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authorAlan Stern <stern@rowland.harvard.edu>2007-02-20 15:02:44 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2007-02-23 15:03:46 -0800
commitdfa87c824a9a5430008acd1ed2e8111ed164fcbe (patch)
tree1e25c9d6a00b409e3cd6a7d304fe2b98eb955309 /fs/sysfs
parentb5e795f8df42936590ba9c606edc715fe3593284 (diff)
sysfs: allow attributes to be added to groups
This patch (as860) adds two new sysfs routines: sysfs_add_file_to_group() and sysfs_remove_file_from_group(). A later patch adds code that uses the new routines. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Cc: Maneesh Soni <maneesh@in.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/sysfs')
-rw-r--r--fs/sysfs/file.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 98b0910ad80..8d4d839a9d8 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);