119 lines
3.3 KiB
C
119 lines
3.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1 */
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/*
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*
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* Structure definitions for io control for cifs/smb3
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*
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* Copyright (c) 2015 Steve French <steve.french@primarydata.com>
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*
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*/
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struct smb_mnt_fs_info {
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__u32 version; /* 0001 */
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__u16 protocol_id;
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__u16 tcon_flags;
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__u32 vol_serial_number;
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__u32 vol_create_time;
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__u32 share_caps;
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__u32 share_flags;
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__u32 sector_flags;
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__u32 optimal_sector_size;
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__u32 max_bytes_chunk;
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__u32 fs_attributes;
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__u32 max_path_component;
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__u32 device_type;
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__u32 device_characteristics;
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__u32 maximal_access;
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__u64 cifs_posix_caps;
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} __packed;
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struct smb_snapshot_array {
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__u32 number_of_snapshots;
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__u32 number_of_snapshots_returned;
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__u32 snapshot_array_size;
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/* snapshots[]; */
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} __packed;
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/* query_info flags */
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#define PASSTHRU_QUERY_INFO 0x00000000
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#define PASSTHRU_FSCTL 0x00000001
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#define PASSTHRU_SET_INFO 0x00000002
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struct smb_query_info {
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__u32 info_type;
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__u32 file_info_class;
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__u32 additional_information;
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__u32 flags;
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__u32 input_buffer_length;
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__u32 output_buffer_length;
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/* char buffer[]; */
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} __packed;
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/*
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* Dumping the commonly used 16 byte (e.g. CCM and GCM128) keys still supported
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* for backlevel compatibility, but is not sufficient for dumping the less
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* frequently used GCM256 (32 byte) keys (see the newer "CIFS_DUMP_FULL_KEY"
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* ioctl for dumping decryption info for GCM256 mounts)
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*/
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struct smb3_key_debug_info {
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__u64 Suid;
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__u16 cipher_type;
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__u8 auth_key[16]; /* SMB2_NTLMV2_SESSKEY_SIZE */
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__u8 smb3encryptionkey[SMB3_SIGN_KEY_SIZE];
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__u8 smb3decryptionkey[SMB3_SIGN_KEY_SIZE];
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} __packed;
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/*
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* Dump variable-sized keys
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*/
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struct smb3_full_key_debug_info {
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/* INPUT: size of userspace buffer */
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__u32 in_size;
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/*
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* INPUT: 0 for current user, otherwise session to dump
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* OUTPUT: session id that was dumped
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*/
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__u64 session_id;
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__u16 cipher_type;
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__u8 session_key_length;
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__u8 server_in_key_length;
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__u8 server_out_key_length;
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__u8 data[];
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/*
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* return this struct with the keys appended at the end:
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* __u8 session_key[session_key_length];
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* __u8 server_in_key[server_in_key_length];
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* __u8 server_out_key[server_out_key_length];
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*/
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} __packed;
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struct smb3_notify {
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__u32 completion_filter;
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bool watch_tree;
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} __packed;
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#define CIFS_IOCTL_MAGIC 0xCF
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#define CIFS_IOC_COPYCHUNK_FILE _IOW(CIFS_IOCTL_MAGIC, 3, int)
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#define CIFS_IOC_SET_INTEGRITY _IO(CIFS_IOCTL_MAGIC, 4)
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#define CIFS_IOC_GET_MNT_INFO _IOR(CIFS_IOCTL_MAGIC, 5, struct smb_mnt_fs_info)
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#define CIFS_ENUMERATE_SNAPSHOTS _IOR(CIFS_IOCTL_MAGIC, 6, struct smb_snapshot_array)
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#define CIFS_QUERY_INFO _IOWR(CIFS_IOCTL_MAGIC, 7, struct smb_query_info)
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#define CIFS_DUMP_KEY _IOWR(CIFS_IOCTL_MAGIC, 8, struct smb3_key_debug_info)
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#define CIFS_IOC_NOTIFY _IOW(CIFS_IOCTL_MAGIC, 9, struct smb3_notify)
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#define CIFS_DUMP_FULL_KEY _IOWR(CIFS_IOCTL_MAGIC, 10, struct smb3_full_key_debug_info)
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#define CIFS_IOC_SHUTDOWN _IOR ('X', 125, __u32)
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/*
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* Flags for going down operation
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*/
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#define CIFS_GOING_FLAGS_DEFAULT 0x0 /* going down */
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#define CIFS_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */
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#define CIFS_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */
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static inline bool cifs_forced_shutdown(struct cifs_sb_info *sbi)
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{
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if (CIFS_MOUNT_SHUTDOWN & sbi->mnt_cifs_flags)
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return true;
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else
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return false;
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}
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