[PATCH] avoid problems with kobject_set_name and name with %

[PATCH] avoid problems with kobject_set_name and name with %

[Stephen Hemminger]

kobject_set_name takes a printf style argument list. There are many
callers that pass only one string, if this string contained a '%' character
than bad things would happen.  The fix is simple.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>

diff -Nru a/drivers/base/bus.c b/drivers/base/bus.c
--- a/drivers/base/bus.c	2004-10-08 11:32:52 -07:00
+++ b/drivers/base/bus.c	2004-10-08 11:32:52 -07:00
@@ -515,7 +515,7 @@
 
 	if (bus) {
 		pr_debug("bus %s: add driver %s\n", bus->name, drv->name);
-		error = kobject_set_name(&drv->kobj, drv->name);
+		error = kobject_set_name(&drv->kobj, "%s", drv->name);
 		if (error) {
 			put_bus(bus);
 			return error;
@@ -664,7 +664,7 @@
 {
 	int retval;
 
-	retval = kobject_set_name(&bus->subsys.kset.kobj, bus->name);
+	retval = kobject_set_name(&bus->subsys.kset.kobj, "%s", bus->name);
 	if (retval)
 		goto out;
 
diff -Nru a/drivers/base/class.c b/drivers/base/class.c
--- a/drivers/base/class.c	2004-10-08 11:32:52 -07:00
+++ b/drivers/base/class.c	2004-10-08 11:32:52 -07:00
@@ -139,7 +139,7 @@
 
 	INIT_LIST_HEAD(&cls->children);
 	INIT_LIST_HEAD(&cls->interfaces);
-	error = kobject_set_name(&cls->subsys.kset.kobj, cls->name);
+	error = kobject_set_name(&cls->subsys.kset.kobj, "%s", cls->name);
 	if (error)
 		return error;
 
@@ -368,7 +368,7 @@
 		 class_dev->class_id);
 
 	/* first, register with generic layer. */
-	kobject_set_name(&class_dev->kobj, class_dev->class_id);
+	kobject_set_name(&class_dev->kobj, "%s", class_dev->class_id);
 	if (parent)
 		class_dev->kobj.parent = &parent->subsys.kset.kobj;
 
diff -Nru a/drivers/base/core.c b/drivers/base/core.c
--- a/drivers/base/core.c	2004-10-08 11:32:52 -07:00
+++ b/drivers/base/core.c	2004-10-08 11:32:52 -07:00
@@ -221,7 +221,7 @@
 	pr_debug("DEV: registering device: ID = '%s'\n", dev->bus_id);
 
 	/* first, register with generic layer. */
-	kobject_set_name(&dev->kobj, dev->bus_id);
+	kobject_set_name(&dev->kobj, "%s", dev->bus_id);
 	if (parent)
 		dev->kobj.parent = &parent->kobj;
 
diff -Nru a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
--- a/drivers/firmware/efivars.c	2004-10-08 11:32:52 -07:00
+++ b/drivers/firmware/efivars.c	2004-10-08 11:32:52 -07:00
@@ -640,7 +640,7 @@
 	*(short_name + strlen(short_name)) = '-';
 	efi_guid_unparse(vendor_guid, short_name + strlen(short_name));
 
-	kobject_set_name(&new_efivar->kobj, short_name);
+	kobject_set_name(&new_efivar->kobj, "%s", short_name);
 	kobj_set_kset_s(new_efivar, vars_subsys);
 	kobject_register(&new_efivar->kobj);
 
diff -Nru a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c
--- a/drivers/pci/hotplug/pci_hotplug_core.c	2004-10-08 11:32:52 -07:00
+++ b/drivers/pci/hotplug/pci_hotplug_core.c	2004-10-08 11:32:52 -07:00
@@ -568,7 +568,7 @@
 	if ((slot->info == NULL) || (slot->ops == NULL))
 		return -EINVAL;
 
-	kobject_set_name(&slot->kobj, slot->name);
+	kobject_set_name(&slot->kobj, "%s", slot->name);
 	kobj_set_kset_s(slot, pci_hotplug_slots_subsys);
 
 	/* this can fail if we have already registered a slot with the same name */
diff -Nru a/fs/sysfs/dir.c b/fs/sysfs/dir.c
--- a/fs/sysfs/dir.c	2004-10-08 11:32:52 -07:00
+++ b/fs/sysfs/dir.c	2004-10-08 11:32:52 -07:00
@@ -181,7 +181,7 @@
 	new_dentry = sysfs_get_dentry(parent, new_name);
 	if (!IS_ERR(new_dentry)) {
   		if (!new_dentry->d_inode) {
-			error = kobject_set_name(kobj,new_name);
+			error = kobject_set_name(kobj, "%s", new_name);
 			if (!error)
 				d_move(kobj->dentry, new_dentry);
 		}
diff -Nru a/kernel/module.c b/kernel/module.c
--- a/kernel/module.c	2004-10-08 11:32:52 -07:00
+++ b/kernel/module.c	2004-10-08 11:32:52 -07:00
@@ -1119,7 +1119,7 @@
 		return -ENOMEM;
 
 	memset(&mod->mkobj->kobj, 0, sizeof(mod->mkobj->kobj));
-	err = kobject_set_name(&mod->mkobj->kobj, mod->name);
+	err = kobject_set_name(&mod->mkobj->kobj, "%s", mod->name);
 	if (err)
 		goto out;
 	kobj_set_kset_s(mod->mkobj, module_subsys);

Re: [PATCH] avoid problems with kobject_set_name and name with %

[Greg KH]

On Fri, Oct 08, 2004 at 11:33:33AM -0700, Stephen Hemminger wrote:
> kobject_set_name takes a printf style argument list. There are many
> callers that pass only one string, if this string contained a '%' character
> than bad things would happen.  The fix is simple.
> 
> Signed-off-by: Stephen Hemminger <shemminger@osdl.org>

Applied, thanks.

greg k-h