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-rw-r--r--fs/sysfs/file.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index a12ac0356c..6b7652fb80 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -167,6 +167,18 @@ static int sysfs_kf_bin_mmap(struct kernfs_open_file *of,
return battr->mmap(of->file, kobj, battr, vma);
}
+static loff_t sysfs_kf_bin_llseek(struct kernfs_open_file *of, loff_t offset,
+ int whence)
+{
+ struct bin_attribute *battr = of->kn->priv;
+ struct kobject *kobj = of->kn->parent->priv;
+
+ if (battr->llseek)
+ return battr->llseek(of->file, kobj, battr, offset, whence);
+ else
+ return generic_file_llseek(of->file, offset, whence);
+}
+
static int sysfs_kf_bin_open(struct kernfs_open_file *of)
{
struct bin_attribute *battr = of->kn->priv;
@@ -249,6 +261,7 @@ static const struct kernfs_ops sysfs_bin_kfops_mmap = {
.write = sysfs_kf_bin_write,
.mmap = sysfs_kf_bin_mmap,
.open = sysfs_kf_bin_open,
+ .llseek = sysfs_kf_bin_llseek,
};
int sysfs_add_file_mode_ns(struct kernfs_node *parent,