diff options
Diffstat (limited to 'fs/sysfs/file.c')
| -rw-r--r-- | fs/sysfs/file.c | 44 |
1 files changed, 44 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); |