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-rw-r--r--kernel/ksysfs.c82
1 files changed, 52 insertions, 30 deletions
diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c
index 65daa5373ca6..e53bc30e9ba5 100644
--- a/kernel/ksysfs.c
+++ b/kernel/ksysfs.c
@@ -17,30 +17,34 @@
#include <linux/sched.h>
#define KERNEL_ATTR_RO(_name) \
-static struct subsys_attribute _name##_attr = __ATTR_RO(_name)
+static struct kobj_attribute _name##_attr = __ATTR_RO(_name)
#define KERNEL_ATTR_RW(_name) \
-static struct subsys_attribute _name##_attr = \
+static struct kobj_attribute _name##_attr = \
__ATTR(_name, 0644, _name##_show, _name##_store)
#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
/* current uevent sequence number */
-static ssize_t uevent_seqnum_show(struct kset *kset, char *page)
+static ssize_t uevent_seqnum_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
{
- return sprintf(page, "%llu\n", (unsigned long long)uevent_seqnum);
+ return sprintf(buf, "%llu\n", (unsigned long long)uevent_seqnum);
}
KERNEL_ATTR_RO(uevent_seqnum);
/* uevent helper program, used during early boo */
-static ssize_t uevent_helper_show(struct kset *kset, char *page)
+static ssize_t uevent_helper_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
{
- return sprintf(page, "%s\n", uevent_helper);
+ return sprintf(buf, "%s\n", uevent_helper);
}
-static ssize_t uevent_helper_store(struct kset *kset, const char *page, size_t count)
+static ssize_t uevent_helper_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t count)
{
if (count+1 > UEVENT_HELPER_PATH_LEN)
return -ENOENT;
- memcpy(uevent_helper, page, count);
+ memcpy(uevent_helper, buf, count);
uevent_helper[count] = '\0';
if (count && uevent_helper[count-1] == '\n')
uevent_helper[count-1] = '\0';
@@ -50,21 +54,24 @@ KERNEL_ATTR_RW(uevent_helper);
#endif
#ifdef CONFIG_KEXEC
-static ssize_t kexec_loaded_show(struct kset *kset, char *page)
+static ssize_t kexec_loaded_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
{
- return sprintf(page, "%d\n", !!kexec_image);
+ return sprintf(buf, "%d\n", !!kexec_image);
}
KERNEL_ATTR_RO(kexec_loaded);
-static ssize_t kexec_crash_loaded_show(struct kset *kset, char *page)
+static ssize_t kexec_crash_loaded_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
{
- return sprintf(page, "%d\n", !!kexec_crash_image);
+ return sprintf(buf, "%d\n", !!kexec_crash_image);
}
KERNEL_ATTR_RO(kexec_crash_loaded);
-static ssize_t vmcoreinfo_show(struct kset *kset, char *page)
+static ssize_t vmcoreinfo_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
{
- return sprintf(page, "%lx %x\n",
+ return sprintf(buf, "%lx %x\n",
paddr_vmcoreinfo_note(),
(unsigned int)vmcoreinfo_max_size);
}
@@ -94,8 +101,8 @@ static struct bin_attribute notes_attr = {
.read = &notes_read,
};
-decl_subsys(kernel, NULL, NULL);
-EXPORT_SYMBOL_GPL(kernel_subsys);
+struct kobject *kernel_kobj;
+EXPORT_SYMBOL_GPL(kernel_kobj);
static struct attribute * kernel_attrs[] = {
#if defined(CONFIG_HOTPLUG) && defined(CONFIG_NET)
@@ -116,24 +123,39 @@ static struct attribute_group kernel_attr_group = {
static int __init ksysfs_init(void)
{
- int error = subsystem_register(&kernel_subsys);
- if (!error)
- error = sysfs_create_group(&kernel_subsys.kobj,
- &kernel_attr_group);
+ int error;
- if (!error && notes_size > 0) {
- notes_attr.size = notes_size;
- error = sysfs_create_bin_file(&kernel_subsys.kobj,
- &notes_attr);
+ kernel_kobj = kobject_create_and_add("kernel", NULL);
+ if (!kernel_kobj) {
+ error = -ENOMEM;
+ goto exit;
}
+ error = sysfs_create_group(kernel_kobj, &kernel_attr_group);
+ if (error)
+ goto kset_exit;
- /*
- * Create "/sys/kernel/uids" directory and corresponding root user's
- * directory under it.
- */
- if (!error)
- error = uids_kobject_init();
+ if (notes_size > 0) {
+ notes_attr.size = notes_size;
+ error = sysfs_create_bin_file(kernel_kobj, &notes_attr);
+ if (error)
+ goto group_exit;
+ }
+ /* create the /sys/kernel/uids/ directory */
+ error = uids_sysfs_init();
+ if (error)
+ goto notes_exit;
+
+ return 0;
+
+notes_exit:
+ if (notes_size > 0)
+ sysfs_remove_bin_file(kernel_kobj, &notes_attr);
+group_exit:
+ sysfs_remove_group(kernel_kobj, &kernel_attr_group);
+kset_exit:
+ kobject_put(kernel_kobj);
+exit:
return error;
}