fs/smb/common/fscc.h

root/fs/smb/common/fscc.h
/* SPDX-License-Identifier: LGPL-2.1 */
/*
 *
 *   Copyright (c) International Business Machines  Corp., 2009, 2013
 *                 Etersoft, 2012
 *                 2018 Samsung Electronics Co., Ltd.
 *   Author(s): Steve French (sfrench@us.ibm.com)
 *              Pavel Shilovsky (pshilovsky@samba.org) 2012
 *              Namjae Jeon (linkinjeon@kernel.org)
 *
 */
#ifndef _COMMON_SMB_FSCC_H
#define _COMMON_SMB_FSCC_H

/* Reparse structures - see MS-FSCC 2.1.2 */

/* struct fsctl_reparse_info_req is empty, only response structs (see below) */
struct reparse_data_buffer {
        __le32  ReparseTag;
        __le16  ReparseDataLength;
        __u16   Reserved;
        __u8    DataBuffer[]; /* Variable Length */
} __packed;

struct reparse_guid_data_buffer {
        __le32  ReparseTag;
        __le16  ReparseDataLength;
        __u16   Reserved;
        __u8    ReparseGuid[16];
        __u8    DataBuffer[]; /* Variable Length */
} __packed;

struct reparse_mount_point_data_buffer {
        __le32  ReparseTag;
        __le16  ReparseDataLength;
        __u16   Reserved;
        __le16  SubstituteNameOffset;
        __le16  SubstituteNameLength;
        __le16  PrintNameOffset;
        __le16  PrintNameLength;
        __u8    PathBuffer[]; /* Variable Length */
} __packed;

#define SYMLINK_FLAG_RELATIVE 0x00000001

struct reparse_symlink_data_buffer {
        __le32  ReparseTag;
        __le16  ReparseDataLength;
        __u16   Reserved;
        __le16  SubstituteNameOffset;
        __le16  SubstituteNameLength;
        __le16  PrintNameOffset;
        __le16  PrintNameLength;
        __le32  Flags;
        __u8    PathBuffer[]; /* Variable Length */
} __packed;

/* For IO_REPARSE_TAG_NFS - see MS-FSCC 2.1.2.6 */
#define NFS_SPECFILE_LNK        0x00000000014B4E4C
#define NFS_SPECFILE_CHR        0x0000000000524843
#define NFS_SPECFILE_BLK        0x00000000004B4C42
#define NFS_SPECFILE_FIFO       0x000000004F464946
#define NFS_SPECFILE_SOCK       0x000000004B434F53
struct reparse_nfs_data_buffer {
        __le32  ReparseTag;
        __le16  ReparseDataLength;
        __u16   Reserved;
        __le64  InodeType; /* NFS_SPECFILE_* */
        __u8    DataBuffer[];
} __packed;

/* For IO_REPARSE_TAG_LX_SYMLINK - see MS-FSCC 2.1.2.7 */
struct reparse_wsl_symlink_data_buffer {
        __le32  ReparseTag;
        __le16  ReparseDataLength;
        __u16   Reserved;
        __le32  Version; /* Always 2 */
        __u8    Target[]; /* Variable Length UTF-8 string without nul-term */
} __packed;

/* See MS-FSCC 2.3.7 */
struct duplicate_extents_to_file {
        __u64 PersistentFileHandle; /* source file handle, opaque endianness */
        __u64 VolatileFileHandle;
        __le64 SourceFileOffset;
        __le64 TargetFileOffset;
        __le64 ByteCount;  /* Bytes to be copied */
} __packed;

/* See MS-FSCC 2.3.9 */
#define DUPLICATE_EXTENTS_DATA_EX_SOURCE_ATOMIC 0x00000001
struct duplicate_extents_to_file_ex {
        __le64 StructureSize; /* MUST be set to 0x30 */
        __u64 PersistentFileHandle; /* source file handle, opaque endianness */
        __u64 VolatileFileHandle;
        __le64 SourceFileOffset;
        __le64 TargetFileOffset;
        __le64 ByteCount;  /* Bytes to be copied */
        __le32 Flags;
        __le32 Reserved;
} __packed;

