; /*< some outside modules may still use this value */
-
int ret = kr_module_load(module, name, LIBDIR "/kres_modules");
if (ret == 0) {
/* We have a C module, loaded and init() was called.
diff --git a/lib/module.c b/lib/module.c
index 2427c7b6..df9a1f5e 100644
--- a/lib/module.c
+++ b/lib/module.c
@@ -103,10 +103,8 @@ int kr_module_load(struct kr_module *module, const char *name, const char *path)
return kr_error(EINVAL);
}
- /* Initialize, keep userdata */
- void *data = module->data;
+ /* Initialize */
memset(module, 0, sizeof(struct kr_module));
- module->data = data;
module->name = strdup(name);
if (module->name == NULL) {
return kr_error(ENOMEM);
diff --git a/lib/module.h b/lib/module.h
index 507b2df1..4dd5a490 100644
--- a/lib/module.h
+++ b/lib/module.h
@@ -86,7 +86,7 @@ struct kr_prop {
/**
* Load a C module instance into memory. And call its init().
*
- * @param module module structure. Will be overwritten except for ->data on success.
+ * @param module module structure. Will be overwritten.
* @param name module name
* @param path module search path
* @return 0 or an error