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Date: Fri, 12 Nov 2010 19:18:38 +0100
From: Stefan Achatz <stefan_achatz@....de>
To: Greg Kroah-Hartman <gregkh@...e.de>,
"Eric W. Biederman" <ebiederm@...stanetworks.com>,
"Serge E. Hallyn" <serue@...ibm.com>, Tejun Heo <tj@...nel.org>,
Jiri Kosina <jkosina@...e.cz>, linux-input@...r.kernel.org,
linux-kernel@...r.kernel.org,
Dmitry Torokhov <dmitry.torokhov@...il.com>,
Benjamin Thery <benjamin.thery@...l.net>
Subject: [PATCH 1/2] sysfs: Introducing sysfs_create_bin_group()
Implemented group functions for easier creation of multiple binary sysfs
attributes similar to existing attribute_group handling functions.
The code reuses struct attribute_group instead of inventing a new struct
binary_attribute_group.
Signed-off-by: Stefan Achatz <erazor_de@...rs.sourceforge.net>
---
fs/sysfs/group.c | 76 ++++++++++++++++++++++++++++++++++++------------
include/linux/sysfs.h | 11 +++++++
2 files changed, 68 insertions(+), 19 deletions(-)
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index 442f34f..841baed 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -27,7 +27,7 @@ static void remove_files(struct sysfs_dirent *dir_sd, struct kobject *kobj,
}
static int create_files(struct sysfs_dirent *dir_sd, struct kobject *kobj,
- const struct attribute_group *grp, int update)
+ const struct attribute_group *grp, int update, int type)
{
struct attribute *const* attr;
int error = 0, i;
@@ -45,7 +45,7 @@ static int create_files(struct sysfs_dirent *dir_sd, struct kobject *kobj,
if (!mode)
continue;
}
- error = sysfs_add_file_mode(dir_sd, *attr, SYSFS_KOBJ_ATTR,
+ error = sysfs_add_file_mode(dir_sd, *attr, type,
(*attr)->mode | mode);
if (unlikely(error))
break;
@@ -57,7 +57,7 @@ static int create_files(struct sysfs_dirent *dir_sd, struct kobject *kobj,
static int internal_create_group(struct kobject *kobj, int update,
- const struct attribute_group *grp)
+ const struct attribute_group *grp, int type)
{
struct sysfs_dirent *sd;
int error;
@@ -75,7 +75,7 @@ static int internal_create_group(struct kobject *kobj, int update,
} else
sd = kobj->sd;
sysfs_get(sd);
- error = create_files(sd, kobj, grp, update);
+ error = create_files(sd, kobj, grp, update, type);
if (error) {
if (grp->name)
sysfs_remove_subdir(sd);
@@ -97,9 +97,16 @@ static int internal_create_group(struct kobject *kobj, int update,
int sysfs_create_group(struct kobject *kobj,
const struct attribute_group *grp)
{
- return internal_create_group(kobj, 0, grp);
+ return internal_create_group(kobj, 0, grp, SYSFS_KOBJ_ATTR);
}
+int sysfs_create_bin_group(struct kobject *kobj,
+ const struct attribute_group *grp)
+{
+ return internal_create_group(kobj, 0, grp, SYSFS_KOBJ_BIN_ATTR);
+}
+EXPORT_SYMBOL_GPL(sysfs_create_bin_group);
+
/**
* sysfs_update_group - given a directory kobject, create an attribute group
* @kobj: The kobject to create the group on
@@ -120,10 +127,15 @@ int sysfs_create_group(struct kobject *kobj,
int sysfs_update_group(struct kobject *kobj,
const struct attribute_group *grp)
{
- return internal_create_group(kobj, 1, grp);
+ return internal_create_group(kobj, 1, grp, SYSFS_KOBJ_ATTR);
}
-
+int sysfs_update_bin_group(struct kobject *kobj,
+ const struct attribute_group *grp)
+{
+ return internal_create_group(kobj, 1, grp, SYSFS_KOBJ_BIN_ATTR);
+}
+EXPORT_SYMBOL_GPL(sysfs_update_bin_group);
void sysfs_remove_group(struct kobject * kobj,
const struct attribute_group * grp)
@@ -148,17 +160,15 @@ void sysfs_remove_group(struct kobject * kobj,
sysfs_put(sd);
}
-/**
- * sysfs_merge_group - merge files into a pre-existing attribute group.
