diff options
Diffstat (limited to 'kernel/module.c')
| -rw-r--r-- | kernel/module.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/kernel/module.c b/kernel/module.c index 206915830d29..dc582749fa13 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -136,6 +136,7 @@ static int param_set_bool_enable_only(const char *val, } static const struct kernel_param_ops param_ops_bool_enable_only = { + .flags = KERNEL_PARAM_FL_NOARG, .set = param_set_bool_enable_only, .get = param_get_bool, }; @@ -603,7 +604,7 @@ static void setup_modinfo_##field(struct module *mod, const char *s) \ static ssize_t show_modinfo_##field(struct module_attribute *mattr, \ struct module_kobject *mk, char *buffer) \ { \ - return sprintf(buffer, "%s\n", mk->mod->field); \ + return scnprintf(buffer, PAGE_SIZE, "%s\n", mk->mod->field); \ } \ static int modinfo_##field##_exists(struct module *mod) \ { \ @@ -1611,6 +1612,14 @@ static void module_remove_modinfo_attrs(struct module *mod) kfree(mod->modinfo_attrs); } +static void mod_kobject_put(struct module *mod) +{ + DECLARE_COMPLETION_ONSTACK(c); + mod->mkobj.kobj_completion = &c; + kobject_put(&mod->mkobj.kobj); + wait_for_completion(&c); +} + static int mod_sysfs_init(struct module *mod) { int err; @@ -1638,7 +1647,7 @@ static int mod_sysfs_init(struct module *mod) err = kobject_init_and_add(&mod->mkobj.kobj, &module_ktype, NULL, "%s", mod->name); if (err) - kobject_put(&mod->mkobj.kobj); + mod_kobject_put(mod); /* delay uevent until full sysfs population */ out: @@ -1682,7 +1691,7 @@ out_unreg_param: out_unreg_holders: kobject_put(mod->holders_dir); out_unreg: - kobject_put(&mod->mkobj.kobj); + mod_kobject_put(mod); out: return err; } @@ -1691,7 +1700,7 @@ static void mod_sysfs_fini(struct module *mod) { remove_notes_attrs(mod); remove_sect_attrs(mod); - kobject_put(&mod->mkobj.kobj); + mod_kobject_put(mod); } #else /* !CONFIG_SYSFS */ @@ -2540,21 +2549,20 @@ static int copy_module_from_user(const void __user *umod, unsigned long len, /* Sets info->hdr and info->len. */ static int copy_module_from_fd(int fd, struct load_info *info) { - struct file *file; + struct fd f = fdget(fd); int err; struct kstat stat; loff_t pos; ssize_t bytes = 0; - file = fget(fd); - if (!file) + if (!f.file) return -ENOEXEC; - err = security_kernel_module_from_file(file); + err = security_kernel_module_from_file(f.file); if (err) goto out; - err = vfs_getattr(&file->f_path, &stat); + err = vfs_getattr(&f.file->f_path, &stat); if (err) goto out; @@ -2577,7 +2585,7 @@ static int copy_module_from_fd(int fd, struct load_info *info) pos = 0; while (pos < stat.size) { - bytes = kernel_read(file, pos, (char *)(info->hdr) + pos, + bytes = kernel_read(f.file, pos, (char *)(info->hdr) + pos, stat.size - pos); if (bytes < 0) { vfree(info->hdr); @@ -2591,7 +2599,7 @@ static int copy_module_from_fd(int fd, struct load_info *info) info->len = pos; out: - fput(file); + fdput(f); return err; } |