cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cifs_ioctl.h (3397B)

      1/* SPDX-License-Identifier: LGPL-2.1 */
      2/*
      3 *
      4 *   Structure definitions for io control for cifs/smb3
      5 *
      6 *   Copyright (c) 2015 Steve French <steve.french@primarydata.com>
      7 *
      8 */
      9
     10struct smb_mnt_fs_info {
     11	__u32	version; /* 0001 */
     12	__u16	protocol_id;
     13	__u16	tcon_flags;
     14	__u32	vol_serial_number;
     15	__u32	vol_create_time;
     16	__u32	share_caps;
     17	__u32	share_flags;
     18	__u32	sector_flags;
     19	__u32	optimal_sector_size;
     20	__u32	max_bytes_chunk;
     21	__u32	fs_attributes;
     22	__u32	max_path_component;
     23	__u32	device_type;
     24	__u32	device_characteristics;
     25	__u32	maximal_access;
     26	__u64   cifs_posix_caps;
     27} __packed;
     28
     29struct smb_snapshot_array {
     30	__u32	number_of_snapshots;
     31	__u32	number_of_snapshots_returned;
     32	__u32	snapshot_array_size;
     33	/*	snapshots[]; */
     34} __packed;
     35
     36/* query_info flags */
     37#define PASSTHRU_QUERY_INFO	0x00000000
     38#define PASSTHRU_FSCTL		0x00000001
     39#define PASSTHRU_SET_INFO	0x00000002
     40struct smb_query_info {
     41	__u32   info_type;
     42	__u32   file_info_class;
     43	__u32   additional_information;
     44	__u32   flags;
     45	__u32	input_buffer_length;
     46	__u32	output_buffer_length;
     47	/* char buffer[]; */
     48} __packed;
     49
     50/*
     51 * Dumping the commonly used 16 byte (e.g. CCM and GCM128) keys still supported
     52 * for backlevel compatibility, but is not sufficient for dumping the less
     53 * frequently used GCM256 (32 byte) keys (see the newer "CIFS_DUMP_FULL_KEY"
     54 * ioctl for dumping decryption info for GCM256 mounts)
     55 */
     56struct smb3_key_debug_info {
     57	__u64	Suid;
     58	__u16	cipher_type;
     59	__u8	auth_key[16]; /* SMB2_NTLMV2_SESSKEY_SIZE */
     60	__u8	smb3encryptionkey[SMB3_SIGN_KEY_SIZE];
     61	__u8	smb3decryptionkey[SMB3_SIGN_KEY_SIZE];
     62} __packed;
     63
     64/*
     65 * Dump variable-sized keys
     66 */
     67struct smb3_full_key_debug_info {
     68	/* INPUT: size of userspace buffer */
     69	__u32   in_size;
     70
     71	/*
     72	 * INPUT: 0 for current user, otherwise session to dump
     73	 * OUTPUT: session id that was dumped
     74	 */
     75	__u64	session_id;
     76	__u16	cipher_type;
     77	__u8    session_key_length;
     78	__u8    server_in_key_length;
     79	__u8    server_out_key_length;
     80	__u8    data[];
     81	/*
     82	 * return this struct with the keys appended at the end:
     83	 * __u8 session_key[session_key_length];
     84	 * __u8 server_in_key[server_in_key_length];
     85	 * __u8 server_out_key[server_out_key_length];
     86	 */
     87} __packed;
     88
     89struct smb3_notify {
     90	__u32	completion_filter;
     91	bool	watch_tree;
     92} __packed;
     93
     94#define CIFS_IOCTL_MAGIC	0xCF
     95#define CIFS_IOC_COPYCHUNK_FILE	_IOW(CIFS_IOCTL_MAGIC, 3, int)
     96#define CIFS_IOC_SET_INTEGRITY  _IO(CIFS_IOCTL_MAGIC, 4)
     97#define CIFS_IOC_GET_MNT_INFO _IOR(CIFS_IOCTL_MAGIC, 5, struct smb_mnt_fs_info)
     98#define CIFS_ENUMERATE_SNAPSHOTS _IOR(CIFS_IOCTL_MAGIC, 6, struct smb_snapshot_array)
     99#define CIFS_QUERY_INFO _IOWR(CIFS_IOCTL_MAGIC, 7, struct smb_query_info)
    100#define CIFS_DUMP_KEY _IOWR(CIFS_IOCTL_MAGIC, 8, struct smb3_key_debug_info)
    101#define CIFS_IOC_NOTIFY _IOW(CIFS_IOCTL_MAGIC, 9, struct smb3_notify)
    102#define CIFS_DUMP_FULL_KEY _IOWR(CIFS_IOCTL_MAGIC, 10, struct smb3_full_key_debug_info)
    103#define CIFS_IOC_SHUTDOWN _IOR ('X', 125, __u32)
    104
    105/*
    106 * Flags for going down operation
    107 */
    108#define CIFS_GOING_FLAGS_DEFAULT                0x0     /* going down */
    109#define CIFS_GOING_FLAGS_LOGFLUSH               0x1     /* flush log but not data */
    110#define CIFS_GOING_FLAGS_NOLOGFLUSH             0x2     /* don't flush log nor data */
    111
    112static inline bool cifs_forced_shutdown(struct cifs_sb_info *sbi)
    113{
    114	if (CIFS_MOUNT_SHUTDOWN & sbi->mnt_cifs_flags)
    115		return true;
    116	else
    117		return false;
    118}