diff mbox series

[3/5] Export dev_item.type in sysfs /sys/fs/btrfs/<uuid>/devinfo/<devid>/type

Message ID 20210117185435.36263-4-kreijack@libero.it (mailing list archive)
State New, archived
Headers show
Series [1/5] Add an ioctl to set the device properties | expand

Commit Message

Goffredo Baroncelli Jan. 17, 2021, 6:54 p.m. UTC 
From: Goffredo Baroncelli <kreijack@inwind.it>

---
 fs/btrfs/sysfs.c | 11 +++++++++++
 1 file changed, 11 insertions(+)
diff mbox series

Patch

diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index 19b9fffa2c9c..594e8445fe21 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -1416,11 +1416,22 @@  static ssize_t btrfs_devinfo_writeable_show(struct kobject *kobj,
 }
 BTRFS_ATTR(devid, writeable, btrfs_devinfo_writeable_show);
 
+static ssize_t btrfs_devinfo_type_show(struct kobject *kobj,
+					    struct kobj_attribute *a, char *buf)
+{
+	struct btrfs_device *device = container_of(kobj, struct btrfs_device,
+						   devid_kobj);
+
+	return scnprintf(buf, PAGE_SIZE, "0x%08llx\n",device->type);
+}
+BTRFS_ATTR(devid, type, btrfs_devinfo_type_show);
+
 static struct attribute *devid_attrs[] = {
 	BTRFS_ATTR_PTR(devid, in_fs_metadata),
 	BTRFS_ATTR_PTR(devid, missing),
 	BTRFS_ATTR_PTR(devid, replace_target),
 	BTRFS_ATTR_PTR(devid, writeable),
+	BTRFS_ATTR_PTR(devid, type),
 	NULL
 };
 ATTRIBUTE_GROUPS(devid);