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Date: Sat, 07 Jan 2012 16:44:36 +0100
From: Kay Sievers <kay.sievers@...y.org>
To: Rusty Russell <rusty@...tcorp.com.au>
Cc: linux-kernel@...r.kernel.org,
Lucas De Marchi <lucas.demarchi@...fusion.mobi>
Subject: [PATCH] modules: sysfs - export: taint, address, size
From: Kay Sievers <kay.sievers@...y.org>
Subject: modules: sysfs - export taint, address, size
Recent tools do not use /proc to retrieve module information. A few values
are currently missing from sysfs.
Cc: Lucas De Marchi <lucas.demarchi@...fusion.mobi>
Signed-off-by: Kay Sievers <kay.sievers@...y.org>
---
kernel/module.c | 89 +++++++++++++++++++++++++++++++++++++++-----------------
1 file changed, 62 insertions(+), 27 deletions(-)
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -849,6 +849,26 @@ out:
return ret;
}
+static size_t module_flags_taint(struct module *mod, char *buf)
+{
+ size_t l = 0;
+
+ if (mod->taints & (1 << TAINT_PROPRIETARY_MODULE))
+ buf[l++] = 'P';
+ else if (mod->taints & (1 << TAINT_OOT_MODULE))
+ buf[l++] = 'O';
+ if (mod->taints & (1 << TAINT_FORCED_MODULE))
+ buf[l++] = 'F';
+ if (mod->taints & (1 << TAINT_CRAP))
+ buf[l++] = 'C';
+ /*
+ * TAINT_FORCED_RMMOD: could be added.
+ * TAINT_UNSAFE_SMP, TAINT_MACHINE_CHECK, TAINT_BAD_PAGE don't
+ * apply to modules.
+ */
+ return l;
+}
+
static inline void print_unload_info(struct seq_file *m, struct module *mod)
{
struct module_use *use;
@@ -907,10 +927,8 @@ static ssize_t show_refcnt(struct module
return sprintf(buffer, "%u\n", module_refcount(mk->mod));
}
-static struct module_attribute refcnt = {
- .attr = { .name = "refcnt", .mode = 0444 },
- .show = show_refcnt,
-};
+static struct module_attribute refcnt =
+ __ATTR(refcnt, 0444, show_refcnt, NULL);
void module_put(struct module *module)
{
@@ -970,10 +988,8 @@ static ssize_t show_initstate(struct mod
return sprintf(buffer, "%s\n", state);
}
-static struct module_attribute initstate = {
- .attr = { .name = "initstate", .mode = 0444 },
- .show = show_initstate,
-};
+static struct module_attribute module_initstate =
+ __ATTR(initstate, 0444, show_initstate, NULL);
static ssize_t store_uevent(struct module_attribute *mattr,
struct module_kobject *mk,
@@ -986,16 +1002,48 @@ static ssize_t store_uevent(struct modul
return count;
}
-struct module_attribute module_uevent = {
- .attr = { .name = "uevent", .mode = 0200 },
- .store = store_uevent,
-};
+struct module_attribute module_uevent =
+ __ATTR(uevent, 0200, NULL, store_uevent);
+
+static ssize_t show_address(struct module_attribute *mattr,
+ struct module_kobject *mk, char *buffer)
+{
+ return sprintf(buffer, "0x%pK\n", mk->mod->module_core);
+}
+
+struct module_attribute module_address =
+ __ATTR(address, 0444, show_address, NULL);
+
+static ssize_t show_size(struct module_attribute *mattr,
+ struct module_kobject *mk, char *buffer)
+{
+ return sprintf(buffer, "%u\n", mk->mod->init_size + mk->mod->core_size);
+}
+
+struct module_attribute module_size =
+ __ATTR(size, 0444, show_size, NULL);
+
+static ssize_t show_taint(struct module_attribute *mattr,
+ struct module_kobject *mk, char *buffer)
+{
+ size_t l;
+
+ l = module_flags_taint(mk->mod, buffer);
+ buffer[l++] = '\n';
+ return l;
+}
+
+struct module_attribute module_taint =
+ __ATTR(taint, 0444, show_taint, NULL);
static struct module_attribute *modinfo_attrs[] = {
&modinfo_version,
&modinfo_srcversion,
- &initstate,
+ &module_initstate,
&module_uevent,
+ &module_address,
+ &module_size,
+ &module_taint,
#ifdef CONFIG_MODULE_UNLOAD
&refcnt,
#endif
@@ -3256,20 +3304,7 @@ static char *module_flags(struct module
mod->state == MODULE_STATE_GOING ||
mod->state == MODULE_STATE_COMING) {
buf[bx++] = '(';
- if (mod->taints & (1 << TAINT_PROPRIETARY_MODULE))
- buf[bx++] = 'P';
- else if (mod->taints & (1 << TAINT_OOT_MODULE))
- buf[bx++] = 'O';
- if (mod->taints & (1 << TAINT_FORCED_MODULE))
- buf[bx++] = 'F';
- if (mod->taints & (1 << TAINT_CRAP))
- buf[bx++] = 'C';
- /*
- * TAINT_FORCED_RMMOD: could be added.
- * TAINT_UNSAFE_SMP, TAINT_MACHINE_CHECK, TAINT_BAD_PAGE don't
- * apply to modules.
- */
-
+ bx += module_flags_taint(mod, buf + bx);
/* Show a - for module-is-being-unloaded */
if (mod->state == MODULE_STATE_GOING)
buf[bx++] = '-';
--
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