- * @kobj: The kobject containing the group.
- * @grp: The files to create and the attribute group they belong to.
- *
- * This function returns an error if the group doesn't exist or any of the
- * files already exist in that group, in which case none of the new files
- * are created.
- */
-int sysfs_merge_group(struct kobject *kobj,
- const struct attribute_group *grp)
+void sysfs_remove_bin_group(struct kobject * kobj,
+ const struct attribute_group * grp)
+{
+ sysfs_remove_group(kobj, grp);
+}
+EXPORT_SYMBOL_GPL(sysfs_remove_bin_group);
+
+int internal_merge_group(struct kobject *kobj,
+ const struct attribute_group *grp, int type)
{
struct sysfs_dirent *dir_sd;
int error = 0;
@@ -173,7 +183,7 @@ int sysfs_merge_group(struct kobject *kobj,
return -ENOENT;
for ((i = 0, attr = grp->attrs); *attr && !error; (++i, ++attr))
- error = sysfs_add_file(dir_sd, *attr, SYSFS_KOBJ_ATTR);
+ error = sysfs_add_file(dir_sd, *attr, type);
if (error) {
while (--i >= 0)
sysfs_hash_and_remove(dir_sd, NULL, (*--attr)->name);
@@ -182,8 +192,30 @@ int sysfs_merge_group(struct kobject *kobj,
return error;
}
+
+/**
+ * sysfs_merge_group - merge files into a pre-existing attribute group.
+ * @kobj: The kobject containing the group.
+ * @grp: The files to create and the attribute group they belong to.
+ *
+ * This function returns an error if the group doesn't exist or any of the
+ * files already exist in that group, in which case none of the new files
+ * are created.
+ */
+int sysfs_merge_group(struct kobject *kobj,
+ const struct attribute_group *grp)
+{
+ return internal_merge_group(kobj, grp, SYSFS_KOBJ_ATTR);
+}
EXPORT_SYMBOL_GPL(sysfs_merge_group);
+int sysfs_merge_bin_group(struct kobject *kobj,
+ const struct attribute_group *grp)
+{
+ return internal_merge_group(kobj, grp, SYSFS_KOBJ_BIN_ATTR);
+}
+EXPORT_SYMBOL_GPL(sysfs_merge_bin_group);
+
/**
* sysfs_unmerge_group - remove files from a pre-existing attribute group.
* @kobj: The kobject containing the group.
@@ -207,6 +239,12 @@ void sysfs_unmerge_group(struct kobject *kobj,
}
EXPORT_SYMBOL_GPL(sysfs_unmerge_group);
+void sysfs_unmerge_bin_group(struct kobject *kobj,
+ const struct attribute_group *grp)
+{
+ sysfs_unmerge_group(kobj, grp);
+}
+EXPORT_SYMBOL_GPL(sysfs_unmerge_bin_group);
EXPORT_SYMBOL_GPL(sysfs_create_group);
EXPORT_SYMBOL_GPL(sysfs_update_group);
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index 30b8815..653b0b0 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -169,6 +169,17 @@ int sysfs_merge_group(struct kobject *kobj,
void sysfs_unmerge_group(struct kobject *kobj,
const struct attribute_group *grp);
+int sysfs_create_bin_group(struct kobject *kobj,
+ const struct attribute_group *grp);
+int sysfs_update_bin_group(struct kobject *kobj,
+ const struct attribute_group *grp);
+void sysfs_remove_bin_group(struct kobject * kobj,
+ const struct attribute_group * grp);
+int sysfs_merge_bin_group(struct kobject *kobj,
+ const struct attribute_group *grp);
+void sysfs_unmerge_bin_group(struct kobject *kobj,
+ const struct attribute_group *grp);
+
void sysfs_notify(struct kobject *kobj, const char *dir, const char *attr);
void sysfs_notify_dirent(struct sysfs_dirent *sd);
struct sysfs_dirent *sysfs_get_dirent(struct sysfs_dirent *parent_sd,
--
1.7.2.3
--
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