diff options
Diffstat (limited to 'kernel/kmod.c')
| -rw-r--r-- | kernel/kmod.c | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/kernel/kmod.c b/kernel/kmod.c index f936108f296..796276141e5 100644 --- a/kernel/kmod.c +++ b/kernel/kmod.c @@ -36,8 +36,6 @@ #include <linux/resource.h> #include <asm/uaccess.h> -extern int delete_module(const char *name, unsigned int flags); - extern int max_threads; static struct workqueue_struct *khelper_wq; @@ -48,7 +46,6 @@ static struct workqueue_struct *khelper_wq; modprobe_path is set via /proc/sys. */ char modprobe_path[KMOD_PATH_LEN] = "/sbin/modprobe"; -static struct module_kobject kmod_mk; /** * request_module - try to load a kernel module @@ -78,11 +75,6 @@ int request_module(const char *fmt, ...) static atomic_t kmod_concurrent = ATOMIC_INIT(0); #define MAX_KMOD_CONCURRENT 50 /* Completely arbitrary value - KAO */ static int kmod_loop_msg; - char modalias[16 + MODULE_NAME_LEN] = "MODALIAS="; - char *uevent_envp[2] = { - modalias, - NULL - }; va_start(args, fmt); ret = vsnprintf(module_name, MODULE_NAME_LEN, fmt, args); @@ -90,12 +82,6 @@ int request_module(const char *fmt, ...) if (ret >= MODULE_NAME_LEN) return -ENAMETOOLONG; - strcpy(&modalias[strlen("MODALIAS=")], module_name); - kobject_uevent_env(&kmod_mk.kobj, KOBJ_CHANGE, uevent_envp); - - if (modprobe_path[0] == '\0') - goto out; - /* If modprobe needs a service that is in a module, we get a recursive * loop. Limit the number of running kmod threads to max_threads/2 or * MAX_KMOD_CONCURRENT, whichever is the smaller. A cleaner method @@ -122,115 +108,9 @@ int request_module(const char *fmt, ...) ret = call_usermodehelper(modprobe_path, argv, envp, 1); atomic_dec(&kmod_concurrent); -out: return ret; } EXPORT_SYMBOL(request_module); - -static ssize_t store_mod_request(struct module_attribute *mattr, - struct module *mod, - const char *buffer, size_t count) -{ - char name[MODULE_NAME_LEN]; - int ret; - - if (count < 1 || count+1 > MODULE_NAME_LEN) - return -EINVAL; - memcpy(name, buffer, count); - name[count] = '\0'; - if (name[count-1] == '\n') - name[count-1] = '\0'; - - ret = request_module(name); - if (ret < 0) - return ret; - return count; -} - -static struct module_attribute mod_request = { - .attr = { .name = "mod_request", .mode = S_IWUSR, .owner = THIS_MODULE }, - .store = store_mod_request, -}; - -#ifdef CONFIG_MODULE_UNLOAD -static ssize_t store_mod_unload(struct module_attribute *mattr, - struct module *mod, - const char *buffer, size_t count) -{ - char name[MODULE_NAME_LEN]; - int ret; - - if (count < 1 || count+1 > MODULE_NAME_LEN) - return -EINVAL; - memcpy(name, buffer, count); - name[count] = '\0'; - if (name[count-1] == '\n') - name[count-1] = '\0'; - - ret = delete_module(name, O_NONBLOCK); - if (ret < 0) - return ret; - return count; -} - -static struct module_attribute mod_unload = { - .attr = { .name = "mod_unload", .mode = S_IWUSR, .owner = THIS_MODULE }, - .store = store_mod_unload, -}; -#endif - -static ssize_t show_mod_request_helper(struct module_attribute *mattr, - struct module *mod, - char *buffer) -{ - return sprintf(buffer, "%s\n", modprobe_path); -} - -static ssize_t store_mod_request_helper(struct module_attribute *mattr, - struct module *mod, - const char *buffer, size_t count) -{ - if (count < 1 || count+1 > KMOD_PATH_LEN) - return -EINVAL; - memcpy(modprobe_path, buffer, count); - modprobe_path[count] = '\0'; - if (modprobe_path[count-1] == '\n') - modprobe_path[count-1] = '\0'; - return count; -} - -static struct module_attribute mod_request_helper = { - .attr = { - .name = "mod_request_helper", - .mode = S_IWUSR | S_IRUGO, - .owner = THIS_MODULE - }, - .show = show_mod_request_helper, - .store = store_mod_request_helper, -}; - -void __init kmod_sysfs_init(void) -{ - int ret; - - kmod_mk.mod = THIS_MODULE; - kobj_set_kset_s(&kmod_mk, module_subsys); - kobject_set_name(&kmod_mk.kobj, "kmod"); - kobject_init(&kmod_mk.kobj); - ret = kobject_add(&kmod_mk.kobj); - if (ret < 0) - goto out; - - ret = sysfs_create_file(&kmod_mk.kobj, &mod_request_helper.attr); - ret = sysfs_create_file(&kmod_mk.kobj, &mod_request.attr); -#ifdef CONFIG_MODULE_UNLOAD - ret = sysfs_create_file(&kmod_mk.kobj, &mod_unload.attr); -#endif - - kobject_uevent(&kmod_mk.kobj, KOBJ_ADD); -out: - return; -} #endif /* CONFIG_KMOD */ struct subprocess_info { |