/*
 * compression state flags
 * See MS-FSCC 2.3.18
 *     MS-FSCC 2.3.67
 *     MS-FSCC 2.4.9
 */
#define COMPRESSION_FORMAT_NONE 0x0000
#define COMPRESSION_FORMAT_DEFAULT      0x0001
#define COMPRESSION_FORMAT_LZNT1        0x0002

/*
 * See MS-FSCC 2.3.18
 *     MS-FSCC 2.3.67
 */
struct compress_ioctl {
        __le16 CompressionState;
} __packed;

/* See MS-FSCC 2.3.20 */
struct fsctl_get_integrity_information_rsp {
        __le16  ChecksumAlgorithm;
        __le16  Reserved;
        __le32  Flags;
        __le32  ChecksumChunkSizeInBytes;
        __le32  ClusterSizeInBytes;
} __packed;

/* See MS-FSCC 2.3.52 */
struct file_allocated_range_buffer {
        __le64  file_offset;
        __le64  length;
} __packed;

/* See MS-FSCC 2.3.55 */
struct fsctl_query_file_regions_req {
        __le64  FileOffset;
        __le64  Length;
        __le32  DesiredUsage;
        __le32  Reserved;
} __packed;

/* DesiredUsage flags see MS-FSCC 2.3.56.1 */
#define FILE_USAGE_INVALID_RANGE        0x00000000
#define FILE_USAGE_VALID_CACHED_DATA    0x00000001
#define FILE_USAGE_NONCACHED_DATA       0x00000002
struct file_region_info {
        __le64  FileOffset;
        __le64  Length;
        __le32  DesiredUsage;
        __le32  Reserved;
} __packed;

/* See MS-FSCC 2.3.56 */
struct fsctl_query_file_region_rsp {
        __le32 Flags;
        __le32 TotalRegionEntryCount;
        __le32 RegionEntryCount;
        __u32  Reserved;
        struct  file_region_info Regions[];
} __packed;

/* See MS-FSCC 2.3.58 */
struct fsctl_query_on_disk_vol_info_rsp {
        __le64  DirectoryCount;
        __le64  FileCount;
        __le16  FsFormatMajVersion;
        __le16  FsFormatMinVersion;
        __u8    FsFormatName[24];
        __le64  FormatTime;
        __le64  LastUpdateTime;
        __u8    CopyrightInfo[68];
        __u8    AbstractInfo[68];
        __u8    FormatImplInfo[68];
        __u8    LastModifyImplInfo[68];
} __packed;

/* See MS-FSCC 2.3.73 */
struct fsctl_set_integrity_information_req {
        __le16  ChecksumAlgorithm;
        __le16  Reserved;
        __le32  Flags;
} __packed;

/* See MS-FSCC 2.3.75 */
struct fsctl_set_integrity_info_ex_req {
        __u8    EnableIntegrity;
        __u8    KeepState;
        __u16   Reserved;
        __le32  Flags;
        __u8    Version;
        __u8    Reserved2[7];
} __packed;

/*
 * this goes in the ioctl buffer when doing FSCTL_SET_ZERO_DATA
 * See MS-FSCC 2.3.85
 */
struct file_zero_data_information {
        __le64  FileOffset;
        __le64  BeyondFinalZero;
} __packed;

