fuse: support ioctl on directories
Multiplexing filesystems may want to support ioctls on the underlying
files and directores (e.g. FS_IOC_{GET,SET}FLAGS).
Ioctl support on directories was missing so add it now.
Reported-by: Antonio SJ Musumeci <bile@landofbile.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 9f63e49..3445779 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1182,6 +1182,30 @@
return fuse_fsync_common(file, start, end, datasync, 1);
}
+static long fuse_dir_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ struct fuse_conn *fc = get_fuse_conn(file->f_mapping->host);
+
+ /* FUSE_IOCTL_DIR only supported for API version >= 7.18 */
+ if (fc->minor < 18)
+ return -ENOTTY;
+
+ return fuse_ioctl_common(file, cmd, arg, FUSE_IOCTL_DIR);
+}
+
+static long fuse_dir_compat_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ struct fuse_conn *fc = get_fuse_conn(file->f_mapping->host);
+
+ if (fc->minor < 18)
+ return -ENOTTY;
+
+ return fuse_ioctl_common(file, cmd, arg,
+ FUSE_IOCTL_COMPAT | FUSE_IOCTL_DIR);
+}
+
static bool update_mtime(unsigned ivalid)
{
/* Always update if mtime is explicitly set */
@@ -1596,6 +1620,8 @@
.open = fuse_dir_open,
.release = fuse_dir_release,
.fsync = fuse_dir_fsync,
+ .unlocked_ioctl = fuse_dir_ioctl,
+ .compat_ioctl = fuse_dir_compat_ioctl,
};
static const struct inode_operations fuse_common_inode_operations = {
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index c297425..4a199fd 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1926,8 +1926,8 @@
}
EXPORT_SYMBOL_GPL(fuse_do_ioctl);
-static long fuse_file_ioctl_common(struct file *file, unsigned int cmd,
- unsigned long arg, unsigned int flags)
+long fuse_ioctl_common(struct file *file, unsigned int cmd,
+ unsigned long arg, unsigned int flags)
{
struct inode *inode = file->f_dentry->d_inode;
struct fuse_conn *fc = get_fuse_conn(inode);
@@ -1944,13 +1944,13 @@
static long fuse_file_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
- return fuse_file_ioctl_common(file, cmd, arg, 0);
+ return fuse_ioctl_common(file, cmd, arg, 0);
}
static long fuse_file_compat_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
- return fuse_file_ioctl_common(file, cmd, arg, FUSE_IOCTL_COMPAT);
+ return fuse_ioctl_common(file, cmd, arg, FUSE_IOCTL_COMPAT);
}
/*
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index cf6db0a..09337bc 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -765,6 +765,8 @@
size_t count, loff_t *ppos, int write);
long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
unsigned int flags);
+long fuse_ioctl_common(struct file *file, unsigned int cmd,
+ unsigned long arg, unsigned int flags);
unsigned fuse_file_poll(struct file *file, poll_table *wait);
int fuse_dev_release(struct inode *inode, struct file *file);