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_reparse_parm { 45 Opt_reparse_default, 46 Opt_reparse_nfs, 47 Opt_reparse_wsl, 48 Opt_reparse_err 49 }; 50 51 enum cifs_sec_param { 52 Opt_sec_krb5, 53 Opt_sec_krb5i, 54 Opt_sec_krb5p, 55 Opt_sec_ntlmsspi, 56 Opt_sec_ntlmssp, 57 Opt_sec_ntlmv2, 58 Opt_sec_ntlmv2i, 59 Opt_sec_none, 60 61 Opt_sec_err 62 }; 63 64 enum cifs_upcall_target_param { 65 Opt_upcall_target_mount, 66 Opt_upcall_target_application, 67 Opt_upcall_target_err 68 }; 69 70 enum cifs_param { 71 /* Mount options that take no arguments */ 72 Opt_user_xattr, 73 Opt_forceuid, 74 Opt_forcegid, 75 Opt_noblocksend, 76 Opt_noautotune, 77 Opt_nolease, 78 Opt_nosparse, 79 Opt_hard, 80 Opt_soft, 81 Opt_perm, 82 Opt_nodelete, 83 Opt_mapposix, 84 Opt_mapchars, 85 Opt_nomapchars, 86 Opt_sfu, 87 Opt_nodfs, 88 Opt_posixpaths, 89 Opt_unix, 90 Opt_nocase, 91 Opt_brl, 92 Opt_handlecache, 93 Opt_forcemandatorylock, 94 Opt_setuidfromacl, 95 Opt_setuids, 96 Opt_dynperm, 97 Opt_intr, 98 Opt_strictsync, 99 Opt_serverino, 100 Opt_rwpidforward, 101 Opt_cifsacl, 102 Opt_acl, 103 Opt_locallease, 104 Opt_sign, 105 Opt_ignore_signature, 106 Opt_seal, 107 Opt_noac, 108 Opt_fsc, 109 Opt_mfsymlinks, 110 Opt_multiuser, 111 Opt_sloppy, 112 Opt_nosharesock, 113 Opt_persistent, 114 Opt_resilient, 115 Opt_tcp_nodelay, 116 Opt_domainauto, 117 Opt_rdma, 118 Opt_modesid, 119 Opt_rootfs, 120 Opt_multichannel, 121 Opt_compress, 122 Opt_witness, 123 Opt_is_upcall_target_mount, 124 Opt_is_upcall_target_application, 125 126 /* Mount options which take numeric value */ 127 Opt_backupuid, 128 Opt_backupgid, 129 Opt_uid, 130 Opt_cruid, 131 Opt_gid, 132 Opt_port, 133 Opt_file_mode, 134 Opt_dirmode, 135 Opt_min_enc_offload, 136 Opt_retrans, 137 Opt_blocksize, 138 Opt_rasize, 139 Opt_rsize, 140 Opt_wsize, 141 Opt_actimeo, 142 Opt_acdirmax, 143 Opt_acregmax, 144 Opt_closetimeo, 145 Opt_echo_interval, 146 Opt_max_credits, 147 Opt_max_cached_dirs, 148 Opt_snapshot, 149 Opt_max_channels, 150 Opt_handletimeout, 151 152 /* Mount options which take string value */ 153 Opt_source, 154 Opt_user, 155 Opt_pass, 156 Opt_pass2, 157 Opt_ip, 158 Opt_domain, 159 Opt_srcaddr, 160 Opt_iocharset, 161 Opt_netbiosname, 162 Opt_servern, 163 Opt_ver, 164 Opt_vers, 165 Opt_sec, 166 Opt_cache, 167 Opt_reparse, 168 Opt_upcalltarget, 169 170 /* Mount options to be ignored */ 171 Opt_ignore, 172 173 Opt_err 174 }; 175 176 struct smb3_fs_context { 177 bool forceuid_specified; 178 bool forcegid_specified; 179 bool uid_specified; 180 bool cruid_specified; 181 bool gid_specified; 182 bool sloppy; 183 bool got_ip; 184 bool got_version; 185 bool got_rsize; 186 bool got_wsize; 187 bool got_bsize; 188 unsigned short port; 189 190 char *username; 191 char *password; 192 char *password2; 193 char *domainname; 194 char *source; 195 char *server_hostname; 196 char *UNC; 197 char *nodename; 198 char workstation_name[CIFS_MAX_WORKSTATION_LEN]; 199 char *iocharset; /* local code page for mapping to and from Unicode */ 200 char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ 201 char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ 202 kuid_t cred_uid; 203 kuid_t linux_uid; 204 kgid_t linux_gid; 205 kuid_t backupuid; 206 kgid_t backupgid; 207 umode_t file_mode; 208 umode_t dir_mode; 209 enum securityEnum sectype; /* sectype requested via mnt opts */ 210 enum upcall_target_enum upcall_target; /* where to upcall for mount */ 211 bool sign; /* was signing requested via mnt opts? */ 212 bool ignore_signature:1; 213 bool retry:1; 214 bool intr:1; 215 bool setuids:1; 216 bool setuidfromacl:1; 217 bool override_uid:1; 218 bool override_gid:1; 219 bool dynperm:1; 220 bool noperm:1; 221 bool nodelete:1; 222 bool mode_ace:1; 223 bool no_psx_acl:1; /* set if posix acl support should be disabled */ 224 bool cifs_acl:1; 225 bool backupuid_specified; /* mount option backupuid is specified */ 226 bool backupgid_specified; /* mount option backupgid is specified */ 227 bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ 228 bool server_ino:1; /* use inode numbers from server ie UniqueId */ 229 bool direct_io:1; 230 bool strict_io:1; /* strict cache behavior */ 231 bool cache_ro:1; 232 bool cache_rw:1; 233 