/*
 * This level 18, although with struct with same name is different from cifs
 * level 0x107. Level 0x107 has an extra u64 between AccessFlags and
 * CurrentByteOffset.
 * See MS-FSCC 2.4.2
 */
struct smb2_file_all_info { /* data block encoding of response to level 18 */
        __le64 CreationTime;    /* Beginning of FILE_BASIC_INFO equivalent */
        __le64 LastAccessTime;
        __le64 LastWriteTime;
        __le64 ChangeTime;
        __le32 Attributes;
        __u32  Pad1;            /* End of FILE_BASIC_INFO_INFO equivalent */
        __le64 AllocationSize;  /* Beginning of FILE_STANDARD_INFO equivalent */
        __le64 EndOfFile;       /* size ie offset to first free byte in file */
        __le32 NumberOfLinks;   /* hard links */
        __u8   DeletePending;
        __u8   Directory;
        __u16  Pad2;            /* End of FILE_STANDARD_INFO equivalent */
        __le64 IndexNumber;
        __le32 EASize;
        __le32 AccessFlags;
        __le64 CurrentByteOffset;
        __le32 Mode;
        __le32 AlignmentRequirement;
        __le32 FileNameLength;
        union {
                char __pad;     /* Legacy structure padding */
                DECLARE_FLEX_ARRAY(char, FileName);
        };
} __packed; /* level 18 Query */

/* See MS-FSCC 2.4.7 */
typedef struct file_basic_info { /* data block encoding of response to level 18 */
        __le64 CreationTime;
        __le64 LastAccessTime;
        __le64 LastWriteTime;
        __le64 ChangeTime;
        __le32 Attributes;
        __u32  Pad;
} __packed FILE_BASIC_INFO;     /* size info, level 0x101 */

/* See MS-FSCC 2.4.8 */
typedef struct {
        __le32 NextEntryOffset;
        __u32 FileIndex;
        __le64 CreationTime;
        __le64 LastAccessTime;
        __le64 LastWriteTime;
        __le64 ChangeTime;
        __le64 EndOfFile;
        __le64 AllocationSize;
        __le32 ExtFileAttributes;
        __le32 FileNameLength;
        __le32 EaSize; /* length of the xattrs */
        __u8   ShortNameLength;
        __u8   Reserved;
        __u8   ShortName[24];
        char FileName[];
} __packed FILE_BOTH_DIRECTORY_INFO; /* level 0x104 FFrsp data */

/* See MS-FSCC 2.4.10 */
typedef struct {
        __le32 NextEntryOffset;
        __u32 FileIndex;
        __le64 CreationTime;
        __le64 LastAccessTime;
        __le64 LastWriteTime;
        __le64 ChangeTime;
        __le64 EndOfFile;
        __le64 AllocationSize;
        __le32 ExtFileAttributes;
        __le32 FileNameLength;
        char FileName[];
} __packed FILE_DIRECTORY_INFO;   /* level 0x101 FF resp data */

/* See MS-FSCC 2.4.14 */
struct smb2_file_eof_info { /* encoding of request for level 10 */
        __le64 EndOfFile; /* new end of file value */
} __packed; /* level 20 Set */

/* See MS-FSCC 2.4.4 */
struct smb2_file_alloc_info { /* encoding of request for level 19 */
        __le64 AllocationSize;
} __packed;

/* See MS-FSCC 2.4.15 */
typedef struct {
        __le32 NextEntryOffset;
        __u32 FileIndex;
        __le64 CreationTime;
        __le64 LastAccessTime;
        __le64 LastWriteTime;
        __le64 ChangeTime;
        __le64 EndOfFile;
        __le64 AllocationSize;
        __le32 ExtFileAttributes;
        __le32 FileNameLength;
        __le32 EaSize; /* length of the xattrs */
        char FileName[];
} __packed FILE_FULL_DIRECTORY_INFO; /* level 0x102 rsp data */

/* See MS-FSCC 2.4.24 */
typedef struct {
        __le32 NextEntryOffset;
        __u32 FileIndex;
        __le64 CreationTime;
        __le64 LastAccessTime;
        __le64 LastWriteTime;
        __le64 ChangeTime;
        __le64 EndOfFile;
        __le64 AllocationSize;
        __le32 ExtFileAttributes;
        __le32 FileNameLength;
        __le32 EaSize; /* EA size */
        __le32 Reserved;
        __le64 UniqueId; /* inode num - le since Samba puts ino in low 32 bit*/
        char FileName[];
} __packed FILE_ID_FULL_DIR_INFO; /* level 0x105 FF rsp data */

