diff options
| -rw-r--r-- | fs/sysfs/file.c | 44 | ||||
| -rw-r--r-- | include/linux/sysfs.h | 17 |
2 files changed, 61 insertions, 0 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index 98b0910ad80c..8d4d839a9d88 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -502,6 +502,30 @@ int sysfs_create_file(struct kobject * kobj, const struct attribute * attr) /** + * sysfs_add_file_to_group - add an attribute file to a pre-existing group. + * @kobj: object we're acting for. + * @attr: attribute descriptor. + * @group: group name. + */ +int sysfs_add_file_to_group(struct kobject *kobj, + const struct attribute *attr, const char *group) +{ + struct dentry *dir; + int error; + + dir = lookup_one_len(group, kobj->dentry, strlen(group)); + if (IS_ERR(dir)) + error = PTR_ERR(dir); + else { + error = sysfs_add_file(dir, attr, SYSFS_KOBJ_ATTR); + dput(dir); + } + return error; +} +EXPORT_SYMBOL_GPL(sysfs_add_file_to_group); + + +/** * sysfs_update_file - update the modified timestamp on an object attribute. * @kobj: object we're acting for. * @attr: attribute descriptor. @@ -586,6 +610,26 @@ void sysfs_remove_file(struct kobject * kobj, const struct attribute * attr) } +/** + * sysfs_remove_file_from_group - remove an attribute file from a group. + * @kobj: object we're acting for. + * @attr: attribute descriptor. + * @group: group name. + */ +void sysfs_remove_file_from_group(struct kobject *kobj, + const struct attribute *attr, const char *group) +{ + struct dentry *dir; + + dir = lookup_one_len(group, kobj->dentry, strlen(group)); + if (!IS_ERR(dir)) { + sysfs_hash_and_remove(dir, attr->name); + dput(dir); + } +} +EXPORT_SYMBOL_GPL(sysfs_remove_file_from_group); + + EXPORT_SYMBOL_GPL(sysfs_create_file); EXPORT_SYMBOL_GPL(sysfs_remove_file); EXPORT_SYMBOL_GPL(sysfs_update_file); diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h index 192de3afa96b..f45450b295c0 100644 --- a/include/linux/sysfs.h +++ b/include/linux/sysfs.h @@ -126,6 +126,11 @@ void sysfs_remove_bin_file(struct kobject *kobj, struct bin_attribute *attr); int __must_check sysfs_create_group(struct kobject *, const struct attribute_group *); void sysfs_remove_group(struct kobject *, const struct attribute_group *); +int sysfs_add_file_to_group(struct kobject *kobj, + const struct attribute *attr, const char *group); +void sysfs_remove_file_from_group(struct kobject *kobj, + const struct attribute *attr, const char *group); + void sysfs_notify(struct kobject * k, char *dir, char *attr); @@ -210,6 +215,18 @@ static inline void sysfs_remove_group(struct kobject * k, const struct attribute ; } +static inline int sysfs_add_file_to_group(struct kobject *kobj, + const struct attribute *attr, const char *group) +{ + return 0; +} + +static inline void sysfs_remove_file_from_group(struct kobject *kobj, + const struct attribute *attr, const char *group); +{ + ; +} + static inline void sysfs_notify(struct kobject * k, char *dir, char *attr) { } |