bool remap:1; /* set to remap seven reserved chars in filenames */ 234 bool sfu_remap:1; /* remap seven reserved chars ala SFU */ 235 bool posix_paths:1; /* unset to not ask for posix pathnames. */ 236 bool no_linux_ext:1; 237 bool linux_ext:1; 238 bool sfu_emul:1; 239 bool nullauth:1; /* attempt to authenticate with null user */ 240 bool nocase:1; /* request case insensitive filenames */ 241 bool nobrl:1; /* disable sending byte range locks to srv */ 242 bool nohandlecache:1; /* disable caching dir handles if srvr probs */ 243 bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ 244 bool seal:1; /* request transport encryption on share */ 245 bool nodfs:1; /* Do not request DFS, even if available */ 246 bool local_lease:1; /* check leases only on local system, not remote */ 247 bool noblocksnd:1; 248 bool noautotune:1; 249 bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ 250 bool no_lease:1; /* disable requesting leases */ 251 bool no_sparse:1; /* do not attempt to set files sparse */ 252 bool fsc:1; /* enable fscache */ 253 bool mfsymlinks:1; /* use Minshall+French Symlinks */ 254 bool multiuser:1; 255 bool rwpidforward:1; /* pid forward for read/write operations */ 256 bool nosharesock:1; 257 bool persistent:1; 258 bool nopersistent:1; 259 bool resilient:1; /* noresilient not required since not fored for CA */ 260 bool domainauto:1; 261 bool rdma:1; 262 bool multichannel:1; 263 bool use_client_guid:1; 264 /* reuse existing guid for multichannel */ 265 u8 client_guid[SMB2_CLIENT_GUID_SIZE]; 266 unsigned int bsize; 267 unsigned int rasize; 268 unsigned int rsize; 269 unsigned int wsize; 270 unsigned int min_offload; 271 unsigned int retrans; 272 bool sockopt_tcp_nodelay:1; 273 /* attribute cache timeout for files and directories in jiffies */ 274 unsigned long acregmax; 275 unsigned long acdirmax; 276 /* timeout for deferred close of files in jiffies */ 277 unsigned long closetimeo; 278 struct smb_version_operations *ops; 279 struct smb_version_values *vals; 280 char *prepath; 281 struct sockaddr_storage dstaddr; /* destination address */ 282 struct sockaddr_storage srcaddr; /* allow binding to a local IP */ 283 struct nls_table *local_nls; /* This is a copy of the pointer in cifs_sb */ 284 unsigned int echo_interval; /* echo interval in secs */ 285 __u64 snapshot_time; /* needed for timewarp tokens */ 286 __u32 handle_timeout; /* persistent and durable handle timeout in ms */ 287 unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */ 288 unsigned int max_channels; 289 unsigned int max_cached_dirs; 290 bool compress; /* enable SMB2 messages (READ/WRITE) de/compression */ 291 bool rootfs:1; /* if it's a SMB root file system */ 292 bool witness:1; /* use witness protocol */ 293 char *leaf_fullpath; 294 struct cifs_ses *dfs_root_ses; 295 bool dfs_automount:1; /* set for dfs automount only */ 296 enum cifs_reparse_type reparse_type; 297 bool dfs_conn:1; /* set for dfs mounts */ 298 }; 299 300 extern const struct fs_parameter_spec smb3_fs_parameters[]; 301 302 extern int smb3_init_fs_context(struct fs_context *fc); 303 extern void smb3_cleanup_fs_context_contents(struct smb3_fs_context *ctx); 304 extern void smb3_cleanup_fs_context(struct smb3_fs_context *ctx); 305 306 static inline struct smb3_fs_context *smb3_fc2context(const struct fs_context *fc) 307 { 308 return fc->fs_private; 309 } 310 311 extern int smb3_fs_context_dup(struct smb3_fs_context *new_ctx, struct smb3_fs_context *ctx); 312 extern int smb3_sync_session_ctx_passwords(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses); 313 extern void smb3_update_mnt_flags(struct cifs_sb_info *cifs_sb); 314 315 /* 316 * max deferred close timeout (jiffies) - 2^30 317 */ 318 #define SMB3_MAX_DCLOSETIMEO (1 << 30) 319 #define SMB3_DEF_DCLOSETIMEO (1 * HZ) /* even 1 sec enough to help eg open/write/close/open/read */ 320 #define MAX_CACHED_FIDS 16 321 extern char *cifs_sanitize_prepath(char *prepath, gfp_t gfp); 322 323 extern struct mutex cifs_mount_mutex; 324 325 static inline void cifs_mount_lock(void) 326 { 327 mutex_lock(&cifs_mount_mutex); 328 } 329 330 static inline void cifs_mount_unlock(void) 331 { 332 mutex_unlock(&cifs_mount_mutex); 333 } 334 335 #endif 336