/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

#ifndef _UAPI_LINUX_EXT4_H
#define _UAPI_LINUX_EXT4_H
#include <linux/fiemap.h>
#include <linux/fs.h>
#include <linux/ioctl.h>
#include <linux/types.h>

/*
 * ext4-specific ioctl commands
 */
#define EXT4_IOC_GETVERSION             _IOR('f', 3, long)
#define EXT4_IOC_SETVERSION             _IOW('f', 4, long)
#define EXT4_IOC_GETVERSION_OLD         FS_IOC_GETVERSION
#define EXT4_IOC_SETVERSION_OLD         FS_IOC_SETVERSION
#define EXT4_IOC_GETRSVSZ               _IOR('f', 5, long)
#define EXT4_IOC_SETRSVSZ               _IOW('f', 6, long)
#define EXT4_IOC_GROUP_EXTEND           _IOW('f', 7, unsigned long)
#define EXT4_IOC_GROUP_ADD              _IOW('f', 8, struct ext4_new_group_input)
#define EXT4_IOC_MIGRATE                _IO('f', 9)
 /* note ioctl 10 reserved for an early version of the FIEMAP ioctl */
 /* note ioctl 11 reserved for filesystem-independent FIEMAP ioctl */
#define EXT4_IOC_ALLOC_DA_BLKS          _IO('f', 12)
#define EXT4_IOC_MOVE_EXT               _IOWR('f', 15, struct move_extent)
#define EXT4_IOC_RESIZE_FS              _IOW('f', 16, __u64)
#define EXT4_IOC_SWAP_BOOT              _IO('f', 17)
#define EXT4_IOC_PRECACHE_EXTENTS       _IO('f', 18)
/* ioctl codes 19--39 are reserved for fscrypt */
#define EXT4_IOC_CLEAR_ES_CACHE         _IO('f', 40)
#define EXT4_IOC_GETSTATE               _IOW('f', 41, __u32)
#define EXT4_IOC_GET_ES_CACHE           _IOWR('f', 42, struct fiemap)
#define EXT4_IOC_CHECKPOINT             _IOW('f', 43, __u32)
#define EXT4_IOC_GETFSUUID              _IOR('f', 44, struct fsuuid)
#define EXT4_IOC_SETFSUUID              _IOW('f', 44, struct fsuuid)
#define EXT4_IOC_GET_TUNE_SB_PARAM      _IOR('f', 45, struct ext4_tune_sb_params)
#define EXT4_IOC_SET_TUNE_SB_PARAM      _IOW('f', 46, struct ext4_tune_sb_params)

#define EXT4_IOC_SHUTDOWN _IOR('X', 125, __u32)

/*
 * ioctl commands in 32 bit emulation
 */
#define EXT4_IOC32_GETVERSION           _IOR('f', 3, int)
#define EXT4_IOC32_SETVERSION           _IOW('f', 4, int)
#define EXT4_IOC32_GETRSVSZ             _IOR('f', 5, int)
#define EXT4_IOC32_SETRSVSZ             _IOW('f', 6, int)
#define EXT4_IOC32_GROUP_EXTEND         _IOW('f', 7, unsigned int)
#define EXT4_IOC32_GROUP_ADD            _IOW('f', 8, struct compat_ext4_new_group_input)
#define EXT4_IOC32_GETVERSION_OLD       FS_IOC32_GETVERSION
#define EXT4_IOC32_SETVERSION_OLD       FS_IOC32_SETVERSION

/*
 * Flags returned by EXT4_IOC_GETSTATE
 *
 * We only expose to userspace a subset of the state flags in
 * i_state_flags
 */
#define EXT4_STATE_FLAG_EXT_PRECACHED   0x00000001
#define EXT4_STATE_FLAG_NEW             0x00000002
#define EXT4_STATE_FLAG_NEWENTRY        0x00000004
#define EXT4_STATE_FLAG_DA_ALLOC_CLOSE  0x00000008

/*
 * Flags for ioctl EXT4_IOC_CHECKPOINT
 */
#define EXT4_IOC_CHECKPOINT_FLAG_DISCARD        0x1
#define EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT        0x2
#define EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN        0x4
#define EXT4_IOC_CHECKPOINT_FLAG_VALID          (EXT4_IOC_CHECKPOINT_FLAG_DISCARD | \
                                                EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT | \
                                                EXT4_IOC_CHECKPOINT_FLAG_DRY_RUN)

