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_retrans, 122 Opt_blocksize, 123 Opt_rasize, 124 Opt_rsize, 125 Opt_wsize, 126 Opt_actimeo, 127 Opt_acdirmax, 128 Opt_acregmax, 129 Opt_closetimeo, 130 Opt_echo_interval, 131 Opt_max_credits, 132 Opt_max_cached_dirs, 133 Opt_snapshot, 134 Opt_max_channels, 135 Opt_handletimeout, 136 137 /* Mount options which take string value */ 138 Opt_source, 139 Opt_user, 140 Opt_pass, 141 Opt_ip, 142 Opt_domain, 143 Opt_srcaddr, 144 Opt_iocharset, 145 Opt_netbiosname, 146 Opt_servern, 147 Opt_ver, 148 Opt_vers, 149 Opt_sec, 150 Opt_cache, 151 152 /* Mount options to be ignored */ 153 Opt_ignore, 154 155 Opt_err 156 }; 157 158 struct smb3_fs_context { 159 bool uid_specified; 160 bool cruid_specified; 161 bool gid_specified; 162 bool sloppy; 163 bool got_ip; 164 bool got_version; 165 bool got_rsize; 166 bool got_wsize; 167 bool got_bsize; 168 unsigned short port; 169 170 char *username; 171 char *password; 172 char *domainname; 173 char *source; 174 char *server_hostname; 175 char *UNC; 176 char *nodename; 177 char workstation_name[CIFS_MAX_WORKSTATION_LEN]; 178 char *iocharset; /* local code page for mapping to and from Unicode */ 179 char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ 180 char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ 181 kuid_t cred_uid; 182 kuid_t linux_uid; 183 kgid_t linux_gid; 184 kuid_t backupuid; 185 kgid_t backupgid; 186 umode_t file_mode; 187 umode_t dir_mode; 188 enum securityEnum sectype; /* sectype requested via mnt opts */ 189 bool sign; /* was signing requested via mnt opts? */ 190 bool ignore_signature:1; 191 bool retry:1; 192 bool intr:1; 193 bool setuids:1; 194 bool setuidfromacl:1; 195 bool override_uid:1; 196 bool override_gid:1; 197 bool dynperm:1; 198 bool noperm:1; 199 bool nodelete:1; 200 bool mode_ace:1; 201 bool no_psx_acl:1; /* set if posix acl support should be disabled */ 202 bool cifs_acl:1; 203 bool backupuid_specified; /* mount option backupuid is specified */ 204 bool backupgid_specified; /* mount option backupgid is specified */ 205 bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ 206 bool server_ino:1; /* use inode numbers from server ie UniqueId */ 207 bool direct_io:1; 208 bool strict_io:1; /* strict cache behavior */ 209 bool cache_ro:1; 210 bool cache_rw:1; 211 bool remap:1; /* set to remap seven reserved chars in filenames */ 212 bool sfu_remap:1; /* remap seven reserved chars ala SFU */ 213 bool posix_paths:1; /* unset to not ask for posix pathnames. */ 214 bool no_linux_ext:1; 215 bool linux_ext:1; 216 bool sfu_emul:1; 217 bool nullauth:1; /* attempt to authenticate with null user */ 218 bool nocase:1; /* request case insensitive filenames */ 219 bool nobrl:1; /* disable sending byte range locks to srv */ 220 bool nohandlecache:1; /* disable caching dir handles if srvr probs */ 221 bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ 222 bool seal:1; /* request transport encryption on share */ 223 bool nodfs:1; /* Do not request DFS, even if available */ 224 bool local_lease:1; /* check leases only on local system, not remote */ 225 bool noblocksnd:1; 226 bool noautotune:1; 227 bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ 228 bool no_lease:1; /* disable requesting leases */ 229 bool no_sparse:1; /* do not attempt to set files sparse */ 230 bool fsc:1; /* enable fscache */ 231 bool mfsymlinks:1; /* use Minshall+French Symlinks */ 232 bool multiuser:1; 233 bool rwpidforward:1; /* pid forward for read/write operations */ 234 bool nosharesock:1; 235 bool persistent:1; 236 bool nopersistent:1; 237 bool resilient:1; /* noresilient not required since not fored for CA */ 238 bool domainauto:1; 239 bool rdma:1; 240 bool multichannel:1; 241 bool use_client_guid:1; 242 /* reuse existing guid for multichannel */ 243 u8 client_guid[SMB2_CLIENT_GUID_SIZE]; 244 unsigned int bsize; 245 unsigned int rasize; 246 unsigned int rsize; 247 unsigned int wsize; 248 unsigned int min_offload; 249 unsigned int retrans; 250 bool sockopt_tcp_nodelay:1; 251 /* attribute cache timemout for files and directories in jiffies */ 252 unsigned long acregmax; 253 unsigned long acdirmax; 254 /* timeout for deferred close of files in jiffies */ 255 unsigned long closetimeo; 256 struct smb_version_operations *ops; 257 struct smb_version_values *vals; 258 char *prepath; 259 struct sockaddr_storage dstaddr; /* destination address */ 260 struct sockaddr_storage srcaddr; /* allow binding to a local IP */ 261 struct nls_table *local_nls; /* This is a copy of the pointer in cifs_sb */ 262 unsigned int echo_interval; /* echo interval in secs */ 263 __u64 snapshot_time; /* needed for timewarp tokens */ 264 __u32 handle_timeout; /* persistent and durable handle timeout in ms */ 265 unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */ 266 unsigned int max_channels; 267 unsigned int max_cached_dirs; 268 __u16 compression; /* compression algorithm 0xFFFF default 0=disabled */ 269 bool rootfs:1; /* if it's a SMB root file system */ 270 bool witness:1; /* use witness protocol */ 271 char *leaf_fullpath; 272 struct cifs_ses *dfs_root_ses; 273 bool dfs_automount:1; /* set for dfs automount only */ 274 }; 275 276 extern const struct fs_parameter_spec smb3_fs_parameters[]; 277 278 extern int smb3_init_fs_context(struct fs_context *fc); 279 extern void smb3_cleanup_fs_context_contents(struct smb3_fs_context *ctx); 280 extern void smb3_cleanup_fs_context(struct smb3_fs_context *ctx); 281 282 static inline struct smb3_fs_context *smb3_fc2context(const struct fs_context *fc) 283 { 284 return fc->fs_private; 285 } 286 287 extern int smb3_fs_context_dup(struct smb3_fs_context *new_ctx, struct smb3_fs_context *ctx); 288 extern void smb3_update_mnt_flags(struct cifs_sb_info *cifs_sb); 289 290 /* 291 * max deferred close timeout (jiffies) - 2^30 292 */ 293 #define SMB3_MAX_DCLOSETIMEO (1 << 30) 294 #define SMB3_DEF_DCLOSETIMEO (1 * HZ) /* even 1 sec enough to help eg open/write/close/open/read */ 295 #define MAX_CACHED_FIDS 16 296 extern char *cifs_sanitize_prepath(char *prepath, gfp_t gfp); 297 298 #endif 299