133 lines · c
1/* SPDX-License-Identifier: LGPL-2.1 */2/*3 *4 * Structure definitions for io control for cifs/smb35 *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_mnt_tcon_info {30 __u32 tid;31 __u64 session_id;32} __packed;33 34struct smb_snapshot_array {35 __u32 number_of_snapshots;36 __u32 number_of_snapshots_returned;37 __u32 snapshot_array_size;38 /* snapshots[]; */39} __packed;40 41/* query_info flags */42#define PASSTHRU_QUERY_INFO 0x0000000043#define PASSTHRU_FSCTL 0x0000000144#define PASSTHRU_SET_INFO 0x0000000245struct smb_query_info {46 __u32 info_type;47 __u32 file_info_class;48 __u32 additional_information;49 __u32 flags;50 __u32 input_buffer_length;51 __u32 output_buffer_length;52 /* char buffer[]; */53} __packed;54 55/*56 * Dumping the commonly used 16 byte (e.g. CCM and GCM128) keys still supported57 * for backlevel compatibility, but is not sufficient for dumping the less58 * frequently used GCM256 (32 byte) keys (see the newer "CIFS_DUMP_FULL_KEY"59 * ioctl for dumping decryption info for GCM256 mounts)60 */61struct smb3_key_debug_info {62 __u64 Suid;63 __u16 cipher_type;64 __u8 auth_key[16]; /* SMB2_NTLMV2_SESSKEY_SIZE */65 __u8 smb3encryptionkey[SMB3_SIGN_KEY_SIZE];66 __u8 smb3decryptionkey[SMB3_SIGN_KEY_SIZE];67} __packed;68 69/*70 * Dump variable-sized keys71 */72struct smb3_full_key_debug_info {73 /* INPUT: size of userspace buffer */74 __u32 in_size;75 76 /*77 * INPUT: 0 for current user, otherwise session to dump78 * OUTPUT: session id that was dumped79 */80 __u64 session_id;81 __u16 cipher_type;82 __u8 session_key_length;83 __u8 server_in_key_length;84 __u8 server_out_key_length;85 __u8 data[];86 /*87 * return this struct with the keys appended at the end:88 * __u8 session_key[session_key_length];89 * __u8 server_in_key[server_in_key_length];90 * __u8 server_out_key[server_out_key_length];91 */92} __packed;93 94struct smb3_notify {95 __u32 completion_filter;96 bool watch_tree;97} __packed;98 99struct smb3_notify_info {100 __u32 completion_filter;101 bool watch_tree;102 __u32 data_len; /* size of notify data below */103 __u8 notify_data[];104} __packed;105 106#define CIFS_IOCTL_MAGIC 0xCF107#define CIFS_IOC_COPYCHUNK_FILE _IOW(CIFS_IOCTL_MAGIC, 3, int)108#define CIFS_IOC_SET_INTEGRITY _IO(CIFS_IOCTL_MAGIC, 4)109#define CIFS_IOC_GET_MNT_INFO _IOR(CIFS_IOCTL_MAGIC, 5, struct smb_mnt_fs_info)110#define CIFS_ENUMERATE_SNAPSHOTS _IOR(CIFS_IOCTL_MAGIC, 6, struct smb_snapshot_array)111#define CIFS_QUERY_INFO _IOWR(CIFS_IOCTL_MAGIC, 7, struct smb_query_info)112#define CIFS_DUMP_KEY _IOWR(CIFS_IOCTL_MAGIC, 8, struct smb3_key_debug_info)113#define CIFS_IOC_NOTIFY _IOW(CIFS_IOCTL_MAGIC, 9, struct smb3_notify)114#define CIFS_DUMP_FULL_KEY _IOWR(CIFS_IOCTL_MAGIC, 10, struct smb3_full_key_debug_info)115#define CIFS_IOC_NOTIFY_INFO _IOWR(CIFS_IOCTL_MAGIC, 11, struct smb3_notify_info)116#define CIFS_IOC_GET_TCON_INFO _IOR(CIFS_IOCTL_MAGIC, 12, struct smb_mnt_tcon_info)117#define CIFS_IOC_SHUTDOWN _IOR('X', 125, __u32)118 119/*120 * Flags for going down operation121 */122#define CIFS_GOING_FLAGS_DEFAULT 0x0 /* going down */123#define CIFS_GOING_FLAGS_LOGFLUSH 0x1 /* flush log but not data */124#define CIFS_GOING_FLAGS_NOLOGFLUSH 0x2 /* don't flush log nor data */125 126static inline bool cifs_forced_shutdown(struct cifs_sb_info *sbi)127{128 if (CIFS_MOUNT_SHUTDOWN & sbi->mnt_cifs_flags)129 return true;130 else131 return false;132}133