/*
 * Structure for EXT4_IOC_GETFSUUID/EXT4_IOC_SETFSUUID
 */
struct fsuuid {
        __u32       fsu_len;
        __u32       fsu_flags;
        __u8        fsu_uuid[];
};

/*
 * Structure for EXT4_IOC_MOVE_EXT
 */
struct move_extent {
        __u32 reserved;         /* should be zero */
        __u32 donor_fd;         /* donor file descriptor */
        __u64 orig_start;       /* logical start offset in block for orig */
        __u64 donor_start;      /* logical start offset in block for donor */
        __u64 len;              /* block length to be moved */
        __u64 moved_len;        /* moved block length */
};

/*
 * Flags used by EXT4_IOC_SHUTDOWN
 */
#define EXT4_GOING_FLAGS_DEFAULT                0x0     /* going down */
#define EXT4_GOING_FLAGS_LOGFLUSH               0x1     /* flush log but not data */
#define EXT4_GOING_FLAGS_NOLOGFLUSH             0x2     /* don't flush log nor data */

/* Used to pass group descriptor data when online resize is done */
struct ext4_new_group_input {
        __u32 group;            /* Group number for this data */
        __u64 block_bitmap;     /* Absolute block number of block bitmap */
        __u64 inode_bitmap;     /* Absolute block number of inode bitmap */
        __u64 inode_table;      /* Absolute block number of inode table start */
        __u32 blocks_count;     /* Total number of blocks in this group */
        __u16 reserved_blocks;  /* Number of reserved blocks in this group */
        __u16 unused;
};

struct ext4_tune_sb_params {
        __u32 set_flags;
        __u32 checkinterval;
        __u16 errors_behavior;
        __u16 mnt_count;
        __u16 max_mnt_count;
        __u16 raid_stride;
        __u64 last_check_time;
        __u64 reserved_blocks;
        __u64 blocks_count;
        __u32 default_mnt_opts;
        __u32 reserved_uid;
        __u32 reserved_gid;
        __u32 raid_stripe_width;
        __u16 encoding;
        __u16 encoding_flags;
        __u8  def_hash_alg;
        __u8  pad_1;
        __u16 pad_2;
        __u32 feature_compat;
        __u32 feature_incompat;
        __u32 feature_ro_compat;
        __u32 set_feature_compat_mask;
        __u32 set_feature_incompat_mask;
        __u32 set_feature_ro_compat_mask;
        __u32 clear_feature_compat_mask;
        __u32 clear_feature_incompat_mask;
        __u32 clear_feature_ro_compat_mask;
        __u8  mount_opts[64];
        __u8  pad[68];
};

#define EXT4_TUNE_FL_ERRORS_BEHAVIOR    0x00000001
#define EXT4_TUNE_FL_MNT_COUNT          0x00000002
#define EXT4_TUNE_FL_MAX_MNT_COUNT      0x00000004
#define EXT4_TUNE_FL_CHECKINTRVAL       0x00000008
#define EXT4_TUNE_FL_LAST_CHECK_TIME    0x00000010
#define EXT4_TUNE_FL_RESERVED_BLOCKS    0x00000020
#define EXT4_TUNE_FL_RESERVED_UID       0x00000040
#define EXT4_TUNE_FL_RESERVED_GID       0x00000080
#define EXT4_TUNE_FL_DEFAULT_MNT_OPTS   0x00000100
#define EXT4_TUNE_FL_DEF_HASH_ALG       0x00000200
#define EXT4_TUNE_FL_RAID_STRIDE        0x00000400
#define EXT4_TUNE_FL_RAID_STRIPE_WIDTH  0x00000800
#define EXT4_TUNE_FL_MOUNT_OPTS         0x00001000
#define EXT4_TUNE_FL_FEATURES           0x00002000
#define EXT4_TUNE_FL_EDIT_FEATURES      0x00004000
#define EXT4_TUNE_FL_FORCE_FSCK         0x00008000
#define EXT4_TUNE_FL_ENCODING           0x00010000
#define EXT4_TUNE_FL_ENCODING_FLAGS     0x00020000

/*
 * Returned by EXT4_IOC_GET_ES_CACHE as an additional possible flag.
 * It indicates that the entry in extent status cache is for a hole.
 */
#define EXT4_FIEMAP_EXTENT_HOLE         0x08000000

#endif /* _UAPI_LINUX_EXT4_H */