/* See MS-FSCC 2.4.27 */
struct smb2_file_internal_info {
        __le64 IndexNumber;
} __packed; /* level 6 Query */

/* See MS-FSCC 2.4.28.2 */
struct smb2_file_link_info { /* encoding of request for level 11 */
        /* New members MUST be added within the struct_group() macro below. */
        __struct_group(smb2_file_link_info_hdr, __hdr, __packed,
                __u8   ReplaceIfExists; /* 1 = replace existing link with new */
                                        /* 0 = fail if link already exists */
                __u8   Reserved[7];
                __u64  RootDirectory;  /* MBZ for network operations (why says spec?) */
                __le32 FileNameLength;
        );
        char   FileName[];     /* Name to be assigned to new link */
} __packed; /* level 11 Set */
static_assert(offsetof(struct smb2_file_link_info, FileName) == sizeof(struct smb2_file_link_info_hdr),
              "struct member likely outside of __struct_group()");

/* See MS-FSCC 2.4.34 */
struct smb2_file_network_open_info {
        struct_group_attr(network_open_info, __packed,
                __le64 CreationTime;
                __le64 LastAccessTime;
                __le64 LastWriteTime;
                __le64 ChangeTime;
                __le64 AllocationSize;
                __le64 EndOfFile;
                __le32 Attributes;
        );
        __le32 Reserved;
} __packed; /* level 34 Query also similar returned in close rsp and open rsp */

/* See MS-FSCC 2.4.42.2 */
struct smb2_file_rename_info { /* encoding of request for level 10 */
        /* New members MUST be added within the struct_group() macro below. */
        __struct_group(smb2_file_rename_info_hdr, __hdr, __packed,
                __u8   ReplaceIfExists; /* 1 = replace existing target with new */
                                        /* 0 = fail if target already exists */
                __u8   Reserved[7];
                __u64  RootDirectory;  /* MBZ for network operations (why says spec?) */
                __le32 FileNameLength;
        );
        char   FileName[];     /* New name to be assigned */
        /* padding - overall struct size must be >= 24 so filename + pad >= 6 */
} __packed; /* level 10 Set */
static_assert(offsetof(struct smb2_file_rename_info, FileName) == sizeof(struct smb2_file_rename_info_hdr),
              "struct member likely outside of __struct_group()");

/* File System Information Classes */
/* See MS-FSCC 2.5 */
#define FS_VOLUME_INFORMATION           1 /* Query */
#define FS_LABEL_INFORMATION            2 /* Set */
#define FS_SIZE_INFORMATION             3 /* Query */
#define FS_DEVICE_INFORMATION           4 /* Query */
#define FS_ATTRIBUTE_INFORMATION        5 /* Query */
#define FS_CONTROL_INFORMATION          6 /* Query, Set */
#define FS_FULL_SIZE_INFORMATION        7 /* Query */
#define FS_OBJECT_ID_INFORMATION        8 /* Query, Set */
#define FS_DRIVER_PATH_INFORMATION      9 /* Query */
#define FS_SECTOR_SIZE_INFORMATION      11 /* SMB3 or later. Query */
/* See POSIX Extensions to MS-FSCC 2.3.1.1 */
#define FS_POSIX_INFORMATION            100 /* SMB3.1.1 POSIX. Query */

/* See MS-FSCC 2.5.1 */
#define MAX_FS_NAME_LEN         52
typedef struct {
        __le32 Attributes;
        __le32 MaxPathNameComponentLength;
        __le32 FileSystemNameLen;
        __le16 FileSystemName[]; /* do not have to save this - get subset? */
} __packed FILE_SYSTEM_ATTRIBUTE_INFO;

