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