module: show version information for built-in modules in sysfs

[cascardo/linux.git] / include / linux / module.h

diff --git a/include/linux/module.h b/include/linux/module.h
index 8b17fd8..50efcd3 100644 (file)
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -58,6 +58,12 @@ struct module_attribute {
        void (*free)(struct module *);
 };
 
+struct module_version_attribute {
+       struct module_attribute mattr;
+       const char *module_name;
+       const char *version;
+};
+
 struct module_kobject
 {
        struct kobject kobj;
@@ -161,7 +167,28 @@ extern struct module __this_module;
   Using this automatically adds a checksum of the .c files and the
   local headers in "srcversion".
 */
+
+#ifdef MODULE
 #define MODULE_VERSION(_version) MODULE_INFO(version, _version)
+#else
+#define MODULE_VERSION(_version)                                       \
+       extern ssize_t __modver_version_show(struct module_attribute *, \
+                                            struct module *, char *);  \
+       static struct module_version_attribute __modver_version_attr    \
+       __used                                                          \
+    __attribute__ ((__section__ ("__modver"),aligned(sizeof(void *)))) \
+       = {                                                             \
+               .mattr  = {                                             \
+                       .attr   = {                                     \
+                               .name   = "version",                    \
+                               .mode   = S_IRUGO,                      \
+                       },                                              \
+                       .show   = __modver_version_show,                \
+               },                                                      \
+               .module_name    = KBUILD_MODNAME,                       \
+               .version        = _version,                             \
+       }
+#endif
 
 /* Optional firmware file (or files) needed by the module
  * format is simply firmware file name.  Multiple firmware