1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright (C) 2020, Microsoft Corporation. 4 * 5 * Author(s): Steve French <stfrench@microsoft.com> 6 * David Howells <dhowells@redhat.com> 7 */ 8 9 #ifndef _FS_CONTEXT_H 10 #define _FS_CONTEXT_H 11 12 #include "cifsglob.h" 13 #include <linux/parser.h> 14 #include <linux/fs_parser.h> 15 16 /* Log errors in fs_context (new mount api) but also in dmesg (old style) */ 17 #define cifs_errorf(fc, fmt, ...) \ 18 do { \ 19 errorf(fc, fmt, ## __VA_ARGS__); \ 20 cifs_dbg(VFS, fmt, ## __VA_ARGS__); \ 21 } while (0) 22 23 enum smb_version { 24 Smb_1 = 1, 25 Smb_20, 26 Smb_21, 27 Smb_30, 28 Smb_302, 29 Smb_311, 30 Smb_3any, 31 Smb_default, 32 Smb_version_err 33 }; 34 35 enum { 36 Opt_cache_loose, 37 Opt_cache_strict, 38 Opt_cache_none, 39 Opt_cache_ro, 40 Opt_cache_rw, 41 Opt_cache_err 42 }; 43 44 enum cifs_sec_param { 45 Opt_sec_krb5, 46 Opt_sec_krb5i, 47 Opt_sec_krb5p, 48 Opt_sec_ntlmsspi, 49 Opt_sec_ntlmssp, 50 Opt_sec_ntlmv2, 51 Opt_sec_ntlmv2i, 52 Opt_sec_none, 53 54 Opt_sec_err 55 }; 56 57 enum cifs_param { 58 /* Mount options that take no arguments */ 59 Opt_user_xattr, 60 Opt_forceuid, 61 Opt_forcegid, 62 Opt_noblocksend, 63 Opt_noautotune, 64 Opt_nolease, 65 Opt_nosparse, 66 Opt_hard, 67 Opt_soft, 68 Opt_perm, 69 Opt_nodelete, 70 Opt_mapposix, 71 Opt_mapchars, 72 Opt_nomapchars, 73 Opt_sfu, 74 Opt_nodfs, 75 Opt_posixpaths, 76 Opt_unix, 77 Opt_nocase, 78 Opt_brl, 79 Opt_handlecache, 80 Opt_forcemandatorylock, 81 Opt_setuidfromacl, 82 Opt_setuids, 83 Opt_dynperm, 84 Opt_intr, 85 Opt_strictsync, 86 Opt_serverino, 87 Opt_rwpidforward, 88 Opt_cifsacl, 89 Opt_acl, 90 Opt_locallease, 91 Opt_sign, 92 Opt_ignore_signature, 93 Opt_seal, 94 Opt_noac, 95 Opt_fsc, 96 Opt_mfsymlinks, 97 Opt_multiuser, 98 Opt_sloppy, 99 Opt_nosharesock, 100 Opt_persistent, 101 Opt_resilient, 102 Opt_tcp_nodelay, 103 Opt_domainauto, 104 Opt_rdma, 105 Opt_modesid, 106 Opt_rootfs, 107 Opt_multichannel, 108 Opt_compress, 109 Opt_witness, 110 111 /* Mount options which take numeric value */ 112 Opt_backupuid, 113 Opt_backupgid, 114 Opt_uid, 115 Opt_cruid, 116 Opt_gid, 117 Opt_port, 118 Opt_file_mode, 119 Opt_dirmode, 120 Opt_min_enc_offload, 121 Opt_blocksize, 122 Opt_rasize, 123 Opt_rsize, 124 Opt_wsize, 125 Opt_actimeo, 126 Opt_acdirmax, 127 Opt_acregmax, 128 Opt_closetimeo, 129 Opt_echo_interval, 130 Opt_max_credits, 131 Opt_snapshot, 132 Opt_max_channels, 133 Opt_handletimeout, 134 135 /* Mount options which take string value */ 136 Opt_source, 137 Opt_user, 138 Opt_pass, 139 Opt_ip, 140 Opt_domain, 141 Opt_srcaddr, 142 Opt_iocharset, 143 Opt_netbiosname, 144 Opt_servern, 145 Opt_ver, 146 Opt_vers, 147 Opt_sec, 148 Opt_cache, 149 150 /* Mount options to be ignored */ 151 Opt_ignore, 152 153 Opt_err 154 }; 155 156 struct smb3_fs_context { 157 bool uid_specified; 158 bool cruid_specified; 159 bool gid_specified; 160 bool sloppy; 161 bool got_ip; 162 bool got_version; 163 bool got_rsize; 164 bool got_wsize; 165 bool got_bsize; 166 unsigned short port; 167 168 char *username; 169 char *password; 170 char *domainname; 171 char *source; 172 char *server_hostname; 173 char *UNC; 174 char *nodename; 175 char workstation_name[CIFS_MAX_WORKSTATION_LEN]; 176 char *iocharset; /* local code page for mapping to and from Unicode */ 177 char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ 178 char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ 179 kuid_t cred_uid; 180 kuid_t linux_uid; 181 kgid_t linux_gid; 182 kuid_t backupuid; 183 kgid_t backupgid; 184 umode_t file_mode; 185 umode_t dir_mode; 186 enum securityEnum sectype; /* sectype requested via mnt opts */ 187 bool sign; /* was signing requested via mnt opts? */ 188 bool ignore_signature:1; 189 bool retry:1; 190 bool intr:1; 191 bool setuids:1; 192 bool setuidfromacl:1; 193 bool override_uid:1; 194 bool override_gid:1; 195 bool dynperm:1; 196 bool noperm:1; 197 bool nodelete:1; 198 bool mode_ace:1; 199 bool no_psx_acl:1; /* set if posix acl support should be disabled */ 200 bool cifs_acl:1; 