linux-kernel - [PATCH v4 01/11] sysfs: create bin_attributes under the requested group

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Date:	Wed,  5 Mar 2014 16:01:00 -0800
From:	Cody P Schafer <cody@...ux.vnet.ibm.com>
To:	Linux PPC <linuxppc-dev@...ts.ozlabs.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Ingo Molnar <mingo@...hat.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Michael Ellerman <michael@...erman.id.au>,
	scottwood@...escale.com, Peter Zijlstra <peterz@...radead.org>,
	Cody P Schafer <cody@...ux.vnet.ibm.com>
Subject: [PATCH v4 01/11] sysfs: create bin_attributes under the requested group

bin_attributes created/updated in create_files() (such as those listed
via (struct device).attribute_groups) were not placed under the
specified group, and instead appeared in the base kobj directory.

Fix this by making bin_attributes use creating code similar to normal
attributes.

A quick grep shows that no one is using bin_attrs in a named attribute
group yet, so we can do this without breaking anything in usespace.

Note that I do not add is_visible() support to
bin_attributes, though that could be done as well.

Signed-off-by: Cody P Schafer <cody@...ux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---

 Currently in:
 git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git driver-core-next
 with commit-id: aabaf4c2050d21d39fe11eec889c508e84d6a328

---

 fs/sysfs/group.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index 6b57938..aa04068 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -70,8 +70,11 @@ static int create_files(struct kernfs_node *parent, struct kobject *kobj,
 	if (grp->bin_attrs) {
 		for (bin_attr = grp->bin_attrs; *bin_attr; bin_attr++) {
 			if (update)
-				sysfs_remove_bin_file(kobj, *bin_attr);
-			error = sysfs_create_bin_file(kobj, *bin_attr);
+				kernfs_remove_by_name(parent,
+						(*bin_attr)->attr.name);
+			error = sysfs_add_file_mode_ns(parent,
+					&(*bin_attr)->attr, true,
+					(*bin_attr)->attr.mode, NULL);
 			if (error)
 				break;
 		}
-- 
1.9.0

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