/* List of FileSystemAttributes - see MS-FSCC 2.5.1 */
#define FILE_SUPPORTS_SPARSE_VDL        0x10000000 /* faster nonsparse extend */
#define FILE_SUPPORTS_BLOCK_REFCOUNTING 0x08000000 /* allow ioctl dup extents */
#define FILE_SUPPORT_INTEGRITY_STREAMS  0x04000000
#define FILE_SUPPORTS_USN_JOURNAL       0x02000000
#define FILE_SUPPORTS_OPEN_BY_FILE_ID   0x01000000
#define FILE_SUPPORTS_EXTENDED_ATTRIBUTES 0x00800000
#define FILE_SUPPORTS_HARD_LINKS        0x00400000
#define FILE_SUPPORTS_TRANSACTIONS      0x00200000
#define FILE_SEQUENTIAL_WRITE_ONCE      0x00100000
#define FILE_READ_ONLY_VOLUME           0x00080000
#define FILE_NAMED_STREAMS              0x00040000
#define FILE_SUPPORTS_ENCRYPTION        0x00020000
#define FILE_SUPPORTS_OBJECT_IDS        0x00010000
#define FILE_VOLUME_IS_COMPRESSED       0x00008000
#define FILE_SUPPORTS_POSIX_UNLINK_RENAME 0x00000400
#define FILE_RETURNS_CLEANUP_RESULT_INFO  0x00000200
#define FILE_SUPPORTS_REMOTE_STORAGE    0x00000100
#define FILE_SUPPORTS_REPARSE_POINTS    0x00000080
#define FILE_SUPPORTS_SPARSE_FILES      0x00000040
#define FILE_VOLUME_QUOTAS              0x00000020
#define FILE_FILE_COMPRESSION           0x00000010
#define FILE_PERSISTENT_ACLS            0x00000008
#define FILE_UNICODE_ON_DISK            0x00000004
#define FILE_CASE_PRESERVED_NAMES       0x00000002
#define FILE_CASE_SENSITIVE_SEARCH      0x00000001

/*
 * File System Control Information
 * See MS-FSCC 2.5.2
 */
struct smb2_fs_control_info {
        __le64 FreeSpaceStartFiltering;
        __le64 FreeSpaceThreshold;
        __le64 FreeSpaceStopFiltering;
        __le64 DefaultQuotaThreshold;
        __le64 DefaultQuotaLimit;
        __le32 FileSystemControlFlags;
        __le32 Padding;
} __packed;

/* See MS-FSCC 2.5.4 */
struct smb2_fs_full_size_info {
        __le64 TotalAllocationUnits;
        __le64 CallerAvailableAllocationUnits;
        __le64 ActualAvailableAllocationUnits;
        __le32 SectorsPerAllocationUnit;
        __le32 BytesPerSector;
} __packed;

/* See MS-FSCC 2.5.7 */
#define SSINFO_FLAGS_ALIGNED_DEVICE             0x00000001
#define SSINFO_FLAGS_PARTITION_ALIGNED_ON_DEVICE 0x00000002
#define SSINFO_FLAGS_NO_SEEK_PENALTY            0x00000004
#define SSINFO_FLAGS_TRIM_ENABLED               0x00000008
/* sector size info struct */
struct smb3_fs_ss_info {
        __le32 LogicalBytesPerSector;
        __le32 PhysicalBytesPerSectorForAtomicity;
        __le32 PhysicalBytesPerSectorForPerf;
        __le32 FSEffPhysicalBytesPerSectorForAtomicity;
        __le32 Flags;
        __le32 ByteOffsetForSectorAlignment;
        __le32 ByteOffsetForPartitionAlignment;
} __packed;

/* See MS-FSCC 2.5.8 */
typedef struct {
        __le64 TotalAllocationUnits;
        __le64 AvailableAllocationUnits;
        __le32 SectorsPerAllocationUnit;
        __le32 BytesPerSector;
} __packed FILE_SYSTEM_SIZE_INFO;       /* size info, level 0x103 */

