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Ziviani" To: qemu-devel@nongnu.org Subject: [RFC 2/3] modules: Implement module_is_loaded function Date: Wed, 30 Jun 2021 20:27:48 -0300 Message-Id: <20210630232749.21873-3-jziviani@suse.de> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210630232749.21873-1-jziviani@suse.de> References: <20210630232749.21873-1-jziviani@suse.de> MIME-Version: 1.0 Received-SPF: pass client-ip=195.135.220.28; envelope-from=jziviani@suse.de; helo=smtp-out1.suse.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: berrange@redhat.com, ehabkost@redhat.com, "Jose R. Ziviani" , kraxel@redhat.com, pbonzini@redhat.com, cfontana@suse.de Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The function module_load_one() fills a hash table will all modules that were successfuly loaded. However, that table is a static variable of module_load_one(). This patch changes it and creates a function that informs whether a given module was loaded or not. Signed-off-by: Jose R. Ziviani --- include/qemu/module.h | 3 +++ util/module.c | 28 +++++++++++++++++++++------- 2 files changed, 24 insertions(+), 7 deletions(-) diff --git a/include/qemu/module.h b/include/qemu/module.h index 456e190a55..01779cc7fb 100644 --- a/include/qemu/module.h +++ b/include/qemu/module.h @@ -14,6 +14,7 @@ #ifndef QEMU_MODULE_H #define QEMU_MODULE_H +#include #define DSO_STAMP_FUN glue(qemu_stamp, CONFIG_STAMP) #define DSO_STAMP_FUN_STR stringify(DSO_STAMP_FUN) @@ -74,6 +75,8 @@ void module_load_qom_one(const char *type); void module_load_qom_all(void); void module_allow_arch(const char *arch); +bool module_is_loaded(const char *name); + /** * DOC: module info annotation macros * diff --git a/util/module.c b/util/module.c index 6bb4ad915a..64307b7a25 100644 --- a/util/module.c +++ b/util/module.c @@ -119,6 +119,8 @@ static const QemuModinfo module_info_stub[] = { { static const QemuModinfo *module_info = module_info_stub; static const char *module_arch; +static GHashTable *loaded_modules; + void module_init_info(const QemuModinfo *info) { module_info = info; @@ -206,13 +208,10 @@ static int module_load_file(const char *fname, bool mayfail, bool export_symbols out: return ret; } -#endif bool module_load_one(const char *prefix, const char *lib_name, bool mayfail) { bool success = false; - -#ifdef CONFIG_MODULES char *fname = NULL; #ifdef CONFIG_MODULE_UPGRADES char *version_dir; @@ -223,7 +222,6 @@ bool module_load_one(const char *prefix, const char *lib_name, bool mayfail) int i = 0, n_dirs = 0; int ret; bool export_symbols = false; - static GHashTable *loaded_modules; const QemuModinfo *modinfo; const char **sl; @@ -307,12 +305,9 @@ bool module_load_one(const char *prefix, const char *lib_name, bool mayfail) g_free(dirs[i]); } -#endif return success; } -#ifdef CONFIG_MODULES - static bool module_loaded_qom_all; void module_load_qom_one(const char *type) @@ -377,6 +372,15 @@ void qemu_load_module_for_opts(const char *group) } } +bool module_is_loaded(const char *name) +{ + if (!loaded_modules || !g_hash_table_contains(loaded_modules, name)) { + return false; + } + + return true; +} + #else void module_allow_arch(const char *arch) {} @@ -384,4 +388,14 @@ void qemu_load_module_for_opts(const char *group) {} void module_load_qom_one(const char *type) {} void module_load_qom_all(void) {} +bool module_load_one(const char *prefix, const char *lib_name, bool mayfail) +{ + return false; +} + +bool module_is_loaded(const char *name) +{ + return false; +} + #endif