diff options
Diffstat (limited to 'kernel/ksysfs.c')
| -rw-r--r-- | kernel/ksysfs.c | 82 |
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 = ¬es_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, - ¬es_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, ¬es_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, ¬es_attr); +group_exit: + sysfs_remove_group(kernel_kobj, &kernel_attr_group); +kset_exit: + kobject_put(kernel_kobj); +exit: return error; } |