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TOMOYO Linux Cross Reference
Linux/fs/smb/client/cifs_ioctl.h

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  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 
 10 struct 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 
 29 struct smb_mnt_tcon_info {
 30         __u32   tid;
 31         __u64   session_id;
 32 } __packed;
 33 
 34 struct 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     0x00000000
 43 #define PASSTHRU_FSCTL          0x00000001
 44 #define PASSTHRU_SET_INFO       0x00000002
 45 struct 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 supported
 57  * for backlevel compatibility, but is not sufficient for dumping the less
 58  * frequently used GCM256 (32 byte) keys (see the newer "CIFS_DUMP_FULL_KEY"
 59  * ioctl for dumping decryption info for GCM256 mounts)
 60  */
 61 struct 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 keys
 71  */
 72 struct 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 dump
 78          * OUTPUT: session id that was dumped
 79          */
 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 
 94 struct smb3_notify {
 95         __u32   completion_filter;
 96         bool    watch_tree;
 97 } __packed;
 98 
 99 struct 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        0xCF
107 #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 operation
121  */
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 
126 static inline bool cifs_forced_shutdown(struct cifs_sb_info *sbi)
127 {
128         if (CIFS_MOUNT_SHUTDOWN & sbi->mnt_cifs_flags)
129                 return true;
130         else
131                 return false;
132 }
133 

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