/* volume info struct - see MS-FSCC 2.5.9 */
#define MAX_VOL_LABEL_LEN       32
struct filesystem_vol_info {
        __le64  VolumeCreationTime;
        __le32  VolumeSerialNumber;
        __le32  VolumeLabelLength; /* includes trailing null */
        __u8    SupportsObjects; /* True if eg like NTFS, supports objects */
        __u8    Reserved;
        __u8    VolumeLabel[]; /* variable len */
} __packed;

/* See MS-FSCC 2.5.10 */
typedef struct {
        __le32 DeviceType;
        __le32 DeviceCharacteristics;
} __packed FILE_SYSTEM_DEVICE_INFO; /* device info level 0x104 */

/*
 * File Attributes
 * See MS-FSCC 2.6
 */
#define FILE_ATTRIBUTE_READONLY                 0x00000001
#define FILE_ATTRIBUTE_HIDDEN                   0x00000002
#define FILE_ATTRIBUTE_SYSTEM                   0x00000004
#define FILE_ATTRIBUTE_DIRECTORY                0x00000010
#define FILE_ATTRIBUTE_ARCHIVE                  0x00000020
#define FILE_ATTRIBUTE_NORMAL                   0x00000080
#define FILE_ATTRIBUTE_TEMPORARY                0x00000100
#define FILE_ATTRIBUTE_SPARSE_FILE              0x00000200
#define FILE_ATTRIBUTE_REPARSE_POINT            0x00000400
#define FILE_ATTRIBUTE_COMPRESSED               0x00000800
#define FILE_ATTRIBUTE_OFFLINE                  0x00001000
#define FILE_ATTRIBUTE_NOT_CONTENT_INDEXED      0x00002000
#define FILE_ATTRIBUTE_ENCRYPTED                0x00004000
#define FILE_ATTRIBUTE_INTEGRITY_STREAM         0x00008000
#define FILE_ATTRIBUTE_NO_SCRUB_DATA            0x00020000
#define FILE_ATTRIBUTE_MASK (FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_HIDDEN | \
                FILE_ATTRIBUTE_SYSTEM | FILE_ATTRIBUTE_DIRECTORY | \
                FILE_ATTRIBUTE_ARCHIVE | FILE_ATTRIBUTE_NORMAL | \
                FILE_ATTRIBUTE_TEMPORARY | FILE_ATTRIBUTE_SPARSE_FILE | \
                FILE_ATTRIBUTE_REPARSE_POINT | FILE_ATTRIBUTE_COMPRESSED | \
                FILE_ATTRIBUTE_OFFLINE | FILE_ATTRIBUTE_NOT_CONTENT_INDEXED | \
                FILE_ATTRIBUTE_ENCRYPTED | FILE_ATTRIBUTE_INTEGRITY_STREAM | \
                FILE_ATTRIBUTE_NO_SCRUB_DATA)