201 bool backupuid_specified; /* mount option backupuid is specified */ 202 bool backupgid_specified; /* mount option backupgid is specified */ 203 bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ 204 bool server_ino:1; /* use inode numbers from server ie UniqueId */ 205 bool direct_io:1; 206 bool strict_io:1; /* strict cache behavior */ 207 bool cache_ro:1; 208 bool cache_rw:1; 209 bool remap:1; /* set to remap seven reserved chars in filenames */ 210 bool sfu_remap:1; /* remap seven reserved chars ala SFU */ 211 bool posix_paths:1; /* unset to not ask for posix pathnames. */ 212 bool no_linux_ext:1; 213 bool linux_ext:1; 214 bool sfu_emul:1; 215 bool nullauth:1; /* attempt to authenticate with null user */ 216 bool nocase:1; /* request case insensitive filenames */ 217 bool nobrl:1; /* disable sending byte range locks to srv */ 218 bool nohandlecache:1; /* disable caching dir handles if srvr probs */ 219 bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ 220 bool seal:1; /* request transport encryption on share */ 221 bool nodfs:1; /* Do not request DFS, even if available */ 222 bool local_lease:1; /* check leases only on local system, not remote */ 223 bool noblocksnd:1; 224 bool noautotune:1; 225 bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ 226 bool no_lease:1; /* disable requesting leases */ 227 bool no_sparse:1; /* do not attempt to set files sparse */ 228 bool fsc:1; /* enable fscache */ 229 bool mfsymlinks:1; /* use Minshall+French Symlinks */ 230 bool multiuser:1; 231 bool rwpidforward:1; /* pid forward for read/write operations */ 232 bool nosharesock:1; 233 bool persistent:1; 234 bool nopersistent:1; 235 bool resilient:1; /* noresilient not required since not fored for CA */ 236 bool domainauto:1; 237 bool rdma:1; 238 bool multichannel:1; 239 bool use_client_guid:1; 240 /* reuse existing guid for multichannel */ 241 u8 client_guid[SMB2_CLIENT_GUID_SIZE]; 242 unsigned int bsize; 243 unsigned int rasize; 244 unsigned int rsize; 245 unsigned int wsize; 246 unsigned int min_offload; 247 bool sockopt_tcp_nodelay:1; 248 /* attribute cache timemout for files and directories in jiffies */ 249 unsigned long acregmax; 250 unsigned long acdirmax; 251 /* timeout for deferred close of files in jiffies */ 252 unsigned long closetimeo; 253 struct smb_version_operations *ops; 254 struct smb_version_values *vals; 255 char *prepath; 256 struct sockaddr_storage dstaddr; /* destination address */ 257 struct sockaddr_storage srcaddr; /* allow binding to a local IP */ 258 struct nls_table *local_nls; /* This is a copy of the pointer in cifs_sb */ 259 unsigned int echo_interval; /* echo interval in secs */ 260 __u64 snapshot_time; /* needed for timewarp tokens */ 261 __u32 handle_timeout; /* persistent and durable handle timeout in ms */ 262 unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */ 263 unsigned int max_channels; 264 __u16 compression; /* compression algorithm 0xFFFF default 0=disabled */ 265 bool rootfs:1; /* if it's a SMB root file system */ 266 bool witness:1; /* use witness protocol */ 267 char *leaf_fullpath; 268 struct cifs_ses *dfs_root_ses; 269 }; 270 271 extern const struct fs_parameter_spec smb3_fs_parameters[]; 272 273 extern int smb3_init_fs_context(struct fs_context *fc); 274 extern void smb3_cleanup_fs_context_contents(struct smb3_fs_context *ctx); 275 extern void smb3_cleanup_fs_context(struct smb3_fs_context *ctx); 276 277 static inline struct smb3_fs_context *smb3_fc2context(const struct fs_context *fc) 278 { 279 return fc->fs_private; 280 } 281 282 extern int smb3_fs_context_dup(struct smb3_fs_context *new_ctx, struct smb3_fs_context *ctx); 283 extern void smb3_update_mnt_flags(struct cifs_sb_info *cifs_sb); 284 285 /* 286 * max deferred close timeout (jiffies) - 2^30 287 */ 288 #define SMB3_MAX_DCLOSETIMEO (1 << 30) 289 #define SMB3_DEF_DCLOSETIMEO (1 * HZ) /* even 1 sec enough to help eg open/write/close/open/read */ 290 291 extern char *cifs_sanitize_prepath(char *prepath, gfp_t gfp); 292 293 #endif 294