1 files changed, 109 insertions, 0 deletions
diff --git a/src/kernel/xloop_main_rhel_9.0.h b/src/kernel/xloop_main_rhel_9.0.h
new file mode 100644
index 0000000..4126460
--- /dev/null
+++ b/src/kernel/xloop_main_rhel_9.0.h
@@ -0,0 +1,109 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * loop_main.h
+ *
+ * Written by Theodore Ts'o, 3/29/93.
+ *
+ * Copyright 1993 by Theodore Ts'o.  Redistribution of this file is
+ * permitted under the GNU General Public License.
+ */
+#ifndef _LINUX_XLOOP_H
+#define _LINUX_XLOOP_H
+
+#include <linux/bio.h>
+#include <linux/blkdev.h>
+#include <linux/blk-mq.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include "uapi_xloop.h"
+#ifdef CONFIG_DEBUG_FS
+#include <linux/debugfs.h>
+#endif
+
+#include "xloop_file_fmt.h"
+
+/* Possible states of device */
+enum {
+	Xlo_unbound,
+	Xlo_bound,
+	Xlo_rundown,
+	Xlo_deleting,
+};
+
+struct xloop_func_table;
+
+struct xloop_device {
+	int                     xlo_number;
+	atomic_t                xlo_refcnt;
+	loff_t                  xlo_offset;
+	loff_t                  xlo_sizelimit;
+	int                     xlo_flags;
+	int                     (*transfer)(struct xloop_device *xlo, int cmd, struct page *raw_page, unsigned raw_off, struct page *xloop_page, unsigned xloop_off, int size, sector_t real_block);
+	char                    xlo_file_name[XLO_NAME_SIZE];
+	char                    xlo_crypt_name[XLO_NAME_SIZE];
+	char                    xlo_encrypt_key[XLO_KEY_SIZE];
+	int                     xlo_encrypt_key_size;
+	struct xloop_func_table *xlo_encryption;
+	__u32                   xlo_init[2];
+	kuid_t                  xlo_key_owner;	/* Who set the key */
+	int                     (*ioctl)(struct xloop_device *xlo, int cmd, unsigned long arg);
+
+	struct xloop_file_fmt   *xlo_fmt;
+
+	struct file             *xlo_backing_file;
+	struct block_device     *xlo_device;
+	void                    *key_data;
+
+	gfp_t                   old_gfp_mask;
+
+	spinlock_t              xlo_lock;
+	int                     xlo_state;
+	spinlock_t              xlo_work_lock;
+	struct workqueue_struct *workqueue;
+	struct work_struct      rootcg_work;
+	struct list_head        rootcg_cmd_list;
+	struct list_head        idle_worker_list;
+	struct rb_root          worker_tree;
+	struct timer_list       timer;
+	bool                    use_dio;
+	bool                    sysfs_inited;
+
+	struct request_queue    *xlo_queue;
+	struct blk_mq_tag_set   tag_set;
+	struct gendisk          *xlo_disk;
+	struct mutex            xlo_mutex;
+	bool                    idr_visible;
+
+#ifdef CONFIG_DEBUG_FS
+	struct dentry           *xlo_dbgfs_dir;
+#endif
+};
+
+struct xloop_cmd {
+	struct list_head           list_entry;
+	bool                       use_aio;  /* use AIO interface to handle I/O */
+	atomic_t                   ref;  /* only for aio */
+	long                       ret;
+	struct kiocb               iocb;
+	struct bio_vec             *bvec;
+	struct cgroup_subsys_state *blkcg_css;
+	struct cgroup_subsys_state *memcg_css;
+};
+
+/* Support for loadable transfer modules */
+struct xloop_func_table {
+	int           number;  /* filter type */
+	int           (*transfer)(struct xloop_device *xlo, int cmd, struct page *raw_page, unsigned raw_off, struct page *xloop_page, unsigned xloop_off, int size, sector_t real_block);
+	int           (*init)(struct xloop_device *xlo, const struct xloop_info64 *info);
+	/* release is called from xloop_unregister_transfer or clr_fd */
+	int           (*release)(struct xloop_device *xlo);
+	int           (*ioctl)(struct xloop_device *xlo, int cmd, unsigned long arg);
+	struct module *owner;
+};
+
+extern inline struct device *xloop_device_to_dev(struct xloop_device *xlo);
+
+int xloop_register_transfer(struct xloop_func_table *funcs);
+int xloop_unregister_transfer(int number);
+
+#endif