#define FILE_ATTRIBUTE_READONLY_LE              cpu_to_le32(FILE_ATTRIBUTE_READONLY)
#define FILE_ATTRIBUTE_HIDDEN_LE                cpu_to_le32(FILE_ATTRIBUTE_HIDDEN)
#define FILE_ATTRIBUTE_SYSTEM_LE                cpu_to_le32(FILE_ATTRIBUTE_SYSTEM)
#define FILE_ATTRIBUTE_DIRECTORY_LE             cpu_to_le32(FILE_ATTRIBUTE_DIRECTORY)
#define FILE_ATTRIBUTE_ARCHIVE_LE               cpu_to_le32(FILE_ATTRIBUTE_ARCHIVE)
#define FILE_ATTRIBUTE_NORMAL_LE                cpu_to_le32(FILE_ATTRIBUTE_NORMAL)
#define FILE_ATTRIBUTE_TEMPORARY_LE             cpu_to_le32(FILE_ATTRIBUTE_TEMPORARY)
#define FILE_ATTRIBUTE_SPARSE_FILE_LE           cpu_to_le32(FILE_ATTRIBUTE_SPARSE_FILE)
#define FILE_ATTRIBUTE_REPARSE_POINT_LE         cpu_to_le32(FILE_ATTRIBUTE_REPARSE_POINT)
#define FILE_ATTRIBUTE_COMPRESSED_LE            cpu_to_le32(FILE_ATTRIBUTE_COMPRESSED)
#define FILE_ATTRIBUTE_OFFLINE_LE               cpu_to_le32(FILE_ATTRIBUTE_OFFLINE)
#define FILE_ATTRIBUTE_NOT_CONTENT_INDEXED_LE   cpu_to_le32(FILE_ATTRIBUTE_NOT_CONTENT_INDEXED)
#define FILE_ATTRIBUTE_ENCRYPTED_LE             cpu_to_le32(FILE_ATTRIBUTE_ENCRYPTED)
#define FILE_ATTRIBUTE_INTEGRITY_STREAM_LE      cpu_to_le32(FILE_ATTRIBUTE_INTEGRITY_STREAM)
#define FILE_ATTRIBUTE_NO_SCRUB_DATA_LE         cpu_to_le32(FILE_ATTRIBUTE_NO_SCRUB_DATA)
#define FILE_ATTRIBUTE_MASK_LE                  cpu_to_le32(FILE_ATTRIBUTE_MASK)

/*
 * SMB2 Notify Action Flags
 * See MS-FSCC 2.7.1
 */
#define FILE_ACTION_ADDED                       0x00000001
#define FILE_ACTION_REMOVED                     0x00000002
#define FILE_ACTION_MODIFIED                    0x00000003
#define FILE_ACTION_RENAMED_OLD_NAME            0x00000004
#define FILE_ACTION_RENAMED_NEW_NAME            0x00000005
#define FILE_ACTION_ADDED_STREAM                0x00000006
#define FILE_ACTION_REMOVED_STREAM              0x00000007
#define FILE_ACTION_MODIFIED_STREAM             0x00000008
#define FILE_ACTION_REMOVED_BY_DELETE           0x00000009
#define FILE_ACTION_ID_NOT_TUNNELLED            0x0000000A
#define FILE_ACTION_TUNNELLED_ID_COLLISION      0x0000000B

/*
 * Response contains array of the following structures
 * See MS-FSCC 2.7.1
 */
struct file_notify_information {
        __le32 NextEntryOffset;
        __le32 Action;
        __le32 FileNameLength;
        __u8  FileName[];
} __packed;

/*
 * See POSIX Extensions to MS-FSCC 2.3.2.1
 * Link: https://gitlab.com/samba-team/smb3-posix-spec/-/blob/master/fscc_posix_extensions.md
 */
typedef struct {
        /* For undefined recommended transfer size return -1 in that field */
        __le32 OptimalTransferSize;  /* bsize on some os, iosize on other os */
        __le32 BlockSize;
        /* The next three fields are in terms of the block size.
         * (above). If block size is unknown, 4096 would be a
         * reasonable block size for a server to report.
         * Note that returning the blocks/blocksavail removes need
         * to make a second call (to QFSInfo level 0x103 to get this info.
         * UserBlockAvail is typically less than or equal to BlocksAvail,
         * if no distinction is made return the same value in each
         */
        __le64 TotalBlocks;
        __le64 BlocksAvail;       /* bfree */
        __le64 UserBlocksAvail;   /* bavail */
        /* For undefined Node fields or FSID return -1 */
        __le64 TotalFileNodes;
        __le64 FreeFileNodes;
        __le64 FileSysIdentifier;   /* fsid */
        /* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
        /* NB flags can come from FILE_SYSTEM_DEVICE_INFO call   */
} __packed FILE_SYSTEM_POSIX_INFO;

#endif /* _COMMON_SMB_FSCC_H */
Linux
